Strengthening element for fixing in short, not under core blind hole, mode and adjusting instrument for fixing similar strengthening element

FIELD: invention refers to strengthening element for fixing in short, not under core hole, mode and adjusting instrument for fixing similar strengthening element.

SUBSTANCE: mentioned strengthening element has rod, which on one end has thrust cone, which expands in direction to rod, and non-split, tubular clenched bushing through which rod passes and which for expansion and fixing in blind hole is fulfilled with possibility of its pulling on thrust cone so, that it expands in face field turning to thrust cone. Hollow conic expansion of clenched bushing has more sharp conic angle then thrust cone. Mode of fixing of strengthening element in opening is in that clenched bushing is pulled on thrust cone by way of transfer on clenched bushing of vibrating movements in ultrasound diapason of frequencies. Fixing with such mode is light and lightly loads the place of fixing. Adjusting instrument for strengthening element has central rod entering into axial opening of thrust cone at installation on face side of clenched bushing. At that adjusting element has tubular rim circling around central rod for installation on face side of clenched bushing. External diameter of rim is no larger then external diameter of clenched bushing.

EFFECT: increases reliability of strengthening.

13 cl, 13 dwg

 

The invention relates to a fixing element for fixing in short, nepolnocennom blind hole according to the restrictive part of paragraph 1 of the formula of the invention, a method and an installation tool for fastening a similar fastening element according to the restrictive part of paragraph 11 and 12 respectively of the claims. The fastening element is provided, in particular, to enable the mounting plate to the constructive element, for example, structural steel, to allow attachment thereto of another structural element. When this plate structural element should not powerlifts, consequently, is only a relatively short depth of embedding, in particular, if the diameters of the holes is approximately equal to the thickness of the structural element. The term "short" should be understood the size comparable to the diameter of a blind hole.

From EP 440896 B1 known fastening element, which is provided for fastening in polnotsenno the hole in the plate structural elements, such as facade plate. The known fastening element has a rod with spacer cone at its end extending in the direction from the terminal. On the rod, when viewed from the side, is wavy curved ring that is La fastening looming on the spacer cone and consequently expands. Extended ring is included in the undercut hole. Known fixing element can be fixed even in the slab, which may be in relation to the diameter of the hole is relatively thin, however, the disadvantage is that to secure you the undercut. Manufacturer undercut requires additional costs.

FR 1297330 known fastening element, which partially allows to solve the above problems. However, this fastening element does not provide a sufficient degree of reliability of fixing due to only a small contact area between Rethimno the bushing and the spacer element. This problem is a consequence of kilocalories shapes with convex curvature at the inlet and the absence of any agreement between the shape of the spacer element and the shape of the opening of the sleeve. In addition, the spacer element ill is held against transverse loads and may be transversely displaced, so that the mount is not stable (unchanged).

Therefore, the basis of this invention is the goal to offer the fastening element, which is made with reliable constant fixing in nepolnocennom the housing bore. While short in relation to the value of the diameter of the hole should be sufficient to freeze.

This task in accordance with image what emeniem is solved by the characteristics of paragraphs 1 claims. Corresponding to the invention the fastening element has a tubular continuous rethimnou sleeve, which is located on the rod and arranged to bias it. For fixing in the housing bore, the fastening element with the expansion cone is inserted into the blind hole, and rasina sleeve slides over the spacer cone. When nadhani spacer cone extends rethimnou nut in her facing the spacer cone end area. Extended end region is pressed into the wall of the blind hole, and consequently secures the fastening element in the housing bore. However, extended in the front end area Rethimno sleeve and a hollow hole occurs connection with geometric and force closure, thus providing a high pressure even in a short blind hole. Another advantage of corresponding to the invention the fastening element is that being odpiranje his rod against transverse forces due to Rethimno sleeve in the hole. In addition, recessed flush in the housing bore Razina sleeve is proper fastening of the fastening element, as a blind hole has a preset nominal depth. Corresponding to the invention the fastening element is provided, in particular for fixing the product of structural steel, aluminum or the like, however, it is also suitable for fixing in products from other materials, such as concrete. To facilitate slipped on easily Rethimno sleeve on the spacer cone and resulting expansion Rethimno sleeve spacer cone can be fitted with grease.

To facilitate expansion Rethimno sleeve in its facing the spacer cone end area is hollow conical extension type chamfer or the inner cone on the inner side facing the spacer cone end side Rethimno sleeve. As a result, the thickness Rethimno sleeve is reduced in the expanding when nadhani on the spacer cone end area Rethimno sleeve, thereby Razina sleeve may expand when exposed to a minor effort.

The preferred way hollow conical extension Rethimno sleeve has a more acute cone angle than the spacer cone. Consequently Razina sleeve when nadhani on the distance the cone extends in cooperation with the spacer cone primarily on its facing the spacer cone end end. First of all Razina sleeve expands in its front end area and pressed into the wall of the bore. Only with increasing navigantium on the spacer cone expansion Rethimno is tulki continues starting from the front, facing the spacer cone, the end region to approximately the middle pane axially short Rethimno sleeve. Extension Rethimno bushings in the front end area has the advantage that the extending force is not enough, since Razina sleeve extends only a short section of its axial length, and that the force with which Razina sleeve is pressed into the wall of the hole is large, because Razina sleeve is pressed into the wall of the hole only in the front end area and thus a relatively small annular surface. As the benefits it should also be noted stable fixation with a relatively small expansion effort. This effect is supported by thin-walled Rethimno sleeve.

To obtain high settings secure as favorable was the cone angle spacer cone in the range from approximately 14 to 20°preferably about 17°.

A variant embodiment of the invention provides for the corrugation on the outer side Rethimno sleeve, at least in its facing the spacer cone end area. Reefing can represent, for example, rectangular knurling; it should be noted that the linear knurling is wrong, if it is useparallelgc. When the extension time is IMEI sleeve corrugation pressed into the wall of the blind hole, and increases thus the pressure. In addition, reefing, if it is made by plastic deformation, such as knurling, is the cause surface hardening Rethimno sleeve. Because of this corrugation is pressed into the wall of the bore even when Razina sleeve and having a blind hole structural element made of materials having originally the same hardness.

In a preferred embodiment of the invention Razina the sleeve is made of steel of great hardness, for example, made of alloy, stainless steel (for example steel A4). Sufficient local high hardness steel outside facing the spacer cone end area Rethimno sleeve, which is pressed when the extension Rethimno bushing in the wall of the bore. Great hardness is considered, in particular, the hardness Rethimno sleeve, which is greater than the hardness of the steel, so that the fastening element could be fixed with a higher pressure in structural steel.

Improve relevant to the invention the fastening element spacer cone on the transition to rod has a larger diameter than the rod, while the spacer cone moves to a smaller diameter rod through the annular ledge. Thus, the spacer cone has the form be trimmed is tion of the cone. With the same diameter spacer cone on it having a larger diameter and is addressed to the terminal base and at the same cone angle spacer cone spacer cone is shorter in the axial direction. Also Razina sleeve may be respectively axially shorter than the spacer cone. Consequently, the fastening element can also be attached in axially shorter the housing bore, and the pressure under otherwise the same proportions remained almost unchanged. Thus, corresponding to the invention the fastening element can be fixed in a more thin plate without drilling through the plate or perform the undercut blind hole.

To enable fastening of the fastening element with a short depth of fixation and despite this high pressure, one variant of the invention provides an axially short rethimnou sleeve, rasina region which accounts for more than half of its axial length. Axial length Rethimno region corresponds to the axial length of the inner cone Rethimno sleeve and/or the axial length of the incision, because Razina sleeve has a slit. The term "axially short" refers to an amount comparable with the characteristics of eroticisim diameter of the fastening element. The characteristic diameters of the fixing element is the diameter of the rod or the outer diameter of the undeformed Rethimno sleeve. In one embodiment of the invention the axial length Rethimno sleeve corresponds approximately to the external diameter, in another embodiment, this invention is only about 2/3 of the outer diameter.

One variant of the invention provides a thin-walled rethimnou sleeve. The term "thin-walled" should also be considered in comparison with the characteristic diameter of the fastening element. Wall thickness Rethimno sleeve is approximately in the range from 1/4 to 1/6 of the diameter of the shank of the fastening element. Thin Razina sleeve may be deformed due to the small efforts, i.e. there is a need to expand Rethimno sleeve effort is small, and the force with which Razina sleeve is pressed into the wall of the bore at a given force expansion, large.

Install spacer cone it is pointing away from the rod, large diameter end at the bottom of a blind hole, it may happen that Razina sleeve rests on the bottom of the hole when nadhani on the distance the cone. This is, in particular, with a relatively large diameter blind hole, if between having a large diameter of konzo the spacer cone and the wall of the bore occurs relatively large annular gap. The bottom of the blind hole prevents nadhani Rethimno sleeve spacer on the cone and along with this expansion Rethimno sleeve. The consequence of this is worsened fastening of the fastening element in the housing bore. Therefore, one alternative embodiment of the invention provides an axial continuation of the core facing away from the rod and having a larger diameter side of the spacer cone. Consequently, the spacer cone corresponding to the invention the fastening element is mounted on the bottom of a blind hole, its not having a large diameter end, and is mounted on the bottom of a blind hole, this axial continuation. Consequently, the spacer cone is located at a certain axial distance from the bottom of a blind hole, and is sufficiently short distance between the expansion cone and the bottom of a blind hole, i.e. axially short continuation. Axial continuation should be kept short in order not required to extend the necessary depth fastening and yet the depth of a blind hole. Due to the axial continuation of the obtained axial distance between the blind hole and Rethimno sleeve, so that the bottom of a blind hole does not prevent axial movement and with this expansion Rethimno sleeve. This option is the implementation of izaberete the Oia has the advantage, consists in the improved fastening of the fastening element in the housing bore, as the bottom of a blind hole does not prevent nadhani Rethimno sleeve on the spacer cone and together with the fastening of the fastening element in the housing bore.

In order not to hinder nadhani Rethimno sleeve spacer on the cone, the continuation should not protrude laterally beyond the spacer cone. In particular, the sequel has a diameter of not more than spacer cone having at its larger diameter end. Appropriate is cylindrical axial continuation with diameter equal to the larger diameter of the spacer cone. In addition, the continuation may become narrower in the direction from the spacer cone or have a smaller diameter than the spacer cone. Axial extension must be non-circular cross-section.

Split Razina sleeve facilitates the unclamping and accordingly increases Rethimno force with which Razina sleeve is pressed into the wall of the bore. Although compared to split Rethimno sleeve continuous Razina sleeve has the disadvantage of a larger effort expansion, but it has the advantage of bringing more continuous in the circumferential direction and is not interrupted due to cut of contact with the wall of the hole. Therefore, as the line is adequate to the invention bushings are treated as split, and continuous Razina sleeve.

In one embodiment of the invention the spacer body has to lock, turn-passing useparallelgc (i.e. parallel to the axis) or oblique corrugation between the expansion cone and Rethimno sleeve. When nadhani Rethimno sleeve on the spacer cone corrugation spacer cone is pressed into rethimnou sleeve, and thereby form a fixation device from turning. In principle, the ribs may also be provided on the inner side Rethimno sleeve. Reefing passing useparallelgc or inclined, has even in the case of an inclined stroke separarely components and thus provides a locking action against relative movement between Rethimno sleeve and spacer cone in the circumferential direction, i.e. against rotation Rethimno sleeve relative to the spacer cone. The locking of the turning effect is stronger when passing useparallelgc the corrugation, this inclined passing corrugation has an additional locking effect against movement in axial direction, i.e. inclined passing corrugation holds in the axial direction on the spacer cone thrust at him rethimnou sleeve or, on the contrary, the spacer cone on Rethimno sleeve.

If the structural element is mounted on a fixed mounting the element by screwing, then davinciaudio movement, in particular the delay, applies torque to the spacer cone. Corresponding to the invention, the corrugation increases the torque transmitted spacer cone on rethimnou sleeve, resulting in a reduced risk that when attaching structural element attached to the spacer cone torque rotates this spacer cone in Rethimno sleeve and thereby weakens it. In particular, the inclined passing corrugation increases the axial landing spacer cone in Rethimno sleeve, resulting in a reduced risk that the spacer cone, through the impact of axial force when fastening structural element is weakened and is extruded from Rethimno sleeve. This danger exists in particular, even when the spacer cone when docked is not at the bottom of the hole, for example, when mounted in a through hole or a deep deep hole.

In a preferred embodiment of the invention, the corrugation formed only on the axial section spacer cone, which is having the largest diameter end of the spacer cone or near it. In this regard, nadivana Rethimno sleeve spacer on the cone's possible with a little effort.

The fit is accordance with one embodiment of the invention, the corrugation is suitable implementation of cuts in one or several places on the perimeter of the spacer cone. By forming notches on the sides of the notches are formed ribs or corrugations with relatively sharp edges which, when nadhani Rethimno sleeve embedded in and contribute to the desired fixation from turning. Performing cuts just in the manufacture and slightly increases the force slipped on easily Rethimno sleeve.

Another variant of the invention provides as a roughening straight or angled knurling on the spacer cone. In the case of an inclined roll tilt is made, in particular, in the same direction as the rise of the fixing thread, of course usually with different lifting. The knurling is also simple and inexpensive to manufacture. The cuts and the knurling can be performed on the spacer cone alternative or together.

To consolidate the subject corresponding to the invention the retaining element spacer cone may have a rod, in particular a threaded rod. One variant of the invention provides Bessmertnova spacer cone, spacer cone has, for example, internal threads to screw in the screw or stud with threaded along the entire length. The term "Bessmertnova" is held so that the spacer cone does not have a speaker from Rethimno bushing rod. This variant of the invention allows UTO is certain or made flush with the surface anchoring of the fastening element in the hole. This has the advantage that the rod does not protrude from structural element, which is fixed to the fastening element. In particular, in the case Bestemianova perform spacer cone corresponding to the invention, the corrugation is preferred as a means of fixation against rotation between the spacer cone and Rethimno sleeve, of course it is also possible in the case of having the rod spacer cone. Of course it is also possible Bessmertnova execution spacer cone corresponding to the invention the fastening element and without corrugation, if the refuse by means of embossing commit from turning.

One variant of the invention provides safeguards against loss, which holds rethimnou bushing spacer on the cone until the fastening of the fastening element. After fixing a means of protection against loss becomes negligible. Means of protection against loss prevents that the spacer cone and rasina sleeve during transport and storage will be separated from each other, and keeps rethimnou bushing spacer on the cone in its specified orientation. Means of protection against loss prevents that Razina sleeve is installed opposite to the spacer cone. It is sufficient that the tool before the wounds from the loss keeps rethimnou sleeve on the distance of the cone from falling out, therefore, the permanent connection is not required. Means of protection against loss may represent, for example, knurling, which holds rethimnou bushing spacer on the cone C (a minor) clamping force.

For corrosion protection provides for embedding Rethimno sleeve for fixing the fastener in the hole, for example, approximately 0.5-1 mm Result is surrounding the shank of the fastener annular groove on the back, facing away from the spacer cone side Rethimno sleeve. In accordance with the invention in a surrounding groove is inserted sealing mass. Corrosion in the hole can take place, or if because the fastening element is composed of a different material than the structural element, in which the fastening element is fixed. The fastening element forms a galvanic element with a structural element. In this case, it may cause corrosion even when the fastening element and the structural element is made of stainless material, for example, if the fastening element is made of steel A4 and constructive element in which the fastening element is mounted, aluminum (meaning, in particular, aluminum alloy).

As the depth of the fastening is of sufficient magnitude, approximately matching the I diameter of the holes, in which is fixed to the fastening element, in another embodiment of the invention sufficient even value approximately corresponding to 2/3 of the diameter of the drilled hole. The diameter of the hole is almost the same as the diameter of the undeformed Rethimno sleeve, the hole diameter is preferably slightly larger to allow entry clearance Rethimno sleeve into the hole. Minor depth fixing can be realized regardless of the seals on the shaft of the fastening element.

To expand Rethimno sleeve for anchoring the fastener in the hole to Rethimno sleeve exert an axial force which displaces rethimnou bushing spacer on the cone. Corresponding to the invention, the method disclosed in paragraph 11 of the claims, and provides an introduction to the fastening element reactionary effort, which is necessary for the application of an axial force. Thus, odpiranje for the application of the axial effort is made on the stem of the fastening element. There is a vicious loop of effort without external forces. This variant embodiment of the invention has the advantage that the fastening element must not be supported with the relative axial force applied to offset Rethimno sleeve spacer on the cone. Thus, construction the th element, fixing the fastening element, should not be supported for fixing, even if the structural element is a thin plate. Next, the fixing element can be fixed using the appropriate invention of the method also in a deep blind hole or a through hole, since the spacer cone should not rely on the bottom of the hole.

In accordance with the invention, the reaction force can be transmitted to the shank of the fastening element by screwing the nuts onto the rod. This requires the external thread of the rod. By rotating the folds of the nut on the rod to Rethimno sleeve applied axial force. Between the nut and Rethimno sleeve can be installed sleeve, which transmits the axial force from the nut on rethimnou sleeve. The sleeve is needed if between the rear end side Rethimno sleeve and the nut is free of the thread section of the rod.

So that the fastening element can be hold during the rotation of the nut on the rod from the joint rotation development relevant to the invention the method comprises winding the two lock nuts on the rod and durable tightening relative to each other. For the nuts, the rod may be held without the possibility of rotation by a tool for tightening the screws, for example, the R, wrench open maw or ring spanner.

A variant embodiment of the invention provides for the loading Rethimno sleeve by means of ultrasound to be slipped on easily on the distance the cone. Loading by means of ultrasound involves the excitation Rethimno sleeve with mechanical vibrations in the ultrasonic range of frequencies. Preferably fluctuations are axial. The fastening of the fastening element by means of ultrasonic vibrations has the advantage that it is easy and there is little load on the dock. The latter makes fixing by ultrasound is suitable for fastening the fastening element in a thin plate without the arrester. For example, the tubular waveguide hub on top of the shank of the fastening element is mounted on the rear end side Rethimno sleeve, which transmits vibrations from the ultrasonic vibrator rethimnou sleeve.

Corresponding to the invention the installation tool with signs of paragraph 12 of the claims can be performed, for example, in the form of a pin-type punch, so that the impact can be passed on rethimnou sleeve of the fastening element, which is offset spacer cone, which is installed, for example, at the bottom of a blind hole. Using the installation tool Razina sleeve m which can be loaded even when it is recessed in the hole. Corresponding to the invention the installation tool has a Central rod, which when installed on rethimnou sleeve is in the axial hole of the spacer cone. Central terminal positions installation tool for mounting the element and prevents slippage.

The improvement of the installation tool provides a tubular rim which surrounds the shock rod and through which the installation tool is installed on the same tubular rethimnou sleeve. By means of the possible side loading Rethimno sleeve, if Razina sleeve is recessed in the hole and/or if the spacer cone acts of Rethimno sleeve.

Hereinafter the invention is explained in more detail by means of embodiments of the invention represented in the drawings, where:

figure 1 - the first version of the implementation of the relevant invention the fastening element;

figure 2 corresponding to the invention the fastening of the fastening element of figure 1 in a constructive element;

figure 3 - the second variant of implementation of the relevant invention the fastening element;

4 is a third alternative implementation of the relevant invention the fastening element represented in axial cross-section, and on the left side shows loose the status, and on the right side - fixed;

5 and 6 are enlarged fragments, shown by arrows V and VI, and figure 5 shows the loose, and 6 fastened state of the fastening element;

Fig.7 - the fourth option relevant to the invention the fastening element in the undocked state;

Fig - side view of the spacer cone and Rethimno sleeve according to the fifth variant of implementation of the relevant invention the fastening element;

Fig.9 - end view Rethimno sleeve in accordance with the arrow IX in Fig;

figure 10 - mounting the element on Fig in the assembled state;

11-13 - successive stages in the installation of the fastening element on Fig using the corresponding invention an installation tool.

Presented in figure 1, generally indicated by the position of the 10 corresponding to the invention the fastening element has a rod 12 with the expansion cone 14 at one end, extending in the direction of the rod 12. In addition, the fastening element 10 has a tubular, continuous rethimnou sleeve 16, which is arranged to move on the rod 12. Razina sleeve 16 and the rod 12 with the expansion cone 14 is made of stainless steel A4, that is, of steel of great hardness.

Razina sleeve 16 has a hollow conical extension 18 by type chamfer on its internal is her side with her facing the spacer cone 14 to the face side. The tapered angle of the hollow conical extension 18 is more acute than the cone angle of the spacer cone 14, which has a cone angle of approximately 17°. Due to the different cone angles Razina sleeve 16 in the course of its displacement on the thrust cone 14 is seated on the spacer cone 14 first of all his converts to this spacer cone 14 end end. Thus, Razina sleeve 16 with its hollow conical extension 18 is not immediately seated on the spacer cone 14 on the entire axial length of the hollow conical extension 18 when she comes for the spacer cone 14. Consequently Razina sleeve 16 may be easier to expand radially outward at its facing the spacer cone 14 of the cylindrical end end if it is coming on the distance the cone 14. Various cone angles of the hollow conical extension 18 Rethimno sleeve 16 and the spacer cone 14 of the drawing shows a strongly enlarged, in order to clearly explain the various cone angles and putting Rethimno sleeve 16 is turned to the spacer cone 14 cylindrical end on the spacer cone 14. Due to the increased image difference cone angles in the drawing is greater annular gap between Rethimno sleeve 16 and the core 12 than it is in real scale image.

On my EXT is her side Razina sleeve 16 in facing the spacer cone 14 end area provided with a corrugation forming rectangular knurling 20.

Figure 2 shows the corresponding invention mounting system with mounting element 10 depicted in figure 1. The fastening element 10 to its expansion cone 14 is inserted into the initially cylindrical, not provided with a reference position, a blind hole in a structural element, for example, a steel plate 22. Razina sleeve 16 slides on the spacer cone 14. Nadivana Rethimno sleeve 16 on the distance the cone 14 is, for example, through tube installation tool (not shown), which is installed on top of the rod 12 facing away from the spacer cone 14 side Rethimno sleeve 16. Through ongoing percussion beats Razina sleeve 16 slides on the spacer cone 14, and in this case, nadivana more accurately can be described as putting. When nadhani on the spacer cone 14 this spacer cone 14 extends radially outward rethimnou sleeve 16, from her facing the spacer cone 14 end area. Razina sleeve 16 is pressed due to its greater hardness in his facing the spacer cone 14 end area in the wall of the bore is initially cylindrical and nepolnotsennoe blind hole and secures the fastening element 10 with geometric and force closure of a steel plate 22. When extending Rethimno W is the CTL 16 rectangular pipe 20 is also pressed into the wall of the hole in a steel plate 22 and improves the fastening of the fastening element 10 in a steel plate 22.

Corresponding to the invention, the method of attachment provides nadivana Rethimno sleeve 16 on the spacer cone 14 by ultrasonic loading Rethimno sleeve 16. For this purpose, as shown in figure 2, the dashed lines on top of the rod 12 at the rear side Rethimno sleeve 16 is mounted tubular waveguide hub 23. The waveguide hub 23 is induced by the ultrasonic vibrator (not shown) to axial vibrations in the ultrasonic frequency range and transmits oscillatory motion to rethimnou sleeve 16. Consequently Razina sleeve 16 extends and slides on the spacer cone 14, i.e. pushes and fixes the fastening element 10 in a steel plate 22. Expanding ultrasound is an easy and slightly pressurizes the steel plate 22, so that it is possible to abandon controvery to podpiranja steel plate 22.

If a blind hole in a steel plate 22 has a predetermined depth, the fastening of the fastening element is closed when Razina sleeve 16 retracts flush in steel plate 22. So just implemented proper fastening of the fastening element 10.

Razina sleeve 16 supports the fastening element 10 against lateral load. It should be taken into account that the annular gap between Rethimno liners is th 16 and the core 12 shown in the drawing is greatly increased.

By means of the mounting system shown in figure 2, a simple way achieved the ability to mount on a steel plate 22 of another structural element (not shown). To secure such other structural element, the rod 12 is threaded 24. In addition or instead of the thread 24 of the rod 12 may have an axial blind hole 26, through which the free end of the rod 12 is able to thibetica (not shown) outward to effect the fastening of the rivet connection (not shown). Also in the blind hole 26 may ubivatsya with head dowel pin to pin (not shown) of another structural element to a steel plate 22. Another possibility is to perform a blind hole 26 with internal thread.

The fastening element 10 requires only a small deep freeze. When the diameter of the thread 24 of the rod 12, the corresponding type M6, the diameters of the holes in the steel plate 22 is provided 8 mm at the depth of a blind hole, 5 to 6 mm. Provides a standardized model number of the fastening element 10 with the diameter of the rod 4, 5, 6, 8 and 10 mm or the diameter of the thread 24 of the M4, M5, M6, M8 and M10. Wall thickness Rethimno sleeve - 1 mm, with a large diameter M8 wall thickness can be 1.5 mm and the outer diameter is R Rethimno sleeve 16 and the holes in the steel plate 22 when the specified diameter is 6, 7, 8, 10 or 11 or 12 or 13 mm, Corresponding to a minimum depth fixing t is 3.5 mm when the diameter of the thread M4; 4.0 mm when the diameter of the thread M5 and M6; 6,0 mm thread diameter M8 and 7.0 mm when the diameter of the thread M10.

Presented in figure 3 corresponds to the invention the fastening element 10 has on the transition from the rod 12 to the spacer cone 14 annular ledge 15 on which the spacer cone 14 enters the smaller diameter of the rod 12. Thus, the spacer cone 14 has at its smaller diameter and facing toward the rod 12 the end of a larger diameter than the rod 12. Consequently, the spacer cone 14 is axially shorter than the spacer cone with the same diameter facing toward the rod 12 of the base and with the same cone angle. The rest is shown in figure 3, the fastening element 10 is realized as it is depicted in figure 1, the explanation of figures 1 and 2 are applicable.

Presented in figure 4 corresponding to the invention the fastening element 10 is the same as both explained above, the fixing element 10, the rod 12 with the expansion cone 14 at one end which extends in the direction of the rod 12.

Razina sleeve 16 has an inner cone 18, which extends in the same direction as the spacer cone 14, i.e. in the direction of the spacer cone 14. The inner cone 18 bol the e is long in the axial direction, than hollow conical extension 18 Rethimno sleeve 16 explained above, the fixing element 10. The inner cone 18 passes through rethimnou sleeve 16 on the predominant part of its axial length. Cone angle of the inner cone 18 is sharper than the taper angle of the spacer cone 14, which has a cone angle of approximately 17°. Due to the different cone angles Razina sleeve 16, if it is coming on the distance the cone 14, is placed on the spacer cone 14 first his converts to a spreader cone 14 end end. This can be seen in figure 4 on the left and on an enlarged fragment of figure 5, both of which show an undocked state. Thus, Razina sleeve 16 with its inner cone 18 is placed on the spacer cone 14 is not immediately throughout its axial length by the inner cone 18 when she comes for the spacer cone 14. Consequently Razina sleeve 18 may be easier to expand radially outward at its facing the spacer cone 14 end end when it is coming on the distance the cone 14.

The right side of figure 4 and the enlarged fragment of figure 6 show the corresponding invention mounting system with mounting element 10, i.e. fastened state of the fastening element 10. The fastening element 10 to its expansion cone 14 is inserted into the initially cylindrical, not supplied the military reference position of the blind hole in a structural element, for example, a steel plate 22. Razina sleeve 16 is slipped over the spacer cone 14.

Another possibility for expansion Rethimno sleeve 16 is to wear a tubular part (not shown) on the rod 12 and screwed the nut (not shown) on the threads 24 of the rod 12. Through the pipe nut exerts an axial force on rethimnou sleeve 16, which shifts rethimnou sleeve 16 on the distance the cone 14 and extends it and thereby secures the fastening element 10 in the manner described in the hole in the steel plate 22. This method of fastening has the advantage that it does not apply any external force, i.e. the fastening element 18 should not be installed on the bottom of the hole in which it is fixed, and the fastening element 10 is not required to be supported relative to the axial forces acting to expand on rethimnou sleeve 16. Therefore, the steel plate 22 should not be supported, as when extending Rethimno sleeve 16 with a percussion instrument. In addition, the described method of attachment makes it possible to dock in deep blind hole in which the fastening element 10 is not at the bottom of a blind hole, or fixing them in through the hole.

For sealing holes in a steel plate 22 Razina sleeve 16 is recessed, as seen on the right side of figure 4, for example, approximately 0.5 to 1 mm from the material plate 22. As a consequence, it turns out surrounding the shank 12 of the fastener 10 of the annular groove 26, which is filled with sealing mass 28.

Spacer cone 14 with the rod 12 and rasina sleeve 16 of the fastener 10 shown in Fig.7, the same as presented in figure 1 an example embodiment of the invention. The above explanations also apply. On pointing away from the rod 12 and having a larger diameter side of the spacer cone rod 12 or, respectively, the spacer cone 14 has an axial continuation of 23. Axial continuation 23 is cylindrical and has the same diameter as the larger diameter end of the spacer cone 14. Continued 23 is axially short and has in axial direction only of the length of the spacer cone 14. Spacer cone 14 is axially shorter than the diameter of the rod 12. Axial continuation 23 ends with a chamfer 25. Passing useparallelgc, which serves as a retainer from rotating, vystupovanie edge 27 prevents rotation of the rod 12 and the spacer cone 14 in Rethimno sleeve 16.

Axial continuation 23, which when nadhani Rethimno sleeve 16 supports the spacer cone 14 at the bottom of the holes 29, provides education axial clearance between the expansion cone 14 and the bottom 29 of the hole. Consequently sostoitsyaxii free space between Rethimno sleeve 16 and the bottom 29 of the hole, Razina sleeve 16 when nadhani on the distance the cone 14 is not installed on the bottom 29 of the hole. Therefore, the bottom 29 of the hole shall not prevent the extension Rethimno sleeve 16.

Presented at Fig and 9 corresponding to the invention the fastening element 10 has a spacer cone 14 and rethimnou sleeve 16. Both elements are made of steel of great hardness, in particular, made of alloy, stainless steel (for example, of steel A4). Spacer cone 14 has in addition to the cone cylindrical section 30 having the smallest diameter end of the cone. Next, the spacer cone 14 has a coaxial through hole with an internal thread 32. In axially short section on having the largest diameter end of the spacer cone 14 is inclined or straight knurling 34, of the drawings shows a straight knurling. In addition, two opposite each other points of the perimeter of the spacer cone 14 are molded separately the notches 36 formed on its sides projecting outward from the spacer cone 14 ribs 38 with sharp edges. The cuts 36 begin with having the largest diameter end of the spacer cone 14 and are axially approximately in the middle of the spacer cone 14.

Continuous Razina sleeve 16 has a reciprocal distance of the cone 14 and the cylindrical section 30 of the through hole 40, i.e. a through hole 40 Rethimno is tulki 16 has a cylindrical section 42 and the conical section 44, the diameters of which correspond to the diameters of the spacer cone 14 and a cylindrical section 30. On the outer side Razina sleeve has a rectangular peripheral knurling 20, which runs from the end of the end Rethimno sleeve 16 in axial section, which is shorter than the conical section 44 of the through hole 40. When you pin rectangular pipe 20 is pressed, as already described, in the wall of the bore and thereby improves the fastening of the fastening element 10 due to the geometry of the circuit.

The knurling 46 on the cylindrical section 30 of the spacer cone 14 holds rethimnou sleeve 16, secured from falling on the distance the cone 14. The knurling 46 forms a spacer on the cone 14, the means of protection Rethimno sleeve 16 against the loss, which does not prevent nadhani Rethimno sleeve 16 on the distance the cone 14.

Figure 10 shows the fastening element 10, which was collected from the spacer cone 14 and Rethimno sleeve 16. The axial length of the fastening element 10 has the same order as its outer diameter, as a consequence, the fastening element 10 is axially short relative to its diameter and can be fixed in short, nepolnocennom the housing bore.

Spacer cone 14 presents on Fig-10 of the fastening element 10 is bessergenev, i.e. it does not have a threaded rod or the like on the I fastening structural elements, and for fastening structural elements is an internal thread 32.

For fixing in a constructive element, for example an aluminum plate 48, the fastener 10 is inserted into the hole 50 in the aluminum plate 48 so that the spacer cone 14 is installed on the bottom of the hole or in the present exemplary embodiment (tapered) ring fence holes 50 (11). Razina sleeve 16 slides on the spacer cone 12 and thus extends, at least in the conical region. Extension Rethimno sleeve 16 by slipped on easily on the distance the cone 14 may also be referred to as razdevanie. Consequently Razina sleeve 16 is pressed against the wall of the bore, its rectangular pipe 20 is pressed into the wall of the bore, so that the fastening element 10 is fixed in the hole 50 through force and frictional circuit (Fig). Since the spacer cone 14 has no rod, the fastening element 10 does not protrude from the aluminum plate 48.

To be slipped on easily Rethimno sleeve 16 on the distance the cone 14 is provided presents on 11 and 12 corresponding to the invention the installation tool 54. The installation tool 54 is a cylindrical steel pin, the diameter of which corresponds to the diameter Rethimno sleeve 16. The installation tool 54 has an axial Central is hydrated rod 56 and surrounding the Central rod 56 of the tubular rim 58. The diameter of the Central rod 56 is not greater than the internal diameter of the internal thread 32 of the spacer cone 14. When the installation tool 54 on rethimnou sleeve 16 of the Central rod 56 includes internal threads 32 and thereby positioning the installation tool 54 of the anchoring element 10. The installation tool 54 is set by a knob 58 on the end surface Rethimno sleeve 16. The outer and inner diameter of flange 58 corresponds to the external and internal diameter Rethimno sleeve 16. By impact on installed on rethimnou sleeve 16 installation tool 54 Razina sleeve 16 can hang spacer cone 14 is nadivana may also be known as putting. Through an installation tool 54 Razina sleeve 16 may utoplena to gain a foothold in the hole 50, the fastening element 10 does not protrude from the aluminum plate 48.

The fastening of the structural element, for example steel profile 60, secured in the hole 50 in the aluminum plate 48 of the fastening element 10 is, for example, using passing through the steel section 60 of the screw 62, which is screwed into the internal thread 32 of the spacer cone 14. When screwing in the screw 62 presses the spacer cone 14 deeper into rethimnou sleeve 16, so that Razina sleeve 16 stronger extends the I and secured. The knurling 20 and the notch 36 with the edges 38 of the spacer cone 14 are pressed when nadhani Rethimno sleeve 16 on the distance the cone 14, or, on the contrary, when the indentation of the spacer cone 14 in rethimnou sleeve 16 in the latter, they form a fixation device from rotating, which prevents rotation and consequently release the expander cone 14 in Rethimno sleeve 16 by screwing the screw 62.

In accordance with the invention provides for a staggered implementation of the holes 50. The hole 50 has a section 64 of the fixing diameter Rethimno sleeve 16, which is fixed to the fastening element 10. Due to the annular stop 52 of the hole 50 is reduced in axial continuation of 66, the diameter of which is at least as large as the external diameter of the internal thread 32 Rethimno sleeve 16 or the thread of the screw 62. Continued 66 hole 50 allows the screwing of the screw 62 through the spacer cone 14 without pirania screw 62 in the bottom of the hole and the loading of the fastening element 10 in the direction outwards from the hole 50. This embodiment of the invention has the advantage that, in principle, can be applied to the screw 62 of any length.

1. Fastening element for fastening in short, nepolnocennom housing bore, with the rod (12), which at one end has a spacer cone (14)which extends in the direction of the rod (12), and with continuous, Tr is batoy Rethimno sleeve (16), through which passes the rod (12) and which for the expansion and consolidation in the housing bore is configured to be slipped on easily on the spacer cone (14)so that it extends in facing the spacer cone (14) end area, wherein Razina sleeve (16) has a hollow conical extension (18) on the inner side of his addressed to the spacer cone (14) the face side, and a hollow conical extension (18) Rethimno sleeve (16) has a more acute cone angle than the spacer cone (14).

2. The fastening element according to claim 1, characterized in that the spacer cone (14) has a cone angle of from about 14 to 20°preferably about 17°.

3. The fastening element according to claim 1, characterized in that Razina sleeve (16) has a corrugation (20) on its outer side at its facing the spacer cone (14) end area.

4. The fastening element according to claim 1, characterized in that the fastening element (10), at least outwardly facing spacer cone (14) end area Rethimno sleeve (16) has a steel of great hardness.

5. The fastening element according to claim 1, characterized in that the spacer cone (14) on the transition to the rod (12) has a larger diameter than the rod and spacer cone (14) through an annular ledge (15) goes to the smaller diameter rod.

6. The fastening element pop, characterized in that Razina sleeve (16) is axially short and has an area of unclamping, which is more than half the axial length Rethimno sleeve (16).

7. The fastening element according to claim 1, characterized in that the fastening element (10) has a thin-walled rethimnou sleeve (16).

8. The fastening element according to claim 1, characterized in that the rod (12) has an axial continuation (23) facing away from the rod (12) side of the spacer cone (14) to maintain the spacer cone (14) at the bottom (29) of the blind hole when nadhani Rethimno sleeve (16).

9. The fastening element according to claim 8, characterized in that the axial continuation (23) does not act on the side for the spacer cone (14).

10. The fastening element according to claim 1, characterized in that the spacer cone (14) has useparallelgc or oblique corrugation (34, 36, 38) for locking against rotation between the spacer cone (14) and Rethimno sleeve (16).

11. The method of attachment of the fastener in the hole, and the fastening element has a rod with spacer cone on one end, extending in the direction from the terminal, and rethimnou sleeve, which for the expansion and consolidation in the hole made with the possibility of slipped on easily on the spacer cone, characterized in that rethimnou sleeve (16) pull on the spacer cone (14) by passing on rethimnou sleeve (16) of the oscillatory motion of the clusters in the ultrasonic frequency range.

12. The installation tool to the fastener, which has a spacer cone (14) with an axial hole and rethimnou sleeve (16), for which the extension is configured to be slipped on easily on the spacer cone (14), with the installation tool (54) has a Central rod (56)which when installed on the end side Rethimno sleeve (16) is in the axial hole of the spacer cone (14), characterized in that the adjusting element (54) has a surrounding the Central rod (56) tube side (58) for installation on the side end Rethimno sleeve (16), and the outer diameter side of (58) is not greater than the external diameter Rethimno sleeve (16).

13. The installation tool according to item 12, wherein the inner diameter of the tubular side of (58) is not less than the internal diameter Rethimno sleeve (16).

Priority items:

26.09.2003 according to claims 1 to 4;

15.10.2003 on pp.5;

13.11.2003 on PP-7;

09.12.2003 on PP-9;

26.01.2004 on PP, 12, 13;

21.09.2004 in 11.



 

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