Spacer anchor for mounting on a building material in the form of plates

 

The invention relates to a spacer anchor for mounting on a building material in the form of plates. Spacer anchor is made with anchor sleeve having a protruding spacer tabs that through the introduction of a spacer body between the spacer tabs can be moved apart. Spacer anchor also has a snap-on connection, which connects the spacer body in the retracted position between the spacer tabs and retaining spacer tabs are separated from the anchor sleeve. The snap connection has a snap hook, which is introduced into the groove position covers the free end of the set, essentially parallel to the axis of the locking tongue. The snap hook is connected to the spacer body or anchor sleeve, and the locking lug is connected respectively with the other, of these two, the item. While the snap hook and/or the locking lug is made of a spring elastic. As a result, the spacer anchor, which, after unscrewing spacer screw may again be used. 3 C.p. f-crystals, 3 ill.

The invention relates to a spacer anchor for mounting on a building material in the form of plates with signs, gipsokartona stove or other construction plate. We can talk about the wall of hollow brick, etc., Spacer anchor in accordance with the invention is also suitable for fastening in soft, for example, porous building materials, such as concrete.

Spacer anchor of this kind are known from DE 19720033 A1. Known spacer anchor includes an anchor sleeve with the exhaust from the anchor sleeve forward spacer tabs. In addition, the known spacer anchor contains a spacer body, made in the form of spacer cone, which is installed in front of the spacer tabs. For expanding the spacer reed spacer body is retracted by screwing spacer screw spacer between the reeds and spacer body extends, that is, pushes the spacer tabs from each other. The decompressed spacer tabs go behind a building material in the form of a plate and thereby fix the spacer anchor flush on the construction material.

Known spacer anchor has the disadvantage that the spacer body falls between the sliding tabs, when spacer screw come unscrewed from the stud anchor or at the latest when he tries again to screw spacer screw spacer in the spacer placed anchor may be, for example, with the goal of upgrading or replacing, or removing strengthened by the spacer anchor of the subject or, at least, it is desirable. Reuse once fixed known distance anchor impossible, spacer after screwing out must be removed from the drilling, and should use a different spacer anchor. The spacer body remains inaccessible cavity from the back side of the construction material in the form of a plate.

The basis of the invention lies task to improve spacer anchor of the above type so that it after unscrewing screw spacer screw could be used again.

According to the invention this task is solved by the characteristics of paragraph 1 of the claims. Expansion anchor according to the invention contains a snap-on connection, which if you pull the spacer body drops between the spacer tabs. In introduced into the groove position snap connection holds the spacer body spacer anchor according to the invention in vtyanuta between the spacer tabs position on the anchor sleeve. Thus, the spacer body remains even after unscrewing spacer screw in vtyanuta between spacer asick the usual axial pressure spacer screw, the snap connection stud anchor according to the invention holds the spacer body in introduced into the groove between the spacer tabs on the situation. As the spacer body, while in vtyanuta between the spacer tabs position, holds the spacer lugs, snap-on connection ensures that the spacer anchor according to the invention remains enshrined in the construction material, even if the spacer screw come unscrewed. Expansion anchor according to the invention has thus the advantage that its spacer body does not lose its functions, if you come unscrewed spacer screw after fixing stud anchor. Another advantage spacer anchor according to the invention is that after unscrewing spacer screw it remains enshrined in the construction material. The snap connection spacer body with anchor sleeve can be carried out directly via spacer tabs, that is, the spacer body is engaged with the spacer tabs.

In one embodiment, a spacer anchor has one or more established, essentially, with parallel axes snap hooks that are installed also there and snap hook covers the free end of the locking tongue and thereby holds the spacer body in vtyanuta between the spacer tabs on the situation. While the snap hook can be connected to the spacer body or Rethimno sleeve, spacer tab is connected respectively with the other two parts. The snap hook and/or the securing tongue is made springy.

In an improved embodiment, the spacer anchor includes a device for protection against twisting, which maintains or directs the spacer body in the anchor sleeve fixed against rotation. Device for protection against twisting prevents joint rotation of the spacer body and the spacer screw spacer in the anchor. Device for protection against twisting can contain, for example, a protrusion, rib, etc. that goes between the spacer tabs and thereby directs the spacer body is fixed against rotation but movable on the axis of the armature sleeve. In versions of the invention the snap-hook and/or the locking lug locking device can form a device for protection against twisting.

In a preferred embodiment, the spacer body and the anchor sleeve is made in one piece with each other, they are interconnected in a specified place of separation, which is filling up the invention allows the one-piece manufacture of the spacer anchor according to the invention has the following advantage that spacer body to screw spacer screw without loss connected with the anchor sleeve.

In a preferred embodiment, a spacer anchor according to the invention is made of plastic, for example, by injection molding or molding under pressure. This allows economical manufacture spacer anchor according to the invention. In particular, it is possible to easily manufacture the spacer body and anchor the sleeve in a single working operation in one piece from plastic.

The invention is explained below more in detail with the aid of the drawing of the exemplary embodiment. Shown:

Fig.1 is a perspective image spacer anchor according to the invention; and

Fig.2 is a side view of the cleat of the anchor according to Fig.1;

Fig.3 - the use of spacer anchor according to Fig.1 in half section.

Is depicted in Fig.1 and 2 spacer anchor 10 is made integral molding of plastic material. It contains the anchor sleeve 12, which forms the rear end of the cleat of the anchor 10. The anchor sleeve 12 includes a protruding radially outward, the flange 14 at its rear end the end. In addition, from the anchor sleeve 12 away running parallel to the axis of the star ribs 16 for protection from the frame in Fig.1 and 2 spacer screw.

From the anchor sleeve 12 depart forward spacer tabs 18. In the shown and described example implementation spacer anchor includes two spacer tabs 18, each of which passes through a portion of the periphery of the spacer anchor 10 which is depicted in the exemplary embodiment have a period. Spacer tabs 18 made in one piece with the anchor sleeve 12, they depart from its front, facing away from the flange 14, the front end on the continuation of the wall anchor sleeve 12.

In between the expansion tongues 18 expansion anchor 10 includes locking tabs 20, the free end of which facing the anchor sleeve 12. Far from the anchor sleeve 12 the end of the locking tabs 20 are transferred into the connecting sleeve 22, which connects the far end of the locking tongues 20 integral with the anchor sleeve 12. The connecting sleeve 22 is parallel to the axis relative to the spacer anchor 10 and mounted on a peripheral area of spacer anchor 10 between the locking tabs 20. The locking tabs 20 are made of an elastic spring in the circumferential direction.

On the free front, far from the anchor sleeve 12 and the end spacer reeds 18, installed the spacer body 24. The spacer body 24 contains ovetta on the front end tapering cone (chamfer 30). The spacer body 24 contains the entire length of the internal thread 32 (Fig.3).

The spacer body 24 is connected through a specified place 34 division with connecting sleeves 22 of the locking tongues 20. Set designated 34 division represent bottlenecks in the material torn when following the retraction of the spacer body 24 between the expansion tongues 18. Thus all elements of the spacer anchor 10 according to the invention is made in one piece with each other during one working operation by injection molding from plastic.

On the distance the cone 26 is made of two snap-hook 36, which are mounted opposite each other. Snap hooks 36 does not protrude radially at the periphery of the spacer anchor 10, they are installed in the continuation of the slot 38 between the locking tabs 20 and the spacer tabs 18. The location and setting are clearly visible in Fig.1.

The use of spacer anchor 10 according to the invention is shown in Fig.3. Spacer anchor 10 is used to fasten the object 40, for example, gypsum plate 42. For fastening the spacer anchor 10 in its depicted in Fig.1 and 2, the ground state is inserted into the drilled hole passing through gypsum plate 42 up until its flange 14 and this in drywall and prevent joint rotation spacer anchor 10 for subsequent screwing spacer screw 44. After introduction of the spacer anchor 10 in the drilled hole on the gypsum plate 42 is set to assign the object 40, and the spacer screw 44 through the drilled hole in the object 40 is introduced into the spacer anchor 10. Spacer screw 44 can be introduced through the spacer 12 and the spacer tabs 18 to the spacer body 24. In the spacer body 24 is screwed into the spacer screw 44. When the head 46 of the spacer screw 44 will be adjacent to the fixed object 40, spacer screw 44 engages the spacer body 24 between the expansion tongues 18. By the beginning of the retracting spacer body 24 between the expansion tongues 18 are defined space 34 of the separation are broken so that the spacer body 24 can be drawn in between the expansion tongues 18. If you pull between the expansion tongues 18 spacer cone spacer 26 of the body 24 pushes the spacer tabs 18 from each other, the spacer body 24 bursting with spacer lugs 18 and secures thereby securing anchor 10 flush with the gypsum plate 42.

If you pull the spacer body 24 between the expansion tongues 18, the hooks 36 of the spacer body 24 slide in the slot 38 between the locking tabs 20 and the spacer tabs 18. When this snap hooks 36 elastically press the locking tabs 20 in the district is 12 the ends of the locking tongues 20, the locking tabs 20 otpugivayut back and snap hooks 36. Snap hooks 36 of the cover locking tabs 20 at their free ends, the locking hooks 36 of the spacer body 34 engages with the spacer tabs 18 of the anchor sleeve 12. Snap hooks 36 and the locking tabs 20 form a snap connection 20, 36, which holds the spacer body 24 in vtyanuta between the expansion tongues 18 position. In this position the spacer body 24 holds the spacer tabs 18 are moved apart. Thanks to snap-on connection 20, spacer 36 of the body 24 with the anchor sleeve 12, the spacer body 24 remains in vtyanuta between the expansion tongues 18 holding them apart position, even if the spacer screw 44 is unscrewed from the stud bolt 10. Spacer anchor 10 thus remains fixed in the gypsum plate 42 even after unscrewing spacer screw 44 and spacer screw 44 can easily repeatedly Unscrew and re-screw.

If you pull between the expansion tongues 18 spacer cone spacer 26 of the body 24 puts pressure not only on the distance the tabs 18, but also on the coupling sleeve 22 and the locking tongues 20 with the anchor sleeve 12, that is, the spacer body 24 PE liner 22 also form the spacer lugs or spacers, that apart and fix the spacer anchor 10 with geometric snapping gypsum plate 42. Coming with the introduction of the spacer body 24 between the spacer tabs 18 into the slot 38 between the locking tabs 20 and the spacer tabs 18 snap hooks 36 create a device for protection against twisting 18, 20, 36, 38, which prevents twisting of the spacer body 24 relative to the anchor sleeve 12 and, thereby, the joint rotation of the spacer body 24 with the expansion screw 44 when the retraction of the spacer body 24 between the expansion tongues 18.

Claims

1. Spacer anchor with anchor sleeve having a protruding spacer tabs that through the introduction of a spacer body between the spacer tabs can be moved apart, and the spacer anchor (10) has a snap-on connection (20, 36), which connects the spacer body (24) in the retracted position between the spacer tabs (18) and retaining spacer tabs (18) apart from the anchor sleeve (12), characterized in that the snap-on connection (20, 36) has a snap-hook (36), which is introduced into the groove position covers the free end of the set, essentially, the computers the sleeve (12) and the locking lug (20) connected respectively with the other of these two (12, 24) detail, and with a snap hook (36) and/or the locking lug (20) is made of spring-elastic.

2. Spacer anchor under item 1, characterized in that the spacer anchor (10) comprises a device for protection against twisting(18, 20, 36, 38), which holds the spacer body (24) without rotation of the armature sleeve (12).

3. Spacer anchor under item 1, characterized in that the spacer body (24) is performed after a specified place (34) separation in one piece with the anchor sleeve (12).

4. Spacer anchor under item 1, characterized in that the spacer anchor (10) consists of plastic.

 

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