The casing, the clamping element and the method of installation of the clamping element

 

(57) Abstract:

The invention is used for bonding of telecommunication cables or fiber optic cables or pipes. The casing includes first and second parts, each of which has a sidewall with a peripheral flange protruding from it, the clamping element in the form of a split ring mounted around the flanges of the first and second parts for compression flanges together, and a sealing element. At least part of the clamping element is designed as one elastic part having a possibility of the limb in the open position of the clamping element around the flanges of the first and second parts. A wall section one part overlaps the wall section of the other part, when the compressed condition of the walls and in the assembled state of the sealing element is completely located and compressed between the overlapping parts of the walls of the first and second parts. The clamping element has at least two spaced apart protrusions on its inner surface for placement between the flanges of the first and second parts with the provision of the clamp parts and restrict their movement along the axis in the direction away from each other. In the method for compressing together the first and second parts of the casing shall posledovati. 2 S. and 11 C.p. f-crystals, 4 Il.

The invention relates to a casing that includes a clamping element for fastening together the two parts of the casing, in particular shutter for splicing cables, for example to accommodate telecommunication cables, in particular optical fiber cables or other cables. The invention relates also to a push element for fastening together the two parts of the casing, for example for closing the casing (shell) around the location of the splice.

Casing for cable splices, in which the two parts of the casing are fastened together using a fastening element in the form of a spring ring, known. For example, in U.S. patent 5059748 revealed the cover for cable jointing butt and re-enter the cables containing the base and dome cover. As the base and cover are held on the periphery of the flange, and when the cover is closed, the two flanges will meet together and the clamping element in the form of the United hinged split ring is placed around the flanges and thereby compresses together the base and the cover. The clamping element includes two semi-circular parts, which are connected to each other by hinges so that the item can be opened and placed around the flanges, and reinforcing is installed around the flanges.

In international patent application WO 94/14095 (Raynet Corporation) discloses a squeeze clamp for telecommunications bolt that clamps together the mating part to form a watertight seal. Compressive clamp made in the form of a hinged split ring which can be opened on the hinges and place around the mating surfaces of the parts of the shutter. The clip includes the over-center latch, which can rotate between a first locked position and a second locked position, and the clamping pressure caused by latch, increases to a maximum value as the rotatable latch is moved from its first position to an intermediate position and then decreases from the maximum value, when the latch is moved from the intermediate position to the second position. Corresponding to a predetermined clamping pressure when the latch is in its second (locked) position to compress the O-ring located between the mating parts of the shutter, and by a certain amount.

Although such clamping elements work very well, they are often deobrat together (for example, three parts - the two main hinged semicircular portion of the clamping and fixing device, or located above the center of the latch). Although closing the casing by means of a conventional clamp in the form of a split ring simply by itself, the clamping element is relatively complicated. In addition, it may often be difficult to close the clamping element around the flanges, because, if necessary, the clamping element is designed with a fixed landing and, therefore, the installer often need to use a tool to retrieve the efforts of the lever to bring the hinge part close enough to each other before you can use the mounting device or is located above the center of the latch to fasten them together. Moreover, the opening of the clamping element after it is installed, to gain access to the inside of the casing, too, can often be difficult and will require the use of tools in order to force the lever to raise the hinged part of the clamping element.

One of the objectives of the invention is to provide a clamping element and casing, with such a clamping element, which overcomes the mentioned disadvantages, i.e. which are easier and cheaper to produce and Kono are equally effective and reliable.

According to the first aspect of the invention has a clamping element for clamping together two parts, containing a split ring having at least two separated from each other along the axis of the protrusion on its inner surface to accommodate between them a peripheral flange portions, thereby captures part relative axial movement away from each other, and at least part of the clamping element is designed as a single flexible element, which can bend to allow installation of clamping element around parts.

According to the second aspect of the invention, includes a casing containing:

a) first and second parts, each of which has a peripheral flange; and

b) the clamping element in the form of split rings, which work installed around the flanges of the first and second parts and thereby compresses the parts together;

where at least part of the clamping element is designed as a single flexible item that you can bend to allow installation of clamping element around the flanges of the first and second parts.

Preferably the flanges of the first and second parts are actually around the entire periphery of the corresponding part (for example, if the VOA relevant part). However, in the broadest aspect of the invention, each flange may include one or more discrete protrusions on the periphery of its corresponding part, i.e. the flanges do not need to pass around pieces. Preferably the clamping together first and second parts of the casing closes the casing or at least part of the casing. Preferably the casing is a casing for cable splicing or other casing cable accessories, or for example, conduit or pass-through cable passage.

The invention has the advantage that due to the fact that at least part of the clamping element is designed as a single flexible item, it is usually simpler in design and therefore, it is cheaper to produce than a split annular clamping elements, which are mounted on hinges, so that they can be disclosed. It also has the advantage that as the clamping element is flexible and can bend to allow you to place it around the flanges of the first and second parts, it is usually easier to install around the flanges and remove them, than conventional clamping elements in the form of a split ring.

The term "split ring" means that the element has a closed cross-section for Il can be very large, for example, averaging, say, a third or a quarter of the periphery of the circumference of the clamping element, but preferably it is less than this, for example, is a crack, a crack (cut) or other narrow the gap in the clamping element. Although the clamping element is described as a split ring, in its broadest aspects is not limited to round, oval or other curvilinear shape (although such shape is preferred, especially since the casing seals for cable splices often, though not always, curved in cross-section): clamp may, for example, to have the coal, for example, a polygonal shape.

The term "axis" is meant, primarily, in the same direction as the direction which passes through the axis of the split ring clamping element. For the clamping elements, which have no axis as such, and in principle for the clamping elements, still having an axis, this direction mainly perpendicular to the principle plane of the split ring.

The clamping element preferably has at least two spaced apart from each other along the axis of the protrusion on its inner surface, between which during operation are the flanges of the first and second parts, and when this part of the clip is the first item or material or more such elements or materials between the flanges of the first and second parts. Preferably separated from each other along the axis of the projections form at least one groove passing around the inner surface of the clamping element, in which (whom) are the flanges of the first and second parts and which, therefore, compress (squeeze) the pieces together. Thus, separated from each other along the axis of the protrusions on the inner surface of the clamping element preferably include flanges or ridges, which more preferably are around virtually the entire inner surface of the clamping element.

Above it was mentioned that at least part of the clamping element is designed as one flexible part. In those examples in which only part of the clamping element is designed as one flexible element, this part is preferably passes around the principle of just clamping element, However, it is most preferable that all the clamping element was made as a one flexible element. This has the advantage that is associated with simplicity, and, consequently, is usually to produce the clamping element is easy and not expensive. The clamping element may be formed from two or more parts that are joined together so that the finished clamping element sustained fashion from a single piece of material. For example, the clamping element may be formed, preferably as one piece. Since the clamping element has a slot and is flexible, it can conveniently be molded without the necessity of applying without forming sliders to ensure its removal from the form, which further reduces the cost of manufacture.

Preferably the clamping element is elastic and flexible. This has the advantage that it can usually tightly compressing the flanges of the first and second parts, and preferably it is held in place due to its own elasticity. However, regardless of the elastic clamping element or not, it preferably has fastening means for fastening it in place around the flanges of the first and second parts. The fastening means may be integral with the clamping element or may constitute one or more separate elements. For example, it may include seizure or the like to hold along each side of the slot, or it may include tightening the wrapper or the like, is placed around the clamping element to prevent it from accidentally disclosed. Such means of attachment preferably is simple and not expensive and usually not and second parts, the clamping element is preferably placed around the flanges consistently. For example, the clamping element can be placed around the flanges, consistently pushing him over the flanges. This differs from the usual clamping elements in the form of a split ring that is placed around both flanges at the same time.

Accordingly, a third aspect of the invention provides a method for compressing together the first and second parts of the casing, and the casing is a casing according to the second aspect of the invention, and the method includes the sequential placement of the clamping element around the flanges.

The clamping element can be successfully pre-installed around one of the flanges and then it can optionally be placed around the second flange to compress together the first and second parts. For this purpose, the clamping element can have a groove or the like, which is placed flange around which pre-positioned the clamping element or part of the casing, which pre-installed the clamping element can have an additional flange, which relies on the clamping element, thereby securing in place the pre-set clamping element around the flange to compress together the first om information along their flanges, what makes you push the clip over the other flange. When used this way the clamping element according to the invention provides a special lightness compression together of the first and second parts. One of the advantages is that since the clamping element pre-installed around one of the flanges, it can facilitate the correct alignment of the two parts and keep it aligned properly, when they are brought together, i.e., the clamping element can act as a leveling hosting and/or guiding means for the parts. This is especially useful in some cases in which the sealing element such as O-ring, is located between the first and second parts, because traditionally in the case of such enclosures often the installer was difficult to properly set the first and second parts and the O-ring and support it to the correct location, bringing together the first and second parts (which usually entails the compression of the O-ring between the first and second parts at the same time). This is explained in more detail and described below with reference to the drawings.

As already mentioned, the clamping element is preferably mounted either sequential pushing him n who are brought together, thereby pushing the clamping element over the other flange. These installation methods have the advantage that they are easy to perform, and that they avoid having to make the clamping element is flexible enough that he could fully open, so it can be wrapped around the casing similarly to standard articulated clamping elements. When using any of these preferred installation methods only need to perform the clamping element is flexible enough to allow the entire push-on element to increase its diameter by an amount equal to the height to which the flanges protrude from the wall of the casing, instead of making it flexible enough to allow enough slots to expand, so that it could accommodate the entire width of the casing, when the clamping element wrapping up around the casing. Accordingly, in some preferred examples of carrying out the invention the clamping element only flexible enough to allow you to push him over the flanges of the first and second parts.

Preferably the portion of the clamping element or/and one or each of the peripheral flange of the casing has a tapered surface that helps taginator as the clamping element, and one or each of the peripheral flange had such conical surface and the conical surface interact with each other to help straighten the clamping element when he is at work pushed over the flange.

The first and second parts preferably have a round or oval cross-section, more preferably, at least one of the parts has the shape of a tube. The parts preferably are brought together along the axis to compress them at work, each peripheral flange preferably annular. Particularly preferably, the site of one of the parts overlap area of the other part, when they are compressed together during operation. Preferably, when the sealing element seals the space between the overlapping areas of the first and second parts. For example, one part can slide on the peripheral surface of the other part, preferably the sealing element such as O-ring seals the space between the peripheral surface and overlying the inner surface of the other part. It is useful to slide one part of the casing on the other side could force the sealing element (such as O-shaped to kojiniu. For example, before sliding one part on another part of the sealing element can be placed on the peripheral surface of the portion of the casing, which is closed near its edge, while sliding the other part under this part may roll sealing element along the peripheral surface of the overlapped part to the final sealing position. Particularly preferably, the outer peripheral surface of the overlapped part was tapered or stepped, so that when the sealing element is heading to its final sealing position, it is more and more compressed.

Preferably the sealing element is compressed, preferably in a radial direction between the overlapping areas of the first and second parts of the casing. This has the advantage that the clamping element is usually compresses together the first and second parts just to prevent axial separation of them from each other (i.e., not letting them slip to each other), and not directly to overcome the elasticity of the sealing element (for example, O-ring, which is compressed between them (as in the case of the pressure clamp disclosed in WO 94/14095). This is useful because usually helps to avoid the need for the implementation effort provide compressed sealing element, which arise due to its elasticity (as in the case of the pressure clip in WO 94/14095), and therefore usually makes the clamping element is cheaper to manufacture.

Now the invention will be described, as an example, with reference to the accompanying drawings, in which:

Fig.1 shows in perspective the clamping element according to the invention;

Fig. 2 shows in perspective another clamping element according to the invention;

Fig. 3A and 3b show the cross section of the casing according to the invention, comprising a clamping element of Fig.1;

Fig. 4A and 4b show in cross section of another casing according to the invention, comprising a clamping element of Fig.2.

Each of figs.1 and 2 shows the clamping element 1 according to the invention, containing a split ring, made out of one piece. Preferably, clamping elements 1 contain plastic material, such as polypropylene, but they may contain, for example, metal. Each has a slot 3 to ensure it is installed around the flanges of the first and second parts of the casing or other products for their clutch together. Each clamping element 1 has the groove 5 at its radial inner peripher what about the axis of the protrusions 6 in the form of flanges or ridges and in which during operation are peripheral flanges of the first and second parts. Thus the clamping element compresses together the first and second parts. The clamping element 1 shown in Fig. 2, has an annular ridge 7, the separating groove 5 along the axis of the two, with each part of the groove 5 is made with the possibility of accommodation in one of the flanges. The lower part 9 of the groove 5 (as in the drawing) is designed to accommodate the flange of one part of the casing, on which the clamping element when working pre-installed. The upper part 11 of the groove is designed to accommodate the flange of the other shell part.

In Fig.3A and 3b shows the cross section of the casing for a cable splice according to the invention, containing the cover or the first part 13, the base or the second part 15, the clamping element 1 shown in Fig.1, and a sealing element in the form of an O-ring. The cover is designed to snap splicing method for end-to-end connection, and when working cables pass into the casing through the base 15. No holes for entrance cables (which are usually present) is not shown.

In Fig. 3A, the casing is shown before the first part 13 and the second part 15 is bonded together. The clamping element 1 was pre-installed on the second part 15, and the clamping element is placed around the peripheral flange 19 of the second CHy first and second parts can be put together, simply bringing together the flanges, the second part has a second peripheral flange 21 for the first peripheral flange 19. Thus, the clamping element 1 is captured between the flanges 19 and 15 and, consequently, held in place by a peripheral flange 23 of the first part and the clamping element 1 have a cone-shaped surface, specified as 25 and 27, respectively, which in Fig.3V rest against each other, and the front section 29 of the first part 13, as shown, passes between the part of the clamping element 1 and the sealing element in the form of O-ring 17, which is placed around the peripheral surface 31 of the second part 15. Thus, the first part 13 is located in the correct position to compress together with the second part 15.

In Fig.3b shows the cover after compressing together the first and second parts. This was achieved simply by moving the first and second parts toward each other, which made tagnuts flexible elastic clamping element with a cooperating conical surfaces 25 and 27 and allowed peripheral flange 23 of the first part 13 to enter into the clamping element. Thus permitted snap fit inside, but you cannot rassenti. During displacement of the first part 13 against kerinou surface 31 of the second part and overlying the inner surface 33 of the first part and formed a seal between these two surfaces. The front section 29 of the first part 13 is located in the receiving groove 35 in the peripheral flange 19 of the second part. The movement of the first part 13 in the clamping coupling with the second part 15 was directed clamping element 1, thereby helping the installer.

Fig.4A and 4b show the same concatenation operation performed using a different casing. Equivalent element are given the same reference position as in Fig.3A I. 3b.

The difference between housing in Fig.4A and 4b is that, whereas in the latter the clamping element was pre-installed on the base or the second part 15, in the first clamping element was pre-installed on the cover or the first part 13. The clamping element shown in Fig.4A and 4b, it is one that is shown in Fig.2. The flange 23 in advance is set out in part 9 of the groove 5 of the clamping element, and therefore the clamping element is held in the correct axial position relative to the first part 13 to accommodate the second part 15 passing around the circumference of the ridge 7. The clamping element has a tapered surface 25, similar to those shown in Fig.3A and 3b, but it is a peripheral flange 19 of the second part 15, which has a cooperating conical surface 37, unlike planetarium flange, acting on it, the clamping element in the form of a split ring mounted around the flanges of the first and second parts, and the sealing element, wherein the clamping element is designed as one elastic part having a possibility of the limb in the open position of the clamping element around the flanges of the first and second parts, and a wall section one part overlaps the wall section of the other part, when the compressed condition of the walls and in the assembled state of the sealing element is completely located and compressed between the overlapping parts of the walls of the first and second parts, when the clamping element has at least two spaced apart protrusions on its inner surface for placement between the flanges of the first and second parts with the provision of the clamp parts and restrict their movement along the axis in the direction away from each other, and part of the clamping element and/or one or each peripheral flange wall of the casing has a tapered surface to provide limb of the clamping element to the open position when it is pushing on the flange (or flanges).

2. The casing under item 1, characterized in that the spaced apart along the axis of the protrusions on the inner surface of SAG the P CLASS="ptx2">

3. The casing according to any one of the preceding paragraphs, characterized in that, in principle, all the clamping element is designed as a single elastic details.

4. The casing according to any one of the preceding paragraphs, characterized in that the clamping element is made sufficiently elastic and flexible, with the possibility of disclosure of overcoming all of elasticity by an amount equal to the height of these flanges projecting from the wall parts, so that it can be pushed over the flanges to compress them together.

5. The casing according to any one of the preceding paragraphs, characterized in that the first and second parts have basically round or oval cross-section, preferably at least one of the parts represents the pipe, with parts made with the possibility of their information when working axis to compress together, and each specified peripheral flange is made of a ring.

6. The casing according to any one of the preceding paragraphs, characterized in that the plot is one of the parts made with the possibility of sliding on the peripheral surface of the second part with the provision of the rolling seal between the two parts along the peripheral surface from the initial position to a final sealing plovernet part, sliding on the peripheral surface, is made conical or/and provided with a step for greater compression of the sealing element when it is rolling in the final sealing position.

8. The casing according to any one of the preceding paragraphs, characterized in that the clamping element compresses together the first and second parts without sliding off each other.

9. The casing according to any one of the preceding paragraphs, characterized in that it constitutes a casing for cable splicing.

10. The method for compressing together the first and second parts of the casing, wherein the casing is performed according to any one of the preceding paragraphs, the method includes the sequential installation of the clamping element around the flanges.

11. The method according to p. 10, characterized in that the clamping element is set around the flange by a consistent push on them.

12. The method according to p. 10 or 11, characterized in that the clamping element is pre-set around one of the flanges and the first and second parts sequentially compress together by their flanges and securing the push clamping element over the other flange.

13. The method according to p. 12, atricauda another part of ensuring frictionless seal between the two parts along the specified peripheral surface from an initial position to a final sealing position.

 

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SUBSTANCE: group of inventions relates to coupling for pipes. Device for seal pressing comprises a sealing element, having an axial length and outer curved edge, pressed against the inner diameter of seal, besides the indicated sealing element has an axial row of mounting holes for placement of mechanical fastening means in them, and, at least, one vane extending portion, passing from the end of indicated sealing element and curved inwardly from the indicated outer curved edge of the sealing element.

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12 cl, 5 dwg

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