JP3004610B2 - Cable fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp-type cable fixing device used for fixing an optical cable or an electric wire.

[0002]

2. Description of the Related Art For example, when an optical cable or an electric wire is pulled and fixed to a base surface, for example, when an optical cable is drawn into an optical cable connection box and fixed thereto, a fastening portion to a base such as a screw hole is provided. Clamping is performed using a holding member made of a curved plate material.However, since the thickness of the cable is various, to clamp using such a holding member, a large number of holding members are required according to the thickness of the cable. Failure to do so may result in improper fixation or improper fixation.Preparing a large number of holding members requires high costs for dies, etc., and inconvenient inventory management. Various problems.

[0003]

An object of the present invention is to solve the above-mentioned problems of the prior art and to easily and accurately connect cables having different thicknesses without preparing many types of holding members. An object of the present invention is to provide a clamp-type cable fixing device that can be fixed to a cable.

[0004]

According to the present invention, there is provided a cable fixing device which solves the above-described problems, includes a pressing member having a cable intervening space having an arcuate pressing surface on an inner surface of a ceiling, and a cable intervening space. The elastic pillow material is formed by stacking a plurality of elastic thin plates that can be separated into a plurality of elastic thin plates in which a space for curving assistance is formed in the center of the back surface with a width that can intervene in accordance with the thickness of the cable. A basic structure of a cable fixing device that allows cables having different thicknesses to be accurately clamped with the same pressing member by changing the number of sheets. In such a cable fixing device, a concave portion and a convex portion are arranged at corresponding positions on the front and back of each elastic thin plate, and all the elastic thin plates are overlapped under engagement of the concave portion and the convex portion. According to the invention according to claim 2, the elastic thin plates are not separated at the time of handling, but the work for separating while leaving the required number of sheets can be performed very easily. According to the present invention, the lowermost elastic thin plate can be easily positioned on the base by disposing the engaging portion for engaging the convex portion of the lowermost elastic thin plate on the base. An invention according to Item 3 is provided.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a preferred embodiment of the present invention will be described in detail with respect to a clamp-type cable fixing device shown in the drawing, which is used for drawing and fixing an optical cable into an optical cable connection box. Reference numeral 1 denotes a pressing member which is formed by bending an elastic hard synthetic resin plate or a metal plate so that an inner surface thereof is formed as an arc-shaped cable pressing surface 2. Reference numeral 11 denotes a plurality of curable elastic thin plates used together with the pressing member 1. 12
The elastic pillow material 21 is a base.

In the illustrated example of the pressing member 1 described above, two substantially semicircular peaks having an arc-shaped cable pressing surface 2 on the inner surface reduce the depth of the valley between them to approximately half of the height of the peak or to a height of approximately half that of the peak. A space formed between both skirts continuously as described below is defined as a cable intervention space 3, and screw insertion holes as fastening portions 4, 4 to the base 21 are provided at both hem ends. However, fastening portions 4 and 4 to the base 21 may be provided at both hem ends of a substantially semicircular crest having an arc-shaped cable holding surface 2 as an inner surface, and in any case described above. The arc-shaped cable holding surface 2 has a radius of curvature equal to that of the cable 31.
Is slightly larger than the radius of curvature.

On the other hand, the elastic pillow material 11 is formed by stacking a plurality of elastic thin plates 12 made of an elastic insulating material such as synthetic rubber having a width capable of intervening in the cable intervention space 3 so as to be separable. In the center of the back surface of each elastic thin plate 12, the back surface is partially recessed, or the height of a convex portion 15 described later is
A space 13 is formed to be larger than the depth of the space 4 for assisting the curvature. Also, a plurality of concave portions 14 and convex portions 15 are uniformly arranged at corresponding positions on the front and back of each elastic thin plate 12, and the concave portions 14 and convex portions 15 are superposed so as to be separable by engaging with each other. I have. Note that 16
Is a groove provided on the back surface so as to divide the elastic thin plate 12 at the center.

The base 21 has a fixing screw insertion hole 22 for screwing to a cable connection box (not shown) and a tightened portion 2 corresponding to the tightening portion 4 to the base 21.
It is a bracket of the reverse groove type provided with 3, 23,
This bracket has an elastic pillow material 1 on its top plate.
A hole or a concave portion is provided as an engaging portion 24 for engaging the convex portion 15 of the elastic thin plate 12 serving as the lowermost layer of
A protrusion 2 is provided at one end of one leg plate portion corresponding to one diagonal corner of the bracket and at the other end of the other leg plate portion.
5 and 25 are provided, and the projections 25 and 25 are inserted into locking holes provided in a cable connection box (not shown), so that the bracket serving as the base 21 is screwed into the cable connection box. Rotation is regulated.

[0009] With the above-mentioned structure, the cables 31 mounted on the base 3 are interposed with cables to partially fix cables such as optical cables and electric wires drawn inside the optical cable connection box and the like. The cables 31 are pressed by the arc-shaped pressing surface 2 on the inner surface of the ceiling by tightening the tightening portions 4 at both ends while straddling the pressing member 1 so as to intervene in the space 3. Is similar to a conventional cable fixing device of this type, but in the present invention, an elastic thin plate 1 having a width capable of intervening in the cable intervention space 3 is used.
Since the elastic pillow material 11 in which a plurality of sheets 2 are detachably stacked is used together with the pressing member 1, for example, a base in which cables 31 are screwed to a cable connection box or the like through the fixing screw insertion hole 22. 21 so as to pass over the cables 31.
When the holding member 1 is straddled, the elasticity of the elastic pillow material 11 is set so that the height of the cable intervention space 3, that is, the distance between the surface of the base 21 and the arc-shaped holding surface 3 is slightly smaller than the thickness of the cables 31. The number of the thin plates 12 is selected, and this elastic pillow material 11 is interposed between the base 21 and the cables 31. Then, the holding member 1 is straddled on the base 21 so that the above-mentioned cables 31 are interposed in the cable intervention space 3, and screws are inserted through the screw insertion holes, which are the fastening portions 4, 4 at both ends, so that the cables 31 are always inserted. When tightened by the method, the cables 31 are pressed without being flawed by the arc-shaped pressing surface 3 formed on the inner surface of the ceiling of the pressing member 1, and are provided at the center of the back surface of the elastic thin plate 12 for the curvature assisting. The elastic thin plate 12 is more accurately curved along the cable surface by the space 13, so that the elastic pillow material 11 in which a plurality of the elastic thin plates 12 are separably stacked corresponds to the surface shape of the cables 31. It will bite while elastically deforming to the shape to be formed. Accordingly, not only can the cables 31 having different thicknesses be fixed accurately without changing the number of the elastic thin plates 12 of the elastic pillow material 11, but also the cables 31 can be formed into an arc shape by the restoring force of the elastic pillow material 11. Since it is properly held between the holding surface 3 and the holding surface 3, an excellent fixing strength can be obtained.

At the time of the above-mentioned tightening, as shown in the above-mentioned embodiment, the upper and lower elastic thin plates 12
When the recesses 12 are overlapped with each other by engaging the concave portions 14 and the convex portions 15 disposed at the corresponding positions on the front and back of each elastic thin plate 12, the engagement between the concave portions 14 and the convex portions 15 is made. Since all the elastic thin plates 12 are held in an overlapping state under the joint,
In addition to the fact that the elastic thin plates 12 are not separated apart during handling, the work of separating only the required number of sheets can be performed very easily. Further, as described above, the elastic thin plate 12 is divided at the center by the groove 16 formed on the back surface, so that the elastic thin plate 12 is easily curved in each cable intervention space 3 appropriately. Since the grooves 16 can be divided, the number of the elastic thin plates 12 used in the left and right cable intervention spaces 3 can be made different so that cables having different thicknesses can be grasped at a time. Further, if the engaging portion 24 for engaging the convex portion 15 of the lowermost elastic thin plate 12 of the elastic pillow material 11 is provided on the base 21, the lowermost elastic thin plate 1 is provided.
2 can be easily positioned in a stable state on the base 21, which is more preferable.

[0011]

As is apparent from the above description, the present invention relates to a case where cables such as an optical cable and an electric wire are partially fixed by a holding member having a cable intervention space having an arc-shaped holding surface on an inner surface of a ceiling. By using an elastic pillow material in which a plurality of elastic thin plates having a width capable of intervening in the cable intervening space are detachably stacked, cables having different thicknesses can be accurately and easily fixed with one kind of pressing member. Therefore, there are many advantages, such as a reduction in wasteful costs for a mold for manufacturing the holding member and a convenient inventory control. Therefore, the present invention is extremely useful as a solution to the problem of the conventional cable fixing device of this kind.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of the present invention.

FIG. 2 is a front view of a use state showing a preferred embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Holding member 2 Arc-shaped pressing surface 3 Tightening part 11 Elastic pillow material 12 Elastic thin plate 13 Space for curvature assist 14 Side plate part on concave side 15 Convex part 16 Groove part 21 Base 22 Screw insertion hole for fixing 23 Tightened part 24 Engagement part 25 Projection

Claims (3)

(57) [Claims] A pressing member (1) in which a cable intervention space (3) having an inner surface of a ceiling as an arc-shaped pressing surface (2) is formed, and a central portion of the rear surface having a width capable of intervening in the cable intervention space (3). A cable fixing device comprising: an elastic pillow material (11) in which a plurality of elastic thin plates (12) having a space (13) for assisting a curve formed thereon are separably stacked. 2. The elastic thin plates (12), (12) being each elastic thin plate (12).
The concave part (14) and the convex part (15) arranged at the corresponding positions on the front and back of
The cable fixing device according to claim 1, wherein the cable fixing device is overlapped with the cable fixing device. 3. The cable fixing device according to claim 2, wherein an engaging portion (24) for engaging the convex portion (15) of the lowermost elastic thin plate (12) is provided on the base (21). .