JP4229386B2 - Cable gripping device - Google Patents

Description

  The present invention relates to an improvement of a cable gripping device for clamping an optical fiber cable or a coated electric wire cable.

As a cable gripping device for clamping a cable when optical fiber cables are inserted into and exited from a connection box, a device as described in Patent Document 1 has been proposed.
This is an optical fiber cable gripping device having a tension member on the optical fiber core. After inserting the optical fiber cable into the through hole of the cap, the optical fiber cable is inserted into the U slit portion at the same time as the cap is fitted into the base. The optical fiber cable is fixed at a predetermined position by pushing in.
Japanese Patent Laid-Open No. 2003-6624: See FIG. 1, FIG. 2, and FIG.

  In the case of such a cable gripping device, a U-slit portion is fitted into an optical cable fixing portion molded from resin or the like, but a molded product such as resin can be manufactured at a low cost when mass-produced. In the case of small-scale production, there is a problem that it becomes expensive considering the mold cost and setup time. Furthermore, since it is necessary to secure a space for the gripping device for each target cable, it is difficult to make the connection box that accommodates the gripping device compact.

  The present invention has been made to solve the above problems, and provides a cable gripping device that can reduce the manufacturing cost of the gripping device itself and is effective for space saving.

The above problems are at least two comb-like plate material displaced Succoth having in parallel a plurality of slits, and provided with a step having a respective corner portions, to form a composite slits integral, the composite slits The cable is gripped by pushing the cable through the opening at the tip, and the corner of the step and the outer skin of the pushed cable are locked to solve the problem. be able to.

The present invention can be preferably embodied in the following forms.
1) In the above invention, the cable is an optical fiber cable in which a tension member is attached to an optical fiber core.
2) In any one of the above inventions, each of the comb-like plate materials having integrated slits is obtained by punching a steel plate material into a comb-teeth shape having the same shape.
3) The said invention WHEREIN: The form which arranged the cover member which can open and close the opening part of the composite slit front-end | tip so that it could fix to the integrated steel plate comb-shaped board | plate material.

  Since the cable gripping device of the present invention is formed by shifting and integrating a plurality of comb-like plate materials in which a plurality of slits are arranged in parallel, it can be configured by a simple punching or bending press product. Unfortunately, it can be manufactured inexpensively. Furthermore, a plurality of cables can be fixed to the same composite slit. In addition, since the cable can be similarly fixed to each adjacent composite slit, there is an advantage that a single cable gripping device of the present invention can be used for many cables.

  Furthermore, according to a preferred embodiment of the present invention, since the comb-like plate material obtained by punching the steel plate material into a comb-like shape having the same shape is integrated, the number of parts can be reduced, and the manufacturing cost also from this point. Is cheaper. Moreover, there is an excellent effect that the cable can be prevented from being pulled upward by a cover member that covers the opening so as to be freely opened and closed. Therefore, the present invention has a very large practical value as a cable gripping device that has solved the conventional problems.

Next, an embodiment according to the cable gripping device of the present invention will be described with reference to FIGS.
The cable gripping device of the present invention is characterized by a first comb-like plate material 2 having a plurality of slits 21 and 21 in parallel and a second comb-like shape having a plurality of slits 31 and 31 in parallel. The plate material 3 is configured as at least a member. The at least two comb-like plate members 2 and 3 are shifted and integrated to form composite slits 4 and 4 having steps 41 and 41 having corners 41a and 41a, respectively, and an opening 42 at the tip of the slit, The cable 5 is pushed in from 42, and the corner 41a of the step 41 and the outer skin of the pushed cable 5 are locked to make the cable 5 grippable.

  1-3, the 1st comb-tooth-shaped board | plate material 2 consists of the vertical part 22 which formed the comb-tooth which has several slits 21 and 21 in parallel, and the horizontal part 23 which makes a substantially L-shaped leg shape. Become. The horizontal portion 23 is provided with a fixing hole 23a for fixing to a base member (not shown) or a semicircular cutout 23b that can be engaged with a protrusion (not shown) on the base member side. It is good to keep. In the figure, the upper folded portion 24 is provided with a fixing hole 24a for the cover member 6 to be described later.

  The second comb-like plate material 3 is a flat plate having a plurality of slits 31, 31 having the same width and spacing as the slits 21, 21 of the first comb-like plate material 2, and this second comb-like plate material. 3, the slits 31, 31 are shifted and integrated with the slits 21, 21 of the first comb-like plate member 2 so as to have a step 41, 41 between the comb teeth on the front and back sides. The composite slits 4 and 4 penetrating therethrough are formed.

  In the present invention, the composite slits 4 and 4 formed between the respective comb teeth are thus provided with steps 41 and 41 having corner portions 41a and 41a, respectively. When the cable 5 is pushed in from the openings 42, 42, the corner 41a of the step 41 and the outer skin of the pushed cable 5 are locked, and a reliable gripping state is realized. From such a viewpoint, it is preferable to set the slit width dimension of the composite slit 4 and the dimension of the step 41 to preferable values in advance according to the target cable size.

In order to obtain such a preferable composite slit 4, when each of the comb-like plate members 2 and 3 is a metal, both may be fixed and integrated by welding or bonding. And it becomes possible to respond | correspond to several types of cables from which size differs by adjusting a welding position. Further, the interval may be adjustable by screwing both of them with a long hole.
Moreover, since this composite slit can generally be formed in a shape having a depth larger than the thickness of the target cable, in this case, it is also possible to hold a plurality of cables in one composite slit.

  In the present invention, the target cable 5 is most preferably an optical fiber cable in which a tension member is attached to an optical fiber core, but is not limited thereto. Further, each of the comb-like plate materials 2 and 3 of the present invention is preferably a material having an appropriate mechanical strength for the purpose, and if the steel plate material is punched into the same shape of a comb-teeth shape, the number of manufacturing steps The cost is advantageous because of being suppressed.

  In this case, the thicknesses of the comb-like plate materials 2 and 3 do not have to be the same. If one plate is thin, for example, if the overall strength is maintained by the first comb-like plate material 2, the other second comb Even if the tooth-like plate material 3 is made thinner than that, there is an advantage that the same gripping effect can be obtained and the cost becomes more advantageous.

  Furthermore, in the present invention, the cover member 6 is rotatably attached to the fixing hole 24a of the upper folded portion 24 in the first comb-like plate member 2, as shown in FIGS. It is preferable to be able to open and close the opening 42 at the tip of the composite slit 4 because it is effective for preventing the cable from coming off.

The perspective view for demonstrating the cable gripping apparatus of this invention. The perspective view which shows embodiment which provided the cover member. The perspective view which shows embodiment of the state which closed the cover member. The top view which shows embodiment of the state which fixed the cable. The horizontal cross section end view of the principal part of a comb-tooth part.

Explanation of symbols

2: first comb-like plate material, 21: slit, 22: vertical portion, 23: horizontal portion, 23a: fixing hole, 23b: semi-circular cutout, 24: folded portion, 24a: fixing hole 3: second Comb-shaped plate material, 31: slit 4: compound slit, 41: step, 41a: corner, 42: opening 5: cable

Claims (3)

At least two comb-like plate material displaced Succoth having in parallel a plurality of slits, and provided with a step having a respective corner portions, to form a composite slits integrally, from the opening of the composite distal slit A cable gripping device characterized in that a cable can be gripped by gripping a corner of the stepped portion and an outer sheath of the pressed cable. The cable gripping device according to claim 1, wherein the cable is an optical fiber cable in which a tension member is attached to an optical fiber core wire. The cable gripping device according to claim 1 or 2, wherein each of the comb-like plate materials having the integrated slits is obtained by punching a steel plate material into a comb-teeth shape having the same shape.

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