JP2574107Y2 - Multi-core cable holding device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core holding device for a multi-core cable, and more particularly to a core holding device used for untwisting a core of a multi-core cable.

[0002]

2. Description of the Related Art In many round multi-core cables 100, in order to clarify the positional relationship between the inner core wires, the core wires 10 are concentrically arranged radially from the center.
0a is formed (FIG. 4). In addition, adjacent core layers are twisted in opposite directions so that the relative position of the core 100a does not shift. Also, in some types of multicore cable, a pair of cores is twisted to reduce crosstalk. The twist (twist) between these cores becomes an obstacle when connecting the cores to the terminals arranged in a row in the connector. Therefore, prior to the connection work, untwist the core wire,
The conductors need to be aligned.

[0003] As a device for holding a core wire in order to loosen the twist of the above-mentioned core wire, a core holding device 101 shown in Fig. 5 has been proposed (Japanese Patent Laid-Open No. 60-91580). The cord holding device 101 includes a pair of rectangular parallelepiped arms 101b and 101c vertically and vertically separated from each other, and an air cylinder 101e connected to one arm 101c. One pair of arms 101b, 10
Core wire at the end of round multi-core cable 100 sandwiched between 1c
The twist of the wire 100a is loosened by pulling the round multi-core cable 100 in the axial direction while being vibrated by the air cylinder 101e.

However, in the cord holding device 101, since the cord contact surfaces of both arms 101b and 101c are formed relatively wide, friction with the cord 100a is large, and the covering of the cord 100a is damaged. May be attached. The core wire contact surfaces of both arms 101b and 101c are usually formed of a material having a low coefficient of friction such as Teflon in order to reduce friction with the core wire 100a. However, the friction with the core wire 100a inevitably causes unevenness on the core wire contact surface, and thus the function of untwisting the core wire 100a is reduced. For this reason, each arm 101
It is necessary to replace b and 101c (the core contact surface), but in the case of the core holding device 101, the structure is not particularly easy to replace the arm 101c.

[0005] Therefore, the core contact member 102 shown in FIG.
A cord holding device having the following has been put to practical use. Since the core wire contact members 102 are made of a material such as Teflon and the core wire contact surface 102a is formed in a cylindrical surface, friction with the core wire is small. Therefore, damage to the sheath of the core wire is extremely small. Moreover, since the core wire contact members 102, 102 are fixed to the arms 103, 103 with screws (not shown),
Easy to replace.

However, the core wire contact member 102 is severely worn due to its material and the shape of the core wire contact surface 102a, and needs to be replaced frequently. Further, since the shape of the core wire contact member 102 is relatively complicated, the forming process is expensive. For this reason, the running cost of the core holding device cannot be ignored.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a core pinching device which causes less damage to the sheath of the core, does not require frequent replacement of the core contact member, and is easy to replace. And

[0008]

According to the present invention, there is provided a core holding device for a multi-core cable according to the present invention, comprising a pair of arms separated in parallel and the arm .
An apparatus for clamping a core wire group of the tip of the multi-fiber cable which stripped the jacket between arm, in a position facing each other of the arms
It is characterized by having a core contact member having a smooth cylindrical surface and a gripping member for gripping and fixing the core contact member at an arbitrary rotational position in the circumferential direction .

[0009]

When irregularities occur on the core contacting surface of the cylindrical core contacting member, the gripping of the core contacting member by the gripping member is loosened and the core abutting member is fixed around the axis thereof. Rotate the angle.
As a result, an unworn core wire contact surface appears. Alternatively rotated naturally due to friction with the core wire, it avoids local wear that due to contact with the core wire at all times one place.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the multi-core cable holding device of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a preferred embodiment of the multi-core cable holding device of the present invention. FIG. 2 is a front view of the cord holding device of FIG. FIG. 3 is an enlarged view of FIG.

The multi-core cable core holding device 10 includes a fixed arm 50 directly fixed to the base 12 and rails 16 and 18 provided on a vertical plate 14 mounted on the base 12 in the directions of arrows A and B. And a movable arm 70 that slides on the arm. The movable arm 70 is urged in a direction indicated by an arrow B by compression springs 24, 26 each having one end supported by a spring accommodating portion 20, 22 provided on the vertical plate 14.

In FIG. 2, the operation lever 30 has one end supported on the vertical plate 14 by a support shaft 32, and connects between a support shaft 34 near the support shaft 32 and a support shaft 36 on the movable arm 70. The movable arm 70 is driven by the link 38. Therefore, the operation lever 30, the link 38, and the support shafts 32, 34, and 36 are moved by the movable arm 70.
Is constituted. Link 38 is two link parts 4
0 and 42 are connected via a screw 44, and the length of the link 38, that is, the distance from the support shaft 34 to the support shaft 36 can be adjusted by the screw 44. The distance from the support shaft 32 of the operation lever 30 to the operation portion 30a is set to be extremely large as compared with the distance from the support shaft 32 to the support shaft 34 at one end of the link 38. Therefore, the force required to rotate the operation lever 30 is significantly reduced as compared with the force required to compress the compression springs 24 and 26, thereby improving workability. In the position of the operation lever 30, the core wire contact members 58 and 78 of the arms 50 and 70 are in contact with each other at the position of the solid line, and at the position of the two-dot chain line 30 ', the axis of the operation lever 30 is the support shaft 32. Since it is located below the extension line 46 connecting the support shaft 36 and the support shaft 36, it does not move at both positions. Therefore, since a latch means for maintaining the operation lever 30 at both positions is unnecessary, a step of releasing the latch means is not required, which contributes to an improvement in workability.

In FIG. 3, each arm 50, 70
2, 72, gripping members 54, 56, 74, 76 and cylindrical core contact members 58, 78. The grip members 54, 74 are fixed to the side plates 52, 72 by bolts 60, 80, and the grip members 54, 56, 74, 76
Are connected to each other by bolts 62, 82. The distal ends 64, 66, 84, 86 of the gripping members 54, 56, 74, 76 protrude inward to prevent the core wire contact members 58, 78 from coming off. Each of the cord contact members 58 and 78 is made of a resin having a low coefficient of friction such as Teflon, and has tapered surfaces 68 and 88 at one end so as to easily receive the cord group (FIG. 2).

Next, an operation process for untwisting the core wire using the clamping device 10 will be described with reference to FIG. First, the operation lever 30 is rotated in the direction of arrow C to the position shown by the two-dot chain line 30 'against the bias of the compression springs 24, 26. Since the movable arm 70 moves in the direction of arrow A by this rotation, the core wire contact members 58 and 78 are separated from each other, and a gap is formed. The distal end of the core group of the round multi-core cable with the jacket stripped is inserted into this gap. Next, when the operation lever 30 is rotated in the direction of arrow D, the group of core wires is compressed by the compression springs 24 and 26 to a predetermined load (for example,
At 10 kgf), it is sandwiched between the core wire contact members 58 and 78. Pull out the cable in this state. By repeating the above steps, the twist of the core wire is gradually loosened, and after several operations, the twist of the core wire is almost completely unwound without damaging the sheath of the core wire, and the core group is aligned in a line I do.

The core wire contact members 58 and 78 are formed by friction with the core wire.
If the cylindrical contact surface of the
2, 82 are loosened, and the core wire contact members 58, 78 are rotated by a predetermined angle (for example, 30 °) in the directions of arrows E, G or F, H shown in FIG. 3, and then the bolts 62, 82 are tightened. This gives rise to a new, unworn cylindrical abutment surface.

The cylindrical core contact members 58 and 78 are 10 times or more longer than conventional core contact members, so that they are extremely economical. In addition, it can be supplied at low cost because a standard round bar is used and no special processing is required.

The preferred embodiment of the multi-core cable holding apparatus of the present invention has been described above. However, the present invention should not be limited to only the above embodiment, and it goes without saying that various modifications and changes can be made as necessary. For example,
The core pinching device of the present invention has the advantage that it can be operated even if there is no power supply or an energy supply source such as a compressed air supply source because it is manual, but if necessary, the arm is driven by a power supply motor, an air cylinder, etc. Is also good. Also arm
Not only one of 50 and 70 but also both arms may be movable. Furthermore, a tapered surface need not be formed at one end of the core abutting member as long as the insertion of the core group into the gap between the two core abutting members does not hinder the insertion. Also,
Hold the core wire contact members 58 and 78 relatively loosely with the gripping members,
It may be configured to rotate slightly when pulling and squeezing the cable. It should be understood that the term “cylindrical” used herein includes not only a hollow shape but also a cylindrical shape in which the same or different material is filled in the center.

[0019]

According to the multi-core cable holding device of the present invention, the multi-core cable holding device has a smooth surface for holding the multi-core cable.
The member is gripped by the gripping member at any rotational position in the circumferential direction.
Is fixed, so the core contact surface of the core contact member is worn.
Change the direction and use a surface that is not always worn.
It has a very long life and is effective
Work can be done

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a multi-core cable holding device of the present invention.

FIG. 2 is a front view of the cord holding device of FIG. 1;

FIG. 3 is an enlarged view as viewed from an arrow J in FIG. 2;

FIG. 4 is a sectional view of a round multi-core cable.

FIG. 5 is a perspective view showing a conventional cord holding device.

FIG. 6 is an enlarged perspective view of another conventional example of a core wire clamping device.

[Explanation of symbols]

 10 core clamp device 50, 70 arm 54, 56, 74, 76 gripping member 58, 78 core contact member

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02G 1/14 H01R 43/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A multi-core cable having a pair of arms spaced parallel to each other and a driving member for moving the pair of arms closer to and away from each other, with a sheath stripped between the pair of arms. Oite the device for holding the group of lines, cross the surface at opposite positions smooth to a cylindrical core wire contact member and the circumferential direction of the responsibility of the core wire contact member of said arm
A gripping device for gripping and fixing a multi-core cable at a desired rotational position .