JP7096014B2 - Braided wire shield member loosening jig - Google Patents

Description

The present invention relates to a jig for loosening a braided wire shield member.

In order to shield and protect a specific area of the electric wire to be arranged, the specific area of the electric wire is covered with a braided wire shield member. The braided wire shield member has a cylindrical shape and is formed by braiding a plurality of copper wires (see Patent Documents 1 and 2). The braided wire shielded member needs to be loosened to ground its ends.

Conventionally, as shown in FIG. 8, the braided wire shield member is loosened by using a tool driver 50 or a rotary brush 51 (a tool sander may be used instead). In the loosening work by the driver 50, the braided wire 1a is loosened by hooking the tip of the driver 50 on the braided wire 1a of the braided wire shield member 1. In the loosening work by the rotary brush 51, the braided wire 1a is loosened by bringing the tip of the rotary brush 51 into contact with the braided wire 1a of the braided wire shield member 1.

JP-A-2017-174548 Japanese Patent No. 5892427

However, unraveling by the driver 50 has a problem that workability is poor and it takes time. Loosening with the rotating brush 51 has a problem that the wire 1a of the braided wire shield member 1 is scratched and cutting chips are generated in some cases.

Therefore, the present invention has been made to solve the above-mentioned problems, and provides a jig for unraveling a braided wire shield member, which can shorten the time for unraveling work and can suppress damage to the wire. With the goal.

The present invention is characterized in that the braided wire shield member is provided with an insertion rod portion inserted from the end opening of the tubular braided wire shield member and a protrusion protruding outward from the outer peripheral surface of the insertion rod portion. It is a loosening jig.

According to the present invention, the time for unraveling work can be shortened, and moreover, damage to the wire can be suppressed.

The first embodiment of this invention is shown, and it is a perspective view of the unraveling jig of a braided wire shield member. The first embodiment of this invention is shown, and it is a perspective view which inserted the unraveling jig into a braided wire shield member. A first embodiment of the present invention is shown, in which (a) is a diagram in which a braided wire shield member covering an electric wire is connected to a ground terminal, and (b) is a diagram in which a braided wire shield member covering the electric wire is connected to a ground electric wire. be. The second embodiment of the present invention is shown, and it is the schematic block diagram of the loosening jig in which the protrusion is located in the retracted position. It is a schematic block diagram of the loosening jig which shows the 2nd Embodiment of this invention, and the protrusion is located at the protruding position. It is a schematic block diagram of the loosening jig which shows the 3rd Embodiment of this invention, and the protrusion is located in the retracted position. It is a schematic block diagram of the loosening jig which shows the 3rd Embodiment of this invention, and the protrusion is located at the protruding position. It is a figure explaining the method of unraveling a conventional braided wire shield member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment)
1 to 3 show the first embodiment of the present invention. The braided wire shield member 1 is formed by braiding a plurality of strands (copper wires) 1a into a tubular shape.

The loosening jig 10A of the braided wire shield member 1 includes an insertion rod portion 11 that can be inserted into the end opening of the tubular braided wire shield member 1, and a plurality of protrusions that protrude outward from the outer peripheral surface of the insertion rod portion 11. A 12 and an insertion restricting protrusion 13 provided on the insertion rod portion 11 are provided.

The outer peripheral surface of the insertion rod portion 11 is a circumferential surface. The insertion rod portion 11 has a spherical insertion tip surface.

The protrusions 12 are provided at a plurality of positions at 180-degree rotation positions in the outer peripheral surface direction of the insertion rod portion 11 and at intervals in the axial direction C at each 180-degree rotation position. Each protrusion 12 is inclined in a direction opposite to the insertion direction (pulling direction) into the braided wire shield member 1 with respect to the direction D orthogonal to the axial direction C of the insertion rod portion 11 (from the tip to the root side). (Inclined in the direction).

The outer peripheral surface of each protrusion 12 is a circumferential surface. The tip of each protrusion 12 is formed to be tapered.

The insertion restricting protrusion 13 is provided so as to be movable in the axial direction C of the insertion rod portion 11. The insertion restricting protrusion 13 is configured so that it cannot move unless a predetermined or higher moving force is applied at each moving position.

Next, the loosening work by the loosening jig 10A will be described. As shown in FIG. 2, the insertion rod portion 11 of the loosening jig 10A is inserted from the end opening of the braided wire shield member 1. Since each protrusion 12 is inclined in a direction that does not enter the mesh of the braided wire shield member 1 with respect to the movement of the loosening jig 10A in the insertion direction, the loosening jig 10A is inside the braided wire shield member 1. It is inserted smoothly. Insertion is performed until the insertion restricting protrusion 13 abuts on the open end of the braided wire shield member 1.

Next, the loosening jig 10A is moved in the direction of being pulled out from the braided wire shield member 1. Then, each protrusion 12 enters the mesh of the braided wire shield member 1, presses the wire 1a in the direction of expanding the mesh of the braided wire 1a, and the braided wire 1a is gradually loosened. Then, at the position where each protrusion 12 completely exits from the end opening of the braided wire shield member 1, the braided wire 1a is completely unwound and the wire 1a at the end of the braided wire shield member 1 is loosened. Will be.

As shown in FIG. 3, the electric wire W is inserted into the braided wire shield member 1, and the braided wire shield member 1 covers the area to be shielded by the electric wire W. Then, a plurality of unraveled strands 1a at the end of the braided wire shield member 1 are focused, and the focused strands 1a are crimped to the ground terminal 30 (see FIG. 3A) or joined to the ground wire W1. (See FIG. 3 (b)).

As described above, the loosening jig 10A includes an insertion rod portion 11 inserted from the end opening of the tubular braided wire shield member 1 and a protrusion 12 protruding outward from the outer peripheral surface of the insertion rod portion 11. It is equipped with. Therefore, since it is sufficient to simply insert the loosening jig 10A into the braided wire shield member 1 and then pull out the loosening jig 10A from the braided wire shield member 1, the time for loosening work can be shortened. Further, since each protrusion 12 enters the mesh of the braided wire shield member 1 and presses the wire 1a to loosen the wire 1a, damage to the wire 1a can be suppressed.

The protrusion 12 projects in a direction inclined in a direction opposite to the insertion direction into the braided wire shield member 1 with respect to the direction D orthogonal to the axial direction C of the insertion rod portion 11. Therefore, since each protrusion 12 does not enter the mesh of the braided wire shield member 1 with respect to the movement of the loosening jig 10A in the insertion direction, the loosening jig 10A is smoothly inserted into the braided wire shield member 1. To.

It has an insertion restricting protrusion 13 that abuts against the end opening of the braided wire shield member 1 and regulates the insertion length of the insertion rod portion 11. Therefore, a constant length (unraveling amount) can be reliably unraveled with respect to the braided wire shield member 1.

The insertion restricting protrusion 13 is provided so as to be movable in the axial direction C of the insertion rod portion 11. Therefore, the loosening length at the end of the braided wire shield member 1 can be adjusted. As a result, the dimensioning accuracy when other electric wires are combined in the wire harness assembled state is improved.

(Second Embodiment)
4 and 5 show a second embodiment of the present invention. The loosening jig 10B of the second embodiment is different from that of the first embodiment, and has a protruding position (see FIG. 5) in which each protrusion 12 protrudes from the outer peripheral surface of the insertion rod portion 11 and an outer circumference of the insertion rod portion 11. It is movably provided between the retracted positions (see FIG. 4) that enter the inside from the surface.

Specifically, the loosening jig 10B includes a moving body 15 movably arranged in the insertion rod portion 11 in the axial direction C, a central rod 16 projecting from the tip of the moving body 15, and a central rod 16. A plurality of branch rods 17 that connect the protrusions 12 to each other, a spring 18 that is a urging means for urging each protrusion 12 to the retracted position side by urging the moving body 15, and each protrusion 12. Has a holding means 20 for holding the spring 18 in a protruding position against the urging force of the spring 18.

The central rod 16 has high rigidity and does not bend even when it receives a reaction force from the protrusion 12. Each branch rod 17 is flexibly formed by a reaction force from each protrusion 12. Each protrusion 12 changes its posture along the advancing / retreating guide groove 11a of the insertion rod portion 11. At the retracted position, the insertion rod portion 11 is in an inclined posture with respect to the orthogonal direction D in the axial direction C, and at the protruding position, the insertion rod portion 11 is in a posture of protruding toward the orthogonal direction D in the axial direction C (FIG. 5). reference).

The holding means 20 is fixed to the outside of the first lock groove 21a and the second lock groove 21b formed in the moving body 15 and the insertion rod portion 11, and is selectively connected to the first lock groove 21a and the second lock groove 21b. It has a lock lever 22 that can be locked. In a state where the lock lever 22 is locked in the first lock groove 21a, the moving body 15 is positioned against the spring force of the spring 18, and each protrusion 12 is held in the retracted position (see FIG. 4). When the lock lever 22 is unlocked from the first lock groove 21a, the moving body 15 is moved by the spring force of the spring 18, and each protrusion 12 is moved to the protruding position. The lock lever 22 is urged by an urging means (not shown) in a direction of being locked to the first lock groove 21a (or the second lock groove 21b). When the pressure of the lock lever 22 is released, the lock lever 22 is locked to the second lock groove 21b, and each protrusion 12 is held at the protruding position (see FIG. 5).

Similar to the first embodiment, the insertion rod portion 11 has an outer peripheral surface as a circumferential surface and an insertion tip surface formed in a spherical shape.

The protrusion 12 is arranged at the same position as the insertion rod portion 11 as in the first embodiment, and is formed to have substantially the same shape.

The insertion restricting protrusion 13 is provided so as to be movable in the axial direction C of the insertion rod portion 11 as in the first embodiment.

Next, the loosening work by the loosening jig 10B will be described. The protrusion 12 of the loosening jig 10B is set to the retracted position (state in FIG. 4), and the insertion rod portion 11 of the loosening jig 10B is inserted from the end opening of the braided wire shield member 1. Since each protrusion 12 is retracted into the insertion rod portion 11, the loosening jig 10B is smoothly inserted into the braided wire shield member 1.

When the insertion restricting protrusion 13 is inserted until it hits the open end of the braided wire shield member 1, the lock lever 22 is pressed. Then, the lock lever 22 is disengaged from the first lock groove 21a, and the protruding portion 12 of the loosening jig 10B is moved to the protruding position by the spring force of the spring 18 (see FIG. 5). Then, each protrusion 12 enters the mesh of the braided wire shield member 1. After that, when the lock lever 22 is released from being pressed, the protrusion 12 moves to the protruding position, and the lock lever 22 is locked in the second lock groove 21b.

Next, the loosening jig 10B is moved in the direction of being pulled out from the braided wire shield member 1. Then, each protrusion 12 that has entered the mesh of the braided wire shield member 1 presses the wire 1a in the direction of expanding the mesh of the braided wire 1a, and the braided wire 1a is gradually loosened. Then, when each protrusion 12 completely escapes from the end opening of the braided wire shield member 1, the mesh of the braided wire 1a is completely unraveled and the wire 1a at the end of the braided wire shield member 1 is loosened. It becomes a state.

Also in the loosening jig 10B of the second embodiment, the time for the loosening work can be shortened and the damage to the wire 1a can be suppressed for the same reason as in the first embodiment.

The protrusion 12 is movably provided between a protruding position protruding from the outer peripheral surface of the insertion rod portion 11 and a retracting position entering the inside from the outer peripheral surface of the insertion rod portion 11. Therefore, by setting each protrusion 12 in the insertion rod portion 11 in the retracted position, the loosening jig 10B can be smoothly inserted into the braided wire shield member 1, which contributes to further shortening of the loosening work time.

It has a spring 18 that is a urging means for urging the protrusion 12 toward the protrusion position, and a holding means 20 that holds the protrusion 12 in the retracted position against the spring force of the spring 18. Therefore, the protrusion 12 located at the retracted position can be easily moved to the protruding position by operating the holding means 20, which contributes to further shortening of the loosening work.

(Third Embodiment)
6 and 7 show a third embodiment of the present invention. In the loosening jig 10C of the third embodiment, as in the second embodiment, the protruding position (see FIG. 7) in which each protrusion 12 protrudes from the outer peripheral surface of the insertion rod portion 11 and the outer peripheral surface of the insertion rod portion 11 It is provided so as to be movable between the retracted positions (see FIG. 6) that enter more inside.

Specifically, the loosening jig 10C includes a moving body 15 movably arranged in the insertion rod portion 11 in the axial direction C, a central rod 16A projecting from the tip of the moving body 15, and the moving body 15. A spring 18 which is a urging means for urging each protrusion 12 to the protrusion position side by urging, an auxiliary spring 19 which is an urging means for urging each protrusion 12 to the retracted position side, and a spring 18. It has a holding means 20 for holding each protrusion 12 in a retracted position against the urging force of the above.

The central rod 16A is formed in a triangular shape that tapers toward the tip. Each protrusion 12 is arranged in each advance / retreat guide groove 11b in the insertion rod portion 11. Auxiliary springs 19 urging each protrusion 12 act on the retracted position side. Each protrusion 12 located at the retracted position is located at a position where the bottom surface thereof is pressed against the inclined surface of the central rod 16A.

The auxiliary spring 19 moves the protrusion 12 to follow the inclined surface of the central rod 16A.

The configuration of the holding means 20 is the same as that of the second embodiment, and the same components in the drawings are designated by the same reference numerals as those of the second embodiment, and the description thereof will be omitted.

Other configurations are the same as those of the first embodiment, and the same components are designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted.

Also in the loosening jig 10C of the third embodiment, the time for the loosening work can be shortened and the damage to the wire 1a can be suppressed for the same reason as in the first embodiment.

The protrusion 12 is movably provided between a protruding position protruding from the outer peripheral surface of the insertion rod portion 11 and a retracting position entering the inside from the outer peripheral surface of the insertion rod portion 11. Therefore, similarly to the second embodiment, the loosening jig 10C can be smoothly inserted into the braided wire shield member 1, which contributes to further shortening of the loosening work.

It has a spring 18 which is a urging means for urging the protrusion 12 to the protrusion position side, and a holding means 20 for holding each protrusion 12 in the exit position against the spring force of the spring 18. Therefore, as in the second embodiment, the protrusion 12 located at the retracted position can be easily moved to the protruding position by the operation of the holding means 20, which contributes to further shortening of the loosening work.

(Modification example)
According to each of the above-described embodiments, the protrusions 12 are provided at a plurality of positions at 180-degree rotation positions in the outer peripheral direction of the insertion rod portion 11 and at each 180-degree position at intervals in the axial direction C. The position other than the 180 position in the outer peripheral direction of the insertion rod portion 11 may be used (for example, 120 degrees or 90 degrees), and the number of protrusions 12 provided in the axial direction C may not be limited. The number of protrusions 12 provided in the axial direction C may be one.

The holding means 20 may be configured so as to be able to hold the protruding portions 12 at the retracted position and the protruding position, respectively.

1 Braided wire shield member 10A to 10C Unraveling jig 11 Insertion rod part 12 Protrusion part 13 Insertion restriction protrusion 20 Holding means

Claims (5)

The insertion rod part inserted from the end opening of the tubular braided wire shield member, and
A jig for loosening a braided wire shield member, which is characterized by having a protrusion protruding outward from the outer peripheral surface of the insertion rod portion. The jig for loosening the braided wire shield member according to claim 1.
The braided wire is characterized in that the protruding portion protrudes in a direction orthogonal to the axial direction of the insertion rod portion in a direction inclined in a direction opposite to the insertion direction into the braided wire shield member. A jig for loosening shield members. The jig for loosening the braided wire shield member according to claim 1 .
The braided wire shield member is characterized in that the protrusion is movably provided between a protruding position protruding from the outer peripheral surface of the insertion rod portion and a retracting position entering the inside from the outer peripheral surface of the insertion rod portion. Unraveling jig. The jig for loosening the braided wire shield member according to any one of claims 1 to 3.
A jig for loosening a braided wire shield member, which has an insertion restricting protrusion that abuts against an end opening of the braided wire shield member and regulates the insertion amount of the insertion rod portion. The jig for loosening the braided wire shield member according to claim 4.
The insertion restricting protrusion is a jig for loosening a braided wire shield member, which is provided so as to be movable in the axial direction of the insertion rod portion.

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