Jig

Abstract

To provide a jig capable of reducing the number of workers required when crimping a terminal onto an electric wire of a multi-core cable.SOLUTION: A jig holds a multi-core cable including a plurality of electric wires and a sheath covering the plurality of electric wires. The jig includes a groove forming surface that is a part of the surface of the jig and is surrounded by sides, a first groove formed in the groove forming surface and holding the multi-core cable, and a plurality of second grooves formed in the groove forming surface, and respectively holding one electric wire. The first groove is formed from a first end on an outer circumferential edge of the groove forming surface to an intermediate portion within the groove forming surface. The plurality of second grooves extend from the intermediate portion in different directions and reach a second end on an outer circumferential edge of the groove forming surface.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a fixture. [Background technology]

[0002] A two-core cable includes two electric wires and a sheath. The two electric wires are twisted together. The sheath covers the two electric wires. Patent Document 1 describes that a terminal is crimped to each of the two electric wires. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] WO2016 / 051489 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, the method for crimping terminals onto the electric wires of a two-core cable has been as follows. The sheath is removed at the end of the two-core cable to expose the two electric wires. Because the two exposed electric wires had been twisted together up until that point, they will have a tendency to be twisted or bent even after being untwisted. The worker uses his fingers to hold the two electric wires apart. While the worker is holding the two electric wires, he crimps a terminal onto each of them.

[0005] As described above, when crimping a terminal to an electric wire, an operator is required to hold the electric wire. In one aspect of the present disclosure, it is preferable to provide a tool that can reduce the number of operators required when crimping a terminal to a multi-core cable. [Means for solving the problem]

[0006] One aspect of the present disclosure is a jig for holding a multi-core cable including a plurality of electric wires and a sheath covering the plurality of electric wires. The jig includes a groove forming surface that is a part of a surface of the jig and is surrounded by a side surface, a first groove formed in the groove forming surface and for holding the multi-core cable, and a plurality of second grooves formed in the groove forming surface and each for holding one of the electric wires. The first groove is formed from a first end on the outer peripheral edge of the groove forming surface to an intermediate portion within the groove forming surface, and the multiple second grooves extend from the intermediate portion in different directions and reach a second end on the outer peripheral edge of the groove forming surface.

[0007] By holding the multi-core cable with a jig according to one aspect of the present disclosure, the multiple electric wires each extend in a fixed direction. Therefore, when crimping terminals to the multiple electric wires, the worker does not need to hold the multiple electric wires with his / her fingers. As a result, the number of workers required to crimp terminals to the multi-core cable can be reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a plan view showing the configuration of a multi-core cable. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] 1 is a plan view showing the configuration of a multi-core cable after the terminals are crimped. FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 5. [Figure 7] 7 is a cross-sectional view showing a cross section VII-VII in FIG. 5. [Figure 8] 11 is a perspective view showing a state in which the jig holds a multi-core cable. FIG. [Figure 9] 11 is a plan view showing a state in which the jig holds a multi-core cable. FIG. [Figure 10]13 is a plan view illustrating a configuration of a modified jig having three second grooves. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Exemplary embodiments of the present disclosure will now be described with reference to the drawings. First Embodiment 1. Structure of multi-core cable 1 The configuration of the multi-core cable 1 will be described with reference to Figs. 1 to 3. As shown in Figs. 1 and 2, the multi-core cable 1 includes two electric wires 3A, 3B and a sheath 5. The electric wires 3A, 3B are twisted together. The sheath 5 covers the electric wires 3A, 3B. The sheath 5 is made of, for example, thermoplastic urethane.

[0010] The two electric wires 3A and 3B are, for example, signal wires for an ABS sensor. As shown in Fig. 2, the electric wires 3A and 3B each include a conductor 7 and an insulating layer 9. The conductor 7 is formed by twisting together a plurality of conductor wires. The plurality of conductor wires constituting the conductor 7 are made of, for example, copper or a copper alloy. The insulating layer 9 covers the outer peripheral surface of the conductor 7. The insulating layer 9 is made of, for example, polyethylene.

[0011] As shown in Fig. 1, the multi-core cable 1 can be divided in the longitudinal direction into a covering portion 11 and a stripped portion 13. The covering portion 11 includes two electric wires 3A, 3B and a sheath 5. The stripped portion 13 includes two electric wires 3A, 3B but does not include a sheath 5. In the stripped portion 13, the sheath 5 has been removed. The stripped portion 13 is located at the terminal of the multi-core cable 1.

[0012] As shown in FIG. 3, terminals 15 are crimped onto the respective ends of two electric wires 3A and 3B in the stripped portion 13 using a jig 21 described later. 2. Configuration of jig 21 The configuration of jig 21 will be described with reference to Fig. 4 to Fig. 7. As shown in Fig. 4 and Fig. 5, jig 21 is basically a rectangular plate having sides parallel to the X1 direction and sides parallel to the Y1 direction in a plan view. The thickness direction of jig 21 is the Z1 direction.

[0013] The X1, Y1, and Z1 directions are perpendicular to each other. The opposite direction to the X1 direction is the X2 direction. The opposite direction to the Y1 direction is the Y2 direction. The opposite direction to the Z1 direction is the Z2 direction. Planar view means viewing from a viewpoint in the Z1 direction. Planar view also means viewing from a direction perpendicular to the groove formation surface 41 described later.

[0014] The jig 21 is divided into a main body portion 25, a first peripheral portion 27, and a second peripheral portion 29. The main body portion 25 is located at the center of the jig 21 in the X1 and X2 directions. The first peripheral portion 27 is located further in the X1 direction than the main body portion 25. The second peripheral portion 29 is located further in the X2 direction than the main body portion 25. As shown in FIG. 4, the main body portion 25 protrudes in the Z1 direction further than the first peripheral portion 27 and the second peripheral portion 29. The main body portion 25 may not be located at the center of the jig 21 in the X1 and X2 directions, but may be located at an end side of the jig 21 in the X1 direction or an end side of the jig 21 in the X2 direction.

[0015] The main body 25, the first peripheral portion 27, and the second peripheral portion 29 are basically rectangular plates having sides parallel to the X1 direction and sides parallel to the Y1 direction in a plan view. The main body 25 protrudes in the Y1 direction further than the first peripheral portion 27 and the second peripheral portion 29.

[0016] The main body 25 has a tapered portion 31 on a side facing the Y1 direction and a side facing the X1 direction. The main body 25 also has a tapered portion 32 on a side facing the Y1 direction and a side facing the X2 direction. The tapered portions 31 and 32 each have a surface that forms an acute angle with the Y1 direction in a plan view.

[0017] By providing the tapered portions 31 and 32, the main body 25 has a tapered shape in which the width in the X1 and X2 directions narrows toward the Y1 direction in plan view. The Y1 direction is the side on which second ends 53A and 53B, which will be described later, are formed. Thus, in plan view, the main body 25 has a tapered shape in which the width in the X1 and X2 directions narrows toward the second ends 53A and 53B.

[0018] The first peripheral portion 27 has a tapered portion 33 on a side facing both the Y1 direction and the X1 direction. The second peripheral portion 29 has a tapered portion 35 on a side facing both the Y1 direction and the X2 direction. The tapered portions 33 and 35 each have a surface that forms an acute angle with the Y1 direction in a plan view.

[0019] By providing the tapered portions 33 and 35, the jig 21 has a tapered shape in which the width in the X1 and X2 directions narrows toward the Y1 direction in plan view. The Y1 direction is the side on which second ends 53A and 53B, which will be described later, are formed. Thus, in plan view, the jig 21 has a tapered shape in which the width in the X1 and X2 directions narrows toward the second ends 53A and 53B.

[0020] The surface of the main body 25 has a groove forming surface 41 and a side surface 43. The groove forming surface 41 is a surface in the Z1 direction. The groove forming surface 41 is a flat surface, and is perpendicular to the Z1 and Z2 directions. The groove forming surface 41 is a main surface of the main body 25 having a plate-like shape. The groove forming surface 41 is surrounded by the side surface 43. The side surface 43 exists over the entire circumference of the main body 25. The side surface 43 is connected to the groove forming surface 41 via a ridge line. The side surface 43 is parallel to the Z1 and Z2 directions. The angle formed by the groove forming surface 41 and the side surface 43 is, for example, a right angle.

[0021] A single first groove 45 is formed in the groove forming surface 41. The first groove 45 is formed continuously from a first end portion 47 to an intermediate portion 49. The first end portion 47 is a portion on the Y2 direction side of the outer circumferential end of the groove forming surface 41. The first end portion 47 is located at the center of the main body portion 25 in the X1 and X2 directions. The intermediate portion 49 is located within the groove forming surface 41. The intermediate portion 49 is at the center of the main body portion 25 in the X1 and X2 directions. The intermediate portion 49 is on the Y1 direction side of the center of the main body portion 25 in the Y1 and Y2 directions. In a plan view, the shape of the first groove 45 is a straight line. The first groove 45 extends parallel to the Y1 and Y2 directions.

[0022] The first groove 45 is a portion recessed in the Z2 direction compared to other portions of the groove formation surface 41. As shown in Fig. 6, in a cross section perpendicular to the longitudinal direction of the first groove 45, the shape of the first groove 45 is a C-shape that is open in the Z1 direction. The width W1 of the opening of the first groove 45 is smaller than the maximum width W2 of the first groove 45.

[0023] The first groove 45 is a portion that holds the covering portion 11 of the multi-core cable 1. The maximum width W2 is set so as to be able to accommodate the covering portion 11. The width W1 is set so as to enable the covering portion 11 to be pushed into the first groove 45 and to prevent the covering portion 11 held in the first groove 45 from easily coming out of the first groove 45.

[0024] Two second grooves 51A, 51B are formed in the groove forming surface 41. The second groove 51A reaches from the intermediate portion 49 to the second end portion 53A. The second groove 51B reaches from the intermediate portion 49 to the second end portion 53B. The second grooves 51A, 51B each communicate with the first groove 45 at the intermediate portion 49.

[0025] The second end 53A is located on the Y1 direction side and the X1 direction side of the outer circumferential end of the groove forming surface 41. The second end 53A is located on the tapered shape portion 31. The second end 53B is located on the Y1 direction side and the X2 direction side of the outer circumferential end of the groove forming surface 41. The second end 53B is located on the tapered shape portion 32. The second ends 53A, 53B are located on the opposite side to the first end 47 in the Y1 and Y2 directions with the intermediate portion 49 as the reference.

[0026] The second groove 51A and the second groove 51B extend in different directions. The shapes of the second grooves 51A and 51B are straight lines. In the intermediate portion 49, the second groove 51A and the second groove 51B overlap. The second groove 51A and the second groove 51B are separated from each other in the Y1 direction. The angle formed by the second groove 51A and the second groove 51B may be an acute angle, a right angle, or an obtuse angle. The angle formed by the second groove 51A and the Y1 direction is, for example, an acute angle. The angle formed by the second groove 51A and the Y1 direction is, for example, equal to the angle formed by the second groove 51B and the Y1 direction.

[0027] Each of the second grooves 51A and 51B is a portion recessed in the Z2 direction compared to other portions of the groove formation surface 41. As shown in Fig. 7, in a cross section perpendicular to the longitudinal direction of the second groove 51A, the shape of the second groove 51A is a C-shape that opens in the Z1 direction. A width W3 at the opening of the second groove 51A is smaller than a maximum width W4 of the second groove 51A. The cross-sectional shape of the second groove 51B is similar to the cross-sectional shape of the second groove 51A.

[0028] The second grooves 51A and 51B are portions that hold one of the electric wire 3A and the electric wire 3B in the strip portion 13. The maximum width W4 is set so as to be able to accommodate the electric wire 3A or the electric wire 3B. The width W3 is set so as to be able to push the electric wire 3A or the electric wire 3B into the second grooves 51A and 51B and to prevent the electric wire 3A or the electric wire 3B held in the second grooves 51A and 51B from easily coming out of the second grooves 51A and 51B.

[0029] It should be noted that the first groove 45 and the second grooves 51A, 51B are formed in the main body portion 25. The first groove 45 and the second grooves 51A, 51B are not formed in the first peripheral portion 27 and the second peripheral portion 29. The main body portion 25 corresponds to the first portion. The first peripheral portion 27 and the second peripheral portion 29 correspond to the second portion.

[0030] 3. How to use jig 21 A method of using the jig 21 will be described with reference to Figs. 8 and 9. As shown in Figs. 8 and 9, the multi-core cable 1 is held by the jig 21. The first groove 45 holds the covering portion 11 of the multi-core cable 1. The covering portion 11 is housed in the first groove 45. The first groove 45 holds the covering portion 11 throughout the entirety from the first end portion 47 to the middle portion 49. The portion of the covering portion 11 on the side of the strip portion 13 is held in the portion of the first groove 45 on the side of the middle portion 49.

[0031] The second grooves 51A and 51B hold the electric wire 3A and the electric wire 3B in the strip portion 13. In the example shown in Figs. 8 and 9, the second groove 51A holds the electric wire 3A, and the second groove 51B holds the electric wire 3B. In the example shown in Figs. 8 and 9, the electric wire 3A is accommodated in the second groove 51A, and the electric wire 3B is accommodated in the second groove 51B. Note that the second groove 51A may hold the electric wire 3B, and the second groove 51B may hold the electric wire 3A.

[0032] The second groove 51A holds the electric wire 3A in the strip portion 13 over the entire area from the intermediate portion 49 to the second end portion 53A. The electric wire 3A extends from the second end portion 53A further outside the jig 21. That is, the tip side of the electric wire 3A in the strip portion 13 is not held by the jig 21. The portion of the electric wire 3A in the strip portion 13 that is not held by the jig 21 extends on an extension line of the second groove 51A. Therefore, the electric wire 3A in the strip portion 13 extends along the longitudinal direction of the second groove 51A over its entire area.

[0033] The second groove 51B holds the electric wire 3B in the strip portion 13 over the entire area from the middle portion 49 to the second end portion 53B. The electric wire 3B extends from the second end portion 53B further outside the jig 21. That is, the tip side of the electric wire 3B in the strip portion 13 is not held by the jig 21. The portion of the electric wire 3B in the strip portion 13 that is not held by the jig 21 extends on an extension line of the second groove 51B. Therefore, the electric wire 3B in the strip portion 13 extends along the longitudinal direction of the second groove 51B over its entire area.

[0034] Next, the insulating layer 9 is removed from the tips of the electric wires 3A and 3B in the stripped portion 13 to expose the conductors 7. The part from which the insulating layer 9 is removed is the part further toward the tip side among the parts not held by the jig 21.

[0035] Next, the jig 21 and the multi-core cable 1 held by the jig 21 are transported to a crimping machine using a robot arm. Around the crimping machine, the direction in which the jig 21 is transported is the Y1 direction. The crimping machine crimps the terminals 15 to the ends of the electric wires 3A and 3B in the strip portion 13. Next, the terminals 15 crimped to the ends of the electric wires 3A and 3B are inserted into a holder.

[0036] 4. Effects of Jig 21 (1A) By holding the multi-core cable 1 with the jig 21, the electric wires 3A and 3B in the stripped portion 13 extend in a constant direction along a substantially straight line. Therefore, if the multi-core cable 1 is held with the jig 21, the worker does not need to hold the electric wires 3A and 3B with his / her fingers when crimping the terminals 15 to the ends of the electric wires 3A and 3B. As a result, the number of workers required to crimp the terminals 15 to the multi-core cable 1 can be reduced.

[0037] (1B) As described in (1A) above, by using the jig 21, the worker does not need to hold the electric wires 3A and 3B with his / her fingers when crimping the terminals 15 to the ends of the electric wires 3A and 3B, so safety is high. In particular, when the strip portion 13 is short, it is difficult for the worker to hold the electric wires 3A and 3B with his / her fingers, so the effectiveness of the jig 21 is even higher. In addition, since the worker does not need to hold the electric wires 3A and 3B with his / her fingers, the quality of the process of crimping the terminals 15 to the ends of the electric wires 3A and 3B is not easily affected by the skill of the worker.

[0038] (1C) By holding the multi-core cable 1 with the jig 21, the electric wires 3A and 3B in the stripped portion 13 extend in a constant direction along a substantially straight line. Therefore, the jig 21 and the multi-core cable 1 held by the jig 21 can be transported to a crimping machine using a robot arm, and the crimping machine can crimp the terminals 15 to the tips of the electric wires 3A and 3B.

[0039] (1D) In ​​plan view, the jig 21 has a tapered shape in which the width in the X1 and X2 directions becomes narrower the further it advances in the Y1 direction (i.e., toward the second ends 53A and 53B). Therefore, for example, when the jig 21 is transported in the Y1 direction, interference between the jig 21 and other members is unlikely to occur.

[0040] (1E) The main body 25 protrudes in the Y1 direction further than the first peripheral portion 27 and the second peripheral portion 29. Therefore, for example, when the jig 21 is transported in the Y1 direction, the first peripheral portion 27 or the second peripheral portion 29 is less likely to interfere with other members.

[0041] (1F) In plan view, main body 25 has a tapered shape in which the width in the X1 and X2 directions becomes narrower the further it advances in the Y1 direction (i.e., toward second ends 53A and 53B). Therefore, for example, when jig 21 is transported in the Y1 direction, main body 25 is less likely to interfere with other members.

[0042] (1G) In a cross section perpendicular to the longitudinal direction of the first groove 45, the shape of the first groove 45 is a C-shape that is open in the Z1 direction. Therefore, the covering 11 held in the first groove 45 is unlikely to come off from the first groove 45. In a cross section perpendicular to the longitudinal direction of the second grooves 51A, 51B, the shape of the second grooves 51A, 51B is a C-shape that is open in the Z1 direction. Therefore, the electric wires 3A, 3B held in the second grooves 51A, 51B are unlikely to come off from the second grooves 51A, 51B. <Other embodiments> Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented in various modified forms.

[0043] (1) The multi-core cable 1 may include three or more electric wires. The jig 21 may include three or more second grooves. Fig. 10 shows the jig 21 including three second grooves 51A, 51B, and 51C. The second grooves 51A, 51B, and 51C extend in different directions from the middle portion 49. The second grooves 51A, 51B, and 51C are each shaped like a straight line. In the middle portion 49, the second grooves 51A, 51B, and 51C overlap. As it goes in the Y1 direction, the second groove 51A and the second groove 51B are spaced apart, and the second groove 51B and the second groove 51C are spaced apart.

[0044] (2) The jig 21 does not have to have a tapered shape. (3) The jig 21 may be composed of only the main body 25. (4) The main body portion 25 does not have to protrude in the Y1 direction compared to the first peripheral portion 27 and the second peripheral portion 29. (5) In the first embodiment, the shape of the surface of the main body 25 at the Y1-direction end in a plan view was a polygon (trapezoid) with each of the tapered portions 31 and 32 and the side surface 43 being one side. Alternatively, the shape of the surface of the main body 25 at the Y1-direction end may be an arc shape centered on the intermediate portion 49. This increases the degree of freedom in the drawing direction of the electric wires 3A and 3B.

[0045] (6) The function of one component in each of the above embodiments may be shared by multiple components, or the functions of multiple components may be performed by one component. Also, part of the configuration of each of the above embodiments may be omitted. Also, at least part of the configuration of each of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0046] (7) In addition to the jig 21 described above, the present disclosure can be realized in various forms, such as a manufacturing method for the jig 21. [Technical idea disclosed in this specification] [Item 1] A jig for holding a multi-core cable including a plurality of electric wires and a sheath covering the plurality of electric wires, A groove forming surface that is a part of the surface of the jig and is surrounded by a side surface; a first groove formed in the groove forming surface and holding the multi-core cable; a plurality of second grooves formed in the groove forming surface, each of which holds one of the electric wires; Equipped with The first groove is formed from a first end on an outer peripheral edge of the groove forming surface to an intermediate portion within the groove forming surface, The second grooves extend in different directions from the intermediate portion and reach a second end portion on an outer circumferential edge of the groove formation surface. jig. [Item 2] The jig according to item 1, When viewed from a direction perpendicular to the groove formation surface, the jig has a tapered shape that narrows toward the second end. jig. [Item 3] The jig according to item 1 or 2, the jig includes a first portion in which the first groove and the second groove are formed, and a second portion in which the first groove and the second groove are not formed, The first portion protrudes further toward the second end than the second portion. jig. [Item 4] Item 3. The jig according to item 3, When viewed from a direction perpendicular to the groove formation surface, the first portion has a tapered shape that narrows toward the second end portion. jig.

[0047] [Item 5] A tool according to any one of items 1 to 4, When viewed in a cross section perpendicular to the longitudinal direction of the groove, the first groove and the second groove have a C-shape. jig. [Explanation of symbols]

[0048] 1...multi-core cable, 3A, 3B...electric wire, 5...sheath, 7...conductor, 9...insulating layer, 11...covering portion, 13...strip portion, 15...terminal, 21...jig, 25...main body portion, 27...first peripheral portion, 29...second peripheral portion, 31, 32, 33, 35...tapered portion, 41...groove forming surface, 43...side surface, 45...first groove, 47...first end portion, 49...middle portion, 51A, 51B, 51C...second groove, 53A, 53B...second end portion

Claims

1. A jig for holding a multi-core cable including a plurality of electric wires and a sheath covering the plurality of electric wires, A groove forming surface that is a part of the surface of the jig and is surrounded by a side surface; a first groove formed in the groove forming surface for holding the multi-core cable; a plurality of second grooves formed in the groove forming surface, each of the second grooves holding one of the electric wires; Equipped with The first groove is formed from a first end on an outer peripheral edge of the groove forming surface to an intermediate portion within the groove forming surface, The second grooves extend in different directions from the intermediate portion and reach a second end portion on an outer circumferential edge of the groove forming surface. jig.

2. The jig according to claim 1, When viewed from a direction perpendicular to the groove formation surface, the jig has a tapered shape that narrows toward the second end. jig.

3. The jig according to claim 1 or 2, the jig includes a first portion in which the first groove and the second groove are formed, and a second portion in which the first groove and the second groove are not formed, The first portion protrudes further toward the second end than the second portion. jig.

4. The jig according to claim 3, When viewed from a direction perpendicular to the groove formation surface, the first portion has a tapered shape that narrows toward the second end portion. jig.

5. The jig according to claim 1 or 2, When viewed in a cross section perpendicular to the longitudinal direction of the groove, the first groove and the second groove have a C-shape. jig.

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