Wire insertion tool and wire insertion method

Abstract

To improve workability.SOLUTION: An electric wire insertion jig 1 includes a rod-like portion 11, an abutment portion 12, and an insertion space portion S1. The rod-like portion 11 is formed into a rod shape in an axial direction X and can be inserted into an elastic cylindrical member 2 formed into a cylindrical shape by knitting fibers. The abutment portion 12 is provided at an end portion 111 on one side in the axial direction X of the rod-like portion 11 and capable of abutting an end portion 21 on one side in the axial direction X of the cylindrical member 2. The insertion space portion 1S is formed in the axial direction X across the rod-like portion 11 and the abutment portion 12, and can insert an electric wire W in the axial direction X. In a state in which the end portion 21 on one side in the axial direction X of the cylindrical member 2 is abutted, the abutment portion 12 is capable of expanding the end portion 21 on one side in the axial direction X of the cylindrical member 2 by receiving abutment reaction force.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an electric wire insertion tool and an electric wire insertion method. [Background technology]

[0002] Among conventional electric wire insertion jigs, there is one that inserts electric wires into the inside of a corrugated tube. The electric wire insertion jig is formed in a cylindrical shape, and the outer diameter of the electric wire insertion jig is smaller than the inner diameter of the corrugated tube. The electric wire insertion jig also has a slit that is wider than the diameter of each electric wire to be inserted into the corrugated tube, and the slit extends over the entire axial length of the electric wire insertion jig.

[0003] Then, the worker first inserts a plurality of electric wires into the electric wire insertion jig through the above-mentioned slit. Next, the worker inserts the electric wires from the rear end opening of the corrugated tube without causing the terminals at the ends of the electric wires to protrude from the front end opening of the jig, and stops inserting the electric wire insertion jig into the corrugated tube when the front end of the jig is positioned at the front end opening of the corrugated tube. Then, the worker pulls out and holds the electric wires inside the jig, and in this state pulls out the jig from the rear end opening or the front end opening of the corrugated tube, and removes the jig from the electric wires while leaving the electric wires inside the corrugated tube (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-341676 A Summary of the Invention [Problem to be solved by the invention]

[0005] For example, in a wire harness to be mounted on a vehicle, a tubular member formed by weaving fibers into a tubular shape may be attached to the electric wire. The tubular member has elasticity different from that of a corrugated tube. Due to this difference, when inserting the electric wire into the inside of the tubular member formed by weaving fibers into a tubular shape and having elasticity, the above-mentioned jig has room for further improvement in terms of workability.

[0006] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, an object of the present invention is to provide an electric wire insertion tool and an electric wire insertion method that can improve workability. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the electric wire insertion jig of the present invention comprises a rod-shaped portion formed in a rod-like shape along an axial direction and capable of being inserted into the inside of a tubular member having elasticity formed into a tube shape by weaving fibers, an abutment portion provided at one axial end of the rod-shaped portion and capable of being abutted against one axial end of the tubular member, and an insertion space portion formed along the axial direction across the rod-shaped portion and the abutment portion and capable of inserting an electric wire along the axial direction, wherein the abutment portion is capable of expanding the diameter of one axial end of the tubular member by receiving an abutment reaction force when the abutment portion is abutted against the one axial end of the tubular member.

[0008] In order to solve the above-mentioned problems, an electric wire insertion method according to the present invention provides an electric wire insertion jig including a rod-shaped portion formed in a rod shape along an axial direction, an abutment portion provided at one end of the rod-shaped portion in the axial direction, and an insertion space portion formed along the axial direction across the rod-shaped portion and the abutment portion, the method comprising the steps of: inserting an electric wire along the axial direction into the insertion space portion; inserting the rod-shaped portion together with the electric wire into an interior of a tubular member having elasticity and formed into a tubular shape by weaving fibers; The method includes the steps of: abutting one end of the tubular member in the axial direction against the abutment portion, thereby receiving an abutment reaction force from the abutment portion and expanding the one end of the tubular member in the axial direction; moving the wire insertion jig and the tubular member along the axial direction relative to the electric wire in a state in which the tubular member is expanded in a direction perpendicular to the axial direction to attach the tubular member to the electric wire; and removing the wire insertion jig from the tubular member and the electric wire. Effect of the Invention

[0009] The electric wire insertion jig and the electric wire insertion method according to the present invention can improve workability. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an electric wire insertion jig according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing a state in which an electric wire is inserted into an insertion space of the electric wire insertion jig according to the first embodiment. [Diagram 3] FIG. 3 is a perspective view showing a state in which one end in the axial direction of the cylindrical member is abutted against an abutment portion of the electric wire insertion jig according to the first embodiment. [Figure 4] FIG. 4 is a perspective view showing a state in which the electric wire insertion jig according to the first embodiment has been moved to one side in the axial direction relative to the electric wire and the tubular member. [Diagram 5] FIG. 5 is a perspective view of the electric wire insertion jig according to the second embodiment, in which the electric wire insertion jig is partially cut away. [Figure 6]FIG. 6 is a perspective view showing a state in which an electric wire is inserted into an insertion space of an electric wire insertion jig according to a second embodiment, with a part of the electric wire insertion jig cut away. [Figure 7] FIG. 7 is a perspective view showing a state in which one axial end of a cylindrical member is abutted against an abutment portion of an electric wire insertion jig according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The electric wire insertion tool 1 and the electric wire insertion method according to the present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to the following embodiments. Also, the components in the following embodiments include those that a person skilled in the art can easily imagine or that are substantially the same.

[0012] [First embodiment] 1 is a perspective view of an electric wire insertion jig 1 according to a first embodiment. In the electric wire insertion jig 1 according to this embodiment, X denotes an axial direction X along an axis XL.

[0013] The electric wire insertion jig 1 of this embodiment is a jig for inserting one electric wire W into a tubular member 2 and attaching the tubular member 2 to the electric wire W (see Figure 4), for example, in the assembly process of a wire harness to be mounted on a vehicle.

[0014] Here, the electric wire W shown in Fig. 4 is composed of a conductor part Wa having electrical conductivity and a covering part Wb that covers the conductor part Wa and has insulating properties. The conductor part Wa is formed of a twisted wire made of, for example, copper or aluminum. The covering part Wb is formed, for example, by extrusion molding a synthetic resin material. The electric wire W has a diameter Wr (in a direction perpendicular to the axial direction X).

[0015] The tubular member 2 shown in FIG. 4 is formed into a tubular shape by knitting, for example, synthetic fibers. In other words, the tubular member 2 is a so-called tubular knitted member. The tubular member 2 is stretchable. In a non-stretchable state, the tubular member 2 has a diameter of 2r in a direction perpendicular to the axial direction X (see FIG. 3). The synthetic fiber according to this embodiment is, for example, aramid fiber. Aramid fiber has insulating properties. By covering the electric wire W with the tubular member 2 formed of aramid fiber, for example, when a vehicle collides with some object and is damaged, the electric wire W can maintain its insulating properties due to the aramid fiber.

[0016] 1 in this embodiment includes, for example, a rod-shaped portion 11, an abutment portion 12, a cover portion 13, a grip portion 14, and an insertion space portion S1. The rod-shaped portion 11, the abutment portion 12, the cover portion 13, the grip portion 14, and the insertion space portion S1 are integrally formed in the rod-shaped portion 11, the abutment portion 12, the cover portion 13, the grip portion 14, and the insertion space portion S1. In the rod-shaped portion 11, the abutment portion 12, and the grip portion 14, the rod-shaped portion 11, the abutment portion 12, and the grip portion 14 are arranged in this order in the axial direction X.

[0017] The rod-shaped portion 11 is formed in a rod shape along the axial direction X. The rod-shaped portion 11 is formed in, for example, a semi-cylindrical shape, and has a rod-shaped inner peripheral surface 11f1 and a rod-shaped outer peripheral surface 11f2. The rod-shaped inner peripheral surface 11f1 is the axis XL side peripheral surface of the rod-shaped portion 11. The rod-shaped outer peripheral surface 11f2 is the peripheral surface of the rod-shaped portion 11 on the opposite side to the axis XL. The rod-shaped portion 11 has a base end portion 111 on one side of the axial direction X, and a tip end portion 112 on the other side of the axial direction X. The rod-shaped portion 11 having these configurations can be inserted into the inside of a tubular member 2 having elasticity and formed into a tubular shape by weaving fibers. Next, the abutting portion 12 will be described.

[0018] The abutting portion 12 is provided at a base end (end) 111 on one side of the rod-shaped portion 11 in the axial direction X. The abutting portion 12 is formed, for example, in a semicircular ring shape, and has an abutting surface 12f1, a non-abutting surface 12f2, an abutting portion inner peripheral surface 12f3, and an abutting portion outer peripheral surface 12f4. The abutting surface 12f1 is adjacent to the rod-shaped portion 11 in the axial direction X, is located on the other side of the abutting portion 12 in the axial direction X, and is a surface against which the end 21 (see FIG. 3) on one side of the axial direction X of the cylindrical member 2 is abutted. The non-abutting surface 12f2 is adjacent to the grip portion 14 in the axial direction X, is located on one side of the abutting portion 12 in the axial direction X, and is located opposite to the abutting surface 12f1 in the axial direction X. The abutting portion inner peripheral surface 12f3 is the axis XL side peripheral surface of the abutting portion 12. The abutting portion outer peripheral surface 12f4 is the peripheral surface of the abutting portion 12 on the opposite side to the axis XL. The abutting portion 12 having this configuration is capable of abutting the end portion 21 on one side in the axial direction X of the cylindrical member 2. Furthermore, when the end portion 21 on one side in the axial direction X of the cylindrical member 2 is abutted against the abutting portion 12, the abutting portion 12 is capable of expanding the diameter of the end portion 21 on one side in the axial direction X of the cylindrical member 2 by receiving an abutment reaction force. Next, the cover portion 13 will be described.

[0019] The cover portion 13 is formed to protrude from the abutment portion 12 toward the side where the rod-shaped portion 11 is provided in the axial direction X, and is positioned at a distance from the rod-shaped portion 11 in the orthogonal direction perpendicular to the axial direction X. The cover portion 13 having this configuration covers the end portion 21 on one side in the axial direction X of the cylindrical member 2 in a state where the end portion 21 is abutted against the abutment portion 12 and expanded in diameter (see FIG. 3). The cover portion 13 shown in FIG. 1 is formed, for example, in a semicylindrical shape, and has a cover portion inner peripheral surface 13f1 and a cover portion outer peripheral surface 13f2. The cover portion inner peripheral surface 13f1 is the axis XL side peripheral surface of the cover portion 13. The cover portion outer peripheral surface 13f2 is the peripheral surface of the cover portion 13 on the opposite side to the axis XL. The cover portion outer peripheral surface 13f2 and the abutment portion outer peripheral surface 12f4 form the same peripheral surface. Next, the grip portion 14 will be described.

[0020] The gripping portion 14 is provided on the opposite side of the rod-shaped portion 11 across the abutting portion 12 in the axial direction X, and the length in the orthogonal direction perpendicular to the axial direction X is longer than the length of the rod-shaped portion 11 in the orthogonal direction. The gripping portion 14 is a portion that is gripped by an operator in the operation of attaching the tubular member 2 to an electric wire, which will be described later. The gripping portion 14 is formed, for example, in a semi-cylindrical shape and has a gripping portion inner peripheral surface 14f1 and a gripping portion outer peripheral surface 14f2. The gripping portion inner peripheral surface 14f1 is the axis XL side peripheral surface of the gripping portion 14. The gripping portion outer peripheral surface 14f2 is the peripheral surface of the gripping portion 14 on the opposite side to the axis XL. Next, the insertion space portion S1 will be described.

[0021] The insertion space S1 is formed in the axial direction X across the rod-shaped portion 11, the abutting portion 12, and the gripping portion 14, and the electric wire W can be inserted in the axial direction X. The insertion space S1 is formed as a semi-cylindrical space by the rod-shaped portion inner peripheral surface 11f1, the abutting portion inner peripheral surface 12f3, and the gripping portion inner peripheral surface 14f1. More specifically, the insertion space S1 is formed in the axial direction X from one end of the gripping portion 14 in the axial direction X to the other end (the tip end 112) of the rod-shaped portion 11 in the axial direction X. In other words, the insertion space S1 is formed over the entire length of the electric wire insertion jig 1 in the axial direction X. When viewed from the axial direction X, the insertion space S1 has a radius S1r from the axis XL to the inner peripheral surfaces 11f1, 12f3, and 14f1. The radius S1r is approximately half the diameter Wr of the electric wire W (see FIG. 4).

[0022] The insertion space S1 shown in Fig. 1 has a pair of opposing openings S11, S12 opposing each other in the axial direction X. One of the pair of opposing openings S11, S12, S11, is located on one side in the axial direction X and opens toward one side in the axial direction X. The other of the pair of opposing openings S11, S12, S12, is located on the other side in the axial direction X and opens toward the other side in the axial direction X. In addition, the insertion space S1 opens toward a direction perpendicular to the axial direction X and is formed from an end of the grip portion 14 on one side in the axial direction X to an end (tip-side end 112) of the rod-shaped portion 11 on the other side in the axial direction X. In other words, the insertion space S1 has an electric wire removal opening (opening) S13 that opens in a direction perpendicular to the axial direction X and extends over the entire length of the insertion space S1 in the axial direction X. The electric wire removal opening S13 has the same width at one end in the axial direction X as at the other end in the axial direction X, and is formed with the same width over the entire length of the insertion space S1. That is, the electric wire removal opening S13 is formed in a rectangular shape when viewed from a direction perpendicular to the axial direction X. The width of the electric wire removal opening S13 in the direction perpendicular to the axial direction X is slightly larger than the diameter of the electric wire W.

[0023] Moreover, the electric wire insertion jig 1 according to the embodiment has a tubular member insertion space S2. The tubular member insertion space S2 is located between the rod-shaped portion 11 and the abutting portion 12 in a direction perpendicular to the axial direction X. The tubular member insertion space S2 having the above-mentioned configuration allows the end portion 21 of the tubular member 2 on one side in the axial direction X to be inserted therein.

[0024] Next, a procedure for mounting the tubular member 2 to the electric wire W using the electric wire insertion jig 1 having the above-mentioned configuration will be described with reference to Figs. 2 to 4. Fig. 2 is a perspective view showing a state in which the electric wire W is inserted into the insertion space 1S of the electric wire insertion jig 1 according to the first embodiment. Fig. 3 is a perspective view showing a state in which one end 21 in the axial direction X of the tubular member 2 is abutted against the abutting portion 12 of the electric wire insertion jig 1 according to the first embodiment. Fig. 4 is a perspective view showing a state in which the electric wire insertion jig 1 according to the first embodiment has been moved to one side in the axial direction X with respect to the electric wire W and the tubular member 2.

[0025] First, the worker inserts the electric wire W along the axial direction X into the insertion space S1 formed in the axial direction X across the rod-shaped portion 11, the abutting portion 12, and the gripping portion 14, for example, through the electric wire removal opening S13, as shown in FIG. 2. When the electric wire W is inserted into the insertion space S1, one half of the electric wire W in the orthogonal direction perpendicular to the axial direction X is accommodated in the insertion space S1 and is covered by the rod-shaped portion 11, the abutting portion 12, and the gripping portion 14. When the electric wire W is inserted into the insertion space S1, the other half of the electric wire W in the orthogonal direction perpendicular to the axial direction X is exposed to the outside. In addition, the other end of the electric wire W in the axial direction X is covered by the rod-shaped portion 11.

[0026] Next, the worker inserts the rod-shaped portion 11 together with the electric wire W into the inside of the elastic tubular member 2 formed into a tube by weaving fibers. More specifically, the worker inserts the rod-shaped portion 11 together with the electric wire W into the inside of the tubular member 2 from the tip end portion 112.

[0027] 3, the worker abuts one end 21 of the tubular member 2 in the axial direction X against the abutment portion 12, thereby receiving a counterforce from the abutment portion 12 and expanding the diameter of the one end 21 of the tubular member 2 in the axial direction X. In other words, the diameter of the one end 21 of the tubular member 2 abutting against the abutment portion 12 in the orthogonal direction becomes larger than the diameter 2r in the orthogonal direction in the non-expanded state.

[0028] Next, in a state in which the diameter of the tubular member 2 is expanded in a direction perpendicular to the axial direction X, the worker moves the wire insertion jig 1 and the tubular member 2 along the axial direction X relative to the electric wire W, so as to cover the outer peripheral surface of the electric wire W with the tubular member 2.

[0029] Next, the worker moves the electric wire insertion jig 1 to one side in the axial direction X relative to the cylindrical member 2 and the electric wire W, so that the end 21 of the cylindrical member 2 inserted in the cylindrical member insertion space S2 is exposed to the outside and the electric wire insertion jig 1 and the cylindrical member 2 are brought into a non-contact state, as shown in Fig. 4. The cylindrical member 2 is reduced in diameter when it is brought into a non-contact state with the abutment portion 12 of the electric wire insertion jig 1. Then, when the electric wire insertion jig 1 and the cylindrical member 2 are brought into a non-contact state, the outer peripheral surface of the electric wire W comes into contact with the inner peripheral surface of the cylindrical member 2, and the cylindrical member 2 is attached to the electric wire W.

[0030] Finally, the worker moves the electric wire insertion jig 1 relative to the electric wire W and the cylindrical member 2 in the direction perpendicular to the axial direction X (the direction of the arrow A shown in FIG. 4 ) in the middle of the extending direction of the electric wire W. Then, the worker removes the electric wire W from the insertion space S1 through the electric wire removal opening (opening) S13 that opens in the perpendicular direction perpendicular to the axial direction X. Then, the inner peripheral surfaces 11f1, 12f3, and 14f1 of the electric wire insertion jig 1 are separated from the outer peripheral surface of the electric wire W, and the electric wire W and the electric wire insertion jig 1 are in a non-contact state. That is, the worker removes the electric wire insertion jig 1 from the cylindrical member 2 and the electric wire W. Then, the worker finishes the attachment work of the cylindrical member 2 to the electric wire W.

[0031] As described above, in the electric wire insertion jig 1 and the electric wire insertion method according to the present embodiment, the abutting portion 12 can receive an abutting reaction force to expand the diameter of the end portion 21 on one side in the axial direction X of the cylindrical member 2 in a state where the abutting portion 12 is abutted against the end portion 21 on one side in the axial direction X of the cylindrical member 2. Therefore, the electric wire insertion jig 1 etc. according to the embodiment can move the cylindrical member 2 to the other side in the axial direction X with respect to the electric wire W in a state where the end portion 21 on one side in the axial direction X of the cylindrical member 2 is expanded in diameter, and can insert the electric wire W into the inside of the cylindrical member 2. As a result, the electric wire insertion jig 1 etc. according to the embodiment can insert the electric wire W into the inside of the cylindrical member 2 along the axial direction X in a state where the cylindrical member 2 is expanded in diameter, even if there is only a small difference between the diameter 2r of the cylindrical member 2 in the orthogonal direction in a non-expanded state and the diameter Wr of the electric wire W in the orthogonal direction. Therefore, the electric wire insertion jig 1 according to the embodiment can improve the efficiency of inserting the electric wire W into the cylindrical member 2.

[0032] Moreover, the electric wire insertion jig 1 according to this embodiment includes an insertion space S1 having an electric wire removal opening (opening) S13 that opens in a direction perpendicular to the axial direction X. Therefore, the electric wire insertion jig 1 according to this embodiment can be removed from the electric wire W at a position halfway in the axial direction X of the electric wire W. As a result, the electric wire insertion jig 1 according to this embodiment does not need to be removed by moving the electric wire insertion jig to either one end in the axial direction X of the electric wire W, as in the case of an electric wire insertion jig having a cylindrical rod-shaped portion 11. Therefore, the electric wire insertion jig 1 according to this embodiment can improve the workability during removal.

[0033] Furthermore, the electric wire insertion jig 1 according to the embodiment includes a cover portion 13 that covers the expanded end portion 21 when the end portion 21 on one side in the axial direction X of the tubular member 2 abuts against the abutting portion 12 and is expanded in diameter. Therefore, when the tubular member 2 is attached to the electric wire W to be inserted inside the tubular member 2 and objects such as other devices and components are arranged around the electric wire W, the electric wire insertion jig 1 according to the embodiment can prevent other objects from coming into contact with the end portion 21 of the tubular member 2. As a result, the electric wire insertion jig 1 according to the embodiment can prevent fraying of the fibers at the end portion 21 of the tubular member 2.

[0034] Moreover, the electric wire insertion jig 1 according to the present embodiment includes a gripping portion 14 that is provided on the opposite side of the rod-shaped portion 11 with respect to the abutting portion 12 in the axial direction X, and has a length in an orthogonal direction perpendicular to the axial direction X that is longer than the length of the rod-shaped portion 11 in the orthogonal direction. Therefore, the electric wire insertion jig 1 according to the embodiment allows an operator to attach the tubular member 2 to the electric wire W while holding the gripping portion 14. As a result, the electric wire insertion jig 1 according to the embodiment can further improve the workability when attaching the tubular member 2 to the electric wire W. Moreover, since the orthogonal length of the rod-shaped portion 11 and the orthogonal length of the gripping portion 14 are different, an operator can distinguish the gripping portion 14 at a glance.

[0035] The electric wire insertion jig 1 according to the above embodiment has been described as including the rod-shaped portion 11, the abutting portion 12, the cover portion 13, and the gripping portion 14. However, the electric wire insertion jig 1 according to the present embodiment is not limited to this. For example, the electric wire insertion jig 1 does not necessarily have to be provided with the gripping portion 14. When the electric wire insertion jig 1 does not have the gripping portion 14, the insertion space portion S1 is formed across the rod-shaped portion 11 and the abutting portion along the axial direction X.

[0036] In the above embodiment, the electric wire insertion jig 1 has been described as including the semicylindrical rod portion 11, the cover portion 13, the grip portion 14, and the semicircular plate-shaped abutment portion 12. However, the electric wire insertion jig according to the present embodiment is not limited to this, and the shapes of the rod portion 11, the abutment portion 12, the cover portion 13, and the grip portion 14 can be changed as appropriate.

[0037] [Second embodiment] 5 is a perspective view of an electric wire insertion jig 1A according to a second embodiment, with a part of the electric wire insertion jig 1A cut away. The electric wire insertion jig 1 according to the first embodiment described above includes a rod-shaped portion 11, an abutting portion 12, a cover portion 13, and a gripping portion 14, whereas the electric wire insertion jig 1A according to the second embodiment differs in that it does not include the cover portion 13 and the gripping portion 14. Below, the electric wire insertion jig 1A according to the second embodiment will be described in terms of differences from the electric wire insertion jig 1 according to the first embodiment, and a description of the same configuration will be omitted.

[0038] The electric wire insertion jig 1A in this embodiment includes, for example, a rod-shaped portion 11A, an abutting portion 12A, and an insertion space portion S1A.

[0039] The rod-shaped portion 11A is formed in a rod shape along the axial direction X. The rod-shaped portion 11A is formed, for example, in a cylindrical shape, and has a rod-shaped portion inner circumferential surface 11f1A and a rod-shaped portion outer circumferential surface 11f2A. The rod-shaped portion 11A has a base end portion 111A on one side in the axial direction X, and a tip end portion 112A on the other side in the axial direction X. The tip end portion 112A is formed in a tapered shape.

[0040] The abutment portion 12A is provided at a base end (end) 111A on one side of the rod-shaped portion 11A in the axial direction X. The abutment portion 12A is formed, for example, in a disk shape, and has an abutment surface 12f1A, a non-abutment surface 12f2A, an abutment portion inner circumferential surface 12f3A, and an abutment portion outer circumferential surface 12f4A.

[0041] The insertion space S1A is formed between the rod-shaped portion 11A and the abutting portion 12A along the axial direction X, and the electric wire W can be inserted along the axial direction X. The insertion space S1A is formed as a cylindrical space by the rod-shaped portion inner peripheral surface 11f1A and the abutting portion inner peripheral surface 12f3A. When viewed from the axial direction X, the insertion space S1 has a radius S1rA from the axis XL to the inner peripheral surfaces 11f1A and 12f3A. The radius S1rA is approximately 1 / 2 the diameter Wr of the electric wire W (see FIG. 6).

[0042] Next, a procedure for mounting the tubular member 2 to the electric wire W using the electric wire insertion jig 1A having the above-mentioned configuration will be described with reference to Fig. 6 and Fig. 7. Fig. 6 is a perspective view showing a state in which the electric wire W is inserted into the insertion space portion S1A of the electric wire insertion jig 1A according to the second embodiment and a state in which the electric wire insertion jig 1A is partially broken away. Fig. 7 is a perspective view showing a state in which one end of the tubular member 2 in the axial direction X is abutted against the abutment portion 12A of the electric wire insertion jig 1A according to the second embodiment.

[0043] First, an operator inserts the electric wire W into the insertion space S1A formed along the axial direction X across the rod-shaped portion 11A and the abutting portion 12A, for example, through the openings S11, S12 located on either side of the axial direction X in the insertion space S1A, as shown in FIG. 6.

[0044] Next, the worker inserts the rod-shaped portion 11A together with the electric wire W into the inside of the elastic tubular member 2 which is formed into a tubular shape by weaving fibers.

[0045] Next, as shown in FIG. 7, the worker abuts one end portion 21 of the tubular member 2 in the axial direction X against the abutment portion 12A, and receives a counterforce from the abutment portion 12A to expand the diameter of the one end portion 21 of the tubular member 2 in the axial direction X.

[0046] Next, with the tubular member 2 expanded in a direction perpendicular to the axial direction X, the worker moves the wire insertion jig 1A and the tubular member 2 along the axial direction X relative to the electric wire W to attach the tubular member 2 to the electric wire W.

[0047] Finally, the worker moves the electric wire insertion jig 1A in the axial direction X relative to the electric wire W and the cylindrical member 2, and removes the electric wire W from the insertion space S1A through the openings S11, S12 located on either side of the insertion space S1A in the axial direction X, thereby bringing the electric wire W and the electric wire insertion jig 1A into a non-contact state. In other words, the worker removes the electric wire insertion jig 1A from the cylindrical member 2 and the electric wire W.

[0048] As described above, the electric wire insertion jig 1A according to this embodiment is composed of the rod-shaped portion 11A, the abutting portion 12A, and the insertion space portion S1A. Therefore, the electric wire insertion jig 1A has a simple structure and can be easily produced.

[0049] In the above embodiment, the electric wire insertion jig 1A has been described as including a semicylindrical rod portion 11A and a semicircular plate-shaped abutment portion 12A. However, the electric wire insertion jig 1A according to the present embodiment is not limited to this, and the shapes of the rod portion 11A and the abutment portion 12A can be changed as appropriate.

[0050] The electric wire insertion jig 1, 1A and the electric wire insertion method according to the above embodiment have been described as inserting the electric wire W into the insertion space S1, S1A, and then inserting the rod-shaped portions 11, 11A together with the electric wire W into the inside of the cylindrical member 2. However, the electric wire insertion jig 1, 1A and the electric wire insertion method according to the present embodiment are not limited thereto. For example, the electric wire insertion jig 1, 1A and the electric wire insertion method may insert the rod-shaped portions 11, 11A into the inside of the cylindrical member 2, and then insert the electric wire W into the insertion space S1, S1A.

[0051] Furthermore, the cylindrical member 2 according to the above embodiment has been described as being reduced in diameter when it is not in contact with the abutting portion 12 of the electric wire insertion jig 1. However, the cylindrical member 2 according to the present embodiment is not limited to this. The cylindrical member 2 does not have to be able to reduce in diameter by its own contraction force even when the electric wire insertion jig 1 and the cylindrical member 2 are not in contact with each other. The cylindrical member 2 is reduced in diameter by an operator, for example, after the cylindrical member 2 is attached to the electric wire W.

[0052] The present invention is not limited to the above-described embodiments. The present invention also includes configurations obtained by appropriately combining the configurations described in the first embodiment and the configurations described in the second embodiment. [Explanation of symbols]

[0053] 1, 1A Wire insertion tool 11, 11A Rod-shaped part 12, 12A abutment part 13 Cover part 14 Gripping part 2. Cylindrical member S1, S1A Insertion space S13 Wire removal opening (opening) W electric wire

Claims

1. A rod-shaped portion that is formed in a rod shape along an axial direction and can be inserted into an elastic tubular member that is formed in a tubular shape by weaving fibers; an abutment portion provided at one end of the rod-shaped portion in the axial direction and capable of abutting against the one end of the cylindrical member in the axial direction; an insertion space portion that is formed across the rod-shaped portion and the abutting portion along the axial direction and through which an electric wire can be inserted along the axial direction; Equipped with the abutting portion is capable of expanding a diameter of the end portion on one side in the axial direction of the cylindrical member by receiving an abutting reaction force in a state in which the end portion is abutted against the abutting portion, A wire insertion jig characterized by the above.

2. The insertion space has an opening that opens in a direction perpendicular to the axial direction and extends over the entire length of the insertion space in the axial direction. The electric wire insertion jig according to claim 1.

3. a cover portion that is formed to protrude from the abutment portion toward a side where the rod-shaped portion is provided in the axial direction and is positioned at a distance from the rod-shaped portion in a direction perpendicular to the axial direction, The cover portion covers the expanded end portion when the end portion on one side in the axial direction of the cylindrical member is abutted against the abutting portion and expanded in diameter. The electric wire insertion jig according to claim 1 or 2.

4. a gripping portion provided on the opposite side of the rod-shaped portion with respect to the abutting portion in the axial direction, the gripping portion having a length in an orthogonal direction perpendicular to the axial direction that is longer than a length of the rod-shaped portion in the orthogonal direction, The insertion space is formed across the rod-shaped portion, the abutting portion, and the grip portion along the axial direction. The electric wire insertion jig according to claim 3.

5. a step of inserting an electric wire along an axial direction into an insertion space of an electric wire insertion jig, the insertion space being formed in an axial direction across the rod-shaped portion and the abutment portion, the insertion space being provided at one end of the rod-shaped portion in the axial direction; a step of inserting the rod-shaped portion together with the electric wire into an interior of a tubular member having elasticity and formed into a tubular shape by weaving fibers; a step of abutting one end of the cylindrical member in the axial direction against the abutting portion, thereby receiving an abutting reaction force from the abutting portion and expanding a diameter of the one end of the cylindrical member in the axial direction; a step of moving the electric wire insertion jig and the tubular member along the axial direction relative to the electric wire in a state in which the tubular member is expanded in a direction perpendicular to the axial direction, thereby attaching the tubular member to the electric wire; removing the electric wire insertion jig from the cylindrical member and the electric wire; A wire insertion method comprising:

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