Wire harness

Abstract

To provide a wiring harness to firmly fix an electric cable to a housing.SOLUTION: A wiring harness 1 comprises: a shield shell 3 to be fixed to the frame of a device; multiple terminal-added electric cables 4 having electric cables 41 and connection components arranged at the end of the electric cables to be inserted into the frame; a housing 2, which is held by the shield shell, having a support member 20 for supporting the multiple electric cables, a protrusion member 23 protruding between the multiple electric cables along the axial direction X of the electric cables from the support member, and holes 24 formed in the protrusion member; and multiple binding bands 5 inserted into the holes for individually fixing the multiple electric cables to the protrusion member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wire harness. [Background technology]

[0002] Conventionally, there are terminal structures for wire harnesses. Patent Document 1 discloses a terminal structure for wire harnesses that includes a wire harness, an inner holder formed with an electric wire insertion hole, and a metal shield shell that movably holds the inner holder and grounds the braided wire to a metal housing. In the terminal structure for wire harnesses disclosed in Patent Document 1, the electric wires are fixed to the electric wire mounting pieces of the inner holder with tape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-61668 Summary of the Invention [Problem to be solved by the invention]

[0004] During the process of connecting electric wires to a mating device, the tape securing the electric wires may peel off or stretch. As a result, the connection parts at the ends of the electric wires may become misaligned, reducing the efficiency of the connection work. Therefore, it is desirable to be able to firmly secure the electric wires to the housing.

[0005] An object of the present invention is to provide a wire harness that can firmly fix electric wires to a housing. [Means for solving the problem]

[0006] The wire harness of the present invention is characterized by comprising: a shield shell fixed to a housing of an equipment; a plurality of terminal-equipped electric wires each having electric wires and a connecting part arranged at an end of the electric wires and inserted into the housing; a housing having a support part held by the shield shell and supporting the plurality of electric wires; a protrusion protruding from the support part between the plurality of electric wires along the axial direction of the electric wires and a hole formed in the protrusion; and a plurality of cable ties inserted into the hole and individually fixing the plurality of electric wires to the protrusion. [Effects of the Invention]

[0007] The housing of the wire harness according to the present invention includes a support portion that supports a plurality of electric wires, a protrusion portion that protrudes from the support portion between the plurality of electric wires along the axial direction of the electric wires, and a hole formed in the protrusion portion. The plurality of cable ties are inserted into the hole portion to individually fix the plurality of electric wires to the protrusion portion. The wire harness according to the present invention has the effect of firmly fixing the electric wires to the housing. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a wire harness according to an embodiment. [Figure 2] FIG. 2 is a plan view of the wire harness according to the embodiment. [Figure 3] FIG. 3 is a plan view of the housing and the electric wire with terminal according to the embodiment. [Figure 4] FIG. 4 is a perspective view of a housing according to the embodiment. [Figure 5] FIG. 5 is a cross-sectional view of a housing according to the embodiment. [Figure 6] FIG. 6 is a plan view of a wire harness according to a first modified example of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a wire harness according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiment. Furthermore, components in the following embodiments include those that can be easily imagined by a person skilled in the art or those that are substantially the same.

[0010] [Embodiment] An embodiment will be described with reference to Fig. 1 to Fig. 5. The embodiment relates to a wire harness. Fig. 1 is a perspective view of the wire harness according to the embodiment, Fig. 2 is a plan view of the wire harness according to the embodiment, Fig. 3 is a plan view of a housing and a terminal-equipped electric wire according to the embodiment, Fig. 4 is a perspective view of the housing according to the embodiment, and Fig. 5 is a cross-sectional view of the housing according to the embodiment. Fig. 5 shows a VV cross section of Fig. 4.

[0011] A wire harness 1 of this embodiment is connected to a device 100 mounted on a vehicle such as an automobile. As shown in Fig. 1 and Fig. 2 , the wire harness 1 of this embodiment includes a housing 2, a shield shell 3, a plurality of electric wires 4 with terminals, a plurality of cable ties 5, and a braid 6. The shield shell 3 is a tubular member made of a conductive metal.

[0012] The braid 6 is a shielding member made by braiding conductive wires into a tubular shape. The braid 6 covers the electric wires 41 of the terminal-fitted electric wire 4. An end of the braid 6 is fixed to the outer peripheral surface of the shield shell 3 by a crimping member 7. The crimping member 7 is a ring-shaped member, and the braid 6 is crimped by sandwiching it between the shield shell 3 and the crimping member 7. As shown in FIG. 2, the shield shell 3 is fixed to the housing 110 of the device 100. The housing 110 is made of a conductive metal. The braid 6 is electrically connected to the housing 110 via the shield shell 3.

[0013] The housing 2 is a member that is held by the shield shell 3 and supports the electric wire 41 of the electric wire with terminal 4. The housing 2 is formed of, for example, an insulating synthetic resin. As shown in FIG. 2 , the electric wire with terminal 4 has the electric wire 41 and a terminal 42 connected to the end of the electric wire 41. The electric wire 41 is a coated electric wire that has a core wire and an insulating coating that covers the core wire. The core wire is exposed at the end of the electric wire 41.

[0014] The terminal 42 is an example of a connecting part arranged at the tip of an electric wire. The terminal 42 is crimped onto the core wire and electrically connected to the core wire. The terminal 42 is inserted into the housing 110 of the device 100. The terminal 42 is electrically connected to a mating terminal 120 in the internal space of the housing 110. The illustrated terminal 42 has a flat portion that is connected to the mating terminal 120.

[0015] As shown in FIG. 1 , the housing 2 has a protrusion 23 that protrudes along the axial direction X of the electric wires 41. The protrusion 23 has holes 24 into which cable ties 5 are inserted. The cable ties 5 individually fix the electric wires 41 to the protrusion 23. The wire harness 1 of this embodiment can firmly fix each electric wire 41 to the housing 2. This suppresses misalignment of the terminal-attached electric wires 4 with respect to the housing 2. Therefore, the wire harness 1 of this embodiment can improve the workability of the connection process of connecting the wire harness 1 to the device 100.

[0016] In the following description, the axial direction of the electric wires 41 will be referred to as the "axial direction X." Furthermore, the width direction of the shield shell 3 and the housing 2 will be referred to as the "width direction Y." The multiple electric wires 41 are held by the housing 2 while being aligned in the width direction Y. Furthermore, the direction perpendicular to both the axial direction X and the width direction Y will be referred to as the "height direction Z."

[0017] As shown in FIGS. 1 and 2, the shield shell 3 has a main body 30 and a fixing portion 31. The main body 30 has a cylindrical shape and accommodates and holds the housing 2. The illustrated main body 30 has a rectangular cylindrical shape. The fixing portion 31 is a portion that is fixed to the casing 110 of the device 100. The fixing portion 31 protrudes in the axial direction X from an end of the main body 30 in the axial direction X. The fixing portion 31 has a flat plate shape that is perpendicular to the height direction Z, and is provided with a through-hole 31a.

[0018] 2 is inserted into the through-hole 31a. The fastening member 32 is, for example, a bolt. The fixing portion 31 is fixed to the housing 110 of the device 100 by the fastening member 32.

[0019] As shown in Figures 3 and 4, the housing 2 has a support portion 20 and a protrusion 23. The support portion 20 is a portion that is held by the shield shell 3 and supports a plurality of electric wires 41. The support portion 20 has an engagement piece 20a that engages with the shield shell 3. The engagement piece 20a is formed in a flexible arm shape and extends in the axial direction X. The inner wall surface of the shield shell 3 has a protrusion or a recess that engages the engagement piece 20a.

[0020] The illustrated wire harness 1 has two terminal-attached electric wires 4. In the following description, one terminal-attached electric wire 4 will be referred to as a first terminal-attached electric wire 4A, and the other terminal-attached electric wire 4 will be referred to as a second terminal-attached electric wire 4B. The first terminal-attached electric wire 4A has a first electric wire 41A and a first terminal 42A. The second terminal-attached electric wire 4B has a second electric wire 41B and a second terminal 42B. The housing 2 holds the first electric wire 41A and the second electric wire 41B side by side in the width direction Y. The housing 2, for example, aligns the first electric wire 41A and the second electric wire 41B in parallel. In this case, the first terminal 42A and the second terminal 42B are positioned on the same plane.

[0021] The protruding portion 23 protrudes from the end face of the support portion 20 in the axial direction X. The protruding portion 23 is located between the two electric wires 41. More specifically, when viewed from the height direction Z, the protruding portion 23 is located between the first electric wire 41A and the second electric wire 41B in the width direction Y.

[0022] As shown in FIG. 4, the support part 20 of this embodiment is composed of a main body 21 and a cover 22. The main body 21 and the cover 22 face each other in the height direction Z and are connected to each other. The main body 21 has a block part 21a and a semi-cylindrical part 21b. The block part 21a has a rectangular parallelepiped shape and has two grooves 21c that support the electric wires 41. The two grooves 21c extend along the axial direction X and are aligned in the width direction Y. The cross-sectional shape of the grooves 21c is semicircular. The semi-cylindrical part 21b is located on an extension line of the grooves 21c and protrudes from the block part 21a in the axial direction X. The main body 21 has two semi-cylindrical parts 21b aligned in the width direction Y. The semi-cylindrical parts 21b are shaped like arcs.

[0023] The cover 22 has a block portion 22a and a semi-cylindrical portion 22b. The block portion 22a has a rectangular parallelepiped shape and has two grooves 22c that support the electric wires 41. The two grooves 22c extend along the axial direction X and are aligned in the width direction Y. The cross-sectional shape of the grooves 22c is semicircular. The grooves 22c face the grooves 21c in the height direction Z, thereby forming a circular passage through which the electric wires 41 are inserted. More specifically, one groove 22c is combined with one groove 21c to form a first passage 25A. The other groove 22c is combined with another groove 21c to form a second passage 25B. The first passage 25A accommodates the first electric wire 41A. The second passage 25B accommodates the second electric wire 41B.

[0024] The semi-cylindrical portion 22b is located on an extension line of the groove 22c and protrudes from the block portion 22a in the axial direction X. The semi-cylindrical portion 22b faces the semi-cylindrical portion 21b in the height direction Z, thereby forming a cylinder through which the electric wire 41 is inserted. The cover 22 engages with the main body 21 along the height direction Z. An engagement piece 21d protruding along the height direction Z is provided on a side surface of the block portion 21a of the main body 21. A protrusion 22d that engages with the engagement piece 21d is provided on a side surface of the block portion 22a of the cover 22.

[0025] The protrusion 23 protrudes from the block portion 21a of the main body 21 in the axial direction X. More specifically, the protrusion 23 protrudes from the end face 21e of the block portion 21a. The end face 21e is the end face opposite to the side of the semi-cylindrical portion 21b. In other words, the protrusion 23 protrudes in the direction opposite to the protruding direction of the semi-cylindrical portion 21b. The protrusion 23 is located between the two grooves 21c.

[0026] The protrusion 23 is formed in a columnar shape with a substantially trapezoidal cross section. The protrusion 23 has a first support surface 23a, a second support surface 23b, a first side surface 23c, and a second side surface 23d. The two side surfaces 23c, 23d each face in the height direction Z. The first side surface 23c forms the upper base of the trapezoid and faces toward the cover 22. The second side surface 23d forms the lower base of the trapezoid and faces the side opposite to the cover 22. The two support surfaces 23a, 23b each face in the width direction Y.

[0027] The cross-sectional shape of the support surfaces 23a, 23b is an arc shape corresponding to the diameter of the electric wire 41. The first support surface 23a supports the first electric wire 41A, and the second support surface 23b supports the second electric wire 41B. The first support surface 23a is located on an extension line of the groove 21c that forms the first passage 25A and is continuous with this groove 21c. The second support surface 23b is located on an extension line of the groove 21c that forms the second passage 25B and is continuous with this groove 21c. The housing 2 is attached to the device 100, for example, with the first support surface 23a and the second support surface 23b facing obliquely upward. In this case, the first support surface 23a and the second support surface 23b can support the electric wire 41 from below.

[0028] The protrusion 23 has a first hole 24A and a second hole 24B. The holes 24A and 24B penetrate the protrusion 23 along the height direction Z. That is, the holes 24A and 24B open to the first side surface 23c and the second side surface 23d. The two holes 24A and 24B are aligned along the axial direction X. The first hole 24A is located at the tip of the protrusion 23, and the second hole 24B is located in the middle of the protrusion 23.

[0029] The two holes 24A and 24B are located at different positions in the width direction Y. The first hole 24A is located on the side of the first support surface 23a and is adjacent to the first support surface 23a. The second hole 24B is located on the side of the second support surface 23b and is adjacent to the second support surface 23b.

[0030] FIG. 5 shows a cross section of the protrusion 23 at the position of the first hole 24A. As shown in FIG. 5, the protrusion 23 has a first wall 23e having a first support surface 23a and a second wall 23f having a second support surface 23b. The walls 23e and 23f are formed in a curved plate shape. The first wall 23e has a winding surface 23g around which the binding band 5 is wound. The winding surface 23g is the surface of the first wall 23e that faces the opposite side from the first support surface 23a. The cross-sectional shape of the winding surface 23g is a curved shape that corresponds to the cross-sectional shape of the first support surface 23a.

[0031] As shown in FIG. 3 and other figures, the first electric wire 41A is bound to the protrusion 23 by a first cable tie 5A. The second electric wire 41B is bound to the protrusion 23 by a second cable tie 5B. The cable tie 5 has a band portion 51 and a head portion 52. The head portion 52 has a hole through which the band portion 51 can be inserted, and the hole is provided with a locking structure for locking the band portion 51. The band portion 51 of the first cable tie 5A is inserted through the first hole portion 24A, wrapped around the first electric wire 41A, and engaged with the head portion 52. The band portion 51 of the second cable tie 5B is inserted through the second hole portion 24B, wrapped around the second electric wire 41B, and engaged with the head portion 52.

[0032] The curved shape of the first wall portion 23e described above allows the cable tie 5 to firmly secure the electric wire 41 to the protrusion 23. The dashed line 5i in FIG. 5 indicates the ring portion of the first cable tie 5A wound around the first electric wire 41A and the first wall portion 23e. The first cable tie 5A is inserted into the first hole portion 24A and binds the first wall portion 23e and the first electric wire 41A together. The arc-shaped curved shape of the first wall portion 23e makes it less likely that a gap will form between the first cable tie 5A and the first electric wire 41A. This improves the holding force of the first cable tie 5A to hold the first electric wire 41A.

[0033] Furthermore, since the first cable tie 5A is less likely to loosen, the first electric wires 41A are less likely to deviate from their normal positions. Therefore, the wire harness 1 of the present embodiment can maintain the length of the electric wires 41 from the housing 2 to the terminals 42 at a specified length.

[0034] Furthermore, since the cross-sectional shape of first support surface 23a is an arc shape, the contact area between first support surface 23a and first electric wire 41A is increased, and therefore first electric wire 41A can be firmly fixed by first support surface 23a and first cable tie 5A.

[0035] The second wall portion 23f has a curved shape corresponding to the first wall portion 23e. Therefore, the second cable tie 5B inserted into the second hole portion 24B can firmly fix the second electric wire 41B to the second wall portion 23f. The second support surface 23b has an arc shape similar to the first support surface 23a. Therefore, the second electric wire 41B can be firmly fixed by the second support surface 23b and the second cable tie 5B.

[0036] In the protrusion 23 of this embodiment, the first support surface 23a and the second support surface 23b each extend in the axial direction X. Therefore, the protrusion 23 can hold the first electric wire 41A and the second electric wire 41B in parallel. Therefore, the wire harness 1 of this embodiment can suppress variations in the pitch between the first terminal 42A and the second terminal 42B in the width direction Y. The distance between the first support surface 23a and the second support surface 23b in the width direction Y is determined so that the pitch between the first terminal 42A and the second terminal 42B can be a desired value.

[0037] 3, in the protrusion 23 of this embodiment, the first hole portion 24A and the second hole portion 24B are aligned along the axial direction X. Since the positions of the first hole portion 24A and the second hole portion 24B are shifted in the axial direction X in this manner, it is possible to reduce the width of the protrusion 23.

[0038] As described above, the wire harness 1 of this embodiment includes the shield shell 3, the plurality of terminal-equipped electric wires 4, the housing 2, and the plurality of cable ties 5. The shield shell 3 is fixed to the housing 110 of the device 100. The terminal-equipped electric wires 4 include electric wires 41 and terminals 42 connected to ends of the electric wires 41. The terminals 42 are inserted into the housing 110. The housing 2 includes a support portion 20, a protruding portion 23, and holes 24 formed in the protruding portion 23. The support portion 20 is held by the shield shell 3 and supports the plurality of electric wires 41. The protruding portion 23 protrudes from the support portion 20 between the plurality of electric wires 41 along the axial direction X of the electric wires 41. The plurality of cable ties 5 are inserted into the holes 24 and individually fix the plurality of electric wires 41 to the protruding portion 23.

[0039] In the wire harness 1 of the present embodiment, the protrusions 23 are located between the plurality of electric wires 41, and the plurality of electric wires 41 are individually fixed to the protrusions 23 by the binding bands 5. Therefore, the wire harness 1 of the present embodiment can firmly fix the plurality of electric wires 41 to the housing 2.

[0040] The support part 20 of this embodiment has a plurality of passages 25A, 25B that individually accommodate a plurality of electric wires 41. The protruding part 23 protrudes from a position between the first passage 25A and the adjacent second passage 25B. With this configuration, the protruding part 23 can be aligned with the electric wires 41 protruding from the passages 25A, 25B. This facilitates the task of fixing the electric wires 41 to the protruding part 23 with the cable tie 5. Furthermore, the electric wires 41 can be extended linearly from the passages 25A, 25B to the tip of the protruding part 23. Therefore, when fixing the electric wires 41 to the protruding part 23, excessive force such as bending is unlikely to be applied to the electric wires 41.

[0041] The protrusion 23 of this embodiment has a plurality of holes 24A, 24B. The plurality of holes 24A, 24B are aligned along the axial direction X. The first cable tie 5A is inserted into the first hole 24A, and the second cable tie 5B is inserted into the second hole 24B. By aligning the plurality of holes 24A, 24B in the axial direction X, the plurality of holes 24A, 24B can be provided without increasing the width of the protrusion 23.

[0042] The number of electric wires 41 held by the housing 2 is not limited to two as illustrated, and may be three or more. For example, the housing 2 may hold a third electric wire in addition to the first electric wire 41A and the second electric wire 41B. The first electric wire 41A, the second electric wire 41B, and the third electric wire may be arranged in this order in the width direction Y. In this case, the housing 2 may have, in addition to the protrusion 23, a second protrusion formed similarly to the protrusion 23. The second protrusion is disposed between the second electric wire 41B and the third electric wire. The three electric wires 41 may be disposed to form a triangle when viewed from the axial direction X. In this case, the protrusion 23 may be disposed inside the triangle formed by the first electric wire 41A, the second electric wire 41B, and the third electric wire. The protrusion 23 may have a third hole corresponding to the third electric wire.

[0043] [First Modification of the Embodiment] A first modified example of the embodiment will be described. Fig. 6 is a plan view of a wire harness according to the first modified example of the embodiment. The first modified example of the embodiment differs from the above embodiment in that, for example, a plurality of binding bands 5 are inserted into one hole portion 24.

[0044] As shown in FIG. 6 , the protrusion 23 according to the first modified example of the embodiment protrudes from the support portion 20 of the housing 2 in the axial direction X. The protrusion 23 protrudes between the first electric wire 41A and the second electric wire 41B. The protrusion 23 has one hole 24. The hole 24 penetrates the protrusion 23 along the height direction Z. The hole 24 is formed so that two cable ties 5 can be inserted therethrough.

[0045] The first cable tie 5A and the second cable tie 5B are inserted into the same hole 24. The first cable tie 5A is wound around the first electric wire 41A and secures the first electric wire 41A to the protrusion 23. The second cable tie 5B is wound around the second electric wire 41B and secures the second electric wire 41B to the protrusion 23.

[0046] The protrusion 23 has a first support surface 23a that supports the first electric wire 41A and a second support surface 23b that supports the second electric wire 41B. The cross-sectional shape of the first support surface 23a and the cross-sectional shape of the second support surface 23b are preferably arc shapes that correspond to the outer diameter of the electric wire 41.

[0047] In the wire harness 1 according to the first modified example of the embodiment, the number of holes 24 that the protrusion 23 has is set to one, so that the housing 2 can be made smaller in size in the axial direction X.

[0048] The contents disclosed in the above-described embodiments and modifications can be implemented in appropriate combinations. [Explanation of symbols]

[0049] 1 Wire harness 2: Housing, 3: Shield shell, 4: Wire with terminal 5: cable tie, 5A: first cable tie, 5B: second cable tie 6: Braid, 7: Crimping member 20: Support part, 20a: Engagement piece 21: main body, 21a: block portion, 21b: semi-cylindrical portion, 21c: groove 22: Cover; 22a: Block portion; 22b: Half-cylinder portion; 22c: Groove 23: Projection, 23a: First support surface, 23b: Second support surface, 23c: First side surface 23d: second side surface, 23e: first wall portion, 23f: second wall portion, 23g: winding surface 24: Hole, 24A: First hole, 24B: Second hole 25A: First aisle, 25B: Second aisle 41: Electric wire, 41A: First electric wire, 41B: Second electric wire 42:Terminal, 42A:First terminal, 42B:Second terminal 100: device, 110: housing, 120: counterpart terminal X: Axial direction, Y: Width direction, Z: Height direction

Claims

1. a shield shell fixed to a housing of the device; a plurality of terminal-attached electric wires each having an electric wire and a connecting part disposed at an end of the electric wire and inserted into the housing; a housing including: a support portion that is held by the shield shell and supports the plurality of electric wires; a protrusion that protrudes from the support portion between the plurality of electric wires along the axial direction of the electric wires; and a hole formed in the protrusion; a plurality of binding bands inserted into the holes and individually fixing the plurality of electric wires to the protrusions; A wire harness comprising:

2. the support portion has a plurality of passages for individually accommodating the plurality of electric wires; The protrusion protrudes from a position between one of the passages and another adjacent one of the passages. The wire harness according to claim 1 .

3. the protrusion has a plurality of the holes, and the plurality of the holes are aligned along the axial direction, One of the cable ties is inserted into one of the holes, and another of the cable ties is inserted into another of the holes. The wire harness according to claim 1 or 2.

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