JP2012120339A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an operation of bundling electric wire groups so that all of the electric wire groups directing to three or more directions are held along a predetermined path, in a branch position of the electric wire group included in a wire harness.SOLUTION: A wire harness 1 has a branched electric wire group 8 and an electric wire bundling tool 10. The electric wire bundling tool 10 is a tool formed of three or more long parts 11 of which the resin coating is coated on a metallic bar-shaped core member, and which are bending-deformable and are branched from one branch part 101. The electric wire bundling tool 10 bundles each of the electric wire groups 81, 82 and 83 by winding each long part 11 on each of the electric wire groups 81, 82 and 83 which directs to three or more directions from a branch position 7 of the electric wire group, and holds the branched state of the electric wire groups. Furthermore, each of holding parts 20 at the both ends of the electric wire bundling tool 10 holds an electric wire 9 of a wire bundle by sandwiching the electric wire.

Description

  The present invention relates to a wire harness provided with branched electric wire groups.

  In many cases, a wire harness mounted on a vehicle such as an automobile includes a group of branched wires. In this case, the wire harness forms a path of a bundle of wires divided in three or more directions from a branch position of the group of wires. . In such a wire harness, an electric wire bundle that is likely to have irregular bending marks (habits) must be correctly wired along a predetermined route including a branch position.

  In a conventional wire harness assembly process, a wiring jig is used. The jig includes a workbench and a plurality of electric wire holders fixed to positions along a predetermined path on the workbench and hooked with electric wires. First, the operator performs wiring while sequentially hooking the wire group constituting the wire harness onto the wire holder of the jig. Thereafter, the operator binds the wire group by winding the adhesive tape around the wire group and regulates the route of the wire bundle.

  However, the operation of winding the adhesive tape around the electric wire group so that each of the electric wire groups heading in a plurality of directions is held along a predetermined path at the branch position of the electric wire group is an operation requiring skill.

  On the other hand, in Patent Literature 1, an electric wire binding tool in which a long bendable member is coated with a resin is spirally wound around an electric wire group at a branch position where the electric wire group branches from a main line to a branch line. A wire harness with a configured configuration is shown. According to the technique disclosed in Patent Document 1, the operation of bundling the electric wire groups is facilitated so that the electric wire groups heading in a plurality of directions are held along predetermined paths at the branch positions of the electric wire groups. .

JP 2005-267896 A

  By the way, when the wire harness shown by patent document 1 is employ | adopted, the electric wire group which goes to two directions among the electric wire groups which go to three or more directions from the branch position of an electric wire group is bundled and hold | maintained by the electric wire binding tool. The However, the electric wire group heading in the other direction is not bound and held by the electric wire binding tool.

  The present invention facilitates the work of bundling an electric wire group so that all of the electric wire groups heading in three or more directions are held along a predetermined path at a branch position of the electric wire group included in the wire harness. With the goal.

  The wire harness which concerns on this invention is equipped with the branched electric wire group and an electric wire binding tool. The electric wire binding tool is a tool in which three or more elongate bending-deformable parts in which a metallic rod-shaped core member is coated with a resin are branched from one branch part. Furthermore, in the wire harness according to the present invention, the wire binding tool binds each of the wire groups by winding each of the long portions around each of the wire groups heading in three or more directions from the branch position of the wire group. At the same time, the branch state of the wire group is maintained.

  In the wire harness according to the present invention, it is conceivable that the electric wire binding tool includes a grip portion that is provided at the tip of each of the three or more long portions and holds the electric wire therebetween. In this case, each gripping part holds the electric wires of each electric wire group heading in three or more directions from the branch position of the electric wire group.

  Further, in the wire harness according to the present invention, it is conceivable that the gripping part occupies a partial range of the tip of each long part, and is a part that holds the electric wire inside by being folded and bent. In this case, it is desirable that the tip portion of the long portion forming the grip portion is further bent.

  On the other hand, in the wire harness according to the present invention, it is conceivable that the gripping portion includes the following components. A 1st component is a bifurcated arm part which is fixed to the front-end | tip of each elongate part, and has flexibility. The second component is an engaging portion that is formed at the tip of each of the bifurcated arm portions and holds the bifurcated arm portions in a state in which the electric wire is sandwiched between them by being hooked to each other.

  In this invention, since the elongate part which can be bent and comprises the electric wire binding tool is equipped with a metallic core member, it has the characteristic of maintaining the bent shape. Therefore, in the wire harness according to the present invention, the electric wire binding tool is configured so that all of the electric wire groups heading in three or more directions at the branch position of the electric wire group are along a predetermined route due to the shape maintaining characteristic of the long portion. Hold. Therefore, using the wire binding tool of the present invention, the work of binding the wire groups so that all the wire groups heading in three or more directions are held along a predetermined path is a work using an adhesive tape. It is much easier than that.

  Moreover, the wire binding tool in the present invention is easier to remove from the wire group than the adhesive tape, and the removed wire binding tool can be reused. For this reason, the use of the electric wire binding tool in the present invention facilitates the work of rebinding the electric wire groups accompanying a design change or the like.

  By the way, when a protrusion part or a corner | angular part exists around the wire harness which concerns on this invention, the front-end | tip part in the elongate part of the wire binding tool wound around the electric wire group will be hooked on the surrounding thing. If it does so, inconveniences, such as loose binding of an electric wire group and a position shift of an electric wire binding tool, may arise.

  Therefore, in the wire harness according to the present invention, if the grip portion provided at the distal end of the long portion of the wire binding tool holds the electric wire of the bundle of wires, the distal end portion of the long portion is caught by surrounding objects. The loosening of the binding of the electric wire group and the positional deviation of the electric wire binding tool due to this are prevented.

  In the present invention, if the gripping portion is a folded and bent portion at the tip of the long portion, the gripping portion can be realized with a very simple configuration. Further, if the tip portion of the long portion that forms the grip portion is further bent, the tip portion functions as a retainer for the electric wire sandwiched between the folded portions. As a result, loosening of the binding of the electric wire group and positional deviation of the electric wire binding tool are more reliably prevented.

  In the present invention, the gripping portion includes a bifurcated arm portion and an engaging portion formed at the tip of each of the bifurcated arm portion, so that the holding force of the electric wire by the gripping portion is further increased. As a result, loosening of the binding of the electric wire group and positional deviation of the electric wire binding tool are more reliably prevented.

It is an external view of the principal part of the wire harness 1 which concerns on 1st Embodiment of this invention. It is a perspective view of the electric wire binding tool 10 with which the wire harness 1 is provided. It is sectional drawing of the elongate part in the electric wire binding tool 10. FIG. It is a side view of the electric wire binding tool 10 in which the holding part which pinches | interposes an electric wire in the edge part was formed. It is a figure which shows the holding part of the electric wire binding tool 10 which pinches | interposes an electric wire. It is an external view of the principal part of the wire harness 1A which concerns on 2nd Embodiment of this invention. It is a perspective view of electric wire binding tool 10A with which wire harness 1A is provided. It is a perspective view of the electric wire binding tool 10B which can be employ | adopted for the wire harness 1. FIG. It is a perspective view of the part of the holding part of the electric wire binding tool 10C which can be employ | adopted for the wire harness 1. FIG. It is a figure which shows the holding part of 10 C of electric wire binding tools which pinch | interpose an electric wire.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention. The wire harnesses 1 and 1A according to the embodiment of the present invention are mounted on a vehicle such as an automobile, and electrically connect, for example, a power supply source such as an inverter circuit and electrical equipment, or a plurality of electrical equipments. To do.

<First Embodiment>
First, the configuration of the wire harness 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the wire harness 1 includes a branched electric wire group 8 including a plurality of electric wires 9 and an electric wire binding tool 10.

  The wire harness 1 forms a path of an electric wire bundle that is divided in three or more directions from the branch position 7 of the electric wire group 8. In the example shown in FIG. 1, the electric wire group 8 is divided into three directions from the branch position 7. Hereinafter, among the electric wire groups 8 divided into the three-direction routes from the branch position 7, the electric wire group 8 along the first route is the first electric wire group 81, and the electric wire group 8 along the second route is the second electric wire group 82. The electric wire group 8 along the third path is referred to as a third electric wire group 83.

  In the example shown in FIG. 1, the angle formed by the route of the first wire group 81 and the route of the second wire group 82 is 180 °, and the route of the first wire group 81, the second wire group 82 and the third wire The angle formed by the route of the wire group 83 is 90 °, but the angle formed by the route of each wire group is not necessarily 180 ° or 90 °.

  As shown in FIGS. 1 and 2, the electric wire binding tool 10 is a member formed by three long portions 11 branching from one branch portion 101. It can be said that the branch part 101 is a connection part that integrally connects the three long parts 11 extending in each of the three directions.

  As shown in FIG. 2, in the wire binding device 10, the angles formed by the three long portions 11 are 180 ° and 90 °, similarly to the angle formed by the branched wire group. On the other hand, FIG. 8 is a perspective view of an electric wire binding tool 10 </ b> B that can be employed in the wire harness 1. The angle formed by the three or more long portions 11 is set according to the angle formed by the branched wire group, and is not necessarily 180 ° or 90 °. For example, it is also conceivable that an electric wire binding tool 10B as shown in FIG. The three long portions 11 in the wire binding tool 10B form an angle other than 180 ° and 90 °.

  As shown in FIG. 3, the long portion 11 of the wire binding device 10 is a member capable of bending deformation in which a metallic rod-shaped core member 13 is coated with a resin coating 14. The core member 13 is made of a material such as a copper alloy, iron, or stainless steel, for example. Further, the core member 13 is formed in a long plate shape so as to obtain a characteristic capable of bending deformation and to ensure a sufficient contact area with the electric wire group 8. Since the long part 11 of the electric wire binding tool 10 includes the metallic core member 13, it has a characteristic of maintaining a bent shape. It is also conceivable that the core member 13 has a round bar shape.

  In the present embodiment, the core member 13 is an integrally formed member that forms the cores of both the three long portions 11 and the branch portion 101. However, the core member 13 forms the core of each of the three long portions 11, and one end of each of the three core members 13 is provided with respect to the branch portion 101 provided separately from the three core members 13. It is also possible to use a structure that has been fixed in a fixed manner. In this case, it is conceivable that the branch portion 101 is a resin member in which three holes into which one end of each of the three long portions 11 is inserted are formed.

  The resin coating 14 is, for example, a coating material made of a resin material such as vinyl chloride, but may be made of another resin material having flexibility. The thickness of the plate-shaped core member 13 is, for example, in the range of about 1.0 mm to about 1.5 mm, and the width of the plate-shaped core member 13 is, for example, about 4.0 mm to 4.5 mm. It is formed with.

  Further, as shown in FIG. 4, the portion 12 occupying a partial range of the tip of each of the long portions 11 in the wire binding device 10 is folded and bent to hold the electric wire 9 on the inside to hold it. 20 That is, the portion 12 occupying a part of the range of the tip of each of the long portions 11 is folded back and bent, whereby a return path portion 21 that is a portion closer to the tip from the folded position and a portion closer to the branching portion 101 from the folded portion. The forward path portion 22 is formed.

  And as FIG. 5 shows, the return path part 21 and the outward path part 22 which were formed in the front-end | tip of each elongate part 11 pinch | interpose the electric wire 9 between them. Further, the return path portion 21 and the forward path portion 22 are held in a state where the electric wire 9 is sandwiched by the shape maintaining characteristic of the core member 13. In the example shown in FIG. 5, the gripping part 20 (return path part 21 and forward path part 22) grips one electric wire 9, but the gripping part 20 may grip a plurality of electric wires 9. Conceivable.

  As shown in FIGS. 4 and 5, the tip portion 23 of the portion 12 forming the grip portion 20 in the wire binding device 10, that is, the tip portion of the return path portion 21 is further bent and formed. Yes. The tip portion 23 functions as a retainer for the electric wire 9 sandwiched between the return path portion 21 and the forward path portion 22.

  As shown in FIG. 1, in the wire harness 1, the three long portions 11 in the wire binding tool 10 are a first electric wire group 81 and a second electric wire group 82 that are directed in three directions from the branch position 7 of the electric wire group 8. The third electric wire group 83 is wound in a spiral shape. Thereby, the elongate part 11 of the electric wire binding tool 10 binds these 1st electric wire group 81, the 2nd electric wire group 82, and the 3rd electric wire group 83, respectively. In addition, as a form of winding of the long part 11 around the electric wire group 8, other various forms not shown in FIG. 1 are also conceivable.

  Further, the long portion 11 of the wire binding device 10 holds the branched state of the first electric wire group 81, the second electric wire group 82, and the third electric wire group 83 due to the shape maintaining characteristic of the core member 13. That is, the wire binding tool 10 is wound around each of the first wire group 81, the second wire group 82, and the third wire group 83 in which each of the three long portions 11 is directed in the three directions from the branch position 7 of the wire group. As a result, the electric wire groups heading in the three directions are bundled and the branch state of the electric wire group is maintained.

  Therefore, the electric wire binding tool 10 is used to bind the electric wire group 8 so that all the electric wire groups 81, 82, 83 from the branch position 7 of the electric wire group in the three directions are held along a predetermined path. The work to do is much easier than the work using the adhesive tape.

  In addition, as for the length of the elongate part 11 in the wire binding tool 10, it is desirable that it is the length which can be wound about 2 to 4 times around each electric wire group 8 from which a path | route differs.

  Further, as shown in FIGS. 1 and 5, each of the gripping portions 20 at the tips of the three long portions 11 in the wire binding tool 10 is a bundle of first electric wire groups 81 that form paths in three directions, A part of the wires 9 in the bundle of the second wire group 82 and the bundle of the third wire group 83 is sandwiched and held. Therefore, the looseness of the binding of the electric wire group 8 and the positional displacement of the wire binding tool 10 due to the tip portion of the wire binding tool 10 being caught by a surrounding object are prevented.

  Moreover, in the wire harness 1, since the holding part 20 is a part which was just folded and bent in the front-end | tip of each elongate part 11, the holding part 20 is realizable by a very simple structure.

  Furthermore, since the tip portion 23 of the portion forming the grip portion 20 functions as a retainer for the electric wire 9 sandwiched between the return path portion 21 and the forward path portion 22, loosening of the binding of the wire group 8 and the wire binding tool are performed. The positional deviation of 10 is more reliably prevented.

  Moreover, the wire binding tool 10 in the wire harness 1 is easier to remove from the wire group 8 than the adhesive tape, and the removed wire binding tool 10 can be reused. For this reason, the use of the wire binding tool 10 facilitates the work of rebinding the wire group 8 due to a design change or the like.

Second Embodiment
Next, a wire harness 1A according to a second embodiment of the present invention will be described with reference to FIGS. The wire harness 1A according to the second embodiment is different from the wire harness 1 shown in FIG. 1 only in the number of branches of the electric wire group 8 and the number of long portions 11 in the electric wire binding tool 10. Have. The wire harness 1 </ b> A includes an electric wire binding tool 10 </ b> A corresponding to the electric wire binding tool 10 of the wire harness 1. 6 and 7, the same components as those shown in FIGS. 1 to 5 are given the same reference numerals. Hereinafter, only different points of the wire harness 1A from the wire harness 1 will be described.

  6 is an external view of the main part of the wire harness 1A, and FIG. 7 is a perspective view of an electric wire binding tool 10A provided in the wire harness 1A.

  As shown in FIG. 6, the wire harness 1 </ b> A forms a route of the wire bundle that is divided from the branch position 7 of the wire group 8 in four directions. That is, the electric wire group 8 is divided into four directions from the branch position 7. Hereinafter, of the electric wire group 8 divided into four directions from the branch position 7, the electric wire group 8 along the first route is the first electric wire group 81, and the electric wire group 8 along the second route is the second electric wire group 82. The electric wire group 8 along the third route is referred to as a third electric wire group 83, and the electric wire group 8 along the fourth route is referred to as a fourth electric wire group 84.

  In the example shown in FIG. 6, the angle formed by the route of the first wire group 81 and the route of the second wire group 82 is 180 °. The angle formed by the path of the three wire group 83 and the path of the fourth wire group 84 is 90 °, but the angle formed by the path of each wire group is not necessarily 180 ° or 90 °.

  As shown in FIGS. 6 and 7, the wire binding tool 10 </ b> A is a member formed by four long portions 11 branching from one branch portion 101. It can be said that the branch part 101 is a connection part that integrally connects the four long parts 11 extending in each of the four directions.

  Each of the long portions 11 of the wire binding tool 10 </ b> A has the same structure as each of the long portions 11 of the wire binding tool 10. Further, each of the long portions 11 of the wire binding tool 10 </ b> A is bent similarly to each of the long portions 11 of the wire binding tool 10 to form the grip portion 20 shown in FIGS. 4 and 5.

  As shown in FIG. 6, in the wire harness 1 </ b> A, the wire binding tool 10 </ b> A includes a first electric wire group 81, a second electric wire, each of which has four long portions 11 extending in four directions from the branch position 7 of the electric wire group. By being wound around each of the group 82, the third electric wire group 83, and the fourth electric wire group 84, the electric wire groups heading in the four directions are bound and the branch state of the electric wire group is maintained.

  Further, as shown in FIGS. 6 and 5, each of the gripping portions 20 at the tips of the three long portions 11 in the wire binding tool 10 </ b> A is a bundle of the first electric wire group 81 that forms each of the four-direction paths, A part of the electric wires 9 in the bundle of the second electric wire group 82, the bundle of the third electric wire group 83, and the bundle of the fourth electric wire group 84 is sandwiched and held.

  By adopting the wire harness 1 </ b> A shown in FIG. 6, the same effect as when the wire harness 1 shown in FIG. 1 is adopted can be obtained. That is, when N is an integer of 3 or more, the wire harness according to the present invention includes an electric wire binding tool in which N long portions are branched from one branch portion. Furthermore, the wire binding tool binds each of the wire groups in the N direction by winding each of the N long portions 11 around each of the wire groups in the N direction from the branch position 7 of the wire group. The branch state of the electric wire group heading in the N direction is maintained.

<Application example of the first embodiment>
Next, an electric wire binding tool 10C applicable to the wire harness 1 will be described with reference to FIGS. 9 and 10. The wire binding tool 10 </ b> C has a configuration that differs from the wire binding tool 10 only in the structure of the gripping portion at the tip of each of the three long portions 11. That is, the wire binding tool 10 </ b> C includes a grip portion 30 fixed to the tip of each of the three long portions 11. The grip portion 30 is a member that is manufactured separately from the long portion 11.

  FIG. 9 is a perspective view of a portion of the grip portion 30 of the wire binding tool 10 </ b> C that can be employed in the wire harness 1, and FIG. 10 is a diagram illustrating the grip portion 30 of the wire binding tool 10 </ b> C that sandwiches the wire 9. In FIG. 9, the grip portion 30 provided on one long portion 11 is shown, but the grip portions 30 provided on the remaining two long portions 11 are not shown. .

  As shown in FIGS. 9 and 10, in the electric wire binding tool 10 </ b> C applicable to the wire harness 1, the grip portion 30 provided at the tip of each of the long portions 11 includes bifurcated arm portions 32 and 33 and bifurcated arms. Engaging portions 34 and 35 formed at the tips of the arm portions 32 and 33, respectively. The bifurcated arm portions 32 and 33 are formed to extend bifurcated from a pedestal portion 31 fixed to the tip of each of the three long portions 11. The pedestal 31, the bifurcated arms 32 and 33, and the engaging portions 34 and 35 are, for example, an integrally formed member made of resin. Alternatively, the pedestal 31, the bifurcated arms 32 and 33, and the engaging portions 34 and 35 may be members in which a metal integral molding member is coated with a resin.

  The pedestal portion 31 is, for example, a cap-shaped member in which a hole into which the end of the long portion 11 is inserted is formed. The cap-shaped pedestal portion 31 is fixed to the distal end portion of the long portion 11 by, for example, inserting the distal end portion of the long portion 11 coated with an adhesive into the hole.

  Further, the bifurcated arm portions 32, 33 are formed to extend bifurcated from the pedestal portion 31 fixed to the distal ends of the long portions 11. The bifurcated arm portions 32 and 33 are portions having flexibility, and are formed in a state of facing each other with a gap in a natural state as shown in FIG.

  In the example shown in FIG. 9, the first arm portion 32 of the first arm portion 32 and the second arm portion 33 constituting the bifurcated arm portions 32, 33 is formed along the longitudinal direction of the long portion 11. Has been. Further, the second arm portion 33 is formed to be curved while standing with respect to one surface of the plate-like long portion 11. The curved portion of the second arm portion 33 is a portion into which the electric wire 9 is fitted. When a force is applied to the first arm part 32 and the second arm part 33 constituting the bifurcated arm parts 32 and 33 in the direction of the other party by the operator's hand, the bifurcated arm parts 32 and 33 are Bends to the position where it intersects.

  The engaging portions 34 and 35 are portions formed by bending in opposite directions from each other at the tips of the bifurcated arm portions 32 and 33. When the bifurcated arm portions 32 and 33 are bent to a position where they intersect each other with the electric wire 9 sandwiched therebetween, as shown in FIG. The joining portion 34 and the second engaging portion 35 at the tip of the second arm portion 33 are hooked to each other. Thereby, the engaging parts 34 and 35 hold | maintain the forked arm part 32 and 33 in the state which pinches | interposes the electric wire 9 between them.

  In the example shown in FIG. 10, the grip portion 30 (the first arm portion 32 and the second arm portion 33) grips one electric wire 9, but the grip portion 30 holds a plurality of electric wires 9. It is also possible to grasp. It is also conceivable that the grip portion 30 is employed in the wire binding tool 10A or the wire binding tool 10B.

  Since the grip portion 30 includes the bifurcated arm portions 32 and 33 and the engagement portions 34 and 35, the holding force of the electric wire 9 by the grip portion 30 is further increased. Therefore, by adopting the wire binding tool 10C for the wire harness 1, loosening of the binding of the electric wire group 8 and displacement of the wire binding tool 10C are more reliably prevented.

<Others>
In each embodiment shown above, although the holding parts 20 and 30 are formed in the front-end | tip part of each elongate part 11 in the wire binding tools 10, 10A, 10B, and 10C, the structure without the holding parts 20 and 30 is provided. May be adopted.

DESCRIPTION OF SYMBOLS 1,1A Wire harness 7 Branch position of electric wire group 8, 81, 82, 83 Electric wire group 9 Electric wire 10, 10A, 10B, 10C Electric wire binder 11 Long part of electric wire binder 13 Core member 14 Resin coating 20, 30 Grasping part 21 Returning part 22 Outward part 31 Pedestal part 32, 33 Arm part 34, 35 Engaging part 101 Branch part of electric wire binding tool

Claims (5)

A wire harness comprising a group of branched wires,
A wire binding tool in which a metal rod-shaped core member is coated with a resin, and three or more elongate portions that can be bent and deformed are branched from one branch portion;
The wire binding tool binds each of the wire groups by winding each of the long portions around each of the wire groups going in three or more directions from the branch position of the wire group, and A wire harness characterized by maintaining a branched state. The wire binding tool includes a grip portion that is provided at the tip of each of the three or more elongate members and holds the wire therebetween.
2. The wire harness according to claim 1, wherein each of the gripping portions holds the electric wires of each of the electric wire groups that go in three or more directions from the branch position of the electric wire group.   3. The wire harness according to claim 2, wherein the grip portion occupies a partial range of a tip of each of the long portions, and is a portion that holds the electric wire inside by being folded and bent.   The wire harness according to claim 3, wherein a tip portion of the long portion that forms the grip portion is further bent. The gripping part is
A bifurcated arm portion fixed to the tip of each of the long portions and having flexibility;
The engagement part which is formed in the tip of each of the forked arm part, and holds the forked arm part in a state where the electric wire is sandwiched between them by being hooked to each other. Wire harness.

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