JP4770414B2 - Electric wire holder for branch and method of manufacturing wire harness having branch portion - Google Patents

Description

  The present invention relates to a branch wire holder and a method of manufacturing a wire harness having a branch portion, and more specifically, a binding band is fastened and fixed together with a clip to a branch portion of a wire harness that branches in a substantially T shape by a simple operation. It is possible.

2. Description of the Related Art Conventionally, there are many locations where branch lines branch from a trunk line in a wire harness routed in an automobile, and a wire group is wound with a tape so that the branch position does not shift. The bundling of the branch portions is performed in a state in which the electric wire bundle is arranged on the electric wire holder erected on the wire harness assembly work table. The adhesive tape for bundling these wire bundles is the position where the branch line branches from the main line, and when the wire bundle is held between the support rods of the wire holder, the support rod becomes an obstacle and the adhesive tape is turned into the wire bundle. I can't wind it.
Therefore, the adhesive tape is wound in a state where the electric wire holder is lowered and the electric wire bundle is removed from the electric wire holder. As described above, the operation of winding the adhesive tape in the branching portion requires skill, the binding state is likely to vary depending on the skill level of the operator, and the wire harness has many branching positions, and it takes time. There's a problem. In addition, since the wire bundle is taken out from the wire holder when the adhesive tape is wound around the branch portion, there is a problem that the branch position where the adhesive tape is wound is likely to be displaced, and the position accuracy of the branch portion is lowered.

In view of this, the present applicant provides a branch unit binding method in which Japanese Patent Application Laid-Open No. 2005-27463 (Patent Document 1) provides a method of binding and fixing a branch unit with a general-purpose binding band instead of tape winding. In this bundling method, as shown in FIGS. 9 (A) and 9 (B), first, an electric wire is routed through an electric wire holder 2 erected on the assembly work table 1 of the wire harness. The branch line Wb is branched in a T-shape from the main line Wa through the wire holding rods 2a, 2b, 2c provided. Next, the pair of binding bands 3A and 3B are wound around the trunk line Wa on both sides of the branch line Wb in a state where the wire bundle W of the branch portion P is not taken out from the wire holder 2 with respect to the wire bundle W. Thereafter, the leading ends of the binding bands 3A and 3B are crossed, inserted into the locking portions 3a and 3b provided at the bases of the other binding bands 3A and 3B, and locked to the branch point P of the wire bundle W. The binding bands 3A and 3B are crossed in a hooked state at the corresponding positions and fastened. The binding bands 3A and 3B are inserted into a separate auxiliary member 4 for holding the base portions of the binding bands at a constant interval, thereby improving workability.
When the clip 5 is fixed at the branch point P, as shown in FIG. 9C, a separate auxiliary member 6 having the clip 5 is inserted and held in both the binding bands 3A and 3B. Thus, the clip 5 can be fixed near the branch point P.

JP 2005-27463 A

As described above, according to the method shown in FIGS. 9A and 9B, a general-purpose binding is performed while maintaining the holding state of the branch point P of the wire bundle W held by the wire holder 2. The bands 3A and 3B can be used for binding. However, in order to wind the binding bands 3A, 3B around the branch point P, it is necessary to perform the winding work inside the wire holding bars 2a, 2b, 2c while being careful not to wind the wire holding bars 2a, 2b, 2c. Since the work is performed while securing the space for inserting the binding bands 3A and 3B by moving the branch line Wb toward the center, the work procedure becomes complicated, and it is difficult to position the tightening position with high accuracy. There is a problem.
In addition, in the T-shaped branch form, if the base of the branch line Wb swells, it interferes with other members when the wire harness is attached to the vehicle body, or an extra length is generated in the routed wire. It is preferable to bind the positions close to both sides of the base with the binding bands 3A and 3B. For this reason, in the conventional example, the auxiliary member 4 is used to prevent the spacing positions of the binding bands 3A and 3B during the binding operation from expanding. However, since a separate member is required, the cost increases and the binding band 3A. There is a problem that 3B must be inserted through the auxiliary member 4 in advance.
Furthermore, according to the method shown in FIG. 9C, the clip 5 can be attached near the branch point P. In this case, a separate auxiliary component 6 is separately required, and the center position of the branch point P is required. If the clip 5 can be attached to the vehicle body, when the wire harness is attached to the vehicle body, the wire harness can be stably fixed at a small number of points. However, in the above method, there is no means for positioning the attachment position of the clip 5, There is a problem that it is difficult to attach the clip to a position that exactly matches the point.

  The present invention has been made in view of the above-described problems, and uses a general-purpose binding band and clip for a substantially T-shaped branch portion in a state of being held by an electric wire holder by a simple operation without requiring skill. It is an object of the present invention to provide a method of manufacturing a wire harness having a branching wire holder and a branching portion that can be bound in a state of being accurately positioned with respect to a predetermined binding position.

In order to solve the above-mentioned problem, in the present invention, an electric wire receiving portion for holding the electric wire bundle of the branch portion that branches in a substantially T shape by branching the branch line in the direction substantially perpendicular to the main line from the middle of the main line; , A branching electric wire holder composed of a support for erecting the electric wire receiving portion on the assembly work table of the wire harness,
The wire receiving portion includes a branch line side arm portion disposed on both sides of the branch line at a branch point, and a trunk line side arm portion disposed opposite to the branch line side arm portion across the trunk line, the trunk line side arm portion. And the branch line side arm part as a branch line support part, and the gap part between the branch line arm parts as a branch line support part. The trunk line side arm part is supported by the main line support part. Provided with a clip holding portion capable of fitting and holding a clip to be fixed to a side surface of the trunk line, and guiding a guide groove while bending the binding band in a U shape from the clip holding portion to the inner surface of each of the branch line side arm portions. Each guide groove is formed in a guide track that passes below the trunk line so as not to interfere with the bundle of electric wires of the trunk line supported by the trunk line support part, and passes through the insertion hole of the clip to be held in the clip part. Forming along It provides a branching wire holder according to claim.

  If it does in this way, the clip which should be attached to the predetermined position of a main line is arranged and positioned with respect to the electric wire bundle currently held in the shape of a branch of the shape of a letter T by the support part between each arm part of an electric wire receiving part. Each binding band can be arranged in a state of passing through the insertion hole of the clip only by inserting the binding band from the insertion hole of this clip along the track of the guide groove of each branch line side arm portion. Accordingly, the clips can be positioned and fixed with respect to the predetermined position of the branch point at the same time as the binding bands are tightened.

The clip holding part includes a guide part that guides the clip in a detachable manner along a direction corresponding to a direction of taking out the main line supported by the main line support part.
According to this structure, the clip can be accurately fitted and held at a predetermined position where the clip is to be attached only by mounting the clip along the guide portion, and the electric wire after being fixed by the binding band. At the time of taking out the bundle, the clip fixed to the wire bundle can be smoothly removed from the wire receiving portion together with the wire bundle.

In addition, the clip holding part includes a positioning part that regulates positions of both sides and a lower part of the tray part in the clip in order to fix the clip at a predetermined position with respect to the main line supported by the main line support part.
In this way, since the positioning in the width direction and the height direction is fixed with respect to the plate portion in the clip, it is possible to prevent the clip from being displaced during the operation and to improve the positioning accuracy of the clip.

Moreover, in another invention, when manufacturing the wire harness which has a branch part using the said electric wire holder for branching, after fitting and holding a clip in the said clip holding part, it is in the trunk line support part of the said electric wire receiving part. Constructing a substantially T-shaped branch part so as to branch the electric wire along and branch a part of the wired electric wire to the branch line support part side,
Next, the front end side of the binding band is inserted into the insertion hole of the clip held by the clip holding portion, and sequentially inserted toward the one branch line side arm portion along the guide groove, and protrudes from the branch line side arm portion. The distal end portion of the binding band is inserted into the locking portion of the base end portion and tightened. Similarly, another binding band is sequentially inserted from the insertion hole of the clip toward the other branch side arm portion, and the branch side arm is inserted. Each binding band is tightened in a substantially V-shape toward the clip with respect to the trunk line at the substantially T-shaped branch by inserting and tightening the distal end portion of the binding band protruding from the portion into the locking portion of the base end portion A method of manufacturing a wire harness having a branching portion is provided, wherein the clip is fixed to a side surface portion of the trunk line while being fixed.

  If it does in this way, each branch line arranged on both sides of the branch line arranged through the insertion hole of the arranged clip only by preliminarily fitting and arranging the clip in the clip holding part provided on the main line side arm part The clip can be positioned and fixed with high accuracy with respect to the branch point of the wire bundle held by the wire receiving portion at the same time as the side arm portion is inserted and tightened along the guide groove. Further, since the binding band is fastened and fixed in a substantially V-shape centered on the clip with respect to the substantially T-shaped branch portion, the substantially T-shaped branch form does not swell or the clip does not shift. . Therefore, the clip and the binding band can be easily and securely fastened and fixed to the required position of the branch portion while the wire bundle is held in the wire receiving portion.

As is clear from the above description, according to the branching wire holder of the present invention, a general purpose wire bundle held in a wire receiving part as a branching part of the wire harness in a substantially T-shaped branching form is used. With the clip positioned at a predetermined position, it is possible to guide the binding band that combines the binding of the branch portion and the fixation of the clip along a predetermined track. Therefore, the clip and the binding band can be accurately arranged with respect to the branch portion by a simple operation without removing the electric wire bundle from the electric wire holder and using a general-purpose clip and the binding band.
In addition, according to the method of manufacturing a wire harness having a branch portion, the clip can be accurately positioned and fixed at a predetermined position on the main line simultaneously with the fastening by the binding band with respect to the branch portion supported in a substantially T shape. The workability can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show an embodiment of an electric wire holder for branching. The electric wire holder 10 branches a branch line Wb from the middle of the main line Wa in a direction substantially perpendicular to the main line Wa in the assembly process of the wire harness. This is used to hold the branch portion A of the wire bundle that branches into a substantially T shape, and to arrange the binding bands B1 and B2 and the clip C that are bound to the trunk line Wa of the branch portion A. The electric wire holder 10 includes a metal support 12 having an electric wire receiving portion 11 made of a synthetic resin for receiving and holding a bundle of wires to be wired at the upper end, and the support 12 is a predetermined part of the assembly work table T of the wire harness. It is comprised from the attaching part 18 which consists of a volt | bolt and a nut for attaching and fixing to a position.

  The wire receiving portion 11 is unevenly distributed on the side of the branch line Wb with respect to the center position of the base portion 11a corresponding to the branch point P in order to guide the wire bundle routed to the branch portion A of the wire harness in the required direction and is wired. The two branch line side arm portions 13A, 13B that are erected on both sides of the branch line Wb and the branch line side arm portions 13A, 13B across the trunk line Wa to be wired. The main line side arm portion 13C is arranged. And the trunk line support part 14A which receives the trunk line Wa wired in the branch part A and supports the groove-shaped clearance gap part comprised between the branch line side arm parts 13A and 13B and the trunk line side arm part 13C which oppose. 14B, and a groove-like gap portion formed between the branch line side arm portions 13A and 13B is used as a branch line support portion 14C. The main line side arm portion 13C is formed wide, and a clip holding portion 20 for fitting and holding the clip C is provided at the center portion thereof.

  The base end portions 14a, 14b, 14c of the trunk line support portions 14A, 14B and the branch line support portion 14C are portions that regulate the support positions in the height direction of the trunk line Wa and the branch line Wb to be wired. In addition, the electric wire receiving part 11 is provided with the internal thread part 15 corresponding to the external thread part 12a formed in the upper end of the support | pillar 12 so that it can attach or detach with respect to the support | pillar 12, and can respond | correspond to the thing of various shapes.

  Here, the general-purpose clip C used in the present invention is, as shown in FIGS. 3A to 3C, a base portion Cb in which an insertion hole Ca is formed through which binding bands B1 and B2, which will be described later, are inserted. And a fixing portion Cd provided with a locking claw Cc for fitting and locking to a locking hole of the vehicle body, and a dish portion Ce formed at an intermediate portion between the base portion Cb and the fixing portion Cd. It is composed of Further, as shown in FIGS. 4 (A) to 4 (C), the general-purpose binding bands B1 and B2 are arranged at the attachment position of the clip C from the both sides of the branch line A to the outer periphery of the trunk line Wa and the branch line Wb. It consists of a band main body Ba having a length sufficient to bind in a substantially V-shape and a locking portion Bb provided at one end. The inner surface of the band main body Ba is provided with a locking groove Bd for locking with the locking claw Bc of the locking portion Bb to form a latch mechanism.

  As shown in FIGS. 2A to 2C, the clip holding portion 20 is formed at the center portion of the trunk side arm portion 13 </ b> C, and corresponds to the vertical direction, that is, the direction corresponding to the attachment / detachment direction of the wire bundle with respect to the wire receiving portion 11. If the clip C can be attached and detached correspondingly, it comprises a guide portion 21 and a positioning portion 22 that positions and holds the clip C at a predetermined position. The guide portion 21 includes an opening portion 21a that opens from the central upper end portion of the main line side arm portion 13C toward the lower base portion. The opening 21a is set to a width that can be guided according to the width dimension of the base portion Cb and the fixing portion Cd of the clip C. The opening 21 a also has a function as an opening for work when the tips of the binding bands B <b> 1 and B <b> 2 are inserted into the insertion hole Ca of the clip C held by the clip holding unit 20. Guide grooves 21b are formed on both side surfaces of the opening 21a to guide the plate portion Ce so as to be slidable vertically from both the inner and outer sides in accordance with the width and thickness of the plate portion Ce of the clip C. On the outer surface side of the groove 21b, a window portion 21c is formed by opening over a substantially half region from the upper end, leaving a region sufficient to hold the clip C in the lower portion. In the region where the window portion 21c is formed, the plate portion Ce of the clip C is free to be held on the outer side, and the operability can be improved when the clip C is attached to the guide groove 21b.

  The positioning portion 22 is continuously formed in the guide grooves 21b on both sides at the lower end of the opening 21a in order to position the clip C held by the clip holding portion 20 at the center position with respect to the side surface of the trunk line Wa. It comprises a step portion 22a that abuts and supports the lower side of Ce to restrict the position in the vertical direction, and a guide groove 21b that regulates the position in the width direction.

  The inner side portions of the branch side arm portions 13A and 13B and the main line side arm portion 13C are bent in a U shape from the lower side of the clip holding portion 20 to the inner surfaces of the branch side arm portions 13A and 13B. Guide grooves 16a and 16b for guiding are respectively formed. The guide grooves 16a and 16b guide the binding bands B1 and B2 in a substantially V shape in a plan view from the insertion hole Ca of the clip C held by the clip holding part 20 toward the branch line side arm parts 13A and 13B on both sides. Like to do. The guide grooves 16a and 16b are formed in a concave cross section substantially corresponding to the width dimension of the binding bands B1 and B2 to be guided and formed deeper than the thickness dimension.

Moreover, the guide grooves 16a and 16b are formed along the track | route which passes outside lower than the outer periphery so that it may not interfere with the outer periphery of the trunk line Wa hold | maintained at the electric wire holder 10, and the branch line Wb. That is, the lower end positions of the guide grooves 16a and 16b of the binding bands B1 and B2 from the height positions of the base ends 14a, 14b, and 14c of the main line support portions 14A and 14B and the branch line support portion 14C that support the main line Wa and the branch line Wb. The dimension is set so that becomes lower.
As shown in FIG. 2A, the branch line side arm portions 13A and 13B in which the guide grooves 16a and 16b are formed have the guide tracks of the guide grooves 16a and 16b held by clips of the main line side arm portion 13C as viewed from above. It arrange | positions in the state inclined inward so that it might become a substantially V shape toward the center of the part 20. As shown in FIG. By arranging in this way, when the binding bands B1 and B2 are tightened to the branch portion A, the binding bands B1 and B2 can be guided so as to bite into the bending point from the main line Wa to the branch line Wb. A substantially V-shaped stable tightening state centering on the clip C can be ensured.

Next, the manufacturing process of the wire harness which has the branch part A branched in three directions of substantially T shape using the electric wire holder 10 which consists of the said structure is demonstrated.
First, when wiring an electric wire along a U-shaped ordinary electric wire holder (not shown) erected along the wiring path on the assembly work table T of the wire harness, it corresponds to the branch point P A branching electric wire holder 10 is erected at a position where the clip C is placed, and the clip C is placed on the base Cb with respect to the clip holding portion 20 of the electric wire receiving portion 11 as shown in FIGS. Is mounted so that the fixed portion Cd faces the outside and the insertion hole Ca faces the vertical direction. At that time, the base portion Cb of the clip C is inserted into the opening portion 21a of the guide portion 21, and the plate portion Ce is made to follow the guide groove 21b from the window portion 21c side so as to face the positioning portion 22 below the upper end portion. Clip C is inserted. Then, the clip C moves further downward while being held in a state where both the inner and outer surfaces and both side surfaces of the plate portion Ce are sandwiched from a position midway through the window portion 21c, and is moved to the step portion 22a of the positioning portion 22. When the lower part of the part Ce comes into contact, it is fitted and held at a predetermined position.

  Then, as shown in FIGS. 6A and 6B, the trunk line Wa is routed in a straight line so as to be locked over the trunk line support portions 14A and 14B, and the branch line Wb to be branched from the trunk line Wa is a branch point. In P, wiring is performed in a direction substantially perpendicular to the trunk line Wa, and is locked to the branch line support portion 14C. In this way, the branch portion A is formed in which the branch line Wb branches in a substantially T shape with respect to the trunk line Wa.

  Next, as shown in FIG. 7A, the distal end side of one binding band B1 is inserted into the insertion hole Ca of the clip C held by the clip holding portion 20, and one branch side along the guide groove 16a. The binding band B1 is sequentially inserted toward the arm portion 13A. Next, as shown in FIG. 7B, the distal end portion of the binding band B1 protruding from the upper end portion of the branch line side arm portion 13A is connected to the locking portion Bb of the proximal end portion as shown in FIG. Insert and tighten. Next, similarly, the other binding band B2 is sequentially inserted toward the other branch side arm 13B through the insertion hole Ca of the clip C, and the protruding tip is inserted into the locking portion Bb and fixed. The tightened binding bands B1 and B2 are further tightened with a tension cutting tool as necessary, and the excess tip portion is cut. In this way, as shown in FIG. 8B, the binding band B1 is formed in a substantially V shape toward the insertion hole Ca of the clip C arranged at the center position from both sides of the branch line Wb with respect to the trunk line Wa of the branch portion A. , B2 can be fastened and fixed, and at the same time, the clip C can be accurately attached to a predetermined position at the center of the side surface of the trunk line Wa. For this reason, by tightening the binding band B1, the base portion of the branch line Wb can be prevented from bulging and a branch path as designed can be obtained, and interference with other members at the time of attachment to the vehicle body and the wires constituting the wire harness can be spared. It is possible to prevent the occurrence of length. In addition, the binding bands B1 and B2 are arranged at fixed positions with respect to the branch portion A in a state where the trunk line Wa and the branch line Wb are supported by the trunk line support portions 14A and 14B and the branch line support portion 14C without lifting the trunk line Wa and the branch line Wb from the electric wire holder 10. Can be tightened.

As described above, by using the branching electric wire holder 10, the general-purpose clip C and the binding bands B1 and B2 are used, and the branching portion A is obtained by an independent normal fastening operation of the binding bands B1 and B2. The clip C can be fixed at a predetermined position at the center of the side surface of the trunk line Wa at the same time that the binding bands B1 and B2 are tightened to adjust the form of the branching section A. Further, it is necessary to lift the trunk line Wa and the branch line Wb wired to the electric wire holder 10 while being supported by the trunk line support parts 14A and 14B and the branch line support part 14C until the fastening operation by the binding bands B1 and B2. Therefore, the position of the branch point P due to the pulling of the wire bundle is not generated, and the wire harness having the branch portion A with high positioning accuracy with respect to the branch point P can be manufactured by a simple operation.
Further, when the wire bundle is taken out from the wire receiving portion 11 upon completion of the assembly of the wire harness, the clip C is moved along the guide groove 21b following the upward take-out operation along the standing direction of the wire holder 10. Can be removed from the clip holding part 20 without difficulty.

  In the above embodiment, the example of using a synthetic resin that is slippery when the binding band is inserted is shown as the material of the wire receiving portion. However, other materials such as a metal may be used. In the above embodiment, the procedure for inserting and fastening the two binding bands one by one into the guide grooves 16a and 16b has been described. However, the two fastening bands are inserted into each arm portion and then the respective fastening operations are performed. You may do it. In the above-described embodiment, an example in which the wire receiving portion can be attached to and detached from the support column has been shown, but it may be integrated.

It is a perspective view of an embodiment of an electric wire holder for branch of the present invention. (A) is a top view of an electric wire receiving part, (B) is a front view, (C) is XX sectional drawing. The clip used with a binding band is shown, (A) is a front view, (B) is a side view, (C) is a top view of the state which penetrated the binding band. (A) is a front view of a binding band, and (B) is a side view. The manufacturing method of the wire harness which has a branch part is shown, (A) is a front view of the state which hold | maintained the clip in the clip holding | maintenance part of an electric wire receiving part, (B) is a top view. The trunk line to a wire receiving part and the wiring process of a branch line are shown, (A) is a front view, (B) is a top view. (A) (B) is sectional drawing which shows the binding process using a binding band. (A) is sectional drawing which shows the fastening operation using a binding band, (B) has shown the top view of the state which fastened and fixed the binding band in the substantially V shape with respect to the branch part. (A)-(C) are figures which show a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electric wire holder 11 Electric wire receiving part 12 Support | pillar 13A, 13B Branch line side arm part 13C Main line side arm part 14A, 14B Main line support part 14C Branch line support part 16a, 16b Guide groove 20 Clip holding part 21 Guide part 21b Guide groove 22 Positioning part A Branch part B1, B2 Binding band Bb Locking part C Clip Ca Insertion hole Ce Dish part Wa Trunk line Wb Branch line P Branch point

Claims (4)

An electric wire receiving part for holding a bundle of electric wires at a branching portion that branches in a substantially T-shape by branching a branch line in a direction substantially perpendicular to the main line from the middle of the main line, and an assembly work for the wire harness. A branching electric wire holder comprising a column for standing on a table,
The wire receiving portion includes a branch line side arm portion disposed on both sides of the branch line at a branch point, and a trunk line side arm portion disposed opposite to the branch line side arm portion across the trunk line, the trunk line side arm portion. And the branch line side arm part as a branch line support part, and the gap part between the branch line arm parts as a branch line support part. The trunk line side arm part is supported by the main line support part. Provided with a clip holding portion capable of fitting and holding a clip to be fixed to a side surface of the trunk line, and guiding a guide groove while bending the binding band in a U shape from the clip holding portion to the inner surface of each of the branch line side arm portions. Each guide groove is formed in a guide track that passes below the trunk line so as not to interfere with the bundle of electric wires of the trunk line supported by the trunk line support part, and passes through the insertion hole of the clip to be held in the clip part. Forming along Branch wires holder characterized.   The branching wire holder according to claim 1, wherein the clip holding part includes a guide part that removably guides the clip along a direction corresponding to a direction of taking out the main line supported by the main line support part.   The clip holding part includes a positioning part that regulates positions of both sides and a lower part of the dish part in the clip in order to fix the clip at a predetermined position with respect to the main line supported by the main line support part. The branch wire holder according to claim 2. A method of manufacturing a wire harness having a branch portion using the branch wire holder according to any one of claims 1 to 3,
After fitting and holding the clip in the clip holding part, the electric wire is wired along the trunk line supporting part of the electric wire receiving part, and a part of the wired electric wire is branched to the branch line supporting part side. Consists of a substantially T-shaped branch,
Next, the front end side of the binding band is inserted into the insertion hole of the clip held by the clip holding portion, and sequentially inserted toward the one branch line side arm portion along the guide groove, and protrudes from the branch line side arm portion. The distal end portion of the binding band is inserted into the locking portion of the base end portion and tightened. Similarly, another binding band is sequentially inserted from the insertion hole of the clip toward the other branch side arm portion, and the branch side arm is inserted. Each binding band is tightened in a substantially V-shape toward the clip with respect to the trunk line at the substantially T-shaped branch by inserting and tightening the distal end portion of the binding band protruding from the portion into the locking portion of the base end portion A method of manufacturing a wire harness having a branch portion, wherein the clip is fixed to a side surface portion of the trunk line while being fixed.

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