JP2012165514A - Bending-state holding implement for flat wire, manufacturing method of flat wire harness, and flat wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate adjustment of a bending position to easily bend a flat wire for operation.SOLUTION: A bending-state holding implement 20 has a plurality of clip pieces 22 provided at intervals in parallel to each other, and a connection part 30 connected to one end of the clip pieces 22. The bending state of a flat wire can be maintained by clipping the vicinity of the bending point of the flat wire with the plurality of the clip pieces 22. In this state, the bending position of the flat wire can be adjusted by shifting the flat wire from between the plurality of the clip pieces 22.

Description

  The present invention relates to a technique for facilitating flat wire bending work.

  When manufacturing a flat wire harness, it is necessary to bend the flat electric wire into a predetermined bent state. Patent Document 1 discloses a length adjusting member for a flat wire harness used at this time. The length adjusting member includes a pair of sandwiching pieces for sandwiching the laminated flat wire harness, a support portion connected to one end of the pair of sandwiching pieces, and an adjustment rod protruding from both sides of the support portion. Then, the bent portion of the flat wire harness is positioned and held by inserting the refracted portion at the tip of the adjustment rod into the folded end of the flat wire harness.

JP-A-6-309940

  However, according to the length adjusting member disclosed in Patent Document 1, the folding position of the flat wire harness becomes a fixed position according to the length of the adjusting rod, and therefore adjusting the folding position of the flat wire harness is not possible. Have difficulty.

  Then, an object of this invention is to enable it to bend a flat electric wire easily, adjusting a bending position easily.

  In order to solve the above-mentioned problem, a folded state holder for a flat electric wire according to a first aspect is connected to a plurality of sandwiching pieces provided in parallel at an interval and one end of the sandwiching piece. A connected portion.

  A second aspect is a folded state holder for a flat electric wire according to the first aspect, wherein the plurality of sandwiching pieces are a pair of outer sandwiching pieces disposed on both outer sides in the parallel direction, And at least one intermediate sandwich piece disposed between the pair of outer sandwich pieces.

  A 3rd aspect is a bending state holding | maintenance tool for flat electric wires which concerns on the 1st or 2nd aspect, Comprising: It protrudes toward the front-end | tip part of these pinching pieces between these pinching pieces. Protruding parts are formed.

  A 4th aspect is a bending state holding | maintenance tool for flat electric wires which concerns on a 3rd aspect, Comprising: The said protrusion has a part where a height dimension becomes low sequentially toward the front-end | tip part of the said clamping piece. .

  A 5th aspect is a bending state holding | maintenance tool for flat electric wires which concerns on a 3rd or 4th aspect, Comprising: The said protrusion is low in height dimension toward the base end part of the said clamping piece sequentially. It has a part.

  Moreover, in order to solve the said subject, a 6th aspect is a manufacturing method of the flat wire harness containing the bent flat electric wire, Comprising: (a) While bending a flat electric wire, 1st-5th A step of maintaining the bent state of the flat electric wire by being sandwiched between the plurality of sandwiched pieces of the bent state holder for the flat electric wire according to any one aspect; and (b) a bent state. And a step of mounting a bent state fixing holder on the flat electric wire maintained.

  Moreover, in order to solve the said subject, the flat wire harness which concerns on a 7th aspect is a bending state holding | maintenance tool for flat electric wires which concerns on any one 1st-5th aspect, and these pinching pieces The flat electric wire bent in a state of being sandwiched therebetween, and a bent state fixing holder attached to the flat electric wire maintained in a bent state.

  According to the 1st aspect, the bending state of a flat electric wire is maintainable by pinching | intersecting the bending location vicinity part of a flat electric wire between several pinching pieces. Moreover, the bending position of a flat electric wire can be adjusted by moving so that a flat electric wire may be shifted from between several pinching pieces in this state. For this reason, it is possible to easily fold the flat electric wire while easily adjusting the bending position.

  According to the second aspect, between one outer sandwich piece and at least one intermediate sandwich piece, and between the other outer sandwich piece and at least one intermediate sandwich piece, each more reliably. The flat electric wire can be maintained, and the bending position can be easily adjusted by shifting the flat electric wire independently.

  According to the 3rd aspect, since the protrusion part which protrudes toward the front-end | tip part of these pinching pieces is formed between these pinching pieces, the flat maintained between the pinching pieces It is difficult for wires to fall off.

  According to the 4th aspect, a flat electric wire is easily pressed between several pinching pieces by pressing a flat electric wire to the part where height dimension becomes low sequentially toward the front-end | tip part of a pinching piece among protrusions. It can be arranged.

  According to the fifth aspect, the flat wire is easily pressed between the plurality of sandwiched pieces by pressing the flat wire against the portion of the protrusion that gradually decreases in height toward the base end of the sandwiched piece. The bent state holder can be removed.

  According to the 6th aspect, in a process (a), adjustment of the bending position of a flat electric wire can be easily performed by moving so that a flat electric wire may be shifted from between some pinching pieces. In this state, the flat wire including the bent flat electric wire can be easily bent by attaching the bent state fixing holder to the flat electric wire maintained in the bent state. A harness can be manufactured.

  According to the 7th aspect, the bending state of a flat electric wire is maintainable by pinching | interposing the bending location vicinity part of a flat electric wire between several pinching pieces. Moreover, the bending position of a flat electric wire can be adjusted by moving so that a flat electric wire may be shifted from between several pinching pieces in this state. For this reason, a flat wire harness can be easily bend | folded and a flat wire harness can be manufactured, adjusting a bending position easily.

It is a perspective view which shows the bending state holder for flat electric wires which concerns on embodiment. It is explanatory drawing which shows the example of a manufacturing process of the flat wire harness 10 using the bending state holder same as the above. It is explanatory drawing which shows the example of a manufacturing process of the flat wire harness 10 using the bending state holder same as the above. It is explanatory drawing which shows an example of the winding location of an adhesive tape. It is explanatory drawing which shows the other example of the winding location of an adhesive tape. It is a perspective view which shows the bending state holder for flat electric wires which concerns on a modification.

  Hereinafter, the manufacturing method of the flat wire harness which used the bending state holder for flat electric wires which concerns on embodiment, and the bending state holder is demonstrated. FIG. 1 is a perspective view showing a bent state holder 20, and FIGS. 2 and 3 are explanatory views showing an example of a manufacturing process of a flat wire harness 10 using the bent state holder.

  The bent state holder 20 is a member that temporarily or continuously maintains the flat electric wire 12 in a bent state.

  Here, the flat electric wire 12 is a strip-shaped wiring material having a plurality of core wires and a covering portion. The core wire is a linear conductive member such as copper, a copper alloy, aluminum, or an aluminum alloy. The plurality of core wires are usually arranged in a parallel state with an interval therebetween. The covering portion is a member formed of resin or the like, and insulates between the plurality of core wires and between the plurality of core wires and the outside. The flat electric wire 12 as described above may have a configuration in which a plurality of core wires arranged in parallel are sandwiched between a pair of insulating films, or a plurality of core wires arranged in parallel. Alternatively, the resin may be extrusion-coated.

  The flat wire harness 10 is a wiring material that is incorporated in a thin and flat wiring space such as a ceiling portion of a vehicle and connects various electrical components. The flat wire harness 10 is manufactured as a wiring material spreading in a plane including the bent flat electric wire 12 by appropriately bending the flat electric wire 12 as described above.

  The bent state holder 20 has a plurality of sandwiching pieces 22 and a connecting portion 30. In the present embodiment, the bent state holder 20 is formed as a resin molded product. As the resin, for example, milky white polybutylene terephthalate (PBT) can be used.

  That is, each sandwiching piece 22 is formed in a plate shape, here, a square plate shape. The length dimension in the width direction of the sandwiching piece 22 (projection dimension from the connecting portion 30) is preferably set to be the same as or larger than the width dimension of the flat electric wire 12 that is assumed to be sandwiched. Here, the length dimension of the sandwiching piece 22 in the width direction is set to a length dimension (for example, about 8 mm) obtained by adding the length dimension of the protrusion 23 described later to the width dimension of the flat electric wire 12. Yes. Further, the length dimension in the front-rear direction of each sandwiching piece 22 (length dimension in the extending direction of the sandwiched flat electric wire 12) is not particularly limited, but in a state of being in surface contact with the flat electric wire 12 It is preferably set to a certain size (for example, about 10 mm) so that the flat electric wire 12 can be sandwiched and maintained.

  It should be noted that the main folding state holder 20 is almost the same size as the flat electric wire 12 part to be attached as a whole so that the flat electric wire 12 to be attached can be easily incorporated into the existing part. Preferably there is.

  Here, three sandwiching pieces 22 are provided. More specifically, the plurality of sandwiching pieces 22 includes a pair of outer sandwiching pieces 22a disposed on both outer sides in the parallel direction, and one intermediate sandwiching member disposed between the pair of outer sandwiching pieces 22a. And a piece 22b. Below, when not distinguishing in particular a some pinching piece, it describes with the pinching piece 22, and when distinguishing with an outside pinching piece and an intermediate pinching piece, the outer pinching piece 22a, intermediate pinching It distinguishes and describes with the piece 22b. The flat electric wire 12 is sandwiched between the one outer sandwiching piece 22a and the intermediate sandwiching piece 22b and between the other outer sandwiching piece 22a and the intermediate sandwiching piece 22b.

  But the intermediate | middle pinching piece 22b may be abbreviate | omitted and the intermediate | middle pinching piece 22b may be provided with two or more. That is, two or four or more sandwiching pieces 22 may be provided in accordance with the bending form of the flat electric wire 12 to be sandwiched.

  Moreover, the one end part of the three clamping pieces 22 is connected with the connection part 30, and, thereby, the three clamping pieces 22 are maintained in the parallel state which opened the space | interval. In this state, the space between the other end portions of the three sandwiching pieces 22 opens outward.

  The three sandwiching pieces 22 may be in a positional relationship parallel to each other, or in a positional relationship in which they are inclined with respect to each other. In order to prevent the flat electric wires 12 sandwiched between the sandwiching pieces 22 from falling off, the plurality of sandwiching pieces 22 are directed toward each other toward the other end (that is, toward the opening side). It is preferable to be inclined. Here, the height dimension (for example, 5 mm) of the folded state holder 20 on the connecting portion 30 side is set to the height dimension (for example, 5 mm) on the other end side of the plurality of sandwiching pieces 22 of the folded state holder 20 ( For example, by setting it larger than 4 mm, the plurality of sandwiching pieces 22 are inclined toward each other toward the other end on the opening side.

  Further, the plurality of sandwiching pieces 22 are configured to be able to sandwich at least one flat wire 12 therebetween. A gap corresponding to the thickness of at least one flat wire 12 may be formed between the plurality of sandwiching pieces 22 in an initial state (that is, before the flat wire 12 is sandwiched), By sandwiching at least one flat wire 12 between the sandwiching pieces 22, the plurality of sandwiching pieces 22 are elastically deformed, and at least one flat wire 12 is sandwiched between the plurality of sandwiching pieces 22. The structure by which a clearance gap is formed may be sufficient.

  In addition, a protrusion 23 that protrudes between the plurality of sandwiching pieces 22 is formed at the tip of the plurality of sandwiching pieces 22. More specifically, a protrusion 23 is formed on the inward surface side of the distal end portion of the pair of outer sandwiching pieces 22a so as to project along the distal end side edge portion of the outer sandwiching piece 22a, and the intermediate sandwiching piece 22b. Protrusions 23 are formed on both sides of the front end portion of the front end portion so as to extend along the front end side edge of the intermediate sandwich piece 22b.

  Of the protrusion 23, the tip side portion of the sandwiching piece 22 is formed in a portion 23 a whose height dimension is gradually reduced toward the tip portion of the sandwiching piece 22. In other words, an insertion guide surface 23ga that is inclined outward in the gap of each sandwiching piece 22 toward the distal end side of the projection 23 is formed at the distal end portion of the sandwiching piece 22 in the projection 23. Yes. Thereby, when inserting the flat electric wire 12 between the pinching pieces 22, by pressing the side part of the flat electric wire 12 against the insertion guide surface 23ga of the protrusion 23, the pair of opposite pinching pieces 22 are expanded. Be able to.

  Moreover, the base end side part of the clamping piece 22 is formed in the part 23b from which the height dimension becomes low toward the base end part of the said clamping piece 22 among the protrusions 23. As shown in FIG. In other words, the removal guide surface 23gb which inclines outwardly of the clearance gap between each pinching piece 22 toward the base end side of the protrusion 23 in the base end side part of the pinching piece 22 among the protrusions 23. Is formed. Accordingly, when the flat electric wire 12 sandwiched between the pair of opposed sandwiching pieces 22 is pulled out from between the pair of sandwiching pieces 22, the side portion of the flat electrical wire 12 is removed from the guide surface of the protrusion 23. By pressing against 23 gb, the pair of opposing sandwiching pieces 22 can be expanded.

  The example of a manufacturing method of the flat wire harness 10 using the bending state holder 20 comprised as mentioned above is demonstrated.

  First, as shown in FIG. 2, a portion near the bent portion is sandwiched between the plurality of sandwiching pieces 22 while a portion where the flat electric wire 12 needs to be folded is folded. At this time, the side portion of the flat electric wire 12 is pressed against the insertion guide surface 23ga of the protrusion 23 while being pressed into the pair of opposing sandwiching pieces 22. Thereby, the flat electric wire 12 can easily get over the protrusion 23, and the flat electric wire 12 can be easily disposed inside the protrusion 23 in the gap between the sandwiching pieces 22. Thereby, the bending state of the flat electric wire 12 is maintained. However, depending on the bent state of the flat wire 12, the flat wire 12 may not be completely inserted into the gap between the sandwiching pieces 22 but may be sandwiched between the protrusions 23. However, by disposing the flat wire 12 inside the protrusion 23, the position of the flat wire 12 can also be regulated in the width direction.

  The flat electric wire 12 is bent for the purpose of bending along the wiring route, absorbing the extra length according to the route length, and the like. For this reason, as shown in FIG. 2, the bent state of the flat electric wire 12 includes various bent states such as a state where the flat wire 12 is folded so as to be folded back into a U-shape and a state where the flat wire 12 is folded so as to overlap in a Z-shape. Assumed and in any case, the present folded state holder 20 can be used.

  In this state, the flat electric wire 12 is only sandwiched between the plurality of sandwiching pieces 22, and the position is not regulated at all in other portions. In other words, the main bending state holder 20 is configured to simply hold the flat electric wire 12 before and after the bent portion of the flat electric wire 12 and holds the flat electric wire 12 in its longitudinal direction. It does not have the structure which controls positioning along. For this reason, when changing a bending location etc., the change of a bending state including the change of the said bending location can be easily performed by shifting the flat electric wire 12 from between the opposing clamping pieces 22. FIG. . In addition, when the marking M for bending position alignment is attached | subjected to the flat electric wire 12, you may adjust while seeing the said marking. And even after adjusting the bending state of the flat electric wire 12, since the flat electric wire 12 is the state pinched by the clamping piece 22, the said bending state is maintained with a certain amount of holding power.

  And as shown in FIG. 3, after adjusting the bending state of the flat electric wire 12 appropriately by the above, it is bent state in the flat electric wire 12 by which the bending state was temporarily maintained by the main bending state holder 20 Attach a fixed holder. In general, an adhesive tape 40 is used as the bending state fixing holder, and the adhesive tape 40 is bent around the flat electric wire 12 by winding the adhesive tape 40 around the bent portion of the flat electric wire 12. Attach to the place. Thereby, the flat electric wire 12 will be in the state by which the bending state was maintained more reliably. As the bent state fixing holder, various configurations that can more reliably maintain the bent state of the flat electric wire 12 using other lock mechanisms or the like can be employed.

  At this time, the bent state holder 20 may be removed, or may be attached to the flat wire 12 as it is without being removed.

  When removing the bent state holder 20, the bent state holder 20 may be removed during the winding operation of the adhesive tape 40, or the bent state holder 20 of the flat wire 12 is attached. The adhesive tape 40 may be wound around the front and rear portions excluding the place, and then the bent state holder 20 may be removed.

  When the bent state holding tool 20 is removed, by pressing the side portion of the flat electric wire 12 against the removal guide surface 23gb of the projection 23, the sandwiching piece 22 is elastically deformed in the direction of easy opening. For this reason, the removal operation | work of the bending state holder 20 can be performed easily.

  When the folded state holder 20 is not removed, the adhesive tape 40 may be wound around the portion of the flat wire 12 including the attachment location of the folded state holder 20. In this case, as shown in FIG. 4, the adhesive tape 40 may be wound only on the bent state holder 20 portion, or as shown in FIG. 5, the adhesive tape 40 is bent. You may wind around the flat electric wire 12 of the front-and-back periphery part containing. Which method is used to wind the adhesive tape 40 is determined in accordance with a user's design instruction or the like based on the winding holding strength, the layout convenience of the location, and the like. As a result, the folded state holder 20, the flat electric wire 12 bent in a state of being sandwiched between the plurality of sandwiching pieces 22, and the bent state attached to the flat electric wire 12 in which the bent state is maintained. The flat wire harness 10 provided with the adhesive tape 40 as a fixed holder is manufactured.

  According to the bent state holder 20 configured as described above, the bent state of the flat wire 12 is maintained by sandwiching the vicinity of the bent portion of the flat wire 12 between the plurality of sandwiching pieces 22. be able to. Moreover, the bending position of the flat electric wire 12 can be adjusted by moving the flat electric wire 12 so as to be shifted from between the plurality of sandwiching pieces 22 in this state. For this reason, the flat electric wire 12 can be easily bent while adjusting the bending position easily.

  Further, the flat electric wire 12 can be more securely sandwiched and maintained between the pair of outer pinching pieces 22a and the intermediate pinching pieces 22b, respectively, and the flat electric wires 12 can be independently maintained between them. It is easy to adjust the folding position by shifting.

  Moreover, since the protrusion 23 is formed in the front-end | tip part of the clamping piece 22, the flat electric wire 12 clamped and maintained between the clamping pieces 22 is hard to drop | omit.

  Moreover, since the side part of the flat electric wire 12 can be pushed into the pair of opposed sandwiching pieces 22 while pressing the insertion guide surface 23ga of the protrusion 23, the flat electric wire 12 can be easily inserted between the sandwiching pieces 22. It can be arranged.

  Contrary to the above, by pressing the side portion of the flat electric wire 12 against the removal guide surface 23gb of the protrusion 23, the flat electric wire 12 can be easily pulled out from between the sandwiching pieces 22 and the bent state holder 20 Removal work can be done easily.

  In addition, by using the bent state holder 20, the bent position of the flat electric wire 12 is temporarily maintained while the bending position is adjusted, and then the bent state fixing holder such as the adhesive tape 40 is mounted. The flat wire harness 10 including the flat electric wire 12 bent at an appropriate position can be easily manufactured.

  In addition, in the said embodiment, although the bending state holder 20 was manufactured with the resin molded product, it is not necessarily required. For example, as in the folded state holder 120 shown in FIG. 6, a strip-shaped metal piece formed of a stainless steel plate or the like is bent into a W shape when viewed from the side, and the bent portions at both ends are the outer sandwiched pieces 22a. The intermediate sandwich piece 122b may correspond to the intermediate sandwich piece 22b, and the intermediate U-shaped bent portion may be the outer sandwich piece 122a corresponding to the intermediate sandwich piece 22b. In this case, the distal end portion of the outer sandwiching piece 122a may be rounded. Thereby, the damage to the flat electric wire 12 by the outer side clamping piece 122a can be suppressed. Moreover, it is good to bend the front-end | tip part of the outer side clamping piece 122a inward. Accordingly, it is possible to suppress the flat electric wire 12 from coming off from between the outer sandwiching piece 122a and the intermediate sandwiching piece 122b.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Flat wire harness 12 Flat electric wire 20, 120 Bending state holder 22 Clamping piece 22a, 122a Outer clamping piece 22b, 122b Intermediate clamping piece 23 Protruding part 23ga Insertion guide surface 23gb Removal guide surface 30 Connection part 40 Adhesion tape

Claims (7)

A plurality of sandwiching pieces provided in parallel at intervals; and
A connecting portion connected to one end of the sandwich piece;
A folded state holder for flat electric wires. A bent state holder for a flat electric wire according to claim 1,
The plurality of sandwiching pieces are:
A pair of outer sandwiching pieces disposed on both outer sides in the parallel direction; and
At least one intermediate sandwich piece disposed between the pair of outer sandwich pieces;
A folded state holder for flat electric wires. A bent state holder for a flat electric wire according to claim 1 or 2,
A bent state holder for a flat electric wire, wherein protrusions projecting between the plurality of sandwiching pieces are formed at the tip portions of the plurality of sandwiching pieces. A bent state holder for a flat electric wire according to claim 3,
The protrusion has a bent state holder for a flat electric wire, having a portion whose height dimension is gradually reduced toward the tip of the sandwich piece. A bent state holder for a flat electric wire according to claim 3 or claim 4,
The said protrusion part is a bending state holding | maintenance tool for flat electric wires which has a part where a height dimension becomes low sequentially toward the base end part of the said clamping piece. A method of manufacturing a flat wire harness including a bent flat electric wire,
(A) While bend | folding a flat electric wire, by pinching | interposing between the said several pinching pieces of the said bending state holder for flat electric wires as described in any one of Claims 1-5, Maintaining the bent state of the flat wire;
(B) attaching the bent state fixing holder to the flat electric wire in which the bent state is maintained;
A method of manufacturing a flat wire harness comprising: A bent state holder for a flat electric wire according to any one of claims 1 to 5,
The flat electric wire bent in a state of being sandwiched between the plurality of sandwiching pieces;
A bent state fixing holder attached to the flat electric wire in which the bent state is maintained;
A flat wire harness.

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