JP2008137429A - Switch case connecting structure of wire harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the connecting work to a switch case and the installing work of the switch case by improving an excess length portion of a wire harness, and also to prevent interference sound due to fluttering of the excess length portion. <P>SOLUTION: The wire harness 10 is inserted in a switch mounting portion 18, and the wire harness 10 is fixed on an inner panel 21 by a clamp 22 on an insertion side in the switch mounting portion 18. The excess portion 11 extending from a fixed position to the base of the farthest connector 20c on the other side is provided. The excess length portion is folded at the base of the farthest connector 20c. A folded end is united by a fastening material 23 and retained in a folded state, and the connectors 20a to 20c are successively connected in a folded area. The excess length portion 11 extends by using the fixed position of the clamp 22 as a fulcrum, and is pulled out from an opening 19 of the switch mounting portion 18, when the connectors 20a to 20c of the wire harness 10 are fitted with connector fitting portions 16a to 16c of a switch case 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a switch case connection structure for a wire harness, and more specifically, a switch case fitted and fixed to a switch mounting portion formed integrally with a trim attached to a door panel of an automobile or the like, and routed along the door panel. The present invention relates to a connector connection structure with a wire harness.

  A switch for various devices such as a power window and an electric mirror is attached to a door trim attached to the interior side of a door panel of an automobile. As shown in FIGS. 5 (A) and 5 (B), these switches are provided by assembling a switch case 2 having switches for each device in the opening 1a of the switch mounting portion 1 provided in the door trim on the panel side. It has been. The wire harness W / H connected to the switch case 2 branches branch lines from the main line to each device, and the connectors 3a to 3c connected to the terminals of the branch lines are fitted and connected to the switch case 2.

Specifically, as shown in FIG. 5A, the wire harness W / H is pulled out from the opening 1a of the switch mounting portion 1 and the connectors 3a to 3c connected to the branch terminals of the wire harness W / H are switched. After fitting and connecting to the case 2, the switch case 2 is fitted and fixed to the opening 1 a of the switch mounting portion 1 as shown in FIG.
Therefore, the wire harness W / H requires the extra length portion 4 for pulling out from the opening 1a and connecting with the switch case 2.

However, since the wire harness W / H is fixed at one end by the clamp 5, the extra length portion 4 is used when the space in the switch mounting portion 1 is narrow or the distance L between the clamp 5 and the connector 3a is short. If the wire harness W / H cannot be sufficiently secured, the wire harness W / H cannot be sufficiently pulled out from the opening 1a, and the connection work with the switch case 2 cannot be performed.
Further, even when the necessary extra length can be secured, as shown in FIG. 5C, when the extra length portion 4 is not neatly stored in the switch mounting portion 1, the extra length portion 4 becomes an obstacle. There is a problem that the switch case 2 cannot be assembled, or that the extra length portion 4 vibrates during traveling to generate abnormal noise.

  Regarding the same problem, the present applicant has provided a wire harness provided with a telescopic mechanism as shown in FIGS. 6 (A), 6 (B) and 6 (C) in Japanese Patent Laid-Open No. 8-83516 (Patent Document 1). . That is, an extra length for expansion / contraction is provided on the branch line 7 of the wire harness 6 connected to the electrical component 8, the extra length portion is sequentially folded back with a certain dimension, the folded ends are bound with the tape T, and the folded branch line It is proposed that the substantially central portion in the length direction of 7 is bound with a temporary binding tape (not shown) to keep the folded state.

  Thus, when connecting the branch line 7 to the electrical component 8, the temporary binding tape is removed and the branch line 7 is pulled to open the branch line 7 in a continuous V shape with the binding point on the tape T as a fulcrum. 7 can be extended and pulled out of the electrical component mounting frame 9. On the other hand, when the electrical component 8 is assembled to the mounting frame 9, the branch line 7 is attached in a folded state with the tape T. Can be restored to an orderly folded state.

  However, according to this telescopic mechanism, a large space for accommodating the branch line 7 folded several times is required. Further, it is considered that the branch line 7 is fluttered in the folded state at the time of contraction, and there is room for improvement in terms of abnormal noise caused by contact between the branch line 7 and the vehicle body.

JP-A-8-83516

  The present invention has been made in view of the above-described problems, and allows the extra length portion of the wire harness to be pulled out and stored in an orderly manner, whereby the switch case can be easily assembled even when the space in the switch mounting portion is narrow. An object of the present invention is to provide a switch case connection structure for a wire harness capable of preventing abnormal noise due to fluttering of the extra length portion in the switch mounting portion.

In order to solve the above-mentioned problems, the present invention provides a switch mounting portion provided on the panel side, wherein a wire harness inserted from one end side is pulled out from the opening of the switch mounting portion, and a plurality of connectors connected to the wire harness are switched. A wire harness switch connection structure in which the switch case is fitted and fixed to the opening of the switch mounting portion after being fitted to the connector fitting portions of the case, respectively.
The wire harness is fixed on the insertion side of the switch mounting portion, and includes a surplus length portion extending from the securing position to the base of the farthest connector on the other end side, and the surplus length portion is connected to the farthest portion. Folded at the base of the connector, the folded end is bound with a fastening material and held in a folded state, and the connectors are sequentially connected to the folded region,
The extra length portion is a wire harness switch that is pulled out from the opening of the switch mounting portion with the fixed position on the insertion side as a fulcrum when the wire harness connector and the connector fitting portion of the switch case are fitted. A case connection structure is provided.

  In the connection structure, the extra length of the wire harness extends to the base of the farthest connector and is folded, and the folded portion is fastened with the fastening material. It is possible to secure a necessary and sufficient extra length for connection work with each connector and to make the wire harness's expansion and contraction locus constant.

  As a result, when connecting with the switch case, the connector connected to the wire harness terminal is pulled outside, and the folded portion of the wire harness opens and the extra length extends, so the wire from the opening of the switch mounting portion The harness can be pulled out sufficiently, and the connection work between the switch case and each connector can be easily performed. When the switch case is attached to the switch mounting part, it can be returned to the original folded state by pushing back the wire harness. Therefore, the extra length of the wire harness is neatly folded and stored in the switch mounting part. It can be easily assembled to the mounting part.

In particular, since the wire harness is folded only once, the wire harness can be folded in a compact and compact manner, so that the switch case can be easily assembled without being obstructed by the wire harness even when the space in the switch mounting portion is small. be able to. Further, the wire harness is folded down as described above, and the folded state is held by the fastening material, so that the wire harness in the switch mounting portion can be prevented from fluttering. Accordingly, interference between the wire harness and the panel can be prevented, and abnormal noise can be prevented.
Furthermore, since the number of binding sites by the fastening material is one, the member cost can be reduced and the labor of binding can be saved.

The switch mounting portion is provided integrally with a door trim to be mounted on the interior side of the door / inner panel of the automobile, and the switch case includes a switch for a power window.
Furthermore, the switch mounting portion can also be applied to a switch mounting portion for mounting a switch case of meter equipment, audio equipment, and other equipment attached to the instrument panel.

As the fastening material, a band or an adhesive tape is used.
As described above, when the folded end is firmly bound with the band or the adhesive tape, the folded state can be easily and reliably folded.

  Moreover, it is preferable that the protective sheet is wound around the extra length part of the said wire harness. Thereby, the flutter of the wire harness surplus part in a switch attachment part can be controlled, and abnormal noise generation | occurrence | production can be prevented more reliably.

  As the protective sheet, an adhesive sheet made of vinyl chloride is preferable from the viewpoint of cost. In addition, by using a sheet having an appropriate rigidity, when the wire harness is pulled out from the opening of the switch mounting portion, the winding portion of the protective sheet serves as a support, and the wire harness can be prevented from falling into the mounting portion. Connection workability can be improved.

As described above, according to the present invention, the wire harness is folded at the farthest connector root, and the folded end is bundled with a fastening material to hold the folded state, thereby connecting the connector and the switch case connected to the wire harness. The extra length necessary and sufficient for the connection work can be secured. In addition, the wire harness can be folded along a fixed locus, and the wire harness can be folded in an orderly manner when the switch case is assembled and stored in the switch mounting portion.
Therefore, the connection work between the wire harness and the switch case and the work of assembling the switch case to the switch mounting portion can be easily performed.

In addition, since the wire harness has only one folded portion, the wire harness can be folded low and the switch case can be used as the switch mounting portion without being disturbed by the wire harness even when the space in the switch mounting portion is small. Can be assembled.
Furthermore, since the fluttering of the extra length of the wire harness in the switch mounting portion can be prevented, the generation of abnormal noise due to contact between the wire harness and the panel can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a switch case connection structure for a wire harness according to a first embodiment of the present invention. In the present embodiment, the present invention is applied to a connection structure between a wire harness 10 routed to a side door of an automobile and a switch case 12 attached to the side door.

  The switch case 12 includes an electric mirror switch 13, a power window switch 14, and a door lock switch 15 on the upper surface, and connector fitting portions 16a to 16c are arranged in parallel on the lower surface side as shown in FIG. ing. As shown in FIG. 1, the switch case 12 is assembled to an opening 19 of a switch mounting portion 18 provided integrally with a door trim 17 of a side door.

  As shown in FIG. 3, the switch mounting portion 18 is formed by raising a part of the door trim 17 in a room-side shape in a U-shaped cross section, and the opening 19 is formed on the upper surface of the switch mounting portion 18. .

  The wire harness 10 branches branch lines 10a to 10c that go to the electric mirror, power window, and door lock, and connectors 20a to 20c are connected to the terminals of the branch lines 10a to 10c.

  As shown in FIGS. 2 and 3, the wire harness 10 is inserted into the switch mounting portion 18 from the front side of the vehicle along the inner panel 21 disposed outside the door trim 17. In the switch mounting portion 18, the wire harness 10 is fixed to the inner panel 21 with a clamp 22 on the insertion side (vehicle front side), while the switch case 12 assembled to the switch mounting portion 18 on the vehicle rear side. Among the connector fitting portions 16a to 16c, the surplus length portion 11 extends from the wire harness 10 insertion side to the position beyond the farthest connector fitting portion 16c, and the surplus portion 11 is left at the position beyond the connector fitting portion 16c. The long portion 11 is folded back 180 °, and the folded end is bound with an adhesive tape 23.

In the folded region of the extra length portion 11, the connector 20c is connected to the branch line 10c at a position closest to the folded end, and the connectors 20b and 20a are also sequentially connected toward the wire harness insertion side (vehicle front).
Specifically, in this folded region, the branch line 10b is longer than the branch line 10c, the branch line 10a is extended longer than the branch line 10b, and the connector 20b is connected to the branch line 10b, and the connector 20a is connected to the branch line 10a. Thereby, the extra length portion 11 is held in a state where it is folded back at the base of the farthest connector 20c from the wire harness insertion side, and the connectors 20a to 20c are connected to the connector fitting portions 16a to 16c of the switch case 12. It is juxtaposed at the corresponding position.
At the base of the connector 20b, the branch line 10b and the branch line 10a are bundled with an adhesive tape 24.

  An adhesive sheet 25 made of vinyl chloride having appropriate rigidity is wound around the extra length portion 11 in a region from the fixing position of the clamp 22 to the adhesive tape 23 binding position at the folded end.

When the wire harness 10 is connected to the switch case 12, as shown in FIG. 4, the wire harness 10 in a state where the folded end is bound with the adhesive tape 23 and the adhesive sheet 25 is wound around the extra length portion 11. Then, after inserting into the switch mounting portion 18 from the front side of the vehicle and fixing the wire harness 10 to the inner panel 21 with the clamp 22 on the insertion side, the connectors 20a to 20c are pulled out from the opening 19 of the switch mounting portion 18.
At this time, the extra length portion 11 is pulled together with the connectors 20 a to 20 c, and at the same time, the folded portion is opened in a V shape with the fixed position of the clamp 22 as a fulcrum, and is pulled out from the opening 19.
In this state, after the connectors 20a to 20c are sequentially fitted and connected to the switch case 12, the switch case 12 is fitted and fixed to the opening 19 of the switch mounting portion 18 while the extra length portion 11 is pushed into the switch mounting portion 18. To do.

  According to the above-described structure, when the wire harness 10 and the switch case 12 are connected, the extra length 11 is extended and pulled out from the opening 19, thereby sufficiently securing the pull-out length of the wire harness 10. The connection work of 20c and switch case 12 can be performed easily.

  Further, since the surplus length portion 11 is held in a folded state by the adhesive tape 23, when the switch case 12 is assembled, the surplus length portion 11 is always neatly arranged with a constant locus simply by pushing the surplus length portion 11 into the switch mounting portion 18. Can be folded and stored. In addition, the surplus length portion 11 has only one folded portion, and can be folded down in the switch mounting portion 18 as shown in FIG. 2, so that the surplus length portion 11 blocks the assembly space of the switch case 12. This can be prevented, and the assembly work of the switch case 12 can be easily performed.

  Further, in the switch mounting portion 18, one end side of the extra length portion 11 is fixed to the inner panel 21, and an adhesive sheet 25 is wound around the outer circumference of the extra length portion 11. It is possible to prevent the surplus length portion 11 from fluttering and to prevent the generation of abnormal noise at a low cost.

  Furthermore, since the pressure-sensitive adhesive sheet 25 wound around the surplus length portion 11 has an appropriate rigidity, the stretched state of the surplus length portion 11 can be maintained. When pulled out, the extra length portion 11 in the straightened state serves as a support, and the connectors 20 a to 20 c can be prevented from falling into the switch mounting portion 18 from the opening 19. Also from this point, the connection workability between the wire harness 10 and the switch case 12 can be improved.

It is a disassembled perspective view which shows the switch attachment part of the side door of a motor vehicle. It is connection structure explanatory drawing in the switch attachment part which concerns on 1st embodiment. It is the III-III sectional view taken on the line of FIG. It is explanatory drawing which shows the connection operation | work of a wire harness and a switch case. (A)-(C) are figures which show a prior art example and a problem. It is a figure which shows another prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wire harness 11 Extra length part 12 Switch case 18 Switch mounting part 19 Opening 20a-20c Connector 23 Adhesive tape (fastening material)
25 Adhesive sheet (protective sheet)

Claims (4)

After the wire harness inserted from one end side is pulled out from the opening of the switch mounting portion to the switch mounting portion provided on the panel side, and a plurality of connectors connected to the wire harness are respectively fitted to the connector fitting portions of the switch case , A wire harness switch connection structure in which the switch case is fitted and fixed to the opening of the switch mounting portion,
The wire harness is fixed on the insertion side of the switch mounting portion, and includes a surplus length portion extending from the securing position to the base of the farthest connector on the other end side, and the surplus length portion is connected to the farthest portion. Folded at the base of the connector, the folded end is bound with a fastening material and held in a folded state, and the connectors are sequentially connected to the folded region,
The extra length portion is a wire harness switch that is pulled out from the opening of the switch mounting portion with the fixed position on the insertion side as a fulcrum when the wire harness connector and the connector fitting portion of the switch case are fitted. Case connection structure.   2. The wire harness according to claim 1, wherein the switch mounting portion is provided integrally with a door trim to be mounted on the interior side of a door / inner panel of an automobile, and the switch case includes a switch for a power window. Switch case connection structure.   The switch case connection structure for a wire harness according to claim 1, wherein the fastening material is a band or an adhesive tape.   The switch case connection structure for a wire harness according to any one of claims 1 to 3, wherein a protective sheet is wound around the extra length of the wire harness.

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