JP2005312177A - Mounting method of flat wiring material and wiring module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of mounting components and to simplify the mounting work of a flat wiring material. <P>SOLUTION: A band-like part 14 of an FPC harness 5 is deflected, a pair of side edges 15, 16 of a support member 2 are engaged with a pair of ribs 21, 22, then a projection 23 is inserted into the mounting hole 17 of the FPC harness 5, and the FPC harness 5 is thereby fixed to the support member 2. The FPC harness 5 is specified to move in the rotating direction of the thickness direction (Z direction) of the FPC harness 5 and at a mounting hole 24 as a center by the ribs 22, 23, and specified to move in the planar direction (XY direction) of the FPC harness 5 by the projection 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for attaching a flat wiring material such as a flexible printed circuit board (FPC) harness used for automobiles and various electronic devices to a panel and the like, and a wiring module employing such a mounting method.

  In recent years, flat wiring materials such as flexible, thin, and light weight FPC harnesses have begun to be used in place of wire harnesses used for wiring between electric parts of automobiles in order to save space. When such a flat wiring material is used in an automobile, it is supported by a door trim module, a console panel, a center console box or the like (hereinafter referred to as a “support member”). And when such a flat wiring material is fixed to the above support members, it is normally routed in a back side part so that it may not stand out from the front side of a support member. The flat wiring member is attached to the support member using a resin clip or the like. In this case, the component cost increases.

  On the other hand, in Patent Document 1, when fixing the FPC harness to the door trim, a fixing hole is provided in the FPC harness, and the fixing hole is attached to the fixing protrusion provided in the door trim. A fixing method for an FPC harness is disclosed in which a tip portion of the protruding projection is welded to form a retaining portion at the tip portion of the projection, thereby fixing the FPC harness to the door trim (Patent Document). 1).

JP 2002-151867 A (page 2-3, FIG. 1-3)

  However, as described in Patent Document 1, in order to fix the FPC harness using thermal welding, a welding facility is required and a welding process is required, so that the fixing work of the FPC harness is also complicated. As a result, there is a problem that the manufacturing cost increases.

  The present invention has been made in view of such problems, and it is possible to reduce the number of components and simplify the mounting work of the flat wiring material, thereby reducing the manufacturing cost and the flat wiring material mounting method. An object is to provide a wiring module.

  The wiring module according to the present invention is a wiring module comprising a flexible flat wiring material provided with a plurality of conductors and a support member that supports the flat wiring material. The portion supported by the support member is formed in a band shape having a pair of side edges, and has a mounting hole at a position between these side edges, and the support member is provided with a pair of side edges of the flat wiring member. A plurality of hooks that are fitted to restrict movement in the thickness direction of the flat wiring member and the rotation direction around the mounting hole, and fitted to the mounting hole of the flat wiring member, It is provided with the protrusion which controls the movement of a surface direction.

  The flat wiring member mounting method according to the present invention is a flat wiring member mounting method in which a flexible flat wiring member formed by arranging a plurality of conductors is attached to a support member. The part to be supported is formed in a belt shape having a pair of side edges, and an attachment hole is formed at a position between these side edges, and the pair of side edges of the flat wiring member is fitted to the support member. A plurality of vertical portions that restrict movement in the thickness direction of the flat wiring member and the rotation direction around the mounting hole, and the flat wiring member mounting hole in the surface direction of the flat wiring member. A protrusion for restricting the movement, flexing a band-shaped portion of the flat wiring member to engage the pair of side edges with the plurality of hooks, and inserting the protrusion into the mounting hole to Flat wiring material Characterized in that to attach the support member.

  In one embodiment of the present invention, when the attachment hole is a long hole and the protrusion rotates the flat wiring member around the protrusion from a state where the flat wiring member is attached to the support member. A retaining portion that fits the mounting hole is formed in the mounting hole of the flat wiring material, and the flat wiring material is centered on the projection after the retaining portion is inserted at an angle that fits the retaining hole. The flat wiring member is attached to the support member by bending the belt-like portion of the flat wiring member and engaging the pair of side edges with the plurality of saddle-shaped portions.

  According to the present invention, the support member is provided with a plurality of saddle parts, and the protrusions are provided between the saddle parts, while the flat wiring material is provided with the mounting holes into which the protrusions can be inserted, and the flat wiring material is supported by the support member. At the time of attachment, the belt-like portion of the flat wiring member is bent to engage the pair of side edges with the plurality of saddle portions of the support member, and the protrusion is inserted into the attachment hole. As a result, the flat wiring material is restricted from moving in the thickness direction of the flat wiring material and in the rotation direction around the mounting hole by the saddle portion, and is restricted from moving in the surface direction of the flat wiring material by the protrusion. As a result, the flat wiring board can be easily attached to the support member without requiring a welding step or the like, and can be in a fixed state in which movement is restricted within a certain range.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a plan view showing a schematic configuration of a wiring module according to an embodiment of the present invention, and FIGS. 2 and 3 are perspective views showing a part of an FPC harness mounting method in the wiring module in an enlarged manner. is there.

  In this example, the wiring module 1 is mounted on a door panel of an automobile, and includes a door trim 2 as a support member that is a resin interior board, a power window drive circuit attached to the door trim 2, and electrical components such as a door lamp. The component 3 includes an FPC harness 5 as a flat wiring member connected to the electrical component 3 via a connector 4.

  As shown in FIG. 2, the FPC harness 5 is formed by forming a plurality of elongated conductors 12 on an insulating sheet 11 made of a flexible resin film or the like, and further overlaying a protective film 13 thereon. At least a portion attached to the door trim 2 forms a belt-like portion 14, has a pair of side edges 15, 16 along the conductor 12, and has a mounting hole 17 in the center of the belt-like portion 14. The mounting hole 17 is preferably formed in the land portion 18 by forming a land portion 18 or the like in the conductor 12 in order to increase the mounting strength.

  On the other hand, the door trim 2 includes a plate-like main body portion 21, a pair of ribs 22 and 23 formed on the main body portion 21 and engaged with the side edges 15 and 16 of the band-like portion 14 of the FPC harness 5, and the FPC. And a protrusion 24 to be inserted into the mounting hole 17 of the harness 5. The ribs 22 and 23 extend along the side edge portions 15 and 16 of the FPC harness 5 and form a bowl-shaped section having a bowl-shaped cross section. A clip 25 for fixing the door trim 2 to the door panel is provided at a predetermined position on the peripheral edge of the surface facing the door panel (not shown) of the door trim 2.

  According to the above configuration, as shown in FIG. 3, the band-like portion 14 of the FPC harness 5 is bent to engage the pair of side edge portions 15 and 16 with the pair of ribs 21 and 22, and then the FPC harness 5. The FPC harness 5 is fixed to the door trim 2 by inserting the protrusions 23 into the mounting holes 17.

  As described above, in this embodiment, the FPC harness 5 is extremely attached to the door trim 2 without using any separate parts for mounting and without using any special machine for mounting such as a welding device. Easy to install. Moreover, since the removal is easy, the maintenance can be performed well.

  The FPC harness 5 is regulated by the ribs 22 and 23 in the thickness direction of the FPC harness 5 (Z direction in FIG. 3) and in the rotational direction around the mounting hole 24, and the projection 24 causes the surface direction of the FPC harness 5 to be Since the movement in the XY direction in FIG. 3 is restricted, it is stably attached to the door trim 21.

FIG. 4 is an enlarged perspective view showing a part of the FPC harness 35 attached to the door trim 2 according to another embodiment of the present invention.
In the previous embodiment, the mounting hole 17 was circular, but in this embodiment, the mounting hole 37 formed in the FPC harness 35 is a long hole whose longitudinal direction is the direction in which the conductor 12 extends. By using such a long hole-shaped mounting hole 37, mounting can be performed without any trouble even if the mounting hole 37 and the protrusion 24 are slightly displaced. In addition, since the attached FPC harness 35 can move in the longitudinal direction of the attachment hole 37 indicated by the arrow in the drawing, there is a problem that the FPC harness 35 is partially pulled due to a dimensional error when attaching at a plurality of locations. It does not occur and smooth installation work becomes possible.

FIG. 5 is an enlarged perspective view showing a part of a door trim 42 according to still another embodiment of the present invention.
In this embodiment, an umbrella-shaped retaining portion 45 is formed at the tip of the protrusion 44. By forming the retaining portion 45 in this way, the FPC harness is not easily detached due to vibration or impact, and more stable fixing is possible.

FIG. 6 is a plan view showing a wiring module 51 according to still another embodiment of the present invention, and FIG. 7 is an enlarged perspective view showing a part for explaining a method for attaching the FPC harness 35 in the wiring module 51. FIG.
In this embodiment, a retaining portion 55 is formed at the tip of the projection 54 of the door trim 52, and this retaining portion 55 rotates the FPC harness 35 around the projection 54 from the state in which the FPC harness 35 is attached to the door trim 52. It is formed in a long disk shape that fits the mounting hole 37 (long hole).

  According to this embodiment, as shown in the two-dot chain line in FIG. 6 and FIG. 7B, the band-like portion 36 of the FPC harness 35 is rotated so that the protrusion 54 fits the retaining portion 55. After inserting into the mounting hole 37 at an angle, the FPC harness 35 is rotated in the opposite direction to return to the original angle, and the belt-like portion 36 of the FPC harness 35 is bent to engage the pair of side edges 38 and 39 with the ribs 22 and 23. By combining, the FPC harness 35 can be attached to the door trim 52 as shown in FIG. Finally, the connector 4 is connected to the electrical component 3 and the wiring of the FPC harness 35 is completed.

  As shown in FIG. 6, such an attachment method is preferably adopted for attaching both ends of the FPC harness 35 in the longitudinal direction that are relatively easy to rotate. Of course, when the degree of freedom of rotation of the FPC harness 35 is high, the rotation angle θ may be 90 °. By setting the rotation angle θ to be large, the retaining effect is further improved. Therefore, the angle θ of the retaining portion 55 can be arbitrarily set within a range of, for example, 20 ° to 90 ° in consideration of the degree of freedom of rotation and the retaining effect.

Each of the above embodiments is merely an example, and the present invention can be variously modified.
That is, in the above-described embodiment, the example in which the support member is a door trim has been described. However, when applied to an automobile, the support member is also used to attach a flat wiring material to a center console box, a center console panel, a grab box, or the like. The present invention can be applied, and can be applied to applications other than automobiles.

  Moreover, as a flat wiring material, it is applicable also to attachment of a flexible flat cable (FFC) besides the FPC harness mentioned above.

  As the saddle-shaped portion formed on the support member, in addition to the ribs described above, column-shaped or protruding saddle-shaped portions may be formed discretely along the longitudinal direction.

It is a top view of the wiring module which concerns on one Embodiment of this invention. It is a disassembled perspective view which expands and shows a part of FPC harness attachment part in the same wiring module. It is a perspective view which expands and shows a part which shows the attachment method and attachment state of the attachment part. It is a perspective view which expands and shows a part of wiring module which concerns on other embodiment of this invention. It is a perspective view which expands and shows a part of door trim which concerns on other embodiment of this invention. It is a top view of the wiring module which concerns on other embodiment of this invention. It is a perspective view which expands and shows a part which shows the attachment method of the FPC harness in the same wiring module.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,51 ... Wiring module, 2, 42, 52 ... Door trim, 3 ... Electrical component, 4 ... Connector, 5, 35 ... FPC harness, 17, 37 ... Mounting hole, 22, 23 ... Rib, 24, 44, 54 ... Projection, 45, 55 .. retaining part.

Claims (5)

A flexible flat wiring material provided with a plurality of conductors; and
In a wiring module comprising a support member for supporting the flat wiring material,
The flat wiring member is formed in a band shape having a pair of side edges supported by the support member, and has a mounting hole at a position between these side edges,
The support member is
A plurality of saddle-shaped portions that are fitted with a pair of side edges of the flat wiring material and restrict movement in the thickness direction of the flat wiring material and the rotation direction around the mounting hole;
A wiring module comprising: a protrusion that fits into a mounting hole of the flat wiring member and restricts movement of the flat wiring member in a surface direction.   The wiring module according to claim 1, wherein the attachment hole is a long hole.   The wiring module according to claim 1, wherein the protrusion has a retaining portion formed at a tip thereof. In the mounting method of the flat wiring material for attaching the flexible flat wiring material having a plurality of conductors to the support member,
The portion of the flat wiring member supported by the support member is formed in a band shape having a pair of side edges, and an attachment hole is formed at a position between these side edges,
A plurality of saddle-shaped portions, in which a pair of side edges of the flat wiring material is fitted to the support member to restrict movement in the thickness direction of the flat wiring material and the rotation direction around the mounting hole, and the flat Providing a projection that fits in the mounting hole of the wiring material and restricts movement in the surface direction of the flat wiring material,
The flat wiring member is bent and the pair of side edges are engaged with the plurality of hooks, and the projection is inserted into the mounting hole to attach the flat wiring member to the support member. A mounting method for a flat wiring material, characterized in that The mounting hole is a long hole,
The protrusion is formed with a retaining portion adapted to the mounting hole when the flat wiring member is rotated around the protrusion from a state where the flat wiring member is attached to the support member.
After inserting the protrusion into the mounting hole of the flat wiring member at an angle that fits the retaining portion,
Rotate the flat wiring material around the protrusion,
By bending the strip-shaped portion of the flat wiring material and engaging the pair of side edges with the plurality of saddle-shaped portions,
5. The flat wiring material attaching method according to claim 4, wherein the flat wiring material is attached to the support member.

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