JP2004180486A - Fixing structure for flat harness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure for flat harness for electrical equipment wherein a flat harness is fixed at low cost with ease on a member on which the harness is to be fit. <P>SOLUTION: Inserting portions 8a to 8e comprising slits or cuts of predetermined length are formed in the bridge portions 5a of a flat cable 2 constituting a flat harness 1. An attaching portion 91 constituted of a projected streak or a projection is formed on a module 90. The flat cable 2 is installed on the module 90 so that the attaching portion 91 is inserted into an inserting portion 8a. Thus, the attaching portion 91 is clamped by elastic force from insulating coating 5 and elastic force from conductors 4a and 4b at both the ends of the inserting portion 8a. As a result, the flat cable 2 is less prone to come off in such a direction that the cable gets away from the module 90, and thus the flat harness 1 is fixed on the module 90. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flat harness mounting member composed of a flat cable (Flat Cable: FC) or a flexible flat cable (Flexible Flat Cable: FFC) for connecting electrical components (auxiliary equipment) mounted on an automobile or the like. More particularly, the present invention relates to a flat harness fixing structure that can be easily fixed to a member to be mounted at low cost.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, wire harnesses have been mainly used for connecting electrical components (auxiliary machines) such as automobiles. A wire harness is formed by bundling electric wires connecting each of the auxiliary devices into a harness shape. Usually, crimp terminals are attached to the ends of the electric wires constituting the harness. It is built into a connector that is connected to a connector or the like provided in the device. Further, in addition to the wire harness, a flat harness in which a plurality of conductors are covered with an insulating coating and which are arranged in a plane and arranged side by side, whereby a plurality of conductors can be arranged neatly is often used. I have.
[0003]
When wiring such a flat harness to an automobile or the like, the flat harness is temporarily attached to an attachment member having a clip or the like, and then fixed to a member to be attached such as a frame via an attachment member (for example, see Patent Document 1). 1).
[0004]
[Patent Document 1]
JP-A-7-274357 (page 3-4, FIG. 1-5)
[0005]
[Problems to be solved by the invention]
However, in order to fix the flat harness with such a structure, a mounting member is separately required, and a mechanism for fixing the flat harness to both the mounting member and the mounted member (for example, a clip and a fitting to the clip). Holes, etc.), the number of parts and the number of steps for processing the parts increase, which may increase the cost. In addition, since the flat harness is once attached to the attachment member and then fixed to the attachment member, the fixing operation may be complicated.
[0006]
The present invention has been made to solve such a problem, and an object of the present invention is to provide a flat harness fixing structure that can easily fix a flat harness to a member to be mounted at low cost.
[0007]
[Means for Solving the Problems]
The fixing structure of a flat harness according to the present invention is a fixing structure of a flat harness to a member to be attached, which is configured by a cable in which a plurality of conductors are covered with an insulating coating and arranged in a planar manner. An insertion portion formed of a predetermined length of slit or cut formed along the conductor, penetrating the insulating coating between at least one pair of conductors among the insulating coatings between the conductors of the plurality of conductors Wherein the attached member has an attaching portion comprising at least one ridge or projection inserted into the insertion portion of the cable at a predetermined position, and the flat harness has an attaching portion of the attached member, wherein the attaching portion of the attached member is the cable. And the fixing portion is fixed to the member to be mounted in a state where the mounting portion is sandwiched between the conductors.
[0008]
According to the present invention, among the insulating coatings between the conductors of the cable constituting the flat harness, the insulating coating between at least one pair of conductors is formed with an insertion portion formed of a slit or cut of a predetermined length, and Since the member has at least one protrusion or projection attached to the insertion portion, the cable is attached to the member to be attached so that the attachment is inserted into the insertion portion. Thus, the flat harness can be fixed to the member to be mounted. For this reason, separate parts and the like are not required for fixing, and the fixing operation is simplified. Thus, the flat harness can be easily fixed to the attached member at low cost.
[0009]
The mounting portion of the member to be mounted is provided at an end in a direction orthogonal to the insertion direction of the cable into the insertion portion so as to prevent the mounting portion inserted into the insertion portion from being removed in the direction opposite to the insertion direction. It is preferable to provide at least one stopper protrusion or at least one retaining piece formed so that the distal end side of the attachment portion is longer than the insertion portion in the longitudinal direction of the insertion portion.
[0010]
In addition, the cable is a flat cable having a structure in which each of a plurality of conductors is covered with an insulating coating, and each of the insulating coatings is coupled to each other, or a plurality of conductors are formed in a plane by lamination or extrusion. It is preferable that the flexible flat cable has a structure covered with an insulating coating.
[0011]
The member to which the flat harness is fixed is preferably made of a resin molded member. For example, a bumper face of a bumper, various covers, panels, and the like can be considered.
[0012]
For example, if the member to be mounted is provided with a plurality of mounting portions above and below the mounting end of the cable, and the cable is provided with a plurality of insertion portions at positions corresponding to the plurality of mounting portions, the mounting member is attached to the mounting member. The rattling of the cable can be suppressed, and the cable can be securely fixed to the attached member.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a simplified layout diagram showing a flat harness for realizing a flat harness fixing structure according to one embodiment of the present invention, and FIGS. 2 and 3 are partially enlarged perspective views for explaining this fixing structure. It is.
The flat harness 1 includes a flat cable 2 composed of a plurality of conductors arranged in a plane and covered with an insulating coating, a plurality of connectors 3a, 3b, 3c, and 3d mounted on the flat cable 2, and a flat cable 2. Auxiliary devices 7a, 7b, 7c, 7d each comprising a connector connecting portion which is composed of a relay connector 6 mounted at a predetermined position between both ends of the cable 2 and has connectors 3a to 3d fitted thereto. It is fixed to a module 90 or the like as a member to be attached, and electrically connects each of the auxiliary devices 7a to 7d. The connectors 3a to 3d have connection terminals (not shown) connected to the auxiliary machines 7a to 7d, and the relay connector 6 has relay connection terminals (not shown) connected to another harness (not shown). ) Are provided.
[0014]
As shown in FIG. 2, the flat cable 2 is made of a conductor 4a, 4b, 4c, 4d, 4e, 4f made of a wire material such as a single wire or a stranded wire of a round conductor made of, for example, Cu or Al, and polyethylene terephthalate (PET). , Polyethylene naphthalate (PEN), polyimide (PI), polyolefin (PO), and the like, and covered with an insulating coating 5 made of an insulating resin. It consists of a combined flat cable structure. The flat cable 2 may be a flexible flat cable having a structure in which a conductor 4 made of a rectangular conductor is covered with an insulating coating 5 formed two-dimensionally by lamination or extrusion.
[0015]
In the bridge portion 5a between the conductors 4a to 4f of the flat cable 2, a plurality of insertion portions 8a to 8e formed of slits of a predetermined length are formed along the conductors 4a to 4f in the arrangement direction of the conductors 4a to 4f. Have been. Note that these insertion portions 8a to 8e may be formed of cuts of a predetermined length, and at least one of the insertion portions 8a to 8e may be formed in the flat cable 2.
[0016]
On the other hand, at a predetermined position of the module 90, an attachment portion 91 formed of a ridge inserted into the insertion portions 8a to 8e is formed. Note that the mounting portion 91 may be formed of a projection, and it is sufficient that at least one mounting portion 91 is formed on the module 90.
[0017]
In order to mount and fix the flat harness 1 to the module 90, as shown in FIG. 3, the mounting portion 91 of the module 90 is connected to one of the insertion portions 8a to 8e of the flat cable 2 (in this example, 8a is selected). The flat cable 2 may be attached to the module 90 so as to be inserted into the module 90. With this configuration, the mounting portion 91 inserted into the insertion portion 8a is sandwiched between the elastic force of the insulating coating 5 and the elastic force of the conductors 4a and 4b on both sides of the insertion portion 8a. The flat harness 1 is fixed to the module 90 because the flat harness 1 is difficult to be removed in the direction away from the module 90. According to this fixing structure, the insertion portions 8a to 8e are formed in the flat cable 2, the mounting portions 91 are formed in the module 90, and the mounting portions 91 are inserted into the insertion portions 8a to 8e. The flat harness 1 can be fixed with a simple operation. The number of the mounting portions 91 may correspond to each of the insertion portions 8a to 8e, and may be formed in the module 90.
[0018]
In addition, when the mounting portion 91 having the shape as shown in FIGS. 4 and 5 is formed in the module 90, the flat cable 2 is more difficult to be pulled out. That is, in the mounting portion 91 shown in FIG. 4, a retaining projection 93 for retaining is formed at an end portion 92a in a direction orthogonal to a direction in which the mounting portion 91 is inserted into the insertion portions 8a to 8e. The retaining projection 92 is difficult to be caught by the bridge portion 5a on the periphery of the opening of the insertion portion 8a to 8e. The retaining projection 93 may be formed on the other end 92b, may be formed on both ends 92a and 92b, or may be formed in a plurality. On the other hand, in the attaching portion 91 shown in FIG. 5, retaining pieces 95a and 95b for retaining are formed at ends 94a and 94b in a direction orthogonal to the direction of insertion of the attaching portion 91 into the insertion portions 8a to 8e. As a result, the retaining pieces 95a and 95b are hardly caught by the bridge portion 5a around the openings of the insertion portions 8a to 8e. Note that only one of the retaining pieces 95a and 95b may be formed in the mounting portion 91.
[0019]
FIG. 6 is a partially enlarged perspective view illustrating a flat harness fixing structure according to another embodiment of the present invention, and FIG. 7 is a partial cross-sectional view illustrating a case where the fixing structure is applied to a bumper. .
As shown in FIG. 6, in this example, a plurality of mounting portions 91a and 91b formed of ridges to be inserted into the insertion portions 8a to 8e are formed at predetermined positions of the module 90, and correspond to the mounting portions 91a and 91b. This is different from the previous example in that the mounting portions 91a and 91b are inserted into the insertion portions 8a and 8e provided at the positions where they are to be inserted. According to this fixing structure, rattling of the flat harness 1 can be suppressed by the plurality of mounting portions 91 a and 91 b provided above and below, and the flat harness 1 can be more reliably fixed to the module 90. As shown in FIG. 7, for example, when the module 90 is a bumper face 98 of a bumper 99 such as an automobile, the flat cable 2 is mounted and fixed to the bumper face 98 via the mounting portions 91a and 91b, and furthermore, the mounting position If a bumper 99 is formed by attaching an absorber 96 having a concave portion 97 that avoids the above to the bumper face 98, the bumper 99 to which this fixing structure is applied can be easily realized. The bumper 99 does not require a separate protective tape or the like for protecting the flat harness 1, so that cost reduction can be realized.
[0020]
【The invention's effect】
As described above, according to the present invention, among the insulating coatings between the conductors of the cable constituting the flat harness, the insertion portion having a predetermined length of slit or cut is formed in at least one of the insulating coatings between the conductors. Is formed on the member to be mounted, and the mounting portion including at least one ridge or projection inserted into the insertion portion is formed on the member to be mounted. Therefore, the cable is connected to the member to be mounted so that the mounting portion is inserted into the insertion portion. When attached, the attachment portion is sandwiched between the conductors, and the flat harness can be fixed to the attached member. For this reason, separate parts and the like are not required for fixing, and the fixing operation is simplified. Thereby, there is an effect that the flat harness can be easily fixed to the attached member at low cost.
[Brief description of the drawings]
FIG. 1 is a simplified layout diagram showing a flat harness for realizing a flat harness fixing structure according to an embodiment of the present invention.
FIG. 2 is a partially enlarged perspective view for explaining the fixing structure.
FIG. 3 is a partially enlarged perspective view for explaining the fixing structure.
FIG. 4 is a perspective view showing another attachment portion formed on the module.
FIG. 5 is a perspective view showing another attachment portion formed on the module.
FIG. 6 is a partially enlarged view for explaining a flat harness fixing structure according to another embodiment of the present invention.
FIG. 7 is a partial cross-sectional view showing a case where the fixing structure is applied to a bumper.
[Description of Symbols] 1 ... Flat harness, 2 ... Flat cable, 3 ... Connector, 4 ... Conductor, 5 ... Insulation coating, 6 ... Relay connector, 7 ... Auxiliary equipment, 8 ... Insertion section, 90 ... Module, 91 ... Mounting Parts, 92, 94 ... end parts, 93 ... retaining projections, 95 ... retaining pieces.

Claims (8)

A fixed structure to a member to be attached of a flat harness composed of cables in which a plurality of conductors are covered by an insulating coating and arranged side by side in a plane,
The cable is
Of the insulating coating between the conductors of the plurality of conductors, penetrating the insulating coating between at least one pair of conductors, an insertion portion formed of a predetermined length of slit or cut formed along the conductor. Prepare,
The attached member,
At least a mounting portion comprising at least one ridge or projection inserted into the insertion portion of the cable at a predetermined position,
The flat harness is
A fixing structure for a flat harness, wherein an attaching portion of the attached member is inserted into an insertion portion of the cable, and the attaching portion is fixed to the attached member while being sandwiched between the conductors. The attachment portion of the attached member is provided at an end in a direction perpendicular to the insertion direction of the cable into the insertion portion, in order to prevent the attachment portion inserted into the insertion portion from coming off in the direction opposite to the insertion direction. The flat harness fixing structure according to claim 1, further comprising at least one retaining projection. The attachment portion of the attached member is provided at an end in a direction perpendicular to the insertion direction of the cable into the insertion portion, in order to prevent the attachment portion inserted into the insertion portion from coming off in the direction opposite to the insertion direction. 3. The flat according to claim 1, further comprising at least one retaining piece formed such that a tip end side of the mounting portion is longer than the insertion portion in a longitudinal direction of the insertion portion. Harness fixing structure. The cable according to any one of claims 1 to 3, wherein each of the plurality of conductors is a flat cable having a structure in which each of the plurality of conductors is covered with an insulating coating, and each of the insulating coatings is coupled to each other. The flat harness fixing structure described in the item. The cable according to any one of claims 1 to 3, wherein the cable is a flexible flat cable having a structure in which the plurality of conductors are covered with an insulating coating formed two-dimensionally by lamination or extrusion. Flat harness fixing structure. The fixing structure of a flat harness according to any one of claims 1 to 5, wherein the attached member is formed of a resin molded member. The flat harness fixing structure according to any one of claims 1 to 6, wherein the mounted member is a bumper face. The attached member includes a plurality of the attachment portions above and below an attachment end of the cable, and the cable includes a plurality of the insertion portions at positions corresponding to the plurality of attachment portions. The flat harness fixing structure according to claim 1.

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