JP3839657B2 - Instrument panel harness layout - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
Various optional parts are attached to the instrument panel of an automobile. Some of these parts are not mounted on the production line, but are mounted at a store according to the user's desire. The present invention relates to wiring of such optional parts.
[0002]
[Prior art]
Generally, the main harness arranged inside the instrument panel is fixed to the panel member of the vehicle body, and then the branch harness is branched. On the other hand, when an electrical component is attached to the instrument panel as an optional component, a branch harness prepared in advance is connected to the electrical component. This electrical component is, for example, a speaker, and a mounting hole is provided in the instrument panel for fitting it. This hole is normally closed with a lid member. When connecting the branch harness to the speaker, the connection is performed by passing the branch harness through the mounting hole.
[0003]
In the prior art as described above, when the lid member is removed, it is not known where the branch harness is, so that the wiring with the electrical component cannot be performed while the instrument panel is attached to the vehicle body. Therefore, the instrument panel is purposely removed, the branch harness is drawn out, and the electrical component is connected through the mounting hole. Alternatively, the electric wire from the electrical component side is passed through the attachment hole and connected to the branch harness. After such connection is completed, the instrument panel is attached to the vehicle body again.
[0004]
[Problems to be solved by the invention]
As described above, attaching / detaching a large unit such as an instrument panel requires a large number of work steps, requires a long time to install optional electrical components, and is disadvantageous in terms of the cost to be borne by the customer. . Further, in such a large-scale detachment work, if the operator's skill level is insufficient, there is a risk of damaging the fixed portion of the instrument panel.
[0005]
[Means for solving the problems and their functions]
The present invention has been conceived to solve the above-described problems. The invention of claim 1 is directed to a branch harness in which a main harness is arranged inside an instrument panel and branches from the main harness. -In a wiring structure in which the ness is connected to various electrical components of the instrument panel, the branch harness is bent to form a locking portion, and the vicinity of the end of the branch harness is connected to the main harness via the temporary fixing portion. -It is integrated with the nes, and this temporary fixing part has a structure in which the branch harness is separated from the main harness with a force of a certain value or more, and a lid is attached to the mounting hole of the electrical component opened in a part of the instrument panel It is characterized in that the members are matched and the latching portion of the branch harness is held by the latching piece installed on the back surface of the lid member.
[0006]
If the lid member is removed and pulled away as it is, the locking piece will be pulled with the locking portion of the branch harness hooked, and when this force acts on the temporary fixing portion and the value exceeds a certain value, the branching will occur. Harness is separated from main Harness. By this separation, the locking piece pulls out the branch harness, and the branch harness passes through the mounting hole and is exposed to the outside. Thereafter, the branch harness is connected to the terminal of the electrical component, and then the electrical component is fitted into the mounting hole and fixed.
[0007]
As described above, since the branch harness is drawn in conjunction with the operation of removing the lid member, it is possible to avoid searching for the branch harness one by one. Since the branch harness is pulled out by such a simple operation, it is not necessary to remove the instrument panel, the workability is greatly simplified, and at the same time, it is effective for reducing the cost of the customer. . Since it is a locking part with a curved shape, it is only necessary to hook the locking part in advance with a locking piece when fitting the cover member into the mounting hole, and to simplify the work when attaching the cover member. Can do.
[0008]
The invention of claim 2 is characterized in that, in claim 1, the electrical component is a speaker.
[0009]
Since components such as speakers are often retrofitted as optional components, the present invention is advantageous for such frequent cases.
[0010]
In the wiring structure in which the main harness is arranged inside the instrument panel and the branch harness branched from the main harness is connected to various electrical components of the instrument panel, The locking portion is formed by bending the harness, and the vicinity of the end of the branch harness is integrated with the main harness via the temporary fixing portion, and this temporary fixing portion is branched by a force exceeding a certain value. -The structure is separated from the main harness, and the lid member is aligned with the mounting hole of the electrical component opened in a part of the instrument panel, and the locking part is arranged near the mounting hole. It is characterized in that when it is removed, the latching portion can be pulled to pull out the branch harness.
[0011]
In the first aspect of the invention, the latching portion of the branch harness is pulled out by the latching piece of the lid member. It brings out the ness. That is, since there is a locking part immediately after opening the lid member, the branch harness is easily pulled out and connected to the electrical component by pulling it with a hand or a hook-like tool. Here, it is an idea that the curved locking portion is kept waiting in the immediate vicinity of the attachment hole and the lid member, and is pulled out on the spot when the lid member is opened.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail according to illustrated embodiments. FIG. 1 is a longitudinal sectional view as seen from the rear of an automobile. In this embodiment, a speaker is attached to the upper plate 2 of the instrument panel 1. The instrument panel 1 has a substantially box shape mainly composed of an upper plate 2, a front plate 3, and a horizontal plate 4, and is formed of polypropylene resin. A mounting hole 5 is formed in the upper plate 2, and a lid member 6 is fitted in the upper plate 2. Although not shown in detail, the instrument panel 1 is coupled to a part of the vehicle body, that is, the dash panel 7 and the front pillar 8.
[0013]
Main components of the wire harness 9 are a main harness 10, a branch harness 11 branched from the main harness 10, a coupler 12 attached to the branch harness 11, and the like. The main harness 10 is disposed inside the instrument panel 1, and is here attached to the dash panel 3 using a plurality of fixtures 13. An example of the fixture 13 is shown in FIG. In this case, a thick attachment piece 15 is formed integrally with the ring portion 14, and an attachment fitting 16 welded to the dash panel 3 is inserted to be attached to the dash panel 3. The main harness 10 is accommodated in a corrugated tube 17 that can be bent freely, and this tube passes through the ring portion 14. Although the case where the main harness 10 is fixed to the dash panel is shown here, the main harness 10 may be attached to the inner surface of the instrument panel 1 in some cases.
[0014]
The branch harness 11 has a curved loop shape, and this portion serves as a locking portion 18. The vicinity of the tip of the branch harness 11 is integrated with the main harness 10 via a temporary fixing portion 19. The temporary fixing portion 19 has a function of separating the branch harness 11 from the main harness 10 with a force of a certain value or more. Here, the adhesive tape 21 provided with a large number of slits 20, 11 is wound.
[0015]
A hook-shaped locking piece 22 is integrally formed on the back surface of the lid member 6, and a curved locking portion 18 is hooked on the hook-shaped locking piece 22. In order to establish such a hook, the locking portion 18 is disposed near the attachment hole 5 and the lid member 6. The speaker 23 is shown by a two-dot chain line in FIG. 2, and a coupler 25 is installed on the electric wire 24 on the speaker 23 side.
[0016]
When attaching the speaker, if the lid member 6 is opened and pulled as it is, the locking piece 22 is pulled in a state where the locking portion 18 of the branch harness is hooked, and this force acts on the temporary fixing portion 19 to When the value exceeds a certain value, the branch harness 11 is separated from the main harness 10. In this separation, when a force of a certain value or more is applied to the adhesive tape 21, the force is concentrated on the slit 20 and torn from there, and the separation is performed. As a result, the locking piece 22 pulls out the branch harness 11, and the branch harness 11 passes through the attachment hole 5 and is exposed to the outside. Thereafter, the coupler 12 is coupled to the coupler 25 of the speaker 23. Then, the speaker 23 is fitted into the mounting hole 5 and fixed as shown by a two-dot chain line in FIG.
[0017]
When the lid member 6 is fitted into the mounting hole 5, the locking portion 11 is slightly pulled out and hooked on the locking piece 22, and then it is closed tightly.
[0018]
The temporary fixing part 19 can also be realized by a structure as shown in FIG. This is formed of an elastic synthetic resin such as polypropylene resin, and is composed of a substantially horseshoe-shaped clamp piece 26 and a holding portion 27. The main harness 10 is elastically clamped by the clamp piece 26, and the locking portion 18 is passed through the holding portion 27. When the locking portion 18 is pulled, the clamp piece 26 is elastically opened and detached from the main harness 10. That is, the branch harness 11 is separated from the main harness 10.
[0019]
Another invention will be described. In the above invention, the locking portion of the branch harness is pulled out by the locking piece of the lid member. However, in the present invention, such a locking piece is not adopted. That is, as shown in FIG. 6, since there is a locking portion 18 immediately after opening the lid member 6, the branch harness 11 can be easily pulled out by pulling it with a hand or a hook-like tool to the speaker 23. Connect. Here, it is a concept that the curved locking portion 18 is kept waiting in the immediate vicinity of the attachment hole 5 and the lid member 6 and pulled out on the spot when the lid member 6 is opened. The temporary fixing portion 19 is the same as in the previous embodiment, and the branch harness 11 is detached from the main harness 10 when a force exceeding a certain value is applied.
[0020]
According to the present invention, since the branch harness is drawn in conjunction with the operation of removing the lid member, it is possible to avoid searching for the branch harness one by one. Since the branch harness is pulled out by such a simple operation, it is not necessary to remove the instrument panel, the workability is greatly simplified, and at the same time, it is effective for reducing the cost of the customer. . Since the locking portion has a curved shape, when the lid member is fitted into the mounting hole, the locking portion may be hooked in advance with a locking piece, and the operation at the time of mounting the lid member becomes simple. And in the case of components with high attachment frequency like a speaker, it is much more effective.
[0021]
By stopping the locking piece as described above and directly pulling out the curved portion of the locking portion with a hand or hook-shaped tool, the same effect as described above can be obtained. That is, since there is a locking portion immediately after the lid member is opened, the branch harness can be easily pulled out and connected to the electrical component by pulling it with a hand or a hook-like tool. Here, it is a concept that the curved locking portion is kept waiting in the immediate vicinity of the attachment hole and the lid member, and is pulled out on the spot when the lid member is opened.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
2 is a cross-sectional view of (2)-(2) in FIG.
FIG. 3 is a plan view of an adhesive tape.
FIG. 4 is a three-dimensional view showing a part of the instrument panel.
FIG. 5 is a cross-sectional view showing another temporary fixing portion.
FIG. 6 is a longitudinal sectional view showing another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument panel 10 Main harness 11 Branch harness 23 Electrical component 18 Locking part 19 Temporary fixing part 5 Mounting hole 6 Lid member 22 Locking piece

Claims (3)

In a wiring structure in which the main harness is arranged inside the instrument panel and the branch harness branched from the main harness is connected to various electrical components of the instrument panel, the branch harness is bent. A locking part is constructed, and the vicinity of the tip of the branch harness is integrated with the main harness via the temporary fixing part. The lid member is fitted to the mounting hole of the electrical parts opened in a part of the instrument panel, and the latching part of the branch harness is held on the latching piece installed on the back of the lid member. A harness arrangement structure of an instrument panel characterized by having been made. 2. The instrument panel harness arrangement structure according to claim 1, wherein the electrical component is a speaker. In a wiring structure in which the main harness is arranged inside the instrument panel and the branch harness branched from the main harness is connected to various electrical components of the instrument panel, the branch harness is curved. A locking part is constructed, and the vicinity of the tip of the branch harness is integrated with the main harness via the temporary fixing part. The lid member is aligned with the mounting hole of the electrical component opened in a part of the instrument panel, the locking part is arranged near the mounting hole, and when the lid member is removed, the locking part is pulled. A harness arrangement structure for an instrument panel, characterized in that the branch harness can be pulled out.

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