JPH09240389A - Fixing structure for wire harness of vehicle door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a wire harness arranged in a door frame of a vehicle to be easily fixed without passing through a hole in a door frame and to improve a water-proof characteristic and protection of the wire harness. SOLUTION: This is a fixing structure 10 in which it is assembled by a hollow glomet 14 made of resilient material and a substantial L-shaped protector assembly 16 comprised of a base 12 separate from the glomet and integrally formed after the wire harness 15 being passed outside a door and a cover, and after this operation, this is fitted to and engaged with L-shaped detents 11e formed at a door side part and a door inner side. A water-proof lip piece 14b is arranged on a supporting plate 14d at a lower part of the glomet and then the protector assembly 16 is inserted from side part into the water-proof lip piece so as to make a sealed engagement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness mounting structure for an automobile door, and more specifically,
A variety of removable grommet and protector assemblies fitted in a substantially L-shaped recess cut out from the door side plate portion to the door inner plate portion and arranged in the door frame of a vehicle. The present invention relates to a mounting structure in which a focusing end portion of a wire harness connected to an electrical component is pulled out from a door side plate through the assembly and a grommet and connected to a vehicle side.

[0002]

2. Description of the Related Art A conventional example of a mounting structure for a wire harness for a vehicle door of this type will be described with reference to FIGS. The substantially L-shaped attachment 2 shown in FIG. 7 is fixed to the substantially L-shaped recess 1e of the door frame 1 shown in FIG. The attachment 2 has a grommet 3 (FIGS. 8 and 9).
Is attached, the lead-out portion 4a of the wire harness 4 is pulled out from the opening 3a of the grommet 3, and the connector 5 is attached to this end portion.

As shown in FIG. 6, the door frame 1 has a plurality of working cutout holes 1b and 1c formed in an inner plate portion 1a, and a side plate portion 1d on the hinged side of the door frame 1 extends from the inner plate portion 1a. A generally L-shaped concave portion 1e is formed.
The door wire harness 4 is partially housed in the fixture 2 in a flat plate shape, and the flat plate-shaped end portions are connected to the connectors 5a, 5a.
Connection line 4 to each electric component having b, 5c, 5d and 5e
b, 4c, 4d, 4e, 4f are formed.

The fixture 2 will be described in detail with reference to FIGS. 8 and 9. It should be noted that both figures are perspective views shown from a different angle from FIGS. 6 and 7 in order to show the structure of the attachment 2 in detail. The substantially L-shaped attachment 2 includes a wire harness lead-out portion 2a that abuts the side plate portion 1d of the door frame 1 and a wire harness support portion 2b that abuts the inner plate portion 1a. The wire harness lead-out portion 2a supports the wire harness. A wire harness accommodating groove 2c is formed inside the portion 2b. The wire harness lead-out portion 2a is provided with a through hole 2d and a mounting flange 2f in which mounting holes 2e are formed at the top and bottom.

A case-shaped rubber waterproof cover 6 is provided to cover the wire harness lead-out portion 2a, and the waterproof cover 6 is inserted through the through hole 6a and the mounting flange 2f corresponding to the through hole 2a of the wire harness lead-out portion. It has through-holes 6b, 6b that allow it. In FIG. 6, reference numeral 8 indicates a waterproof rubber around the door.

The wire harness 4 is fixed to the wire harness lead-out portion 2a of the fixture 2 and the housing groove 2c of the wire harness supporting portion 2b by an appropriate method by its flat plate portion, and after the lead-out portion 4a is pulled out from the through hole 2d. , The annular groove 3b of the grommet 3 is engaged with the peripheral edge of the through hole 2d, and then the wire harness lead-out portion 2a is covered with the waterproof cover 6, and in this state, the fitting 2 is fitted into the recess 1e of the door frame 1 to be mounted. It is fixed by a screw 7 through the mounting hole 2e of the flange 2f.

[0007]

In the above conventional structure, the fixture 2, the waterproof cover 6 and the grommet 3 are provided.
Since they are assembled individually, there is a problem in waterproofness at the joint between the grommet 3, the waterproof cover 6 and the waterproof cover 6 and the fixture 2, and the wire harness 4 is also fitted to the L-shaped fixture 2. The wire harness 4 must be shaped into an L-shape and fixed to the accommodation groove 2c of the mounting tool 2. Further, since the wire harness 4 is in direct contact with the door frame 1, there is also a problem in protecting the wire harness 4.

An object of the present invention is to easily fix a wire harness arranged in a door frame of an automobile without passing through a hole of the door frame, and to improve waterproofness and protection of the wire harness. It is to provide a mounting structure for a wire harness for a vehicle.

[0009]

According to the present invention, the grommet is integrally attached with a support plate having an opening for pulling out the wire harness focusing end at one end and a lower opening at the other end. And a lip piece, and the protector assembly includes one arm having an attachment portion having an opening corresponding to the lower opening and the other arm having a fixing protrusion to the door frame. Consisting of an L-shaped base and a cover which is integrated with the base and has a raised portion forming a wire harness guide passage therein, for combining the base and the cover of the protector assembly, and By inserting the attaching portion into the waterproof lip piece of the grommet from the side, the periphery of the attaching portion is sealed by the waterproof lip piece. Only structure is provided.

The base and cover forming the protector assembly are fixed by being surrounded by the waterproof lip piece formed integrally with the grommet on the side of the door frame that is in contact with the side plate portion so as to surround the periphery of the door frame. It is fixed to the inner plate portion by a fixing protrusion provided on the side of contact with the plate portion. The converging end of the wire harness is pulled out through the pullout opening of the grommet, and one connector is connected to the tip.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In one embodiment of a wire harness mounting structure for an automobile door according to the present invention, the grommet is a hollow body composed of a head portion, a bellows, an elbow portion, a support plate and a waterproof lip piece. In addition, it is integrally molded of a material having elasticity.

As another embodiment of the attachment structure for a wire harness for an automobile door according to the present invention, the waterproof lip pieces are inwardly extended from upper and lower end edges and one side edge of the support plate which are parallel to each other. An inner peripheral groove is formed between the inwardly extending flange and the outwardly extending peripheral flange, the inner peripheral groove being defined between the inwardly facing flange and the back surface of the support plate. It is fitted into the inner circumferential groove.

Further, as another embodiment of the mounting structure for a wire harness for an automobile door according to the present invention, the protector assembly is at least one at each of the upper and lower end edges of the attachment part of the base having a substantially L shape. And a mounting hole that engages when the attachment portion is fitted into the inner circumferential groove is formed corresponding to the inward flange.

As another embodiment of the attachment structure for a wire harness for an automobile door according to the present invention, the raised portion of the cover has a rectangular cross section.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

[0016]

1 shows a vehicle door frame 11 using a wire harness mounting structure 10 according to the present invention. The door frame includes a side plate portion 11a and an inner plate portion 11b, and the inner plate portion has a plurality of working holes 1
1c and 11d are formed, and a substantially L-shaped recess 11e is formed from the side plate portion 11a to the inner plate portion 11b. In this embodiment, a plate portion is left between the working hole 11d and the recessed portion 11e, and a hole is formed here to fix the fixing projection 12b of the base 12 of the protector assembly 16 as described later.
I am trying to insert and fix it. Door frame 11
The mounting structure 10 of the wire harness 15 including the protector assembly 16 integrally assembled with the grommet 14 is fitted and fixed in the substantially L-shaped recess 11e.
Reference numeral 18 is a waterproof rubber around the door.

2 and 3 schematically show a wire harness mounting structure 10. The grommet 14 has a hollow rectangular head 14c made of an elastic material such as rubber, which is pressed against the pillar on the vehicle body side, at the upper end, and extends substantially vertically from the head through the bellows 14h. A bent hollow tubular elbow portion 14f extends, and a rectangular support plate 14d is integrally formed at a lower end portion of the elbow portion 14f. A lower opening 14a provided at a central portion thereof has a lower end portion of the elbow portion 14f. Are connected and fixed.

In particular, the mounting structure 10 shown in FIG.
In order to clearly show the detailed configuration, the same configuration used for the door on the side opposite to the door shown in FIG. 1 is shown in an exploded perspective view of the door as seen from diagonally below.
The outer peripheral portion of the support plate 14d excluding one side is made of an elastic material and has a peripheral flange 1 slightly protruding from the periphery.
A waterproof lip 14b with 4k is attached. The peripheral edge flange 14k is the recess 11 of the door side plate portion 11a.
The effect of elastically locking the mounting structure 10 in e is produced.

Further, a pair of inward flanges 14m which are folded back toward the inside parallel to each other are formed on the upper and lower edges of the support plate 14d, and the inner peripheral groove 1 having a rectangular cross section is formed between the support plate 14d and the back surface.
4e is formed. The attachment portions 12a and 13a of the protector assembly 16 are laterally inserted into the inner circumferential groove 14e. In this embodiment, the support plate and the waterproof lip are other related parts, the grommet head 14c,
Both the bellows portion 14h and the elbow portion 14f are manufactured as a single unit grommet 14 by integral molding using a plastic material such as rubber having elasticity.

As shown in FIG. 2, the head 14c of the grommet 14 has an opening 14 used as an outlet for the wire harness 15 facing in the direction opposite to the lower end thereof.
g is provided, and one connector 17 is connected to the converging end portion 15a of the wire harness 15 pulled out from the opening 14g as shown in FIG. 1, and is provided on the vehicle body side (not shown). Connected to the other connector. The head portion 14c is also elastically sealed and locked in a recess (not shown) on the vehicle body side, and the focusing end portion 15a is guided therein so as to be freely movable regardless of whether the door is open or closed. That is, the head portion 14c and the protector assembly 16 are connected to each other by the bellows 14h, which is a substantially flexible joint.

As is apparent from FIG. 3, the protector assembly 16 is substantially composed of two members, and the base 12 which constitutes one of the members is formed of an elongated flat plate bent in a substantially L shape. Has been done. Further, one of the arms serves as the attachment portion 12a and the support plate 1 of the grommet described above.
It recedes in parallel with other portions with a step difference by a thickness of 4d. In this way, the mounting portion is retracted in parallel so that when the protector assembly 16 and the grommet 14 are assembled, the other portion of the base 12 and the surface of the support plate 14d are flush with each other. Is.

An opening 12c corresponding to the lower opening 14a of the support plate 14d is provided on the side of the attachment portions 12a and 13a which are surrounded by the waterproof lip 14b when inserted.
Are drilled. Fixed protrusions 12b are provided at appropriate positions on the periphery of the attachment portion 12a, and are fitted into attachment holes 14n formed at least at one location on each of the upper and lower sides of the inward flange 14m of the waterproof lip piece 14b. At the part of the base 12 that extends by bending vertically to the side opposite to the attachment part 12a, a similar fixing protrusion 1 for attaching and fixing the entire structure 10 to the recess 11e of the side plate part 11a of the door frame 11 is provided.
One 2b is provided at each corner.

The cover 13 constituting the other member of the protector assembly 16 is formed of a hard resin or metal molded plate body bent at a right angle in a substantially L-shape like the base 12, and is shown by the alternate long and short dash line in FIG. As shown in FIG. 5, which is an enlarged cross section of AA shown in FIG. 5, the cover 13 has a raised portion 13c having a trapezoidal cross section along the length direction, and in a state of being overlapped with the base 12, that is, in a use state. A guide passage 13d, which is a space bent into an L-shape with a trapezoidal cross section, which guides and inserts the plate-shaped wire harness 15 that is wired inside the door following the converging end portion 15a of the wire harness is formed. The sectional shape is not particularly limited to the trapezoid. The cover 13 is provided with through holes 13b through which the fixing protrusions 12b of the base 12 are inserted, at appropriate positions of both L-shaped arms.

Further, as can be seen from FIG. 3, both the attaching portions 12a and 13a of the protector assembly 16 are retracted by the thickness of the support plate 14d of the grommet, and these grommet and protector assembly are united. In this case, the outer surface of the base 12 is designed to be flush with the surface of the support plate 14d. As a result, the mounting structure 1
0 can be fitted into the inner edge portion of the door recess 11e in an orderly and elastic manner.

Assembling the protector assembly 16 and attaching it to the grommet 14 and further attaching it to the door of an automobile will be described with reference to FIG. 1 as an example. As a first step, the grommet 14 is previously attached to the door side plate portion 11a.
It starts by fitting into the substantially L-shaped recess 11e. Next, the protector assembly 16 is passed through the fixing projection 12b on the base 12 thereof through the through hole 13b of the cover 10,
These bases and covers are assembled together, and then the focusing end portion 15a of the wire harness 15 already wired inside the door, to which one connector 17 is already attached, is pulled out from the working hole 11c near the door side plate, The protector assembly 16 assembled as described above passes through the guide passage 13d from the outer end portion and is pulled out from the opening 12c of the attachment portion 12a. It is also possible to replace the step of fitting the base 12 and the cover 13 after the wire harness 15 is passed through the opening 12c in advance before the protector assembly 16 is combined.

The pulled-out focusing end portion 15a is inserted from the lower opening 14a of the grommet 14 which is fitted to the door side plate portion in advance, and the elbow portion 14f and the bellows 14 are inserted.
h, pulling out from the opening 14g of the head through the inside of the head 14c, and then attaching parts 12a and 13a of the combined protector assembly 16 to the inner peripheral groove formed in the waterproof lip piece 14b of the grommet 14. 14e is inserted from the side.
Then, as a final step, each fixing protrusion 12b of the base 12 is attached to the inward flange 14m of the waterproof lip piece 14b.
By assembling the mounting holes 14n formed on the upper and lower sides and the hidden mounting holes of the door inner plate portion 11b, assembly and mounting are completed.

Of course, first, the protector assembly 16 in which the grommet 14 and the wire harness 15 are inserted is assembled,
Needless to say, the step of fitting the recesses 11e in the door side plate and the inner plate thereafter can also be performed.

Referring again to FIG. 1, the wire harness 15 whose one end is connected to the one connector 17 has the guide passage 1
3d is a flat plate at the position where it exits, but the other end is distributed and the connectors 17 of many switches are installed inside the door.
Connection line 15 to a, 17b, 17c, 17d, 17e
b, 15c, 15d, 15e, 15f are formed.

In the wire harness mounting structure 10 according to the present invention, the grommet 14 is provided with the waterproof lip piece 14b supported by the support plate 14d, so that the base 12 of the protector assembly 16 and the attachment portions 12a and 13a of the cover 13 are attached. Since it surrounds the periphery in a sealed manner, it is waterproof.

At the same time, since the wire harness 15 can be inserted into the grommet side before the protector assembly 16 extending along the lengthwise direction of the L-shape is assembled, the wire harness 15 can be assembled and installed at the door. There is no need to put your hands inside, it is extremely efficient and safe.

Since the portion of the wire harness 15 that abuts the side plate portion 11a and the inner plate portion 11b of the door frame 11 is covered by the protector cover 13,
The protection of the wire harness 15 in this portion is improved. Furthermore, with this mounting structure, it is possible to fix the grommet 14 to the door frame simply and extremely quickly.

[0032]

According to the first aspect of the present invention, there is provided a wire harness mounting structure for an automobile door according to the present invention. The protector assembly is easily combined and removed from two plate-like bodies having a relatively long length and having substantially the same shape. Since the structure is made possible and the connection with the grommet is made easy, the wire harness routed in the door frame of the automobile can be easily and quickly fixed without passing through the hole of the door frame, and electrical and mechanical It has the effect of improving physical protection. Further, since the waterproof lip piece is provided on the grommet to seal the connecting portion with the protector assembly, the waterproofness of the wire harness is improved.

In the mounting structure for a wire harness for a vehicle door according to the present invention as defined in claim 2, the grommet is made of an elastic material so that a connection with a protector assembly having a higher sealing property can be obtained at the same time. Due to its elasticity, it can be easily attached to and detached from the automobile door side plate, improving waterproofness and maintainability, and further improving productivity by integrally molding each component. Cause

According to the third aspect of the present invention, there is provided a wire harness mounting structure for an automobile door according to the present invention, in which a grommet is accurately placed at a proper position in the recess of the door side plate by providing a peripheral flange on the waterproof lip in the same manner as the above effect. Since it is possible to fit in the protector assembly and the inner peripheral groove that is defined by the inward flange, it is easy to attach and detach to the protector assembly, and at the same time, high waterproofness is secured. Is obtained.

According to a fourth aspect of the present invention, there is provided a structure for mounting a wire harness for a vehicle door according to the present invention, in which a protector assembly and a grommet are used at the time of use due to the engagement between the fixing protrusion on the attachment portion side and the mounting hole on the waterproof lip side. It is expected that the effect of preventing the and from coming off and obtaining a more robust mounting structure can be obtained.

Further, in the structure for mounting a wire harness for a vehicle door according to the fifth aspect of the present invention, the effect that the structural mechanical strength is ensured is obtained by forming the ridge portion of the cover into a rectangular sectional shape. On the other hand, on the other hand, there is also a manufacturing effect that it is possible to form a thinner metal plate or a plastic plate.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an automobile door frame using a wire harness mounting structure according to the present invention.

FIG. 2 is a schematic perspective view showing a state in which the wire harness attachment structure according to the present invention is attached to the door frame of FIG.

FIG. 3 is an exploded perspective view showing the mounting structure of the wire harness according to FIG. 2 as viewed from another angle.

FIG. 4 is a schematic perspective view showing an assembled state of the attachment structure for the wire harness according to FIG.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a schematic perspective view showing a door frame using a conventional vehicle door wire harness mounting structure.

FIG. 7 is a schematic perspective view of only the mounting structure of FIG.

8 is an exploded perspective view showing an assembled state of the attachment structure of FIG. 7 as seen from another angle with a wire harness.

9 is a schematic perspective view showing a state in which the mounting structure of FIG. 8 is assembled.

[Explanation of symbols]

 10 Mounting Structure 11 Door Frame 11a Door Side Plate Part 11b Door Inner Plate Part 11e Substantially L-Shaped Recess 12 Base 12a Attachment Part 12b Fixing Protrusion 12c Open 13 Cover 13a Attachment Part 13b Through Hole 13c Raised Part 13d Guide Passage 14 Grommet 14a Lower part opening 14b Waterproof lip piece 14c Head part 14d Support plate 14e Inner peripheral groove 14f Elbow part 14g Opening 14h Bellose 14k Peripheral flange 14m Inward flange 14n Mounting hole 15 Wire harness 15a Wire harness converging end 15b Connecting wire 15c Connecting wire 15d connection line 15e connection line 15f connection line 16 protector assembly 17 one connector 17a connector 17b connector 17c connector 17d connector 17e connector

Claims (5)

[Claims] 1. A removable grommet and a protector assembly, which are fitted into a substantially L-shaped recess cut out from the door side plate portion to the door inner plate portion, and arranged in a door frame of an automobile. In a mounting structure of a wire harness for an automobile door, in which a converged end portion of a wire harness connected to various mounted electric components is pulled out from a door side plate through the assembly and a grommet and connected to a vehicle side, the grommet has one end. A waterproof lip piece integrally attached with a support plate having an opening for pulling out the wire harness focusing end portion and having a lower opening at the other end, and the protector assembly corresponds to the lower opening. A substantially L-shaped base consisting of one arm having an attachment part having an opening and the other arm having a fixing projection to the door frame; Consists of a cover provided with a raised portion for forming a wire harness guide passage is combined with the over scan and inside thereof is combined, coalesce the base and cover of the protector assembly,
Then, the attachment part is laterally fitted into the waterproof lip piece of the grommet so that the periphery of the attachment part is sealed by the waterproof lip piece. Harness mounting structure. 2. The grommet is a hollow body composed of a head portion, a bellows, an elbow portion, a support plate and a waterproof lip piece, and is integrally molded of a material having elasticity. Attachment structure for a wire harness for an automobile door as described. 3. The waterproof lip has an inward flange that extends inwardly from upper and lower edge portions of the support plate that are parallel to each other and one side edge, and a peripheral flange that extends outwardly. The inner peripheral groove is defined between the flange and the back surface of the support plate, and the attachment portion of the protector assembly that is united is fitted and inserted into the inner peripheral groove. Wire harness attachment structure for automobile doors. 4. The protector assembly is provided with at least one fixing protrusion at each of upper and lower edge portions of the attachment portion of the substantially L-shaped base, and the attachment portion is fitted in the inner peripheral groove. The mounting structure for a wire harness for an automobile door according to claim 3, wherein a mounting hole that engages when inserted is formed corresponding to the inward flange. 5. The attachment structure for a wire harness for an automobile door according to claim 1, wherein the raised portion of the cover has a rectangular cross section.