JP2002101533A - Structure for mounting grommet to door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a grommet to a door by use of one piece of a bolt. SOLUTION: A structure for mounting the grommet to a door is configured such that the grommet is fitted and fixed to a quasi L-shaped concave formed at the edge face of the doorframe hinged with a car body towards the inner surface of a room side and a door harness is cabled to the car-body side from the inner surface of the room side through the grommet. The grommet 20 is positioned and held by inserting latching pieces 43, 44 mounted to an outer member 40 for fixing the grommet to the doorframe 11 into latching holes 12e, 12f, and the bolt hole of a fixing fragment 42 at the tip of the outer member 40 is mated with the bolt hole of the doorframe for enabling one piece of the bolt 50 to fix the grommet to the doorframe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet door mounting structure, and more particularly, to a door harness routed to a vehicle door without passing a through hole through a vehicle body facing end surface of a door frame to a vehicle body side. It is to be arranged.

[0002]

2. Description of the Related Art Conventionally, a door harness wired to a door of an automobile is provided with a through hole in an end face of a door frame hingedly connected to a vehicle body, and a grommet attached to the door harness is mounted in the through hole to allow the door harness to pass through the door. A door harness is routed to the vehicle body, and the grommet is used to prevent water from entering through the through hole. However, since the work of passing the door harness through the through hole from the inside of the door and attaching the grommet attached to the door harness to the through hole is performed from the inside of the door, it is very difficult and troublesome. It is a big neck on.

In order to solve the above problem, a door harness is routed from the inside of the door toward the vehicle body without providing a through hole in the door frame. Various proposals have been made in which an L-shaped recess is provided and a door harness is routed along the recess to eliminate the work of inserting the door harness from the inside of the door frame into the through hole and the work of attaching the grommet. Have been.

For example, in Japanese Utility Model Publication No. 2-46438, as shown in FIG. 9, a substantially L-shaped mounting tool 1, a grommet 2 which is engaged with the mounting tool 1, and a case-shaped rubber waterproof cover 3 are provided. With the grommet 2 attached to the door harness W / H, the door harness W / H is passed through the fixture 1, and the grommet 2 is attached to the through hole 1a of the fixture 1. In this state, the waterproof cover 3 is covered, and the mounting fixture 1 is assembled to the substantially L-shaped concave portion 4a provided on the door frame 4, and the bolt is passed through two bolt mounting portions 1a protruding from the mounting fixture 1 so as to pass through the door. It is fixed to the frame 4 with screws.

[0005]

In the above configuration, since the grommet 2 is fixed to the door frame 1, two bolt tightening operations are required, and the number of operations is increased. In some cases, the grommet main body is covered with a metal fixing cover and fixed to the door frame. However, in this case, the fixing cover cannot be positioned, and there is a problem that the number of operations is increased.

Further, the waterproof cover 3 covering the fixture 1 is fitted to the concave portion 4a of the door frame 4 for waterproofing. However, when a load due to a door harness or an external force is applied to the fixture 1, the inner panel 4 is provided. A gap is easily generated between the first and second concave portions 4a, and there is a problem in terms of waterproofness. Further, the weather strip 5 is mounted on the outer surface of the waterproof cover 3 over the mounting fixture 1. If a step occurs between the outer surface of the waterproof cover 3 and the outer surface of the door frame 4, There is a problem that a gap is generated between the step and the weather strip 5, and water is generated from the outside to the vehicle compartment side through the gap.

To solve the above problem, a flange (seal lip) provided on the grommet on the outer surface of the door frame around the recess.
When the flange is present on the outer surface of the door frame, a step is also formed between the flange and the outer surface of the door frame, and a gap is formed between the outer surface of the door frame and the weather strip. However, the problem of inundation in the vehicle interior due to this gap cannot be solved. For this reason, when the flange portion is made thin, the adhesion to the door frame is reduced and the door frame is easily deformed, so that it is difficult to ensure the sealing performance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a concave portion provided from an indoor inner plate portion of a door frame to an end plate portion facing the vehicle body, and a door harness is routed along the concave portion. In the type derived to the side,
In addition to simplifying the work of fixing the grommet door frame, it is necessary to ensure the sealing performance, and to ensure that the waterproofness of the weatherstrip is maintained without generating a step in the mounting line of the weatherstrip. It is an issue.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a grommet which is fitted into a substantially L-shaped recess formed from an end surface of a door frame on a hinge connection side to a vehicle body to an inner surface on the indoor side. A grommet door mounting structure for fixing and arranging a door harness toward the vehicle body through the grommet, wherein the grommet is made of rubber or an elastomer, and is fitted at least to a vehicle body facing side of a concave portion of the door frame. A recess fitting portion, a bellows-shaped cylindrical portion for deriving a door harness protruding from the recess fitting portion, a grommet body including a vehicle body locking portion provided at a tip of the bellows-shaped cylindrical portion, and a metal, The recess has a substantially L-shape that closes the opening, and the end surface on the vehicle body-facing side is attached to the outer surface of the recess fitting portion by penetrating the bellows-like cylindrical portion of the grommet body. A fixing piece with one bolt hole is protruded at the tip of the outside of the vehicle from the mounting line, and two locking pieces to be inserted and locked into the door frame locking portion are protruded on both sides in the width direction. The grommet is fixed to the door frame by fastening a grommet to a bolt hole of the outer member with one bolt and locking the grommet at two places by the two locking pieces. Provides door mounting structure.

In the above configuration, the work of fixing the grommet to the door frame is performed by positioning and holding the grommet at two positions in the width direction, so that the grommet can be fixed only by fastening one bolt on the distal end side. Therefore, two bolts are conventionally required, but in the present invention, only one bolt is required, and the bolting operation can be reduced by half. In an automobile assembling operation, if at least one bolted portion is reduced, workability can be greatly improved. In addition, when the bolt is tightened, the outer member is positioned and held by the locking piece to the door frame, so that the bolt tightening operation can be easily performed.

The outer member is combined with the grommet body separately from the grommet body. Alternatively, the outer member may be molded to form the grommet main body, the outer member may be embedded near the outer surface of the concave fitting portion of the grommet main body, and the fixing piece and the locking piece may protrude. When the outer member is integrated with the grommet main body in this way, the work of assembling the outer with the grommet main body can be further omitted, and the workability can be further improved.

The locking pieces protruding from both sides in the width direction of the outer member are formed in an L-shape, and the leading end side is protruded toward the fixing piece, and is slid into a locking portion formed by a locking hole provided in the door frame. It is configured to be inserted. Instead of making a locking hole in the door frame, a U-shaped locking portion may be protruded, and the locking mechanism is not limited, and an appropriate locking mechanism can be adopted.

The recess fitting portion of the grommet body has a substantially rectangular shape attached to only the side of the recess facing the vehicle body, and has an L-shaped and U-shaped resin inner member housed in the recess. The inner member is attached to the inner surface of the recess fitting portion. The grommet body is also L-shaped along the recess of the door frame, the inner member is housed in the recess, the recess fitting portion of the grommet body is fitted inside the recess opening side, and further, the outer member is arranged on the surface thereof. You may.

When the outer member is fitted to the grommet main body and fixed to the door frame, the concave fitting portion of the grommet main body and the inner member are pushed into the concave portion of the door frame with a strong force to be fixed. The bottom surface can be brought into contact with the concave bottom surface of the door frame.

It is preferable that both side surfaces of the concave portion are inclined surfaces, while side surfaces of the concave fitting portion of the grommet body are inclined surfaces, and the inclined surfaces are brought into contact with each other in the concave portion to form a sealing surface. As described above, when the inclined surface between the side wall of the concave portion and the immediate surface of the concave portion fitting portion of the grommet main body is in contact with the inclined surface in the concave portion, the sealing area can be increased, so that the sealing performance can be improved. .

As described above, when the grommet body is sealed to the door frame with a large area inside the concave portion, there is no need to provide a seal lip provided when sealing is performed on the outer surface of the door frame. Therefore, the opening width of the concave portion and the width of the concave fitting portion are the same, the concave fitting portion is fitted exactly in the concave portion, and the outer surface of the concave fitting portion is flush with the outer surface of the door frame. be able to. As a result, it is possible to enhance the waterproof function of the weather strip without generating a step in the mounting line of the weather strip between the door frame and the outer surface of the grommet.

In the recess fitting portion of the grommet main body, a recess for fitting an outer member is provided on the outer surface of the portion of the weather strip mounting line, and the outer member is fitted in the same plane as the outer surface of the door frame. Is formed so that a step is not generated. Therefore, even when the outer member is attached, no step is generated in the weather strip mounting line, and it is possible to reliably prevent water from flowing into the gap with the weather strip due to the step.

The door frame provided with the substantially L-shaped concave portion is formed of a metal door inner panel, and the indoor surface side of the door inner panel is provided with an opening having a substantially frame shape,
A resin panel is fitted into and fixed to the opening, and a door harness and an electrical component connected to the door harness are previously assembled on both front and back surfaces of the resin panel. The door inner is drawn out to the surface side from the hole provided, and the door inner by the outer member in a state where the door harness is passed through the recess provided in the door inner panel between the inner member and the grommet body. The grommet is fixed to a panel in advance and modularized.

As described above, the door harness to be attached to the door and the electrical components connected to the door harness are fixed to the resin panel in advance, and the door harness is attached to the door / inner panel for fixing the resin panel toward the vehicle body. If the above-mentioned grommet to be derived is attached in advance and modularized, the door
By simply welding the inner panel to the outer panel, the door harness and electrical components can be formed on the door, and the door assembly workability can be greatly improved.

[0020]

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

FIGS. 1 to 7 show a first embodiment, in which a door frame of a door DR attached to both right and left sides of a vehicle body comprises a metal outer / outer panel 10 and a door / inner panel 11.・ Inner panel 11
Is approximately L from the end surface 11a of the vehicle body facing surface, which is the hinge coupling side with the vehicle body (not shown), to the indoor side inner surface 11b.
The recess 12 having a shape is formed by recessing the frame.

The indoor inner surface 11b of the door / inner panel 11 has a large opening 11c in the center as a frame shape, and a resin panel 13 is fitted and fixed in the opening 11c. The door frame W / H is previously fixed to both sides of the resin panel 13 with clamps (not shown), and various electric components 14 connected to the door harness W / H are fixed. An electric wire W attached to the inside of the door of H is taken out through a through hole 14 a formed in the resin panel 13, and the door harness W / H is routed collectively to the recess 12. A door trim 15 is further attached to the indoor surface side of the resin panel 13 and the door inner panel 11.

As shown in FIG. 2, the substantially L-shaped concave portion 12 of the door / inner panel 11 includes an end surface portion 12a on the side facing the vehicle body and a side surface portion 12b on the indoor side. End face 12
The tip 12c of a has an arc shape, and the tip is located outside the vehicle with respect to the weather strip mounting line L. A bolt hole 12d is provided at a position apart from the tip 12c by a required distance. Further, the locking holes 12 are located outside the weather strip mounting line L on the vehicle and at the upper and lower positions of the recess 12.
f, 12 g are provided.

Also, both side walls 12h and 12i of the concave portion 12 are inclined surfaces in a direction approaching each other toward the bottom surface 12j, and the concave portion 12 has a trapezoidal cross section. In the side part 12b, both side walls do not necessarily need to be inclined, and may be a depression having a rectangular cross section. In addition, the end face 12
The peripheral wall 12k of the distal end 12c of a is also a slope inclined toward the bottom surface 12j.

FIGS. 3 to 6 show the grommet 20 which is attached to the recess 12 and guides the door harness W / H toward the vehicle body. The grommet 20 includes a grommet main body 21 formed of rubber (or elastomer), an inner member 30 made of resin, and an outer member 40 made of metal.

As shown in FIG. 3, the grommet body 21
A concave fitting portion 22 that fits into the end surface portion 12a of the concave portion 12 on the vehicle body facing side, a bellows-like cylindrical portion 23 that continuously projects from the concave fitting portion 22, and a tip of the bellows-like cylindrical portion 23 Are integrally formed.

The recess fitting portion 22 is a substantially rectangular shape having an arc portion at one end for fitting with the arc portion at the tip of the recess 12, and has a bellows-like cylindrical portion protruding from the arc portion at the tip. Recess fitting part 22
Is fitted into the recess 12 so as to be flush with the opening surface of the recess 12. On its outer surface, shallow dents 22a for fitting the outer member are formed leaving portions along the upper and lower sides and along the arc-shaped periphery, and cutouts 22c at the front end and both sides in the width direction of the periphery 22b.
22d and 22e are provided.

The upper and lower opposing side surfaces 22 of the recess fitting portion 22
g, 22h and the tip-side circular arc peripheral surface 22i are inclined surfaces, and the inclined side walls 12h and 12i of the concave portion 12 and the peripheral wall 12k are brought into contact with each other, and the inclined surface is a sealing surface.

Further, on the inner surface side of the concave fitting portion 22, one locking projection 22j, 22k, and 22m for the inner member is provided at the center of the tip on the arc side, and on both sides of the other end.

A seal lip 22n is provided around the base of the bellows-like cylindrical portion 23, and a sandwiching portion of the outer member 40 is formed between the outer surface of the recess fitting portion 22 and the seal lip 22n.

The outer member 40 is, as shown in FIG.
It is made of a thin metal plate bent into a substantially L shape that closes the opening of the concave portion 12 and includes an end surface portion 40a facing the vehicle body and an indoor inner surface portion 40b, and a circular arc portion 40b is provided at the tip end of the end surface portion 40a.
Is provided, and a through hole 41 is formed to penetrate the bellows-like cylindrical portion 23 of the grommet main body. In addition, a fixing piece 42 having a bolt hole 42a provided in a stepped manner from the apex of the arc part 40c is provided so as to be bent upward, and L
The locking pieces 43 and 44 having a shape are stepped and bent downward to protrude. These fixing pieces 42 and locking pieces 43, 4
Numeral 4 is located outside the mounting line L of the weather strip 5 on the vehicle. The locking pieces 43 and 44 are slid into the locking holes 12f and 12g to be inserted and locked, and the bolt holes 42a and 12d are aligned in the locked state.
In this state, when the bolt 50 is inserted into the bolt holes 42a and 12d and fastened, the outer member 40 is fixed to the door / inner panel 11 in a stable state.

The end face 40a of the outer member 40 is
The bellows-like cylindrical portion 23 of the grommet main body 21 is passed through the through hole 41, and is fitted into the step 22a of the concave fitting portion 22,
The fixing piece 42 and the locking pieces 43, 44 project from the notches 22c, 22d, 22e. In this state, the end face portion 40a forms the same plane as the outer surface of the recess fitting portion 22.

FIG. 6 shows the inner member 30, which has an end face portion 31 on the vehicle body-facing side and a side face portion 32 on the indoor side, has a substantially U-shaped cross section, and has a closing portion 33 at the tip end side of the end face member 31.
Is provided. With the door harness W / H inserted into the inner member 30, locking projections 22j, 22k, 22m provided on the recess fitting portion 22 of the grommet body 21 are provided.
Locking portions 36, 37, 38 are provided on the side wall 34 for locking
The inner member 30 and the recess fitting portion 22 define an electric wire insertion space S.
Is enclosed.

The bottom surface 35 of the inner member 30
Is brought into contact with the bottom surface 12e of the recess 12 so that the recess fitting portion 22 fits exactly to the opening side of the recess 12 without protruding.

Door harness W / to grommet 20
First, the door harness W is inserted into the inner member 30.
/ H, the outer member 40 and the pre-set grommet body 21 are assembled, and the door harness W
/ H passes through the bellows-like cylindrical portion 23 and is drawn out from the tip end opening of the vehicle body locking portion 24.

In this state, the grommets 20 are fitted into the concave portions 12, but at this time, the locking pieces 43, 44 of the outer member 40 are slid into the locking holes 12f, 12g, and inserted and locked. In this state, the grommet body 21
The recess fitting portion 22 and the inner member 30 are fitted in the recess 12 and the outer member 40 closes the opening of the recess 12. Further, the bolt hole 12a of the door inner panel 11 of the bolt hole 42a of the outer member 40 is formed.
The grommet 20 is fixed to the door inner panel 11 by matching with d and screwing it through the bolt 50.

As described above, the grommet 20 is fixed to the door / inner panel 11 by positioning and holding the two locking pieces 43 and 44 by locking them in the locking holes. It only needs to be fastened. Also, the outer surfaces on both sides of the slope of the recess fitting portion 22 of the grommet main body 21 abut against the slopes of both side walls of the recess 12, thereby sealing the slopes.

Further, the peripheral edge of the recess fitting portion 22, the outer surface of the outer member 40, and the outer surface of the end surface portion 11a of the door / inner panel form the same plane, so that no step is generated. As a result, a step is not generated in the weather strip 5, and the waterproof function can be enhanced.

The present invention is not limited to the above embodiment.
As shown in FIG. 5, the grommet body 21 may be formed by molding the outer member 40. That is, the outer member 4
0 is embedded near the outer surface of the concave fitting portion 22 of the grommet main body 21, and a fixing piece 42 provided with a bolt hole and a locking piece (not shown) are projected. With the above configuration, the number of operations for assembling the outer member 40 to the grommet main body 21 can be omitted.

In the above embodiment, the inner member 30
The opening is closed by the outer member 40, and the door harness is moved along the recess by the grommet body 2 along the recess.
1, the inner member 30 may be omitted.

[0041]

As is apparent from the above description, according to the present invention, only one bolt needs to be screwed to fix the grommet to the door frame, so that the grommet fixing operation is very simple. As a result, the grommet mounting workability can be improved.

Further, since the grommet body and the outer surface of the door frame can be made flush with the grommet body with the outer member attached thereto, a step is not generated in the weather strip, and the waterproof performance can be improved. it can.

[Brief description of the drawings]

FIG. 1A is a schematic perspective view of an automobile door according to an embodiment of the present invention, and FIG. 1B is an exploded perspective view of a grommet.

FIG. 2A is a perspective view of a door frame, and FIG. 2B is a cross-sectional view showing a shape of a concave portion formed in the door frame.

FIG. 3 is a cross-sectional view showing a state where a grommet is attached to a concave portion.

FIG. 4 shows a grommet body, (A) is a plan view,
(B) is a front view, (C) is a side view.

FIG. 5 shows an outer member, (A) is a plan view,
(B) is a front view, (C) is a side view.

FIG. 6 shows an inner member, (A) is a front view,
(B) is a side view.

FIG. 7 is a drawing showing a fixed state of a grommet.

FIG. 8 is a sectional view of a main part showing a second embodiment.

FIGS. 9A and 9B are diagrams showing a conventional example of a grommet.

[Explanation of symbols]

 Reference Signs List 11 door / inner panel 11a end face portion 11b side face portion 12 concave portion 12d bolt hole 12f, 12g locking hole 20 grommet 21 grommet main body 22 concave fitting portion 22a concave portion 30 inner member 40 outer member 42 fixing piece 42a bolt hole 43, 44 Locking piece

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H01B 17/58 H01B 17/58 C H02G 3/38 H05K 7/00 MH05K 7/00 H02G 3/28 F (72) Inventor Koichi Yamaga 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. ) Inventor Koji Kano 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie F-term in General Engineering Co., Ltd. 3H023 AA04 AB01 AC08 AC61 AC71 AE13 4E352 AA09 AA16 BB10 BB15 CC02 CC12 CC22 CC53 CC56 DR26 DR40 DR43 EE03 GG04GG11 5G333 AA09 AB16 AB26 AB28 CB18 CB19 DA03 EA02 5G363 AA01 AA16 BA02 CB08 DC03

Claims (7)

[Claims] 1. A grommet is fitted and fixed in a substantially L-shaped concave portion formed from an end surface of a door frame on a hinge connection side with a vehicle body to an inner surface portion on the indoor side, and a door harness is arranged toward the vehicle body through the grommet. A door mounting structure for a grommet to be searched, wherein the grommet is made of rubber or an elastomer, and a concave fitting portion that fits at least on a vehicle body facing side of a concave portion of the door frame;
A bellows-shaped tubular portion for projecting a door harness protruding from the recess fitting portion, a grommet main body provided with a vehicle body locking portion provided at a tip of the bellows-shaped tubular portion, and a metal, and an opening of the recessed portion is closed. The end face on the vehicle body facing side is attached to the outer surface side of the recess fitting portion by penetrating the bellows-like cylindrical portion of the grommet body, and is attached to the front end of the vehicle outside the weather strip mounting line. The grommet is provided with an outer member having a fixing piece provided with two bolt holes and projecting two locking pieces which are inserted into and locked to the door frame locking portions on both sides in the width direction. A grommet door mounting structure in which the grommet is fixed to the door frame by fastening the outer member with a bolt in one of the bolt holes and locking the two locking pieces in two places. 2. The grommet door mounting structure according to claim 1, wherein the outer member is combined with the grommet body separately from the grommet body. 3. The grommet body is formed by molding the outer member, the outer member is embedded near the outer surface of the recess fitting portion of the grommet body, and the fixing piece and the locking piece are projected. Item 2. A grommet door mounting structure according to Item 1. 4. A locking piece protruding from both sides in the width direction of the outer member is formed into an L shape, and a leading end side is protruded toward a fixed side, and is slid into a locking portion including a locking hole provided in a door frame. Claims 1 to 3 which are configured to be inserted by inserting
The grommet door mounting structure according to any one of the preceding claims. 5. The concave fitting portion of the grommet body has a substantially rectangular shape attached only to the vehicle body facing surface side of the concave portion.
5. The apparatus according to claim 1, further comprising an inner member made of a resin having an L-shape and a U-shaped cross section to be housed in the recess, and attaching the inner member to an inner surface of the recess fitting portion. The grommet door mounting structure according to the paragraph. 6. The grommet main body according to claim 1, wherein both side surfaces of the concave portion are inclined surfaces, while side surfaces of the concave portion fitting portion of the grommet body are inclined surfaces, and the inclined surfaces are brought into contact with each other in the concave portion to form a sealing surface. The grommet door mounting structure according to any one of the preceding claims. 7. A recessed portion for fitting an outer member is provided on an outer surface of a portion of a weather strip mounting line at a recessed fitting portion of the grommet main body, and the outer member is fitted to the outside of the door frame. Form the same plane as the surface,
The grommet door mounting structure according to any one of claims 1 to 6, wherein a step is not generated.