JP2007008267A - Grommet water stop structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grommet water stop structure for arranging a wire harness to a door of a vehicle. <P>SOLUTION: A non-through grommet 10 comprises a grommet cover 11 arranged on a door panel 33 of a back door 32, and a projection bar 50 integrally formed on an outer surface of the grommet cover 11. The projection bar 50 is arranged adjacent and parallel to a weather strip 23 mounted to the door panel 32 beyond the outer surface of the grommet cover 11. The length of the projection bar 50 is set longer than the distance connecting the outer surface on both sides of the grommet cover 11 with a gap 34 generated between the weather strip 23 and the door panel 33. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a grommet water stop structure.

  In general, among doors of a vehicle such as an automobile, a side frame is provided with a through-hole in an end face (that is, a part of a door panel) of a door frame that is hinged to a vehicle body. Ness (that is, a wire harness including an electric wire) is led out from the side door to the vehicle body through a grommet attached to the through hole.

  However, the operation of attaching the grommet to the through hole at the end face of the door frame needs to be performed from the inside of the door, which is very difficult and troublesome.

  Therefore, a through-less grommet suitable for a door structure in which the door harness is led out from the inside of the door to the vehicle body side and extended along the door panel without using a through hole for attaching the grommet to the door frame is used. Has come to be. That is, when this penetration-less grommet is used, the door harness routed to the vehicle door while extending through the penetration-less grommet is extended along the end surface of the door frame of the door (that is, a part of the door panel). As a result, no through holes are required in the door panel.

  An example of such a penetrationless grommet is shown in FIGS. 7, 8 and 9 (see Patent Document 1). 7 and 8 are exploded perspective views of the penetration-less grommet 10. FIG. 8 is a view of the penetration-less grommet 10 of FIG. 7 as seen from another angle. In FIG. 8, the door harness 14 is also shown.

  The grommet 10 includes a hose-like portion 15 in which a bellows is formed, a grommet cover 11 coupled to the hose-like portion 15, and a substantially L-shaped protector 13.

  The hose-like portion 15 is made of a rubber material and can be bent. The grommet cover 11 is a composite member of a rubber plate part integrally formed with the hose-like part 15 and a substantially L-shaped metal inner 12, and the rubber plate part and the inner 12 are integrated by insert molding. .

  As shown in FIG. 8, the door harness 14 is arranged along the inner side of the grommet cover 11 and along the inner 12, and is led out to the vehicle main body side through the hose-like portion 15. The protector 13 is attached to the grommet cover 11 so as to cover the door harness 14.

  As shown in FIG. 9, a substantially L-shaped recess is provided from the indoor side inner plate 21 of the side door to the end face plate 22, and the grommet cover 11 is located in the recess on the end face plate 22 side. The penetration-less grommet 10 is attached to the door panel so that the inner 12 is positioned in the recess of the indoor side inner plate 21. The indoor side inner plate 21 and the end face plate 22 of the side door are part of the door panel.

  In addition, a weather strip 23 is installed at the indoor side position of the end face plate 22 to prevent water from entering from the outside. The weather strip 23 is mounted so as to pass over the grommet cover 11 of the through-less grommet 10 fixed to the door panel.

  When the side door is closed, the weather strip 23 is pressed against the vehicle body side to seal the gap between the vehicle body and the indoor side inner plate 21. Therefore, intrusion of rainwater and the like from this gap is prevented, and outdoor noise is sound-insulated.

  Further, in order to prevent rainwater and the like from being infiltrated from the concave portion of the end face plate 22 positioned outside the weather strip 23 and the through-less grommet 10, in the through-less grommet 10, as shown in FIG. An inner seal portion 16 is provided around the mounting position of the protector 13 on the inner surface of the grommet cover 11, and an outer seal portion 17 is provided on the peripheral edge portion of the grommet cover 11.

  When the penetrationless grommet 10 is attached to the concave portion of the end face plate 22, the outer seal portion 17 contacts the end face plate 22 in the concave portion to prevent water from entering. The inner seal portion 16 prevents the door harness from coming into contact with water even when high-pressure water or the like enters from the outer seal portion 17.

  As shown in FIG. 10, among the doors attached to the vehicle body 30, the flip-up back door (that is, hatchback) 32 is hinged to the vehicle body 30 at the upper door panel portion (that is, the end surface). The attachment portion 31 is formed between the vehicle body 30 and the vehicle body 30.

  The door harness for the electrical components provided in the back door 32 is led out to the vehicle body side through a grommet arranged at the attachment portion 31 of the back door 32.

  When the above-described through-less grommet 10 shown in FIG. 7 to FIG. 9 is used for the back door 32, the grommet cover 11 of the through-less grommet 10 is provided on the door panel portion (that is, the end face) at the upper end of the back door 32. Although fixed to the recess, due to its thickness, it protrudes somewhat from the outer surface of the door panel around the recess.

  The weather strip is mounted so as to climb over the grommet cover 11 and extends in the depth direction of FIG. At this time, since the weather strip has rigidity in the longitudinal direction, the weather strip cannot be brought into close contact with the door panel at the place where it rides on the grommet cover 11 from the door panel of the back door 32, and the weather strip, the door panel, and the grommet cover 11 There is a gap between them. This gap is a major cause of rainwater or the like infiltrating the vehicle interior.

  That is, referring to FIG. 10, for example, rainwater that descends from above the vehicle and enters the attachment portion 31 of the back door 32 reaches a weather strip lying on the attachment portion 31. Since the gap formed between the weather strip, the door panel, and the grommet cover 11 opens upward, rainwater easily enters the vehicle interior from the gap.

JP-A-11-20573

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the grommet water stop structure for routing a wire harness to the door of a vehicle.

In order to achieve the above-described object, the grommet water blocking structure according to the present invention is characterized by the following (1) to (5).
(1) A grommet water stop structure for routing a wire harness to a vehicle door,
The grommet includes a grommet cover disposed on the door panel of the door, and a ridge formed integrally on the outer surface of the grommet cover,
The protruding portion is disposed so as to be parallel to the weather strip mounted on the door panel over the outer surface of the grommet cover.
(2) In the grommet water blocking structure having the configuration of (1) above,
The length of the ridge is set to be longer than a distance connecting an outer surface on both sides of the grommet cover and a gap formed between the weather strip and the door panel, and the ridge is formed on the grommet. On the outer surface of the cover, the grommet cover is formed to the outer surface on both sides of the grommet cover, and both end portions of the protrusion are in close contact with the door panel.
(3) In the grommet water blocking structure having the configuration of (1) above,
The ridge is formed on the outer surface of the grommet cover without any breaks except for the outer surfaces on both sides of the grommet cover, and compared to the width of the portion of the grommet cover where the ridge is disposed, The width of the portion of the grommet cover where the weather strip is disposed is narrow.
(4) In the grommet water stop structure of any one of the above (1) to (3),
The protruding portion further has an inclined surface that increases in height toward the weather strip.
(5) In the grommet water blocking structure having the configuration of (3) above,
The protruding portion further has a return portion formed on the lower surface of both side end portions thereof so that a gap between the protruding portion and the weather strip expands toward the center of the grommet cover. thing.

According to the grommet water stop structure having the above configuration (1), since the opening of the gap between the weather strip and the door panel generated when the grommet is attached to the door is covered with the ridge, Intrusion can be prevented.
Like the grommet water-stopping structure of the configuration (2) above, the ridges are formed on the outer surface of the grommet cover without any breaks on the outer surfaces on both sides of the grommet cover, and both ends of the ridges It is preferable to closely adhere to the door panel in order to prevent intrusion of rainwater or the like into the vehicle interior.
According to the grommet water stop structure having the above configuration (3), the gap between the weather strip and the door panel generated when the grommet is attached to the door is narrowed, and the protrusion provided on the outer surface of the grommet cover Both gaps can be reliably covered.
According to the grommet water stop structure having the above configuration (4), it is possible to quickly guide rainwater or the like to the weather strip and drain it outside the vehicle along the weather strip.
The return portion in the grommet water stop structure having the above configuration (5) holds rainwater or the like to enter the gap between the weather strip and the door panel in the gap and prevents the rainwater or the like from entering the gap.
The above-described grommet water stop structure of the present invention is preferably used as a water stop structure using a through-less grommet for routing a wire harness to a back door of a vehicle.

  According to the present invention, it is possible to prevent rainwater or the like from entering a gap formed between the weather strip, the door panel, and the grommet with a small number of parts and a simple configuration.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  Hereinafter, a plurality of suitable embodiments concerning the present invention are described in detail based on a drawing. In these embodiments, as an example of a grommet that can be adopted in the grommet water-stopping structure of the present invention, a door harness that is routed to a door of a vehicle such as an automobile in a state of penetrating the grommet body is an end face of the door frame of the door. In order to extend along (that is, a part of the door panel), a through-less grommet that does not require a through hole in the door panel is employed. In addition, the present invention is applied to a through-less grommet water stop structure in which such a through-less grommet is provided in a splash-up back door (that is, a hatch back) of vehicle doors. It demonstrates as embodiment of a water structure.

  Fig.1 (a) is a top view which shows 1st Embodiment of the penetration-less grommet water stop structure based on this invention, FIG.1 (b) is I (b) -I (b) arrow cross section of Fig.1 (a). FIG. 2, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 (a), FIG. 3 is a side view of the first embodiment of the penetration-less grommet water stop structure according to the present invention, and FIG. FIG. 4 (b) is a sectional view taken along the line IV (b) -IV (b) of FIG. 4 (a), and FIG. 5 shows the present invention. It is a side view of 2nd Embodiment of the penetration less grommet water stop structure which concerns.

(First embodiment)
First, a first embodiment of a penetration-less grommet water-stopping structure according to the present invention will be described with reference to FIGS. 1 (a) to 3 and the already described drawings.

  This through-less grommet 10 is provided with a hose-like portion 15, a grommet cover 11, and a protector (not shown), similar to the through-less grommet described in Patent Document 1, and is further described in Patent Document 1. As a new configuration that does not exist, the protrusion 50 is provided on the grommet cover 11.

  The through-less grommet 10 is attached to a recess provided on an end surface (herein described as “door panel 33”) of the attachment portion 31 of the back door 32 of FIG. The grommet cover 11 has an inner seal portion and an outer seal portion (both not shown) in the same manner as the through-less grommet in Patent Document 1, and a door harness (not shown) arranged inside the grommet cover 11. A protector (not shown) is fixed so as to cover it, but a detailed description thereof is omitted here.

  The weather strip 23 of the back door 32 is mounted so as to lie on the door panel 33 of the back door 32 through the grommet cover 11, and extends in the depth direction of FIG.

  The protruding portion 50 is integrally formed with the grommet cover 11 at a position close to the weather strip 23 on the grommet cover 11 so as to be parallel to the weather strip 23.

  As shown in FIG. 2, the protrusion 50 has a shape surrounding the outer surface of the grommet cover 11 that protrudes from the outer surface of the door panel 33 around the recess. At the position D in FIG. 2 where the protrusion 50 contacts the door panel 33, both end portions of the protrusion 50 are in close contact with the outer surface of the door panel 33.

  The length of the protrusion 50 is longer than the distance between two gaps 34 described later. Further, as shown in FIG. 3, the protrusion 50 has an inclined surface that increases in height toward the weather strip 23.

  The weather strip 23 is pressed against the vehicle body 30 when the back door 32 is closed, and seals the gap between the outer surface of the door panel 33 and the vehicle body 30 in the mounting portion 31. At this time, the weather strip 23 that has been pressurized and deformed is in close contact with the protrusion 50.

  However, even when the back door 32 is closed, as shown in FIG. 1B, when the weather strip 23 rides on the grommet cover 11, it faces upward between the weather strip 23, the door panel 33, and the grommet cover 11. As a result, a gap 34 is formed.

  However, in this through-less grommet 10, the protrusions 50 are arranged on the weather strip 23, that is, arranged so as to cover the opening of the gap 34 at the base end of the weather strip 23. It is possible to prevent rainwater or the like from entering the vehicle interior through the gap 34.

  In addition, the inclined surface that increases in height toward the weather strip 23 of the ridge portion 50 is formed so that rainwater or the like that has entered the attachment portion 31 of the back door 32 is removed from the tip of the weather strip 23 as indicated by an arrow in FIG. It can be quickly guided to the part side (that is, the end part side). When the back door 32 is closed, rainwater or the like that has reached the weather strip 23 flows along the weather strip 23 and is guided to both side ends of the mounting portion 31 and dripped downward from these side end portions. It is drained out of the vehicle.

  If the slope 50 shown in FIG. 3 is not provided on the ridge 50 and rainwater or the like that has entered the mounting portion 31 stays on the ridge 50, the rainwater or the like that wraps around the ridge 50 becomes a gap 34. However, the inclined surface of the ridge portion 50 acts so as not to cause retention of rainwater or the like on the ridge portion 50.

  As described above, the first embodiment of the penetration-less grommet waterproofing structure according to the present invention is a penetration-less grommet waterproofing structure for routing the wire harness to the back door 32 of the vehicle. The grommet 10 includes a grommet cover 11 disposed on the door panel 33 of the back door 32, and a protrusion 50 formed integrally on the outer surface of the grommet cover 11, and the protrusion 50 is a grommet. The outer surface of the cover 11 is arranged so as to be parallel to and close to the weather strip 23 mounted on the door panel 32, and the length of the protrusion 50 is set so that the outer surface and the weather strip 23 on both sides of the grommet cover 11 are arranged. It is set to be longer than the distance connecting the gap 34 generated between the door panel 33 and the door panel 33. Further, the ridges 50 are formed on the outer surface of the grommet cover 11 without any breaks to the outer surfaces on both sides of the grommet cover 11, and both end portions of the ridges 50 are in close contact with the door panel 33.

  Therefore, in the first embodiment of the through-less grommet water stop structure according to the present invention, the gap 34 between the weather strip 23 and the door panel 33 generated when the through-less grommet 10 is attached to the attachment portion 31 of the back door 32 is projected. Since the strip 50 is covered from above like an umbrella, it is possible to prevent water from entering the passenger compartment.

(Second Embodiment)
Next, 2nd Embodiment of the penetration-less grommet water stop structure which concerns on this invention is described, referring FIG. 4 (a)-FIG. 5 and drawing already demonstrated.

The penetration-less grommet in the second embodiment of the penetration-less grommet water stop structure according to the present invention is compared with the penetration-less grommet of the first embodiment,
(A) The width of the lower part of the grommet cover is reduced,
(B) The protrusion is provided only on the front surface of the grommet cover without projecting the both ends thereof, and (C) The return portion is formed on the lower surface of the both ends of the protrusion,
Is different. Other configurations are the same as those in the first embodiment. Therefore, the same components as those of the first embodiment described above in the second embodiment are denoted by the same reference numerals, and description thereof is simplified or omitted.

  The width of the lower portion 19 of the grommet cover 11A is narrower than the width of the portion of the grommet cover 11A where the ridges 51 are arranged (more simply, the length of the ridges 51). The narrow grommet cover 11A is attached to the door panel 33 of the back door 32 so as to pass over the lower portion 19 of the grommet cover 11A.

  Therefore, although the length of the protrusion 51 is shorter than that of the protrusion 50 of the first embodiment, as shown in FIG. 4B, the weather strip generated at the place where the weather strip 23 rides on the grommet cover 11A. The distance between the two gaps 34 between the door 23 and the door panel 33 is longer. Therefore, the opening of the gap 34 is covered with the protrusion 51. Therefore, the penetrating-less grommet 10A can be reduced in size.

  The return portion 52 of the ridge portion 51 is a cutout portion formed so that the gap between the ridge portion 52 and the weather strip 23 increases toward the center of the grommet cover 11A. These return portions 52 are provided on the left and right portions of the lower surface of the ridge portion 51. The return portion 52 holds rainwater or the like to enter the gap 34 between the weather strip 23 and the door panel 33 in the gap and prevents the rainwater or the like from entering the gap 34.

  As is apparent from FIG. 5, an inclined surface that increases in height toward the weather strip 23 is also formed on the protrusion 51.

  Thus, 2nd Embodiment of the penetration-less grommet water stop structure which concerns on this invention is a penetration-less grommet water stop structure for routing a wire harness to the back door 32 of a vehicle, Comprising: A grommet cover 11A disposed on the door panel 33 of the back door 32, and a ridge 51 formed integrally on the outer surface of the grommet cover 11A. The ridge 51 is formed on the grommet cover 11A. It is disposed so as to be parallel to and close to the weather strip 23 mounted on the door panel 32 over the outer surface, and the length of the protrusion 51 is the outer surface on both sides of the grommet cover 11A, the weather strip 23 and the door panel 33. Is set to be longer than the distance connecting the gap 34 generated between the two. Further, the ridge 51 is formed on the outer surface of the grommet cover 11A without any breaks, excluding the outer surfaces on both sides of the grommet cover 11A, and compared with the width of the portion where the ridge 51 of the grommet cover 11A is disposed. The width of the portion of the grommet cover 11A where the weather strip 23 is disposed is narrow. Further, the protruding portion 51 further has return portions 52 formed on the lower surfaces of both side end portions so that the gap between the protruding portion 51 and the weather strip 23 increases toward the center of the grommet cover 11A. is doing.

  Therefore, in 2nd Embodiment of the penetration-less grommet water stop structure which concerns on this invention, the clearance gap 34 between the weather strip 23 and the door panel 33 which arises when the penetration-less grommet 10A is attached to the attachment part 31 of the back door 32 is projected. Since the strip 51 is covered from above like an umbrella, it is possible to prevent water from entering the passenger compartment. Moreover, the space | interval of the clearance gap 34 becomes narrow and can cover both clearance gaps reliably with the protrusion part 51 provided on the outer surface of the grommet cover 11A. Further, the return portion 52 holds rainwater or the like to enter the gap 34 in the gap and prevents the rainwater or the like from entering the gap 34.

  Now, in order to explain the further advantage of the present invention, a reference example is shown in FIG. FIG. 6A is a plan view showing a reference example of the penetration-less grommet water stop structure, and FIG. 6B is a cross-sectional view taken along the line VI (b) -VI (b) of FIG.

  The reference example of the penetration-less grommet water stop structure shown in FIG. 6A and FIG. 6B does not have a protrusion like the first embodiment of the penetration-less grommet water stop structure according to the present invention, Further, as in the second embodiment of the penetration-less grommet water stop structure according to the present invention, the width of the lower part of the grommet cover is narrowed, and the ridges are only on the front surface of the grommet cover without projecting the both side ends. And a structure in which return portions are formed on the lower surfaces of both end portions of the ridge portion is not provided.

  Therefore, rainwater or the like that has entered from the gap of the attachment portion 31 of the back door 32 reaches the weather strip 23 through the flow path 40 indicated by the arrow in FIG. Since the flow path 40 is orthogonal to the weather strip 23 and the gap 34 opens upward toward the flow path 40, rainwater or the like easily enters the vehicle interior from the gap 34.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  INDUSTRIAL APPLICABILITY The present invention can realize water stop with a simple configuration, for example, when a wire harness is routed by attaching a through-less grommet to a back door, and is widely applied to various vehicles having a door such as a back door. Can be used.

Fig.1 (a) is a top view which shows 1st Embodiment of the grommet water stop structure based on this invention, and FIG.1 (b) is I (b) -I (b) arrow sectional drawing of Fig.1 (a). It is. It is II-II arrow sectional drawing of Fig.1 (a). It is a side view of a 1st embodiment of a grommet water stop structure concerning the present invention. 4 (a) is a plan view showing a second embodiment of the grommet water-stopping structure according to the present invention, and FIG. 4 (b) is a sectional view taken along arrows IV (b) -IV (b) of FIG. 4 (a). It is. It is a side view of 2nd Embodiment of the grommet water stop structure which concerns on this invention. 6A is a plan view showing a reference example of the grommet water stop structure, and FIG. 6B is a cross-sectional view taken along the line VI (b) -VI (b) of FIG. 6A. It is a disassembled perspective view of the conventional grommet. It is the disassembled perspective view which looked at the grommet of FIG. 7 from the other direction. It is a perspective view which shows the attachment state of the grommet to a side door. It is a side view which shows typically the motor vehicle provided with the flip-up-type back door (namely, hatchback).

Explanation of symbols

10,10A Through-less grommet (Grommet)
11, 11A Grommet cover 12 Inner 13 Protector 14 Door harness (wire harness)
DESCRIPTION OF SYMBOLS 15 Hose-like part 16 Inner seal part 17 Outer seal part 19 Lower part of grommet cover 21 Indoor side inner plate 22 End face plate 23 Weather strip 30 Vehicle main body 31 Mounting part 32 Back door (door)
33 Door panel 34 Clearance 40 Flow path 50 Projection 51 Projection 52 Return part

Claims (5)

A grommet water stop structure for wiring a wire harness to a vehicle door,
The grommet includes a grommet cover disposed on the door panel of the door, and a ridge formed integrally on the outer surface of the grommet cover,
The grommet water stop structure, wherein the protruding portion is disposed so as to be parallel to a weather strip mounted on the door panel over the outer surface of the grommet cover. The length of the ridge is set to be longer than a distance connecting an outer surface on both sides of the grommet cover and a gap formed between the weather strip and the door panel, and the ridge is formed on the grommet. 2. The grommet water-stopping device according to claim 1, wherein the grommet water-stopping is formed on the outer surface of the cover without a break and on the outer surfaces on both sides of the grommet cover, and both end portions of the ridge portion are in close contact with the door panel. Construction.   The ridge is formed on the outer surface of the grommet cover without any breaks except for the outer surfaces on both sides of the grommet cover, and compared to the width of the portion of the grommet cover where the ridge is disposed, The grommet water stop structure according to claim 1, wherein a width of a portion of the grommet cover where the weather strip is disposed is narrow.   The grommet water stop structure according to any one of claims 1 to 3, wherein the protruding portion further has an inclined surface that increases in height toward the weather strip.   The protruding portion further has a return portion formed on a lower surface of both side end portions thereof so that a gap between the protruding portion and the weather strip expands toward the center of the grommet cover. The grommet water stop structure according to claim 3.

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