JP4127079B2 - Grommet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grommet to be attached to a wire harness. More specifically, the grommet to be attached between a vehicle body and left and right doors can be shared, and a right door and a left door can be distinguished. is there.
[0002]
[Prior art]
Conventionally, with a wire harness routed in an automobile, when a wire harness is routed through a vehicle body panel that partitions the outside and the interior of the vehicle, a grommet is externally attached to the wire harness, and the grommet is engaged with a through hole in the vehicle body panel. This prevents water from entering the room from the outside.
[0003]
Among the grommets of this type, the present applicant provides a grommet 1 shown in FIG. 5 in Japanese Patent Application Laid-Open No. 2002-374612 as a grommet to be mounted between a vehicle body and a door. The grommet 1 is formed by continuously providing large-diameter cylindrical portions 3 and 4 at both ends of the bellows-shaped cylindrical portion 2, and the resin locked in the through-holes of the vehicle body panel and the door panel in the large-diameter cylindrical portions 3 and 4. An inner 5 (resin inner on the large diameter cylindrical portion 3 side is not shown) is fitted. (Patent Document 1)
[0004]
Further, in order to facilitate the attaching operation of the grommet to the vehicle body panel and the door panel, the present applicant provides a resin inner 6 shown in FIG. The resin inner 6 is fitted into the large-diameter cylindrical portion 8 of the grommet 7, and one locking portion of the resin inner 6 is used as a fixed lock portion 6 a having no flexibility, while the other engagement. The stop portion is easily bent inward as a flexible lock portion 6b having flexibility. When attaching the grommet 7 to the through hole provided in the vehicle body panel or the door panel, the fixed lock portion 6a is arranged at the lower position, and the fixed lock portion 6a is inserted and fixed at the lower end edge of the through hole of the vehicle body panel. The upper flexible lock portion 6b is inserted and locked to the upper edge of the through hole while being bent inward. Thus, the grommet mounting workability can be improved by first locking and fixing the resin inner fixed lock portion as the lower position and then locking and fixing the upper flexible lock portion.
[0005]
[Patent Document 1]
JP-A-2002-374612 [0006]
[Problems to be solved by the invention]
In the production of grommets, it is preferable from the viewpoint of cost reduction to share the grommets for the left and right doors rather than to manufacture them individually. However, when the grommet 7 for the left and right doors is shared, the grommet 7 can be specified for the left door and the right door depending on the mounting direction of the resin inner 6. However, since the grommet is substantially the same shape, it can be easily distinguished. Absent. If the left and right mounting positions are wrong, the fixed lock portion 6a of the resin inner 6 is positioned upward and the flexible lock portion 6b is positioned downward, causing problems such as poor workability.
[0007]
Specifically, in the grommet 7A in which the resin inner 6 is attached to the left door shown in FIG. 7A, the fixed lock portion 6a of the resin inner 6 is downwardly moved as shown in FIG. The part 6b is located above. However, if the left door grommet 7A is mistakenly attached to the right door as shown in FIG. 7C, the grommet 7 and the resin inner 6 rotate 180 °, and the result is shown in FIG. 7D. Thus, the fixed lock portion 6a is positioned upward and the flexible lock portion 6b is positioned downward. In this case, after the fixed lock portion 6a is locked to the upper edge of the through hole of the door panel, the flexible lock portion 6b is locked to the lower edge of the through hole, and the fixed lock portion 6a is first attached to the through hole. Since it locks to the upper edge, it is less stable and difficult to attach than when the fixed lock portion 6a is locked to the lower edge of the through hole.
[0008]
The present invention has been made in view of the above problems, and the grommet with a resin inner used for the left and right doors can be easily distinguished from the right door and the left door. The challenge is to provide a grommet that can be in the lower position.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is attached to a wire harness that extends from the vehicle body side to the left and right door sides of an automobile, and has a large-diameter cylindrical portion on both sides that is locked to a through hole in the vehicle body panel and the door panel. A grommet body connected between at least a portion of the large-diameter cylindrical portion by a cylindrical portion provided with a bellows portion; and a resin inner for locking a vehicle body fitted and fixed to the large-diameter cylindrical portion; A grommet that can be bent in both the left and right directions,
Both the right-side display and the left-side display that can be recognized from the outside are provided on the inner surface of the large-diameter cylindrical portion of the grommet body, and the right-side display or the left-side display is provided on the resin inner that is fitted and fixed to the large-diameter cylindrical portion. Provide a shield that covers either one of them
Change the mounting direction of the resin inner with respect to the large-diameter cylindrical portion and conceal either the right side display or the left side display with the shielding portion and expose the other side to determine whether the left door or the right door is used. A grommet characterized in that it can be identified is provided.
[0010]
With the above configuration, the right door grommet and left door display can be visually recognized from the outside without being covered by the shielding part provided on the resin inner, of the right side display and the left side display written on the large diameter cylindrical part. A grommet can be easily distinguished. That is, it can be recognized at a glance that the grommet showing the right side display is the right door grommet and the grommet showing the left side display is the left door grommet.
[0011]
Specifically, the right side display and the left side display are provided at symmetrical positions on the inner surface of the hollow portion of the large-diameter cylindrical portion, and the resin inner that is fitted and fixed to the large-diameter cylindrical portion is disposed on the distal end side of the peripheral wall. A fixed lock portion and a flexible lock portion are provided at symmetrical positions, and the shielding portion protrudes from the inner surface of the peripheral wall of the resin inner on the flexible lock portion side,
For the right door and left door, the resin inner is fixed 180 degrees out of phase with the large-diameter cylindrical portion,
For the right door, the left side display is concealed by the shielding part to expose only the right side display on the fixed lock part side, and for the left door, the right side display is concealed by the shield part and the left side on the fixed lock part side. Only the display is exposed, and the lock portion at a position where the left and right displays are always set is the fixed lock portion.
[0012]
With the above configuration, just changing the direction of the resin inner to be assembled to the large-diameter cylindrical part of the grommet body, only the right side display is exposed in the right door grommet, and the lock part where the right side display is always fixed is fixed. It can be recognized that it is a lock part. And, regardless of the assembly direction of the resin inner with respect to the large diameter cylindrical portion, either the right side display or the left side display is hidden and the other side is exposed, so the exposed display side grommet may be used. There is no mistake in assembly when assembling the resin inner to the large-diameter cylinder.
[0013]
When the grommet is attached to the wire harness, right side display and left side display are performed. Therefore, the right door grommet is definitely attached to the right door wire harness, and the left door grommet is definitely attached to the left door wire harness. When the right door grommet is bent and attached to the right door side at the bellows portion, the fixed lock portion at the position with the right side display becomes the lower position. The same applies to the left door side. Therefore, after locking the fixed lock part in the lower position to the lower edge of the through hole of the panel, it can be locked to the upper edge of the through hole while flexing the flexible lock part. Can be attached to the through hole.
[0014]
In addition, the said shielding part is not restricted to the structure made to protrude from a surrounding wall inner surface, The length of the surrounding wall itself may be enlarged partially, and a display may be concealed when a resin inner is fitted in a large diameter cylindrical part.
[0015]
It is preferable that the right side display formed on the inner surface of the enlarged diameter cylindrical portion of the grommet body is “RIGHT” and the left side display is “LEFT”, which are integrally provided by raising during molding.
The left and right displays are not limited to the above display, and any display may be used as long as the left and right can be identified, such as the part numbers of grommets and wire harnesses.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show an embodiment of the present invention. A grommet G is formed of a grommet body 10 formed of rubber or elastomer and resin inner members 18 and 20.
[0017]
The grommet body 10 is provided with large-diameter cylinder parts 11 and 12 at both ends, and the bellows cylinder part 13, the small-diameter cylinder part 14, the bellows cylinder part 15, the small-diameter cylinder part 16 and the large-diameter cylinder part 12 are continuously provided from the large-diameter cylinder part 11 side. Are integrally molded. A resin inner 20 is engaged with the large-diameter cylindrical portion 11 on the door side, and a resin inner 18 is engaged with the large-diameter cylindrical portion 12 on the vehicle body side.
The grommet G is attached between the vehicle body and the right door and between the vehicle body and the left door in a state where the grommet G is sheathed on the wire harness, and one large-diameter cylindrical portion 11 is connected to a through hole (not shown) of the door panel. And the other large-diameter cylindrical portion 12 is locked in a through hole (not shown) of the vehicle body panel.
[0018]
The large-diameter cylindrical portion 12 having an elliptical cross section that is locked in a through hole (not shown) of the vehicle body panel includes an annular recess 12a for locking the resin inner 18 for locking the vehicle body, and a large-diameter cylindrical portion. 12 is provided with a seal lip 12b.
On the other hand, in the large-diameter cylindrical portion 11 having an elliptical cross section that is locked in a through hole (not shown) of the door panel, a recess (not shown) for locking the protrusion 24 provided on the resin inner 20 for locking the vehicle body. And a seal lip 11b is provided at the tip of the large-diameter cylindrical portion 11.
[0019]
As shown in FIG. 2, on the inner surface of the large-diameter cylindrical portion 11 to which the resin inner 20 is attached, on the both sides on the long axis side symmetrical to the axis of the bellows cylindrical portion 13 continuous to the large-diameter cylindrical portion 11, The characters “LEFT” for display and “RIGHT” for right display are provided integrally by embossing.
[0020]
The display positions of the characters “LEFT” and “RIGHT” are shown in FIG. 2A with the grommet G spanned between the vehicle body and the left door, and the characters “LEFT” It is set so that the letter “RIGHT” is on the lower side. Therefore, when the grommet G is disposed between the vehicle body and the right door and the grommet G is rotated 180 °, as shown in FIG. 2B, the characters “RIGHT” are on the lower side and the characters “LEFT” are on the upper side. It is positioned to be.
[0021]
On the other hand, as shown in FIG. 3, the resin inner 20 attached to the large-diameter cylindrical portion 11 has a shape having an oval peripheral wall along the inner peripheral surface of the large-diameter cylindrical portion 11, and has one end in the long axis direction. A fixed lock portion 21 that does not have flexibility is provided, and a locking claw 21 a that locks the peripheral edge of the through hole of the door panel is provided in the fixed lock portion 21. And the flexible lock 22 which has flexibility is provided in the other end part which opposes, and the latching claw 22a is provided also in this flexible lock part 22. FIG. A rib is protruded inward from the inner end of the inner surface of the peripheral wall on the flexible lock portion 22 side, and the rib is provided with any of the letters “LEFT” and “RIGHT” indicated on the large-diameter cylindrical portion 11. The shielding part 23 that covers one of them is used. Further, on the outer peripheral surface of the resin inner 20, projections 24 that are engaged with the recesses of the large-diameter cylindrical portion 11 are provided in four directions.
[0022]
When the resin inner 20 is fitted along the inner peripheral surface of the large-diameter cylindrical portion 11 of the grommet main body 10, the shielding portion 23 of the resin inner 20 is changed to 180 ° by changing the mounting direction of the resin inner 20 180 °. One of the characters “LEFT” and “RIGHT” written in the part 11 is covered and the other is exposed.
At this time, as shown in FIG. 4A, the grommet GA in which the letters “LEFT” appear is a grommet for the left door attached between the vehicle body and the left door. As shown in B), the grommet G-B in which “RIGHT” appears is a grommet for the right door that is attached between the vehicle body and the right door.
[0023]
By providing the shielding part 23 on the flexible lock part side, both the left door grommet shown in FIG. 4A and the right door grommet shown in FIG. The lock portion on the side where the display is exposed is the fixed lock portion 21, and the lock portion on the side where the display of “RIGHT” is exposed is the fixed lock portion 21.
[0024]
The bellows tube portions 13 and 15 of the grommet body 10 have a shape in which trough portions and mountain portions are alternately continued to provide flexibility. The bellows tube portion 13 follows the opening and closing of the door and rotates around the small diameter tube portion 14. Further, the bellows tube portion 15 is not bent according to the arrangement shape in advance, but can be bent as a bellows shape, thereby allowing the left and right doors to be shared.
[0025]
With the above configuration, either one of the letters “LEFT” and “RIGHT” marked on the large-diameter cylindrical portion 11 of the grommet body 10 is covered with the resin inner 20 by the shielding portion 23 of the resin inner 20. It can be recognized at a glance that the grommet GA having the letters “LEFT” is attached to the wire harness for the left door that spans between the vehicle body and the left door. On the contrary, it can be recognized at a glance from the display that the grommet GB having the characters “RIGHT” is attached to the wire harness for the right door that extends between the vehicle body and the right door.
[0026]
When the grommet G is attached to the left door wire harness and the right door wire harness according to the letters “LEFT” and “RIGHT”, the wire harness is bridged between the vehicle body and the door, and the grommet G When the diameter cylinder portion 11 is passed through the through hole of the door panel and the resin inner 20 is locked to the periphery of the through hole, the fixed lock portion 21 is always positioned at the lower edge of the through hole, and the flexible lock portion 22 is above the through hole. Located on the edge. Therefore, after locking the fixed lock portion 21 to the lower end edge of the through hole, the flexible lock portion 22 can be locked to the upper end edge of the through hole while flexing, and the grommet G can be easily moved to the side in a stable state. It can be attached to the through hole of the door.
[0027]
【The invention's effect】
As is clear from the above description, according to the present invention, in the grommet composed of the grommet main body and the resin inner for locking the vehicle body, when the resin inner is fitted into the large diameter cylindrical portion of the grommet main body and assembled, Either the right side display or the left side display written on the large-diameter cylinder part is not covered by the resin inner shielding part and can be recognized visually from the outside, and only the other display is exposed and can be recognized from the outside. .
Therefore, the grommet body and resin inner can be specified as left door grommet and right door grommet simply by changing the assembly direction of the resin inner, while the left and right grommet is used, and the operator can use it for either the left or right door. However, it can be distinguished at a glance by the display.
[0028]
And when assembling the resin inner to the large-diameter cylindrical part, only one display is exposed in any direction, so it is sufficient to use an exposed display grommet, and the resin inner is mistakenly assembled to the large-diameter cylindrical part. This does not mean that workability can be improved.
[0029]
Further, the right side display and the left side display are provided at the vertically symmetrical position of the large-diameter cylindrical portion of the grommet, while the resin inner is closer to the flexible lock portion than the fixed lock portion and the flexible lock portion provided at the vertically symmetrical position. When the shielding portion is provided and the resin inner is assembled to the large-diameter cylindrical portion of the grommet body, the display on the flexible lock portion side is always hidden and the display on the fixed lock portion side is exposed. In addition, when the right door grommet is mounted on the right door wire harness and locked in the through hole of the door panel, the display side fixed lock portion is in the lower position. Similarly, the left door grommet is on the display side. The fixed lock is in the lower position. Thus, after locking the fixed lock portion to the lower end edge of the through hole, the flexible lock portion can be locked to the upper end edge of the through hole while flexing, and the grommet can be easily attached to the left and right doors in a stable state. It can be attached to the through hole.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a grommet.
FIG. 2A is a large-diameter cylindrical portion in a state where a grommet is attached to a left side door, and FIG. 2B is a large-diameter cylindrical portion in a state where a grommet is attached to a right side door.
3A is a front view of a resin inner, and FIG. 3B is a cross-sectional view.
4A is a large-diameter cylindrical portion of the left side door grommet, and FIG. 4B is a large-diameter cylindrical portion of the right side door grommet.
FIG. 5 is a diagram showing a conventional example.
FIG. 6 is a view showing another conventional example.
FIG. 7 is a drawing showing problems of another conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Grommet main body 11 and 12 Large diameter cylinder part 20 Resin inner 21 Fixed lock part 22 Flexible lock part 23 Shielding part G Grommet

Claims (4)

At least a portion between the large-diameter cylindrical portion and the large-diameter cylindrical portion on both sides that is attached to a wire harness that extends from the vehicle body side to the left and right door sides of the automobile and that is locked to the through hole of the vehicle body panel and the door panel. A grommet body connected by a cylindrical portion provided with a bellows portion, and a resin inner for locking a vehicle body fitted and fixed to the large diameter cylindrical portion, and the bellows portion can be bent in either the left or right direction. It is a grommet for both left and right,
Both the right-side display and the left-side display that can be recognized from the outside are provided on the inner surface of the large-diameter cylindrical portion of the grommet body, and the right-side display or the left-side display is provided on the resin inner that is fitted and fixed to the large-diameter cylindrical portion. Provide a shield that covers either one of them
Change the mounting direction of the resin inner with respect to the large-diameter cylindrical portion and conceal either the right side display or the left side display with the shielding portion and expose the other side to determine whether the left door or the right door is used. Grommet characterized by being able to be identified. The right side display and the left side display are provided at symmetrical positions on the inner surface of the hollow part of the large-diameter cylindrical part, and the resin inner that is fitted and fixed to the large-diameter cylindrical part is provided with a fixed lock part on the distal end side of the peripheral wall. A flexible lock portion and a symmetrical position, and the shielding portion projects from the inner surface of the inner wall of the resin lock on the flexible lock portion side,
For the right door and left door, the resin inner is fixed 180 degrees out of phase with the large-diameter cylindrical portion,
For the right door, the left side display is concealed by the shielding part to expose only the right side display on the fixed lock part side, and for the left door, the right side display is concealed by the shield part and the left side on the fixed lock part side. The grommet according to claim 1, wherein only the display is exposed, and the lock portion at a position where the left and right display is always provided is a fixed lock portion. The grommet according to claim 1 or 2, wherein the right side display is "RIGHT" and the left side display is "LEFT" by embossing. The grommet according to claim 1 or 2, wherein the right side display and the left side display are provided by embossing with a grommet part number or a wire harness part number.

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