JPH0627255U - Grommet structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents water that enters from the mounting part of the grommet that connects the panels of the vehicle body to the connector connection part and prevents the connector from burning. [Structure] A narrow tube portion 9 for inserting and holding a cable 4, a panel fitting member 8, and a connecting portion 1 integrally connecting the narrow fitting portion 9 and the panel fitting portion 8 to a grommet 5.
0, and the water drop protection wall 14 is integrally formed over the entire circumference of the narrow tubular portion 9 or provided as a separate component. The water that has penetrated from the mounting portion of the grommet 5 is dammed by the water drop protection wall 14 and drops downward, so that the connector 1
Prevent reaching up to 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grommet structure used when wiring a panel of a vehicle or the like through the panel.

[0002]

[Prior art]

 Recently, with the progress of computerization of automobiles, many electric wires are installed between the panels of the vehicle body. For example, in a vehicle equipped with a so-called power window, power lock, door mirror, etc., as shown in FIG. 5, these operations are performed by the switch 1 attached to the door A or the switch attached to the vehicle compartment B (not shown). ).

Taking the power window as an example, the window glass 3 is moved up and down by the motor 2 built in the door A in accordance with the operation of the switch 1. The power source for driving the switch 1, the motor 2, and the motor 2 is used. (Not shown) are connected by a cable 4 arranged inside the door A and the inside of the vehicle compartment B, or between the door A and the vehicle compartment B. As described above, various electric components are routed by the cable 4 across the door A and the vehicle compartment B. At this time, the cable 4 is covered with the grommet 5 to protect it from water and dust from the outside world. .

FIG. 6 is an enlarged view of the wiring structure of the cable 4 between the door A and the vehicle compartment B shown in FIG. As shown in the figure, the grommet 5 is attached by a panel fitting portion 8 to an insertion opening formed in the door side panel 6 and the vehicle body side panel 7. The cable 4 passes through the inside of the grommet 5 and is routed between the door A and the vehicle compartment B. Such a grommet 5 has various structures. For example, as shown in FIG. 3, the grommet 5 has a narrow tubular portion 9 for inserting and holding the cable 4 therein and a concave groove for panel mounting. It is composed of a panel fitting portion 8 in which is formed and a narrow tube portion 9 and a connecting portion 10 which connects the panel fitting portion 8.

The grommet 5 is attached to both panels by fitting the concave grooves of the panel fitting member 8 into the insertion openings of the door side panel 6 and the vehicle body side panel 7. The grommet 5 mounted on the door side panel 6 and the vehicle body side panel 7 are connected to each other by, for example, a bellows-like hollow cylindrical body as shown in order to protect the exposed portion of the cable 4. The cable 4 penetrates the inside of the grommet 5 and the hollow cylindrical body, and the connector 11 is connected to the end thereof.

[0006]

[Problems to be solved by the device]

 The grommet is a member that is fitted onto the cable or pipe to protect the parts of the cable or pipe that are attached to the door or the vehicle body panel from the water and dust from the outside, but the grommet is attached to the grommet insertion opening of the panel. When this is done, although high adhesion can be obtained between the grommet panel fitting member and the panel in the initial stage of mounting, the shape of the grommet panel fitting member changes due to opening and closing of the door for a long period of time, or the fitting part material. Due to deterioration of the soft rubber or soft plastic constituting the panel, the adhesion with the panel is reduced.

FIG. 4 is a view showing a state in which the grommet 5 shown in FIG. 3 is attached to the grommet insertion openings 12 of the door side panel 6 and the vehicle body side panel 7 by the panel fitting member 8. Due to the shape change or deterioration of the panel fitting member 8 of the grommet 5, a gap is formed between the panel grommet insertion opening 12 of the panel and the panel fitting member 8, and the gap is removed from the outside by running in the rain or washing the car. Water 13 flows into the passenger compartment B side and the door A side.

Here, when the connector 11 is below or horizontal to the mounting position of the grommet 5, the water 13 that has flowed in from the grommet insertion port 12 has the connecting portion 10, the narrow tubular portion 9 and the cable 4 of the grommet 5. It reaches the connector 11 through the surface of. The water 13 reaching the connector 11 further penetrates into the connection portion of the connector 11 and invades the terminal, which causes the connection failure or burnout of the connector 11.

Therefore, conventionally, with respect to the water from the outside, the connector 11 is filled with waterproof grease or the tape is wound to prevent the water from entering the connector connection portion. As a result, the cost of waterproof grease has increased and the workability of winding tape has deteriorated.

[0010]

[Means for Solving the Problems]

 The above-mentioned problems of the present invention include a narrow tube portion for inserting and holding a cable or a pipe therein, a panel fitting portion for mounting the cable or pipe in the insertion port, and the narrow tube portion and the panel fitting portion. The grommet structure is characterized in that it is composed of a connecting portion that is integrally connected, and that a water drop protection wall is integrally formed or provided as a separate component over the entire circumference of the narrow tubular portion.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing an example of a grommet structure according to the present invention. The grommet 5 includes a narrow tubular portion 9 for inserting and holding the cable 4 therein, a panel fitting portion 8 and a connecting portion 10 for connecting the narrow tubular portion 9 and the panel fitting portion 8. A water drop protection wall 14 is provided over the entire circumference.

The panel fitting portion 8 is formed of an annular thick wall and has a groove formed on the outer peripheral surface thereof. By inserting the groove into an insertion hole formed in the panel, the grommet is formed. Attach G5 to the panel. The narrow tube portion 9 and the panel fitting portion 8 are integrally connected by a connecting portion 10 made of soft rubber or the like, the diameter of which gradually increases from the narrow tube portion 9 toward the panel fitting portion 8.

As shown in FIGS. 5 and 6, when the doors A, B, etc. are installed between panels, the grommet 5 has a panel fitting portion 8 and a panel fitting of the other grommet 5. The portion 8 and the portion 8 may be connected to each other by a bellows-like hollow cylindrical body as shown in the drawing to protect the exposed portion between the panels of the cable 4. The cable 4 penetrates the inside of the grommet 5 and the hollow cylindrical body, and has a connector 11 at its end.

The water drop protection wall 14 may be formed integrally with the narrow tubular portion 9 or may be externally fitted as a separate component. Further, the water drop protection wall 15 may be attached at any position on the narrow tube portion 9. The shape of the water drop protection wall 14 is also not particularly limited, but may be any shape as long as it is formed over the entire circumference of the surface of the narrow tubular portion 9, and may be annular or any other shape.

FIG. 2 is a view showing a state in which the grommet structure shown in FIG. 1 is mounted between the door A and the vehicle compartment B. The grommet 5 is attached to the door A and the vehicle compartment B by fitting the panel fitting member 8 into the grommet insertion opening 12 formed in the door side panel 6 and the vehicle body side panel 7.

Here, due to the shape change and deterioration of the grommet 5, a gap is formed between the panel fitting member 8 and the grommet insertion opening 12 of the panel, and the tightness of adhesion between the grommet 5 and the panel is deteriorated. It is assumed that the water 13 from the outside enters through the formed gap. The water 13 entering from the outside travels to the cable 4 along the surface of the connecting portion 10 of the grommet 5, but is blocked by the water drop protection wall 14 attached to the narrow tubular portion 9 and drops downward, so that the cable 4 and the connector 11 at its tip are never reached. As described above, the presence of the water drop protection wall 14 can prevent the connection failure and the burnout of the connector 11 due to the water 13 that has entered from the outside.

In the above embodiment, the case where the grommet 5 is mounted between the door A and the vehicle compartment B has been described, but the mounting location of the grommet 5 is not limited to between the door A and the vehicle compartment B. The grommet structure according to the present invention can be widely applied, for example, wiring between the engine room and the dash panel.

[0018]

[Effect of device]

 As described above, according to the grommet structure according to the present invention, the water drop protection wall is integrally formed or attached as a separate component, so that water invading from the outside can be blocked in the middle and dropped downward, and the connector connection part can be dropped. It is possible to reliably prevent the connection from reaching the end, and it is possible to prevent connection failure and burnout of the connector.

Further, unlike the prior art, it is not necessary to fill the connector with grease for preventing water from invading, and the cost can be reduced. Furthermore, the water drop protection wall does not have to have a complicated structure and shape, and a simple shape such as an annular shape can obtain sufficient effects. Also, even in the attached structure, it is integrally molded or fitted as a separate member. This is extremely easy to implement because it only needs to be done.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a grommet structure according to the present invention.

FIG. 2 is a view showing a state in which the grommet structure according to the present invention is mounted between a door and a vehicle compartment.

FIG. 3 is a diagram showing an example of a conventional grommet structure.

FIG. 4 is a diagram showing a state in which a conventional grommet structure is mounted between a door and a vehicle compartment.

FIG. 5 is a diagram showing an example of a mounting location of a grommet structure.

FIG. 6 is an enlarged cross-sectional view of a main part of FIG.

[Explanation of symbols]

 4 cable 5 grommet 6 door side panel 7 vehicle body side panel 8 panel fitting member 9 narrow tube part 10 connecting part 11 connector 12 grommet insertion port 14 water drop protection wall A door B vehicle compartment

Claims (1)

[Scope of utility model registration request] 1. A grommet structure mounted on an insertion hole formed in a panel or the like, wherein the grommet structure includes a narrow tubular portion for inserting and holding a cable or a pipe therein, and the insertion hole. A panel fitting part for mounting and a narrow tube part and a connecting part that integrally connects the panel fitting part are formed, and water drop protection by integral molding or separate parts over the entire circumference of the narrow tube part. Grommet structure characterized by having a wall.