JPH04300788A - Automobile hood seal - Google Patents

Abstract

PURPOSE:To improve airtightness and also retain a suitable appearance by making a constitution in which a hollow seal lip is integrally formed on a forked base member in a hood seal for airtightly sealing the front end part of a hood panel. CONSTITUTION:A base member 11, composed of hard rubber or synthetic resin, etc., is linked to the front end part of an automobile hood panel 3 with a clip 15. The base member 11 is branched at a branch point A in a fore-and-aft direction making a forked cross section, and the front and the rear walls 13a and 13b of a soft hollow seal lip 13 are integrally formed on the front and the rear side hard pieces 11a and 11b respectively. In this case, a horizontal line (c), passing the lower end part C point of the rear side hard piece 11b is located to a lower side than a horizontal line (b), passing the lower end part B of the front side hard piece 11a. Also the C point is set nearer to a front FR side than the vertical line (a) of the branch point A. This can prevent the excessive deformation or the forward extrusion of the hollow seal clip 13.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood seal for airtightly sealing a small space formed at the front end of an automobile hood panel.

0002

2. Description of the Related Art Conventionally, a seal structure shown in FIG. 4 has been used at the front end 3a of a hood panel 3 of an automobile 1 shown in FIG. That is, 5 is a hood outer panel, 7 is a hood inner panel, and a hemmed portion 5a is formed at the tip of the hood outer panel 5.

On the other hand, 9 is a hood seal, and this hood seal 9 includes a base member 11 made of hard rubber or resin, and a soft rubber integrally formed on the front FR side of this base member 11. Alternatively, the hollow seal lip 13 is made of synthetic resin. This hollow sealing lip 13 basically consists of a front wall 13a and a rear wall 13b. The rigid base member 11 is fixed to the hood inner panel 7 using clips 15. 17 is a vehicle body side member with which the hood panel 3 is closed.

According to such a structure, the hood seal 9
A small vertical space α formed between the hood outer panel 5 and the vehicle body side member 13 is hidden by the hollow seal lip 13 constituting the hood panel 13, so that moisture, dust, etc. can flow from outside the vehicle into the hood panel 3 when the vehicle is running. can be prevented from entering.

[0005]

[Problems to be Solved by the Invention] However, with such a conventional structure of the hood seal 9, it cannot be said that the airtightness provided by the hollow seal lip 13 is necessarily perfect, and defects in appearance are likely to occur. There was an issue.

That is, since both the front wall 13a and the rear wall 13b are made of soft rubber or synthetic resin, the hollow seal lip 13 closes the hood panel 3 as shown in FIG. At the time of deformation, the front wall 13a of the hollow seal lip 13 protrudes forward by the dimension β, causing a waving phenomenon in the front wall 13a when viewed from the front, resulting in a state where sealing defects are likely to occur. This can easily lead to defects. Furthermore, in order to prevent the hollow seal lip 13 from being irregularly deformed when the hood panel 3 is closed, the hollow seal lip 13 must be lifted up by hand when closing the hood panel 3. The problem is that the operation is cumbersome.

[0007]The present invention solves the problems of the conventional hood seal, improves the airtightness of the hollow seal lip constituting the hood seal, and maintains a good appearance. The purpose is to provide a hood seal for automobiles.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a rigid base fixed to the hood panel of a vehicle in a small space formed between the hood panel and the vehicle body side member. In a structure in which the inside and outside of the small space are hermetically sealed by inserting a hood seal having a flexible hollow seal lip formed integrally with the base member, the hard base member is The front part of the joint between the base member and the hood panel branches in the front and back direction with a bifurcated cross section, and the front wall of the hollow seal lip is integrally molded on the front hard piece, and the rear hard piece The rear wall of the hollow seal lip is integrally molded on the piece, and the horizontal line passing through the lower end of the hard piece on the rear side is located lower than the horizontal line passing through the lower end of the hard piece on the front side. In addition, the automobile hood seal is configured such that the lower end of the hard piece on the rear side is located on the front side of the branch point.

[0009]

[Operation] According to this structure, since the lower end of the rear hard piece constituting the base member is located forward of the branching point of the base member, when the hood panel is closed,
The lower end of the rear hard piece comes into contact with the vehicle body side member, and there is no major change in shape between the rear hard piece and the front hard piece, and even after the hood panel is closed, the rear hard piece Because the piece and the front hard piece retain their initial shape,
Excessive deformation of the front and rear walls of the hollow sealing lip, which is integrally molded on each hard piece, is prevented.

[0010] Therefore, the front wall of the hollow seal lip does not protrude forward of the hood panel, and the sealing performance between the hood panel and the vehicle body side member is maintained well, and the appearance is also maintained well. brought about.

[0011]

[Embodiment] An embodiment of an automobile hood seal according to the present invention will be described in detail below with reference to FIGS. 1 and 2 in the drawings, with the same reference numerals attached to the same components as in the conventional structure. do.

FIG. 1 shows a basic embodiment of the present invention, in which a hood panel 3 of an automobile 1 shown in FIG.
This shows a case where the present invention is applied to the front end portion 3a of. That is, 5 is a hood outer panel, 7 is a hood inner panel, and a hemmed portion 5a is formed at the tip of the hood outer panel 5.

Reference numeral 9 denotes a hood seal, and the hood seal 9 includes a base member 11 made of hard rubber or synthetic resin, and a soft rubber or synthetic resin integrally formed with the base member 5. It is constituted by a hollow seal lip 13 consisting of. and the above-mentioned rigid base member 1
1 is connected to the hood inner panel 7 using a clip 15. 17 is a vehicle body side member with which the hood panel 3 is closed.

In the case of this embodiment, the rigid base member 11
At a branching point A located on the front FR side of the clip 15 that connects the base member 11, it branches in the front-rear direction with a bifurcated cross section, and the front wall 13a of the hollow seal lip 13 is integrated with the hard piece 11a on the front side. The rear wall 1 of the hollow seal lip 13 is formed on the hard piece 11b on the rear side.
3b are integrally molded.

A horizontal line c passing through point C of the lower end of the hard piece 11b on the rear side is located lower than a horizontal line b passing through point B on the lower end of the hard piece 11a on the front side, In addition, the lower end point C of the rear hard piece 11b is set to be located closer to the front FR side than the vertical line a of the branch point A.

According to the structure of this embodiment, as shown in FIG.
When the hood panel 3 is closed as shown in FIG.
Since the lower end point C of the base member 11 is located closer to the front FR than the branching point A of the base member 11, no major change occurs in the shapes of the hard pieces 11b and 11a. Even after the hood panel 3 is closed, the hard piece 11a and the hard piece 1
1b maintains its initial shape, the front wall 13a and rear wall 13b of the hollow seal lip 13, which are integrally formed between the rear hard piece 11b and the front hard piece 11a, Excessive deformation of the material is prevented.

Therefore, the front wall 13a of the hollow sealing lip 13
The front wall 13a does not protrude forward like in the past, and the seal between the hood panel 3 and the vehicle body side member 17 is maintained well, and the front wall 13a does not wave when viewed from the front, so the appearance is improved. Becomes good. Furthermore, food panel 3
The advantage is that no special operation is required to prevent the hollow seal lip 13 from being irregularly deformed when closing.

[0018]

As described above in detail, the automobile hood seal according to the present invention provides the following effects.

That is, since the hard piece constituting the base member is bifurcated, and the lower end of the rear hard piece is located forward of the branching point of the base member, when the hood panel is closed, There is no major change in the shapes of the rear hard piece and the front hard piece, and the front hard piece and the rear hard piece maintain their initial shapes even after the hood panel is closed. Therefore, it is possible to prevent the front and rear walls of the hollow sealing lip, which are integrally formed on each hard piece, from being excessively deformed.

Therefore, the front wall of the hollow seal lip does not protrude forward of the hood panel after the hood panel is closed, and no special operation is required to prevent such protrusion. The airtightness of the vehicle is improved, and the appearance of the vehicle can be maintained in good condition.

[Brief explanation of drawings]

FIG. 1 is a sectional view of essential parts showing an embodiment of an automobile hood seal according to the present invention.

FIG. 2 is a sectional view of a main part showing the operation mode of FIG. 1;

FIG. 3 is a side view showing the body of the automobile.

[Fig. 4] Cross-sectional view of essential parts showing an example of a conventional automobile hood seal

FIG. 5 is a sectional view of a main part showing the operation mode of FIG. 4;

[Explanation of symbols]

3...Hood panel, 5...Hood outer panel, 7...Hood inner panel, 9...Hood seal, 11...Base member, 11a...Hard piece (front side), 11b...Hard piece (rear side), 13...Hollow seal lip, 13a...front wall, 13b...
Rear wall, 15...Clip, 17...Vehicle body side member.

Claims (1)

[Claims] Claim 1: A hard base member fixed to the hood panel and a soft base member integrally formed with the base member are installed in a small space formed between a vehicle hood panel and a vehicle body side member. In the structure in which the inside and outside of the small space are hermetically sealed by inserting a hood seal having a hollow seal lip, the rigid base member is attached to a branch at the front portion of the connecting portion between the base member and the hood panel. It branches in the front-rear direction with a bifurcated cross section at a point, and the front wall of the hollow seal lip is integrally molded on the hard piece on the front side, and the rear wall of the hollow seal lip is integrally molded on the hard piece on the rear side. The horizontal line passing through the lower end of the rear hard piece is located lower than the horizontal line passing through the lower end of the front hard piece, and the lower end of the rear hard piece is below the branch point. An automobile hood seal characterized in that the hood seal is also located on the front side.