JPH0343864Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a structure for preventing bulging of a sealing member, for example, a structure for preventing bulging of a sealing member used for sealing various lamps of an automobile.

2. Description of the Related Art In general, various types of lamps such as rear combination lamps installed in automobiles are required to have dust resistance, water resistance, etc., and are therefore attached to the body through a sealing member. FIG. 3 shows a conventional lamp mounting structure of this type. In the drawings, 1 is a body which is an attached object, 2 is a lamp housing which is a first member in which a bulb is housed, and 3 is an endless body made of an elastic body such as rubber that is attached to the outer peripheral flange portion 4 of the lamp housing 2. This seal member 3 has an outer circumferential surface 5 formed into a curved shape, and an outer circumferential flange portion 4 of the lamp housing 2 between inner flange portions 6a and 6b formed in two stages on the inner circumferential surface 6. A mounting groove 8 is formed into which the end edge 7 of the lamp housing 2 is fitted, and bifurcated tongue pieces 9a and 9b, which are sandwiched between the flange portion 4 of the lamp housing 2, are protruded at a plurality of locations on the inner flanges 6a and 6b. It was established. Reference numeral 10 denotes a lamp lens, which is a second member held opposite to the lamp housing 2. The outer peripheral flange portion 11 of the lamp lens 10 is connected to the outer peripheral flange portion 4 of the lamp housing 2 via the tongue piece 9a of the seal member 3. Polymerize to Reference numerals 12 denote the outer peripheral flange portions 4 and 11 of the lamp housing 2 and the lamp lens 10, and the tongue piece 9a of the seal member 3;
a mounting screw 1 that is passed through the overlapped portion 13 with 9b;
Reference numeral 4 designates an annular grommet that is fixedly attached to the threaded portion of the body 1. The overlapping portion 13 is screwed onto the body 1 by screwing the mounting screw 12 into the grommet 14 and tightening the grommet.

Problems to be solved by the invention The above lamp housing 2 and lamp lens 1
0 and the overlapping portions 13 of the outer peripheral flange portions 4 and 11 of the sealing member 3 and the tongue pieces 9a and 9b of the sealing member 3 with the mounting screws 12.
When the seal member 3 is tightened and screwed onto the body 1, the tongue pieces 9a and 9b of the seal member 3 are compressed by the tightening force of the mounting screw 12 and extend outward along the flange portion 4 of the lamp housing 2. . Therefore, the outer circumferential surface 5a of the sealing member 3 near the tongue pieces 9a, 9b
However, there was a problem in that it bulged outward as shown by the dashed dotted line in FIGS. 3 and 4, resulting in an extremely unsightly appearance. Therefore, conventionally, the opposing inner surfaces 15a of the tongue pieces 9a and 9b of the seal member 3,
15b is fixed to the outer circumferential flange portion 4 of the lamp housing 2 with an adhesive or the like to prevent the outer circumferential surface 5a of the sealing member 3 from swelling. However, this requires adhesive and
Since the adhesive must be applied to the sealing member 3 or the lamp housing 2, there are problems in that the cost is high and the lamp assembly work is extremely difficult.

Means for Solving the Problems The present invention was proposed in view of the above problems, and includes a first member having a flange portion on the outer periphery, and an outer periphery flange portion of the first member on the inner peripheral surface. an endless seal member formed with a mounting groove into which the
a second member that is held opposite to the first member and has a flange portion on its outer periphery; The outer peripheral flange portions of the members of item 2 are overlapped, and the overlapping portions are screwed onto the object to be attached using mounting screws at appropriate locations, and a cutout groove is formed at a desired position outside the portion of the sealing member through which the mounting screw passes. It is.

After the seal member is attached to the first member by fitting the attachment groove of the seal member into the outer periphery flange portion of the first member, the seal member is attached to each flange portion of the first member and the second member. When the overlapping portion of the seal member is tightened with a mounting screw and screwed onto the object to be mounted, the tightening force of the mounting screw compresses the mounting screw penetration portion of the seal member, and the mounting screw penetration portion of the seal member becomes the first The sealing member extends outwardly along the outer peripheral flange portion of the member, and a notch groove is formed at a desired position on the outer side of the mounting screw penetration portion of the sealing member.
The outward extension of the seal member is absorbed by the notch groove of the seal member, thereby preventing the outer peripheral surface of the seal member from bulging.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. Furthermore, the third
Components that are the same as those shown in the figures and FIG. The features of this invention are:
As shown in FIGS. 1 and 2, a notch with a predetermined width that opens into the mounting groove 8 is formed in the side wall 21 of the mounting groove 8 of the seal member 3 on the outside of the mounting screw penetration portion of the seal member 3. In addition to forming the groove 22, a notched groove 24 consisting of a shallow-bottom groove 24a and a deep-bottom groove 24b is also formed on the abutting surface 23 of the outer periphery of the lamp lens 10 with the flange 11.

Therefore, when assembling the lamp to body 1,
First, the seal member 3 is attached to the lamp housing 2 by fitting it into the mounting groove 8 of the seal member 3 in the end edge 7 of the lamp housing 2, and then the lamp lens 10 is held facing the lamp housing 2, and , the flange portions 4 and 11 of the lamp housing 2 and the lamp lens 10, and the seal member 3.
Attach the overlapping portion 13 with the tongue pieces 9a and 9b using the screw 1.
Screw it onto body 1 with 2. Then the above mounting screw 8
The tongues 9a and 9b of the seal member 3 are compressed by the tightening force and extend outwardly along the outer peripheral flange portion 4 of the lamp housing 2. Since the notched grooves 22 and 24 are formed, the outward extension of the tongue pieces 9a and 9b of the sealing member 3 is absorbed and prevented by the notched grooves 22 and 24. Therefore, it is possible to reliably prevent the outer circumferential surface 5a of the seal member 3 from swelling.

In the above embodiment, a case was explained in which the bulging of a sealing member used for sealing various lamps of an automobile is prevented, but the present invention is not limited to this, and any and all methods for preventing the bulging of a sealing member are described. Can be applied in cases.

Effects of the Invention According to the structure for preventing bulges of a seal member according to the present invention, bulges of a seal member can be reliably prevented with a simple structure. Therefore, for example, if applied to seals for various automobile lamps,
It is possible to eliminate the conventional bonding work using adhesives, which makes it possible to reduce costs, and the workability of assembling the lamp is extremely good.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main part of the bulge prevention structure according to the present invention, and FIG. 2 is a perspective view of the main part of the sealing member. FIG. 3 is a longitudinal sectional view of a conventional bulge prevention structure, and FIG. 4 is a schematic perspective view of a sealing member. DESCRIPTION OF SYMBOLS 1... Attachment object, 2... First member, 3... Seal member, 4... Outer peripheral flange portion, 6... Inner peripheral surface, 8... Mounting groove, 10... Second member, 11 …
...Outer flange part, 12...Mounting screw, 22, 2
4... Notch groove.

Claims (1)

[Scope of utility model registration request] a first member having a flange portion on its outer periphery; an endless seal member having a mounting groove formed on its inner peripheral surface into which the outer periphery flange portion of the first member fits; and a seal member held oppositely to the first member. and a second member having a flange portion on the outer periphery;
The outer flange portions of the first member and the second member are overlapped via a sealing member attached to the outer flange portion of the member, and the overlapping portion is screwed to the object to be attached using a mounting screw. A structure for preventing bulge of a seal member, characterized in that a notch groove is formed at a desired position outside of a portion of the seal member through which a mounting screw passes.