JPH09282909A - Vehicle lighting - Google Patents

Abstract

(57) [Abstract] [Problem] In a conventional vehicle lighting device of this type, a packing is temporarily held by a mounting bolt at the tip of a vehicle body mounting leg, and when the vehicle body is mounted, the vehicle body mounting leg is also compressed and a flange is used. There is a problem in that the amount of compression varies and water is flooded. According to the present invention, a vehicle body mounting leg of a lamp body.
Is attached to the tip of the mounting bolt 4 having a collar portion 41 having a diameter φ1 appropriately larger than the diameter φ2 of the vehicle body mounting leg 22.
Is embedded in the packing 3, and an opening 31 having a diameter φ3 that is substantially the same as the diameter of the vehicle body mounting leg 22 is provided. The opening 31 is formed by utilizing the elasticity of the member on which the packing 3 is formed. Since the vehicular lamp 1 is configured such that the packing 3 is temporarily held by passing 41, the mutual positions of the vehicular lamp 1 and the vehicle body 10 can be kept constant when the vehicle lamp 1 is attached to the vehicle body 10. To do.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly, to a vehicular lamp configured to employ a packing for waterproofing when the vehicular lamp is mounted on a vehicle body such as an automobile. It is related.

[0002]

2. Description of the Related Art FIG. 5 shows an example of the structure of a conventional vehicle lighting device 90 of this type. FIG.
When the lamp body 91 such as the housing is assembled to the vehicle body 80 (see FIG. 6), a packing 92 formed of, for example, foam rubber is compressed between the vehicle body 80 and the rear surface of the vehicle lamp 90. Flange 91a for preventing water from entering the side
Is provided.

At this time, the packing 92 is required to be temporarily held at a predetermined position on the side of the lamp body 91 for the purpose of simplifying the assembling process and the like. Body mounting leg 9 provided on the body 91
At a position corresponding to the mounting bolt 93 of 1b, for example, when the diameter of the mounting bolt is 5 mm, the through hole has a diameter of 2 mm. By providing and inserting the vehicle lighting device 9,
It is assumed that the temporary holding is performed in a state where the specified position is maintained with respect to 0 and the vehicle body 80.

[0004]

However, in the above-described conventional vehicle lighting device 90, when the vehicle lighting device 90 is assembled to the vehicle body 80, as shown in FIG. The packing 92 is also compressed between the vehicle body 80 and the vehicle body 80. Even if the torque for tightening the nut 94 is controlled by a torque wrench or the like, a difference in hardness T of the packing 92 causes a difference in the compression thickness T.

This obviously affects the dimension D for compressing the packing 92 by the flange 91a such that the design value is insufficient, and the desired waterproof performance when water is blocked cannot be obtained. Therefore, when the water pressure is high, for example, when washing a car, there arises a problem that water is flooded into the vehicle body 80, and it is a problem to solve this problem.

[0006]

The present invention is, as a concrete means for solving the above-mentioned conventional problems, a packing disposed between a vehicle body and a lamp body during assembly is temporarily held on the lamp body side. In the vehicular lamp including the above, a mounting bolt having a collar portion with a diameter appropriately larger than the diameter of the vehicle body mounting leg is embedded in the tip of the vehicle body mounting leg of the lamp body, and the packing is mounted on the vehicle body. An opening having a diameter substantially equal to the diameter of the mounting leg is provided, and the elasticity of the member having the packing is used to pass the opening through the flange to temporarily hold the packing. The problem is solved by providing a vehicle lamp characterized by the above.

[0007]

Next, the present invention will be described in detail based on an embodiment shown in the drawings. Reference numeral 1 in FIG. 1 is a vehicular lamp according to the present invention, and a flange is attached to a lamp body 2 which is a portion where the vehicle lamp 1 is attached to a vehicle body 10 (see FIG. 4). 21 is provided, and the packing 3 made of, for example, foam rubber is sandwiched between the flange 21 and the vehicle body 10 and compressed to waterproof the rear surface of the vehicle lamp 1. It is the same.

Also, the packing 3 is similar to the conventional example in that the packing 3 is temporarily held on the side of the lamp body 2 in preparation for assembling the vehicle lamp 1 to the vehicle body 10. According to the invention, when assembled to the vehicle body 10, the packing 3 is not compressed in a portion other than the flange 21.

FIG. 2 shows the above in detail, and in the present invention as well, the packing 3 is the same as the conventional example in order to secure both the relative position with respect to the vehicle lamp 1 and the relative position with respect to the vehicle body 10. The vehicle body mounting legs 22 provided on the lamp body 2 are used for temporary holding.

Here, in the present invention, the collar portion 41 is provided on the mounting bolt 4 which is mounted at the tip of the vehicle body mounting leg 22 by means of, for example, heat press-fitting, and the outer diameter φ1 of the collar portion 41 is the above-mentioned mounting. The diameter is appropriately larger than the outer diameter φ2 of the leg 22 depending on the elasticity of the packing 3.

Further, the packing 3 is provided with an opening 31 corresponding to the position where the vehicle body mounting leg 22 is provided, and the hole diameter φ3 of the opening 31 is the body mounting leg 22.
The outer diameter is φ2. Therefore, the opening 31
The hole diameter φ3 is smaller than the outer diameter φ1 of the collar portion 41.

The packing 3 is given a stress to expand the hole diameter φ3 of the opening 31 by utilizing the elasticity of the formed member, for example, foamed rubber, and the collar 4
1 is passed to reach the position of the vehicle body mounting leg 22, and after that, when the stress is removed, the hole diameter φ3 of the opening 31 returns to the original size.
The packing 3 is prevented from falling off, and the packing 3 is temporarily held.

Therefore, the outer diameter φ1 of the flange portion 41 is passed through the flange portion 41 when the packing 3 is assembled to the lamp body 2 in consideration of the hardness of the member on which the packing 3 is formed. Occasionally, too much stress is required to make the work difficult, and the opening 31 is easily formed by the stress applied to the packing 3 during the transportation after the packing 3 is assembled or when the packing 3 is assembled to the vehicle body 10. It suffices to set the outer diameter φ1 so that the outer diameter φ1 will not fall over the 41.

As shown in an enlarged view of the main part in FIG. 3, the collar portion 41 has a taper shape with a smaller outer diameter on the side where the packing 3 is inserted, and the above-mentioned packing portion 3 is attached to the collar portion 41. Assembling work is facilitated, and after the packing 3 is assembled, it is possible to make appropriate improvements in the implementation such that the packing 3 is less likely to drop off due to external stress.

Next, the operation and effect of the vehicle lamp 1 of the present invention having the above-described configuration will be described. According to the present invention, the packing 3 is temporarily held by passing through the collar portion 41. When the vehicle lamp 1 is assembled to the vehicle body 10, as shown in FIG. 22
The collar portion 41 of the mounting bolt 4 provided at the tip of the
Will come into contact with.

Therefore, when the bolts 42 of the mounting bolts 4 of the vehicle body mounting legs 22 and the nut 5 are assembled by the nuts 5, the mutual positions of the lamp body 2 and the vehicle body 10 are designed. It is a set regulation, and this does not cause an error between the plurality of vehicle lamps 1 and the vehicle body 10, for example, more than an error due to previously predicted component accuracy.

Therefore, the flange 21 provided integrally with the lamp body 2 in the same manner as the vehicle body mounting leg 22 also includes the vehicle body 10.
A certain position is maintained with respect to the vehicle body 10
If the flanges 21 are set so as to maintain a constant interval, all the flanges 21 on the production line maintain the same interval with respect to the vehicle body 10, that is, the dimension D for compressing the packing 3 is the same.

[0018]

As described above, according to the present invention, a mounting bolt having a brim portion having a diameter appropriately larger than the diameter of the vehicle body mounting leg is provided at the tip of the vehicle body mounting leg of the lamp body. The packing is provided with an opening whose diameter is substantially the same as the diameter of the body mounting leg, and the elasticity of the member on which the packing is formed is used to allow the opening to pass through the flange, thereby temporarily fixing the packing. By making it a vehicle lamp that is being held,
When mounting the vehicular lamp on the vehicle body, the mutual positions of the two should be kept constant, and the compression amount of the packing by the flange should be as designed so that the waterproof performance can be reliably exhibited and the occurrence of flooding. This is very effective for preventing and improving the quality of this type of vehicle lamp.

[Brief description of drawings]

FIG. 1 is a sectional view showing an essential part of an embodiment of a vehicular lamp according to the present invention.

FIG. 2 is an enlarged sectional view showing a portion A of FIG.

FIG. 3 is a cross-sectional view showing an enlarged part B of FIG.

FIG. 4 is an explanatory diagram showing a state in which a vehicle lamp is attached to a vehicle body.

FIG. 5 is a cross-sectional view showing a conventional example.

FIG. 6 is an explanatory view showing a state of being attached to a vehicle body of a conventional example.

[Explanation of symbols]

 1 …… Vehicle lamp 2 …… Lighting body 21 …… Flange 22 …… Vehicle mounting leg 3 …… Packing 31 …… Opening 4 …… Mounting bolt 41 …… Flange section 42 …… Bolt section 5 …… Nut D …… Dimension for compressing packing by flange φ1 …… Outer diameter of collar φ2 …… Outer diameter of body mounting leg φ3 …… Hole diameter of opening

Claims (1)

[Claims] 1. A vehicular lamp comprising a packing, which is arranged between a vehicle body and a lamp body when assembled, and is temporarily held on the lamp body side. The vehicle body mounting leg of the lamp body has a body mounting leg at a tip thereof. A mounting bolt having a collar portion with a diameter appropriately larger than the diameter of the body is embedded, and the packing is provided with an opening having a diameter substantially the same as the diameter of the vehicle body mounting leg. A vehicular lamp, wherein the packing is temporarily held by passing the brim portion by utilizing elasticity of a formed member.