JPS6228060Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a socket cover that is attached to waterproof a socket portion of a vehicle lamp.

The back side of a vehicle lamp has a socket structure into which a light bulb is inserted, and a socket cover is attached to prevent rainwater from entering through the socket structure. The socket cover is made of rubber, has a cylindrical part in the center, and is attached by inserting the cylindrical part into the base of the light bulb.

However, this installation requires elastic engagement with the inside diameter of the cylindrical part, which is smaller than the outside diameter of the bulb cap, and the installation position is held by the frictional engagement of the rubber itself, making it suitable for automobiles, etc. When strong vibrations are transmitted from the outside, the frictional engagement gradually loosens, the socket cover slips out, and the contact with the reflector becomes loose, making it impossible to waterproof.

The present invention has been made to eliminate these drawbacks, and its purpose is to provide a socket cover mounting structure that prevents the socket cover from slipping out even in the event of strong external vibrations.

The present invention was developed to achieve this purpose.
A cylindrical part that is inserted into the base of a light bulb that is inserted into a socket provided on the back side of the reflector of a vehicle lamp; In the mounting structure of the rubber socket cover that comes into contact with the back surface of the reflector, a groove portion along the circumferential surface is formed on the circumferential surface of the base of the light bulb and at a position behind the cylindrical portion when the socket cover is fitted. and a disc-shaped holder having a hole in the center with a plurality of tongue-like protrusions formed on the inner periphery that elastically engage with the groove, and the holder is inserted into the socket so as to sandwich the socket cover. This socket cover mounting structure is characterized in that it is fixed to the groove of the base of the light bulb, and the tongue-like protrusion and the groove can be attached by simply pressing and inserting the holder after attaching the socket cover to the base of the light bulb. engages, thereby preventing the holder from slipping out, and even when subjected to strong external vibrations, the mounting position of the socket cover does not change from the initial mounting position, ensuring stable mounting and complete waterproofing.

Next, the present invention will be explained in more detail with reference to the illustrated embodiment. Reference numeral 1 denotes a vehicle lamp, in which a lens 3 is attached to the front side of a reflector 2, and a socket 2a is provided on the back side of the reflector 2. A light bulb 5 with a flange 4 is inserted into the socket 2a, and a base 6 of the light bulb 5 projects rearward. A plurality of contact terminals 7 are provided protruding from the rear end of the base of this light bulb, and a groove 8 is provided along the circumferential direction on the circumferential surface of the base and near the rear end.

Reference numeral 9 denotes a rubber socket cover, which is cup-shaped as a whole, with a cylindrical portion 10 formed in the center thereof, and a drain hole 11 provided in one side (downward in the installed state).

Reference numeral 12 denotes a disc-shaped holder made of metal or resin, and the holder has a hole 13 in the center for fitting into the base 6 of the light bulb, and a groove 8 provided in the base on the periphery of the hole. A plurality of protruding tongues 14 are provided for engagement.
In the case of the illustrated embodiment, four tongue-like protrusions are formed, which are bent rearward with respect to the insertion direction, with their tips facing outward, and are larger than the diameter of the hole 13 as a whole. The elasticity of the tongue-like protrusion 14 allows the groove 8 to be positioned slightly inward.
The engagement is stable.

To attach the holder 12, first fit the cylindrical portion 10 of the socket cover 9 onto the base 6 of the light bulb, and then place the holder 12 into contact with the rear of the cylindrical portion 10. When the holder 12 is positioned so as to press the rear of the cylindrical portion 10, the tongue-like protrusion 14 aligns with the groove 8.
The socket cover 8 is fitted and engaged so that it does not come out easily, and the tip 8a of the socket cover 8 is brought into close contact with the back surface of the reflecting mirror 2. When removing the holder 12, by pulling the holder forcefully backward, the tongue-like protrusion 14 will ride over the edge of the groove 8 and the engagement will be released, allowing the holder to be pulled out backwards.

By attaching the holder 12 in this manner, the socket cover 9 is set in the same position as the initial attachment position, and is subject to the action of being pushed back by the tip 9a that is in contact with the reflector 2 together with vibrations from the outside, especially in the case of a car. However, the holder 12 does not come out due to the engagement between the groove portion 8 and the tongue-like projection.

As explained above, the mounting structure of the socket cover according to the present invention is such that a groove is formed along the circumferential direction on the outer peripheral surface of the base of the light bulb near the rear end, and the socket cover is fitted into the groove and engaged elastically. A disc-shaped holder with multiple tongue-like protrusions on the inner circumferential surface is fitted onto the base of the light bulb after the socket cover is attached, so the holder can reduce vibrations received from the outside, especially in automobiles. The socket cover is held in a stable state so that it does not slip out, and the initial mounting position of the socket cover does not change at all, so there is no loosening and it is completely waterproof, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of a vehicle lamp to which a socket cover mounting structure according to the present invention is applied, and FIG. 2 is a rear view showing only the main parts of the same mounting structure. 1... Vehicle lamp, 2... Reflector, 2a... Socket, 3... Lens, 4... Flange, 5...
Light bulb, 6...Light bulb base, 7...Contact terminal, 8
...Groove portion, 9...Socket cover, 9a...Tip, 10...Cylindrical portion, 11...Drain hole, 12...
Disc-shaped holder, 13... hole, 14... tongue-like projection.

Claims (1)

[Scope of Claim for Utility Model Registration] A cylindrical part that is inserted into the base of a light bulb that is inserted into a socket provided on the back side of the reflector of a vehicle lamp, and a cup that extends from the rear end of this cylindrical part to the circumferential surface. In the mounting structure of a rubber socket cover, which is formed in an extended shape and whose tip abuts the back surface of the reflector, a position on the circumferential surface of the base of the light bulb and behind the cylindrical part when the socket cover is fitted. The socket cover is provided with a groove along the circumferential surface thereof, and a disc-shaped holder having a hole in the center having a plurality of tongue-like protrusions formed on the inner periphery that elastically engage with the groove. A mounting structure for a socket cover, characterized in that the holder is fixed to the groove portion of the base portion so as to sandwich the holder.