JPH0136311Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a socket device for a vehicle lamp. More specifically, the present invention relates to a socket device with improved waterproofness inside the socket.

<Prior Art> Generally speaking, socket devices for lamps mounted on the outside of the vehicle body, such as front combination lamps, rear combination lamps, or side marker lamps, are used for vehicle lamps. Waterproofness is required.
In other words, if water enters the socket device,
Not only can the bulb break due to the shot, but also the bulb may not light up due to rust on the socket or bulb cap.Water that has entered the lamp chamber becomes water vapor when the bulb is turned on, and adheres to the inner surface of the lens as water droplets, impairing light distribution performance. This is because it may cause problems such as extremely lowering the temperature.

Therefore, as a conventional socket device, for example, a device shown in Japanese Utility Model Application Laid-Open No. 56-41903 has been proposed.
This involves fitting the socket into the socket holder section of the housing, clamping the core wire of the ground cord, and applying a sealant near the outlet of the socket holder section through which the ground cord and positive cord are passed. A seal is formed between each cord and the socket holder section.

<Problems to be solved by the invention> By the way, by applying the sealant as mentioned above,
With a structure that seals between each cord and the socket holder part, it takes a considerable amount of time to apply the sealant and then harden it, resulting in poor work efficiency. In this case, a gap is created between the sealant and the cord, and there are problems such as water infiltrating into the socket holder portion through this gap. Furthermore, by fitting the core wire of the ground cord into the socket holder together with the socket, the core wire may break.
There were also problems such as the bulb not lighting up.

<Means for Solving the Problems> Therefore, in order to solve the above-mentioned problems, this invention includes a socket holder, a substantially cylindrical socket fitted into the socket holder, and a valve. The socket includes at least one positive cord that contacts the contact portion, an earth cord that connects to the outer surface of the socket with a terminal, and a grommet provided with an insertion opening through which the earth cord and the positive cord pass. The socket device for a vehicle lamp is characterized in that the grommet has a stepped portion formed between the bottom of the socket and the insertion opening for the earth cord so that the earth cord can be bent.

<Function> According to the above configuration, since the positive cord and the ground cord are inserted through the insertion opening of the grommet, the waterproofing inside the socket is further improved, and the ground cord can be bent at the stepped portion of the grommet. The bottom surface of the socket and the grommet can securely hold the ground cord, and the ground cord will not come off from the socket device.

<Description of Embodiment> Next, one embodiment of this invention will be described with reference to FIGS. 1 to 3. The socket holder 3 has upper and lower flanges 3 that clamp the periphery of the opening of the housing 2.
5, 36, and a front opening 31 into which the socket 4 is press-fitted.
A rear opening 38 and a side recess 33 are formed through the step 32. The socket 4 press-fitted into the socket holder 3 has a substantially cylindrical shape, and is formed with a slot 41 for locking a pin 11 protruding from the base of the valve 1. Further, inside the socket holder 3, there is an insulator 5 that holds the terminal 91 of the positive cord 9a, and a coil spring 6 that biases the insulator 5 toward the valve 1 side.
Then, as shown in FIG. 2, the grommet 7 made of an elastic material such as rubber and the terminal 10 of the earth cord 9b disposed in the side recess 33 are assembled. This terminal 10 is formed with a tongue piece 101 that comes into elastic contact with the outer surface of the socket 4.

As shown in FIG. 3, the grommet 7 has a hole 73 into which the positive cord 9a is inserted (the hole 731 in the figure is configured when the valve 1 is a double filament), and a stepped portion 71. , a bulging portion 72 that is fitted into the side recess 33 , a hole 74 a formed in the bulging portion 72 into which the earth cord 9 b is inserted, a protruding ring 7 a that comes into elastic contact with the inner wall of the socket holder 3 ; Projecting rings 73a and 74a are formed inside the holes 73 and 74 and come into elastic contact with the positive cord 9a and the negative cord 9b.

Since the grommet 7 is constructed as described above, the grommet 7 into which the positive cord 9a and the earth cord 9b have been previously inserted is fitted into the socket holder 3, and then the socket 4 is fitted into the socket holder 3.
At this time, the grommet 7 comes into contact with the stepped portion 32 of the socket holder 3 due to the press-fitting of the socket 4, and the ground cord 9b located at the bulging portion 72 of the grommet 7 is pushed by the bottom surface of the socket 4 and is pushed into the bent portion. 91b
and the terminal 10 arranged in the side recess 33
A tongue piece 101 is connected to the outer surface of the socket 4 in elastic contact. In this way, the positive cord 9a and the earth cord 9b are assembled to the socket holder 3 by the grommet 7 so as to prevent water from entering the socket holder 3.

<Effects of the invention> As detailed above, the socket device for a vehicle lamp according to this invention not only holds a grommet between the socket holder and the socket, but also allows the positive cord and the ground cord to be inserted into the grommet in a watertight manner. In addition, the ground cord is press-fitted into the socket and bent at the stepped part, and the terminal is connected to the outer surface of the socket, ensuring a reliable ground connection, and the grommet improves waterproofness inside the socket device. Moreover, it is easy to assemble the socket device, contributing to the efficiency of the assembling work.

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention,
FIG. 1 is a side sectional view, FIG. 2 is an exploded perspective view, and FIG. 3 is a side sectional view of the grommet. 3...Socket holder, 4...Socket, 7
...Grommet, 71...Step, 9a...Plus cord, 9b...Earth cord.

Claims (1)

[Scope of utility model registration request] A socket holder, a substantially cylindrical socket fitted into the socket holder, at least one positive cord that contacts a contact portion of a valve, and a ground cord connected to an outer surface of the socket with a terminal. and a grommet having an insertion opening through which the earth cord and the positive cord pass, and the grommet has a grommet so that the earth cord can be bent between the bottom of the socket and the insertion opening for the earth cord. A socket device for a vehicle lamp, characterized in that a stepped portion is formed at the bottom.