JPH0220786Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a bulb socket device used in an automobile lamp. Attach the valve to the valve insertion opening, bend the contact part of the flexible printed circuit board on the opposite side of the valve insertion opening, and press the conductive part formed on the contact part to the terminal of the valve with a pressure spring. This invention relates to an improvement of a valve socket device.

<Prior art> In conventional valve socket devices of this type, in order to press the conductive portion formed on the contact portion of the flexible printed circuit board to the terminal of the valve, the contact portion of the flexible printed circuit board must be bent and bent by hand each time during assembly. In this state, a pressing spring had to be installed behind the contact portion, which caused a problem that required assembly work.

Moreover, since the flexible printed circuit board has considerable elasticity, when the contact section is bent and raised, the contact section tends to lift up due to the elastic force of the bent section of the contact section, resulting in conductivity of the flexible printed circuit board during use. There were cases where the parts were misaligned, causing poor contact with the valve terminals. However, when attempting to improve the reliability of the electrical contact between the flexible printed circuit board and the valve, problems such as an increase in the number of parts, a complicated structure, and even worse assembly workability are likely to occur.

<Problem to be solved by the invention> The present invention was made in view of such conventional problems, and when the socket body is assembled to the socket mounting part of the lamp wall, the flexible printed circuit board is automatically installed at the same time. The contact part is bent and bent, and an appropriate distance is maintained between the bent contact part and the pressure spring mounting part, which greatly improves the ease of assembly work such as assembly of the pressure spring. It is an object of the present invention to provide a valve socket device which is capable of improving the reliability of electrical connection between a terminal of a valve and a conductive part of a flexible printed circuit board.

<Means for Solving the Problems> The bulb socket device of the present invention achieves the above object by forming a bulb insertion tube horizontally in the socket body, installing the socket body in the socket mounting part on the upper surface of the lamp wall, Attach the valve to the valve insertion opening of the valve insertion tube, bend the contact part of the flexible printed circuit board on the opposite side of the valve insertion opening, and connect the conductive part formed in the contact part to the terminal of the valve. In the valve socket device, a support portion is integrally formed at the lower part of the valve insertion cylinder of the socket main body, and a pressure spring mounting portion is formed as an extension at the rear of the support portion, and The lamp is characterized in that a protrusion is formed on the socket mounting portion of the lamp wall in a horizontal frame shape to cooperate with the support portion of the socket body to bend and raise the contact portion of the flexible printed circuit board. be.

<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.

The socket main body A includes a cylindrical valve insertion tube 1 having a sideways opening for the valve insertion opening 1a, a strut portion 2 that supports it, and a side of the valve insertion tube 1 opposite to the valve insertion opening 1a. and a pressure spring attachment part 3 formed rearward of the support column 2, and each of these constituent members is molded into one body from a synthetic resin material. Then, in the valve insertion tube 1, J
A conductive support cylinder C having a slot 4 formed therein is fitted to form a valve insertion opening 1a, and a valve B is installed horizontally into the valve insertion opening 1a, and at the same time,
A grounding contact D formed in the shape of an elongated flat plate is inserted and installed between the valve insertion tube 1 corresponding to the inner bottom of the valve insertion opening 1a and the support tube C, and one end side D' of the grounding contact D is installed. is bent into a substantially square shape and led out to the side opposite to the valve insertion opening 1a. In addition, without using the support tube C, the valve insertion port 1
It is also possible to form a J-slot directly in a and bring the grounding terminal 5a of the bulb B into direct contact with the grounding contact D.

Further, the support portion 2 is formed into a substantially U-shape in plan with the support walls 2a, 2a on both sides and the rear support wall 2b. A protrusion 8 is provided to protrude and engage with the engagement hole 7 of the formed socket mounting portion 6, and
At the rear of both side support walls 2a, 2a (on the side opposite to the valve insertion opening 1a of the valve insertion tube 1), a pressure spring mounting portion 3 is installed so as to be located further back than the rear support wall 2b. Form an integral extension. Then, one ground conductive part 9a and two positive conductive parts 9b, 9b formed in the contact part F' of the flexible printed circuit board F are connected to the pressing spring mounting part 3 to the ground terminal 5a and the positive terminal of the valve B, respectively. 5b
Attach a pressure spring G to press the

The socket mounting portion 6 of the lamp wall E to which the socket body A is attached is constructed by facing each other with rising walls 6a that are substantially U-shaped in plan, and the contact portion of the flexible printed circuit board F is placed between the two rising walls 6a, 6a.
At the same time, when the socket body A is installed in the socket mounting part 6, the contact part F' of the flexible printed circuit board F cooperates with the rear support wall 2b of the support part 2 formed on the socket body A. A protrusion 10 is formed in a horizontally extending manner to bend and raise the material almost vertically. At this time, as in the illustrated embodiment, one side surface 10a of the protrusion 10, that is, the surface 10a on the side facing the rear support portion 2b of the socket main body A, is inclined slightly rearward, and the rear support wall of the socket main body A is tilted slightly backward. By forming the lower end surface 2'b of 2b to have a substantially arc-shaped cross section, the contact portion F' of the flexible printed circuit board F, especially the bent portion of the contact portion F'
F'' can be bent more easily without damaging it.

Contact part of flexible printed circuit board F
One ground conductive part 9a and two positive conductive parts 9b, 9b are formed in F', and the socket body A
Bending vertically from the bottom surface of the conductive parts 9a and 9b to the side opposite to the valve insertion opening 1a, press springs G
Ground and positive terminal 5 of Butte Valve B
a and 5b, respectively. That is, in the contact portion F' of the flexible printed circuit board F, two positive conductive parts 9b, 9b are arranged in parallel on the left and right, and one ground conductive part is formed between these two positive conductive parts 9b, 9b. The contact portion F' is formed so as to be located slightly below the positive conductive portions 9b and 9b, and this contact portion F' is projected onto the rear support wall 2b of the socket body A and the socket mounting portion 6 of the lamp wall E. The protrusion 10 provided is bent and raised almost vertically from the bottom surface of the socket body A.
Press the spring G attached to the spring mounting part 3 of the socket body A elastically from behind to connect the grounding conductive part 9a to the grounding contact D.
At the same time, the two positive conductive parts 9b and 9b are brought into pressure contact with the two positive terminals 5b and 5b of the bulb B, respectively.

The pressing spring G is formed by using a single elastic metal plate and curved into a substantially U-shape, with one rising wall portion serving as a pressing portion Ga that presses the contact portion F′ of the flexible printed circuit board F, and the other portion serving as a pressing portion Ga for pressing the contact portion F′ of the flexible printed circuit board F. The rising wall portion is defined as a support portion Gb that is engaged with the pressing spring attachment portion 3 of the socket body A. Cuts 11a, 11b, 11c are formed in the pressing part Ga from its upper end, and two positive conductive parts 9b, 9 formed in the contact part F' of the flexible printed circuit board F are formed.
In correspondence with b, two positive side pressing pieces 12,
12 are formed in parallel so that they can be pressed independently of each other, and these two positive side pressing pieces 1
One ground side pressing piece 13 is formed to be located between 2 and 12 and correspond to the ground conductive part 9a of the contact portion F'. Then, bend the ground side pressing piece 13 forward,
Ground conductive part 9 of flexible printed circuit board F
A is brought into elastic pressure contact with one end side D' of the grounding contact D.

Further, the upper end of the other rising wall Gb is bent approximately 90 degrees rearward to form an engaging portion 14,
A mounting portion 15 is formed to be inserted into and engaged with an engagement groove 3a formed in the pressing spring mounting portion 3 of the socket body A. In the case of the illustrated embodiment, the positive side pressing piece 12 is composed of a spring portion 12a and a pressing portion 12b, and the pressing portion 12b is configured to increase the pressing area.
The width of the pressing part 12b is wider than that of the spring part 12a, and a small guide protrusion 12c is formed extending from the lower end of the pressing part 12b which projects from the spring part 12a. This guide protrusion 12c is attached to the spring portion 1 when attaching the pressure spring G to the pressure spring attachment portion 3 of the socket body A.
This is to prevent the contact portion F' of the flexible printed circuit board F from being damaged by the lower end of the pressing portion 12b protruding from the slit 11b as shown by two-dot chain lines m and m in FIG. , 11c
If the width of the slit 11a is increased by extending straight, and the width of the pressing portion 12b is formed to be approximately the same as that of the spring portion 12a, this is an unnecessary member.

Next, the assembly procedure with the above configuration will be explained. First, the grounding contact D is installed in the valve insertion tube 1 of the socket body A, and the support tube C is fitted.
Attach the valve B to the valve insertion opening 1a. On the other hand,
The contact part F' of the flexible printed circuit board F is arranged in the socket mounting part 6 of the light body wall E,
The socket body A is attached to the socket attachment part 6 from above. Then, the contact part F' of the flexible printed circuit board F is located opposite to the valve insertion opening 1a due to the action of the support part 2 (rear support wall 2b) of the socket body A and the protrusion 10 of the socket mounting part 6. The contact part F' is bent almost vertically from the bent part F'' to the side, and an appropriate distance l is created between the bent contact part F' and the pressing spring mounting part 3 of the socket body A (see Fig. 1). Thereafter, when the pressure spring G is inserted from above into the pressure spring mounting portion 3 of the socket body A, the flexible printed circuit board F is held.
Grounding conductive part 9 formed on the contact part F' of
a is pressed against one end side D' of the grounding contact by the elastic pressing force of the grounding side pressing piece 13 of the pressing spring G, and the two positive conductive parts 9b,
Even if 9b is the elastic pressing force of the positive side pressing piece 12 of the pressing spring G, the positive terminal 5 of each valve B
b and 5b, and the handle assembly is completed.

<Effects of the invention> Since the valve socket device of the present invention is constructed in this way, when the socket body is attached to the socket mounting part of the lamp wall, the contact part of the flexible printed circuit board is simultaneously and automatically bent and bent. An appropriate distance is maintained between the pressed contact portion and the pressing spring mounting portion of the socket body. Therefore, it is no longer necessary to bend and hold the contact part of the flexible printed circuit board by hand when inserting the pressure spring as in the past, and in addition, the bent contact part and the pressure spring mounting part of the socket body can be easily bent and held. Since an appropriate distance is maintained between the two, the pressure spring can be easily inserted and installed, and the ease of assembly can be greatly improved.

Moreover, since the bent part F'' of the contact part of the flexible printed circuit board is held down by the support part (rear support wall) of the socket body, even if it receives external vibrations, the contact part will float up and connect to the valve. There is no risk of electrical contact failure at all, and therefore the reliability of the electrical connection between the terminals of the bulb and the conductive portion of the flexible printed circuit board can be improved.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a sectional view, FIG. 2 is an exploded perspective view, FIG. 3 is a front view of a pressure spring, and FIG. 4 is a sectional view taken along line 4-4. In the figure, A is the socket body, B is the double filament bulb, E is the lamp wall, F is the flexible printed circuit board, F' is the contact part, G is the pressure spring, 1
is the valve insertion tube, 1a is the valve insertion port, 2 is the support section, 3 is the pressure spring attachment section, 5a is the ground terminal,
5b is the positive terminal, 6 is the socket mounting part, 9a
is the conductive part for ground, 9b is the conductive part for positive, 10
is a ridge.

Claims (1)

[Scope of utility model registration request] A bulb insertion tube is formed horizontally on the socket body, the socket body is installed in the socket attachment part on the upper surface of the lamp wall, and the bulb is attached to the bulb insertion opening of the bulb insertion tube, and the bulb insertion opening and In a valve socket device in which a contact portion of a flexible printed circuit board is bent on the opposite side and a conductive portion formed on the contact portion is pressed into contact with a terminal of the valve by a pressing spring, the valve insertion tube of the socket body is A support section is integrally formed at the lower part of the support section, and a pressure spring attachment section is formed as an extension at the rear of the support section, and the socket attachment section of the lamp body wall cooperates with the support section of the socket main body to attach the support spring. A valve socket device characterized in that a protrusion for bending and raising a contact portion of a flexible printed circuit board is formed to protrude horizontally.