JPH0122167Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a bulb socket device used in automobile lamps, etc. More specifically, the bulb is mounted horizontally on the socket body, and the bulb is connected to a flexible printed circuit board and an electric socket. The present invention relates to an improvement of a valve socket device which allows for direct connection.

<Prior art> In this type of valve socket device, for example,
As disclosed in Japanese Patent No. 56-156293, the contact portion of the flexible printed circuit board must be held vertically to be electrically connected to the valve, which reduces the reliability of the electrical connection between the valve and the flexible printed circuit board. When trying to improve
Problems such as an increase in the number of parts and a complicated structure result in poor assembly workability.

Moreover, in conventional bulb socket devices of this type, in order to facilitate the electrical connection structure with the bulb, the flexible printed circuit board was laid on the lamp wall with its conductive part (circuit part) side facing up. In order to prevent contact with other parts (shoot) and leakage, it was necessary to cover the parts other than the contact parts that make electrical contact with the bulb with an insulating film.

<Problems to be solved by the invention> The present invention was made in view of the conventional problems described above, and it is possible to solve the problem without covering the conductive part (circuit part) of the flexible printed circuit board with an insulating film or the like. It is an object of the present invention to provide a valve socket device which can reliably prevent contact with members and leakage of electricity, and can improve the reliability of electrical connection between a valve and a flexible printed circuit board.

<Means for solving the problem> The valve socket device of the present invention that achieves the above purpose has a valve insertion tube formed horizontally in the socket body, and the valve insertion tube is pressed on the side opposite to the valve insertion opening. A spring mounting part is formed in the same body and a grounding contact is attached thereto, while a flexible printed circuit board is laid on the upper surface of the light body wall with its conductive part side facing down, and the socket body is fixed to the flexible printed circuit board. A contact part in which a grounding conductive part is arranged and formed is extended so as to surround the positive conductive part, and the contact part is bent and bent to the side opposite to the valve insertion opening of the valve insertion tube. At the same time, locking pieces protruding from both left and right sides of the contact portion are engaged with fitting portions formed on the pressure spring attachment portion of the socket body, and the flexible printed circuit board is attached to the pressure spring attachment portion of the socket body. This valve is characterized by the attachment of a pressing spring to press the contact portion toward the valve insertion cylinder.

<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 a valve insertion opening 1a, a support 2 supporting the valve insertion tube 1, and the valve insertion opening 1a.
and a pressure spring mounting portion 3 formed on the opposite side, and each of these constituent members is molded into the same body from a synthetic resin material. The socket main body A engages with the socket mounting parts 5a and 5b formed protrudingly on the upper surface of the lamp wall B by means of the engaging parts 4a and 4b formed at the lower part of the pillar part 2 and the pressure spring mounting part 3, respectively. Fixed.

A J slot 6 is formed in the valve insertion tube 1 to serve as a valve insertion opening 1a, and a valve C is inserted sideways, and a contact installation hole 7 is formed in the upper part on the opposite side from the valve insertion opening 1a. Form an opening and insert and attach the ground contact D.

The grounding contact D is formed by bending a conductive elongated metal plate into a substantially U-shape, and is installed by inserting one horizontal part _D1 into the contact mounting hole 7 formed in the valve insertion tube 1. , the other horizontal part D ₂ is inserted into the valve insertion opening 1a so as to come into contact with the grounding terminal C ₁ of the bulb C, and the vertical part D ₃ is made to protrude to the side opposite to the valve insertion opening 1a, A conductive part for grounding is formed at the contact part E' of the flexible printed circuit board E on the vertical part _D3 .
Make sure to press E ₁ .

The flexible printed circuit board E has a contact part E' extending thereon, which is electrically connected to the bulb C. Lay it with the circuit part) side facing the top of the lamp wall B. Then, a grounding conductive part E1 is arranged and formed in the contact part E' so as to surround the periphery of _the positive conductive part _E2 . That is, when using the double filament valve C, one ground conductive part E 1 and two positive conductive parts E ₂ and E ₂ are wired to the contact part E _' of the flexible printed circuit board E, but Connect the conductive part E ₁ to the two positive conductive parts E ₂ , E ₂
Layout on the outside of the
The ground conductive portion E ₁ is arranged and formed so as to surround E ₂ and E ₂ . Also, contact part
E' is formed on almost the same axis (L ₁ = L ₂ ) as the pressing spring attachment part 3 of the socket body A, and locking parts 8, 8 are integrally formed on both left and right sides, and this contact part E ' from the bottom of the pressure spring mounting part 3 to the opposite side of the valve insertion opening 1a and raise it vertically to direct the ground and positive conductive parts E ₁ and E ₂ toward the valve insertion tube 1, and The locking parts 8, 8 are engaged with the fitting parts 9, 9 formed on the pressure spring mounting part 3 of the socket body A, and the grounding conductive part _E1 is connected to the vertical part of the grounding contact D using the pressing spring F. At the _same time, connect the two positive conductive parts E ₂ and E ₂ to the positive terminals C ₂ and C ₂ of the valve C.
so that they are pressed into contact with each other.

The pressing spring F is formed into a substantially U-shape using a single elastic metal plate, and has two parallel cuts 1 on one long upright wall portion F ₁ from its upper end to its base.
0 and two positive side pressing pieces 11a, 1
1a and one ground side pressing piece 11b is formed.

At this time, the earthing side pressing piece 11b is positioned between the two positive side pressing pieces 11a, 11a, and is formed to have a length sufficient to reach the earthing contact D attached to the socket body A. Attach the spring F to the pressure spring attachment part 3 of the socket body A and position it behind the contact part E' of the flexible printed circuit board E bent vertically.
The ground side pressing piece 11b elastically presses the grounding conductive part _E1 of the contact portion E' to the earthing contact D, and the two positive side pressing pieces 11a, 11a also hold the grounding conductive portion E1 of the contact portion E'. Connect the positive conductive part E ₂ , E ₂ to the positive terminal C ₂ of the valve C,
It is brought into elastic pressure contact with C ₂ . In addition, the other short rising wall _F2 has its upper end rearward approximately 90 degrees.
The support body 12 is formed by bending the socket body A, and mounting portions 13 are formed on both left and right sides to be engaged with the engagement grooves 3a formed in the pressing spring mounting portion 3 of the socket body A. At the upper end of the portion 13, there is a hooking portion 3'a formed in the engagement groove 3a of the pressing spring mounting portion 3.
A tongue piece 13a that is hooked to is formed in a protruding manner to prevent the extrusion spring F from falling off.

Next, to explain the assembly procedure with the above configuration, first attach the grounding contact D to the socket body A, attach this socket body A to the socket attachment parts 5a and 5b of the lamp wall B, and then attach the flexible printed circuit board. The contact portion E' of E is bent vertically from the bottom of the pressure spring mounting portion 3 of the socket body A so that its conductive portions E ₁ and E ₂ face toward the valve insertion tube 1, and the contact portion E' The locking tabs 8, 8 are engaged with the fitting portions 9, 9 of the socket body A. Then, attach the pressure spring F to the pressure spring attachment part 3 of the socket body A, press the contact part E' of the flexible printed circuit board E toward the valve insertion tube 1, and connect the grounding conductive part _E1 to the grounding contact D. Assembly is completed by pressing the parts together. When the bulb C is inserted into the bulb insertion opening 1a of the socket body A, the grounding terminal _C1 of the bulb C comes into contact with the grounding contact D, and the positive terminal _C2 contacts the flexible printed circuit board E. The valve C and the flexible printed circuit board E are electrically connected to each other by pressure contact with the positive conductive part E2 formed in the contact part E _' of the valve C.

<Effects of the invention> In this way, the bulb socket device of the present invention is constructed by laying a flexible printed circuit board on the upper surface of the lamp wall, with the surface facing the conductive part (circuit part) through which electricity flows, facing the upper surface of the lamp wall, and connecting the bulb and electricity. Since the electrical connection with the valve is made by bending only the contact part that comes into contact with the electrically conductive part, there is no need to coat the conductive part with a special insulating film to prevent contact with other parts or leakage. can be reliably prevented, and costs can be reduced accordingly.

In addition, the contact portion of the flexible printed circuit board has locking pieces protruding from both left and right sides of the contact portion that are engaged with fitting portions formed on the pressing spring attachment portion of the socket body, so that the contact portion is not affected by the elastic force. It is possible to securely position the positive and ground conductive parts of the contact part by suppressing the movement of the valve sliding up, thereby making the electrical contact between the valve and the flexible printed circuit board more reliable. It can be done.

Furthermore, since the conductive part for grounding is arranged and formed in the contact part of the flexible printed circuit board so as to surround the periphery of the positive conductive part, the contact part can be made stronger and more rigid than other parts. As a result, when the locking pieces protruding on both the left and right sides of the contact part are engaged with the fitting part of the socket body, the locking pieces can be firmly engaged and held without the risk of them accidentally coming off due to vibration, etc. This makes it possible to further improve the reliability of the electrical connection between the valve and the flexible printed circuit board.

Further, since the pressing spring is used only to elastically press the contact portion of the flexible printed circuit board from behind, the pressing spring can have a simple shape, and manufacturing and assembly can be facilitated.

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, and FIG. 3 is a perspective view showing a contact portion of a flexible printed circuit board. In the diagram, A is the socket body, B is the lamp wall, C is the bulb, _C1 is the ground terminal, _C2 is the positive terminal,
D is the grounding contact, E is the flexible printed circuit board, E' is the contact part, _E1 is the grounding conductive part, _E2 is the positive conductive part, F is the pressure spring, 1
is a valve insertion tube, 1a is a valve insertion opening, 3 is a pressure spring mounting part, 8 is a locking piece, 9 is a fitting part, 11a is a press piece for the positive side, 11b is a press piece for the earth side,
It is.

Claims (1)

[Scope of utility model registration request] A bulb insertion tube is formed horizontally on the socket body, a pressing spring attachment portion is formed in the same body on the side opposite to the bulb insertion opening of the bulb insertion tube, and a grounding contact is attached, while the other side is attached to the upper surface of the lamp body wall. A flexible printed circuit board is laid with its conductive part side facing down, and the socket main body is fixed thereto, and a conductive part for grounding is arranged and formed on the flexible printed circuit board so as to surround the periphery of the positive conductive part. A contact portion is extended, the contact portion is bent and bent to face the side opposite to the valve insertion opening of the valve insertion tube, and locking pieces protruding from both left and right sides of the contact portion are attached to the socket. A pressing spring is attached to the pressing spring mounting portion to engage with a fitting portion formed in the pressing spring mounting portion of the main body, and to press the contact portion of the flexible printed circuit board toward the valve insertion cylinder. Characteristic valve socket device.