JPH0371744B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lamp socket, and more particularly to a lamp socket made of elastic material that is exposed to an external atmosphere and used in a vibrating atmosphere.

[Conventional technology]

Conventional lamp sockets of this type have a socket body made of an insulating elastic material and a pair of metal terminal pieces contained within the socket body, and by inserting a wedge base lamp into the socket body, the thin lead wires of the wedge base lamp can be connected. is configured to be electrically connected to, for example, a conductive circuit pattern on a printed circuit board via the terminal piece.

[Problem that the invention seeks to solve]

In the above-mentioned conventional technology, since the metal terminal piece is enclosed in the elastic lamp socket,
There is a problem in that it takes time and effort to assemble the terminal piece in the lamp socket, and the contact condition between the thin lead wire of the wedge base lamp and the terminal is likely to be damaged due to the terminal falling down or being misaligned, especially in a vibrating atmosphere. When used in the field, the above-mentioned problems are likely to occur due to the vibration.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a lamp socket that does not require the work of assembling terminals and has a good electrical connection.

[Means for solving problems]

The present invention provides a socket body made of an insulating elastic material, and has an electrical connection between the inside and the outside made of a conductive elastic material that forms part of the peripheral wall of the socket body. At least one pair of terminal portions are formed integrally with the socket body.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 3 show a first embodiment of the present invention. For example, a speedometer, an engine tachometer, a fuel gauge (not shown),
It incorporates instruments such as a thermometer that indicate the driving status of the vehicle, as well as a central warning device that centrally displays various vehicle conditions.

A flexible printed wiring board 2 for instrument wiring is attached to the back side of the instrument housing 1 along the instrument housing 1 by engaging holes 3 and pins 3a, and this wiring board 2 is equipped with instrument lighting or display. A conductive part 5 is formed to electrically connect to the side of a wedge-based lamp socket 4 made of an elastic material such as rubber used for lighting, and a conductive circuit pattern 6 is formed by being routed from this conductive part 5. The pattern 6 is connected to an electric cable routed from a battery (not shown) via a coupler or the like.

Further, a mounting hole 7 for mounting and fixing the lamp socket 4 is formed in the housing 1 at a suitable location, and the mounting hole 7 has two pairs of conductive parts having mutually different lengths formed by being routed by the conductive circuit pattern 6. 5
The tongue pieces 8, 8a are formed to protrude.

The wedge base lamp 9 attached to the lamp socket 4 has a filament 1 inside the spherical part 10.
1 and a pair of lead thin wires 1 to connect them.
A part of 2 is led out to the outside. Further, the lower end of the wedge base lamp 9 is formed as a sealing part 14 that flatly seals the lower part of the spherical part 10 together with the exhaust pipe 13, and the pair of thin lead wires 12 led out to the outside seals the flat sealing part 14. part 14
It is bent upward along.

On the other hand, the lamp socket 4 has a socket body 15 having a circular planar shape formed of an insulating elastic material such as rubber.
5 is the sealing portion 1 of the wedge base lamp 9.
4 and a hollow part 1 into which a part of the spherical part 10 is inserted.
6 is formed, and flanges 17 and 18 are formed on the upper and lower portions of the outer circumferential surface of the socket body 15 to make close contact with the housing 1 side. In addition, a pair of terminal parts 19 and 20 which are electrically connected to the thin lead wire 12 led out from the wedge base lamp 9 are formed in the hollow part 16 in the socket body 15 using an elastic material having conductivity such as carbon-containing rubber. Therefore, it is formed integrally with the socket body 15 so as to constitute a part of the side peripheral wall of the socket body 15. The pair of terminal parts 19, 20
are the facing side walls 16a and 16b of the cavity 16.
Connection portions 19a and 20a are integrally formed to electrically connect to the thin lead wire 12, and are electrically connected to one tongue piece 8 of the conductive circuit pattern 6 on the upper outer surface of the side peripheral wall of the socket body 15. An annular connection part 19b is formed protrudingly, and an annular connection part 20b is electrically connected to the other tongue piece 8a at the lower part of the outer surface.
is formed protrudingly, and one of the cavity 16 side connecting portions 19a and the outer surface side connecting portion 19b form a continuous portion 19c.
The connecting portion 20a on the other side of the cavity 16 and the connecting portion 20b on the outer surface side are continuously formed by the continuous portion 20c, and each constitute a part of the socket body 15. Then, insert the wedge base lamp 9 into the lamp socket 4, and connect the pair of thin lead wires 12, 12 of the lamp 9 to the terminal portion 1.
9 and 20, the lamp socket 4 is inserted along the mounting hole 7 formed in the housing 1, and at the same time, the conductive tongue pieces 8 and 8a disposed above the mounting hole 7 are inserted. is mounting hole 7
The terminal portion 1 is bent along the inner surface, and then the terminal portion 1 is bent.
One of the connecting portions 19b of 9 and 20 is pressed into contact with one of the tongue pieces 8, and the other connecting portion 20b is pressed into contact with the other tongue piece 8a. As a result, the lamp socket 4 can be assembled into the housing 1, and at the same time, the lead wires 12, 12 of the lamp 9 and the conductive tongues 8, 8a of the conductive circuit pattern 6 are maintained electrically conductive by the terminal parts 19, 20. be able to.

In the above embodiment, the socket body 15 is made of an insulating elastic material, and the socket body 15 is made of an insulating elastic material.
Since the terminal parts 19 and 20 formed of a conductive elastic material are integrally formed so as to form a part of the peripheral wall of the lamp socket 4, a pair of terminal pieces can be placed in the hollow part 16 of the lamp socket 4 as in the conventional case. In addition to eliminating the trouble of inserting and arranging the terminals, the terminals 19 and 20 do not fall down or shift in position, so the electrical connection between the terminals 19 and 20 and the thin lead wire 12 of the lamp 9 is good, and short circuits between the terminals are prevented. The must pay is also removed. Furthermore, since the sealed portion 14 of the lamp 9 and the thin lead wire 12 contact the connecting portions 19a, 20a of the elastic terminal portions 19, 20, the terminal portions 19, 2
Due to the damping effect due to the elasticity of 0, the vibration resistance is better than that using conventional metal terminal pieces. In addition, the flange 1 of the lamp socket 4 has flexibility.
7 and 18 are in close contact with the surface of the flexible printed wiring board 2 and the flat surface of the housing 1, and the flanges 17 and 18 that are in close contact can seal the outside of the housing 1 and the inside of the housing 1,
This prevents rainwater or dust from entering the housing 1 from outside, and prevents the terminal portions 19 and 2 from entering.
0 connection parts 19b, 20b and the conductive tongue pieces 8, 8a of the flexible printed wiring board 2 can be maintained in a good electrical conduction state. In this case, the terminal portion 19,
20 connection parts 19b, 20b are lamp sockets 4
Since the annular projection is formed on the outer surface of the lamp, the lamp socket 4 can be installed in any direction, and the lamp socket 4 can be inserted by pushing it into the mounting hole 7 in an appropriate direction. Also, even in a vibrating atmosphere,
By forming the lamp socket 4 itself and the terminal parts 19 and 20, which are attached to the housing 1, from a flexible material, vibrations applied to the lamp socket 4 and the lamp 9 can be absorbed. Filament 1 formed in
The disconnection accident described in No. 1 can be prevented. In addition, the terminal portion 1 is located within the cavity portion 16 of the lamp socket 4.
Since the lamp sockets 9 and 20 are integrally formed, there is no need to form grooves or recesses to prevent the terminal pieces from falling down, as in the conventional case, and the structure of the lamp socket 4 is simplified.

4 to 14 show other embodiments of the present invention, which will be described below using the same reference numerals for the same parts as in the above embodiment and omitting the explanation of the same parts.

4 and 5 show a second embodiment, in which a socket body 15a having a rectangular planar shape is formed of an insulating elastic material, and the lower part of this socket body 15a is in close contact with the housing 1 side. A flange 18 is formed. In addition, a pair of terminal portions 21 and 22 that are electrically connected to the thin lead wire 12 led out from the wedge base lamp 9 in the hollow portion 16 of the socket body 15a are made of a conductive elastic material. It is formed integrally with the socket main body 15a so as to constitute a part of a pair of opposing side walls 23, 24. The pair of terminal parts 21 and 22 are connecting parts 21a and 22a that are electrically connected to the thin lead wire 12 on the opposing side walls 16a and 16b of the hollow part 16.
are integrally formed, and connecting portions 21b and 22b that are electrically connected to the conductive tongue pieces 8 and 8 are formed protruding from the outer surfaces of the side walls 23 and 24 of the socket main body 15a, and a connecting portion on one side of the hollow portion 16. 21a and the outer surface side connecting portion 21b are continuously formed by the continuous portion 21c, and the other hollow portion 16 side connecting portion 22
a and the outer connecting portion 22b are continuously formed by the continuous portion 22c, and each constitute a part of the socket body 15a. Then, insert the wedge base lamp 9 into the lamp socket 4a, and connect the pair of thin lead wires 12, 12 of the lamp 9 to the terminal parts 21, 22.
After contacting and holding the lamp socket 4a in contact with the connecting parts 21a and 22a of the terminals 21 and 22, the lamp socket 4a is aligned with the mounting hole 7 formed in the housing 1, and the connecting parts 21 of the terminals 21 and 22 are held in contact with each other.
At the same time that b, 22b and the pair of tongue pieces 8, 8 are inserted in the corresponding direction, the conductive tongue pieces 8, 8 disposed on the mounting hole 7 are bent along the inner surface of the attachment hole 7, and then The terminal portions 21 and 22 are pressed into contact with the pair of tongue pieces 8 and 8, respectively, whereby the thin lead wires 12 and 12 of the lamp 9 and the conductive tongue pieces 8 and 8 of the conductive circuit pattern 6 are connected to the terminal portions 21 and 22. Therefore, electrical continuity can be maintained, and the same operation and effect as in the above embodiment can be obtained.

6 and 7 show a third embodiment, which basically has the same structure as the second embodiment, with four side walls 23, 24, 25,
26 has connection parts 21b and 21 of the terminal parts 21 and 22.
b, 22b, 22b are respectively formed protrudingly, and 2
It is configured to be electrically connected to a pair of conductive tongue pieces 8, 8, 8a, 8a.

FIG. 8 shows a fourth embodiment, which has basically the same configuration as the second embodiment, and has terminal parts 21 and 2.
The hollow connecting portions 21a, 22a and the outer connecting portions 21b, 22b of the socket body 15a are continuously formed and exposed to the upper end surface of the socket body 15a.
1, 22 connection parts 21a, 22a, 21b, 2
Since the length 2b is approximately the same as the length of the socket body 15a, the electrical connection between the conductive tongues 8, 8 and the thin lead wires 12, 12 of the lamp 9 is good. Further, this structure can be applied to a structure having four connecting portions 21b, 21b, 22b, and 22b as in the third embodiment.

9 and 10 show the fifth embodiment, and the second embodiment
It basically has the same structure as the embodiment, in which the connecting parts 21b and 22b on the outer surface side of the terminals 21 and 22 are continuously formed up to the upper surface of the lower flange 18, and the side walls 23 and 24 and the flange 18 are connected to each other. Connection part 21
b, 22b have linear protrusions 27, 27a, respectively.
is formed, and when the lamp socket 4a is pushed into the mounting hole 7 of the housing, the side walls 23, 2
The protrusions 27 of the connection parts 21b, 22b on the 4 side and the protrusions 27a of the connection parts 21b, 22b on the flange 18 side are configured to be electrically connected to the pair of tongues 8, 8. Thereby, the electrical connection between the terminals 21 and 22 and the tongues 8 and 8 of the conductive circuit pattern 6 is good.

FIG. 11 shows a sixth embodiment, which has basically the same structure as the fifth embodiment, and has the connecting portion 2.
Continuing with the protrusions 27 and 27a provided on the socket body 15a, there are protrusions 28 and 28 on the outer peripheral surface of the socket body 15a.
28a is formed. Note that the protrusion 28
By forming the protrusion 28b so as to surround the outer periphery of a, waterproofness from the outside can also be improved.

FIG. 12 shows the seventh embodiment, which is basically the fifth embodiment.
It has the same structure as the embodiment, and the lamp socket 4 is inserted into the mounting hole 30 formed in the printed circuit board 29.
By pushing and attaching the connecting portion 21b to the top surface of the flange 18, the connecting portion 21b is attached to the printed circuit board 2.
It is configured to be electrically connected to the conductive portion 29a of No.9.

FIG. 13 shows the eighth embodiment, which is basically the second embodiment.
It has the same structure as the embodiment, and the terminal portion 21,
22 outer surface connecting portions 21b, 22b extend to the lower end of the lamp socket 4, and the connecting portions 21b, 22 extend to the lower end of the lamp socket 4.
2b has caulking fittings 31, 32 protrudingly formed, and these caulking fittings 31, 32 connect lead wires 33, 34.
The lead wires 33 and 34 are electrically connected to the connecting portions 21b and 22b by the tightening portions 35 and 36, respectively. This allows power to be supplied through the lead wires 32 and 33 without using a printed board.

FIG. 14 shows the ninth embodiment, which is basically the eighth embodiment.
It has the same structure as the embodiment, and has a lamp socket 4a.
Press-fit holes 37 and 38 are formed at the lower ends of the lead wires 39 and 38 , and conductive pin terminals 41 and 42 connected to the lead wires 39 and 40 are press-fitted and fixed in the press-fit holes 37 and 38 to maintain a conductive state. , 40 to connect to the power supply side.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the elastic material is not limited to rubber, but any suitable material may be selected, and the structure of the terminal portion may be selected depending on the various types of sockets.

〔Effect of the invention〕

In the present invention, the socket body made of an insulating elastic material and the terminal part made of a conductive elastic material are integrally formed, so the assembly work of the terminal part can be eliminated, and the electrical connection state between the lamp and the terminal part can be changed. It is possible to provide a lamp socket that can be held well.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the present invention, FIG. 1 is a partially cutaway exploded perspective view, FIG. 2 is an overall vertical sectional view, and FIG. 3 is a housing, a flexible printed wiring board, and a lamp socket. The perspective view, FIG. 4, and FIG. 5 show the relationship between the second embodiment and the fourth embodiment.
The figure is a partially cutaway exploded perspective view, Figure 5 is an exploded perspective view,
6 and 7 show the third embodiment, FIG. 6 is a partially cutaway exploded perspective view, FIG. 7 is a cross-sectional plan view of the lamp socket, and FIG. 8 is a partially cutaway exploded view showing the fourth embodiment. A perspective view, FIGS. 9 and 10 show the fifth embodiment, FIG. 9 is a partially cutaway exploded perspective view, FIG. 10 is an overall longitudinal sectional view, and FIG. 11 is a perspective view showing the sixth embodiment. , FIG. 12 is a vertical sectional view showing the seventh embodiment, and FIG.
3 is a longitudinal sectional view showing the eighth embodiment, and FIG. 14 is a longitudinal sectional view showing the ninth embodiment. 4, 4a... Lamp socket, 15, 15a... Socket body, 19, 20, 21, 22... Terminal part,
19a, 19b, 20a, 20b, 21a, 21
b, 22a, 22b...connection section.

Claims (1)

[Claims] 1. A socket body made of an insulating elastic material,
At least a pair of terminal portions are formed integrally with the socket body from an electrically conductive elastic material so as to constitute a part of the peripheral wall of the socket body, and have electrical connection portions on the inner side and the outer side. A lamp socket comprising: