JP2530035Y2 - Lamp socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a lamp socket for mounting a lamp.

[Prior Art] Conventionally, there is a lamp socket as shown in FIG. 11 (see Japanese Utility Model Publication No. 63-33344). In the figure, reference numeral 70 denotes a socket body, and terminal boards 71 and 72 into which lamp pins 74 can be inserted are provided between the socket bodies 70, and the terminal board 72 is urged in the direction of the terminal board 71 by a spring 73. ing. The lamp pin 74 is press-fitted between the terminal plates 71 and 72, and is electrically and mechanically mounted.

[Problems to be solved by the invention]

In a conventional lamp socket, both terminal plates 71 and 72 are formed in the same size, and the outer periphery of the movable terminal plate 72 and the inner surface of the socket body 70 may be rubbed when the lamp is attached or detached. For this reason, there has been a problem that the insertion force of the lamp pin 74 is increased, operability is poor, and electrical contact is unstable.

Also, lead wires (not shown) connected to the terminal boards 71 and 72
The movement of the terminal plate 72 on the movable side causes the rattling of the movable terminal plate 72, and the electrical contact between the lamp pin 74 and the terminal plates 71 and 72 becomes unstable. There is also a problem that the power is transmitted to the lead wires connected to the terminal plates 71 and 72 and adversely affects the solder and the like fixing the lead wires and the terminal plates 71 and 72, and the lead wires are broken.

Therefore, an object of the present invention is to provide a lamp socket that improves the operation of attaching and detaching a lamp, improves the stability of electrical contact between a lamp pin and a terminal plate, and also stabilizes the connection state between a terminal plate and a lead wire. To provide.

[Means for solving the problem]

The lamp socket according to the present invention presses the movable terminal plate against the fixed terminal plate, the movable terminal plate and the fixed terminal plate which are provided in the socket body and in which lamp pins can be inserted between each other, and the movable terminal plate. Comprising a biasing means, integrally forming the movable-side terminal plate and the fixed-side terminal plate via a continuous portion,
The outer shape of the movable-side terminal plate excluding the connecting portion is smaller than the outer shape of the fixed-side terminal plate, and a lead wire connecting piece for connecting a lead wire to the fixed-side terminal plate is provided.

[Action]

According to the lamp socket of the present invention, the outer shape of the movable-side terminal plate urged by the urging means is smaller than the outer shape of the fixed-side terminal plate, of the pair of terminal plates into which the lamp pins are inserted between each other. Even if the movable terminal plate moves when attaching / detaching the lamp pin, it does not rub against the inner surface of the socket body. Further, since the lead wire connecting piece for connecting the lead wire is provided on the fixed terminal plate, the influence of external force due to the movement of the lead wire can be absorbed by the fixed terminal plate. Further, since the lead terminal connecting piece is provided on the fixed terminal plate, the movement of the movable terminal plate when the lamp is attached or detached is not transmitted to the lead wires.

〔Example〕

One embodiment of the present invention will be described with reference to FIGS.

The lamp socket of this embodiment relates to a mini halogen lamp socket. In FIG. 2, reference numeral 10 denotes a socket body, and a pair of terminal insertion holes 11, 12 and lead wire insertion holes 13, 14 communicating with the terminal insertion holes 11, 12.
And a pair of fitting holes 15 and 16 and a mounting hole 17. Reference numerals 18 and 19 denote terminals, as shown in FIG.
A single thin plate is formed by punching and bending, and the movable terminal plate 20 and the fixed terminal plate 21, and these two terminal plates 2
It comprises a connecting portion 22 for connecting 0, 21 and a lead wire connecting piece 23. At the end of the terminal pins 20 and 21 on the lamp pin insertion side,
As shown in the figure, guide portions 24 and 25 each formed by bending outward are formed, and the guide portion 25 of the fixed-side terminal plate 21 is set at a position higher than the guide portion 24 of the movable-side terminal plate 20. ing. FIG. 5 shows a front view of the terminal 18, wherein the fixed-side terminal plate 21 has a larger outer shape than the movable-side terminal plate 20. That is, gaps a, b, and c are formed between the outer shape of the movable-side terminal plate 20, the outer shape of the fixed-side terminal plate 21, and the lead wire connecting piece 23, respectively. Further, the lead wire 26 is connected to the lead wire connecting piece 23.
The terminals 18 and 19 are inserted into the terminal insertion holes 11 and 12, and the lead wires 26 and 26 are inserted through the lead wire insertion holes 13 and 14, respectively. Also, the second
In the figure, reference numerals 27 and 28 denote urging means composed of coil springs, which are inserted into the terminal insertion holes 11 and 12. As shown in FIG. 1, the terminal insertion holes 11 and 12 are formed with an urging means mounting portion 29, and the urging means 27 and 28 are mounted on the urging means mounting portion 29. The portion of the movable terminal plate 20 on the lamp pin insertion side is urged toward the fixed terminal plate 21. The surface 30 of the socket body 10 with which the fixed-side terminal plate 21 abuts is formed in a substantially vertical plane parallel to the fixed-side terminal plate 21. As shown in FIG. 4, the fixed side terminal plate 21 is urged by the urging means 27 to abut the inner surface 30 of the socket body 10 and the outer peripheral edge abuts on the inner surface of the socket body 10 to restrict the movement. Is done. Further, in FIG. 2, reference numeral 31 denotes a cover, and a pair of lamp pin insertion holes 32, 3 are provided.
3 and fitting holes 34 and 35 are formed, and the fittings 36 and 37 are put over the socket body 10 and inserted into the fitting holes 34 and 35 and the fitting holes 15 and 16 of the socket body 10 and swaged. Note that a fixture (not shown) is inserted into the mounting hole 17 of the socket body 10 and fixed to a fixed portion such as a lighting fixture.

6 is a plan view of the lamp socket, FIG. 7 is a side view, and FIG. 8 is a plan view with the cover 31 removed.

FIG. 9 shows a state where the insertion of the lamp pin 38 is started. The tip of the lamp pin 38 is pressed against the guide portion 24 of the movable terminal plate 20 urged in the direction of the fixed terminal plate 21 by the urging means 27. Then, the movable terminal plate 20 is moved against the urging force of the urging means 27, and the lamp pin 38 is inserted between the terminal plates 20, 21 to be electrically and mechanically mounted.

According to the lamp socket thus configured, the fifth
As shown in the figure, the outer shape of the movable terminal plate 20 excluding the connecting portion 22 is smaller than the outer shape of the fixed terminal plate 21, so that only the outer periphery of the fixed terminal plate 21 contacts the inner surface of the socket body 10.
As shown in FIG. 9, when the lamp pin 38 is inserted between the movable terminal plate 20 and the fixed terminal plate 21, the tip of the lamp pin 38 contacts the guide portion 24 of the movable terminal plate 20, and the movable terminal plate
20 is pushed down. However, there is a gap b between the outer shape of the lower side of the movable-side terminal plate 20 and the outer shape of the lower side of the fixed-side terminal plate 21.
(FIG. 5), the lower side of the movable-side terminal plate 20 does not contact the inner surface of the socket body 10. There are also gaps a and c (FIG. 5) between the outer sides of the movable side terminal plate 20 and the outer sides of the fixed side terminal plate 21. It does not touch the inner surface of 10. Therefore, even if the movable terminal plate 20 moves when the lamp pin 38 is attached or detached, the movable terminal plate 20 does not rub against the inner surface of the socket body 10. Therefore, the insertion force and the holding force at the time of attaching and detaching the lamp are reduced by the urging means
It is determined only by the pressing force of 27 and 28, it is easy to set an appropriate value, and the operability of attaching and detaching the lamp can be improved. In addition, poor contact between the lamp pin 38 and the terminal plates 20, 21 due to the contact of the movable side terminal plate 20 with the socket body 10 can be prevented, and the pressing by the urging means 27, 28 at the time of design can be maintained. An electrical contact state can be obtained.

In addition, the terminals 18 and 19 are obtained by punching and bending a single thin plate to integrally form the movable side terminal plate 20, the fixed side terminal plate 21, and the connecting portion 22.
In addition, there is no displacement between the two terminal boards 20 and 21, and the lamp pins 38 can be securely held.

Further, since the lead wire 26 is connected to the lead wire connecting piece 23 adjacent to the fixed side terminal plate 21, the influence of the external force due to the movement of the lead wire 26 can be absorbed by the fixed side terminal plate 21. For this reason, the electrical contact state between the lamp pin 38 and the terminal boards 20 and 21 is further stabilized.

In addition, since the fixed-side terminal plate 21 is provided with the lead wire connection piece 23, the movement of the movable-side terminal plate 20 when the lamp is attached or detached is not transmitted to the lead wire 26, and the connection between the lead wire 26 and the lead wire connection piece 23 is performed. The state stabilizes.

Further, by positioning the fixed-side terminal plate 21, the terminals 18, 1
The position accuracy of 9 improves, and the lamp position accuracy improves. In the conventional positioning, as shown in FIG. 10 (A), the lamp is positioned by the lamp pin insertion hole 50 of one round hole, and the variation of the lamp pin pitch is absorbed by the lamp pin insertion hole 51 of one long hole. I have. Compared with the case of the present invention shown in FIG. 10 (B), D′ min = Dmin, D ′ = D,
D′ max = Dmax, and the deviation of the lamp center position from the center line (CL) is equal to (Dmax−Dmin) / 4 due to variations in the lamp pin pitch. However, considering the ease of inserting the lamp pin, in the conventional example, when inserting the lamp pin into the round hole 50, the hole diameter is only slightly larger than the lamp pin diameter, so it is difficult to insert, and the insertion operability is lower than the invention of the present application. bad. In addition, in the conventional example, since there is a variation in the position of the terminal plate, both the insertion holes 50 and 51 must be slightly larger, so that D'max> Dmax, and the positional accuracy is inferior to the present invention.

The urging means for pressing the movable terminal plate 20 may be a spring body such as a leaf spring other than the coil spring.

[Effect of the invention]

According to the lamp socket of the present invention, the outer shape of the movable-side terminal plate urged by the urging means is smaller than the outer shape of the fixed-side terminal plate, of the pair of terminal plates into which the lamp pins are inserted between each other. Even if the movable terminal plate moves when the lamp pin is attached or detached, the movable terminal plate does not rub against the inner surface of the socket body, so that the operability of attaching and detaching the lamp and the stability of electrical contact are improved.
In addition, since the lead wire connecting piece that connects the lead wire to the fixed terminal plate is provided, the influence of external force due to the movement of the lead wire can be absorbed by the fixed terminal plate, and the electrical contact between the lamp pin and the terminal plate is improved. More stable. Furthermore, since the fixed-side terminal plate is provided with the lead wire connecting piece, the movement of the movable-side terminal plate when the lamp is attached or detached is not transmitted to the lead wire, and the connection between the lead wire and the lead wire connecting piece is stabilized. Is obtained.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of one embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a perspective view of the terminal portion, FIG. 4 is a partial transverse sectional view thereof, and FIG. Front view of terminal, sixth
FIG. 7 is a plan view, FIG. 7 is a side view, FIG. 8 is a plan view of the socket body, FIG. 9 is a partial cross-sectional view, FIG. 10 is an explanatory view for explaining the effect, FIG. The figure is a partial sectional view of a conventional example. 10: Socket body, 20: Movable terminal plate, 21: Fixed terminal plate, 23: Lead wire connecting piece, 26: Lead wire, 27
…… Biasing means, 38 …… Lamp pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A socket body, a movable terminal plate and a fixed terminal plate which are provided in the socket body and into which a lamp pin can be inserted therebetween, and presses the movable terminal plate against the fixed terminal plate. A lamp socket provided with biasing means, wherein the movable-side terminal plate and the fixed-side terminal plate are integrally formed via a connecting portion, and an outer shape of the movable-side terminal plate excluding the connecting portion is the fixed side. A lamp socket characterized in that it is smaller than the outer shape of the terminal plate and is provided with a lead wire connecting piece for connecting a lead wire to the fixed side terminal plate.