JPS6115581Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a socket for a discharge lamp such as a fluorescent lamp, and relates to a terminal that engages and contacts a terminal pin of the lamp.

As shown in FIG. 1 and FIG. 2, a conventional discharge lamp socket of this type has a pair of terminal storage portions formed in a socket body 1, and plate-shaped terminals 2, 2 are formed in each terminal storage portion.
A clamping groove 3 for clamping the terminal pin of the lamp is formed in the terminals 2, 2, and the clamping groove 3 of the terminals 2, 2 is formed using guide grooves 4, 4 formed in the socket body 1 as a guide. A structure is adopted in which the lamp is attached to the socket main body 1 by inserting a terminal pin into the socket. In this structure, if the groove width of the clamping groove 3 of the terminal 2 is narrowed, the moderation during attachment and detachment of the terminal pin will be large and the terminal pin may be deformed, and if the groove width of the clamping groove 3 is widened, the terminal pin The contact with the lamp became unstable, causing the lamp to blacken or flicker, and there was also a risk that the lamp pin could come off the terminal and fall.

The present invention was developed in view of the above-mentioned drawbacks, and it is possible to remove the lamp by relatively moving either the lamp or the socket without rotating the lamp or moving the lamp in the direction of the lamp axis when attaching or detaching the lamp. In a discharge lamp socket that can be attached and detached, the lamp can be attached and detached smoothly, with stable contact between the terminal pins of the lamp and the terminals, and there is no risk of the lamp falling out.
Furthermore, there is no darkening phenomenon or flickering,
The object of the present invention is to provide a discharge lamp socket in which a lamp can be stably lit.

The discharge lamp socket of the present invention includes a socket main body forming a pair of terminal storage sections, and a pair of strip-shaped terminals respectively accommodated in each terminal storage section of the socket main body, and the terminals are arranged at one end. is a wire connection part, and a concave arc-shaped lamp terminal pin receiving part having an inner diameter smaller than the outer diameter of the lamp terminal pin is formed at the other end, and the spring part is bent at an angle of 90 degrees or more in the middle part. and the spring constant of the spring portion and the terminal pin receiving portion is such that the repulsive force of the intermediate portion is large with respect to both ends of the terminal pin receiving portion, and the terminal pin receiving portion is accommodated in each terminal receiving portion of the socket body. Two parallel guide grooves for guiding the terminal pins of the lamp are formed in the terminal pin receiving part of the lamp, and the guide grooves are spaced from the edge of the main body to match the distance between the terminal pins, and the terminals are placed in the guide grooves. It is characterized by having a spring part and a pin receiving part.

With the discharge lamp socket of the present invention, simply align the terminal pins of the discharge lamp with the guide grooves on the socket body and push the lamp downward into the socket, and the terminal pins of the lamp will move along the guide grooves, allowing the terminals to 90
Pressure is applied between the bent spring portion and the terminal pin receiving portion of the terminal pin, the spring portion is bent nearly 180 degrees, and the terminal pin is engaged with the terminal pin receiving portion. When this terminal pin is engaged with the terminal pin receiving part, smooth moderation is obtained because the terminal pin receiving part is formed in a concave arc shape, and when the terminal pin is engaged with the terminal pin receiving part, the elasticity of the spring part is obtained. The terminal pin receiving part is engaged with the terminal pin, and at this time, since the inner diameter of the terminal pin receiving part is formed to be smaller than the outer diameter of the terminal pin, the inner diameter of the terminal pin receiving part expands and the outer circumference of the terminal pin , and the terminal pin is engaged with the terminal pin receiving portion. In other words, when the terminal pin engages with the terminal pin receiving part, it comes into contact with both ends of the terminal pin receiving part, and a force is exerted in the return direction by the repulsive spring force of the spring part, and a force is applied to both ends that pushes them apart. acts, a force acts that causes the intermediate point of the terminal pin receiver to come into contact with the terminal pin, a force acts that causes the intermediate point of the terminal pin receiver to contact the terminal pin, and the terminal pin receiver engages the terminal pin. Therefore, by adjusting the spring constant of the spring part and the spring constant of the terminal pin receiving part and making the repulsive force at the middle part larger than the repulsive force at both ends, the terminal pin receiving part A repulsive force always acts on the three points toward the center of the terminal pin, and a stable contact state is maintained at at least the three points.

Also, when removing the lamp from the socket, by pulling the lamp in the opposite direction to the mounting direction, the spring part resists the spring force due to the pressing force applied to the terminal pin receiving part of the terminal, and the terminal pin receiving part moves into the guide groove of the socket body. The terminal pin is removed from the terminal pin receiving portion and moved along the guide groove, and the lamp is removed from the socket.

Next, the structure of one embodiment of the present invention will be explained with reference to FIGS. 3 to 7 of the drawings.

Reference numeral 10 denotes a socket body made of an insulating material such as synthetic resin, which is shaped like a box and has an opening at the back. The socket main body 10 consists of a circular lamp mounting part 11 and a rectangular socket mounting part 12 provided integrally with the lamp mounting part 11 at the bottom. Inside the lamp mounting section 11, terminal storage sections 14 are insulated on the left and right by partition walls 13.
are formed in pairs on the left and right. A stepped portion 15 widened from side to side is formed at the lower part of the partition wall portion 13 formed at the center, and a substantially central portion of the widened partition wall portion 16 extends from this stepped portion 15 to the socket mounting portion 12 below. A fixing hole 17 for screws, rivets, etc. is bored in the hole. Furthermore, a mounting screw insertion hole 18 that opens on the lower surface is formed at the lower end of this widened partition wall portion 16, and nut storage portions 19 are formed on the left and right in the middle of this mounting screw insertion hole 18.
A square plate nut 20, into which the mounting screw (not shown) is screwed, is fitted into and held at 9.

Further, the terminal housing portion 14 of the socket body 10,
Guide grooves 22, 22 are formed in the guide groove 14 downwardly from the upper end edge, sandwiching the partition wall 13 in a symmetrical manner and spaced apart from each other by the terminal pins 21 of the straight tube discharge lamp.

Further, the terminal housing portion 14 of the socket body 10,
14 has cylindrical projections 23, 23, 24, 24 protrudingly formed on the left and right upper and lower positions of the partition wall 13 with terminal holding gaps between them and the partition wall 13, respectively. Also, the main body 1 is located on the left and right sides of the widening partition wall portion 16.
Protrusions 25, 25 protruding from the inner wall surface of 0 are protruded from both sides of the widened partition wall portion 16, respectively, with a gap therebetween.

Also, the socket mounting portion 1 of the socket body 10
Reference numerals 2 and 12 denote a wire installation portion 2 in which a wire outlet 26 is opened on the lower surface of the socket body 10 between the inner wall surface of the socket body 10 and both sides of the widened partition wall portion 16.
7 and 27 are formed.

Next, 28, 28 are strip-shaped terminals made of a copper alloy having spring properties such as phosphor bronze, and one end is connected to the wire 3.
A wire connection portion 29 is formed to which the wires 3 and 3 are connected by electric welding or soldering.
The widened partition wall section 16 and the partition wall section 13 are adjacent to each other.
A bent portion 30 is formed along the stepped portion 15 of the holder. Further, the intermediate portions of the terminals 28, 28 have spring portions 31 which are folded back at an angle of 90 degrees or more, and the other ends of the terminals 28, 28 are fitted into the guide grooves 22, 22 of the socket body 10. The terminal pin receiving parts 32, 32 of the electric wire connecting part to be located are formed in a concave arc shape toward the outside, and the terminal pin receiving parts 32, 3
The inner diameter of the terminal pin 21 is smaller than the outer diameter of the terminal pin 21. The spring constant of the spring portion 31 and the spring constant of the terminal pin receiving portion 32 are set so that the repulsive force of the intermediate portion 32c is larger than the repulsive force of both ends 32a and 32b of the terminal pin receiving portion 32.

The terminals 28 and 28 connect the wire connecting portion 29 to which the wire 33 is connected to the wire connecting portions 27 and 2, respectively.
7 and held between the protrusion 25 and the widened partition wall part 16, the bent part 30 is placed along the step part 15, and the part along both sides of the partition wall part 13 is held between the protrusion 25 and the widened partition wall part 16.
Hold at 4,24. In this state, the upper protrusion 2
Middle spring part 3 bent from position 3, 23
1 and 31 are held downward and terminal pin receiving parts 32,
32 is held near the inner ends of the guide grooves 22, 22, and the terminals 28, 28 are attached to the socket body 10 facing each other. A fitting step 34 for a cover (not shown) is formed inside the inner circumferential wall 10a of the socket main body 10, and the cover is fitted into the step 34 so that a screw or the like fixed to the fixing hole 17 can be attached. Install it. Further, it is attached to the mounting base using a mounting screw screwed into a nut 20 through a mounting screw insertion hole 18 opened on the lower surface of the socket body 10.

Next, the operation of this embodiment will be explained.

Simply align the terminal pins 21 of a discharge lamp such as a straight tube fluorescent lamp with the guide grooves 22, 22 of the socket body 10, and push the lamp downward into the socket.
, and presses between the spring portion 31 of the terminals 28, 28, which is bent at 90 degrees or more, and the receiving portion 32 of the terminal pin 21, so that the spring portion 31 bends to nearly 180 degrees, and the terminal pin 21 is engaged with the receiving portion 32. When the terminal pin 28 is engaged with the receiving part 32, smooth moderation is obtained because the receiving part 32 is formed in a concave arc shape, and when the terminal pin 21 is engaged with the receiving part 32, the spring part 31 has elasticity. At this time, the receiving part 32 is engaged with the terminal pin 21. At this time, since the inner diameter of the receiving part 32 is formed to be smaller than the outer diameter of the terminal pin 21, the inner diameter of the receiving part 32 expands and the outer circumference of the terminal pin 21 increases. , and the terminal pin 21 is engaged with the receiving portion 32 . That is, the terminal pin 21 is inserted into the receiving portion 32 as shown in FIG.
When it engages, it contacts both ends 32a and 32b of the receiving part 32, and a force acts in the return direction due to the repulsive spring force of the spring part 31, and a force that pushes the ends 32a and 32b apart acts. , the middle part 32 of the receiving part 32
A force acts to cause c to contact the terminal pin 21,
Since the receiving part 32 is engaged with the terminal pin 21, the spring constant of the spring part 31 and the spring constant of the receiving part 32 are adjusted so that the repulsive force of the intermediate part 3 is lower than the repulsive force of both ends 32a and 32b.
By increasing the repulsive force of the terminal pin 2c, the repulsive force of the receiving part 32 always acts on the three points of both ends 32a, 32b and the middle part 32c toward the center of the terminal pin 21.
A stable contact state is maintained at these at least three points.

Also, when removing the lamp from the socket, pull the lamp in the opposite direction to the direction in which it is installed, and the terminal 28,
28, the receiving part 32 retreats from the guide grooves 22, 22 of the socket main body 10 against the spring force from the spring part 31, and the terminal pin 21 is removed from the terminal pin receiving part 32 and guided. Moving along the groove 22, the lamp is removed from the socket.

In this way, the lamp can be easily attached and detached by holding the lamp in a horizontal position and pushing it in or pulling it out without rotating the lamp in the circumferential direction or moving it in the axial direction.

It is also possible to attach and detach the lamp by holding the lamp and moving the socket.

According to the present invention, each of the pair of terminals has one end formed as a wire connection portion, the other end formed as a concave arc-shaped lamp terminal pin receiving portion having an inner diameter smaller than the outer diameter of the lamp terminal pin, and an intermediate portion formed as a concave arc-shaped lamp terminal pin receiving portion. A spring portion is formed by bending the terminal pin at an angle of 90 degrees or more, and the spring constant of this spring portion and the terminal pin receiving portion is set so that the repulsive force of the intermediate portion is large with respect to both ends of the spring receiving portion. Two parallel guide grooves for guiding the terminal pin are formed in the terminal pin receiving part of the terminal, and the spring part and spring receiving part of the terminal are arranged in the guide groove, so that the lamp can be rotated or moved in the direction of the lamp axis. The terminal pin can be easily attached and detached by pushing or pulling the terminal pin along the guide groove without letting the terminal slide. The holding force acts toward the center of the lamp, and the terminal pin of the lamp comes into stable contact with the terminal socket, and there is no risk of blackening of the lamp. The lamp does not turn on and there is no risk of the lamp falling out of the socket, increasing safety.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional discharge lamp socket, Figure 2 is a front view of a conventional discharge lamp socket;
Figure 3 is a front view of a discharge lamp socket showing an embodiment of the present invention, Figure 4 is a rear view with the cover removed, Figure 5 is a perspective view of the terminal, FIG. 6 is an explanatory diagram showing a state in which a terminal pin is attached to the same terminal, and FIG. 7 is an explanatory diagram showing a state in which the same terminal pin is attached. 10...Socket body, 14...Terminal storage part,
21...Terminal pin, 22...Guide groove, 28...Terminal, 29...Wire connection part, 32...Terminal pin receiving part.

Claims (1)

[Scope of utility model registration request] A socket body forming a pair of terminal storage parts,
A pair of strip-shaped terminals are housed in each terminal housing section of the socket body, and one end of the terminal serves as a wire connection part, and the other end has a wire connection part with a diameter smaller than the terminal pin of the lamp. A terminal pin receiving part of the lamp is formed in the shape of a concave arc having an inner diameter, a spring part is formed with the middle part bent at an angle of 90 degrees or more, and the spring constant of this spring part and the terminal pin receiving part is set to A guide groove is formed in which the repulsive force of the middle part is large with respect to both ends of the socket body, and guides the terminal pin of the lamp to the terminal pin receiving part of the lamp of the terminal stored in each terminal housing part of the socket body. A discharge lamp socket characterized in that two parallel strips are formed from the edge of the main body at intervals corresponding to the intervals of the terminal pins, and a spring portion and a pin receiving portion of the terminal are disposed within the guide groove.