JPH074786Y2 - Lamp socket with double-sided contact piece - Google Patents

Description

Description: TECHNICAL FIELD The present application relates to a lamp socket for holding a small lamp, particularly a lamp socket having a double-sided contact piece that can be attached from either side of a printed circuit board that supplies power. Regarding improvement.

2. Description of the Related Art Conventionally, this type of lamp socket penetrates the bottom of a socket body made of a bottomed tubular insulating material having a flange at the top in the diametrical direction and along the inner peripheral surface. A groove is provided, and the lower bent portion of the lower contact piece that holds the lower portion of the upper contact piece by bending is inserted into this groove, and the pair of upper and lower contact pieces are mounted in the socket body. The small lamp is inserted into the socket body of the thus constructed lamp socket from above, and the lead wire of the small lamp is connected to the upper contact piece.

However, according to the above-mentioned conventional configuration, the molding of the socket body is troublesome, the die becomes expensive, and the lower part of the upper contact piece is bent to the lower part of the lower contact piece. There is a defect that the work of pinching and inserting the holding part into the bottom of the socket body is extremely troublesome, resulting in high cost.

Then, this application aims at improving the defect of the above-mentioned conventional thing.

Means for Solving the Problem In order to achieve the above-mentioned object, the present application provides a cylinder part for fitting and holding a lamp integrally with the upper surface of a base part,
A support portion is provided at a position opposed to each other in the diametrical direction of the base portion through a pair of slits which are inwardly intruded from the peripheral surface, and a through hole for inserting a lead wire of a lamp is provided at the bottom portion of the cylindrical portion. The socket body and the upper and lower edges of the side pieces are bent to face the upper contact piece and the lower contact piece, and the connecting pieces for connecting the lead wire of the lamp are provided on both side edges of the lower contact piece. The contact piece is composed of a contact terminal, and the connecting piece is inserted into the slit and bent on the lower surface to be attached to the support portion.
The upper contact piece is inclined forward and downward, and the lower contact piece is bent in a V shape in the width direction, and the lower contact piece is bent to a middle height in the width direction, and the lamp socket of the present application is electrically connected to the printed circuit board. In addition, in order to securely attach mechanically, the upper surface between the support portions of the base portion is provided with inclined projections that are inclined in the same direction, and the bottom surface of the base portion is provided so that the base portion can be easily rotated. A groove for turning operation is formed.

When using the lamp, insert the lamp into the tube, insert the lead wire into the through hole and lead it out to the bottom of the base, wind the lead wire around the connection piece of the contact terminal, and attach it to the support portion. The lower surface of the base plate is pressed, and the supporting portion is held by the connecting piece.In this state, the cylindrical portion is inserted into the mounting hole of the printed circuit board, the base portion contacts one surface of the printed circuit board, and then the base portion is fixed. The upper and lower contact pieces that rotate and oppose each other are pressed against the double-sided electrode layer of the printed circuit board.

In the above, when the inclined projections that are inclined in the same direction are provided on the upper surfaces between the support portions of the base, the printed circuit board is pressed by the inclined projections as the base rotates, and the upper contact piece and the printed circuit board are And are strongly pressed against each other, and the socket body is mounted on the printed circuit board without backlash.

Example Hereinafter, an example of the present application will be described in detail with reference to the drawings. In the socket body (1), a lamp (15) is inserted and held on an upper surface of a disk-shaped base portion (2), and side surfaces facing each other in a diametrical direction. A heat-resistant resin molded body integrally provided with a tubular portion (4) that has a concave groove (3) extending in the axial direction and curved along the peripheral surface in the width direction. At each position of the corresponding base portion (2), a pair of parallel slits (5) that bite inwardly from the peripheral surface slightly dent the upper surface, and the lower half portion is cut off to form a thin plate-like support plate (6). ), And a pair of through holes (7) are provided at the bottom of the tubular portion (4), and are separated by 90 ° from the supporting portions (6) and (6) on the upper surface of the base portion (2). In addition, inclined projections (8) and (8) that make the inclination directions the same are provided symmetrically at two locations in the diametrical direction, and further, on the bottom surface of the base portion (2). A cross-shaped groove (9) is formed so that the socket body (1) can be easily rotated.

The contact terminal (10) is made of, for example, a phosphor bronze plate and, as is apparent from FIGS. 5 and 6, a vertical side piece (1
1) On the upper edge, an upper contact piece (12) that is bent downward in the width direction and is bent in a V shape in the width direction, and on the lower edge so that it extends at a right angle and becomes middle height in the width direction. An upper portion having a bent lower contact piece (13) is connected to a lead wire (16) extending downward from both side edges of the lower contact piece (13) and led out below the lamp (15). Left and right pair of connecting pieces (1
7) and the lower part having (17).

(20) shows a printed circuit board to which a lamp socket is attached and which supplies power to the lamp socket.
0) has a mounting hole (21) and the mounting hole (2
Double-sided electrode layers (22) and (22) are provided on the upper and lower surfaces of 1), respectively.

Then, when using, the lamp (15) is attached to the tubular part (4).
Insert the lead wires (16) into the through holes (7)
And is led out below the base (2). On the other hand, the connection pieces (17) and (17) of the contact terminals (10) and (10) are inserted into the slits (5) and (5), respectively, and the side pieces (11) are engaged with the concave groove (3). Then, in this state, wind the lead wire (16) around one of the connecting pieces (17), and then
7) and (17) are flexibly pressed against the lower surface of the supporting portion (6) in a polymerized manner, and the supporting portion (6) is held by the connecting piece (17).

In this way, the lamp socket of the present application, which is obtained by inserting the lamp (15) and connecting the lead wire (16) to the connecting piece (17), is used as a non-electrode of the mounting hole (21) of the printed board (20). The cylindrical portion (4) is inserted into the mounting hole (21) by aligning the positions of the connection terminals (10) with the diametrically opposed recesses (21) 'at the layer position, and the upper surface of the base portion (2) is the printed circuit board. When the base (2) is rotated while being in contact with one surface of the (20), the eighth
As shown in the figure, the double-sided electrode layer (2
The upper contact piece (12) and the lower contact piece (13) are elastically pressure-contacted with 2) and (22), respectively. In particular, the printed circuit board (20) is pressed by the inclined projections (8) with the rotation of the base (2), and the upper contact piece (12) and the upper electrode layer (22) are strongly pressed to each other. The lamp socket of the present application is attached to the printed circuit board (20) without the lamp.

As described above, according to the present application, the socket body has a simple shape and is easy to mold, and the upper contact piece and the lower contact piece can be integrally formed by bending metal, and ,
Since the supporting portion is held by the connecting piece, the contact terminal can be easily created and attached to the socket body at a low cost, and the connection between the lead wire of the lamp and the contact terminal can be made easily. Be certain, especially claim 3
According to the described configuration, there is an advantage that the mounting state of the printed circuit board and the socket body can be firmly obtained without play.

[Brief description of drawings]

The drawings show an embodiment of the present application, in which FIG. 1 is a plan view with a lamp, FIG. 2 is a partially cutaway front view, and FIG.
The figure is a bottom view of the same, FIG. 4 is a vertical cross-sectional view, FIG. 5 is a side view of a contact terminal, FIG. 6 is a front view thereof, FIG. 7 is a perspective view showing a mounting process to a printed circuit board, and FIG. It is a front view which shows the attachment state. In the figure, (1) is a socket application, (2) is a base portion, (3) is a concave groove, (4) is a cylindrical portion, (5) is a slit, (6) is a supporting portion, (7) is a through hole, (8) is a perspective projection, (9) is a groove,
(10) is a contact terminal, (11) is a side piece, (12) is an upper contact piece, (13) is a lower contact piece, and (17) is a connection piece.

Claims (5)

[Scope of utility model registration request] 1. A cylindrical portion for fitting and holding a lamp is integrally provided on an upper surface of a base portion, and is supported at a position facing each other in a diametrical direction of the base portion through a pair of slits which are inwardly intruded from a peripheral surface. And a socket body in which through holes for inserting the lead wires of the lamp are respectively provided in the bottom of the cylindrical portion, and an upper contact piece and a lower contact piece are bent to face each other at the upper and lower edges of the side piece. In addition, connection pieces that are engaged with the pair of slits and extend downward from the lower surface of the support portion to connect the lead wires of the lamp are vertically provided on both side edges of the lower contact piece in the width direction. A lamp socket having a double-sided contact piece, comprising a contact terminal, a lead wire wound around the connection piece, and the connection piece bent and superposed on the lower surface of the support portion. 2. The upper contact piece is inclined forward and downward,
The lamp socket having a double-sided contact piece according to claim 1, wherein the lamp socket is bent in a V shape in the width direction, and the lower contact piece is bent to a middle height in the width direction. 3. A lamp socket having a double-sided contact piece according to claim 1, wherein inclined projections that are inclined in the same direction are provided on the upper surfaces of the support portions of the base portion. 4. A lamp socket having a double-sided contact piece according to claim 1, 2 or 3, wherein a concave groove for engaging a side piece of the contact terminal is formed on outer peripheral surfaces of the cylindrical portion which are opposed to each other in a diametrical direction. 5. A lamp socket having a double-sided contact piece according to claim 1, 2, 3, or 4, wherein a groove for pivoting operation is formed on the bottom surface of the base portion.