JPS5924511B2 - socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sockets for glow lamps, confirmation lamps, etc., and its purpose is to reduce the cost of electrode plate materials and simplify the forming process, thereby reducing costs. In the case of a conventional socket, as shown in FIG.
An electrode protrusion 5 was disposed on the inner bottom surface 4 of the socket body 3, and an electrode tube 7 into which the base portion 2 could be screwed was arranged and fixed on the inner peripheral surface of the socket body 3.

However, in such a conventional example, since the electrode tube T is formed in a cylindrical shape, it is necessary to use a large amount of a good conductive material to form the electrode tube, resulting in the problem of high material costs. In addition, the process of forming the electrode cylinder required two stages of complicated drawing process, and the cost of the process was high.
As shown in Publication No. 4, there was a socket in which screw strips or electrode plates were arranged at three locations on the inner peripheral surface of the socket in order to save on metal material costs and drawing processing costs, but two pieces of lampro gold were used. Since it is supported at three points by the screw strip and one electrode plate, the material cost is not much saved (9), and there is also the disadvantage that the number of parts increases and the number of assembly steps increases.The present invention The present invention has been provided in view of the above points, and one embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 3 denotes a socket body, which is formed into a cylindrical shape with a bottom and made of synthetic resin.The inner diameter of the socket body 3 is approximately the same as the outer diameter of the base part 2, and a glow lamp, a confirmation lamp, or a normal lamp is installed inside the socket body 3. Base part 2 of lamp 1 like an incandescent bulb
It is possible to insert .

Reference numeral 5 denotes an electrode protrusion made of a conductive spring material, which is fixed to the side part between the ribs 8 and 8 on the bottom surface 4 of the socket body 3 with a rivet 9, and the spring protrusion 5a of the electrode protrusion 5 is the bottom 4
It is made to protrude elastically at the center.

Further, recesses 10 are formed at key points on the inner circumferential surface of the socket body 3 in parallel to the axial direction of the socket body 3. Reference numeral 06 is an electrode plate formed by pressing a sheet metal material, and the lower end of the electrode plate 6 is folded. The bent portion 6a is fixed to the bottom surface of the socket body 3 by a rivet 12 at a distance from the electrode protrusion 5, and is disposed within the recess 10 in the inner peripheral surface of the socket body 3. Further, the electrode plate 6 has a shape obtained by cutting out a part of the electrode tube 7 into which the base part 2 of the lamp 1 is screwed, and has a wavy bend that fits a part of the thread groove of the base part 2. , and is curved in an arc shape in the width direction to match the shape of the outer peripheral surface of the base portion 2 . Therefore, when screwing the base part 2 of the lamp 1 onto the socket body 3, by screwing the base part 2 of the lamp 1 through the opening of the socket body 3, the electrode plate 6 disposed part on the inner peripheral surface of the socket body 3 is screwed. The position is regulated by the other circumferential surface, and a part of the thread groove on the circumferential surface of the base part 2 engages with the wavy bend of the electrode plate 6, forming a female thread part around the entire circumference as in the case of the conventional electrode tube 7. The base portion 2 can be screwed together in the same manner as in the case. In the embodiment shown in FIG.
The position of the base portion 2 is regulated by the entire circumferential surface other than the inner surface where the electrode plate 6 is disposed. In the embodiment shown in FIG. are protruded at equal intervals in the circumferential direction, and the diameter of the circle drawn inside the socket body 3 in contact with each tip of these convex veins 11 is approximately equal to the outer diameter of the cap portion 2, and the concave portions between the convex veins 11 are An electrode plate 6 is disposed at a position 10, and the protruding veins 11 regulate the position of the mouthpiece 2 so that the threaded groove of the mouthpiece 2 engages with the wavy bend of the electrode plate 6.

In addition, when the cap part 2 is screwed into the socket body 3, the electrode plate 6 is curved so as to bulge inward or curved in an arc shape in the width direction by reducing the curvature in the vertical middle part of the electrode plate 6. The wavy bend of the electrode plate 6 may be firmly engaged with the thread groove of the base part 2 by the spring force of the electrode plate 6. As described above, in the present invention, the outer diameter of the base part of the lamp is approximately the same as that of the base part of the lamp. An electrode protrusion is protruded from the bottom of a bottomed cylindrical socket body made of an insulating material formed on the inner diameter of the socket, and an electrode plate made of a sheet metal having a wavy bend that conforms to a part of the thread groove of the mouthpiece is attached to the socket. Since it is placed on a part of the body's periphery, there is no need to form an electrode tube that requires a large amount of highly conductive material as in conventional sockets, and therefore material costs can be significantly reduced. In addition, the electrode plate can be formed by simple press processing without requiring the complicated drawing process that is required for conventional electrode tubes, reducing the labor and cost required for the processing process. It has the effect of

Furthermore, a sheet metal electrode plate with a wavy bend that conforms to a portion of the thread groove of the cap is placed in a recess provided on the inner circumferential surface of the socket, so the depth of the recess is approximately equal to the thickness of the sheet metal. By making them the same, the electrode plate can be sunk into the recess by the thickness of the plate, and only the peak portion of the electrode plate that fits the thread groove of the mouthpiece can protrude from the inner circumferential surface of the socket. Therefore, by making it possible to insert the mouthpiece into a hole formed with an inner diameter that is approximately the same as the outer diameter of the mouthpiece, the mouthpiece can be positioned at a location other than the electrode plate installation area on the inner periphery of the socket. As a result, the screw groove of the cap part is screwed into the crest of the electrode plate, and the cap part is supported and connected without rattling.As a result, there is no need to install multiple electrode plates with wavy bends in the socket body. Since it is only necessary to provide the material, it is possible to reduce the material cost and shorten the manufacturing process. Further, according to the combined invention shown in the embodiment of FIG. 4, the wavy electrode plate is arranged at one place that divides the inner circumferential surface of the socket body into three equal parts, and the convex veins that are continuous in the vertical direction are integrated at the other two places. Because of the protruding structure, the base can be stably supported by one electrode plate and two protrusions, and therefore only one electrode plate is required, similar to the socket shown in Figure 1. This has the effect of reducing material costs and assembly man-hours.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is a perspective view of the electrode plate of the above, and Fig. 3 is a perspective view of a lamp (glow lamp) attached to the embodiment of the above. FIG. 4 is a partially cutaway perspective view of another embodiment of the present invention, and FIG. 5 is a partially cutaway perspective view of a conventional example, in which 1 is a lamp, 2 is a base,
3 is a socket body, 4 is a bottom surface, 5 is an electrode protrusion, 6 is an electrode plate, and 11 is a convex vein.

Claims (1)

[Scope of Claims] 1. An electrode protrusion is disposed on the bottom surface of a bottomed cylindrical socket body made of an insulating material and whose inner diameter is approximately the same as the outer diameter of the base of a lamp such as a glow lamp or a confirmation lamp. A sheet metal electrode plate, which has a wave-like bend that conforms to a part of the thread groove of the base and is bent into an arc shape that conforms to the shape of the outer circumferential surface of the base, is provided at one location on the inner circumferential surface of the socket. A socket characterized in that it is arranged in a recessed area. 2. An electrode protrusion is arranged on the bottom of a cylindrical socket body made of an insulating material with an inner diameter slightly larger than the outer diameter of the cap of a lamp such as a glow lamp or a confirmation lamp, and A sheet metal electrode plate, which has a partially wavy bend and is curved into an arc to match the shape of the outer circumferential surface of the mouthpiece, is arranged at one place that divides the inner circumferential surface of the socket into three equal parts. A socket characterized by integrally protruding convex veins that are continuous in the vertical direction at two other locations.