JP3089490B2 - Screw socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a substantially cylindrical receiving member made of a conductive material such as a copper alloy, so that even if a base of a mounted lamp is loosened, trouble such as non-lighting does not occur. It relates to a screw-in socket.

[0002]

2. Description of the Related Art In general, a screw-in socket is formed into a substantially cylindrical body having a substantially cylindrical bottomed body made of an insulating material such as porcelain or plastic, and a screw provided on a peripheral side surface of a conductive material such as a copper alloy. The lamp is equipped with the formed receiver, and the base of the lamp is screwed in so that the lamp is mounted. In such a screw-in socket, when vibration or the like is applied, the mounting state of the lamp in the screw-in socket is loosened,
There is a possibility that a problem such as non-lighting of the lamp may occur.

[0003] Therefore, in the conventional screw-in socket, the following various structures have been proposed in order to prevent the mounted lamp from being loosened due to vibration or the like during use and not being turned on.

Japanese Utility Model Publication No. Sho 49-10128 discloses that a U-shaped cut is made in a peripheral wall of a substantially cylindrical receiving port provided with a thread made of a conductive material such as a copper alloy so that the lower end is in a floating state. A threaded socket in which a tongue-shaped pressing portion is provided, and an elastic body having a partially cut-out annular portion is attached to the outside of the pressing portion and the pressing portion is elastically pressed to the inside of the receiving port, is described. ing. Although the screwed socket can prevent the mounted lamp from being loosened, there is a problem in that it is necessary to form a U-shaped cut in a substantially cylindrical receiving hole, which takes a lot of man-hours.

In Japanese Utility Model Application Laid-Open No. 53-93075, a metal screw cylinder is provided with a rectangular through hole, and a metal band spring is bent in an arc shape between the metal screw cylinder and an inner wall mainly composed of a socket. A threaded socket provided with its abdomen partially inserted into a metal screw cylinder is described. Even with this screwed socket, the mounted lamp can be prevented from loosening, but it is necessary to provide a rectangular through-hole in a substantially cylindrical metal screw cylinder, and there is a problem that it takes a lot of man-hours to attach the metal band spring and the like.

[0006] Japanese Utility Model Application Laid-Open No. 56-54592 discloses a press-contacting piece portion in which a pair of cut grooves are formed in a side wall of a cylindrical receiving metal having a thread groove formed on a side face and spaced apart along an axial direction. And a screw-in socket in which the pressure-contacting piece is projected inward of the receiving metal. Even with this screwed socket, it is possible to prevent the mounted lamp from being loosened, but a cut groove must be formed in the cylindrical receiving metal, and the pressure contact piece must be protruded inward of the receiving metal, There is a problem that it takes man-hours.

Further, Japanese Utility Model Laid-Open Publication No. Sho 62-40788 discloses that a plurality of slits are formed in the side wall of a cylindrical screw-type receiving bracket in the axial direction from the opening end, and the slit is engaged with the screw of the mouthpiece and elastically pressed to rotate. There is described a screw-in socket provided with a projection on the opening end side for suppressing the protrusion. Even with this screw-in socket, it is possible to prevent the mounted lamp from being loosened. However, it is necessary to provide a slit in the side wall of the cylindrical screw-in type receiving bracket, and there is a problem that the number of steps is increased.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a screw-in socket which has a simple structure and is easy to manufacture, and which can securely prevent a lamp to be mounted from being loosened.

[0009]

A screw-in socket according to the present invention comprises a socket body, a base having a base insertion opening at one end, and a female screw formed on a peripheral side surface and provided on the socket body. in threaded socket having a small diameter portion for elastically holding the cap spread receiving metal in a die mounted state a smaller diameter than the mouthpiece is in the non-mounted state, the small diameter portion is smaller than partially cap the diameter of the internal thread of the socket member And a continuous surface with respect to the peripheral side surface.
Those provided so as to.

The small diameter portion may be provided by reducing the diameter of the female screw of the receiving metal, reducing the diameter of the valley of the female screw of the receiving metal, or reducing the slope of the female screw of the receiving metal. Good.

[0011] The screw-in socket according to the present invention comprises:
A socket body, having a base insertion opening at one end and having a female screw formed on the peripheral side surface and having a socket provided on the socket body, has a smaller diameter than the base when the base is not mounted, and expands when the base is mounted. in threaded socket having a small diameter portion for elastically holding the socket member, said small diameter portion is partially flatly deformed inwardly of the socket member the receiving metal, and said circumferential
It may be provided so as to be continuous with the side surface .

[0012]

[0013]

1 to 3 show an embodiment of the present invention, which will be described below with reference to the drawings.

In this screwed socket, a socket body 1 is formed in a cylindrical shape having a bottom with a porcelain or a thermosetting resin having characteristics such as insulation properties and heat resistance. Denotes a lamp mounting chamber 3 into which a lamp base is inserted, and a terminal chamber 4 having a terminal to which an electric wire is connected.
Is provided.

In the lamp mounting room 3, a socket body 1 is provided.
And a receiver 5 which is formed of an elastic conductive material such as a copper alloy and is formed in a substantially cylindrical shape and which is screwed into the base of the lamp, and is insulated from each other. And a center contact piece 7 which is attached to a substantially central portion of the bottom wall 2 and is urged toward the opening side by the pressing pressure 6 to contact the center contact of the lamp.

The terminal room 4 is provided with a pair of terminal plates 8 to which electric wires are connected. The terminal plates 4 and the center contact pieces 7 are attached to the bottom wall 2 of the socket body 1 by assembly screws 9 respectively. , Receiving member 5 and center contact piece 7.

The receiving metal 5 has a female screw 10 formed on the peripheral side wall, and a valley 11 of the female screw 10 is formed to have a standard diameter corresponding to the base of the lamp. On the other hand, a small-diameter portion 13 having a diameter smaller than the standard and corresponding to the valley of the base of the lamp is partially formed on the crest 12 of the female screw 10 in a straight line on the opposing sides of the receiver 5 one by one. The tip is formed to partially protrude.

In this screw-in socket, when the lamp is mounted, the valley of the base hits the small diameter portion 13 of the receiver 5, and the receiver 5
Is elastically deformed to elastically hold the base with the entire receiver 5.
Although it is easy to manufacture with a simple configuration, the lamp is unlikely to be loosened even when vibrations or the like are applied, and there is no problem such as non-lighting.

FIG. 4 shows a second embodiment of the present invention, in which the small-diameter portion 13 is formed to project at three locations in the form of a curved projection, and the same operation and effect as in the previous embodiment are achieved. .

FIG. 5 shows a third embodiment of the present invention. The female thread 10 of the receiving metal 5 has a smaller diameter than the standard by increasing the diameter of the bottom of a part of the valley 11. A small-diameter portion 13 corresponding to a peak of a base 14 of the lamp is formed so as to partially protrude from a part of the valley 11. In this screw-in socket, when the lamp is mounted, the peak of the base 14 hits the small-diameter portion 13 of the receiver 5 and acts in the same manner as in the previous embodiment, and has the same effect.

FIG. 6 shows a fourth embodiment of the present invention. Unlike the third embodiment shown in FIG. 5, the small-diameter portion 13 is formed in a planar shape. ing.

FIG. 7 shows a fifth embodiment of the present invention. In the female screw 10 of this receiver 5, the diameters of the valleys 11 and the ridges 12 are formed as specified. On the other hand, valley 1
A small-diameter portion 13 that protrudes slightly toward the center of the receiver 5 and that abuts on the slope of the base 14 is partially formed on the slope 15 connecting the 1 and the mountain 12. In this screw-in socket, when the lamp is mounted, the inclined portion 15 between the crest and the valley of the base 14 hits the small-diameter portion 13 of the receiver 5 and acts in the same manner as in the previous embodiment, and has the same effect. ing.

FIGS. 8 to 10 show a sixth embodiment of the present invention. In this screw-in socket,
The female screw 10 has a regular circumference based on the standard,
The outer shape in accordance with the standard is formed in the vicinity of the end portion of the lamp base insertion opening side so as not to hinder the mounting of the base. Then, the receiving base 5 is formed in a substantially elliptical shape so that the short diameter is smaller than the diameter of the base of the amplifier lamp at an intermediate portion slightly inward from the lamp base insertion opening end. And has a small diameter portion 13.
As shown in FIG. 10, the receiver 5 is formed by squeezing a shape having a standard shape at two locations. Then, in this screw-in socket, as the lamp is mounted, the base of the lamp hits the small-diameter portion 13 of the receiver 5, and the base pushes out the small-diameter portion 13 of the receiver. As a result, the same operation as in the previous embodiment is performed. Has the same effect.

FIG. 11 shows a seventh embodiment of the present invention. Unlike the sixth embodiment, three small-diameter portions 13 are formed, but the same operation and effect can be obtained.

FIGS. 12 to 17 show an eighth embodiment of the present invention. Deposit 5 for this screw-in socket
The peripheral side wall on which the female screw 10 is formed is vertically divided into two at two locations along the lamp mounting direction, and is connected at the bottom surface 16. In the vicinity of the lamp base insertion opening end of the divided edge 17 obtained by dividing the receiving metal 5 into two parts, stoppers 18 are provided which protrude radially outward of the receiving metal 5 and come into contact with each other when the lamp is not mounted. A substantially C-shaped elastic ring 19 is fitted on the outer surface of the side wall of the receiver 5 near the opening end of the lamp. When the lamp is not mounted, the stoppers 18 come into contact with each other to reduce the diameter of the receiver 5 and reduce the diameter. The part 13 is formed as a whole. And when the lamp is installed,
The base 5 having the small diameter portion 13 formed by the base of the lamp is opened against the elastic ring 19 and the like, and the base 5 elastically holds the base of the lamp. This prevents problems from occurring.

The socket 5 of the screw-in socket is not formed by drawing in a cylindrical shape as in the conventional socket, but is formed by pressing through the steps shown in FIGS. .

FIGS. 18 and 19 show a ninth embodiment of the present invention. The socket 5 of this screw-in socket is
One portion of the peripheral side wall where the female screw 10 is formed is vertically divided along the lamp mounting direction. A substantially C-shaped elastic ring 19 is provided on the outer surface of the side wall of the receiver 5 near the lamp mounting opening end.
When the lamp is not mounted, the diameter of the receiver 5 is reduced so that the small-diameter portion 13 is formed as a whole. Then, when the lamp is mounted, the base 5 having the small diameter portion 13 formed by the base of the lamp is opened against the elastic ring 19 and the like, the base 5 elastically holds the base of the lamp, and vibration and the like are reduced. In addition, it is possible to prevent the lamp from becoming loose and causing trouble such as no lighting.

The receiving socket 5 of this screw-in socket is also formed by pressing instead of being formed by drawing in a cylindrical shape as in the conventional receiving socket.

The socket body 1 is not limited to a cylindrical shape, but may have another shape.

[0030]

As described above, according to the present invention, it is possible to realize a screw-in socket which has a simple structure and is easy to manufacture, and which can surely prevent loosening of a lamp to be mounted.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing the receiving money of the first embodiment of the present invention.

FIG. 3 is a cross-sectional front view of a main part showing a receiver according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a receiver according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional front view of a main part showing a receiver according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional front view of a main part showing a receiver according to a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional front view of a main part showing a receiver according to a fifth embodiment of the present invention.

FIG. 8 is a plan view showing a receiver according to a sixth embodiment of the present invention.

FIG. 9 is a cross-sectional front view of a main part showing a receiver according to a sixth embodiment of the present invention.

FIG. 10 is a schematic view showing a state in which a small-diameter portion of a receiver according to a sixth embodiment of the present invention is formed.

FIG. 11 is a schematic view showing a state in which a small-diameter portion of a receiver according to a seventh embodiment of the present invention is formed.

FIG. 12 is a perspective view showing a receiver according to an eighth embodiment of the present invention.

FIG. 13 is a sectional front view showing a receiver according to an eighth embodiment of the present invention.

FIG. 14 is a plan view showing an operation of receiving money according to an eighth embodiment of the present invention.

15A and 15B show a material development state of a receiver according to an eighth embodiment of the present invention, wherein FIG. 15A is a plan view and FIG. 15B is a side view.

16 (a) is a plan view and FIG. 16 (b) is a side view showing a state in which a female screw is formed in a receiving metal according to an eighth embodiment of the present invention.

FIGS. 17A and 17B show a receiver according to an eighth embodiment of the present invention, wherein FIG. 17A is a plan view and FIG. 17B is a side view.

FIG. 18 is a perspective view showing a ninth embodiment of the present invention.

FIG. 19 is a plan view showing an operation of receiving money according to a ninth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket main body 2 Bottom wall 3 Lamp mounting room 4 Terminal room 5 Receiving metal 7 Center contact piece 10 Female thread 11 Valley 12 Mountain 13 Small diameter part 15 Slope part 19 Elastic ring

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01R 33/22 H01R 33/97

Claims (5)

(57) [Claims] 1. A socket body having a base insertion opening at one end and a female screw formed on a peripheral side surface and having a female screw provided on the socket body. When the base is not mounted, the base has a smaller diameter than the base and the base is mounted. in threaded socket having a small diameter portion receiving metal for a die elastically held spread in the small-diameter portion, the diameter of the internal thread of the socket member partially protrudes formed inwardly of the socket member to a smaller diameter than the mouthpiece , And connected to the peripheral side surface.
A screw-in socket characterized by being provided as a connecting surface . 2. The screw-in socket according to claim 1, wherein a small diameter portion is provided by making a thread of a female screw of the receiving metal small. 3. The screw-in socket according to claim 1, wherein a small-diameter portion is provided by making a valley of a female screw of the receiving metal small. 4. The screw-in socket according to claim 1, wherein the slope portion of the female screw of the receiving metal has a small diameter to provide a small diameter portion. 5. A socket body having a base insertion opening at one end and a female screw formed on a peripheral side surface and having a female thread provided on the socket body, wherein the base is mounted in a smaller diameter than the base when the base is not mounted. in threaded socket having a small diameter portion receiving metal for a die elastically held spread in the small-diameter portion, socket member partially flatly deformed inwardly of the socket member to and to the peripheral side surface A screw-in socket provided to be a continuous surface .