JPH0573892U - Screwed socket - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a screwed socket capable of keeping the insulation distance between the base contact piece and the center contact piece constant. [Structure] A cylindrical socket body 1 having a female threaded portion 4 and a bottom portion 6 on an inner peripheral surface 20, and a mouthpiece penetrating the bottom portion 6 from the outside and arranged axially along the inner peripheral surface 20. Contact piece 2
And a central contact piece 3 penetrating the bottom part 6 from the outside and being bent on the inner surface of the bottom part 6 and extending parallel to the base contact surface 21 of the base contact piece 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a screwed socket.

[0002]

[Prior Art]

 Conventional examples are shown in FIGS. That is, this screwed socket has a cylindrical socket main body 83 having an internal thread portion 81 on an inner peripheral surface 80 and a bottom portion 82, and penetrating through the bottom portion 82 and arranged axially along the inner peripheral surface 80. A base contact piece 84, and a central contact piece 85 penetrating the bottom portion 82 so as to face the base contact piece 84 and bent upward to the inner surface of the bottom portion 82 so that the tip end portion approaches the base contact piece 84. I have it. Reference numeral 86 is a mounting surface formed on the outer surface parallel to the axial direction, reference numeral 87 is a clearance clearance of the mouthpiece contact piece 84, and 88 is a through hole of the mouthpiece contact piece 84 and the center contact piece 85.

[0003]

[Problems to be solved by the device]

 However, this screw-in socket has a drawback in that the insulation distance from the base contact piece 84 of the different pole cannot be kept constant due to the variation of the bending position of the center contact piece 85. Therefore, an object of the present invention is to provide a screw-in socket capable of keeping a constant insulation distance between the base contact piece and the center contact piece.

[0004]

[Means for Solving the Problems]

 According to another aspect of the present invention, there is provided a threaded socket having a cylindrical socket body having an internal thread portion on an inner peripheral surface and a bottom portion, and an axially extending axially extending through the bottom portion from the outside. A base contact piece and a central contact piece which penetrates the bottom portion from the outside and is bent on the inner surface of the bottom portion and extends parallel to the base contact surface of the base contact piece.

According to a second aspect of the present invention, in the screwed socket according to the first aspect, the socket body has a mounting surface on an outer surface parallel to the axial direction, and the socket body has a bottom surface that penetrates the base contact piece and the center contact piece. A pair of through holes are formed on the mounting surface side so as to form a substantially inverted V shape.

[0006]

[Action]

 According to the screw socket of claim 1, since the central contact piece is bent on the inner surface of the bottom portion so as to extend parallel to the mouthpiece contact surface of the mouthpiece contact piece, the center contact piece is bent on the bottom portion of the socket body. It is possible to secure a constant insulation distance between the base contact piece and the center contact piece regardless of variations in position.

According to a second aspect of the present invention, there is provided a screw socket according to the first aspect, wherein the socket body has a mounting surface on an outer surface parallel to an axial direction, and the socket contact piece and the central contact piece penetrate through the socket body. Since the pair of through holes at the bottom are formed on the mounting surface side so as to form a substantially inverted V shape, the terminal portion of the base contact piece and the center contact piece is attached to the bottom of the socket body in addition to the function of claim 1. Since it is located on the surface side, there is about half the empty space on the side opposite to the mounting surface, which allows the overall size to be reduced and it can be mounted and used in a small space on the equipment.

[0008]

【Example】

 A first embodiment of the present invention will be described with reference to FIGS. That is, this screw socket has a socket body 1, a base contact piece 2, and a center contact piece 3. The socket body 1 has a cylindrical shape having an internal thread portion 4 on the inner peripheral surface 20 and a bottom portion 6. In the embodiment, the mounting surface 5 is provided on the outer surface parallel to the axial direction, and the pair of through holes 7 and 8 of the bottom portion 6 penetrating the base contact piece 2 and the center contact piece 3 are substantially opposite to each other on the mounting surface 5 side. It is shaped like a letter. The mounting surface 5 is formed on the mounting portion 11 that projects outward from the socket body 1, and the flexure clearance 10 formed on the inner peripheral surface of the socket body 1 along the through hole 7 is mounted as shown in FIG. It is provided at a position inside the portion 11. Therefore, it is not necessary to reduce the wall thickness of the tubular portion of the socket body 1. Further, the female screw portion 4 is formed with a plurality of axial notches 9. The outer surface side of the bottom portion 6 of the socket body 1 extends outward from the mounting surface 5 of the mounting portion 11 in the axial direction in parallel with the terminal receiving portion 12, and further from the both sides of the terminal receiving portion 12 at the center position of the socket body 1. A side wall 17 is erected at a height, and an electric wire insertion hole 23 is formed in this side wall 17. The cover 13 is provided with locking claws (not shown), screws (not shown), etc. so as to cover the portion surrounded by the side wall 17 and the terminal receiving portion 12, but as shown in FIG. A pressing pin 14 for pressing the bent step portion 18 in the middle portion of the piece 3 and the base contact piece 2 is provided in a protruding manner. Reference numeral 15 is a socket mounting screw hole, and 16 is a supporting portion for supporting the base end portion of the quick-connecting piece 19, which is parallel to the through holes 7 and 8.

The mouthpiece contact piece 2 penetrates the bottom portion 6 from the outside and is axially arranged along the inner peripheral surface 20, and in the embodiment, the flexure clearance allowance 10 passes through the through hole 7. It is located in. The mouthpiece contact piece 2 is formed of a strip plate, and as shown in FIG. 6, the middle portion is bent into a Z shape to form a bent step portion 18. The mouthpiece contacting surface 21 of the mouthpiece contact piece 2 is formed with a notch 11 from one side on the base end side, and a quick-connecting piece portion 19 is formed through the notch 11. When the tip of the mouthpiece contact piece 2 is passed through the through hole 7 and the cover 13 is attached to the side wall 17, the bending step 18 is pressed against the outer surface of the bottom 6 by the tip of the pressing pin 14, and the side surface of the pressing pin 14 is quickly moved. The base end portion of the knot 19 is pressed and fixed to the support portion 16.

The central contact piece 3 penetrates the bottom portion 6 from the outside, is bent on the inner surface of the bottom portion 6 and extends parallel to the mouthpiece contact surface 21 of the mouthpiece contact piece 2. In the embodiment, it is formed in a shape substantially symmetrical to the base contact piece 2, and is inserted into the through hole 8 and bent on the inner surface of the bottom portion 6. Further, by attaching the cover 13 to the socket body 1, the bending step portion 18 of the center contact piece 3 is pressed against the outer surface of the bottom portion 6 by the tip end portion of the pressing pin 14, and the quick connecting piece 19 is attached by the side portion of the pressing pin 14. The base end portion is pressed and fixed on the support portion 16.

FIG. 7 shows a state in which the electric wire 47 is passed through the electric wire insertion hole 23 and is locked to the quick-connecting piece 19, which are simultaneously connected electrically and mechanically. 22 is an insulating wall. According to this embodiment, since the central contact piece 3 is bent on the inner surface of the bottom portion 6 so as to extend in parallel to the base contact surface 21 of the base contact piece 2, the center contact piece 3 is attached to the bottom portion of the socket body 1. It is possible to ensure a constant insulation distance between the base contact piece 2 and the center contact piece 3 irrespective of the variation in the bending position on 6.

Further, the socket body 1 has a mounting surface 5 on an outer surface parallel to the axial direction, and a pair of through holes 7 and 8 of the bottom portion 6 penetrating the base contact piece 2 and the center contact piece 3 are substantially inverted. Since the terminal portions of the base contact piece 2 and the center contact piece 3 are located on the side of the mounting surface 5 of the bottom portion 6 of the socket body 1 because they are formed on the side of the mounting surface 5 so as to form the shape of FIG. As shown in the figure, a half space 24 is formed on the side opposite to the mounting surface 5, so that the overall size can be reduced and the device can be mounted and used in a small space. In FIG. 8, 25 is a socket cover, 26 is an instrument body, 27 is a mounting screw, and 28 is a cover mounting screw. In this regard, in the conventional example shown in FIGS. 16 to 18, the through hole 88 of each contact piece in the cylinder of the socket body 83 parallel to the lamp center axis mounted on the mounting surface 86 is located on the center axis. However, it was difficult to reduce the size as described above.

Since the through holes 7 and 8 are formed in a substantially inverted C shape, the center contact piece 3 and the mouthpiece contact piece 2 are arranged in the H shape, so that the center contact piece 3 and the mouthpiece contact piece 2 are formed. This simplifies the wire quick connection structure of the terminal part and makes it cheap. Furthermore, since the clearance allowance 10 of the mouthpiece contact piece 3 is formed inside the mounting portion 11, it is not necessary to increase the wall thickness of the socket body 1. That is, in the conventional example, as shown in FIG. 16, the base contact piece 2 is flexibly contacted by screwing the lamp base, but the required clearance relief 87 is formed on the inner peripheral surface of the socket body 83. Therefore, the wall thickness of the cylindrical portion of the socket body 1 is increased.

Further, the base contact piece 2 and the center contact piece 3 are inserted into the through holes 7 and 8, and the cover 13 is attached, so that the base pin 2 of the cover 13 and the center contact piece 3 are pressed and fixed. Therefore, it is easy to assemble. A second embodiment of this invention is shown in FIGS. That is, in this screwed socket, in the first embodiment, the height of the side wall 17 is increased and the cover locking hole 29 is formed, and the flat plate-shaped cover 13 is locked by the cover locking hole 29. The claw 30 is formed, and the cover mounting hole 31 is further formed so that the claw 30 is mounted on the boss portion 48 formed on the socket body 1 with a screw (not shown). Further, a quick-connect terminal portion 32 and a quick-connect portion 33 for a capacitor are provided at the base ends of the base contact piece 2 and the center contact piece 3 via the bent step portion 18. In the quick-connect terminal portion 32, a terminal piece 34 continuous with the bent step portion 18 is bent in parallel with the mounting surface 5, and a rising piece 35 is formed on a side portion thereof, and an electric wire insertion hole 36 is formed in the rising piece 35. The locking piece 37 is folded back to the tip of the rising piece 35 via the folding part 38. The capacitor quick-connecting portion 33 is provided with a Z-shaped bent portion 39 at the front end portion of the terminal piece 34, and the locking piece 40 for the capacitor is cut and raised at the tip of the bent portion 39. The quick-connect terminal portion 32 and the capacitor quick-connect portion 33 are arranged so that their wire insertion directions are orthogonal to each other and that they do not abut each other when fast-connected.

In order to fix the base contact piece 2 and the center contact piece 3 to the socket body 1, the socket body 1 is provided with a support portion 46 for supporting the terminal piece 34, and a hook-shaped pressing portion 42 for pressing the folded portion 38 is provided. Along with the formation, the engaging groove 43 for pressing and fixing the tip of the bent portion 39 is formed, and by further attaching the cover 13 to the socket body 1, the inner edge of the cover 13 presses and fixes the tip edge of the terminal piece 34. To prevent it from being pulled out. As a result, even if a lamp base (not shown) hits the contact portion 21 and force is applied, the base contact piece 2 and the center contact piece 3 can be securely fixed without rattling, and an electric wire (not shown) can be attached to the electric wire. The electric wire is locked by being pushed into the locking piece 37 through the insertion hole 23 and the electric wire insertion hole 36. However, since the folded-back portion 38 is fixed by the pressing portion 42 at the time of locking, the locking is surely performed. it can. Further, the capacitor 44 is inserted into the empty space 24 of the socket body 1 from the upper end of the flat cover 13 and the lead 45 of the capacitor 44 is pushed into the locking piece 40 to lock the lead 45. At this time, since the tip of the bent portion 39 is locked in the locking groove 43, the lead 45 can be reliably fastened.

According to this embodiment, the capacitor 44 is housed by effectively utilizing the empty space 24 of the socket body 1, and the overall size can be reduced. Moreover, the base contact piece 2 and the center contact piece 3 can be fixed by inserting the contact portions 21 of the base contact piece 2 and the center contact piece 3 into the through holes 7 and 8 and attaching the cover 13 to the socket body 1. It's easy. Others are the same as those in the first embodiment.

[0017]

[Effect of the device]

 According to the screw socket of claim 1, since the central contact piece is bent on the inner surface of the bottom portion so as to extend parallel to the mouthpiece contact surface of the mouthpiece contact piece, the center contact piece is bent on the bottom portion of the socket body. There is an effect that the insulation distance between the base contact piece and the center contact piece can be kept constant regardless of the variation in the position.

According to a second aspect of the screwed socket of the present invention, in the first aspect, the socket body has an attachment surface on an outer surface parallel to the axial direction, and the socket body and the central contact piece penetrate through the socket body. Since the pair of through holes at the bottom are formed on the mounting surface side so as to form a substantially inverted V shape, the terminal portion of the base contact piece and the center contact piece is attached to the bottom of the socket body in addition to the effect of claim 1. Since it is located on the surface side, there is about half the empty space on the side opposite to the mounting surface, which allows the overall size to be reduced and it can be mounted and used in a small space on the equipment.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a bottom view thereof.

FIG. 4 is a sectional view of a terminal portion.

FIG. 5 is a partial cross-sectional view showing a mounting state of the base contact piece.

FIG. 6 is an exploded perspective view.

FIG. 7 is a cross-sectional view showing a wire connection state.

FIG. 8 is a side view showing a state of being attached to the instrument body.

FIG. 9 is a front view of the second embodiment.

FIG. 10 is a side view thereof.

FIG. 11 is a bottom view thereof.

FIG. 12 is a rear view.

FIG. 13 is a sectional view of a terminal portion.

FIG. 14 is an exploded perspective view.

FIG. 15 is a rear view with the cover and the contact piece removed.

FIG. 16 is a partial cross-sectional side view of a conventional example.

FIG. 17 is a front view.

FIG. 18 is a side view thereof.

[Explanation of symbols]

 1 Socket body 2 Base contact piece 3 Center contact piece 4 Female thread 6 Bottom 20 Inner peripheral surface 21 Base contact surface

Claims (2)

[Scope of utility model registration request] 1. A cylindrical socket body having a female thread portion and a bottom portion on an inner peripheral surface thereof, and a cap contact piece penetrating the bottom portion from the outside from the outside and arranged axially along the inner peripheral surface. And a central contact piece that penetrates the bottom portion from the outside and is bent on the inner surface of the bottom portion and extends parallel to the mouthpiece contact surface of the mouthpiece contact piece. 2. The socket body has a mounting surface on an outer side surface parallel to the axial direction, and a pair of through holes of the bottom portion penetrating the base contact piece and the center contact piece are formed into a substantially inverted V shape. The screw-in socket according to claim 1, wherein the socket is formed on the mounting surface side.