JP2575523Y2 - Screw socket - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a screw-in socket.

[0002]

2. Description of the Related Art A conventional example is shown in FIGS. That is, the screw-in socket is provided with a cylindrical socket main body 83 having a female thread portion 81 on the inner peripheral surface 80 and having a bottom portion 82, and is disposed in the axial direction along the inner peripheral surface 80 through the bottom portion 82. And a center contact piece 85 that penetrates through the bottom 82 so as to face the mouthpiece 84 and is bent upward on the inner surface of the bottom 82 so that the tip end approaches the mouthpiece 84.
And Reference numeral 86 denotes a mounting surface formed on the outer surface parallel to the axial direction, 87 denotes a deflection relief allowance of the base piece 84, 88
Are through holes for the base piece 84 and the center piece 85.

[0003]

However, this screw-in socket has a drawback that the insulation distance from the base contact piece 84 of a different polarity 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 which can keep the insulation distance between the base contact piece and the center contact piece constant.

[0004]

According to a first aspect of the present invention, there is provided a threaded socket having a female threaded portion on an inner peripheral surface and a bottom portion.
Wherein said bottom portion has a mounting surface on an outer surface parallel to the axial direction.
Has a pair of through-holes in a substantially inverted C shape on the mounting surface side.
A socket body which, and the base contact piece disposed axially along the inner peripheral surface through one of the through-hole from the outside, through the other of the through-hole from the outer inner surface of the bottom And a center contact piece bent upward and extending parallel to the base contact surface of the base contact piece.

[0005]

[0006]

According to the screw socket of the first aspect, the center contact piece is bent on the inner surface of the bottom so as to extend in parallel with the base contact surface of the base contact piece. The insulation distance between the base contact piece and the center contact piece can be kept constant irrespective of the variation in the bending position.
The socket body has a mounting surface on the outer surface parallel to the axial direction.
And a pair of through holes at the bottom that pass through the base piece and the center piece.
The through hole is formed on the mounting surface side so as to form a substantially inverted C shape
Terminal part of the base contact and the center contact
Located on the mounting surface side of the bottom of the
Half of the empty space is created, and as a result,
And can be installed and used in small spaces of instruments.
Wear.

[0007]

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this screw-in socket has a socket body 1, a base piece 2, and a center piece 3. The socket body 1 has a female thread 4 on an inner peripheral surface 20 and a cylindrical shape having a bottom 6. In the embodiment, the mounting surface 5
Are provided on the outer surface parallel to the axial direction, and a pair of through holes 7 and 8 of the bottom 6 penetrating the base piece 2 and the center piece 3 are formed in a substantially inverted C shape on the mounting surface 5 side. . The mounting surface 5 is formed on a mounting portion 11 protruding outward from the socket main body 1, and a bending relief allowance 10 formed on the inner peripheral surface of the socket main body 1 along the through hole 7 as shown in FIG. 11 is provided at a position inside. Therefore, it is not necessary to reduce the thickness of the cylindrical portion of the socket body 1. Further, the female screw portion 4 has a plurality of notches 9 in the axial direction. The outer surface side of the bottom 6 of the socket body 1 extends the terminal receiving portion 12 outward in the axial direction from the mounting surface 5 of the mounting portion 11. A side wall 17 is erected at the height, and an electric wire insertion hole 23 is formed in the side wall 17. A cover 13 is provided with a locking claw (not shown), a screw (not shown), or the like so as to cover a portion surrounded by the side wall 17 and the terminal receiving portion 12, but as shown in FIG. A pressing pin 14 is provided to press the bent step 18 in the middle of the piece 3 and the base piece 2. Fifteen
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 base contact piece 2 penetrates the bottom portion 6 from the outside and is disposed in the axial direction along the inner peripheral surface 20. In the embodiment, the position of the deflection relief allowance 10 penetrates the through hole 7. It is arranged in. The base piece 2 is formed of a band plate, and as shown in FIG.
8 is formed, the bending step 18 tip side boundary to form a die contact piece 2 of the die contact surface 21, and the notch 51 from one side to the base end portion side, quick binding strips through the incision 51 A portion 19 is formed. When the cover 13 is attached to the side wall 17 by passing the tip of the base piece 2 through the through hole 7, the holding pin 14
The bending step portion 18 is pressed against the outer surface of the bottom portion 6 at the tip end of the bottom portion 6, and the base end portion of the quick-coupling piece 19 is pressed and fixed to the support portion 16 by the side surface of the holding pin 14.

The center contact piece 3 penetrates the bottom 6 from the outside and is bent on the inner surface of the bottom 6 so that the base contact surface 2 of the base contact piece 2 is bent.
It extends parallel to 1. In the embodiment, it is formed in a substantially symmetrical shape with the base contact piece 2, inserted into the through hole 8, and bent on the inner surface of the bottom 6. Also, by attaching the cover 13 to the socket body 1, the center contact piece 3
Of the bent step 18 on the outer surface of the bottom 6, and the pressing pin 1
4, the base end of the quick-connecting piece 19 is pressed and fixed on the support 16.

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

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 a bottom portion 6 penetrating the base piece 2 and the center 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 mounting surface 5 side of the bottom portion 6 of the socket body 1 as shown in FIG. like,
A substantially half empty space 24 is formed on the side opposite to the mounting surface 5, so that it can be reduced in size as a whole and can be mounted and used in a small space of the instrument. 8, 25 is a socket cover, 26 is an instrument body, 27 is a mounting screw, 2
Reference numeral 8 denotes a cover mounting screw. In this regard, FIGS. 16 to 1
In the conventional example shown in FIG. 8, the through hole 88 of each contact piece in the cylinder of the socket body 83 parallel to the center axis of the lamp mounted on the mounting surface 86 is located at a position on the center axis line, and Conversion was difficult.

Since the through holes 7 and 8 are formed in a substantially inverted C shape, the center contact piece 3 and the base piece 2 are arranged in a C shape, so that the center piece 3 and the base piece 2 are formed. The structure for quick connection of electric wires at the terminal part is simplified and the cost can be reduced. Furthermore, since the clearance allowance 10 for the base piece 3 is formed inside the mounting portion 11, it is not necessary to increase the thickness of the socket body 1. That is, in the conventional example, as shown in FIG. 16, the base contact piece 2 makes a flexing contact by screwing in the lamp base. Therefore, the wall thickness of the cylindrical portion of the socket body 1 was increased.

Further, the base piece 2 and the center piece 3 are inserted into the through holes 7 and 8 and the cover 13 is attached, so that the base piece 2 and the center piece 3 are fixed by the holding pins 14 of the cover 13. It is easy to assemble. A second embodiment of the present invention is shown in FIGS. That is, in the screwed socket, the height of the side wall 17 is increased and the cover locking hole 29 is formed in the first embodiment, and the cover locking hole 29 is formed in the flat cover 13.
A locking claw 30 for locking the cover mounting hole 3
1 is formed and attached to a boss 48 formed on the socket body 1 by a screw (not shown). Further, a quick connection terminal portion 32 and a capacitor quick connection portion 33 are provided at the base end of the base contact piece 2 and the center contact piece 3 via the bent step portion 18. In the quick connection terminal portion 32, a terminal piece 34 continuous with the bending step portion 18 is bent in parallel with the mounting surface 5, a rising piece 35 is formed on the side thereof, and an electric wire insertion hole 36 is formed in the rising piece 35. A lock piece 37 is folded over the leading end of the rising piece 35 via a folded portion 38. Quick connection part 3 for condenser
3 is provided with a Z-shaped bent portion 39 at the tip of the terminal piece 34,
At the tip of the bent portion 39, a lock piece 40 for a capacitor is cut and raised. Quick connection terminal portion 32 and capacitor quick connection portion 33
Are shifted so that they do not hit each other when the wire insertion directions are orthogonal and are quickly connected.

In order to fix the base contact piece 2 and the center contact piece 3 to the socket body 1, terminal pieces 34 are attached to the socket body 1.
Is provided, a hook-shaped holding portion 42 for holding the folded portion 38 is formed, a locking groove 43 for holding and fixing the tip of the bent portion 39 is formed, and the cover 13 is further connected to the socket body 1. Cover 13
Of the terminal piece 34 is pressed and fixed on the inner surface of the terminal piece 34 to prevent it from being removed. Thus, even if a force is applied to the contact portion 21 by the lamp base (not shown), the base piece 2 and the center piece 3 can be securely fixed without rattling, and an electric wire (not shown) can be inserted into the electric wire insertion hole. 23 and electric wire insertion hole 36
The wire is locked by pushing the wire into the locking piece 37 through the through hole.
, The lock can be securely made. Further, the condenser 44 is inserted into the empty space 24 of the socket body 1 from the upper end of the flat cover 13,
The lead 45 is locked by pushing the lead 45 into the locking piece 40, but the tip of the bent portion 39 is locked in the locking groove 43 at the time of quick connection, so the quick connection of the lead 45 is ensured. Can be.

According to this embodiment, the capacitor 44 is housed by effectively utilizing the empty space 24 of the socket body 1, so that the overall size can be reduced. In addition, since the contact portions 21 of the base piece 2 and the center piece 3 are inserted into the through holes 7 and 8 and the cover 13 is attached to the socket body 1, the base piece 2 and the center piece 3 can be fixed. It is. Others are the same as the first embodiment.

[0017]

According to the screw socket of the first aspect,
The center contact piece is bent on the inner surface of the bottom so as to extend parallel to the base contact surface of the base contact piece, so that the center contact piece is bent with the base contact piece regardless of the variation in the bending position on the bottom of the socket body. A constant insulation distance from the center contact piece can be ensured. The socket body is mounted on the outer surface parallel to the axial direction
Surface and penetrate through the base piece and the center piece.
A pair of through holes are formed on the mounting surface side so as to form a substantially inverted C shape
Terminal parts of the base contact and the center contact
Is located on the mounting surface side of the bottom of the
About half the empty space is created on the side, so it is small as a whole
And can be used in a small space of equipment.
Can be.

[0018]

[Brief description of the 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 a base contact piece.

FIG. 6 is an exploded perspective view.

FIG. 7 is a cross-sectional view showing a connection state of electric wires.

FIG. 8 is a side view showing a state of attachment 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 in a state where a cover and a contact piece are 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]

 DESCRIPTION OF SYMBOLS 1 Socket main body 2 Base contact piece 3 Center contact piece 4 Female screw part 6 Bottom 20 Inner peripheral surface 21 Base contact surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 57-97395 (JP, U) JP-A 63-20386 (JP, U) JP-A 63-486 (JP, U) 500218 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) H01R 33/22

Claims (2)

(57) [Scope of request for utility model registration] 1. A cylindrical shape having a female screw portion on an inner peripheral surface and a bottom portion, and having a mounting surface on an outer surface parallel to an axial direction.
A pair of penetrations having a substantially inverted C shape on the mounting surface side of the bottom portion
A socket body having a hole, and the base contact piece disposed axially along the inner peripheral surface through one of the through-hole from the outside, through the other of the through-hole from the outside of the bottom A threaded socket having a center contact bent over an inner surface and extending parallel to a base contact surface of the base contact. 2. The socket body has a mounting surface on an outer surface parallel to the axial direction, and a pair of through holes in the bottom portion passing through the base contact piece and the center contact piece form a substantially inverted C shape. The screw-in socket according to claim 1, wherein the screw-in socket is formed on the mounting surface side.