JPH0969374A - Socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the insertion of a terminal of an electric equipment with the weak force by providing a notch part in a socket main body on the side opposite to an extended piece of a contact having a flexible part. SOLUTION: At the time of inserting a terminal of an electric equipment from the end 23b side of a socket extended piece 23a so as to contact with a contact piece 23c, since a notch part 1c is provided in a main body on the opposite side of the extended piece 23c of the contact 2, in the case where a slide-contact position of the terminal and the contact piece 23c exists in the extended piece 23a side of a boundary 22a between a fixation part 22 and the extended part 23a, the extended piece 23a extended from the fixation part 22 of the main body 1 is bent to the other side of the boundary 22a so as to be housed in the notch part 1c. Since a contact piece 23c, which is formed by bending the end 23b of the extended piece 23a to one side like a V-shape, is bent to the same direction with the extended piece 23a, the spring effective length of the contact 2 is prolonged, and a spring constant is reduced, and the terminal of an electric equipment such as a battery can be inserted by the weak inserting force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket for connecting a terminal of an electric device such as a battery and a printed circuit board and used for a mobile phone or the like.

[0002]

2. Description of the Related Art With the miniaturization of electronic equipment, the size and height of a socket for connecting a terminal of an electric equipment such as a battery to a printed circuit board are reduced without sacrificing contact reliability. The demand is growing. For this reason, it is desirable that the contacts attached to the main body have a low profile, but if the contacts are simple cantilever springs, good spring characteristics cannot be obtained unless the contacts have a certain length, so a low profile is achieved. Can not. For this reason, a socket provided with a contact having a substantially V shape has been proposed.

As a conventional socket of this kind, there is a socket shown in FIG. This one comprises a main body 1, a contact 2 having an external connection portion 21 connected to the outside, a fixing portion 22 fixed to the main body 1, and a bending portion 23, and the bending portion 23 of the contact 2 includes the fixing portion 22. And an end piece 23b of the extension piece 23a bent to one side in a substantially V shape. When the terminal of the electric device is inserted into the socket and the contact portion 23d and the terminal are held in contact with each other, the extension piece 23a and the contact piece 23c, which are the bending portions 23 of the contact 2, are connected to the contact portion 23d. Has a contact pressure and bends to one side so that they can come into contact with each other.

[0004]

In the above-mentioned conventional socket, since the contact 2 having a substantially V-shape is used, the height can be reduced and the spring characteristic is good.

However, the end portion 23b of the extension piece 23a is
When the terminal of the electric device is slidably contacted with the contact piece 23c from the side and the contact portion 23d and the terminal are held in contact with each other, the closer the sliding contact position at the time of insertion is to the end portion 23b,
Since the effective spring length is short, the insertion force is strong and it is difficult to insert.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a socket which can be inserted with a weak insertion force when inserting a terminal of an electric device such as a battery. .

[0007]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a main body, an external connecting portion externally connected, a fixing portion fixed to the main body, and a terminal of an electric device are provided. A contact having a bending portion that bends so as to come into contact with the contact portion with a contact pressure; and the bending portion of the contact has an extension piece extended from the fixing portion and an end portion of the extension piece on one side. In a socket including a contact piece bent in a substantially V shape, the main body is configured such that a cutout portion is provided on the other side of the extension piece of the contact.

According to a second aspect of the present invention, in the first aspect of the present invention, the contact has a structure in which extension pieces in a bending direction of the contact piece extend to both sides of the contact portion. .

According to a third aspect of the present invention, in the first aspect of the present invention, the external connection portion is led out from the main body, and the fixing metal fitting fixed to the printed circuit board on the opposite side is the above-mentioned. The structure is provided on the main body.

According to a fourth aspect of the present invention, in the first aspect, the contact portion is located closer to the extension piece than the boundary between the fixing portion and the extension piece.

[0011]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. The members having substantially the same function are designated by the same reference numerals as in the conventional example.

Reference numeral 1 denotes a main body, which is made of an insulating resin in a substantially rectangular parallelepiped shape, and four accommodating spaces 1a opened on one side to accommodate contacts 2 described later are arranged in a row along the longitudinal direction. The bottom of the accommodation space 1a is the bottom surface 1b.
And a cutout portion 1c that is formed by cutting the bottom surface 1b further deeper and is inclined on the bottom surface. One fixing metal fitting 1d is provided on one side surface along the longitudinal direction.

The contact 2 is made of a conductive metal such as copper or a copper alloy, and an external connecting portion 21 and a fixing portion 22 formed in parallel with the external connecting portion 21 by bending in two steps.
And a bending portion 23 that bends when a terminal (not shown) of an electric device is inserted.

The bending portion 23 is a boundary 22a from the fixed portion 22.
Extension piece 23a extended via the
Contact piece 23 in which one end 23b is bent in a substantially V shape
The contact piece 23c has a contact portion 23d formed in a substantially arc shape at its tip end, and extended pieces 23e made of copper alloy or the like on both sides of the contact portion 23d.
Respectively extend in the bending direction of the contact pieces 23c.

The contact 2 is a housing space 1 of the main body 1.
When the fixing portion 22 is accommodated in a and the fixing portion 22 is fixed to the bottom surface 1b of the main body 1, between the main body 1 and the extension piece 23a of the contact 2,
That is, the cutout portion 1c is formed on the other side of the extension piece 23a opposite to the one side of the extension piece 23a formed by bending the contact piece 23c, and the external connection portion 21 and the fixing metal fitting 1d are formed on the main body. 1 will be derived on the opposite side. At this time, the contact portion 23d of the bending portion 23 is on the fixed portion 22 side with respect to the boundary 22a between the fixed portion 22 and the extension piece 23a.

When the external connection portion 21 and the fixing metal fitting 1d are soldered and fixed to the printed circuit board, and the terminals of the electric device such as a battery are inserted into the socket, the bending portion 23, that is, the extending piece 23a and the contact piece 23c. , The terminal of the electric device bends so as to have a contact pressure so as to come into contact with the contact portion 23d, and the current from the electric device causes the contact portion 23 of the terminal to contact.
It flows to the printed circuit board soldered to the external connection portion 21 through the d, the bending portion 23, the fixing portion 22, and the external connection portion 21.

In the socket of the first embodiment, when the terminal of the electric device is slidably inserted into the contact piece 23c from the end portion 23b side of the extension piece 23a, the contact 2 is formed.
Since the cutout portion 1c is provided in the main body on the other side of the extension piece 23a, the terminal and the contact piece 2 are inserted when the electric device is inserted.
When the sliding contact position with 3c is on the extension piece 23a side of the boundary 22a between the fixed portion 22 and the extension piece 23a, the main body 1
The extension piece 23a extended from the fixing portion 22 fixed to the above is bent toward the other side with the boundary 22a as a fulcrum so as to be accommodated in the cutout portion 1c, and the end portion 23b of the extension piece 23a is formed into a substantially V shape on one side. Since the bent contact piece 23c bends in the same direction as the extension piece 23a, the effective spring length of the contact 2 becomes long, and therefore the spring constant becomes small, and a weak insertion force is required when inserting a terminal of an electric device such as a battery. Can be inserted.

When the terminal is further inserted and the contact portion 23d and the terminal are held in contact with each other with a contact pressure due to the bending of the bending portion 23, the contact portion 23d is fixed to the fixing portion 22 and the extension piece 2.
Since the extension piece 23a is bent to one side rather than the other side with respect to the fixed portion 22 side of the boundary 22a with the 3a, the contact pressure between the terminal of the electric device and the contact portion 23d can be maintained as in the conventional case. .

Further, when the electric device such as the battery is pulled out from the socket, the extending pieces 23e are extended on both sides of the contact portion 23d of the contact 2 in the bending direction of the contact piece 23c. The contact piece 23c is not accidentally lifted from one side surface by a thin object such as a mechanical pencil and the contact 2 is not damaged.

Further, the main body 1 from which the external connection portion 21 is led out.
Since the fixing metal fitting 1d is provided on the main body 1 and is fixed to the printed circuit board on the opposite side of the main body 1, when the electric device is attached to the main body 1 from the end 23b side of the extension piece 23a or from the opposite side, the main body 1 Even if an external force is applied, since it is supported by the fixing metal fitting 1d on the opposite side, the external force such as bending stress does not act on the external connection part 21 solder-connected to the printed circuit board, and the external connection part 21 can be protected. .

Next, a second embodiment of the present invention will be described below with reference to FIG. In the second embodiment, the contact portion 23
The procedure is the same as that of the first embodiment, except that d is located closer to the extension piece 23a than the boundary 22a between the fixed portion 22 and the extension piece 23a.

In the socket of the second embodiment, the direction of the terminal of the electric device, that is, the extension piece 2
Even when inserted into the socket from the end 23b side of 3a, the side opposite to the end 23b, and the direction of the contact portion 23d which is a direction orthogonal to these, not only when inserting the terminal of the electric device but also with the contact portion 23d. Even when the extension piece 23a and the contact piece 23c are held in contact with the terminal, the extension piece 23a and the contact piece 23c are bent toward the other side of the extension piece 23a so as to be accommodated in the cutout portion 12, so that the terminal of the electric device is held in contact with the insertion side. The effective spring length of the contact 2 becomes longer, and the spring constant becomes smaller, so that the contact 2 is obtained which is hard to be deformed even if the bending allowance of the contact piece is increased or it is inserted and removed many times. We can provide a long-life socket.

In each of the first and second embodiments, the four contacts 2 are fixed in a row along the longitudinal direction of the main body 1. Accordingly, the number is not limited as long as the number is one or more, and it may be provided in any direction when there is a design limitation.

In each of the first and second embodiments, the extending pieces 23e are provided on both sides of the contact portion 23d.
Inadvertently touch the contact piece 23 with a thin object such as a mechanical pencil.
It may not be provided when there is no possibility of lifting c, and is not limited.

Further, in both the first and second embodiments, one fixing metal fitting 1d fixed to the printed circuit board is provided on the main body 1 on the side opposite to the drawn out external connection portion 21,
Fixing bracket 1 when external force is weak when mounting electrical equipment
There is no limitation that d may be provided, or two or more may be provided.

[0026]

According to the first aspect of the present invention, when the terminal of the electric device is slidably inserted into the contact piece from the end side of the extension piece, the notch portion is formed on the other side of the extension piece of the contact. When the electric device is inserted, when the sliding contact position between the terminal and the contact piece is on the extension piece side with respect to the boundary between the fixing portion and the extension piece, it extends from the fixing portion fixed to the main body. The extension piece bends to the other side with the boundary as a fulcrum so as to be accommodated in the cutout portion, and the contact piece in which the end portion of the extension piece is bent to one side in a substantially V shape bends in the same direction as the extension piece. As a result, the effective spring length of the contact becomes long, and therefore the spring constant becomes small, so that it is possible to insert with a weak insertion force when inserting the terminal of an electric device such as a battery.

When the terminal is further inserted and the contact portion and the terminal are held in contact with each other with a contact pressure due to the bending of the bending portion, the contact portion is closer to the fixing portion than the boundary between the fixing portion and the extension piece. In this state, the extension piece bends to one side instead of the other side, so that the contact pressure between the terminal of the electric device and the contact portion can be maintained as in the conventional case.

According to a second aspect of the present invention, in addition to the effect of the first aspect, when the electric device such as the battery is pulled out from the socket, the extension pieces are bent on both sides of the contact portion of the contact. Since each is extended in the direction,
The contact piece will not be accidentally lifted from one side surface of the extension piece by a thin object such as a mechanical pencil, and the contact will not be damaged.

According to a third aspect of the present invention, in addition to the effect of the first aspect, a fixing fitting is provided on the main body on the side opposite to the main body from which the external connection portion is drawn out, and is fixed to the printed circuit board. Therefore, when electrical equipment is attached to the main body from the end side of the extension piece or from the opposite side, even if external force acts on the main body, it is supported by the fixing metal fitting on the opposite side, so it is soldered to the printed circuit board. Further, external force such as bending stress does not act on the external connection portion, and the external connection portion can be protected.

According to a fourth aspect of the invention, in addition to the effect of the first aspect, the direction of the terminal of the electric device, that is, the end side of the extension piece, the side opposite to the end side, and the direction orthogonal to these directions. The extension piece and the contact piece are accommodated in the cutout portion not only when the terminal of the electric device is inserted but also when the contact portion and the terminal are held in contact with each other even when the contact piece is inserted into the socket from the direction of the contact portion side. As it is bent to the other side of the extension piece, the effective spring length of the contact becomes longer from the time when the terminal of the electric device is inserted until it is held in contact, and therefore the spring constant becomes smaller and the contact piece bends. A contact that is hard to deform even if the cost is increased or it is inserted and removed many times,
As a result, a long-life socket can be provided.

[Brief description of drawings]

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

FIG. 2 is a front view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a left side sectional view showing a second embodiment of the present invention.

FIG. 5 is a left side sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 1c Notch part 1d Fixing metal fitting 2 Contact 21 External connection part 22 Fixing part 22a Boundary between fixing part and extension piece 23 Flexible part 23a Extension piece 23b End part of extension piece 23c Contact piece 23d Contact part 23e Extension piece

Claims (4)

[Claims] 1. A contact having a main body, an external connection portion that is externally connected, a fixing portion that is fixed to the main body, and a bending portion that bends so that a terminal of an electric device can contact the contact portion with a contact pressure. The flexure portion of the contact is a socket including an extension piece extending from the fixing portion and a contact piece in which an end portion of the extension piece is bent to one side in a substantially V shape, wherein the main body is A socket characterized in that a notch is provided on the other side of the extension piece of the contact. 2. The socket according to claim 1, wherein the contact has extension pieces extending in a bending direction of the contact piece extending to both sides of the contact portion. 3. The external connection part is led out from the main body, and a fixing metal fitting fixed to a printed circuit board is provided on the opposite side of the main body. Socket. 4. The socket according to claim 1, wherein the contact portion is closer to the extension piece than a boundary between the fixing portion and the extension piece.