JPH09147997A - Fixing structure of movable contact piece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a movable contact piece in a small size, as well as to fix it stably. SOLUTION: At one end side of the leaf spring form movable contact 61 of a movable contact piece 60, a plate form base 67 is formed integral by bending about parallel to the bending direction of the movable contact 61. At both ends of the base 67, a plate form of fixing part 66 is formed integral by branching and projecting, and bending about in the same direction with the movable contact 61, and the fixing part 66 is fixed by fitting in a fitting hole formed to a housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, a PHS
The invention relates to a structure for fixing a movable contact piece having a leaf spring-shaped movable contact portion in a connector with a changeover switch or the like capable of switching a connection target of an electric / electronic circuit such as a transmission / reception circuit from an antenna to an inspection device.

[0002]

2. Description of the Related Art In a mobile phone or PHS, a connector with a changeover switch is interposed between a transmission / reception circuit and an antenna in order to inspect the transmission / reception circuit at the time of shipment.

A conventional connector with a changeover switch is shown in FIG.
As shown in FIG. 4, a vertically long tubular housing (insulator) 7 is provided, and inside the housing 7, a contact receiving portion (space) 8 is formed. In addition, a connection hole 9 is formed in the upper surface (front surface) of the housing 7 to which the central terminal 1 of the mating plug is connected so as to communicate with the contact housing portion 8 side. A cylindrical shell 10 connected to the ground side is fixed to the outer periphery of the housing 7, and the contact receiving portion 8 has
The fixed contact piece 11 connected to the antenna side and the movable contact piece 15 connected to the transmission / reception circuit side are mounted and fixed in a substantially parallel vertical arrangement.

The fixed contact piece 11 is formed by bending a linear plate material to integrally form a fixed contact portion 12 and a fixed portion 14. The fixed contact portion 12 is provided with a convex contact. ing. Then, the fixed contact portion 12 is arranged at substantially the center of the contact housing portion 8 and is fixed to the housing 7 via the fixing portion 14. The movable contact piece 15 is formed by bending a linear plate material to integrally form a plate spring-shaped movable contact portion 16 and a fixed portion 17.
Is vertically arranged from below (on the back surface side) the fixed contact portion 12 in the contact housing portion 8 to just below the connection hole 9, and is fixed to the housing 7 via the fixing portion 17.

Under normal circumstances, the elasticity of the leaf spring causes the movable contact portion 16 to come into contact with the fixed contact portion 12 to connect the transmission / reception circuit to the antenna side. On the other hand, at the time of inspection, when the central terminal 1 of the counterpart plug connected to the inspection device is inserted from the connection hole 9 on the upper surface of the housing 7, the movable contact portion 16 contacts the central terminal 1 and at the same time, the central terminal 1 It is pressed by and is bent in the lateral direction to separate from the fixed contact portion 12, and the connection target of the transmission / reception circuit is switched to the inspection device side.

[0006]

As described above, in order to bend the leaf spring-shaped movable contact portion 16 and separate it from the fixed contact portion 12, the movable contact piece 15 is bent against the bending of the movable contact portion 16. However, if the fixing portion 17 is enlarged for this purpose, the connector as a whole becomes large in size, and there is a problem that a large space is required when the connector is mounted on a mobile phone or the like.

The present invention has been made in view of such a conventional problem,
An object of the present invention is to provide a fixing structure for a movable contact piece that can stably fix the movable contact piece and can be downsized.

[0008]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
A plate-shaped base portion is integrally formed by bending the movable contact piece on one end side of the leaf spring-shaped movable contact portion substantially parallel to the bending direction of the movable contact portion, and is fixed to both sides of the base portion with a plate-shaped fixed portion. The part is branched and projected, bent in substantially the same direction as the movable contact part, and integrally formed, and the fixed part is fitted and fixed in a fitting hole formed in the housing.

A fixed contact piece having a plate-shaped fixed contact portion, a movable contact piece having a leaf spring-shaped movable contact portion, and a contact for accommodating the fixed contact portion and the movable contact portion in mutual contact. A housing having an accommodating portion, and a connection hole into which a counterpart terminal connected to the fixed contact portion or the movable contact portion is inserted, the housing being opened to communicate with the surface; and the movable contact when the counterpart terminal is inserted. It is suitable for a connector with a changeover switch whose portion bends and separates from the fixed contact portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
FIG. 13 will be described.

1 to 11 show a first embodiment of the present invention.
An example is shown. In the figure, 20 is a housing (insulator), 30 is an operation pin, 40 is a shell, 50 is a fixed contact piece, and 60 is a movable contact piece.

The housing 20 is integrally molded of synthetic resin, and is formed into a flat, substantially rectangular parallelepiped shape as shown in FIGS. 2 and 3, and has a contact receiving portion 21 (space) inside.
However, it is formed vertically long (longer substantially perpendicular to the inserting direction of the mating plug). Further, on the upper surface (front surface) of the housing 20, a connection hole 25 and an operation hole 26 are vertically opened (generally parallel to the inserting direction of the mating plug) and open to the contact receiving portion 21. In the operation hole 26, guide grooves 27, 27 are vertically provided.

Fitting grooves 22, 22 for fixedly supporting the fixed contact piece 50 are laterally recessed in the upper portion (front surface side) of the contact receiving portion 21 at one end side of the housing 20, and at the other end side. In this case, fitting grooves 23, 23 for fixedly supporting the movable contact piece 60 are laterally recessed in the upper part of the contact accommodation part 21, and further, fitting holes 24, 24 are provided in both end surfaces of the contact accommodation part 21 for contact accommodation. The holes are formed in parallel with the portion 21. Fitting grooves 29, 29 for fixing and supporting the shell 40 are vertically provided on both side surfaces of the housing 20.

The operation pin 30 is integrally formed of synthetic resin, and is formed in a substantially cylindrical shape corresponding to the operation hole 26 of the housing 20 as shown in FIG.
Corresponding to Nos. 7 and 27, guide portions 37 and 37 are provided so as to project vertically. Then, the operation hole 26 of the housing 20 is vertically slidably inserted, whereby the operation hole 2 is formed.
6 is closed. The upper end of the operation pin 30 is
The shell 40 projects outward from an operation hole 46 (described later), and the lower end portion projects from the operation hole 56 (described later) of the fixed contact piece 50 into the contact receiving portion 21 of the housing 20.

The shell 40 is integrally formed by bending a brass plate material. As shown in FIG. 5, a flat contact portion 41 is formed laterally, and the contact portion 41 is connected to the housing 20. A connection hole 45 and an operation hole 46 are opened corresponding to the hole 25 and the operation hole 26. In addition, the contact portion 41
Flat plate-shaped fixing portions 47, 47 are formed by bending downward in the vertical direction on both sides of the terminal portions. Under the fixing portions 47, 47, terminal portions 49, 4 connected to the ground side of a wiring board or the like are formed.
9 is formed by bending sideways. The shell 40 is fixedly supported by the housing 20 so that the fixing portions 47, 47 are fitted into the fitting grooves 29, 29 ... And the upper surface (front surface) of the housing 20 is covered with the contact portion 41.

The fixed contact piece 50 is integrally formed by bending a brass plate material. As shown in FIGS. 6 and 7, a flat plate-shaped fixed contact portion 51 is formed laterally, and the fixed contact portion 51 is formed. At the rear end (left end in the figure), a flat plate-shaped base 57 is provided.
Is formed by bending downward in the vertical direction. Both sides of the fixed contact portion 51 are fixed portions 52, 52.
Further, the fixed contact portion 51 has an operation hole 2 of the housing 20.
6, an operation hole 56 is opened, and a terminal portion 59 connected to the transmission / reception circuit side such as a wiring board is laterally bent at the lower end of the base portion 57.

The fixed contact piece 50 includes a fixed portion 52,
52 is fitted into the fitting grooves 22 and 22, and the fixed contact portion 51 is arranged in the upper portion (front surface side) in the contact housing portion 21,
The housing 20 is supported and fixed to the housing 20.
The connection hole 25 is closed by the fixed contact portion 51, and a part of the fixed contact portion 51 is exposed from the connection hole 25 to the outside.

The movable contact piece 60 is integrally formed by bending a brass plate material. As shown in FIGS. 8 and 9, a leaf spring-shaped movable contact portion 61 is formed laterally, and the movable contact portion 60 is formed in a horizontal direction. A leaf spring-shaped bent portion 63 is formed by bending upward in the vertical direction at the rear end (right end in the figure) of 61.
A flat plate-shaped fixed portion 65 is laterally bent to the side opposite to the movable contact portion 61 at the upper end of the. Further, a flat plate-shaped base portion 67 is formed at the rear end of the fixed portion 65 by being bent vertically downward (substantially parallel to the bending direction of the movable contact portion 61), and a flat plate-shaped fixed portion is formed on both sides of the base portion 67. 66, 66 are formed by branching laterally and projecting in the same direction as the movable contact 61. Further, an upward convex contact is provided near the center of the movable contact portion 61, and a terminal portion 69 connected to the antenna side such as a wiring board is formed by bending sideways at the lower end of the base portion 67. ing.

In the movable contact piece 60, the fixed portion 65 is fitted in the fitting grooves 23, 23, the fixed portions 66, 66 are fitted in the fitting holes 24, 24, and the movable contact portion 61 is fitted in the contact receiving portion 2.
1 is fixedly supported by the housing 20 so as to be inserted immediately below the fixed contact portion 51 (between the back surface side of the contact housing portion 21 and the fixed contact portion 51), and the convex contact point of the movable contact portion 61. Is contacted with the fixed contact portion 51 by the elasticity of the leaf spring so as to be conducted. Further, the tip of the movable contact portion 61 contacts the lower end of the operation pin 30, and pushes up the operation pin 30 so that the upper end thereof projects outward from the upper surface (front surface) of the housing 20.

In the connector with a changeover switch constructed in this manner, the lower surface (back surface) of the housing 20 is directed to the wiring board or the like, the terminal portions 49 of the shell 40 are connected to the ground side wiring, and the fixed contact piece 50 is connected. The terminal portion 59 is connected to the transmission / reception circuit side wiring, and the terminal portion 69 of the movable contact piece 60 is connected to the antenna side wiring to be mounted on a mobile phone or the like. By arranging 61 in a horizontal direction (substantially perpendicular to the inserting direction of the mating plug), the height is made lower (flattened) in the vertical direction.
The mounting space can be reduced.

Further, the connection hole 25 formed on the upper surface (front surface) of the housing 20 has a fixed contact portion 51 of the fixed contact piece 50.
The operating hole 26 is closed by the operating pin 30, so that the upper surface (front surface) of the housing 20 is closed.
Even if the side is exposed to the outside, it is possible to preferably prevent dust and the like from entering the contact receiving portion 21 of the housing 20, and prevent contact failure due to dust and the like.

On the other hand, the mating plug has a substantially cylindrical insulator 79 made of synthetic resin, as shown in FIG.
At the tip of the insulator 79, a brass pin-shaped center terminal 7 is provided.
1 and a cylindrical external terminal 75 made of brass are respectively springs 7.
It is provided so as to be capable of projecting and retracting in the vertical direction independently via 2,76. The center terminal 71 is connected to the center conductor (core wire) of the coaxial cable connected to the inspection device side, and the external terminal 75 is connected to the outer conductor (shield portion) of the coaxial cable.

To connect the mating plug described above to the connector with the changeover switch, the tip of the center terminal 71 is inserted into the connection hole 25 on the upper surface (front surface) of the housing 20, and the mating plug is changed over. Attach it to the connector. Then, as shown in FIG. 11, the tip of the center terminal 71 contacts the fixed contact portion 51 of the fixed contact piece 50, and the center terminal 71 and the fixed contact piece 50 are electrically connected. At the same time, the external terminal 75 comes into contact with the contact portion 41 of the shell 40 to bring the external terminal 75 and the shell 40 into conduction, and the operation pin 30 protruding outward is pushed down, whereby the movable contact piece 60 moves. The contact portion 61 is pressed and bent in the vertical direction to separate from the fixed contact portion 51 of the fixed contact piece 50,
The movable contact piece 60 and the fixed contact piece 50 are shut off from each other. Therefore, a transmitting / receiving circuit of a mobile phone or the like is normally connected to the antenna side via the fixed contact piece 50 and the movable contact piece 60, but at the time of inspection, the fixed contact piece 50 and the center terminal 71 are used.
Connected to the inspection device side.

In order to push down the operation pin 30 and bend the movable contact portion 61 as described above, the movable contact piece 60 is used.
It is necessary to stably support and fix, but as mentioned above,
In the movable contact piece 60, in addition to the fixed portion 65 continuous to the movable contact portion 61, fixed portions 66 branched from both sides of the base 67,
Since 66 is provided in the same direction as that of the movable contact portion 61, it is stably supported despite its small size. That is,
Since the movable contact piece 60 can be stably fixed and downsized, the connector with changeover switch can be downsized not only in the vertical direction but also in the horizontal direction, and the mounting space can be further reduced. .

12 and 13 show a second example of the embodiment of the present invention. In the figure, 120 is a housing (insulator), 140 is a shell, 150 is a fixed contact piece, 1
Reference numeral 60 is a movable contact piece.

The housing 120 and the shell 140 are not provided with operation holes, and the other parts are similar to the housing 20 and the shell 40 described above, respectively. In the fixed contact piece 150, the fixed contact portion 151 is formed to be short so as not to close the connection hole 25 on the upper surface (front surface) of the housing 120, and other portions are similar to the fixed contact piece 50 described above. There is. In addition, the movable contact piece 160 is
An upward convex contact is provided near the tip of the movable contact portion 161, and the other portions are similar to those of the movable contact piece 60 described above.

Since the connector with a changeover switch constructed in this manner has a reduced height (flattened) in the vertical direction, as in the first example, the mounting space can be reduced. The fixed contact piece 150 is connected to the antenna side, and the movable contact piece 160 is connected to the transmission / reception circuit side.

In order to connect the mating plug to the connector with changeover switch, the tip of the central conductor 71 is connected to the connecting hole 25 on the upper surface (front surface) of the housing 120.
Insert the plug into the connector and press the mating plug against the connector with changeover switch. Then, as shown in FIG. 13, the tip of the center terminal 71 comes into contact with the movable contact portion 161 of the movable contact piece 160 so that the center terminal 71 and the movable contact piece 160 are electrically connected, and further, the movable contact portion 161 is the center terminal. The movable contact piece 160 and the fixed contact piece 150 are pressed by 71 and bent in the vertical direction to separate from the fixed contact portion 151 of the fixed contact piece 150.
Is shut off. Therefore, since it is not necessary to provide the operation pin on the connector with the changeover switch, the connector with the changeover switch can be miniaturized not only in the vertical direction but also in the horizontal direction, and the mounting space can be further reduced.

The movable contact piece in the connector with a high-frequency changeover switch has been described when the coaxial cable connected to the inspection device is temporarily switched and connected when inspecting a transmission / reception circuit of a mobile phone or the like. It can also be used for earphone jacks and pin jacks.

[0030]

As described above, in the structure for fixing a movable contact piece according to the present invention, a plate-shaped base portion is provided on one end side of a leaf spring-shaped movable contact portion of the movable contact piece in a bending direction of the movable contact portion. The plate-shaped fixed parts are branched and projected on both sides of the base part and bent in substantially the same direction as the movable contact part to be integrally formed. By fitting the movable contact piece into the fitting hole and fixing it, the movable contact piece can be stably fixed to the bending of the movable contact portion and can be formed in a small size. Therefore, it is possible to reduce the mounting space by downsizing a connector with a changeover switch incorporating the movable contact piece.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of an embodiment of a structure for fixing a movable contact piece according to the present invention, the example being applied to a connector with a changeover switch.

2 is a cross-sectional view of the housing shown in FIG.

3 is a sectional view taken along the line AA in FIG.

FIG. 4 is a side view of the operation pin shown in FIG.

5 is a plan view of the shell shown in FIG. 1. FIG.

6 is a front view of the fixed contact piece shown in FIG. 1. FIG.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a front view of the movable contact piece shown in FIG.

FIG. 9 is a plan view of FIG.

FIG. 10 is a sectional view of a mating plug.

FIG. 11 is a cross-sectional view showing a usage state in FIG.

FIG. 12 is a cross-sectional view showing an example of an embodiment of a structure for fixing a movable contact piece according to the present invention, showing an application example to another connector with a changeover switch.

13 is a cross-sectional view showing a usage state in FIG.

FIG. 14 is a cross-sectional view showing an example of a structure for fixing a movable contact piece in a conventional connector with a changeover switch.

[Explanation of symbols]

 20 housing 21 contact receiving part 22 fitting groove 23 fitting groove 24 fitting hole 25 connection hole 26 operation hole 27 guide groove 29 fitting groove 30 operation pin 37 guide part 40 shell 41 contact part 45 connection hole 46 operation hole 47 fixing part 49 terminal part 50 fixed contact piece 51 fixed contact portion 52 fixed portion 56 operation hole 57 base portion 59 terminal portion 60 movable contact piece 61 movable contact portion 63 bent portion 65 fixed portion 66 fixed portion 67 base portion 69 terminal portion 71 center terminal 72 spring 75 external terminal 76 Spring 79 Insulator 120 Housing 140 Shell 150 Fixed contact piece 151 Fixed contact part 160 Movable contact piece 161 Movable contact part

Claims (2)

[Claims] 1. A plate-shaped base portion is integrally formed on one end side of a leaf spring-shaped movable contact portion of a movable contact piece by bending the movable contact portion substantially parallel to a bending direction of the movable contact portion, and is formed on both sides of the base portion. A plate-shaped fixed portion is branched and projected to be bent and formed integrally with the movable contact portion in substantially the same direction, and the fixed portion is fitted and fixed in a fitting hole formed in the housing. Fixed structure of movable contact piece. 2. A fixed contact piece having a plate-shaped fixed contact portion, a movable contact piece having a leaf spring-shaped movable contact portion, and a contact for accommodating the fixed contact portion and the movable contact portion in mutual contact. A housing having an accommodating portion, and a connection hole into which a counterpart terminal connected to the fixed contact portion or the movable contact portion is inserted, the housing being opened to communicate with the surface; and the movable contact when the counterpart terminal is inserted. 2. A connector with a changeover switch in which a part bends and separates from the fixed contact part.
The fixed structure of the movable contact piece described in.