JP3237310U - Coaxial plug connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial plug connector which enables easy insertion and removal of a plug seat into a cylindrical portion of a connector and prevents disconnection from the plug seat due to a runout operation. SOLUTION: A spring member 3 housed in an inner circumference of a cylindrical portion 2 of a coaxial plug connector 1 is made of a horizontally long rectangular metal thin flat plate, and has a slit 31 having a predetermined width and a contact portion 32 along the lateral direction. It is configured by forming a plurality of and alternately and bending it into a cylindrical shape with strip-shaped portions formed at both ends in the vertical direction, and the contact portion is on the inner peripheral side of the cylinder shape rather than the strip-shaped portion. It is formed in a state of being recessed by a predetermined dimension, the contact surface with the plug seat 10 is made flat, the connection portion with the strip-shaped portion is made a gently inclined surface, and further, in the width direction of the contact portion. A reinforcing flange 32a was formed on at least one side surface. [Selection diagram] Fig. 2

Description

The present invention relates to a coaxial plug connector attached to the tip of a coaxial cable and connected to a connector seat such as a television terminal provided on a wall surface of a room or an input / output terminal provided in a receiving device such as a television. ..

As a coaxial plug connector attached to the tip of a coaxial cable, the plug seat is located on the inner circumference of a metal cylindrical portion which is a connection portion with a plug seat provided on a wall surface of a room or a receiving device such as a television. A spring member for elastically holding contact with a cable is disclosed (see, for example, Patent Documents 1 and 2).

In the connector disclosed in Patent Document 1, the spring member forms a plurality of slits at substantially equal intervals on a horizontally long rectangular metal flat plate, and all the portions between the slits are curved in an arc shape. The bulging portion is formed by forming a bulging portion, and then the entire bulging portion is bent into a cylindrical shape, whereby the bulging portion is configured to bulge inward in the cylindrical shape. Then, with the spring member housed in the inner circumference of the cylindrical portion of the connector, the plug seat is inserted into the cylindrical portion to elastically hold the plug seat.

Further, in the connector disclosed in Patent Document 2, the spring member forms a plurality of flat spring pieces by providing a cut groove in a rectangular metal flat plate, and the spring piece protrudes inward. It is configured by bending it into a state in which it is bent, and then bending the whole into a cylindrical shape. Then, with the spring member housed in the cylindrical portion of the connector, the plug seat is inserted into the cylindrical portion to elastically hold the plug seat.

Japanese Patent No. 6391786 Japanese Patent No. 3312130

However, in the connector described in Patent Document 1, since only the apex of the arc-shaped bulging portion provided on the spring member is in contact with the plug seat, it is vulnerable to vibration (swing). There is a problem that the connector is easily pulled out from the plug seat due to vibration (swing) or the like during the connection work.
Further, in the connector described in Patent Document 2, the spring piece of the spring member is flat and comes into contact with the plug seat on the surface, so that the spring piece can be held well, but the spring piece is Since it is bent inward in a cylindrical shape and protrudes, there is a problem that a force is required for insertion as a result of the connector seat colliding with the end of the spring piece when it is inserted into the cylindrical portion. rice field.

In view of the above-mentioned various problems, the present invention makes it possible to easily insert the plugging seat into the cylindrical portion of the connector and to satisfactorily prevent the connector from being pulled out from the plugging seat. The purpose is to provide a coaxial plug connector.

In order to solve the above-mentioned problems, the coaxial plug connector of the present invention is attached to the inner circumference of a metal cylindrical portion connected to a plug seat provided on a wall surface of a room or a receiving device such as a television. A cylindrical spring member that elastically contacts and holds the seat is housed, and the spring member is made of a horizontally long rectangular metal thin flat plate, and has a slit of a predetermined width and a contact portion along the lateral direction. It is configured by alternately forming a plurality of strips and bending them into a cylindrical shape with strips formed at both ends in the vertical direction. It is formed in a state of being recessed by the size, the contact surface with the plug seat is made flat, the connection portion with the band-shaped portion is made a gently inclined surface, and at least one in the width direction of the contact portion. It is characterized by forming a reinforcing flange on the side surface.

In the coaxial plug connector of the present invention, the contact portion of the spring member housed in the inner circumference of the cylindrical portion is formed in a flat shape, so that the contact portion is in surface contact with the plug seat inserted into the cylindrical portion. As a result, it is possible to satisfactorily prevent the connector from being pulled out due to the runout operation (swing).
Further, since the connecting portion between the contact portion and the strip-shaped portion has a gently inclined surface, the plugging seat can be easily inserted into the cylindrical portion without requiring a large force.
Further, since a reinforcing flange is formed on at least one side surface of the contact portion in the width direction, it is preferable that the contact portion is deformed by the force applied when the plug seat is inserted or the force accompanying the swinging motion. It is possible to reliably maintain the holding state of the plug seat.

It is a perspective view which shows the coaxial plug connector which concerns on this invention. It is sectional drawing which shows the main part of the coaxial plug connector which concerns on this invention in an enlarged manner. FIG. 2 is a cross-sectional view taken along the line AA of FIG. It is a perspective view which shows the state which the spring member was expanded. It is an enlarged sectional view of the main part of a spring member. It is an enlarged sectional view of the main part of a spring member. It is a perspective view which shows the state which the spring member is bent into a cylindrical shape. It is a perspective view which shows the state which reduced the diameter of a spring member.

Hereinafter, embodiments for carrying out the present invention will be specifically described with reference to FIGS. 1 to 8.
1 is a perspective view showing a coaxial plug connector according to the present invention, FIG. 2 is an enlarged sectional view showing a main part of the coaxial plug connector according to the present invention, and FIG. 3 is a sectional view taken along the line AA of FIG. be.
In FIGS. 1 to 3, reference numeral 1 denotes a coaxial plug connector (hereinafter, simply referred to as a connector) according to the present invention, which is attached to the tip of the coaxial cable C. At the tip of the connector 1, a plug seat 10 (see the two-dot chain line in FIGS. 2 and 3) such as a TV terminal provided on the wall surface of the room and an input / output terminal provided in a receiving device such as a TV. A metal cylindrical portion 2 to be connected is provided, and a cylindrical spring member 3 that elastically contacts and holds the plug seat 10 is housed in the inner circumference thereof. Reference numeral 4 is a contact pin connected to the central conductor of the coaxial cable C.

Hereinafter, the structure of the spring member 3 will be described with reference to FIGS. 4 to 7. FIG. 4 is a perspective view showing a state in which the spring member is unfolded, FIGS. 5 and 6 are enlarged cross-sectional views of a main part of the spring member, and FIG. 7 is a perspective view showing a state in which the spring member is bent into a cylindrical shape.
As shown in FIGS. 4 to 6, the spring member 3 is made of a horizontally long rectangular metal thin flat plate, and is formed by, for example, pressing. A plurality of slits 31 having a predetermined width and contact portions 32 are alternately formed in the spring member 3 along the lateral direction (longitudinal direction), and strip-shaped portions 33a and 33b are formed at both ends in the vertical direction. Has been done.
As shown in FIGS. 4 to 6, the contact portion 32 is formed in a state of being recessed by a predetermined dimension below the strip-shaped portions 33a and 33b (toward the inner peripheral side when the cylinder is curved). The contact surface with the plug seat 10 is flat, and the connection portions with the band-shaped portions 33a and 33b are gently inclined surfaces. Further, a reinforcing flange 32a is integrally formed on at least one side surface of the contact portion 32 in the width direction. The flange 32a may be divided into a plurality of pieces, or may be formed on both side surfaces of the contact portion 32 in the width direction.
Then, the spring member 3 configured as described above bends in a cylindrical shape as shown in FIG. 7. As a result, the contact portion 32 is in a state of protruding toward the inner peripheral side of the cylinder. Further, the spring member 3 is not a perfect cylinder, and a predetermined gap 34 is formed between the ends in the lateral direction (longitudinal direction).

Next, a case where the spring member 3 is housed in the cylindrical portion 2 of the connector 1 will be described. In this case, the spring member 3 is inserted into the cylindrical portion 2 in a state where the diameter is reduced as shown in FIG. 8 from the state shown in FIG. 7 by utilizing its elasticity. As shown in FIGS. It is stored in a state of being in contact with the inner peripheral surface of the portion 2. Further, after the spring member 3 is housed in the cylindrical portion 2 as described above, as shown in FIG. 2, the tip portion of the cylindrical portion 2 is slightly inserted (the insertion of the plug seat 10 is not hindered). By crimping inward (to some extent), the spring member 3 is prevented from being pulled out.

Next, the operation of the present invention will be described. When the plug seat 10 is inserted into the cylindrical portion 2 of the connector 1 in which the spring member 3 is housed in the inner circumference as described above, the plug seat 10 has a plurality of contact portions 32 protruding toward the inner circumference side of the spring member 3. Is held elastically by. At this time, since the end portion of the contact portion 32 has a gently inclined surface, the plug seat 10 can be easily inserted. Further, since the contact portion 32 is flat, it comes into contact with the plug seat 10 not at a point but at a surface, and as a result, it is possible to satisfactorily prevent disconnection due to swinging operation (swing). It will be possible. Further, since the reinforcing flange 32a is formed on at least one side surface of the contact portion 32 in the width direction, it is possible to prevent deformation due to force applied when the plug seat 10 is inserted and deformation due to runout operation. Therefore, the holding state of the plug seat 10 can be maintained satisfactorily.

1 Connector 2 Cylindrical part 3 Spring member 31 Slit 32 Contact part 32a Flange 33a, 33b Band-shaped part 4 Contact pin 10 Plug seat

Claims (1)

A cylindrical spring member that elastically contacts and holds the plug seat is housed in the inner circumference of the metal cylindrical part connected to the wall surface of the room or the plug seat provided in the receiving device such as a television. Coaxial plug connector
The spring member is made of a horizontally long rectangular metal thin flat plate, and a plurality of slits having a predetermined width and contact portions are alternately formed along the horizontal direction, and strip-shaped portions are formed at both ends in the vertical direction. It is composed by bending into a cylindrical shape.
The contact portion is formed in a state of being recessed by a predetermined dimension toward the inner peripheral side of the cylinder shape from the strip-shaped portion, the contact surface with the plug seat is made flat, and the connection portion with the strip-shaped portion is loosely formed. With a smooth slope
Further, a coaxial plug connector characterized in that a reinforcing flange is formed on at least one side surface in the width direction of the contact portion.

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