JP3074150U - Coaxial plug seat - Google Patents

Abstract

(57) [Summary] [Problem] To maintain the initial function even if the connector plug is repeatedly inserted and removed at the time of connecting the connector plug in the coaxial plug seat to which the connector plug at the end of the coaxial cable is connected. Improve connection stability. SOLUTION: A center contact 3 is inserted and held in a center portion of a bush 11 made of an insulating member, and the bush 11 is covered so as to cover a rear end side of the held center contact 3.
The bush 11 and the cap 12 are connected by fitting a cap 12 made of an insulating member into the shell. In the mold plug seat 10, a retaining structure (1) for fixing the connection between the bush 11 and the cap 12 at a position where the bush 11 and the cap 12 are connected.
6, 17) are provided. Thereby, the initial function of the coaxial plug seat 10 can be maintained, and the stability of the connection can be improved.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a coaxial plug seat to which a connector plug which is a terminator of a coaxial cable connected to a communication device such as a TV antenna is connected, and in particular, even if the connector plug is connected and disconnected repeatedly. The present invention relates to a coaxial plug seat which can maintain initial functions and improve the stability of the connection.

[0002]

[Prior art]

 Generally, a coaxial connector seat is used as a terminal for receiving a signal transmitted from a connector plug which is a terminal of the coaxial cable. In this type of conventional coaxial plug seat 1, as shown in FIG. 4, a center contact 3 made of a conductive material is inserted and held in the center of a bush 2 made of an insulating member. A cap 4 made of an insulating material is fitted into the bush 2 so as to cover the rear end side, and the bush 2 and the cap 4 are connected. The connected bush 2 and the cap 4 are outside the chassis 5. It was press-fitted into the inside of the shell 6 provided in the first embodiment. The shell 6 had a substantially cylindrical shape, and was formed such that the inside diameter was large on the inlet side and small on the bottom side.

When a connector plug (not shown) is connected to the coaxial plug seat 1, a contact pin located at the center of the connector plug is inserted from an insertion port 7 provided at the rear end of the cap 4. Then, it came into contact with the contact pin contact portion 8 of the center contact 3 and received a signal transmitted from the connector plug.

[0004]

[Problems to be solved by the invention]

 However, in such a conventional coaxial plug seat 1, the bush 2 and the cap 4 pressed into the inside of the shell 6 are attached to the outer surface of the connecting portion 9 protruding from the rear end of the bush 2. 4 and the bush 2 is tightly fitted to the inner peripheral surface of the shell 6 inside the shell 6, so that the connector plug is When the plug 4 was repeatedly inserted into and removed from the mold plug seat 1, the cap 4 was gradually removed from the connecting portion 9 of the bush 2, and sometimes came out of the shell 6. Then, the center contact 3 similarly comes out of the shell 6, and the function of the coaxial plug seat may not be achieved.

On the other hand, the inner diameter of the shell 6 is formed such that the bottom side is large and the inlet side is small, so that the bush 2 and the cap 4 are firmly fitted to the inner peripheral surface of the shell 6. Accordingly, a method of preventing the cap 4 from coming off the bush 2 is also conceivable. However, it is difficult to manufacture such a shell due to the mold structure.

After the bush 2 in which the center contact 3 is inserted and held and the cap 4 are connected and press-fitted into the inside of the shell 6, a press-fit ring made of a separate member is press-fitted into the inlet of the shell 6. By doing so, a method of preventing the cap 4 from falling out of the shell 6 is also conceivable. However, since the number of parts increases, there is a problem that the processing steps and labor costs are extra.

Therefore, the present invention addresses such a problem and, for example, when a connector plug which is a terminal of a coaxial cable connected to a communication device such as a TV antenna is repeatedly connected and disconnected, An object of the present invention is to provide a coaxial plug seat that can maintain initial functions and improve the stability of the connection.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the coaxial plug seat according to the present invention inserts and holds a center contact in the center of a bush made of an insulating member and covers the rear end side of the held center contact. The bush and the cap are connected by fitting a cap made of an insulating member into the bush. In addition, a stopper structure for fixing the connection between the bush and the cap is provided at a portion where the bush and the cap are connected.

With such a configuration, the connection between the bush and the cap is fixed by the retaining structure provided at the portion where the bush and the cap are connected. This makes it possible to prevent the cap from coming off the bush that is firmly fitted to the inner peripheral surface of the shell.

[0010]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing an embodiment of a coaxial plug seat according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. The coaxial plug seat 10 is connected to a connector plug (not shown) at the end of a coaxial cable connected to a communication device such as a TV antenna, and transmits a signal transmitted from the connector plug to a television receiver. , VTR, and the like, and as shown in FIG. 2, it is composed of a bush 11, a center contact 3, a cap 12, and a shell 6.

The bush 11 holds the center contact 3 inside the shell 6 described below, and is made of an insulating member. As shown in FIG. 3, the bush 11 has a substantially circular shape substantially the same as the inner diameter of the shell 6. It is formed in a column shape. A square hole 13 for inserting and holding the center contact 3 is formed at the center, and a connecting portion 14 protruding along the square hole 13 is provided at the rear end side.

A center contact 3 is inserted and held in the center of the bush 11. The center contact 3 conducts a signal from a connector plug (not shown) to a semiconductor substrate (not shown) installed inside the chassis 5 and is made of a conductive material. As shown in FIG. It is provided with a contact pin contact portion 8 divided into two branches.

A cap 12 is fitted to the bush 11 and connected to the rear end of the center contact 3. The cap 12 covers the rear end of the center contact 3 and is made of an insulating material. As shown in FIG. 3, the rear end of the cap 6 has an outer diameter substantially equal to the inner diameter of the shell 6 and is closed. It has an insertion opening 7 for inserting a contact pin of a connector plug (not shown) at a center position of a rear end portion thereof.

The shell 6 press-fits the bush 11, the center contact 3, and the cap 12 therein, and accommodates the shell 6. The inner diameter of the shell 6 is formed such that the inlet side is large and the bottom side is small. , A connector plug not shown is connected. The outer peripheral surface of the shell 6 is provided with a screw thread 15 for preventing the connected connector plug from being easily detached.

Here, in the coaxial plug seat according to the present invention, as shown in FIG. 3, a retaining structure (16, 17) is provided at a portion where the bush 11 and the carrier 12 are connected. I have. In this retaining structure, the bush 11 and the cap 12 are connected by fitting an opening on the tip end side of the cap 12 into a connecting portion 14 provided at the rear end of the bush 11, and the bush 11 and the cap 12 are connected together. Is fixed. The connecting portion 14 provided at the rear end of the bush 11 is provided with a fixing locking portion 16 made of, for example, a projection, and the fixing locking portion 16 on the inner surface of the cap 12. At a position corresponding to the position, there is provided a locked portion 17 formed of, for example, a hole, which is engaged with and fixed to the fixing locking portion 16. In FIG. 3, as an example of the retaining structure, the locking portion 16 is a projection and the locked portion 17 is a hole, but the locking portion 16 may be realized by a shape other than that shown in FIG. . Further, the present invention is not limited to the above structure, and the locking portion 16 may be a hole and the locked portion 17 may be a projection.

Next, assembling of the coaxial connector seat configured as described above will be described. First, in FIG. 3, the center contact 3 is inserted into the square hole 13 at the center of the bush 11 from the front end, and is held in the square hole 13. Next, the cap 12 is fitted into the connecting portion 14 of the bush 11 so as to cover the rear end side of the held center contact 3. At this time, the locking portion 16 provided on the connecting portion 14 engages with the locked portion 17 provided on the inner surface of the cap 12, and the connection between the bush 11 and the cap 12 is established. Fixed to each other. Therefore, the cap 12 is not disengaged from the bush 11 even when the cap 12 is pulled with a force of 4.9 N which is about ten times the conventional force due to the engagement between the fixing locking portion 16 and the locked portion 17.

Then, the bush 11 and the cap 12, which are connected while holding the center contact 3, are pressed into the inside of the shell 6 provided outside the chassis 5. Since the shell 6 has the same shape as the conventional one, the bush 11 is firmly fitted to the inner peripheral surface of the shell 6 inside the shell 6 at this time. The tip of the center contact 3 is connected to a semiconductor substrate (not shown) installed inside the chassis 5.

[0018]

[Effect of the invention]

 Since the present invention is configured as described above, according to the first aspect of the present invention, the portion for connecting the bush and the cap is provided with a retaining structure for fixing the connection to each other. The cap can be prevented from coming off the bush firmly fitted to the inner peripheral surface of the shell. Therefore, even when the connector plug is connected to the coaxial plug seat according to the present invention repeatedly, the cap does not come out of the shell even if it is repeatedly inserted and removed, maintaining the initial function and improving the stability of the connection. can do.

In addition, conventional members can be used for the members other than the bush and the cap, and the initial function can be maintained without using special members other than the bush and the cap. Can be assembled in the same manner as before, and the manufacturing cost does not increase.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a coaxial plug seat according to the present invention.

FIG. 2 is a sectional view taken along line AA of the coaxial plug seat.

FIG. 3 is an exploded perspective view for explaining the assembly of the coaxial plug seat.

FIG. 4 is a cross-sectional view showing a conventional coaxial plug seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 ... Center contact 5 ... Chassis 6 ... Shell 7 ... Insertion opening 8 ... Contact pin contact part 10 ... Coaxial plug seat 11 ... Bushing 12 ... Cap 13 ... Square hole 14 ... Connecting part 15 ... Thread 16 ... Locking part 17 ... locked part

Claims (1)

[Utility model registration claims] 1. A bush made of an insulating member, wherein a center contact is inserted and held in a central portion thereof, and a cap made of an insulating member is fitted into the bush so as to cover a rear end portion of the held center contact. And a cap, and the connected bush and the cap are press-fitted into a shell provided on the outside of the chassis. A coaxial plug seat characterized by having a retaining structure for fixing the connection.