JPH0850965A - Coaxial connector with switch - Google Patents

Abstract

PURPOSE:To block a leakage current owing to a capacity combining, by connecting an opening terminal to the earthing side when an outer connector is inserted, as to a coaxial connector to convert a signal an automobile telephone and the like to an outer signal and an inner signal by an outer coaxial connector. CONSTITUTION:An elastic armature 2 and an elastic contact 3 abutting to the armature 2 are provided opposing each other in a shell main body, an armature 4 for earthing with a D-cut form is fitted and connected to the shell main body making into an earthing side, and a movable pin 6 abutting to the elastic armature 4 for earthing is faced to an insert port at the opposite side of the shell main body. When an outer connector is inserted in the shell main body, the above movable pin 6 transfers, and makes the armature 4 for earthing abutted to the elastic armature 2 made into an opening terminal. Consequently, since the elastic armature at the opening terminal side is communicated to the shell main body through the armature for earthing, a leakage current of a high-frequency circuit can be blocked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a coaxial connector with a switch for switching signals between an external signal and an internal signal by attaching / detaching an external coaxial connector to / from a vehicle-mounted car telephone, a mobile telephone, a radio, etc. The movable pin and the grounding contact piece are arranged inside, and when the external connector is connected, this moving pin moves and the grounding contact piece is pressed against the open elastic contact piece.

[0002]

2. Description of the Related Art In a shell body, an elastic contact piece and an elastic contact that abuts on the elastic contact piece are arranged to face each other, and each is connected to a coaxial cable. When the external connector is inserted from the other side,
The center contact of the external connector pushes up the elastic contact. The connection between the elastic contact piece and the elastic contact is released, and only the center contact and the elastic contact are connected.

[0003]

In such a coaxial connector with a switch, the insulation distance between the elastic contact and the elastic contact piece is small, and both are capacitively coupled, and a high-frequency leakage current that is easy to transmit is originally required. Problems will occur due to interference with external signals. It is said that it is impossible to apply a connector to equipment that handles high frequencies such as a telephone. In order to prevent this leakage current, the present invention is to connect an elastic contact piece, which is an open terminal, to the ground side of the shell body.

[0004]

A fork-shaped elastic contact piece and an elastic contact abutting against the fork-shaped elastic contact piece are arranged in opposition to each other in a shell main body on the grounding side, and both blades of the elastic grounding contact piece punched into a D-cut are attached. A fixed piece is arranged, and the grounding contact piece is fitted and connected to the shell body so that the bases of both contacts pass through the D cut, and the movable pin whose tip abuts on the grounding contact piece is slidable. When the external connector is inserted, the movable pin pushes the grounding contact piece against the elastic contact piece side against its elasticity.

[0005]

Function: The bases of both contacts pass through the D-cut of the grounding contact piece, but since the fixed pieces of both wings of this grounding contact piece are firmly fitted to the shell body, both contacts are grounded. There is no danger of touching one side. As shown in Fig. 1, the elastic contact strongly abuts the elastic contact piece by its own elasticity,
The connection of both coaxial cables is guaranteed. When the external connector is inserted, the center contact lifts the elastic contact to break the connection between the elastic contact and the elastic contact piece, and only the center contact and the elastic contact are connected. An insulator is placed between the forks of the elastic contact piece,
The central contact running on this insulator never connects to the elastic contact. When this external connector is inserted, the cylindrical part moves the movable pin and the grounding contact piece that abuts against it against the elastic force of the grounding contact piece, and finally the grounding contact piece contacts the step part of the elastic contact piece. Contact them (Fig. 3). Leakage current induced in the elastic contact piece is absorbed by the shell body on the ground side through this ground contact piece, and interference between both contacts is prevented. When the external connector is taken out of the shell body, the movable pin integrated with the grounding contact piece is pushed back by the restoring force of the grounding contact piece, and the elastic contact piece is again connected only to the elastic contact.

[0006]

EXAMPLE A fork-shaped elastic contact piece 2 and an elastic contact 3 abutting against the fork-shaped elastic contact piece 2 are arranged in opposition to each other in a shell body 1 on the ground side, and fixed to both wings of an elastic ground contact piece 4 punched into a D cut. The piece 5 is bent, and the fixed pieces 5 of both wings are pressed to fit and connect in the shell body 1. The movable pin 6 slidably arranged in the shell body 1 , The elastic contact piece 2 is pressed in a direction away from the step portion 7 provided on the base portion. The shell body is made of brass or aluminum die casting. Since the fixed piece that conducts to the shell body firmly holds the elastic grounding contact piece 4 punched in the D-cut, the insulation state between both contacts passing through the D-cut is secured. The elastic contact piece and the elastic contact are connected to the coaxial cables 8 and 9 to reach each high-frequency circuit of the device. Reference numeral 10 is an insulator for insulatingly holding the elastic contact piece 2 and the elastic contact 3 from the shell body 1. Although it has been described that the fixing piece 5 of the grounding contact piece 4 is fixed in the shell body 1, in reality, the fixing piece 5 is fixed and held in the press-fitting cap integrated with the shell body 1. The movable pin 6 has a step so that the other end faces the external connector fitting space. The cylindrical portion 21 of the external connector 20 causes the movable pin 6 to move to the position shown in FIG. It can be contacted. In FIG. 4, reference numeral 22 is a center contact, and reference numeral 23 is a rubber damper for preventing loosening.

Since the fixed pieces of both blades of the grounding contact piece 4 punched out in the D-cut are held in the fitting hole of the shell body 1 with a pinching force, the grounding contact piece 4 itself has only the same direction as the movable pin. It cannot be transformed. The shape of the grounding contact piece 4 which constantly abuts on the movable pin 6 and gives a stable restoring force to push back the movable pin 6 is one of the features of the present invention. When the external connector 20 is pushed into the shell body 1, the movable pin 6 moves through the grounding contact piece 4 and comes into contact with the elastic contact piece 2 which is an open terminal so that this becomes the ground side. ， It is not limited to the moving direction of movable pin.

[0008]

In summary, according to the present invention, the elastic contact piece 2 and the elastic contact 3 that abuts on the elastic contact piece 2 are arranged to face each other in the shell body 1, and the movable pin 6 interlocking with the grounding contact piece 4 is slidably arranged. Then, when the external connector is inserted, the movable pin 4 is pushed in and the grounding contact piece 4 is brought into contact with the elastic contact piece 2, so that a leakage current due to capacitive coupling of high frequency signals can be prevented. Also,
Since the movable pin 6 is moved by the restoring force (elasticity) of the grounding contact piece 4, the switch mechanism can be formed with a small number of parts. Further, since the insulator is arranged between the fork-shaped tips of the elastic contact piece 2, the connecting / disconnecting operation when the center contact 22 is inserted is ensured, and the insulating distance between the elastic contact piece 2 and the elastic contact 3 is increased. Can be taken large.

[Brief description of drawings]

FIG. 1 is a sectional view of a shell body.

FIG. 2 is an explanatory diagram illustrating a positional relationship between an elastic contact piece, an elastic contact, and a ground contact piece.

FIG. 3 is a cross-sectional view when an external connector is inserted into the shell body.

FIG. 4 is a partially cutaway front view of an external connector.

[Explanation of symbols]

 1 Shell body 2 Elastic contact piece 3 Elastic contact 4 Grounding contact piece 5 Fixed piece 6 Moving pin 7 Step 20 External connector 21 Tube 22 Center contact

Claims (3)

[Claims] 1. A fork-shaped elastic contact piece (2) and an elastic contact (3) abutting against the fork-shaped elastic contact piece (2) are opposed to each other in a shell body on the ground side, and fixed to both wings of an elastic ground contact piece (4) punched into a D cut. Bend the piece 5 and fit and connect the grounding contact piece 4 to the shell body so that the bases of both contacts pass through the D-cut. A coaxial connector with a switch that is arranged slidably, and the movable pin 6 pushes the grounding contact piece 4 against the elastic contact piece side against the elasticity when the external connector is inserted. 2. A fork-shaped elastic contact piece and an elastic contact abutting against the fork-shaped elastic contact piece are arranged to face each other in a shell body on the ground side, and a fixing piece is folded on both wings of the elastic ground contact piece punched out in a D cut. Bending and pressing the fixed pieces of both wings to fit and connect in the shell body, the movable pin slidably arranged in the shell body was provided at the base of the elastic contact piece with this grounding contact piece. A coaxial connector with a switch that presses in the direction away from the step and when the movable pin moves with the insertion of the external connector cylinder, the grounding contact piece first contacts the elastic contact piece. 3. An elastic contact piece and an elastic contact that abuts against the elastic contact piece are arranged opposite to each other in the shell body, and a movable pin interlocking with the grounding contact piece is slidably arranged. A coaxial connector with a switch that pushes in and contacts the grounding contact with the elastic contact.