JPH046141Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a connector with a switch, in particular,
This invention relates to a coaxial connector with a switch that can be applied to high frequency coaxial connectors, etc.

Conventional technology In electrical circuit equipment such as television monitors, connecting devices such as connectors are used at the input/output ends for connection with external equipment, but when no external connection is made, these input/output ends are It becomes open, and the signal from the internal circuit is reflected, adversely affecting the internal circuit. In order to minimize the reflection of this signal, it is necessary to connect a termination element between the input/output end and the ground to absorb the signal. Conventionally, various methods have been taken to meet this need, but the first example is:
When a normal connection connector is not fitted to the input/output end connector of the device, there is a method of fitting another terminator connector with a built-in termination element to that connector instead. There is a method of installing a termination circuit inside the device and switching between the connector and the termination circuit using a separate switch.
An example of this is the use of a connector with a built-in termination element and switch circuit. This third example of a connector is disclosed in Japanese Utility Model Application Publication No. 59-65482 and Japanese Utility Model Application Publication No. 59-76083.

Also, Utility Model Application No. 57-67383 and Utility Model Application No. 57-67383
As disclosed in Japanese Patent No. 119486, connectors with a switch are also known, and it is possible to use these connectors with a switch to satisfy the above-mentioned needs.

Problems to be Solved by the Invention The method of the first example described above requires a separate terminator connector, which increases the cost accordingly, and also requires that the terminator connector be mated in place of the normal connection connector. The operation was troublesome, and there were problems such as forgetting to fit the terminal connector instead.

The method of the second example described above also has the problem that a switch separate from the connecting device must be provided, and the structure of the connecting part becomes complicated and large, and its operation is also troublesome. are doing.

In the connector of the third example described above, both the switch circuit and the termination element are provided in one connector as a connecting device, so it is small and the switch circuit can be switched by the mating and uncoupling operations of the connector. Although it is easy to operate, it has the problem that it cannot be used in circuits that require more capability than the built-in termination element. Moreover, in these conventional connectors, the switch circuit is turned on and off by a contact that makes contact with and leaves only a predetermined point on a fixed center contact.
Therefore, during long-term use, the contact surfaces of these switches deteriorate due to corrosion, oxidation, etc., resulting in poor contact.

In addition, as mentioned above, if you use the connector with a switch disclosed in Japanese Utility Model Application No. 57-67383 or No. 57-119486, you can select and connect a termination element with the desired ability to the switch circuit. It is thought that these conventional connectors with a switch can be applied to various device circuits by the above-mentioned third example connector.
Since the switch is composed of a center contact that is fixed or moves, and a contact that comes into contact with only a predetermined point on the center contact and moves away from it, the contact surfaces of these switches may corrode, oxidize, etc. during long-term use. It will likely deteriorate and cause poor contact. Furthermore, in the configuration of these conventional connectors with a switch, the center contact can be moved as a whole during switching, so it is not possible to fix the center contact to a printed wiring board, etc. There were restrictions on circuit implementation that made it impossible.

An object of the present invention is to provide a coaxial connector with a switch that can solve the problems of the prior art as described above.

Means for Solving the Problems The coaxial connector with a switch according to the present invention is a cylindrical connector case that constitutes an outer conductor, and has a limiting protrusion on the inner circumferential surface of the front part of the connector case, and a coaxial connector with a switch. a movable insulator provided on the mating side of the case with the mating connector and having an outer peripheral protrusion so as to be moved in the axial direction by the mating force; a fixed insulator fixed to the fixed insulator, a fixed part of the center contact fixedly attached to the fixed insulator, and a movable insulator attached to the movable insulator and in electrical contact with the fixed part of the center contact. A movable portion of the center contact that can move with the body, a switch insulator portion provided around the movable portion of the center contact, and a switch contact protruding into the connector case to connect to the fixed insulator. a switch contact mounted thereon; and a deflecting means provided between the outer circumferential protrusion of the movable insulator and the fixed insulator, the shifting means being adapted to engage a mating connector. When the movable insulator is not in contact with the center contact, the movable insulator is axially displaced such that the outer circumferential protrusion abuts the limiting protrusion of the connector case, and the switch contact of the switch contact is brought into contact with the center contact. The movable portion of the switch is in contact with a peripheral portion other than the insulator portion of the switch, but when the mating connector is mated, the movable insulator is held in contact with the movable insulator by the mating portion of the mating connector. By being retracted in the axial direction against the deflection force, the switch contact of the switch contact is moved in sliding contact with the peripheral portion, and the switch contact of the switch contact is moved in a sliding contact state with the peripheral portion. It is arranged to come into contact with the switch insulator section.

Embodiments Next, the present invention will be described in more detail with regard to embodiments of the present invention based on FIGS. 1, 2, and 3 of the accompanying drawings.

Fig. 1 is a sectional view showing the structure of a high frequency coaxial connector with a switch, which is the premise of the embodiment of the present invention, and Fig. 2 shows a state in which a mating coaxial connector is fitted to the coaxial connector of Fig. 1. FIG.

As shown in FIG. 1, this high-frequency coaxial connector 100 with a switch includes a cylindrical shell 110 as a connector case constituting an external conductor, and a cylindrical shell 110 on the mating side of the mating connector. A movable insulator 120 provided to be moved in the mating direction by a mating force, a fixed insulator 130 fixed within the rear end of the cylindrical shell 110, and a movable insulator 130 attached to the movable insulator 120. Center contact 1 that can be moved together in the mating direction
40, a switch insulator section 150 provided around the center contact 140, a switch contact 160 attached to the fixed insulator 130 with a switch contact 161 protruding into the cylindrical shell 110, and a mating contact 160. When not mated with the side connector, the movable insulator 120 is shifted so that the switch contact 160 of the switch contact 160 is in contact with the peripheral part of the center contact 140 other than the switch insulator part 150. A spring 170 is provided as a deflecting means for the purpose.

The shell 110 is made of a conductive material, and has a locking protrusion 111 formed on the outer periphery on the mating side for locking the mating with the mating connector, and has a locking protrusion 111 on the outer periphery on the rear end side. A flange portion 112 is formed for attachment to a panel of equipment or the like.
Furthermore, a movable insulator 12 is provided on the inner periphery of the shell 110.
Limiting protrusion 1 for limiting the deviation of 0 toward the fitting side
13 is formed.

An outer circumferential protrusion 121 is formed on the outer periphery of the movable insulator 120, which contacts the limiting protrusion 113 of the shell 110 and receives one end of the spring 170. At the front end and center of the movable insulator 120,
Female contact portion 141 at the tip of center contact 140
An opening 122 is formed at the rear end of the movable insulator 120 to accommodate the switch contact 16.
Recess 123 for receiving switch contact 161 of 0
is formed.

In this structural example, the center contact 140 is integrally formed of a conductive material, and may be press-fitted or fixed to the movable insulator 120 by integral molding. The switch insulator portion 150 is preferably buried in a recess formed on the outer periphery of the intermediate portion of the center contact 140 so that the outer periphery thereof is on the same surface. And in this example structure,
The rear end of the center contact 140 is connected to the fixed insulator 1
30, and is movable through the shaft hole 131. However, the problem caused by this is solved in the structure of the embodiment of the present invention shown in FIG. 3, which will be described later.

In the structural example shown in FIGS. 1 and 2, the spring 170 is coil-shaped, and is provided between the outer peripheral protrusion 121 of the movable insulator 120 and the fixed insulator 130, as shown in the figure. The coiled spring 170 is disposed between the rear outer circumference of the movable insulator 120 and the inner circumference of the cylindrical shell 110 so as to surround the entire rear outer circumference of the movable insulator 120. A substantially uniform deflection force is applied to the entire circumference of the outer peripheral protrusion 121 of the body 120, and the outer peripheral protrusion 121 of the movable insulator 120 always moves in the direction in which it abuts the limiting protrusion 113 of the shell 110. , shifting the movable insulator 120.

The switch contact 160 is made of a conductive material with spring properties, and may be press-fitted into the fixed insulator 130 or fixed by integral molding.

In the coaxial connector 100 of this structural example, as shown in FIG. However, as shown in Figure 2, the mating coaxial connector 2
When mating with 00, the mating coaxial connector 200
The movable insulator 120 is pushed back by the insulator 201 which is the fitting part of the switch contact 160 against the deflection force of the spring 170, so that the switch contact 161 of the switch contact 160 slides onto the peripheral part of the center contact 140. In the dynamic contact state, the center contact 140 is moved and the switch contact 16
0 switch contact 161 is the switch insulator part 15
This leads to contact with 0. At this time, switch contact 16
1 and the center contact 140 is broken and the switch is turned off. Then, the male contact portion 202 of the center contact of the mating coaxial connector
is in electrical contact with the female contact portion 141, the outer shell 203 of the mating connector 200 is in electrical contact with the shell 110, and the mating connector 20
By engaging the locking protrusion 111 with the lock engagement opening 204 of 0, these coaxial connectors 100
and 200 are locked.

As described above, according to the structural examples shown in FIGS. 1 and 2, the switch contact 161 of the switch contact 160 moves around the movable portion 140 of the center contact each time the switch is turned on or off due to mating or separation of the connectors. Since it slides over the surface, the contact surface can be purified due to the self-cleaning effect of sliding, and therefore,
The electrical contact of the switch contacts can always be maintained in good condition. In addition, the coiled spring 17
0, the movable insulator 120 is given a biasing force that is substantially uniform over its entire circumference, so that when the switch is turned on and off, the moving parts of the movable insulator 120 and the center contact 140 are cylindrical. Since it moves smoothly in the axial direction without rattling inside the shaped connector case, there is no force applied to push the switch contact of the switch contact 160 outward, and the switch can be repeatedly turned on and off. Even when the switch contact 161 is not deformed, the contact force against the center contact 140 is always maintained uniformly. This is important in keeping the high frequency characteristics constant when used for high frequencies.

As mentioned above, in the structural examples shown in FIGS. 1 and 2, it is possible to obtain a self-cleaning effect of the switch contact, but since the entire center contact 140 moves during switching, the rear end of the center contact There are problems with circuit mounting, such as the inability to fix the part to a printed circuit board or the like. This invention solves these problems, and the third
This figure is a view similar to FIG. 1 showing a coaxial connector with a switch as an embodiment of the present invention. The coaxial connector of this embodiment is similar to that of FIG. 1 except that the center contact is divided into a fixed portion and a moving portion. Therefore, similar parts will be designated by the same reference numerals and their explanation will be omitted, and only different parts will be described in detail below. The center contact is a fixed part 1 fixed to a fixed insulator 130.
40A, and a movable portion 145A that moves while electrically contacting the fixed portion 140A. The movable portion 145A has a female contact portion 141 at its tip and is fixed to the movable insulator 120 so that it can move together with the movable insulator 120. In addition, the moving part 145A
A recess is formed on the outer periphery of the intermediate portion of the recess, and a switch insulator portion 150 is provided in the recess. Furthermore, the rear end of the movable portion 145A is a female contact portion 146, and this female contact portion 146 is capable of sliding contact around the female contact portion 142 at the tip of the fixed portion 140A. .

Although the present invention has been described with respect to a high frequency coaxial connector as an embodiment of the present invention, the present invention is not limited to this and can be applied to various types of coaxial connectors to obtain similar effects.

Effects of the Invention Since the coaxial connector with a switch of the present invention has the above-described structure, the switch contact 161 of the switch contact 160 becomes the moving part of the center contact each time the switch is turned on or off due to mating or separation of the connectors. 140, 145A, the contact surfaces can be cleaned due to the self-cleaning effect of sliding, and therefore the electrical contact of the switch contacts can always be maintained in good condition.

Furthermore, by using the coaxial connector with a switch of the present invention, it is possible to properly terminate any device circuit by connecting an arbitrary resistor between the switch contact 160 and the shell 110 outside the connector. Furthermore, since the terminator can be connected and disconnected only by fitting and separating the connectors, the operation is simple and it is suitable for miniaturization.

Furthermore, in the switching operation, only the movable portion 145A of the center contact moves and the fixed portion 140A is fixed to the fixed insulator 130 and does not move. The fixed portion 140A of the center contact can also be fixed to a printed wiring board, etc.
Another advantageous effect is that the number of wiring steps required for circuit mounting can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the structure of a high frequency coaxial connector with a switch, which is the premise of an embodiment of the present invention, and Fig. 2 is a sectional view showing a state in which a mating coaxial connector is fitted to the coaxial connector of Fig. 1. 3 are views similar to FIG. 1, showing a coaxial connector with a switch as an embodiment of the present invention. 100, 100A... High frequency coaxial connector with switch, 110... Cylindrical shell, 120... Movable insulator, 130... Fixed insulator, 140... Center contact, 140A... Fixed part, 141...
...Female contact part, 145A...Moving part, 150...
Switch insulator section, 160... switch contactor,
161...Switch contact, 170...Spring.

Claims (1)

[Scope of utility model registration request] A cylindrical connector case constituting the external conductor, which has a limiting protrusion on the inner circumferential surface of the front part, and a mating force on the mating side of the connector case with the mating connector. a movable insulator that is provided to be moved in the axial direction and has an outer peripheral protrusion; a fixed insulator that is fixed to the connector case rearward from the mating side; and a movable insulator that is attached to the fixed insulator. a fixed portion of the center contact that is fixed; a movable portion of the center contact that is attached to the movable insulator and is movable with the movable insulator while in electrical contact with the fixed portion of the center contact; a switch insulator section provided around the movable part of the contact, a switch contactor attached to the fixed insulator such that the switch contact protrudes into the connector case, and the outer peripheral protrusion of the movable insulator. and a shifting means provided between the movable insulator and the fixed insulator, and the shifting means moves the movable insulator toward the outer circumferential protrusion when the mating connector is not fitted. is shifted in the axial direction so as to come into contact with the limiting protrusion of the connector case, so that the switch contact of the switch contact comes into contact with a peripheral portion of the movable portion of the center contact other than the switch insulator portion. However, when the mating connector is mated, the movable insulator is moved back in the axial direction by the mating portion of the mating connector against the displacement force thereof. The switch contact of the switch contact is moved while in sliding contact with the peripheral portion, so that the switch contact of the switch contact comes into contact with the switch insulator portion. Coaxial connector with switch.