Electric contact switching device

Abstract

A high frequency R-F switch includes a switch body of housing made from a conductive material or a non-conductive resin having a conductive layer plated on the body surfaces. The switching device includes a first external connector, a first conductor having a switching contact member connected to the first external connector for switching a connection with the switch contact member. A conductive housing supports houses the first conductor, and connects to a second external connector and second conductor. The switch body or housing is in electrical connection with the second external conductor.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of disenergized deenergized, the blades 139 and 140 return to their original positions illustrated in FIG. 8.

Normally, the blade 140 contacts projections 149a and 149b formed in the base 110. When the coil 117 is energized, the blade 139 contacts projections 148a and 148b. The projections 148a, 148b, 148c, 149a, 149b and 149c have conductive layers extending to the terminals 147. Therefore, the blades 139 and 140 are prevented from making any unnecessary high-frequency short circuit among contact members 136, 137 and 138.

Alternatively, the blades 139 and 140 may be assembled in such a manner that normally the blade 139 contacts the projections 149c and 149a and the blade 140 contacts the members 137 and 138, while when the coil 117 is energized, the blade 139 contacts the members 136 and 137 and the blade 140 contacts the projections 148b and 148c. Thus, by changing the inserting position for the blades 139 and 140, the switching mode of this relay can be reversed.

Though the switching device in this embodiment is designed for a high-frequency switch of giga hertz order, it may be used as a d.c. or low-frequency switch. The switching device in this embodiment may be modified so that the respective cards 127 and 128 carry a plurality of blades so as to provide a switching device which switches a plurality of circuits.

Thus, according to this invention there is provided an electric contact switching device including a switching mechanism having inner conductors for switching a connecting circuit therewithin, a base member for supporting and housing the switching mechanism, and an outer conductor disposed on a predetermined portion of a surface of the base member. Since the outer conductor is plated on the fixed base member, the circuit design of the switching device is simplified. This is advantageous for a high-frequency circuit.

It will be understood from the foregoing description that this invention is applicable to another modified electric contact switching device. This invention may be applied to an electric contact switching device including a flat-shaped base member for supporting a switching mechanism having an inner conductor, a housing body which is mounted on or encloses the flat-shaped base member, and an outer conductor which is disposed on a predetermined surface of the base member and/or the housing body and connected to an external member disposed on the device.

It should be understood that the above description is merely illustrative of this invention and that many changes and modifications may be made by those skilled in the art without departing from the scope of the appended claims.

Claims

1. An electric contact switching device which confines R-F within said device comprising in combination:

first external connecting means;

dielectric means for supporting said first external connecting means;

first conductor means having a switching contact member connected to said first external connecting means for switching a first connection with said switching contact member;

housing means for supporting and housing said first conductor means, and said dielectric means wherein said housing is constructed from a material which is an electrically conductive resin;

second external connecting means;

second conductor means connected to said second external connecting means; and

said second conductor means being in electrical contact with said housing means.

2. An electric contact switching device according to claim 1, wherein said housing means consists of a molded base member supporting said first conductor means and a cover member covering said base member.

3. An electric contact switching device according to claim 1, wherein said first conductor means is a switching mechanism comprising a stationary contact member and a movable contact blade member, said second conductor means being disposed on a predetermined surface of said housing means so as to contact with said movable contact blade member in a break circuit position thereof.

4. An electric contact switching device according to claim 1 which further includes a conductive plate member, and in which said housing means includes a recessed portion for housing said first conductor means, said conductive plate member being mounted on said recessed portion and connected to said second conductor means.

5. An electric contact switching device according to claim 1, wherein said second external connecting means is a metal cylindrical member fixed to said housing means and connected with said second conductor means.

6. An electric contact switching device according to claim 1 further comprising electromagnet means housed within said housing means so as to actuate said first conductor means.

7. An electric contact switching device which confines said R-F within said device comprising in combination:

first external connecting means;

dielectric means for supporting said first external connecting means;

first conductor means having a switching contact member connected to said first external connecting means for switching a first connection with said switching contact member;

housing means for supporting and housing said first conductor means and said dielectric means, wherein said housing is constructed from an insulating material having a conductive material on the surfaces thereof;

second external connecting means; and

second conductor means connected to said second external connecting means; and

said second conductor means being in electrical contact with said conductive material plated on said housing means.

8. An electric contact switching device according to claim 7, wherein said housing means consists of a molded base member supporting said first conductor means and a cover member covering said base member.

9. An electric contact switching device according to claim 7, wherein said first conductor means is a switching mechanism comprising a stationary contact member and a movable contact blade member, said second conductor means being disposed on a predetermined surface of said housing means so as to contact with said movable contact blade member in a break circuit position thereof.

10. An electric contact switching device according to claim 7, which further includes a conductive plate member, and in which said housing means includes a recessed portion for housing said first conductor means, said conductive plate member being mounted on said recessed portion and connected to said second conductor means.

11. An electric contact switching device according to claim 7, wherein said second external connecting means is a metal cylindrical member fixed to said housing means and connected with said second conductor means.

12. An electric contact switching device according to claim 7, further comprising electromagnet means housed within said housing means so as to actuate said first conductor means.

13. An electric contact switch in accordance with claim 7, wherein said conductive material is applied by plating.

14. An electric contact switch in accordance with claim 13, wherein said conductive material is applied by coating.

15. An electric contact switching device comprising in combination a first external connecting means dielectric means for supporting said first connecting means;

first conductor mean having a switching contact member connected to said first external connecting means for switching a first conductor with said switching contact member;

housing means for supporting and housing said first conductor means, and said dielectric means wherein said housing is constructed from a resin and wherein said housing is covered by a metallic layer which reinforces said housing;

second external connecting means;

said conductor means connected to said exterior connector means; and

said second conductor means being in electric contact with said metallic layer which reinforces said housing.

16. An electric contact switching device in accordance with claim 15, wherein said metallic layer is plated onto said housing.

17. An electric contact switching device in accordance with claim 15, wherein said metallic layer is coated on to said housing.

18. An electric contact switching device in accordance with claim 15, further including a shield member mounted over a compartment which contains said switching contact member of said housing means.

19. An electric contact switching device in accordance with claim 18, further including a cover placed over said compartment and said shield for enclosing said compartment.

20. An electric contact switching device in accordance with claim 19, wherein said cover is metal plated and is used as a shielding member.

21. An electric contact switching device which confines R-F within said device, comprising in combination:

first external connecting means supported at a bottom portion of said device;

first conductor means having a switch contact member connected to said first external connecting means for switching a first connection with said switch contact member;

housing means for housing said first conductor means wherein said housing means is constructed from a material which is electrically conductive;

second external connecting means; and

second conductor means connected to said second external connecting means, wherein said second conductor means is in electrical contact with said housing and is contiguous with said housing means for shielding said R-F. 22. An electric contact switching device which confines R-F within said device, comprising in combination:

first external connecting means supported at a bottom portion of said device;

first conductor means having a switching contact member connected to said first external connecting means for switching a first connection with said switching contact member;

housing means for housing said first conductor means, wherein said housing means is constructed from an insulating material having an electrically conductive material provided thereon;

second external connecting means; and

second conductor means connected to said second external connecting means, wherein said second conductor means is in electrical contact with said conductive material of said housing means and is contiguous with said electrically conducting material on said housing means for shielding said

R-F. 23. An electric contact switching device which has a first external connecting means supported at a bottom portion of said device, comprising in combination:

first conductor means having a switching contact member connected to said first external connecting means for switching a first conductor with said switching contact member;

housing means for housing said first conductor means, wherein said housing means further comprises a metallic material which reinforces said housing means;

second external connecting means; and

second conductor means connected to said second external connecting means, wherein said second conductor means is in electrical contact with said metallic material which reinforces said housing means and is contiguous with said housing means for shielding said R-F. 24. The electric contact switching device according to claim 21, further comprising means for electrically isolating said first and second conductor means from one another. 25. The electric contact switching device according to claim 22, further comprising means for electrically isolating said first and second conductor means from one another. 26. The electric contact switching device according to claim 23, further comprising means for electrically isolating said first and second conductor means from one another.