SWITCH DEVICE AND RUBBER CONTACT

• US 20190326077A1
• Filed: 04/18/2019
• Published: 10/24/2019
• Est. Priority Date: 04/20/2018
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Tokai RIKA Denki Seisakusho
• Original Assignee: Kabushiki Kaisha Tokai RIKA Denki Seisakusho
• Inventors: OGAWA, Sho
• Granted Patent: US 10,910,171 B2
• Time in Patent Office: Days
• CPC Class Codes: H01H 13/14 Operating parts, e.g. push-button
• CPC Class Codes: H01H 13/52 the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
• CPC Class Codes: H01H 13/82 characterised by contact space venting means
• CPC Class Codes: H01H 2205/022 Conductive rubber
• CPC Class Codes: H01H 2213/00 Venting
• CPC Class Codes: H01H 2213/014 Accumulator chamber
• CPC Class Codes: H01H 2227/022 Collapsable dome

Abstract

A switch device includes a substrate having at least one fixed contact and an inflow/outflow section provided with at least one through-hole, and a rubber contact to cover the substrate. The rubber contact includes at least one moving section disposed facing the respective at least one fixed contact, the moving section elastically deforming such that moving contacts corresponding to the respective fixed contacts are capable of contacting/separating, an in/out section disposed facing the inflow/outflow section and configured to form a space with the inflow/outflow section, a flow path section configured to form a flow path to connect the in/out section and the at least one moving section, and at least one chamber section having a space larger than a space occupying along representative length of the flow path section on a portion of the flow path section, and having strength such that a shape of the space is maintained.

Claims

1. A switch device, comprising:

a substrate having at least one fixed contact and an inflow/outflow section provided with at least one through-hole penetrating such that fluid passes through; and

a rubber contact configured to cover the substrate,

wherein the rubber contact comprises;

at least one moving section disposed facing the respective at least one fixed contact, the moving section elastically deforming such that moving contacts corresponding to the respective fixed contacts are capable of contacting/separating;

an in/out section disposed facing the inflow/outflow section and configured to form a space with the inflow/outflow section;

a flow path section configured to form a flow path configured to connect the in/out section and the at least one moving section; and

at least one chamber section having a space larger than a space occupying along representative length of the flow path section on a portion of the flow path section, and having strength such that a shape of the space is maintained.

2. The switch device according to claim 1, wherein the number of the at least one fixed contact is two or more,

wherein one of the moving sections is located at a rear end of a flow path in the flow path section, other moving sections among moving sections are located in a middle of a flow path in the flow path section, and

wherein the at least one chamber section is provided between the moving sections in the flow path section.

3. The switch device according to claim 1, wherein the chamber section is formed such that height of a space in the chamber section is larger than height of a flow path in the flow path section.

4. The switch device according to claim 3, wherein a shape of the space in the chamber section is a cube.

5. The switch device according to claim 3, wherein a shape of the space in the chamber section is a truncated cone.

8. The switch device according to claim 1, wherein the in/out section has none of the fixed contact and the moving contact.

9. The switch device according to claim 1, wherein the through-hole is electrically independent of a circuit on the substrate.

6. A rubber contact configured to cover a substrate having at least one fixed contact and an inflow/outflow section provided with at least one through-hole penetrating such that fluid passes through, the rubber contact comprising:

at least one moving section disposed facing the respective at least one fixed contact, the moving section elastically deforming such that moving contacts corresponding to the respective fixed contacts are capable of contacting/separating;

an in/out section disposed facing the inflow/outflow section and configured to form a space with the inflow/outflow section;

a flow path section configured to form a flow path configured to connect the in/out section and the at least one moving section; and

at least one chamber section having a space larger than a space occupying along representative length of the flow path section on a portion of the flow path section, and having strength such that a shape of the space is maintained.

7. The rubber contact according to claim 6, wherein the number of the at least one fixed contact is two or more,

wherein one of the moving sections is located at a rear end of a flow path in the flow path section, other moving sections among moving sections are located in a middle of a flow path in the flow path section, and

wherein the at least one chamber section is provided between the moving sections in the flow path section.

10. The rubber contact according to claim 6, wherein the in/out section has none of the fixed contact and the moving contact.

11. The rubber contact according to claim 6, wherein the through-hole is electrically independent of a circuit on the substrate.