Relay

• US 10,650,996 B2
• Filed: 10/03/2016
• Issued: 05/12/2020
• Est. Priority Date: 10/29/2015
• Status: Active Grant

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Hayashida, Kaori, Kozai, Yuji
• Primary Examiner(s): Ismail, Shawki S
• Assistant Examiner(s): Homza, Lisa N
• Application Number:
  US15/753,805
• Publication Number:
  US 20190013172A1
• Time in Patent Office: 1,317 Days
• Field of Search: 335 2
• CPC Class Codes: H01H 1/18 with subsequent sliding
• CPC Class Codes: H01H 1/50 Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
• CPC Class Codes: H01H 50/18 Movable parts of magnetic circuits, e.g. armature
• CPC Class Codes: H01H 50/56 Contact spring sets
• CPC Class Codes: H01H 50/58 Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
• CPC Class Codes: H01H 50/64 Driving arrangements between movable part of magnetic circuit and contact structurally associated with contact spring sets H01H50/58
• CPC Class Codes: H01H 50/641 intermediate part performing a rectilinear movement H01H50/645, H01H50/66 - H01H50/74 take precedence
• CPC Class Codes: H01H 51/2227 in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit H01H51/2209 takes precedence
• CPC Class Codes: H01H 9/38 Auxiliary contacts on to which the arc is transferred from the main contacts using arcing-horns H01H9/46

Abstract

At the time of contact between the contacts, the first movable contact comes into contact with the first fixed contact before contact between the second movable contact and the second fixed contact is made. The first movable contact is located on a leading end side of the contact piece with respect to the second movable contact. The first divided piece includes a body and a projection. The body extends in the lengthwise direction. The projection projects in the widthwise direction of the first divided piece from the body. The projection includes a contact portion pressed by the link member.

Claims

1. A relay comprising:

a movable contact terminal;

a contact piece that is attached to the movable contact terminal, and includes a first divided piece and a second divided piece extending in a lengthwise direction and divided from each other;

a first movable contact attached to the first divided piece;

a second movable contact attached to the second divided piece;

a fixed contact terminal disposed at a position facing the contact piece;

a first fixed contact attached to the fixed contact terminal and disposed at a position facing the first movable contact;

a second fixed contact attached to the fixed contact terminal and disposed at a position facing the second movable contact; and

a link member capable of pressing the contact piece, wherein

at a time of contact between the contacts, the first movable contact comes into contact with the first fixed contact before the second movable contact comes into contact with the second fixed contact,

the first movable contact is located on a leading end side of the contact piece with respect to the second movable contact,

the first divided piece includes

a body that extends in the lengthwise direction, and

a projection that projects in a widthwise direction of the first divided piece from the body, and

the projection includes a contact portion pressed by the link member.

2. The relay according to claim 1, wherein the contact portion is disposed at a position deviating in the widthwise direction from the first movable contact.

3. The relay according to claim 1, wherein the contact portion is located at a portion of the first divided piece on a leading end side with respect to at least a part of the first movable contact.

4. The relay according to claim 3, wherein the contact portion is provided at a leading end of the first divided piece.

5. The relay according to claim 1, wherein the second divided piece includes a recess provided at a position facing the projection.

6. The relay according to claim 1, further comprising a wall projected from a surface of the fixed contact terminal, and disposed between the first fixed contact and the second fixed contact.

7. The relay according to claim 6, wherein a height of the wall from the surface of the fixed contact terminal is larger than a height of the first fixed contact, or a height of the second fixed contact.

8. The relay according to claim 6, wherein the height of the wall is smaller than a distance between the contact piece and the fixed contact terminal in a state of contact between the first movable contact and the first fixed contact.

9. The relay according to claim 6, wherein the wall includes a curved portion curved in such a shape as to surround the second fixed contact.

10. The relay according to claim 9, wherein a virtual line that connects a center of the first fixed contact and a center of the second fixed contact overlaps with the curved portion as viewed in a direction perpendicular to the surface of the fixed contact terminal.

11. The relay according to claim 1, further comprising a wall projected from a surface of the contact piece, and disposed between the first movable contact and the second movable contact.

12. The relay according to claim 1, wherein a height of the first movable contact from the contact piece is larger than a height of the second movable contact from the contact piece.

13. The relay according to claim 1, wherein a height of the first fixed contact from the fixed contact terminal is larger than a height of the second fixed contact from the fixed contact terminal.