Electromagnetic relay

• US 9,202,653 B2
• Filed: 12/06/2013
• Issued: 12/01/2015
• Est. Priority Date: 02/27/2013
• Status: Expired due to Fees

• Current Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Original Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Inventors: Sakai, Natsumi, Kaneko, Masahiro, Yatsu, Nobuo, Uchiyama, Takuya, Takahashi, Kohei, Koshimura, Katsuaki
• Primary Examiner(s): Ismail, Shawki S
• Assistant Examiner(s): HOMZA, LISA NHUNG
• Application Number:
  US14/099,161
• Publication Number:
  US 20140240065A1
• Time in Patent Office: 725 Days
• Field of Search: 335/78
• US Class Current: 1/1
• CPC Class Codes: H01H 2205/002 fixed to operating part
• CPC Class Codes: H01H 50/026 Details concerning isolation between driving and switching circuit
• CPC Class Codes: H01H 50/047 Details concerning mounting a relays
• 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 50/60 moving contact being rigidly combined with movable part of magnetic circuit for polarised relays H01H51/2254, H01H51/2281
• CPC Class Codes: H01H 50/642 intermediate part being generally a slide plate, e.g. a card
• CPC Class Codes: H01H 50/647 intermediate part comprising interlocking means for different contact pairs H01H50/66 - H01H50/74 take precedence; for two separate relays H01H50/323; for ratchets H01H51/08
• CPC Class Codes: H01H 51/06 Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity

Abstract

An electromagnetic relay which is provided with an armature, a moving electrode which has a moving plate and a moving contact and a fixed electrode which faces the moving electrode and has a fixed plate and a fixed contact. At least a portion of the moving plate onto which the moving contact is arranged and at least a portion of the fixed plate onto which the fixed contact is arranged are inclined in width direction.

Claims

1. An electromagnetic relay comprising:

an electromagnet;

an armature which is pulled by said electromagnet when said electromagnet is energized;

a moving electrode having

a moving plate having a first longitudinal end fixed in place and a second longitudinal end movable by the operation of said armature, the second longitudinal end being opposite to the first longitudinal end in a longitudinal direction along a longitudinal axis of the moving electrode, and

a moving contact disposed on the moving plate, said moving contact being moved by the operation of said armature; and

a fixed electrode which faces said moving electrode and has a fixed plate and a fixed contact,

wherein at least a portion of said moving plate and at least a portion of said fixed plate onto which said fixed contact is arranged are inclined in a moving plate width direction, perpendicular to the longitudinal axis of the moving plate.

2. The electromagnetic relay as set forth in claim 1, further comprising a moving member which is connected to said armature and which moves along with operation of said armature, wherein

said moving plate and said fixed plate are inclined with respect to a movement direction of said moving member.

3. The electromagnetic relay as set forth in claim 2, wherein

said moving member has a pushing part which pushes said moving plate, and

said pushing part has a shape with an end face which contacts said moving plate becoming substantially parallel to a surface of said moving plate.

4. The electromagnetic relay as set forth in claim 2, wherein the moving plate moves by a pushing action in which the moving member pushes the moving plate.

5. The electromagnetic relay as set forth in claim 2, wherein the movement direction of said moving member is along a longitudinal direction of the said moving member.

6. The electromagnetic relay as set forth in claim 1, further comprising a case which has said electromagnet placed inside it, wherein

said moving plate and said fixed plate are inclined with respect to at least one outer surface of said case.

7. The electromagnetic relay as set forth in claim 1, wherein

said moving plate and said fixed plate are inclined with respect to a direction in which said armature is pulled by said electromagnet.

8. An electromagnetic relay comprising:

an electromagnet;

an armature that moves in accordance with excitation of said electromagnet;

a moving electrode including a moving plate and a moving contact disposed on the moving plate;

a fixed electrode including a fixed plate, and a fixed contact disposed on the fixed plate, the fixed contact configured to come into contact with the moving contact; and

a card fixed to the armature, moving with the armature, and including a pushing part at an end of the card, the pushing part contacting and pushing the moving electrode upon movement of the armature, the pushing part being inclined with respect to a movement direction of the card, and the pushing part being substantially parallel to at least a portion of said moving plate and to at least a portion of said fixed plate.