Bipolar magnetic latching relay

Patent metadata

Field	Value
Publication number	US-9899174-B2
Application number	US-201315036665-A
Country	US
Kind code	B2
Filing date	Nov 29, 2013
Priority date	Nov 15, 2013
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

The bipolar magnetic latching relay comprises a coil assembly, a magnetic steel assembly that contains a permanent magnet and armatures, as well as two contact devices that are mounted at both sides of a base, wherein the magnetic steel assembly is pivotally connected with the base through a revolving pair, the magnetic steel assembly swings between two positions under the driving of an electric signal of the coil assembly and is retained in one swing position due to the permanent magnetic force of the magnetic steel assembly, and the swing synchronously drives the two contact devices to deflect, such that two pairs of first movable contacts and static contacts are subjected to closing/disconnecting fit. The magnetic steel assembly is provided with two driving heads that synchronously rotate along with the magnetic steel assembly and extend to the outside from the same direction. The relay further comprises two guide transmission parts that connect the two contact devices and the magnetic steel assembly, wherein a guide mechanism by which each guide transmission part moves along the swing direction of the free end of the movable flat spring is provided between the guide transmission part and the base, a driven end of the guide transmission part is connected with a driving head through a driving connection structure, and a driving end of the guide transmission part is coupled to the free end of the movable flat spring through an elastic transmission structure, such that the two guide transmission parts are the same in movement direction and simultaneously act.

First claim

The invention claimed is:

1. A bipolar magnetic latching relay, comprising a coil assembly mounted inside a cavity formed by engaging a shell cover and a base, a magnetic steel assembly that contains a permanent magnet and armatures, and a first contact device and a second contact device that are mounted at both sides of the base, wherein the magnetic steel assembly is pivotally connected with the base through a revolving pair, the magnetic steel assembly swings between two positions under the driving of an electric signal of the coil assembly and is retained in one swing position due to the permanent magnetic force of the magnetic steel assembly, and the swing synchronously drives the first contact device and the second contact device to deflect, such that a first movable contact on a free end of a first movable flat spring of the first contact device and a first static contact flat spring are subjected to closed/disconnecting fit, and meanwhile a second movable contact of a free end of a second movable flat spring of the second contact device and a second static contact are subjected to closed/disconnecting fit, wherein:
the magnetic steel assembly is provided with a first driving head and a second driving head that rotate synchronously with the magnetic steel assembly, and both the first driving head and the second driving head extend to the outside from the same direction C of the magnetic steel assembly;
the bipolar magnetic latching relay further comprises a first guide transmission part and a second guide transmission part that connect the two contact devices and the magnetic steel assembly, a first guide mechanism by which the first guide transmission part moves along a swing direction of the free end of the first movable flat spring is provided between the first guide transmission part and the base, a driven end of the first guide transmission part is connected with the first driving head of the magnetic steel assembly through a first driving connection structure, a driving end of the first guide transmission part is coupled to the free end of the first movable flat spring of the first contact device through a first elastic transmission structure, and a second guide mechanism by which the second guide transmission part moves along a swing direction of the free end of the second movable flat spring is provided between the second guide transmission part and the base, the second driven end of the second guide transmission part is connected to the second driving head of the magnetic steel assembly through a second driving connection structure, and a driving end of the second guide transmission part is coupled to the free end of the second movable flat spring of the second contact device through a second elastic transmission structure, such that the first guide transmission part and the second guide transmission part are the same in movement direction and simultaneously act.

2. The bipolar magnetic latching relay according to claim 1 , wherein:
the first guide mechanism comprises a guide groove provided on the base and a first sliding block provided on the first guide transmission part, the first sliding block is mounted in the sliding groove and is in sliding fit with the guide groove, and the guiding direction of the guide groove is parallel to the swing direction of the free end of the first movable flat spring; and
the second guide mechanism comprises a guide groove provided on the base and a second sliding block provided on the second guide transmission part, the second sliding block is mounted in the guide groove and is in sliding fit with the guide groove, and the guiding direction of the guide groove is parallel to the swing direction of the free end of the second movable flat spring.

3. The bipolar magnetic latching relay according to claim 1 , wherein:
the first elastic transmission structure comprises a first guide sliding surface, a first disconnecting driving surface and a first closing driving surface that are provided on the driving end of the first guide transmission part, and a first guide end surface, a first disconnecting side surface and a first over-travel leaf spring that are provided on the free end of the first movable flat spring, wherein the first guide sliding surface is in sliding fit with the first guide end surface, the first disconnecting driving surface is in butt fit with the first disconnecting side surface, and the first closing driving surface is in butt fit with the first over-travel leaf spring; and
the second elastic transmission structure comprises a second guide sliding surface, a second disconnecting driving surface and a second closing driving surface that are provided on the driving end of the second guide transmission part, and a second guide end surface, a second disconnecting side surface and a second over-travel leaf spring that are provided on the free end of the second movable flat spring, wherein the second guide sliding surface is in sliding fit with the second guide end surface, the second disconnecting driving surface is in butt fit with the second disconnecting side surface, and the second closing driving surface is in butt fit with the second over-travel leaf spring.

4. The bipolar magnetic latching relay according to claim 1 , wherein:
the first elastic transmission structure comprises a first guide sliding rib, a first disconnecting driving surface and a first closing driving surface that are provided on the driving end of the first guide transmission part, and a first guide lug provided on the base, as well as a first disconnecting side surface and a first over-travel leaf spring that are provided on the free end of the first movable flat spring, wherein the first guide sliding rib is in sliding fit with the first guide lug, the first disconnecting driving surface is in butt fit with the first disconnecting side surface, and the first closing driving surface is in butt fit with the first over-travel leaf spring; and
the second elastic transmission structure comprises a second guide sliding rib, a second disconnecting driving surface and a second closing driving surface that are provided on the driving end of the second guide transmission part, and a second guide lug provided on the base, as well as a second disconnecting side surface and a second over-travel leaf spring that are provided on the free end of the second movable flat spring, wherein the second guide sliding rib is in sliding fit with the second guide lug, the second disconnecting driving surface is in butt fit with the second disconnecting side surface, and the second closing driving surface is in butt fit with the second over-travel leaf spring.

5. The bipolar magnetic latching relay according to claim 1 , wherein:
the first elastic transmission structure comprises a first disconnecting driving surface and a first closing driving surface that are provided on the driving end of the first guide transmission part, as well as a first disconnecting side surface and a first over-travel leaf spring that are provided on the free end of the first movable flat spring, wherein the first disconnecting driving surface is in butt fit with the first disconnecting side surface, and the first closing driving surface is in butt fit with the first over-travel leaf spring; and
the second elastic transmission structure comprises a second disconnecting driving surface and a second closing driving surface that are provided on the driving end of the second guide transmission part, as well as a second disconnecting side surface and a second over-travel leaf spring that are provided on the free end of the second movable flat spring, wherein the second disconnecting driving surface is in butt fit with the second disconnecting side surface, and the second closing driving surface is in butt fit with the second over-travel leaf sprin

Assignees

• Zhejiang Chint Electrics Co Ltd
• Chint Electronics Co Ltd

Inventors

• Zhang Minghui
• Liu Zhenxiang
• Xiao Tifeng

Classifications

• H01H51/2263 Primary

  comprising rotatable armature, rotating around central axis perpendicular to the main plane of the armature (H01H51/2227 takes precedence) · CPC title

• H01H50/58

  Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature · CPC title