CN107731626A

CN107731626A - The Direct Action Type relay of double-bridge structure

Info

Publication number: CN107731626A
Application number: CN201711077976.9A
Authority: CN
Inventors: 安吉鹏
Original assignee: Hella Xiamen Automotive Electronic Co Ltd
Current assignee: Hella Xiamen Automotive Electronic Co Ltd
Priority date: 2017-11-06
Filing date: 2017-11-06
Publication date: 2018-02-23
Also published as: CN109192622B; CN109192622A

Abstract

The invention discloses a kind of Direct Action Type relay of double-bridge structure, including terminal assemblies, axle assemble, magnetic circuit component；Described terminal assemblies are located at the top of axle assemble and relative with axle assemble and set, and the lower removable of axle assemble is nested with magnetic circuit component and can moved up and down；Described axle assemble includes four movable contacts, Shang Qiao, Xia Qiao, bridge bar, bridge spring, four movable contacts are riveted or are welded on respectively on Shang Qiao and lower bridge, Shang Qiao and lower bridge middle part are fixed on the top of bridge bar after overlapping, the lower end activity of bridge bar penetrates magnetic circuit component, and bridge spring is socketed in the bottom of bridge bar.Because axle assemble of the present invention is doube bridge direct dynamic structure, by the original voltage in contact both ends, divide two intersegmental gaps equally respectively, the voltage at contact both ends is reduced, reduces the energy of electric arc, the original electric current in contact both ends is divided equally on two bridges respectively, reduce the electric current for flowing through contact, the energy of electric arc is reduce further, the consumption of contact will substantially reduce, and improve relay life.

Description

The Direct Action Type relay of double-bridge structure

Technical field

The present invention relates to a kind of electromagnetic relay, more particularly to a kind of Direct Action Type relay of double-bridge structure.

Background technology

Power supply in automobile uses 12VDC, so existing relay loaded load voltage is mostly 12VDC.With garage The development of industry, increasing high-powered automobiles element are applied on automobile, and 12V battery pack has gradually met not The demands of these high-power components.Because 48V systems have the advantages of can carrying high-power components and reducing automobile fuel consumption, Have begun to progressively substitute original 12V systems to be applied on automobile.With 48V systematic differences, AUTOMOTIVE RELAY is specified negative Load has also brought up to 48VDC by original 12VDC, but existing AUTOMOTIVE RELAY does not switch so big rated voltage and electricity Stream.

Existing AUTOMOTIVE RELAY is generally made up of magnetic circuit system, contact system and accessory system.Figure 1A is a kind of typical AUTOMOTIVE RELAY structural representation.In general Direct Action Type AUTOMOTIVE RELAY includes magnetic circuit component 1 ', axle assemble 2 ', terminal assemblies 3’.Magnetic circuit component 1 ' includes coil block 11 ', U types yoke 12 ', flat yoke 13 ', dynamic iron core, static iron core, set；Axle assemble 2 ' Including bridge 21 ', movable contact 22 ', bridge spring, bar 23 '；Terminal assemblies 3 ' include terminal 31 ', stationary contact 32 '.By coil stimulating, Driving dynamic iron core drives what the contact with stationary contact 32 of movable contact 22 and disconnection realized relay to cut-off function.Contact is contacting When, as load voltage by 12VDC brings up to 48VDC, load voltage brings up to 200A, and existing AUTOMOTIVE RELAY can produce very Big heat, more than the thermal denaturation temperature of cavity material, so as to damage relay.Contact can produce electric arc when disconnecting, And voltage is bigger, electric current is bigger, and arc energy is stronger, existing AUTOMOTIVE RELAY, does not extinguish 48VDC, 200A when disconnection Electric arc caused by load, that is, the on-off function of relay is not realized, it is also possible to cause the burning or blast of relay.Have Relay adds magnet steel or seal cavity, considerably increases cost to improve arc extinguishing ability.

In order to solve problem above, the present invention gives birth to therefrom.

The content of the invention

It is an object of the invention to provide a kind of Direct Action Type relay of the double-bridge structure of service life length.

To achieve the above object, technical solution of the invention is：

The present invention is a kind of Direct Action Type relay of double-bridge structure, including terminal assemblies, axle assemble, magnetic circuit component；Described end Sub-component is located at the top of axle assemble and relative with axle assemble and set, and the lower removable of axle assemble is nested with magnetic circuit component and can Move up and down；Described axle assemble includes four movable contacts, Shang Qiao, Xia Qiao, bridge bar, bridge spring, two movable contact rivetings or welding On upper bridge, the riveting of two movable contacts or it is welded on lower bridge, the top of bridge bar, bridge is fixed on after being overlapped in the middle part of Shang Qiao and lower bridge The lower end activity of bar penetrates magnetic circuit component, and bridge spring is socketed in the bottom of bridge bar；Described Shang Qiao and lower bridge are connected in parallel on loop, point The electric current in loop is carried on a shoulder pole, four movable contacts are divided into two groups and formed individually with left and right two pairs of stationary contacts on terminal assemblies respectively Gap and by two groups of gap series on loop, share loop voltage.

The convex closure to raise up is provided with the middle part of described lower bridge, the convex closure is acted against on the bottom surface in the middle part of bridge.

It is doube bridge Direct Action Type because axle assemble of the present invention includes four movable contacts, Shang Qiao, lower bridge after such scheme Structure is simultaneously provided with convex closure on lower bridge, has advantages below：

1st, can be produced double in original gap in the case of identical armature travel；

2nd, by the original voltage in contact both ends, divide two intersegmental gaps equally respectively, reduce the voltage at contact both ends, reduce electric arc Energy；

3rd, by the original electric current in contact both ends, divide equally respectively on two bridges, reduce the electric current for flowing through contact, reduce further The energy of electric arc；

4th, in the case of identical turn-off time, generation is double to break speed in original contact

4 points of extinguishings for being advantageous to electric arc of the above, the consumption of contact will substantially reduce, and improve relay life.In addition, this When the dynamic iron core of invention drives the axle assemble to act upwards, a pair of movable contacts on a pair of movable contacts and lower bridge on upper bridge simultaneously and Two pairs of stationary contacts on terminal assemblies are contacted and compressed, and have convex closure on lower bridge, and bridge can swing around lower bridge convex closure in guarantee, So as to adjust, four groups of contacts are uneven caused by manufacturing with rigging error, help to realize that four groups of contacts can contact And compress.Now electric current is divided into two-way, reduces power consumption during contact closure, so as to reduce relay closed temperature.

The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.

Brief description of the drawings

Figure 1A is the structural representation for commonly using AUTOMOTIVE RELAY.

Fig. 1 is the axonometric drawing of the present invention；

Fig. 2 is the front view of the present invention；

Fig. 3 is sectional views of the Fig. 2 along line A-A；

Fig. 4 is three-dimensional exploded view of the present invention；

Fig. 5 is the three-dimensional exploded view of axle assemble of the present invention；

Fig. 6 is the axonometric drawing of lower bridge in axle assemble of the present invention.

Embodiment

As Figure 1-Figure 4, the present invention is a kind of Direct Action Type relay of double-bridge structure, including terminal assemblies 1, axle assemble 2nd, magnetic circuit component 3.

Described terminal assemblies 1 are located at the top of axle assemble 2 and relative with axle assemble and set, the lower removable of axle assemble 2 It is nested with magnetic circuit component 3 and can moves up and down.

Described magnetic circuit component 3 includes static iron core 31, coil block 32, flat yoke 33, U yokes 34, dynamic iron core 35.It is described The activity of dynamic iron core 35 be nested with the mesopore of static iron core 31.

As Figure 4-Figure 6, described axle assemble 2 includes four movable contacts 21,22,23,24, upper bridge 25, lower bridge 26, bridge Bar 27, bridge spring 28.Two rivetings of movable contact 21,22 are welded on bridge 25, and two movable contacts 23,24 are riveted or are welded on down On bridge 26, the top by being fixed on bridge bar 27 after snap ring 29, the lower end activity of bridge bar 27 are overlapped in the middle part of upper bridge 25 and lower bridge 26 Penetrate in magnetic circuit component 3 and leaned by snap ring 210 and the top of static iron core 31 in magnetic circuit component 3, bridge spring 28 is socketed in bridge bar 27 bottom and in the magnetic circuit component 3；Described upper bridge 25 and lower bridge 26 are connected in parallel on loop, share the electric current in loop, and four Individual movable contact 21,22,23,24 points be two groups and form respectively with left and right two pairs of stationary contacts 11,12 on terminal assemblies 1 independent Gap and by two groups of gap series on loop, share loop voltage.

The described middle part of lower bridge 26 is provided with the convex closure 261 to raise up, and the convex closure 261 acts against the bottom surface at the middle part of bridge 25 On, the convex closure 261 ensure that bridge 25 can swing around the lower convex closure 261 of bridge 26.

The operation principle of the present invention：

When dynamic iron core 35 drives 2 downward actuation of axle assemble, a pair on a pair of movable contacts 21,22 and lower bridge 26 on upper bridge 25 are dynamic Two pair stationary contacts separation of the contact 23,24 simultaneously and on terminal assemblies 1, while two intersegmental gaps are produced, four electric arcs break circuit Open.Because electric arc quantity from two is changed into four, then single arc energy reduces, and electric arc can extinguish rapidly, improve relay The arc extinguishing ability of device.

The emphasis of the present invention is that：Movable contact is formed by four.

It is described above, only present pre-ferred embodiments, the structure type of Shang Qiao and lower bridge can have it is a variety of, therefore can not The scope of the invention implemented is limited with this, i.e., the equivalence changes made according to scope of the present invention patent and description are with repairing Decorations, all should still be remained within the scope of the patent.

Claims

1. a kind of Direct Action Type relay of double-bridge structure, including terminal assemblies, axle assemble, magnetic circuit component；Described terminal assemblies It is positioned at the top of axle assemble and relative with axle assemble and set, the lower removable of axle assemble be nested with magnetic circuit component and can on move down It is dynamic；It is characterized in that：Described axle assemble includes four movable contacts, Shang Qiao, Xia Qiao, bridge bar, bridge spring, the riveting of two movable contacts or It is welded on bridge, the riveting of two movable contacts or is welded on lower bridge, the top of bridge bar is fixed on after being overlapped in the middle part of Shang Qiao and lower bridge End, the lower end activity of bridge bar penetrate magnetic circuit component, and bridge spring is socketed in the bottom of bridge bar；Described Shang Qiao and lower bridge are connected in parallel on loop On, share the electric current in loop, four movable contacts are divided into two groups and formed respectively with left and right two pairs of stationary contacts on terminal assemblies single Only gap and by two groups of gap series on loop, share loop voltage.

2. the Direct Action Type relay of double-bridge structure according to claim 1, it is characterised in that：It is provided with the middle part of described lower bridge The convex closure to raise up, the convex closure are acted against on the bottom surface in the middle part of bridge.