CN109192622A

CN109192622A - The Direct Action Type relay of double-bridge structure

Info

Publication number: CN109192622A
Application number: CN201811108605.7A
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: 2018-09-21
Publication date: 2019-01-11
Anticipated expiration: 2038-09-21
Also published as: CN107731626A; CN109192622B

Abstract

The invention discloses a kind of Direct Action Type relays of double-bridge structure, including terminal assemblies, axle assemble, magnetic circuit component；The terminal assemblies are located at the top of axle assemble and opposite with axle assemble and set, and the lower removable of axle assemble is nested in magnetic circuit component and can move up and down；The axle assemble includes four movable contacts, Shang Qiao, Xia Qiao, bridge bar, bridge spring, four movable contact difference rivet or welds are 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 lower part of bridge bar.Since axle assemble of the present invention is doube bridge direct dynamic structure, by the original voltage in contact both ends, divide two sections of gaps equally respectively, the voltage for reducing contact both ends, reduces the energy of electric arc, the original electric current in contact both ends is divided equally respectively on two bridges, reduce the electric current for flowing through contact, it further reduced the energy of electric arc, 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 relays, more particularly to a kind of Direct Action Type relay of double-bridge structure.

Background technique

Power supply in automobile is mostly used 12VDC, so existing relay loaded load voltage is mostly 12VDC.With garage The development of industry, more and more high-powered automobiles elements are applied on automobile, and the battery pack of 12V has gradually met not The demands of these high-power components.Since 48V system has the advantages that high-power components can be carried and reduces automobile fuel consumption, It has begun and original 12V system is gradually replaced to be applied on automobile.With 48V systematic difference, AUTOMOTIVE RELAY is specified negative Load has also been increased to 48VDC by original 12VDC, but existing AUTOMOTIVE RELAY does not switch so big voltage rating and electricity Stream.

Existing AUTOMOTIVE RELAY is usually made of magnetic circuit system, contact system and auxiliary system.Figure 1A is a kind of typical AUTOMOTIVE RELAY structural schematic diagram.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 type 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 movable contact 22 and the contact of stationary contact 32 and disconnect realization relay cut-offs function.Contact is contacting When, as load voltage is increased to 48VDC by 12VDC, load voltage is increased to 200A, and existing AUTOMOTIVE RELAY can generate very Big heat, more than the thermal denaturation temperature of cavity material, to damage relay.Contact can generate electric arc when disconnecting, And voltage is bigger, electric current is bigger, and arc energy is stronger, existing AUTOMOTIVE RELAY, and disconnection when does not extinguish 48VDC, 200A The electric arc generated is loaded, that is, the on-off function of relay cannot be achieved, it is also possible to cause the burning or explosion of relay.Have Relay added magnet steel or seal cavity, considerably increase cost to improve arc extinguishing ability.

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

Summary of the invention

The purpose of the present invention is to provide a kind of Direct Action Type relays of double-bridge structure with long service life.

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

The present invention is a kind of Direct Action Type relay of double-bridge structure, including terminal assemblies, axle assemble, magnetic circuit component；The end Sub-component is located at the top of axle assemble and opposite with axle assemble and set, and the lower removable of axle assemble is nested in magnetic circuit component and can It moves up and down；The axle assemble includes four movable contacts, Shang Qiao, Xia Qiao, bridge bar, bridge spring, two movable contact rivet or welds On upper bridge, two movable contact rivet or welds are fixed on the top of bridge bar, bridge on lower bridge after overlapping 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 lower part of bridge bar；The Shang Qiao and lower bridge are connected in parallel on circuit, point The electric current in circuit is carried on a shoulder pole, four movable contacts are divided into two groups and constitute individually with left and right two pairs of stationary contacts on terminal assemblies respectively Gap and by two groups of gap series on circuit, share loop voltage.

The convex closure to raise upward is equipped in the middle part of the lower bridge, which acts against on the bottom surface in the middle part of bridge.

It after adopting the above scheme, is doube bridge Direct Action Type since axle assemble of the present invention includes four movable contacts, Shang Qiao, lower bridge Structure is simultaneously equipped with convex closure on lower bridge, has the advantage that

1, it can be generated double in original gap in the case where identical armature travel；

2, the voltage that contact both ends are original divides two sections of gaps equally respectively, reduces the voltage at contact both ends, reduces electric arc Energy；

3, the electric current that contact both ends are original is divided equally respectively on two bridges, reduces the electric current for flowing through contact, further reduced The energy of electric arc；

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

The above 4 points extinguishings for being conducive to electric arc, the consumption of contact will substantially reduce, and improve relay life.In addition, this When the dynamic iron core of invention drives axle assemble to act upwards, a pair of of movable contact on a pair of of movable contact and lower bridge on upper bridge simultaneously and Two pairs of stationary contact point contacts on terminal assemblies simultaneously compress, and have convex closure on lower bridge, and bridge can swing around lower bridge convex closure in guarantee, Four groups of contacts caused by so as to adjust because of manufacture and rigging error are uneven, and helping to realize four groups of contacts can contact And it compresses.Electric current is divided into two-way at this time, reduces power consumption when contact closure, to reduce relay closed temperature.

The present invention is further illustrated in the following with reference to the drawings and specific embodiments.

Detailed description of the invention

Figure 1A is the structural schematic diagram for commonly using AUTOMOTIVE RELAY；

Fig. 1 is axonometric drawing of the invention；

Fig. 2 is front view of the invention；

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

Fig. 4 is stereogram exploded view of the present invention；

Fig. 5 is the stereogram 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.

Specific 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 2, magnetic circuit component 3.

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

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

As shown in Figure 4-Figure 6, the axle assemble 2 includes four movable contacts 21,22,23,24, upper bridge 25, lower bridge 26, bridge Bar 27, bridge spring 28.The upper bridge 25 and lower 26 shape of bridge are all in zigzag, and upper bridge 25 and lower bridge 26 are staggered, and described is upper Bridge 25 and lower bridge 26 are fabricated using impact style.Two movable contacts 21,22 rivet or welds are on upper bridge 25, two dynamic touchings 23,24 rivet or welds of point are on lower bridge 26, and overlapping is by being fixed on bridge bar 27 after snap ring 29 in the middle part of upper bridge 25 and lower bridge 26 Top, the lower end activity of bridge bar 27 penetrate in magnetic circuit component 3 and by 31 top of static iron core in snap ring 210 and magnetic circuit component 3 It abuts against, bridge spring 28 is socketed in the lower part of bridge bar 27 and is located in magnetic circuit component 3；The upper bridge 25 and lower bridge 26 are connected in parallel on circuit On, share the electric current in circuit, four 21,22,23,24 points of movable contact for two groups and respectively with left and right two pairs on terminal assemblies 1 Stationary contact 11,12 constitutes individual gap and by two groups of gap series on circuit, shares loop voltage.

The convex closure 261 to raise upward is equipped in the middle part of the lower bridge 26, which acts against the bottom surface at 25 middle part of bridge On, which ensure that bridge 25 can swing around lower 26 convex closure 261 of bridge.

The working principle of the invention:

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

Emphasis of the invention is that movable contact is constituted by four, and rivet or weld uses up and down on two bridges Bridge is Z-shaped to design the matching requirements for meeting small size.

The above is only the preferred embodiment of the present invention, the structure type of Shang Qiao and lower bridge can there are many, therefore cannot Limited the scope of implementation of the present invention with this, i.e., according to equivalence changes made by scope of the present invention patent and description with repair Decorations should still belong in the range of the invention patent covers.

Claims

1. a kind of Direct Action Type relay of double-bridge structure, including terminal assemblies, axle assemble, magnetic circuit component；The terminal assemblies Positioned at the top of axle assemble and opposite and set with axle assemble, the lower removable of axle assemble be nested in magnetic circuit component and can on move down It is dynamic；It is characterized by: the axle assemble includes four movable contacts, Shang Qiao, Xia Qiao, bridge bar, bridge spring, two movable contacts are set to On upper bridge, two movable contacts are set on lower bridge, are fixed on the top of bridge bar, the lower end of bridge bar in the middle part of Shang Qiao and lower bridge after overlapping Activity penetrates magnetic circuit component, and bridge spring is socketed in the lower part of bridge bar；The Shang Qiao and lower bridge are connected in parallel on circuit, share circuit Electric current, four movable contacts are divided into two groups and constitute individual gap with left and right two pairs of stationary contacts on terminal assemblies respectively and incite somebody to action Two groups of gap series share loop voltage on circuit.

2. the Direct Action Type relay of double-bridge structure according to claim 1, it is characterised in that: be equipped in the middle part of the lower bridge The convex closure to raise upward, the convex closure act against on the bottom surface in the middle part of bridge.

3. the Direct Action Type relay of double-bridge structure according to claim 1, it is characterised in that: the Shang Qiao and lower bridge shape Shape is all in zigzag, and Shang Qiao and lower bridge are staggered.

4. the Direct Action Type relay of double-bridge structure according to claim 1, it is characterised in that: two movable contact rivetings It connects or is welded on bridge, under two movable contact rivet or welds on bridge.

5. the Direct Action Type relay of double-bridge structure according to claim 1, it is characterised in that: the Shang Qiao and lower bridge are adopted It is fabricated with impact style.