CN208142113U - A kind of breaker bounce-proof auxiliary contact - Google Patents
A kind of breaker bounce-proof auxiliary contact Download PDFInfo
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- CN208142113U CN208142113U CN201820444180.6U CN201820444180U CN208142113U CN 208142113 U CN208142113 U CN 208142113U CN 201820444180 U CN201820444180 U CN 201820444180U CN 208142113 U CN208142113 U CN 208142113U
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- lever
- auxiliary contact
- cam lever
- contact support
- breaker
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Abstract
A kind of breaker bounce-proof auxiliary contact, which is characterized in that it includes auxiliary contact support, and microswitch group is fixedly mounted in the auxiliary contact support；Lever is mounted in the auxiliary contact support and can rotate, and described lever one end and the microswitch group link, and the other end and cam lever link；Cam lever is mounted in the auxiliary contact support and can rotate, and one end of the cam lever and the lever link, and the other end and mechanism spiral arm link, and reset spring one end is on the auxiliary contact support, and the other end is on the cam lever.The breaker bounce-proof auxiliary contact will not touch auxiliary microswitch during allowing mechanism spiral arm to rebound, the technological deficiency of switching signal inaccuracy caused by moving back and forth so as to avoid moving contact rebound lead agency spiral arm by adding multi-grade lever transmission mechanism.
Description
Technical field
The utility model belongs to low tension switch technical field, is specifically exactly to be related to a kind of breaker bounce-proof auxiliary touching
Head.
Background technique
It is auxiliary to breaker with a large amount of utilizations of the PLC intelligent control technology in electric system (especially wind power system)
Contact signal feedback is helped to propose that higher response requirement guarantees power supply quality so as to the control system of system accurately and timely,
Therefore, the opening/closing signal response of auxiliary contact of breaker becomes particularly important.
Actuator in traditional auxiliary contact handoff procedure, on multi-pass lever one end really up to the mark and switch operating mechanism
Contact, the other end is contacted with the microswitch on auxiliary contact, thus the division state of search switch, generally, in switch point
In place in a flash, the microswitch on auxiliary contact is converted to normally-closed contact from normally opened contact to lock, but traditional switch exists
There is the case where moving contact rebound when separating brake, microswitch is caused to be converted to normally-closed contact from normally opened contact, then from normally closed touching
Point is converted to normally opened contact, cyclic switching, and until rebound stops, such words passes through the division shape of auxiliary contact acquisition switch
State signal occurs as soon as frequent switching, extremely inaccurate to the signal of client feedback, the electric appliance malfunction that is likely to result on route and
Biggish loss.
The reason of causing above-mentioned phenomenon to occur is to switch during the opening process, the driving auxiliary touching of operating mechanism spiral arm actuator
Hard lever, the microswitch on hard lever driving contact contact, make its it is normally opened with it is normally closed between switch.Due to operating mechanism
Drive moving contact together separating brake when, moving contact movement have certain initial velocity and quality, when separating brake encounters limit shaft in place,
Moving contact moves a distance by reaction force pull operation mechanism spiral arm, then toward combined floodgate direction, is just struck against in place in separating brake
When limit shaft, contact is switched to normally-closed contact by normally opened contact, but encounters when moving a distance toward combined floodgate direction after limit shaft,
Contact is switched to normally opened contact by normally-closed contact, causes contact switching unreliable.
Chinese patent ZL200810244463.7 discloses a kind of auxiliary switch for circuit breaker, belongs to low-voltage electrical apparatus attachment technique
Field.The shell being fitted to each other including a pair, the microswitch that is located in the shell chamber of shell and the shell chamber for being similarly located at shell
In driving member, constituting on the driving member has the first contact arm of the haptic element for activating the microswitch and composition to have spy
For the second contact arm for being used to outside the shell activate for circuit breaker operation mechanism, it is characterized in that constituting on first contact arm
There is the first, second working face of the haptic element for continuously touching the microswitch, wherein the first working face is formed in the first touching
On the upper surface of arm, and the second working face is formed in the auxiliary switch on the top end face of the first contact arm and has protected making for shield microswitch
Use the service life；Reliability of Microprocessor and the safety that microswitch can be improved, finally enable the reliability of auxiliary switch ensure.But
The auxiliary contact is the protection considered when circuit breaker operation mechanism generates overshoot phenomenon to microswitch, on solving
It states since the presence of moving contact rebound phenomena causes microswitch to be converted to normally-closed contact from normally opened contact, then turns from normally-closed contact
Chemical conversion normally opened contact cyclic switching is to make the technical problem of signal inaccuracy.
Utility model content
The purpose of this utility model causes microswitch from normal aiming at the above-mentioned presence due to moving contact rebound phenomena
It opens contact and is converted to normally-closed contact, then be converted to normally opened contact cyclic switching from normally-closed contact to make the technology of signal inaccuracy
Problem.A kind of breaker bounce-proof auxiliary contact is provided, by adding multi-grade lever transmission mechanism, avoids moving contact rebound band
The inaccuracy of switching signal caused by motivation structure spiral arm moves back and forth.
Technical solution
In order to achieve the above technical purposes, the utility model devises a kind of breaker bounce-proof auxiliary contact, feature
It is, it includes auxiliary contact support, and microswitch group is fixedly mounted in the auxiliary contact support；Lever is mounted on described
It can be rotated in auxiliary contact support, described lever one end and the microswitch group link, and the other end and cam lever link；
Cam lever is mounted in the auxiliary contact support and can rotate, and one end of the cam lever and the lever link, separately
One end and mechanism spiral arm link, and on the auxiliary contact support, the other end is mounted in the cam lever for reset spring one end
On.
Further, the mechanism spiral arm, which rotates clockwise, is able to drive the cam lever and rotates counterclockwise, the cam
Lever is able to drive the lever rotation first during rotating counterclockwise, the lever rotation drives the microswitch group to close
It closes, the cam lever continues not activating the lever during rotating counterclockwise；
When the mechanism spiral arm rebounds counterclockwise, the reset spring drives the cam lever to rotate clockwise, described
Cam lever does not activate the lever during rotating clockwise.
Further, the lever and one end that the cam lever links are that circular arc bumps are wavy, the cam lever
One end with lever linkage is local arc-shaped.
Further, the microswitch group includes several microswitches, and several microswitches are installed on axis side by side
One and axis two on, the axis one and two both ends of axis are installed on the auxiliary contact support, and axis one and two both ends of axis are equipped with gear
Circle.
Further, the cam lever includes rotor, and the rotor both ends are mounted in the peace of the auxiliary contact support
It fills in hole one, described cam lever one end is stretched out long-armed by mechanism spiral arm actuating, the other end stretching galianconism actuating thick stick
Bar is additionally provided with spring eye on the cam lever.
Further, in the spring hanging hole on the auxiliary contact support, the other end is mounted in for described reset spring one end
In spring eye on the cam lever.
Further, the lever includes rotation axis, and the rotation axis both ends are mounted in the mounting hole of the auxiliary contact support
In two, lever arm is stretched out in described lever one end and the haptic element of the microswitch links, and the other end and the cam lever link.
Further, the auxiliary contact support is on breaker body.
Beneficial effect
The utility model provides a kind of breaker bounce-proof auxiliary contact, by adding multi-grade lever transmission mechanism, allows machine
Auxiliary microswitch will not be touched during the rebound of structure spiral arm, is moved back and forth so as to avoid moving contact rebound lead agency spiral arm
The technological deficiency of caused switching signal inaccuracy.
Detailed description of the invention
Attached drawing 1 is the decomposition diagram of the utility model embodiment.
Attached drawing 2 is the utility model embodiment using scheme of installation.
Attached drawing 3 is the structural schematic diagram of the utility model embodiment.
Attached drawing 4 is lever and cam lever relation schematic diagram in the utility model embodiment.
Attached drawing 5 is that auxiliary contact switches preceding schematic diagram in the utility model embodiment.
Attached drawing 6 be in the utility model embodiment auxiliary contact switching after intermediate state schematic diagram.
Attached drawing 7 be in the utility model embodiment auxiliary contact switching after end-state schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in further details.
Embodiment
As shown in attached drawing 1,2 and 3, a kind of breaker bounce-proof auxiliary contact, it includes auxiliary contact support 1, described auxiliary
Help contact supporting 1 on breaker body 8.Microswitch group 2 is fixedly mounted in the auxiliary contact support 1, and lever 3 is pacified
Can be rotated in the auxiliary contact support 1, described 3 one end of lever and the microswitch group 2 link, the other end with it is convex
Turbine/lever 4 links；Cam lever 4 is mounted in the auxiliary contact support 1 and can rotate, one end of the cam lever 4 with
The lever 4 links, and the other end and mechanism spiral arm 5 link；6 one end of reset spring is another on the auxiliary contact support 1
End is on the cam lever 4.
As shown in Fig. 4, the lever 3 and one end that the cam lever 4 links are that circular arc bumps are wavy, described convex
One end of turbine/lever 4 and the lever 3 linkage is local arc-shaped.In the present embodiment as shown in Fig. 1, the microswitch group
2 include several microswitches 201, and several microswitches 201 are installed on side by side on axis 1 and axis 2 203, the axis
1 and 2 203 both ends of axis be installed on the auxiliary contact support 1, axis 1 and 2 203 both ends of axis are equipped with retaining ring 7.
The cam lever 4 includes rotor 401, and 401 both ends of rotor are mounted in the peace of the auxiliary contact support 1
It fills in hole 1, described 4 one end of cam lever is stretched out long-armed 402 and activated by the mechanism spiral arm 5, and the other end stretches out galianconism 403
The lever 3 is activated, is additionally provided with spring eye 404 on the cam lever 4.As shown in figures 3 and 4, described 6 one end of reset spring
In the spring hanging hole 102 on the auxiliary contact support 1, spring eye 404 of the other end on the cam lever 4
It is interior.As shown in attached drawing 1,3 and 4, the lever 3 includes rotation axis 301, and 301 both ends of rotation axis are mounted in the auxiliary contact
In the mounting hole 2 103 of bracket 1, lever arm 302 is stretched out in described 3 one end of lever and the haptic element 201a of the microswitch 201 joins
Dynamic, the other end and the cam lever 4 link.
As shown in Fig. 3, when breaker switching-on mechanism spiral arm 5 rotates counterclockwise, cam lever 4 is in reset spring 6
It is rotated clockwise under pulling force effect around rotor 401, the linkage of lever 3 is pushed using the direction thrust of microswitch haptic element 201a
End, the linkage end of final lever 3 are separated with microswitch haptic element 201a, 2 state successful switch of microswitch group.The cam thick stick
Bar 4 does not activate the lever 3 during rotating clockwise because of counterclockwise rebound of breaker open operation mechanism spiral arm 5.
As shown in attached drawing 5,6 and 7, when breaker open operation mechanism spiral arm 5 rotates clockwise, 5 up time of mechanism spiral arm
Needle rotation drives the cam lever 4 to rotate counterclockwise around rotor 401, and the cam lever 4 is first during rotating counterclockwise
It is first able to drive the lever 3 to rotate, the rotation of lever 3 drives the closure of microswitch group 2 to realize 2 shape of microswitch group
State switching.Then the cam lever 4 continues to rotate counterclockwise, this does not activate the lever 3 in the process.After breaker open operation,
Mechanism spiral arm 5 swings back and forth because of rebound, and the present embodiment calculates cam lever 4 and 3 relative position of lever and convex by design
The shape of turbine/lever 4 and the linkage of lever 3 end, can effectively avoid rebound leads to the problem of microswitch signal inaccuracy, it is ensured that auxiliary
Help the accurate output breaker open and close state of switch.
The embodiments of the present invention structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification
Revealed content is not intended to limit the utility model enforceable limit so that those skilled in the art understands and reads
Fixed condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, not
It influences still fall in the revealed skill of the utility model under the effect of the utility model can be generated and the purpose that can reach
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre ",
The term of " clockwise ", " counterclockwise " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
Claims (8)
1. a kind of breaker bounce-proof auxiliary contact, which is characterized in that it includes：
Auxiliary contact support (1)；
Microswitch group (2) is fixedly mounted in the auxiliary contact support (1)；
Lever (3), being mounted in the auxiliary contact support (1) can rotate, described lever (3) one end and the microswitch
Group (2) linkage, the other end and cam lever (4) are linked；
Cam lever (4), being mounted in the auxiliary contact support (1) can rotate, one end of the cam lever (4) and institute
Lever (3) linkage is stated, the other end and mechanism spiral arm (5) are linked；
Reset spring (6), on the auxiliary contact support (1), the other end is mounted in the cam thick stick for reset spring (6) one end
On bar (4).
2. a kind of breaker bounce-proof auxiliary contact as described in claim 1, it is characterised in that：The mechanism spiral arm (5) is suitable
Hour hands rotation is able to drive the cam lever (4) and rotates counterclockwise, and the cam lever (4) rotates counterclockwise in the process first
It is able to drive the lever (3) rotation, lever (3) rotation drives microswitch group (2) closure, the cam lever
(4) continue not activating the lever (3) during rotating counterclockwise；
When the mechanism spiral arm (5) is rebounded counterclockwise, the reset spring (6) drives the cam lever (4) to rotate clockwise,
The cam lever (4) does not activate the lever (3) during rotating clockwise.
3. a kind of breaker bounce-proof auxiliary contact as claimed in claim 2, it is characterised in that：The lever (3) with it is described
One end of cam lever (4) linkage is that circular arc bumps are wavy, one end of the cam lever (4) and the lever (3) linkage
For local arc-shaped.
4. a kind of breaker bounce-proof auxiliary contact as described in claim 1, it is characterised in that：The microswitch group (2)
Including several microswitches (201), several microswitches (201) are installed on axis one (202) and axis two (203) side by side
On, the axis one (202) and axis two (203) both ends are installed on the auxiliary contact support (1), axis one (202) and axis two
(203) both ends are equipped with retaining ring (7).
5. a kind of breaker bounce-proof auxiliary contact as described in claim 1, it is characterised in that：Cam lever (4) packet
It includes rotor (401), rotor (401) both ends are in the mounting hole one (101) of the auxiliary contact support (1), institute
It states cam lever (4) one end stretching long-armed (402) to be activated by the mechanism spiral arm (5), the other end stretches out galianconism (403) and activates institute
It states lever (3), is additionally provided with spring eye (404) on the cam lever (4).
6. a kind of breaker bounce-proof auxiliary contact as described in claim 1, it is characterised in that：The reset spring (6) one
End is in the spring hanging hole (102) on the auxiliary contact support (1), bullet of the other end on the cam lever (4)
In spring hole (404).
7. a kind of breaker bounce-proof auxiliary contact as described in claim 1, it is characterised in that：The lever (3) includes turning
Moving axis (301), rotation axis (301) both ends are in the mounting hole two (103) of the auxiliary contact support (1), the thick stick
The haptic element (201a) that lever arm (302) and the microswitch (201) are stretched out in bar (3) one end links, the other end and the cam
Lever (4) linkage.
8. a kind of breaker bounce-proof auxiliary contact as described in claim 1, it is characterised in that：The auxiliary contact support
(1) on breaker body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820444180.6U CN208142113U (en) | 2018-03-30 | 2018-03-30 | A kind of breaker bounce-proof auxiliary contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820444180.6U CN208142113U (en) | 2018-03-30 | 2018-03-30 | A kind of breaker bounce-proof auxiliary contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208142113U true CN208142113U (en) | 2018-11-23 |
Family
ID=64291882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820444180.6U Active CN208142113U (en) | 2018-03-30 | 2018-03-30 | A kind of breaker bounce-proof auxiliary contact |
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| Country | Link |
|---|---|
| CN (1) | CN208142113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493064A (en) * | 2018-03-30 | 2018-09-04 | 上海良信电器股份有限公司 | A kind of breaker bounce-proof auxiliary contact |
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2018
- 2018-03-30 CN CN201820444180.6U patent/CN208142113U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493064A (en) * | 2018-03-30 | 2018-09-04 | 上海良信电器股份有限公司 | A kind of breaker bounce-proof auxiliary contact |
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