CN111785586A - Operating mechanism of circuit breaker - Google Patents
Operating mechanism of circuit breaker Download PDFInfo
- Publication number
- CN111785586A CN111785586A CN202010791841.4A CN202010791841A CN111785586A CN 111785586 A CN111785586 A CN 111785586A CN 202010791841 A CN202010791841 A CN 202010791841A CN 111785586 A CN111785586 A CN 111785586A
- Authority
- CN
- China
- Prior art keywords
- lock catch
- contact
- circuit breaker
- operating mechanism
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/521—Details concerning the lever handle
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- Breakers (AREA)
Abstract
The invention relates to an operating mechanism of a circuit breaker, which comprises a handle, a connecting rod, a lock catch, a contact head frame, a moving contact and a torsion spring, wherein the connecting rod is in linkage with the handle, the lock catch, the contact head frame, the moving contact is in linkage with the contact head frame, the torsion spring is arranged between the lock catch and the contact head frame, a limiting groove is formed in the contact head frame, a lock catch area and a tripping area are respectively formed at two ends of the limiting groove, a lock catch part is arranged on the lock catch corresponding to the lock catch area, a limiting surface capable of abutting against the lock catch part is arranged on the contact head frame, one end of the connecting rod is inserted into the lock catch area, a locking surface matched with the connecting rod is arranged on the lock catch part, a locking cavity for locking the connecting rod is formed between the locking surface and the lock catch area when. The circuit breaker breaking device has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly and capability of effectively improving the breaking capacity of the circuit breaker.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an operating mechanism of a circuit breaker.
Background
The miniature circuit breaker is also called a miniature circuit breaker and is mainly used for alternating current of 50HZ or 60HZ, rated voltage of below 400V and rated working current of below 63A. The device can be used for the overload and short-circuit protection of illumination, distribution lines and equipment of office buildings, houses and similar buildings, and can also be used for the infrequent on-off operation and switching of the lines. The method is mainly used in various places such as industrial, commercial, high-rise and civil houses. With the development of society, the use requirement of users on the miniature circuit breaker is higher and higher, and the miniature circuit breaker gradually develops towards high breaking and large current. The existing miniature circuit breaker comprises a shell, an operating mechanism, a contact system, a tripping mechanism, an arc extinguishing system and a conductive system, wherein the operating mechanism comprises a handle, a pull rod, a lock catch and a jump buckle, the operating mechanism of the existing circuit breaker is complex in structural design, more in parts, more in complex assembly, lower in assembly efficiency and lower in tripping sensitivity, the existing miniature circuit breaker is slow in opening and closing speed and weak in breaking capacity, and therefore the existing miniature circuit breaker cannot adapt to the development trend of high segmentation and current.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the circuit breaker operating mechanism which has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly and capability of effectively improving the breaking capacity of the circuit breaker.
In order to achieve the purpose, the operating mechanism of the circuit breaker comprises a handle, a connecting rod, a lock catch, a contact frame, a moving contact and a torsion spring, wherein the connecting rod is in linkage with the handle, the lock catch is arranged, the moving contact is in linkage with the contact frame, the torsion spring is arranged between the lock catch and the contact frame, a limiting groove is formed in the contact frame, a lock catch area and a tripping area are formed in two ends of the limiting groove respectively, a lock catch portion is arranged on the lock catch corresponding to the lock catch area, a limiting surface capable of abutting against the lock catch portion is arranged on the contact frame, one end of the connecting rod penetrates into the lock catch area, a locking surface matched with the connecting rod is arranged on the lock catch portion, a locking cavity for locking the connecting rod is formed between the locking surface and the lock catch area when the circuit breaker is switched on, and one end of the connecting rod can slide into the tripping area from.
The beneficial effect of above-mentioned structure is: the operating mechanism of the traditional miniature circuit breaker is improved, the structure of the operating mechanism of the traditional miniature circuit breaker is greatly simplified, the closing speed is higher, the tripping action is more sensitive, the breaking capacity of the operating mechanism of the circuit breaker is favorably improved, a lock catch area and a tripping area are arranged on the lock catch, one end of the connecting rod is locked between the lock catch and the lock catch area during closing, the reliable closing of the operating mechanism can be realized, the limit of the locking surface of the lock catch is lost at one end of the connecting rod during tripping, and the quick tripping and separating brake of the operating mechanism can be realized. Therefore, the operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly and capability of effectively improving the breaking capacity of the circuit breaker.
Particularly, the contact head frame is provided with a convex part, the convex part is provided with a contact spring, one end of the contact spring is clamped in a positioning groove on the contact head frame, and the other end of the contact spring is clamped on a limiting sheet on the movable contact. A contact spring is arranged between the contact frame and the moving contact, and the contact spring can enhance the contact pressure of the moving contact, so that the working reliability of the operating mechanism is improved.
Particularly, one end of the contact frame is provided with a switching-on and switching-off indicating part, and a switching-on indicating mark and a switching-off indicating mark are respectively arranged on the switching-on and switching-off indicating part. The contact frame is provided with a switching-on and switching-off indicating part, so that the switching-on and switching-off indicating function of the operating mechanism can be realized.
Particularly, a boss is arranged on the lock catch corresponding to the torsion spring, the torsion spring is sleeved on the boss, one end of the torsion spring is clamped in the clamping groove of the contact frame, and the other end of the torsion spring is clamped in the positioning groove of the lock catch. The torsional spring is clamped between the contact frame and the lock catch, so that the assembly of the contact frame, the lock catch and the torsional spring is facilitated, and the assembly efficiency of the operating mechanism is improved.
Particularly, the latch is provided with a pull rod, one end of the pull rod is provided with a hook body, and the hook body is clamped on the bimetallic strip of the circuit breaker and forms linkage fit of the latch and the bimetallic strip. The lock catch is provided with a pull rod which is in linkage fit with the bimetallic strip, and when the circuit breaks down, the bimetallic strip drives the lock catch to perform tripping action, so that the circuit is protected.
Drawings
FIG. 1 is a perspective view of a first viewing angle in accordance with an embodiment of the present invention.
FIG. 2 is a perspective view from a second perspective view according to an embodiment of the present invention.
Fig. 3 is a perspective view of a contact mount according to an embodiment of the invention.
Fig. 4 is a perspective view of a latch according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1 to 4, an embodiment of the present invention is an operating mechanism of a circuit breaker, including a handle 10, a connecting rod 11 linked with the handle 10, a latch 12, a contact frame 13, a movable contact 14 linked with the contact frame 13, and a torsion spring 15 disposed between the latch 12 and the contact frame 13, wherein the contact frame 13 is provided with a limiting groove 131, two ends of the limiting groove 131 are respectively formed with a latch region 132 and a trip region 133, the latch 12 is provided with a latch portion 121 corresponding to the latch region 133, the contact frame 13 is provided with a limiting surface 130 capable of abutting against the latch portion 121, one end of the connecting rod 11 is inserted into the latch region 132, the latch portion 121 is provided with a locking surface 122 matched with the connecting rod 11, when the circuit breaker is switched on, a locking cavity 134 for locking the connecting rod 11 is formed between the locking surface 122 and the latch region 132, when the circuit breaker is switched off and switched off, one end of the link 11 can slide from the locking region 132 into the releasing region 133. The contact holder 13 is provided with a groove 139, the middle part of the latch 12 is clamped in the groove 139, and the middle part of the latch 12 is provided with a rotating shaft 17 connected with the contact holder 13. The locking surface 122 is an arc surface.
As shown in fig. 1 and 2, the contact frame 13 is provided with a convex portion 135, the convex portion 135 is provided with a contact spring 16, one end of the contact spring 16 is engaged in a positioning groove 136 on the contact frame 13, and the other end of the contact spring 16 is engaged on a limiting piece 141 on the movable contact 14. A contact spring is arranged between the contact frame and the moving contact, and the contact spring can enhance the contact pressure of the moving contact, so that the working reliability of the operating mechanism is improved. One end of the contact frame 13 is provided with a switching indication part 137, and the switching indication part 137 is respectively provided with a switching indication mark 1371 and a switching indication mark 1372. The contact frame is provided with a switching-on and switching-off indicating part, so that the switching-on and switching-off indicating function of the operating mechanism can be realized. The latch 12 is provided with a boss 123 corresponding to the torsion spring 15, the torsion spring 15 is sleeved on the boss 123, one end of the torsion spring 15 is clamped in the clamping groove 138 of the contact frame 13, and the other end of the torsion spring 15 is clamped in the positioning groove 124 of the latch 12. The torsional spring is clamped between the contact frame and the lock catch, so that the assembly of the contact frame, the lock catch and the torsional spring is facilitated, and the assembly efficiency of the operating mechanism is improved. The latch 12 is provided with a pull rod 125, one end of the pull rod 125 is provided with a hook 126, and the hook 126 is clamped on the bimetallic strip of the circuit breaker and forms linkage fit of the latch 12 and the bimetallic strip. The lock catch is provided with a pull rod which is in linkage fit with the bimetallic strip, and when the circuit breaks down, the bimetallic strip drives the lock catch to perform tripping action, so that the circuit is protected.
The operating mechanism of the traditional miniature circuit breaker is improved, the structure of the operating mechanism of the traditional miniature circuit breaker is greatly simplified, the closing speed is higher, the tripping action is more sensitive, the breaking capacity of the operating mechanism of the circuit breaker is favorably improved, a lock catch area and a tripping area are arranged on the lock catch, one end of the connecting rod is locked between the lock catch and the lock catch area during closing, the reliable closing of the operating mechanism can be realized, the limit of the locking surface of the lock catch is lost at one end of the connecting rod during tripping, and the quick tripping and separating brake of the operating mechanism can be realized. Therefore, the operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenience and quickness in assembly and capability of effectively improving the breaking capacity of the circuit breaker.
Claims (5)
1. An operating mechanism of a circuit breaker, characterized in that: the operating mechanism comprises a handle, a connecting rod, a lock catch, a contact head frame, a moving contact and a torsion spring, wherein the connecting rod is arranged in linkage with the handle, the moving contact is arranged in linkage with the contact head frame, the torsion spring is arranged between the lock catch and the contact head frame, a limiting groove is formed in the contact head frame, a lock catch area and a tripping area are formed at the two ends of the limiting groove respectively, a lock catch portion is arranged on the lock catch corresponding to the lock catch area, a limiting surface capable of being abutted against the lock catch portion is arranged on the contact head frame, one end of the connecting rod is inserted into the lock catch area, a locking surface matched with the connecting rod is arranged on the lock catch portion, when the circuit breaker is switched on, a locking cavity used for locking the connecting rod is formed between the locking surface and the lock catch area, and when the circuit breaker is tripped and.
2. The operating mechanism of a circuit breaker according to claim 1, wherein: the contact rack is provided with a convex part, the convex part is provided with a contact spring, one end of the contact spring is clamped in the positioning groove on the contact rack, and the other end of the contact spring is clamped on the limiting sheet on the moving contact.
3. The operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: one end of the contact frame is provided with a switching-on and switching-off indicating part, and a switching-on indicating mark and a switching-off indicating mark are respectively arranged on the switching-on and switching-off indicating part.
4. The operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the contact lock is characterized in that a boss is arranged on the lock catch corresponding to the torsion spring, the torsion spring is sleeved on the boss, one end of the torsion spring is clamped in the clamping groove of the contact frame, and the other end of the torsion spring is clamped in the positioning groove of the contact lock catch.
5. The operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the lock catch is provided with a pull rod, one end of the pull rod is provided with a hook body, the hook body is clamped on the bimetallic strip of the circuit breaker, and the lock catch and the bimetallic strip are in linkage fit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010791841.4A CN111785586A (en) | 2020-08-08 | 2020-08-08 | Operating mechanism of circuit breaker |
| PCT/CN2021/109983 WO2022033343A1 (en) | 2020-08-08 | 2021-08-02 | Operating mechanism for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010791841.4A CN111785586A (en) | 2020-08-08 | 2020-08-08 | Operating mechanism of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111785586A true CN111785586A (en) | 2020-10-16 |
Family
ID=72761666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010791841.4A Pending CN111785586A (en) | 2020-08-08 | 2020-08-08 | Operating mechanism of circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111785586A (en) |
| WO (1) | WO2022033343A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022033343A1 (en) * | 2020-08-08 | 2022-02-17 | 浙江威利坚科技股份有限公司 | Operating mechanism for circuit breaker |
| WO2022135048A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Linkage device comprising lock, movable contact seat and movable contact of circuit breaker |
| WO2022135046A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Moving contact mechanism for circuit breaker |
| WO2022135044A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Lockout device of circuit breaker |
| WO2022135038A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Moving contact mechanism of circuit breaker |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465239B (en) * | 2013-09-24 | 2017-04-12 | 上海电科电器科技有限公司 | Interchange type operating mechanism |
| CN208548329U (en) * | 2018-08-02 | 2019-02-26 | 公牛集团股份有限公司 | The operating mechanism and breaker of breaker |
| CN111785586A (en) * | 2020-08-08 | 2020-10-16 | 浙江威利坚科技股份有限公司 | Operating mechanism of circuit breaker |
-
2020
- 2020-08-08 CN CN202010791841.4A patent/CN111785586A/en active Pending
-
2021
- 2021-08-02 WO PCT/CN2021/109983 patent/WO2022033343A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022033343A1 (en) * | 2020-08-08 | 2022-02-17 | 浙江威利坚科技股份有限公司 | Operating mechanism for circuit breaker |
| WO2022135048A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Linkage device comprising lock, movable contact seat and movable contact of circuit breaker |
| WO2022135046A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Moving contact mechanism for circuit breaker |
| WO2022135044A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Lockout device of circuit breaker |
| WO2022135038A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Moving contact mechanism of circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022033343A1 (en) | 2022-02-17 |
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