CN117292991A - Operating mechanism of circuit breaker - Google Patents
Operating mechanism of circuit breaker Download PDFInfo
- Publication number
- CN117292991A CN117292991A CN202311493096.5A CN202311493096A CN117292991A CN 117292991 A CN117292991 A CN 117292991A CN 202311493096 A CN202311493096 A CN 202311493096A CN 117292991 A CN117292991 A CN 117292991A
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- CN
- China
- Prior art keywords
- connecting rod
- hole
- shell
- groove
- contact
- 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
Links
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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
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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
-
- 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
- H01H71/24—Electromagnetic mechanisms
-
- 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
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention relates to an operating mechanism of a circuit breaker, which comprises a handle, a lock catch, a jump button rotationally arranged in a shell, a torsion spring arranged between the jump button and the shell, a contact frame rotationally arranged in the shell, a spring arranged between the contact frame and the shell, and a moving contact in linkage fit with the contact frame, wherein the handle is connected with the lock catch through a connecting rod, one end of the lock catch is connected with the contact frame through a U-shaped connecting rod, the other end of the lock catch is provided with a locking groove matched with the jump button, the locking groove rotates along with the lock catch and can be buckled on one end of the jump button to lock the lock catch and realize the locking of the jump button, and the other end of the jump button is provided with a tripping part in linkage fit with an electromagnetic release and a bimetallic strip which can respectively drive the tripping part to act to unlock the lock catch and the jump button. The invention has the advantages of simple structure, stable and reliable performance, convenient assembly, high opening and closing speed and flexible operation.
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 the most widely used terminal protection electrical appliance among the building electrical terminal distribution devices, and can provide line protection of short circuit, overload, overvoltage and the like. For example, the residual current operation protector with overcurrent protection can cut off the fault power supply rapidly in a short time, protect the safety of human bodies and electric equipment and play the roles of overload, short circuit and leakage protection. The operating mechanism of the circuit breaker is one of core components of the circuit breaker and is used for driving the breaking and closing of the moving contact and the fixed contact. The operating mechanism of the traditional miniature circuit breaker comprises a handle, a contact frame, a movable contact, a jump button and a lock catch, wherein the jump button and the lock catch are respectively hinged on the contact frame, the handle is in linkage with the jump button through a U-shaped connecting rod, and switching on or switching off of the operating mechanism is realized through cooperation between the jump button and the lock catch. When the operating mechanism executes switching-on and switching-off, the switching-on and switching-off speed is relatively slow, so that the breaking capacity of the circuit breaker is weak. The operating mechanism is complex in structure, complex in assembly and unreliable in performance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the operating mechanism of the circuit breaker, which has the advantages of simple structure, stable and reliable performance, convenience in assembly, high opening and closing speed and flexible operation.
In order to achieve the above purpose, the operating mechanism of the circuit breaker comprises a handle, a lock catch, a jump button, a torsion spring, a contact frame, a spring and a moving contact, wherein the handle is arranged in a shell, the lock catch is arranged in the shell in a sliding mode, the jump button is arranged in the shell, the torsion spring is arranged between the jump button and the shell, the contact frame is arranged in the shell in a rotating mode, the spring is arranged between the contact frame and the shell, the moving contact is in linkage fit with the contact frame, the handle is connected with the lock catch through a connecting rod, one end of the lock catch is connected with the contact frame through a U-shaped connecting rod, the other end of the lock catch is provided with a locking groove matched with the jump button, the locking groove rotates along with the lock catch and can be buckled on one end of the jump button, the lock catch and the jump button are locked, the other end of the jump button is provided with a tripping part in linkage fit with an electromagnetic tripping device and a bimetallic strip, and the bimetallic strip can respectively drive the tripping part to act, and unlocking of the lock catch and the jump button is achieved.
The structure has the beneficial effects that the operating mechanism adopts a four-bar structure design, so that the operating moment of the circuit breaker is uniformly distributed, the condition that the circuit breaker is excessively operated or excessively light is avoided, and the operation is more flexible. The lock catch adopts a sliding type structural design, the handle drives the lock catch to slide through the connecting rod, and the lock catch drives the contact head frame to rapidly execute opening and closing actions through the U-shaped connecting rod, so that rapid opening and closing of the circuit breaker can be realized, and the opening and closing speed of the operating mechanism is higher. When the trip is carried out, the locking groove of the lock catch is buckled on the trip, the electromagnetic trip and the bimetallic strip can respectively drive the trip to act, the trip can be quickly unlocked with the lock catch, the trip action is more sensitive, and the reliability is higher. Therefore, the operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly, high opening and closing speed and flexible operation.
Particularly, a rotating shaft hole connected with a connecting rod is formed in the handle, one end of the connecting rod is inserted into the rotating shaft hole, a driving hole matched with the connecting rod is formed in the lock catch, a guide rod part penetrating through the driving hole and extending into the sliding guide hole of the shell is arranged at the other end of the connecting rod, and the guide rod part of the connecting rod moves along with the handle and slides back and forth in the sliding guide hole. The lock catch is arranged in the shell in a sliding manner through the connecting rod, so that the lock catch and the shell are convenient to assemble, the lock catch can reliably act in the shell, the lock catch can rapidly drive the contact frame to act, the speed of opening and closing of the operating mechanism is facilitated, and the reliability of the action is higher.
In particular, the locking groove is a cambered surface groove, and one end of the jump buckle is provided with a cambered surface bulge bearing surface matched with the locking groove. The trip buckle is provided with a cambered surface bulge bearing surface matched with the locking groove, so that the trip action of the trip buckle and the lock catch can be ensured to be more sensitive.
Particularly, one end of the lock catch is provided with a connecting hole matched with the U-shaped connecting rod, the contact frame is provided with a through hole matched with the U-shaped connecting rod, a guide groove is formed in the position, corresponding to the through hole, in the shell, one end of the U-shaped connecting rod is connected in the connecting hole, the other end of the U-shaped connecting rod penetrates through the through hole and extends in the guide groove, and the other end of the U-shaped connecting rod moves along with the lock catch and reciprocates in the guide groove. The contact frame is connected with the lock catch through the U-shaped connecting rod, so that the contact frame and the lock catch are conveniently assembled, one end of the U-shaped connecting rod is slidably arranged in the guide groove of the shell, and the transmission between the lock catch and the contact frame can be ensured to be more reliable.
Particularly, the contact frame on be provided with the location boss, the moving contact on be provided with location boss matched with locating hole, the location boss alternate in the locating hole, the location boss on be provided with the contact torsional spring, moving contact correspond location boss one side department and be provided with first spacing groove, second spacing groove respectively, contact torsional spring both ends block respectively on first spacing groove, second spacing groove. The contact torsion spring can increase the contact pressure of the moving contact, so that the moving contact can be reliably contacted with the fixed contact, and the moving contact and the contact frame are assembled in a clamping fit mode, thereby being beneficial to improving the assembly efficiency of the moving contact and the contact frame.
Particularly, a positioning column matched with the spring is arranged on the contact frame, one end of the spring is clamped on the positioning column, and the other end of the spring is clamped in a clamping groove in the shell. The spring can play a role in accelerating the action of the contact frame, so that the action speed of the operating mechanism is improved.
Particularly, a positioning groove is formed in one side of the contact frame corresponding to the positioning column, a positioning column is arranged in the shell corresponding to the positioning groove, and the positioning column is inserted into the positioning groove and is in rotary connection fit with the positioning column. The contact head frame and the shell are assembled in a clamping and matching mode, so that the contact head frame and the shell are convenient to assemble, reliable action of the contact head frame in the shell can be guaranteed, and the working reliability of the operating mechanism is improved.
Particularly, the shell in correspond to jump and detain department and be provided with the locating shaft, the locating shaft insert in the locating shaft hole at jump and detain middle part, the torsional spring suit on the locating shaft, torsional spring one end conflict in the joint inslot of jump knot, the torsional spring other end conflict on the spacing piece of shell. The jump button is rotationally arranged on the positioning shaft in the shell, so that the jump button can be guaranteed to rotate in the shell, and the torsion spring can improve the action sensitivity of the jump button, so that the action speed of the operating mechanism is faster.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a front view of an embodiment of the present invention.
Fig. 3 is an exploded view of an embodiment of the present invention.
Fig. 4 is a perspective view of a contact holder 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 11 rotatably disposed in a housing 10, a latch 12 slidably disposed in the housing 10, a latch 13 rotatably disposed in the housing 10, a torsion spring 14 disposed between the latch 13 and the housing 10, a contact frame 15 rotatably disposed in the housing 10, a spring 16 disposed between the contact frame 15 and the housing 10, and a moving contact 17 cooperatively engaged with the contact frame 15, wherein the handle 11 is connected with the latch 12 through a connecting rod 18, one end of the latch 12 is connected with the contact frame 15 through a U-shaped connecting rod 19, the other end of the latch 12 has a locking slot 120 cooperatively engaged with the latch 13, the locking slot 120 rotates along with the latch 12 and can be buckled on one end of the latch 13, and realizes locking of the latch 12 and the latch 13, the other end of the latch 13 has a trip portion 131 cooperatively engaged with an electromagnetic trip 20 and a bimetal 21, the electromagnetic trip 20 and the bimetal 21 can respectively drive the trip portion 131, and realize unlocking of the latch 12 and the latch 13. The handle 11 is provided with a rotating shaft hole 111 connected with the connecting rod 18, one end of the connecting rod 18 is inserted into the rotating shaft hole 111, the lock catch 12 is provided with a driving hole 121 matched with the connecting rod 18, the other end of the connecting rod 18 is provided with a guide rod portion 181 penetrating through the driving hole 121 and extending into the sliding guide hole 101 of the shell 10, and the guide rod portion 181 of the connecting rod 18 moves along with the handle 11 and slides back and forth in the sliding guide hole 101. The lock catch is arranged in the shell in a sliding manner through the connecting rod, so that the lock catch and the shell are convenient to assemble, the lock catch can reliably act in the shell, the lock catch can rapidly drive the contact frame to act, the speed of opening and closing of the operating mechanism is facilitated, and the reliability of the action is higher. The locking groove 120 is a cambered surface groove, and one end of the jump buckle 13 is provided with a cambered surface convex bearing surface 132 matched with the locking groove 120. The trip buckle is provided with a cambered surface bulge bearing surface matched with the locking groove, so that the trip action of the trip buckle and the lock catch can be ensured to be more sensitive.
As shown in fig. 1 and 3, one end of the lock catch 12 is provided with a connecting hole 122 matched with the U-shaped connecting rod 19, the contact frame 15 is provided with a through hole 151 matched with the U-shaped connecting rod 19, a guide groove 102 is arranged in the shell 10 corresponding to the through hole 151, one end of the U-shaped connecting rod 19 is connected in the connecting hole 122, the other end of the U-shaped connecting rod 19 passes through the through hole 102 and extends in the guide groove 102, and the other end of the U-shaped connecting rod 19 moves along with the lock catch 12 and reciprocates in the guide groove 102. The contact frame is connected with the lock catch through the U-shaped connecting rod, so that the contact frame and the lock catch are conveniently assembled, one end of the U-shaped connecting rod is slidably arranged in the guide groove of the shell, and the transmission between the lock catch and the contact frame can be ensured to be more reliable. The contact frame 15 on be provided with location boss 152, the moving contact 17 on be provided with location boss 152 matched with locating hole 170, location boss 152 alternate in locating hole 170, location boss 152 on be provided with contact torsional spring 22, moving contact 17 correspond location boss 152 one side department and be provided with first spacing groove 171, second spacing groove 172 respectively, contact torsional spring 22 both ends block respectively on first spacing groove 171, second spacing groove 172. The contact torsion spring can increase the contact pressure of the moving contact, so that the moving contact can be reliably contacted with the fixed contact, and the moving contact and the contact frame are assembled in a clamping fit mode, thereby being beneficial to improving the assembly efficiency of the moving contact and the contact frame. The contact frame 15 is provided with a positioning column 153 matched with the spring 16, one end of the spring 16 is clamped on the positioning column 153, and the other end of the spring 16 is clamped in the clamping groove 103 in the shell 10. The spring can play a role in accelerating the action of the contact frame, so that the action speed of the operating mechanism is improved. The contact frame 15 is provided with a positioning groove 154 corresponding to the positioning column 153 on one side, the housing 10 is provided with a positioning column 104 corresponding to the positioning groove 154, and the positioning column 104 is inserted into the positioning groove 154 and forms a rotary connection fit between the contact frame 15 and the positioning column 104. The contact head frame and the shell are assembled in a clamping and matching mode, so that the contact head frame and the shell are convenient to assemble, reliable action of the contact head frame in the shell can be guaranteed, and the working reliability of the operating mechanism is improved. The shell 10 in correspond to the jump 13 department be provided with the location axle 105, the location axle 105 alternate in the location shaft hole 133 at jump 13 middle part, torsional spring 14 suit on the location axle 105, torsional spring 14 one end conflict in the joint groove 134 of jump 13, torsional spring 14 other end conflict on the spacing piece 106 of shell 10. The jump button is rotationally arranged on the positioning shaft in the shell, so that the jump button can be guaranteed to rotate in the shell, and the torsion spring can improve the action sensitivity of the jump button, so that the action speed of the operating mechanism is faster.
The operating mechanism adopts a four-bar linkage structural design, so that the operating moment of the circuit breaker is uniformly distributed, the condition that the circuit breaker is excessively operated or is excessively light is avoided, and the operation is more flexible. The lock catch adopts a sliding type structural design, the handle drives the lock catch to slide through the connecting rod, and the lock catch drives the contact head frame to rapidly execute opening and closing actions through the U-shaped connecting rod, so that rapid opening and closing of the circuit breaker can be realized, and the opening and closing speed of the operating mechanism is higher. When the trip is carried out, the locking groove of the lock catch is buckled on the trip, the electromagnetic trip and the bimetallic strip can respectively drive the trip to act, the trip can be quickly unlocked with the lock catch, the trip action is more sensitive, and the reliability is higher. Therefore, the operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, convenience in assembly, high opening and closing speed and flexible operation.
Claims (8)
1. An operating mechanism of a circuit breaker, characterized in that: including rotating handle, the slip that sets up in the casing, rotate the jump knot that sets up in the casing, set up the torsional spring between jump knot and casing, rotate the movable contact that sets up in the casing contact frame, set up the spring between contact frame and casing, with contact frame linkage complex, the handle be connected with the hasp through the connecting rod, hasp one end be connected with the contact frame through U type connecting rod, the hasp other end have with jump knot matched with locking groove, the locking groove rotate and can lock on jump knot one end along with the hasp, and realize the locking of hasp and jump knot, the jump knot other end have with electromagnetic release, bimetallic strip linkage complex tripping part, electromagnetic release, bimetallic strip can drive the action of tripping part respectively, and realize the unblock of hasp and jump knot.
2. The operating mechanism of a circuit breaker according to claim 1, wherein: the handle on be provided with the pivot hole that is connected with the connecting rod, connecting rod one end alternate in the pivot hole, the hasp on be provided with connecting rod matched with drive hole, the connecting rod other end have pass the drive hole and extend the guide bar portion in the guide hole that slides of casing, guide bar portion of connecting rod follow the handle action and slide guide hole in reciprocating.
3. Operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the locking groove is a cambered surface groove, and one end of the jump buckle is provided with a cambered surface bulge bearing surface matched with the locking groove.
4. Operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the novel touch screen is characterized in that one end of the lock catch is provided with a connecting hole matched with the U-shaped connecting rod, the touch screen frame is provided with a through hole matched with the U-shaped connecting rod, a guide groove is formed in the position, corresponding to the through hole, in the shell, one end of the U-shaped connecting rod is connected in the connecting hole, the other end of the U-shaped connecting rod penetrates through the through hole and extends in the guide groove, and the other end of the U-shaped connecting rod moves along with the lock catch and reciprocates in the guide groove.
5. Operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the contact frame on be provided with the location boss, the moving contact on be provided with location boss matched with locating hole, the location boss alternate in the locating hole, the location boss on be provided with the contact torsional spring, moving contact correspond location boss one side department and be provided with first spacing groove, second spacing groove respectively, contact torsional spring both ends block respectively on first spacing groove, second spacing groove.
6. Operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the contact frame is provided with a positioning column matched with the spring, one end of the spring is clamped on the positioning column, and the other end of the spring is clamped in a clamping groove in the shell.
7. The operating mechanism of a circuit breaker of claim 6, wherein: the contact frame is characterized in that a positioning groove is formed in one side of the contact frame, corresponding to the positioning column, of the shell, a positioning column is arranged in the position, corresponding to the positioning groove, of the shell, the positioning column is inserted into the positioning groove, and the contact frame is in rotary connection fit with the positioning column.
8. Operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the shell in correspond to jump and detain department and be provided with the locating shaft, the locating shaft alternate in the location shaft hole at jump detain middle part, the torsional spring suit on the locating shaft, torsional spring one end conflict in the joint inslot of jump detain, the torsional spring other end conflict on the spacing piece of shell.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311493096.5A CN117292991A (en) | 2023-11-09 | 2023-11-09 | Operating mechanism of circuit breaker |
| PCT/CN2024/110224 WO2025097893A1 (en) | 2023-11-09 | 2024-08-06 | Operating mechanism of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311493096.5A CN117292991A (en) | 2023-11-09 | 2023-11-09 | Operating mechanism of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117292991A true CN117292991A (en) | 2023-12-26 |
Family
ID=89257374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311493096.5A Pending CN117292991A (en) | 2023-11-09 | 2023-11-09 | Operating mechanism of circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117292991A (en) |
| WO (1) | WO2025097893A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025097893A1 (en) * | 2023-11-09 | 2025-05-15 | 上海永继电气股份有限公司 | Operating mechanism of circuit breaker |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4908181B2 (en) * | 2006-12-22 | 2012-04-04 | Ｉｄｅｃ株式会社 | Circuit breaker |
| CN102881531B (en) * | 2012-09-13 | 2015-02-25 | 浙江天正电气股份有限公司 | Easily-assembled small circuit breaker and operating mechanism thereof |
| CN207338281U (en) * | 2017-11-03 | 2018-05-08 | 环宇集团浙江高科股份有限公司 | A kind of miniature circuit breaker |
| CN109243932B (en) * | 2018-10-11 | 2024-04-09 | 上海永继电气股份有限公司 | Breaker operating system |
| CN220933990U (en) * | 2023-11-09 | 2024-05-10 | 上海永继电气股份有限公司 | Operating mechanism of circuit breaker |
| CN117292991A (en) * | 2023-11-09 | 2023-12-26 | 上海永继电气股份有限公司 | Operating mechanism of circuit breaker |
-
2023
- 2023-11-09 CN CN202311493096.5A patent/CN117292991A/en active Pending
-
2024
- 2024-08-06 WO PCT/CN2024/110224 patent/WO2025097893A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025097893A1 (en) * | 2023-11-09 | 2025-05-15 | 上海永继电气股份有限公司 | Operating mechanism of circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2025097893A1 (en) | 2025-05-15 |
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