CN215496597U - Small-sized circuit breaker - Google Patents
Small-sized circuit breaker Download PDFInfo
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- CN215496597U CN215496597U CN202122167058.3U CN202122167058U CN215496597U CN 215496597 U CN215496597 U CN 215496597U CN 202122167058 U CN202122167058 U CN 202122167058U CN 215496597 U CN215496597 U CN 215496597U
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- armature
- yoke
- conducting plate
- circuit breaker
- miniature circuit
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Abstract
The utility model relates to a miniature circuit breaker, which comprises a shell, an operating mechanism, an arc extinguishing system, an electromagnetic tripping mechanism and a moving contact, wherein the operating mechanism, the arc extinguishing system, the electromagnetic tripping mechanism and the moving contact are arranged in the shell, the electromagnetic tripping mechanism comprises a magnetic yoke arranged on a current conducting plate, an armature rotatably arranged at one end of the magnetic yoke and a torsion spring arranged between the magnetic yoke and the armature, one end of the armature is provided with a shifting part matched with a lock catch of the operating mechanism, the other end of the armature is provided with an attraction part matched with the magnetic yoke, a limit block is arranged in the shell above the attraction part, the attraction part is abutted against the limit block and forms limit matching of the armature and the limit block, the magnetic yoke is provided with an attraction inclined plane matched with the attraction part, and when the attraction part is attracted on the attraction inclined plane, the shifting part acts along with the armature and shifts the lock catch to act. The utility model has the advantages of simple structure, stable and reliable performance and convenient and fast assembly.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a miniature 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, an electromagnetic tripping mechanism, an arc extinguishing system and a conductive system, the electromagnetic tripping mechanism of the existing miniature circuit breaker is complex in structural design, more parts of the electromagnetic tripping mechanism are required, the assembly is more complicated, and the assembly efficiency is lower. Therefore, the miniature circuit breaker has the defects of complex structure, unreliable performance and inconvenient assembly.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a miniature circuit breaker which is simple in structure, stable and reliable in performance and convenient and fast to assemble.
In order to achieve the purpose, the utility model adopts a miniature circuit breaker, which comprises a shell, an operating mechanism, an arc extinguishing system, an electromagnetic tripping mechanism and a moving contact, wherein the operating mechanism, the arc extinguishing system, the electromagnetic tripping mechanism and the moving contact are arranged in the shell, the electromagnetic tripping mechanism comprises a magnetic yoke arranged on the conductive plate, an armature iron rotatably arranged on one end of the magnetic yoke, and a torsion spring arranged between the magnetic yoke and the armature iron, one end of the armature iron is provided with a shifting part matched with the lock catch of the operating mechanism, the other end of the armature iron is provided with an actuation part matched with the magnet yoke, a limiting block is arranged in the shell above the suction part, the suction part is pressed against the limiting block, and the limit matching of the armature iron and the limit block is formed, the magnetic yoke is provided with an attraction inclined plane matched with the attraction part, when the attraction part attracts on the attraction inclined plane, the shifting part moves along with the armature and shifts the lock catch to move.
The beneficial effect of above-mentioned structure is: the electromagnetic tripping mechanism of the miniature circuit breaker is simple in structural design, does not need an electromagnetic coil, is lower in production cost, and is integrated on the conductive plate, so that the electromagnetic tripping mechanism is convenient to modularize and assemble, and the assembly is more convenient. When the miniature circuit breaker works, the magnetic yoke attracts the armature, and the armature drives the latch of the operating mechanism to act, so that tripping and brake opening of the miniature circuit breaker can be realized, and the circuit can be protected. The electromagnetic tripping mechanism is simple in structural design and sensitive in tripping action. Therefore, the miniature circuit breaker has the advantages of simple structure, stable and reliable performance and convenience in assembly.
Particularly, the cross sectional shape of yoke be the U type form, the current conducting plate block in the yoke, and constitute the joint cooperation of current conducting plate and yoke, and be provided with the rivet hole on yoke, the current conducting plate respectively, be provided with the rivet in the rivet hole. The current conducting plate block is in the yoke to be convenient for the assembly of electromagnetic trip mechanism and current conducting plate, the assembly is more convenient.
In particular, one end of the conducting plate bends and extends towards the moving contact and is provided with a contact part, and the contact part is provided with a static contact matched with the moving contact. The stationary contact is integrated on the conductive plate, so that the structure of the miniature circuit breaker is simplified, and the assembly is more convenient.
Particularly, the other end of the current-conducting plate bends and extends towards the direction of the wiring terminal and is provided with a wiring part, and the wiring part is clamped in the wiring terminal and forms clamping fit of the current-conducting plate and the wiring terminal. The current conducting plate adopts the joint cooperation with binding post to be convenient for current conducting plate and binding post's assembly, it is more convenient to assemble, is favorable to improving this miniature circuit breaker's assembly efficiency.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is a perspective view of an electromagnetic trip mechanism according to an embodiment of the utility model.
Detailed Description
As shown in fig. 1 to 3, an embodiment of the utility model is a miniature circuit breaker, including a housing 10, an operating mechanism 12 disposed in the housing 10, an arc extinguishing system 13, an electromagnetic trip mechanism 20, and a movable contact 14 cooperating with the operating mechanism 12, where the electromagnetic trip mechanism 20 includes a magnetic yoke 21 disposed on a conductive plate 15, an armature 22 rotatably disposed on one end of the magnetic yoke 21, and a torsion spring 23 disposed between the magnetic yoke 21 and the armature 22, one end of the armature 22 has a toggle portion 221 cooperating with a latch 121 of the operating mechanism 12, the other end of the armature 22 has an attraction portion 222 cooperating with the magnetic yoke 21, a stopper 101 is disposed in the housing 10 above the attraction portion 222, the attraction portion 222 abuts against the stopper 101 and constitutes a limit cooperation between the armature 22 and the stopper 101, the magnetic yoke 21 has an attraction inclined surface 211 cooperating with the attraction portion 222, when the attraction portion 222 attracts the attraction inclined plane 211, the toggle portion 221 moves along with the armature 22 and toggles the latch 121.
As shown in fig. 2 and 3, the cross-sectional shape of the yoke 21 is U-shaped, the conductive plate 15 is engaged with the yoke 21 to form a snap fit between the conductive plate 15 and the yoke 21, rivet holes 150 are respectively formed in the yoke 21 and the conductive plate 15, and rivets are arranged in the rivet holes 150. The current conducting plate block is in the yoke to be convenient for the assembly of electromagnetic trip mechanism and current conducting plate, the assembly is more convenient. One end of the conductive plate 15 is bent and extended toward the movable contact 14, and a contact portion 151 is formed, and a stationary contact 152 engaged with the movable contact 14 is provided on the contact portion 151. The stationary contact is integrated on the conductive plate, so that the structure of the miniature circuit breaker is simplified, and the assembly is more convenient. The other end of the conductive plate 15 is bent and extended towards the terminal 16 and is formed with a wire connecting portion 153, and the wire connecting portion 153 is clamped in the terminal 16 and forms a clamping fit between the conductive plate 15 and the terminal 16. The current conducting plate adopts the joint cooperation with binding post to be convenient for current conducting plate and binding post's assembly, it is more convenient to assemble, is favorable to improving this miniature circuit breaker's assembly efficiency.
The electromagnetic tripping mechanism of the miniature circuit breaker is simple in structural design, does not need an electromagnetic coil, is lower in production cost, and is integrated on the conductive plate, so that the electromagnetic tripping mechanism is convenient to modularize and assemble, and the assembly is more convenient. When the miniature circuit breaker works, the magnetic yoke attracts the armature, and the armature drives the latch of the operating mechanism to act, so that tripping and brake opening of the miniature circuit breaker can be realized, and the circuit can be protected. The electromagnetic tripping mechanism is simple in structural design and sensitive in tripping action. Therefore, the miniature circuit breaker has the advantages of simple structure, stable and reliable performance and convenience in assembly.
Claims (4)
1. The utility model provides a miniature circuit breaker, includes casing, the operating device of setting in the casing, arc extinguishing system, electromagnetism tripping device, with operating device linkage complex moving contact, its characterized in that: electromagnetic trip mechanism including setting up yoke on the current conducting plate, rotate armature, the torsional spring of setting between yoke and armature of setting up in yoke one end, the one end of armature have with operating device's hasp matched with portion of stirring, the other end of armature have with yoke matched with actuation portion, the casing in the top department that corresponds actuation portion be provided with the stopper, actuation portion contradict on the stopper, and constitute the spacing cooperation of armature and stopper, the yoke on be provided with actuation portion complex actuation inclined plane, actuation portion actuation when on actuation inclined plane, the portion of stirring along with armature action and stir the hasp action.
2. A miniature circuit breaker according to claim 1, wherein: the cross-sectional shape of yoke be the U type form, the current conducting plate block in the yoke, and constitute the joint cooperation of current conducting plate and yoke, and be provided with the rivet hole on yoke, the current conducting plate respectively, be provided with the rivet in the rivet hole.
3. A miniature circuit breaker according to claim 1 or 2, wherein: one end of the conducting plate bends and extends towards the moving contact direction and is provided with a contact part, and the contact part is provided with a static contact matched with the moving contact.
4. A miniature circuit breaker according to claim 1 or 2, wherein: the other end of the current-conducting plate bends to the direction of the wiring terminal and extends to form a wiring part, and the wiring part is clamped in the wiring terminal and forms clamping matching of the current-conducting plate and the wiring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122167058.3U CN215496597U (en) | 2021-09-08 | 2021-09-08 | Small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122167058.3U CN215496597U (en) | 2021-09-08 | 2021-09-08 | Small-sized circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215496597U true CN215496597U (en) | 2022-01-11 |
Family
ID=79768541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122167058.3U Active CN215496597U (en) | 2021-09-08 | 2021-09-08 | Small-sized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215496597U (en) |
-
2021
- 2021-09-08 CN CN202122167058.3U patent/CN215496597U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |