CN212230376U - N utmost point area overload protection's integral type electric leakage circuit breaker - Google Patents
N utmost point area overload protection's integral type electric leakage circuit breaker Download PDFInfo
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- CN212230376U CN212230376U CN202020914630.0U CN202020914630U CN212230376U CN 212230376 U CN212230376 U CN 212230376U CN 202020914630 U CN202020914630 U CN 202020914630U CN 212230376 U CN212230376 U CN 212230376U
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- bimetal
- linkage rod
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- circuit breaker
- middle cover
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Abstract
The utility model discloses an N pole integrated leakage circuit breaker with overload protection, which comprises a middle cover arranged in the middle of a shell, wherein one side of the middle cover is provided with an N pole operating mechanism, and the operating mechanism comprises a moving contact, a lock catch, a jump buckle and a handle which are mutually linked; the moving contact is matched with the N-pole static contact plate; the double-metal arc striking mechanism is arranged on the middle cover and comprises an arc striking plate, double metal and a double metal linkage rod; the arc striking plate is connected with the bimetal, one end of the bimetal linkage rod is connected with the lock catch, and the other end of the bimetal linkage rod is arranged on one side of the bimetal; when the N pole of the circuit breaker has over-current, the bimetal bends towards one side of the bimetal linkage rod and is abutted against the bimetal linkage rod, the bimetal linkage rod is driven to drive the lock catch to rotate, and the moving contact is separated from the N pole static contact plate; the breaker is enabled to realize opening and cut off the power supply of the circuit system; the circuit system is better protected, the electricity utilization safety is improved, and the product performance of the circuit breaker is improved.
Description
Technical Field
The utility model relates to a circuit breaker field, concretely relates to N utmost point area overload protection's integral type electric leakage circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like; has wide application.
Most of the existing integrated residual current circuit breakers are provided with a middle cover only between an L pole and an N pole through the middle part of a shell of the circuit breaker, and the L pole and the N pole are isolated to realize isolation protection; the N pole operating mechanism is not subjected to overload protection, and when the overload condition occurs in the N pole circuit, the breaker cannot be opened in time; bringing potential safety hazards to power utilization.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an N utmost point area overload protection's integral type earth leakage circuit breaker.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an N pole integrated residual current circuit breaker with overload protection comprises a middle cover arranged in the middle of a shell, wherein an N pole operating mechanism is arranged on one side of the middle cover, and the operating mechanism comprises a moving contact, a lock catch, a jump buckle and a handle which are linked with each other; the moving contact is matched with the N-pole static contact plate; the double-metal arc striking mechanism is arranged on the middle cover and comprises an arc striking plate, double metal and a double metal linkage rod;
the arc striking plate is connected with the bimetal, one end of the bimetal linkage rod is connected with the lock catch, and the other end of the bimetal linkage rod is arranged on one side of the bimetal;
when the N pole of the circuit breaker has overcurrent, the bimetal bends towards one side of the bimetal linkage rod and is abutted against the bimetal linkage rod, the bimetal linkage rod is driven to drive the lock catch to rotate, and the moving contact is separated from the N pole static contact plate.
The utility model discloses further set up: and the middle cover is also provided with an adjusting screw for adjusting the relative position of the bimetal and the bimetal linkage rod.
The utility model discloses beneficial effect: the middle cover is provided with a double-gold arc striking mechanism matched with an N-pole operating mechanism of the circuit breaker, when an over-current condition occurs to an N pole, the double-gold linkage rod pushes a double-gold linkage rod, and the double-gold linkage rod enables all parts of the N-pole operating mechanism to be linked through rotating a lock catch and enables a moving contact to be separated from an N-pole static contact plate; the breaker is enabled to realize opening and cut off the power supply of the circuit system; the circuit protection problem of N pole overload is solved, a circuit system is better protected, the electricity utilization safety is improved, and the product performance of the circuit breaker is improved.
Drawings
Fig. 1 is a schematic structural view of an N-pole integrated earth leakage circuit breaker with overload protection according to the present invention;
description of reference numerals: 1. a middle cover; 2. locking; 3. a moving contact; 4. an N-pole stationary contact plate; 5. a dual-gold arc striking mechanism; 51. an arc striking plate; 52. gold and gold; 53. a double-gold linkage rod; 6. and adjusting screws.
Detailed Description
The embodiment of the integrated earth leakage circuit breaker with the N-pole having overload protection according to the present invention will be described in further detail with reference to fig. 1.
An N pole integrated residual current circuit breaker with overload protection comprises a middle cover 1 arranged in the middle of a shell, wherein one side of the middle cover 1 is provided with an N pole operating mechanism, and the operating mechanism comprises a moving contact 3, a lock catch 2, a jump buckle and a handle which are linked with each other; the moving contact 3 is matched with the N-pole static contact plate 4; the tripping buckle, the linkage between the lock catch 2 and the moving contact 3 and the matching between the moving contact 3 and the N-pole static contact plate 4 in the operating mechanism are all matching modes in a common circuit breaker; the double-metal arc striking mechanism 5 is arranged on the middle cover 1, and the double-metal arc striking mechanism 5 comprises an arc striking plate 51, a double metal 52 and a double metal linkage rod 53; the bimetal 52 is a bimetal, and because the coefficients of thermal expansion are different, thermal expansion occurs under the action of overcurrent, and the bimetal 52 bends to a certain extent.
The arc striking plate 51 is connected with the bimetal 52, one end of the bimetal linkage rod 53 is connected with the lock catch 2, and the other end of the bimetal linkage rod is arranged on one side of the bimetal 52;
the middle cover 1 is provided with a double-gold arc striking mechanism 5 matched with an N pole operating mechanism of the circuit breaker, when the N pole of the circuit breaker has over-current, the double-gold 52 bends towards one side of the double-gold linkage rod 53 and is abutted against the double-gold linkage rod, the double-gold linkage rod 53 is driven to drive the lock catch 2 to rotate, and the movable contact 3 is separated from the N pole static contact plate 4; the breaker is enabled to realize opening and cut off the power supply of the circuit system; the circuit protection problem of N pole overload is solved, a circuit system is better protected, the electricity utilization safety is improved, and the product performance of the circuit breaker is improved.
The middle cover 1 is also provided with an adjusting screw 6 for adjusting the relative position of the bimetal 52 and the bimetal linkage rod 53, and the opening capability of the N pole of the circuit breaker under the condition of overcurrent is improved by adjusting the rotatable amplitude of the bimetal linkage rod 53, so that the circuit breaker is more accurate and the safety is improved.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. An N pole integrated residual current circuit breaker with overload protection comprises a middle cover arranged in the middle of a shell, wherein an N pole operating mechanism is arranged on one side of the middle cover, and the operating mechanism comprises a moving contact, a lock catch, a jump buckle and a handle which are linked with each other; the moving contact is matched with the N-pole static contact plate; the method is characterized in that: the double-metal arc striking mechanism is arranged on the middle cover and comprises an arc striking plate, double metal and a double metal linkage rod;
the arc striking plate is connected with the bimetal, one end of the bimetal linkage rod is connected with the lock catch, and the other end of the bimetal linkage rod is arranged on one side of the bimetal;
when the N pole of the circuit breaker has overcurrent, the bimetal bends towards one side of the bimetal linkage rod and is abutted against the bimetal linkage rod, the bimetal linkage rod is driven to drive the lock catch to rotate, and the moving contact is separated from the N pole static contact plate.
2. The integrated leakage circuit breaker with overload protection for the N pole as claimed in claim 1, wherein: and the middle cover is also provided with an adjusting screw for adjusting the relative position of the bimetal and the bimetal linkage rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020914630.0U CN212230376U (en) | 2020-05-27 | 2020-05-27 | N utmost point area overload protection's integral type electric leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020914630.0U CN212230376U (en) | 2020-05-27 | 2020-05-27 | N utmost point area overload protection's integral type electric leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212230376U true CN212230376U (en) | 2020-12-25 |
Family
ID=73929590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020914630.0U Active CN212230376U (en) | 2020-05-27 | 2020-05-27 | N utmost point area overload protection's integral type electric leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212230376U (en) |
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2020
- 2020-05-27 CN CN202020914630.0U patent/CN212230376U/en active Active
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