CN211929416U

CN211929416U - Miniature circuit breaker with self-locking structure

Info

Publication number: CN211929416U
Application number: CN202020800945.2U
Authority: CN
Inventors: 汤凌宾
Original assignee: Wuxi Jianling Electrical Appliance Co ltd
Current assignee: Wuxi Jianling Electrical Appliance Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-11-13
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a miniature circuit breaker with self-locking structure, comprising a main body, the front end at both ends is fixed to be provided with the installing port about the main part, the left side movable mounting of main part front end has the switch, the top of switch is located the front end fixed mounting of main part has the visor, the front end of main part is located the right side fixed mounting of switch has the voltmeter, the inside upper portion fixed mounting of main part has the upper end, the left end fixed mounting at upper end has static contactor, static contactor's lower extreme movable mounting has movable contactor, movable contactor's below is located the right-hand member fixedly connected with hasp of switch, the lower extreme fixed mounting of hasp has the electro-magnet, the below of electro-magnet is located the inside fixed mounting of main part has lower terminal. The miniature circuit breaker with the self-locking structure can be automatically locked after the circuit breaker is automatically tripped and opened, and can only be automatically disconnected through short circuit or undervoltage of an electromagnet inside the circuit breaker.

Description

Miniature circuit breaker with self-locking structure

Technical Field

The utility model relates to a circuit breaker technical field specifically is a miniature circuit breaker with auto-lock structure.

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 within a specified time, and is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to its use range.

The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, a motor and the like, automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like, parts do not need to be changed after fault current is cut off generally, and the circuit breaker is widely applied at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniature circuit breaker with self-locking structure to it all is exposed on the surface of circuit breaker because of short circuit or undervoltage automatic disconnection back to propose current circuit breaker switch in solving above-mentioned background art, need the manual circuit breaker of opening, and many people can directly open the switch of circuit breaker to the circuit is not ripe in the family, there is great potential safety hazard, if simultaneously at some important electrics at the during operation, probably because external factor causes the circuit breaker switch to close, cause great economic loss's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a miniature circuit breaker with self-locking structure, includes the main part, the front end at both ends is fixed with the installing port about the main part, the left side movable mounting of main part front end has the switch, the top of switch is located the front end fixed mounting of main part has the visor, the front end of main part is located the right side fixed mounting of switch has the voltmeter, the inside upper portion fixed mounting of main part has last terminal, the left end fixed mounting who goes up the terminal has static contactor, static contactor's lower extreme movable mounting has moving contactor, moving contactor's below is located the right-hand member fixedly connected with hasp of switch, the lower extreme fixed mounting of hasp has the electro-magnet, the below of electro-magnet is located the inside fixed mounting of main part has lower terminal.

Preferably, the inside avris fixed mounting that is located the hasp of main part has quick arc control device, go up the terminal and down fixedly connected with connecting wire between the terminal, the connecting wire includes positive terminal and negative terminal, what voltmeter both sides terminal corresponded with positive terminal and negative terminal fixed connection.

Preferably, the fixed buckle that is provided with of right-hand member of switch, the fixed buckle that is provided with down of left end of moving contactor, the inside fixed mounting that the top of buckle is located the main part down has one-way axle, fixedly connected with insulated wire between the right-hand member of one-way axle and the buckle down, fixedly connected with compresses tightly the pole between the left end of one-way axle and the last buckle.

Preferably, a long rod is fixedly arranged at the left end of the one-way shaft, a short rod is fixedly arranged at the right end of the one-way shaft, the pressing rod is fixedly connected with the one-way shaft through the long rod, and the insulating wire is fixedly connected with the one-way shaft through the short rod.

Preferably, the pressing rod is perpendicular to the upper pinch plate, and the pressing rod is perpendicular to the one-way shaft.

Preferably, the one-way shaft is positioned on the inner side of the protective cover, and the long rod and the short rod are both positioned in the middle of the rear side of the protective cover.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the miniature circuit breaker with the self-locking structure, the one-way shaft is installed and connected with the upper pinch plate and the lower pinch plate through the insulating wire, the miniature circuit breaker can be automatically locked after the circuit breaker is automatically tripped and opened, and can only be automatically disconnected through short circuit or undervoltage of an electromagnet inside the circuit breaker, or the miniature circuit breaker can be manually opened or closed after the protective cover is opened, so that the problem that the circuit breaker is opened or closed due to mistaken touch of a switch by external factors under the condition of normal power-on is avoided, and potential safety hazards are caused;

2. according to the miniature circuit breaker with the self-locking structure, the voltmeter is installed and is connected into the upper terminal and the lower terminal through the positive wiring column and the negative wiring column, so that the voltage in a circuit can be stably measured no matter the circuit breaker is started or disconnected, and the circuit breaker is prevented from being mistakenly started in an undervoltage automatic disconnection state to cause circuit damage;

3. the miniature circuit breaker with the self-locking structure has the advantages that the unidirectional shaft is arranged on the inner side of the protective cover, so that the operation end and the power connection end are separated through the shell of the main body. And make it keep away from the wiring end through insulated wire and compress tightly the pole, and then improved the operational safety nature of this circuit breaker greatly.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the three-dimensional structure of the present invention;

FIG. 3 is a schematic sectional view of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the one-way shaft of the present invention;

fig. 5 is a schematic view of the three-dimensional structure of the one-way shaft of the present invention.

In the figure: 1. a main body; 2. an installation port; 3. a switch; 4. a protective cover; 5. a voltmeter; 6. an upper terminal; 7. a static contactor; 8. moving the contactor; 9. a hasp; 10. an electromagnet; 11. a lower terminal; 12. a rapid arc extinguishing device; 13. a connecting wire; 14. a positive terminal post; 15. a negative terminal; 16. an upper buckle plate; 17. a lower buckle plate; 18. a one-way shaft; 19. an insulated wire; 20. a hold down bar; 21. a long rod; 22. a short rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a miniature circuit breaker with self-locking structure, including main part 1, the front end at main part 1 upper and lower both ends is fixed with installing port 2, the left side movable mounting of main part 1 front end has switch 3, the front end fixed mounting that the top of switch 3 is located main part 1 has visor 4, the right side fixed mounting that the front end of main part 1 is located switch 3 has voltmeter 5, the inside upper portion fixed mounting of main part 1 has last terminal 6, the left end fixed mounting who goes up terminal 6 has static contactor 7, the lower extreme movable mounting of static contactor 7 has movable contactor 8, the lower position of movable contactor 8 is located switch 3's right-hand member fixedly connected with hasp 9, the lower extreme fixed mounting of hasp 9 has electro-magnet 10, the lower position of electro-magnet 10 is located main part 1's inside fixed mounting.

Further, the inside of main part 1 is located the avris fixed mounting of hasp 9 and is had quick arc control device 12, go up fixedly connected with connecting wire 13 between terminal 6 and the lower terminal 11, connecting wire 13 includes positive terminal 14 and negative terminal 15, voltmeter 5 both sides terminal correspond with positive terminal 14 and negative terminal 15 fixed connection, through installation voltmeter 5, and make it insert last terminal 6 and lower terminal 11 through positive terminal 14 and negative terminal 15, no matter the voltage in the survey circuit that can both be comparatively stable under this circuit breaker opens or the condition of disconnection, open the circuit breaker by mistake under the state of avoiding undervoltage automatic disconnection, cause the damage of circuit.

Further, the right end of the switch 3 is fixedly provided with an upper pinch plate 16, the left end of the movable contactor 8 is fixedly provided with a lower pinch plate 17, a one-way shaft 18 is fixedly arranged inside the main body 1 above the lower pinch plate 17, an insulating wire 19 is fixedly connected between the right end of the one-way shaft 18 and the lower pinch plate 17, a pressing rod 20 is fixedly connected between the left end of the one-way shaft 18 and the upper pinch plate 16, the one-way shaft 18 is installed and is connected with the upper pinch plate 16 and the lower pinch plate 17 through the insulating wire 19 and the pressing rod 20, the automatic tripping and automatic locking after the opening of the circuit breaker can be realized, the short circuit or the automatic tripping of the undervoltage of the internal electromagnet 10 of the circuit breaker can be realized only through the installation, or the protection cover 4 can be manually opened or closed again, and further, the condition that the circuit breaker is opened or closed due to the.

Further, the left end of one-way shaft 18 is fixed and is provided with stock 21, the fixed quarter butt 22 that is provided with of right-hand member of one-way shaft 18, compress tightly pole 20 and pass through

stock

21 and 18 fixed connection of one-way shaft, insulated wire 19 passes through

quarter butt

22 and 18 fixed connection of one-way shaft, insulated wire 19 adopts the fire prevention nylon material, compress tightly pole 20 and adopt ebonite, can improve the insulating properties of this circuit breaker manual operation end greatly when guaranteeing life, the operator's of protection personal safety.

Furthermore, the pressing rod 20 is perpendicular to the upper buckle plate 16, the pressing rod 20 is perpendicular to the one-way shaft 18, the pressing rod 20 is perpendicular to the upper buckle plate 16, and the pressing rod 20 is perpendicular to the one-way shaft 18, so that the pressing rod 20 can stably press the upper buckle plate 16, and the self-locking device is stable all the time.

Further, the one-way shaft 18 is located inside the protective cover 4, and the long bar 21 and the short bar 22 are located at the middle of the rear side of the protective cover 4, and the operation end and the power receiving end are separated by the housing of the main body 1 by installing the one-way shaft 18 inside the protective cover 4. And is far away from the terminal through the insulated wire 19 and the pressing rod 20, thereby greatly improving the operation safety of the circuit breaker.

The working principle is as follows: when the switch 3 is opened, the upper pinch plate 16 is buckled and connected with the lower pinch plate 17, the one-way shaft 18 can press the pressing rod 20 on the upper end of the upper pinch plate 16 through the downward tension force of the insulating wire 19 and the one-way elastic force of the one-way shaft 18, at the moment, the one-way shaft 18 can only be used for pressing the pressing rod 20 on the upper end of the upper pinch plate 16, the one-way shaft 18 can be automatically disconnected through short circuit or undervoltage through the electromagnet 10 inside the circuit breaker, or the protective cover 4 can be opened and closed manually, so that the circuit breaker is prevented from being opened or closed under the condition of normal power-on due to the fact that the switch 3 is touched by mistake by external factors, when the operation is required, the protective cover 4 needs to be opened manually, then the short rod 22 can be pressed manually to realize the opening or closing of the switch 3, the pressing rod 20 is perpendicular to the upper pinch plate 16, the operation end and the power receiving end are separated by the housing of the main body 1 by mounting the one-way shaft 18 inside the protective cover 4. And is far away from the terminal through the insulated wire 19 and the pressing rod 20, thereby greatly improving the operation safety of the circuit breaker.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A miniature circuit breaker with self-locking structure, includes main part (1), its characterized in that: the front ends of the upper end and the lower end of the main body (1) are fixedly provided with mounting ports (2), the left side of the front end of the main body (1) is movably provided with a switch (3), a protective cover (4) is fixedly arranged above the switch (3) and positioned at the front end of the main body (1), a voltmeter (5) is fixedly arranged at the front end of the main body (1) on the right side of the switch (3), an upper terminal (6) is fixedly arranged at the upper part inside the main body (1), a static contactor (7) is fixedly arranged at the left end of the upper terminal (6), the lower end of the static contactor (7) is movably provided with a movable contactor (8), a hasp (9) is fixedly connected with the lower part of the movable contactor (8) at the right end of the switch (3), the lower end of the hasp (9) is fixedly provided with an electromagnet (10), and a lower terminal (11) is fixedly arranged below the electromagnet (10) and positioned in the main body (1).

2. The miniature circuit breaker with self-locking structure as claimed in claim 1, wherein: the inside avris fixed mounting that is located hasp (9) of main part (1) has quick arc extinguishing device (12), go up terminal (6) and fixedly connected with connecting wire (13) down between terminal (11), connecting wire (13) are including positive terminal (14) and negative terminal (15), what voltmeter (5) both sides terminal corresponded with positive terminal (14) and negative terminal (15) fixed connection.

3. The miniature circuit breaker with self-locking structure as claimed in claim 1, wherein: the fixed buckle (16) of being provided with of right-hand member of switch (3), the left end of moving contactor (8) is fixed and is provided with down buckle (17), the inside fixed mounting that the top of buckle (17) is located main part (1) has one-way axle (18) down, fixedly connected with insulated wire (19) between the right-hand member of one-way axle (18) and lower buckle (17), fixedly connected with compression bar (20) between the left end of one-way axle (18) and last buckle (16).

4. The miniature circuit breaker with self-locking structure of claim 3, wherein: the left end of one-way axle (18) is fixed and is provided with stock (21), the fixed quarter butt (22) that is provided with of right-hand member of one-way axle (18), compress tightly pole (20) and pass through stock (21) and one-way axle (18) fixed connection, insulated wire (19) pass through quarter butt (22) and one-way axle (18) fixed connection.

5. The miniature circuit breaker with self-locking structure of claim 4, wherein: the pressing rod (20) is perpendicular to the upper pinch plate (16), and the pressing rod (20) is perpendicular to the one-way shaft (18).

6. The miniature circuit breaker with self-locking structure of claim 4, wherein: the one-way shaft (18) is positioned on the inner side of the protective cover (4), and the long rod (21) and the short rod (22) are both positioned in the middle of the rear side of the protective cover (4).