CN212322942U

CN212322942U - Miniature circuit breaker with thermal triggering fine adjustment mechanism

Info

Publication number: CN212322942U
Application number: CN202020800967.9U
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: 2021-01-08
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a miniature circuit breaker with thermal trigger fine-tuning, comprising a main body, the front end movable mounting of main part has the switch, the upper end fixed mounting of main part has last terminal, the lower extreme fixed mounting of main part has lower terminal, the inside upper portion fixed mounting of main part has last terminal, the inside lower part fixed mounting of main part has lower terminal, go up fixedly connected with connective bar between terminal and the lower terminal, the rear end of switch is located the inside fixed mounting of main part has the contactor, the below of contactor is located the rear end fixed mounting of switch has the hasp, the inside left lower part fixed mounting of main part has temperature trigger device, the upper right side of temperature trigger device is located the inside fixed mounting of main part has fine setting device. This miniature circuit breaker with hot trigger fine-tuning can realize that the circuit is short for a short time undulant finely tunes, and the effect of the direct outage of circuit short circuit does not have the exposed phenomenon of wire simultaneously in the insulation, and the security is high.

Description

Miniature circuit breaker with thermal triggering fine adjustment mechanism

Technical Field

The utility model relates to a relay technical field specifically is a miniature circuit breaker with thermal trigger fine-tuning.

Background

The circuit 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.

The circuit breaker generally comprises contact system, arc extinguishing system, operating device, release, shell etc. traditional circuit breaker all can break off the circuit when the circuit fluctuates or the trouble takes place, but certain fluctuation takes place in the circuit and can not cause the damage to commonly used electrical apparatus basically, if once fluctuate the break circuit can cause great loss, and the wiring end of current circuit breaker has partly to expose outside, very easily causes the incident.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniature circuit breaker with thermal-triggering fine-tuning to propose traditional circuit breaker and all can the open circuit when the circuit fluctuates or breaks down in solving above-mentioned background art, nevertheless take place certain undulant can not lead to the fact the damage to electrical apparatus commonly used basically in the circuit, if in case undulant just open circuit can lead to the fact great loss, the wiring end of current circuit breaker has partly to expose in addition in the outside, very easily causes the problem of incident.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a miniature circuit breaker with thermal trigger fine-tuning, includes the main part, the front end movable mounting of main part has the switch, the upper end fixed mounting of main part has last terminal, the lower extreme fixed mounting of main part has lower terminal, the inside upper portion fixed mounting of main part has last terminal, the inside lower part fixed mounting of main part has lower terminal, go up fixedly connected with connective bar between terminal and the lower terminal, the rear end of switch is located the inside fixed mounting of main part has the contactor, the rear end fixed mounting that the below of contactor is located the switch has the hasp, the inside left lower part fixed mounting of main part has temperature trigger device, the inside fixed mounting that the upper right side of temperature trigger device is located the main part has fine setting device.

Preferably, temperature trigger device's top fixed mounting has the ejector pin, the ejector pin is the L type, the left end and the hasp fixed connection of ejector pin, the middle part fixedly connected with connecting rod of ejector pin upper end, the connecting rod is the L type, the right-hand member and the micromatic setting fixed connection of connecting rod.

Preferably, the outer end of the temperature trigger device is fixedly provided with a coil, the temperature trigger device is fixedly provided with an air bag in the interior, the air bag is filled with gas, the upper portion of the air bag is movably provided with a pneumatic piston, and the upper end of the pneumatic piston is tightly attached to the bottom end of the ejector rod.

Preferably, the fine-tuning device is fixedly installed in the middle of the connecting rod, the connecting rod is electrically connected with the fine-tuning device, the fine-tuning device comprises a slide rheostat, an insulating layer is fixedly arranged on the upper portion of the slide rheostat, a slide sheet is movably installed at the left end of the slide rheostat, and the left end of the slide sheet is fixedly connected with the connecting rod.

Preferably, it is the homogeneous structure with lower terminal to go up the terminal, the front end movable mounting who goes up the terminal has the clamp plate, both ends are fixed and are provided with the slider about the clamp plate, the fixed spout that is provided with in junction of main part and slider, spout and slider looks adaptation, the rear end of clamp plate is fixed with the front end of main part and is provided with the pin hole, the pin hole is semi-circular.

Preferably, the rear end of the pressing plate and the front end of the main body are fixedly provided with an insulating pad, and the insulating pad is matched with the lead port.

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

1. according to the miniature circuit breaker with the thermal trigger fine adjustment mechanism, the temperature trigger device and the fine adjustment device can be linked through the two L-shaped connecting device ejector rods and the connecting rod, so that the temperature trigger device and the fine adjustment device work in a linkage manner, and the effects that the circuit fluctuates for a short time to perform fine adjustment and the circuit is short-circuited to be directly powered off are further achieved;

2. when the circuit is in short-circuit fault, the sliding sheet is directly connected to the insulating layer and turns off the whole circuit, and meanwhile, the connecting rod device of the ejector rod and the connecting rod is connected with the switch, so that the circuit can be maintained after power failure and cannot automatically rebound to reconnect the circuit;

3. this miniature circuit breaker with fine-tuning is triggered to heat can connect the outside to connect the downside that introduces the clamp plate from the lead wire mouth and shelter from, avoids the wire to expose externally to cause the accident, through the installation insulating pad, can further improve the device's insulating nature, and the material of insulating pad is soft rubber bonding installation simultaneously, and the electric arc that produces when the circuit operation hits and can not damage the main part, and then has improved the life of this circuit breaker greatly.

Drawings

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

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is a schematic view of the sectional structure of the temperature trigger device of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the fine adjustment device of the present invention;

fig. 5 is a schematic view of the three-dimensional structure of the pressing plate of the present invention.

In the figure: 1. a main body; 2. a switch; 3. an upper binding post; 4. connecting a wiring column downwards; 5. an upper terminal; 6. a lower terminal; 7. a connecting rod; 8. a contactor; 9. a hasp; 10. a temperature trigger device; 11. a fine adjustment device; 12. a top rod; 13. a connecting rod; 14. a coil; 15. an air bag; 16. a pneumatic piston; 17. a slide rheostat; 18. an insulating layer; 19. sliding blades; 20. pressing a plate; 21. a slider; 22. a chute; 23. a wire leading port; 24. an insulating pad.

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 thermal trigger fine-tuning, including main part 1, the front end movable mounting of main part 1 has switch 2, the upper end fixed mounting of main part 1 has last terminal 3, the lower extreme fixed mounting of main part 1 has lower terminal 4, the inside upper portion fixed mounting of main part 1 has last terminal 5, the inside lower part fixed mounting of main part 1 has lower terminal 6, go up fixedly connected with connective bar 7 between terminal 5 and the lower terminal 6, the inside fixed mounting that the rear end of switch 2 is located main part 1 has contactor 8, the rear end fixed mounting that the below of contactor 8 is located switch 2 has hasp 9, the inside left lower part fixed mounting of main part 1 has temperature trigger device 10, the inside fixed mounting that the upper right side of temperature trigger device 10 is located main part 1 has fine setting device 11.

Further, top fixed mounting of temperature trigger device 10 has ejector pin 12, ejector pin 12 is the L type, the left end and the hasp 9 fixed connection of ejector pin 12, middle part fixedly connected with connecting rod 13 of ejector pin 12 upper end, connecting rod 13 is the L type, the right-hand member and the micromatic setting 11 fixed connection of connecting rod 13, can be with linking up between temperature trigger device 10 and the micromatic setting 11 through two connecting device ejector pins 12 and the connecting rod 13 that are the L type, make its linkage work, and then realize that the circuit is short for a short time undulant finely tunes, the effect of the direct outage of circuit short circuit.

Further, a coil 14 is fixedly mounted at the outer end of the temperature trigger device 10, an air bag 15 is fixedly arranged inside the temperature trigger device 10, the air bag 15 is filled with gas, a pneumatic piston 16 is movably mounted at the upper part inside the air bag 15, the upper end of the pneumatic piston 16 is tightly attached to the bottom end of the ejector rod 12, the air bag 15 is mounted, the coil 14 is wound outside the air bag 15, the coil 14 is abnormal and can generate heat when the circuit fluctuates, at the moment, the gas filled in the air bag 15 can be heated, and the pneumatic piston 16 rises and triggers the ejector rod 12 to trigger the fine adjustment device 11.

Furthermore, a fine-tuning device 11 is fixedly arranged in the middle of the connecting rod 7, the connecting rod 7 is electrically connected with the fine-tuning device 11, the fine-tuning device 11 comprises a slide rheostat 17, an insulating layer 18 is fixedly arranged on the upper portion of the slide rheostat 17, a slide sheet 19 is movably arranged at the left end of the slide rheostat 17, the left end of the slide sheet 19 is fixedly connected with the connecting rod 13, when the temperature trigger device 10 is activated, the connecting rod 13 drives the sliding piece 19 to slide upwards, and increases the resistance between the upper terminal 5 and the lower terminal 6, when the circuit fluctuates for a short time, the circuit is not required to be powered off, only the resistance is required to be temporarily increased for protection, when the short-circuit fault of the circuit is continued, the sliding sheet 19 is directly connected to the insulating layer 18 and cuts off the whole circuit, meanwhile, the connecting rod device of the mandril 12 and the connecting rod 13 is connected with the switch 2, can be kept after power failure, and cannot automatically rebound to reconnect the circuit.

Further, it is the homogeneous structure with terminal 4 down to go up terminal 3, the front end movable mounting of going up terminal 3 has clamp plate 20, both ends are fixed to be provided with slider 21 about clamp plate 20, main part 1 is fixed with spout 22 with the junction of slider 21, spout 22 and slider 21 looks adaptation, the rear end of clamp plate 20 is fixed with port 23 with the front end of main part 1, port 23 is semi-circular, through installing clamp plate 20, and set up port 23 at its junction, can connect the downside that external electricity introduced clamp plate 20 from port 23 and shelter from, avoid the wire to expose externally to cause the accident.

Further, the rear end of clamp plate 20 and the front end fixed mounting of main part 1 have insulating pad 24, insulating pad 24 and the adaptation of lead port 23 looks, through installation insulating pad 24, can further improve the device's insulating nature, insulating pad 24's material is the installation of soft rubber bonding simultaneously, and the electric arc that produces when the circuit operation hits and can not damage main part 1, and then has improved the life of this circuit breaker greatly.

The working principle is as follows: firstly, when the circuit fluctuates, the coil 14 is abnormal and generates heat, at the moment, the gas filled in the air bag 15 is heated, the pneumatic piston 16 rises and triggers the ejector rod 12 to trigger the fine adjustment device 11, after the temperature trigger device 10 is started, the connecting rod 13 can drive the sliding sheet 19 to slide upwards and increase the resistance between the upper terminal 5 and the lower terminal 6, when the circuit fluctuates for a short time, the power-off is not needed, only the resistance is increased for protecting the circuit for a short time, when the circuit has a continuous short-circuit fault, the sliding sheet 19 is directly connected to the insulating layer 18 and the whole circuit is cut off, meanwhile, the connecting rod device of the ejector rod 12 and the connecting rod 13 is connected with the switch 2, the circuit can be kept after the power-off, the circuit can not be automatically rebounded and reconnected, when in wiring, firstly, the pressing plate 20 is loosened through a screw and is discharged through the sliding block 21 and the sliding chute 22, then, the screw is screwed to make the pressing plate 20 contract inwards along the sliding groove 22 through the sliding block 21, meanwhile, the position of the rear end of the lead wire is manually adjusted to make the lead wire completely fit with the lead opening 23, and then the screw is tightened to finish the wiring.

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 a thermally triggered trimming mechanism, comprising a main body (1), characterized in that: a switch (2) is movably arranged at the front end of the main body (1), an upper binding post (3) is fixedly arranged at the upper end of the main body (1), the lower end of the main body (1) is fixedly provided with a lower wiring column (4), the upper part of the interior of the main body (1) is fixedly provided with an upper terminal (5), a lower terminal (6) is fixedly arranged at the lower part in the main body (1), a connecting rod (7) is fixedly connected between the upper terminal (5) and the lower terminal (6), the rear end of the switch (2) is positioned in the main body (1) and is fixedly provided with a contactor (8), a hasp (9) is fixedly arranged below the contactor (8) and positioned at the rear end of the switch (2), a temperature trigger device (10) is fixedly arranged at the left lower part inside the main body (1), the upper right of the temperature trigger device (10) is positioned in the main body (1) and is fixedly provided with a fine adjustment device (11).

2. A miniature circuit breaker having a thermally triggered trimming mechanism according to claim 1, wherein: the temperature trigger device is characterized in that an ejector rod (12) is fixedly mounted above the temperature trigger device (10), the ejector rod (12) is of an L shape, the left end of the ejector rod (12) is fixedly connected with a hasp (9), a connecting rod (13) is fixedly connected to the middle of the upper end of the ejector rod (12), the connecting rod (13) is of an L shape, and the right end of the connecting rod (13) is fixedly connected with a fine adjustment device (11).

3. A miniature circuit breaker having a thermally triggered trimming mechanism according to claim 2, wherein: temperature trigger device (10) outer end fixed mounting has coil (14), the inside fixed gasbag (15) that is provided with of temperature trigger device (10), gasbag (15) inside is flooded, the inside upper portion movable mounting of gasbag (15) has pneumatic piston (16), the upper end of pneumatic piston (16) closely laminates with the bottom of ejector pin (12).

4. A miniature circuit breaker having a thermally triggered trimming mechanism according to claim 3, wherein: vernier device (11) fixed mounting is in the middle part of connective bar (7), connective bar (7) and vernier device (11) electric connection, vernier device (11) are including slide rheostat (17), the fixed insulating layer (18) that is provided with in upper portion of slide rheostat (17), the left end movable mounting of slide rheostat (17) has gleitbretter (19), the left end and connecting rod (13) fixed connection of gleitbretter (19).

5. A miniature circuit breaker having a thermally triggered trimming mechanism according to claim 1, wherein: go up terminal (3) and lower binding post (4) and be the same kind structure, the front end movable mounting who goes up terminal (3) has clamp plate (20), both ends are fixed and are provided with slider (21) about clamp plate (20), main part (1) is fixed with spout (22) with the junction of slider (21), spout (22) and slider (21) looks adaptation, the rear end of clamp plate (20) is fixed with lead wire mouth (23) with the front end of main part (1), lead wire mouth (23) are semi-circular.

6. A miniature circuit breaker having a thermally triggered trimming mechanism according to claim 5 wherein: the rear end of the pressing plate (20) and the front end of the main body (1) are fixedly provided with insulating pads (24), and the insulating pads (24) are matched with the lead openings (23).