CN213877972U

CN213877972U - Interlocking mechanism of permanent magnet circuit breaker

Info

Publication number: CN213877972U
Application number: CN202022741824.8U
Authority: CN
Inventors: 赵军
Original assignee: Shaanxi Baokai Electrical Equipment Co ltd
Current assignee: Shaanxi Baokai Electrical Equipment Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-08-03
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a permanent magnetism circuit breaker's interlocking device, it includes: the flame-retardant shell is characterized in that two sides of the inner wall of the flame-retardant shell are respectively and fixedly provided with a first supporting seat, a cylinder and a second supporting seat, one end of the first supporting seat is fixedly connected with an insulating supporting column, the other end of the first supporting seat is fixedly connected with a metal iron column, a first coil is fixedly connected between the insulating supporting column and the metal iron column, one end of the cylinder is provided with a blind hole, the second supporting seat is fixedly connected with an iron U-shaped support, a supporting rod and a second coil are fixedly arranged in the iron U-shaped support, a spring telescopic rod is fixedly arranged on the supporting rod, one end of the spring telescopic rod is fixedly provided with an iron top block, one side of the flame-retardant shell is provided with a second round hole, and one end of a cross rod penetrates through the second round hole; the utility model discloses the rate is operated to the mistake that can effectual reduction manual combined floodgate and separating brake, has avoided the circuit breaker under the condition of the internal member wearing and tearing when long-term the use, can cause the not in place problem of interlocking.

Description

Interlocking mechanism of permanent magnet circuit breaker

Technical Field

The utility model belongs to the technical field of permanent magnet circuit breaker, particularly, relate to a permanent magnet circuit breaker's interlocking device.

Background

The permanent magnetic circuit breaker adopts a bistable internal under-voltage release permanent magnetic mechanism and is integrated with a mechanical manual release, so that manual brake separation is convenient and reliable. The permanent magnetic mechanism opening brake is combined with the spring opening brake, so that the distribution of the opening brake speed is more ideal. Compared with a spring operating mechanism circuit breaker, the movable parts are greatly reduced, so that the reliability and the mechanical life are greatly improved, and the spring operating mechanism circuit breaker is an ideal substitute product for the spring operating mechanism circuit breaker.

The interlocking mechanism is an important component in the permanent magnet circuit breaker, most of the existing permanent magnet circuit breakers adopt bidirectional operation, the misoperation of manual switching-on and switching-off is easily caused during the operation, potential safety hazards exist, the structure of the interlocking mechanism is complex, and the problem of incomplete interlocking can be caused under the condition that internal elements are abraded when the interlocking mechanism is used for a long time. Accordingly, an interlock mechanism for a permanent magnet circuit breaker is provided.

Disclosure of Invention

To the interlocking device of the permanent magnetism circuit breaker that prior art exists, because of the maloperation that causes manual combined floodgate and separating brake easily when the operation, there is the potential safety hazard, and the interlocking device structure is complicated, has the condition of internal component wearing and tearing when long-term the use, can cause the not problem that targets in place of interlocking, the utility model provides a can effectual reduction manual combined floodgate and separating brake's the rate of maloperation to avoided the circuit breaker to cause the interlocking device of the permanent magnetism circuit breaker of the not problem that targets in place of interlocking under the condition of internal component wearing and tearing when long-term the use.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

an interlock mechanism for a permanent magnet circuit breaker, comprising:

the flame-retardant shell, the inner wall one side fixed mounting of flame-retardant shell has first supporting seat and cylinder, and the inner wall opposite side fixed mounting of flame-retardant shell has the second supporting seat, first supporting seat towards fixed mounting has parallel arrangement's insulating support post and metal iron post on the side of second supporting seat, seted up the spout on the insulating support post, just insulating support post with fixedly connected with first coil between the metal iron post, the cylinder towards the one end of second supporting seat seted up the blind hole, second supporting seat towards fixed mounting has the iron U-shaped support on the side of first supporting seat, fixed mounting has bracing piece and second coil in the iron U-shaped support, the second coil is located between bracing piece and the second supporting seat, the position department fixed mounting that faces away from the second coil on the bracing piece has the spring telescopic link, the spring telescopic rod is far away from the supporting rod, and a first round hole is formed in one side wall, provided with the first supporting seat, of the flame-retardant shell;

one end of the cross rod penetrates through the first round hole and extends into the flame-retardant shell, a first inclined plane is arranged at the other end of the cross rod, an iron connecting rod is fixedly connected to the bottom of the cross rod and located inside the flame-retardant shell, the iron connecting rod is perpendicular to the cross rod, and one end, away from the cross rod, of the iron connecting rod is slidably mounted in the sliding groove;

one end of the lever penetrates through the iron connecting rod and is inserted into the blind hole;

the insulating casing, insulating casing fixed mounting is in on the lateral wall of fire-retardant shell, just the insulating casing cover is established the horizontal pole is equipped with the one end periphery on first inclined plane, the second round hole has been seted up on the insulating casing, it has the button to peg graft in the second round hole, the button stretches into the inside one end of insulating casing is equipped with the second inclined plane, the second inclined plane with first inclined plane is inconsistent.

According to the technical scheme, the interlocking mechanism of the permanent magnet circuit breaker comprises a first supporting seat, a cylinder and a second supporting seat, wherein the first supporting seat is fixedly installed in a flame-retardant shell, a first coil is arranged on the first supporting seat to form an electromagnetic trip device, a second coil is arranged on the first round hole to form an under-voltage trip device, a blind hole is formed in the cylinder, a second round hole is formed in one side of the flame-retardant shell, a cross rod is inserted into the second round hole in a sliding mode, an iron connecting rod is fixedly connected to the cross rod, a lever is inserted into the iron connecting rod to form a lever principle, an insulating shell is fixedly installed on one side of the flame-retardant shell again, a button is inserted into the insulating shell to brake the cross rod, the misoperation rate of manual switching-on and switching-off is effectively reduced, and the problem that the interlocking is not in place due to the fact that internal elements of the circuit breaker are abraded in long-term use is avoided.

Further, the top fixed mounting of fire-retardant shell has last wiring mouth, go up and install the contact in the wiring mouth, the bottom fixed mounting of fire-retardant shell has lower wiring mouth, install down the contact in the lower wiring mouth, go up the wiring mouth and can be connected with external conductor, go up contact fixed mounting in fire-retardant shell, go up the contact and cooperate with lower contact, lower contact can be connected with external conductor, lower contact install on the lever and with the lever seesaw.

Further, the upper contact is fixedly arranged in the flame-retardant shell, the lower contact is fixedly arranged on the lever, the upper contact is fixedly arranged in the flame-retardant shell, the lower contact is arranged on the lever and moves back and forth with the lever, and the upper contact and the lower contact are arranged in a matched mode to form an electrically connected contact.

Further, fixed mounting has the arc of putting out a fire in the fire-retardant shell, put out a fire the arc pass through the wire with first coil electric connection, it has the electric current to put out a fire arc load side, closes the switch, will produce the arc extinguishing chamber, is to keep apart electric arc, prevents the short circuit, has the effect of protection circuit breaker body.

Further, fixed mounting has the stopper on the horizontal pole, the one end of horizontal pole is the inclined plane structure, and the inclined plane structure of horizontal pole one end can cooperate with the bottom inclined plane of button.

Further, the bottom fixed mounting of button has the balancing weight, the bottom of button is the inclined plane structure, and the inclined plane structure of button bottom can cooperate with the inclined plane structure of horizontal pole one end.

Further, fire-retardant shell fixed mounting is on the rectangle fixing base, and the rectangle fixing base can make circuit breaker body easy to assemble.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses a fixed mounting has first supporting seat in fire-retardant shell, cylinder and second supporting seat, it forms the electromagnetic trip ware to set up first coil on first supporting seat, it forms the under voltage release to set up the second coil on first round hole, and set up the blind hole on the cylinder, set up the second round hole in one side of fire-retardant shell, it has the horizontal pole to peg graft in the second round hole slip, fixed connection has the iron connecting rod on the horizontal pole, it has the lever to form the lever principle to peg graft on the iron connecting rod, once more at one side fixed mounting insulating casing of fire-retardant shell, it has the button to brake the horizontal pole to peg graft in the insulating casing, the manual floodgate of effectual reduction and the maloperation rate of separating brake, and avoided the circuit breaker under the condition of inner member wearing and tearing when long-term use, can cause the not problem that targets in place of interlocking.

Drawings

Fig. 1 is a schematic cross-sectional view of an interlocking mechanism of a permanent magnet circuit breaker according to the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

fig. 3 is a schematic structural diagram of the interlocking mechanism of the permanent magnet circuit breaker of the present invention.

The notation in the figure is: 1-flame-retardant shell, 2-extinguishing arc, 3-insulating support column, 4-first support seat, 5-first coil, 6-cylinder, 7-blind hole, 8-counterweight block, 9-second round hole, 10-button, 11-first round hole, 12-limiting block, 13-metal iron column, 14-upper wiring port, 15-lever, 16-cross bar, 17-upper contact, 18-rectangular fixed seat, 19-second support seat, 20-lower contact, 21-lower wiring port, 22-chute, 23-iron connecting rod, 24-iron top block, 25-support rod, 26-spring telescopic rod, 27-iron U-shaped support, 28-second coil and 29-insulating shell.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 3, an interlocking mechanism of a permanent magnet circuit breaker includes a flame-retardant housing 1, a cross bar 16, a lever 15, and an insulating housing 29.

The flame-retardant shell 1 is fixedly arranged on a rectangular fixed seat 18, the rectangular fixed seat 18 can facilitate the installation of a circuit breaker body, one side of the inner wall of the flame-retardant shell 1 is fixedly provided with a first supporting seat 4 and a cylinder 6, the other side of the inner wall of the flame-retardant shell 1 is fixedly provided with a second supporting seat 19, one side of the first supporting seat 4 facing the second supporting seat 19 is fixedly provided with an insulating supporting column 3 and a metal iron column 13 which are arranged in parallel, the insulating supporting column 3 is provided with a chute 22, a first coil 5 is fixedly connected between the insulating supporting column 3 and the metal iron column 13, one end of the cylinder 6 facing the second supporting seat 19 is provided with a blind hole 7, one side of the second supporting seat 19 facing the first supporting seat 4 is fixedly provided with an iron U-shaped bracket 27, a supporting rod 25 and a second coil 28 are fixedly arranged in the iron U-shaped bracket 27, and the second coil 28 is positioned between the supporting rod 25 and the second supporting seat 19, a spring telescopic rod 26 is fixedly installed at a position, back to the second coil 28, of the supporting rod 25, an iron top block 24 is fixedly installed at one end, far away from the supporting rod 25, of the spring telescopic rod 26, a first round hole 11 is formed in one side wall, provided with the first supporting seat 4, of the flame-retardant shell 1, an upper wiring port 14 is fixedly installed at the top of the flame-retardant shell 1, an upper contact 17 is installed in the upper wiring port 14, a lower wiring port 21 is fixedly installed at the bottom of the flame-retardant shell 1, a lower contact 20 is installed in the lower wiring port 21, the upper wiring port 21 can be connected with an external lead, the upper contact 17 is fixedly installed in the flame-retardant shell 1, the upper contact 17 is matched with the lower contact 20, the lower contact 20 can be connected with the external lead, the lower contact 20 is installed on the lever 15 and moves back and forth with the lever 15, the upper contact 17 is fixedly installed in the flame-retardant shell 1, and the lower contact 20 is fixedly installed on the lever 15, go up contact 17 fixed mounting in fire-retardant shell 1, lower contact 20 is installed on lever 15 and with lever 15 seesaw, go up contact 17 and lower contact 20 and cooperate the setting, form electric connection's contact, fixed mounting has the arc 2 of putting out a fire in fire-retardant shell 1, the arc 2 of putting out a fire passes through wire and first coil 5 electric connection, 2 load sides of arc of putting out a fire have electric current, close the switch, will produce the arc explosion chamber, be the electric arc isolation, prevent the short circuit, have the effect of protection circuit breaker body.

The one end of horizontal pole 16 runs through first round hole 11 and stretches into fire-retardant shell 1's inside, and the other end of horizontal pole 16 is equipped with first inclined plane, the bottom fixed connection of horizontal pole 16 has iron connecting rod 23, iron connecting rod 23 is located fire-retardant shell 1's inside, and iron connecting rod 23 perpendicular to horizontal pole 16 sets up, the one end slidable mounting that horizontal pole 16 was kept away from to iron connecting rod 23 is in spout 22, fixed mounting has stopper 12 on horizontal pole 16, the one end of horizontal pole 16 is the inclined plane structure, the inclined plane structure of horizontal pole 16 one end can cooperate with the bottom inclined plane of button 10.

One end of the lever 15 penetrates through the iron connecting rod 23 and is inserted into the blind hole 7.

Insulating casing 29 fixed mounting is on the lateral wall of fire-retardant shell 1, and insulating casing 29 covers the one end periphery of establishing at horizontal pole 16 and being equipped with first inclined plane, second round hole 9 has been seted up on the insulating casing 29, it has button 10 to peg graft in the second round hole 9, the bottom fixed mounting of button 10 has balancing weight 8, the bottom of button 10 is the inclined plane structure, the inclined plane structure of button 10 bottom can cooperate with the inclined plane structure of horizontal pole 16 one end, the button 10 stretches into the inside one end of insulating casing 29 and is equipped with the second inclined plane, the second inclined plane is inconsistent with first inclined plane.

The working principle is as follows: firstly, leads meeting national standards are respectively electrically connected with an upper wiring port 14 and a lower wiring port 21 at two ends of a flame-retardant shell 1, an insulating shell 29 is fixedly installed at one side of the flame-retardant shell 1, a button 10 is inserted in the insulating shell 29, the bottom of the button 10 is an inclined plane structure and is matched with an inclined plane structure at one end of a cross rod 16, a first supporting seat 4, a cylinder 6 and a second supporting seat 19 are fixedly installed in the flame-retardant shell 1, a first coil 5 is arranged on the first supporting seat 4 to form an electromagnetic trip, a second coil 28 is arranged on the second supporting seat 19 to form an undervoltage trip, an upper contact 17 is fixedly installed in the flame-retardant shell 1, a lower contact 20 is installed on a lever 15, the upper contact 17 and the lower contact 20 form a matched electrical contact, the cross rod 16 is pressed backwards after the button 10 is pressed, the cross rod 16 drives an iron connecting rod 23 to move backwards, the iron connecting rod 23 is contacted with an iron top block 24 and overcomes the elasticity of a spring telescopic rod 26 and is adsorbed on the iron top block 24, when too big through the circuit breaker electric current, the electromagnetism release forms the magnetic force that is greater than iron kicking block 24 and adsorbs iron connecting rod 23 to metal iron post 13 on, come the open circuit, the one end protrusion in first round hole 9 of button 10 this moment, when passing through the circuit breaker electric current when little, the produced magnetic force of iron U-shaped support 27 is overcome to spring telescopic link 26, bounce iron kicking block 24 and push up iron connecting rod 23 forward, come the protection circuit, the one end protrusion in first round hole 9 of button 10 this moment.

In conclusion, the insulating shell 29 is fixedly installed on one side of the flame-retardant shell 1, the button 10 is inserted in the insulating shell 29, the bottom of the button 10 is in an inclined plane structure and is matched with the inclined plane structure at one end of the cross rod 16, the misoperation rate of manual switching on and switching off is effectively reduced, and the problem that interlocking is not in place due to the fact that internal elements of the circuit breaker are abraded when the circuit breaker is used for a long time is solved.

It is worth mentioning that: the fire extinguishing arc 2 is made of iron sheets, the flame-retardant shell 1 is made of plastic injection molding added with antimony trioxide flame retardant, and the insulating shell 29 is made of plastic injection molding.

The interlock mechanism of the permanent magnet circuit breaker provided by the interlock mechanism of the permanent magnet circuit breaker is described in detail above. The description of the specific embodiments is only for the purpose of helping to understand the method of interlocking mechanism of the permanent magnet circuit breaker and the core idea thereof. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the interlock mechanism of the permanent magnet circuit breaker without departing from the principle of the interlock mechanism of the permanent magnet circuit breaker, and these improvements and modifications also fall within the protection scope of the interlock mechanism of the permanent magnet circuit breaker.

Claims

1. An interlock mechanism for a permanent magnet circuit breaker, comprising:

flame-retardant shell (1), inner wall one side fixed mounting of flame-retardant shell (1) has first supporting seat (4) and cylinder (6), just the inner wall opposite side fixed mounting of flame-retardant shell (1) has second supporting seat (19), first supporting seat (4) orientation fixed mounting has parallel arrangement's insulating support post (3) and metal iron post (13) on the side of second supporting seat (19), spout (22) have been seted up on insulating support post (3), just insulating support post (3) with fixedly connected with first coil (5) between metal iron post (13), cylinder (6) orientation blind hole (7) have been seted up to the one end of second supporting seat (19), second supporting seat (19) orientation fixed mounting has iron U-shaped support (27) on the side of first supporting seat (4), fixed mounting has bracing piece (25) and second coil (28) in iron U-shaped support (27), the second coil (28) is positioned between the supporting rod (25) and the second supporting seat (19), a spring telescopic rod (26) is fixedly installed at a position, back to the second coil (28), on the supporting rod (25), an iron top block (24) is fixedly installed at one end, far away from the supporting rod (25), of the spring telescopic rod (26), and a first round hole (11) is formed in one side wall, provided with the first supporting seat (4), of the flame-retardant shell (1);

one end of the cross rod (16) penetrates through the first round hole (11) and extends into the flame-retardant shell (1), a first inclined plane is arranged at the other end of the cross rod (16), an iron connecting rod (23) is fixedly connected to the bottom of the cross rod (16), the iron connecting rod (23) is located inside the flame-retardant shell (1), the iron connecting rod (23) is perpendicular to the cross rod (16), and one end, far away from the cross rod (16), of the iron connecting rod (23) is slidably mounted in the sliding groove (22);

the lever (15), one end of the lever (15) runs through the iron connecting rod (23) and is inserted into the blind hole (7);

insulating casing (29), insulating casing (29) fixed mounting is in on the lateral wall of fire-retardant shell (1), just insulating casing (29) cover is established horizontal pole (16) are equipped with the one end periphery on first inclined plane, second round hole (9) have been seted up on insulating casing (29), it has button (10) to peg graft in second round hole (9), button (10) stretch into the inside one end of insulating casing (29) is equipped with the second inclined plane, the second inclined plane with first inclined plane is inconsistent.

2. The interlock mechanism of the permanent magnet circuit breaker according to claim 1, wherein: the top of fire-retardant shell (1) is equipped with wiring mouth (14), go up and install contact (17) in wiring mouth (14), the bottom of fire-retardant shell (1) is equipped with down wiring mouth (21), install down contact (20) in lower wiring mouth (21), down contact (20) with it cooperatees the setting to go up contact (17).

3. The interlock mechanism of the permanent magnet circuit breaker according to claim 2, wherein: the upper contact (17) is fixedly arranged in the flame-retardant shell (1), and the lower contact (20) is fixedly arranged on the lever (15).

4. The interlock mechanism of the permanent magnet circuit breaker according to claim 1, wherein: the fire-retardant shell (1) internal fixed mounting has the arc of putting out a fire (2), put out a fire arc (2) through the wire with first coil (5) electric connection.

5. The interlock mechanism of the permanent magnet circuit breaker according to claim 1, wherein: a limiting block (12) is fixedly mounted on the cross rod (16), and the limiting block (12) is located inside the flame-retardant shell (1).

6. The interlock mechanism of the permanent magnet circuit breaker according to claim 1, wherein: the button (10) is fixedly provided with a balancing weight (8), and the balancing weight (8) is positioned inside the insulating shell (29).

7. The interlock mechanism of the permanent magnet circuit breaker according to claim 1, wherein: and the side surface of the flame-retardant shell (1) far away from the insulating shell (29) is fixedly arranged on a rectangular fixed seat (18).