CN219267582U - Permanent magnet quick-release mechanism - Google Patents
Permanent magnet quick-release mechanism Download PDFInfo
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- CN219267582U CN219267582U CN202223236206.3U CN202223236206U CN219267582U CN 219267582 U CN219267582 U CN 219267582U CN 202223236206 U CN202223236206 U CN 202223236206U CN 219267582 U CN219267582 U CN 219267582U
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- soft magnet
- driving rod
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- magnet
- permanent magnet
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Abstract
The utility model discloses a permanent magnet quick-separating mechanism, which is used for a circuit breaker, wherein the circuit breaker comprises an upper support plate and comprises: the shell is arranged on the upper support plate, and the lower end of the shell is provided with a yielding hole; the lower soft magnet is arranged in the shell and provided with a first through hole; the coil component is arranged in the shell and is fixedly connected with the lower soft magnet; the upper soft magnet is movably arranged in the shell and is provided with a second through hole, an inner cavity for accommodating the coil assembly is formed after the upper soft magnet is attached to the lower soft magnet, and the first through hole is communicated with the second through hole and the abdication hole to form a passage; the driving rod is movably arranged in the passage, the upper end of the driving rod is connected with the upper soft magnet, the lower end of the driving rod is connected with the insulating pull rod, and the upper soft magnet and the driving rod can move up and down together; the elastic piece is arranged on the driving rod, the upper end of the elastic piece is abutted against the upper soft magnet, and the lower end of the elastic piece is abutted against the lower soft magnet. By the arrangement, the coil assembly is charged with forward current and reverse current, so that quick switching-on and switching-off are realized.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a permanent magnet quick-separating mechanism.
Background
At present, most of transmission mechanisms of domestic circuit breakers are common spring operation mechanisms, the spring operation mechanisms occupy large space, more transmission switching parts and high efficiency loss are caused, the switching-on and switching-off time of the circuit breakers is large, and the circuit breakers are easy to fail when capacitive loads, overload and short-circuit currents are switched on and off.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a permanent magnet quick-opening mechanism which can quickly open and close.
According to an embodiment of the utility model, a permanent magnet quick-release mechanism is used for a circuit breaker, wherein the circuit breaker comprises an upper support plate and comprises:
the shell is arranged on the upper support plate, and a yielding hole is formed in the lower end of the shell;
a lower soft magnet disposed in the housing, the lower soft magnet being provided with a first through hole;
a coil assembly disposed in the housing and fixedly connected to the lower soft magnet;
the upper soft magnet is movably arranged in the shell, a second through hole is formed in the upper soft magnet, an inner cavity for accommodating the coil assembly is formed after the upper soft magnet is attached to the lower soft magnet, and the first through hole is communicated with the second through hole and the abdication hole to form a passage;
the driving rod is movably arranged in the passage, the upper end of the driving rod is connected with the upper soft magnet, the lower end of the driving rod is connected with the insulating pull rod, and the upper soft magnet and the driving rod can move up and down together;
and the elastic piece is arranged on the driving rod, the upper end of the elastic piece is abutted against the upper soft magnet, and the lower end of the elastic piece is abutted against the lower soft magnet.
The permanent magnet quick-separating mechanism provided by the embodiment of the utility model has at least the following beneficial effects: the upper soft magnet and the lower soft magnet are electrified to generate magnetism and are attracted together, the driving rod is driven to move downwards to realize closing, after the circuit breaker is powered off, magnetism is still reserved due to the characteristics of the soft magnet, the circuit breaker still keeps a closing state, reverse current is introduced into the coil assembly when opening operation is carried out, the upper soft magnet and the lower soft magnet are separated and demagnetized when a reverse magnetic field is generated, the driving rod moves upwards to realize opening, current is stopped to be introduced at the moment, and the upper soft magnet is always kept separated from the lower soft magnet under the action of the elastic piece, so that the circuit breaker keeps an opening state, and the functions of rapid opening and closing are realized.
According to some embodiments of the utility model, the housing is connected with the lower soft magnet and the lower soft magnet is connected with the coil assembly through bolts.
According to some embodiments of the utility model, the driving device further comprises a limiting piece, wherein the limiting piece is sleeved on the driving rod, a boss is arranged on the driving rod, the upper end of the limiting piece is abutted against the upper soft magnet, the lower end of the limiting piece is abutted against the boss, and the limiting piece is used for limiting the length of the driving rod extending out of the upper soft magnet.
According to some embodiments of the utility model, the lower soft magnetic body is further provided with a step portion, the diameter of the step portion is smaller than that of the boss, and the step portion is used for limiting the upward displacement amount of the driving rod.
According to some embodiments of the utility model, the driving rod is further provided with a mounting hole for connecting with a linkage mechanism.
According to some embodiments of the utility model, the lower end of the driving rod is provided as a stud or a pin.
According to some embodiments of the utility model, the elastic element is provided as a spring or a compression spring.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a permanent magnet quick-separating mechanism according to an embodiment of the present utility model;
fig. 2 is a cross-sectional view of the permanent magnet quick-release mechanism shown in fig. 1.
An upper bracket plate 100;
a housing 200, a relief hole 210;
a lower soft magnetic body 300, a first through hole 310, a step 320;
a coil assembly 400;
upper soft magnetic body 500, second through hole 510;
a driving lever 600, a boss 610;
an elastic member 700;
a stop 800.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 and 2, a permanent magnet quick-disconnect mechanism according to an embodiment of the present utility model is used for a circuit breaker including an upper bracket plate 100, including: the shell 200 is arranged on the upper support plate 100, and a yielding hole 210 is arranged at the lower end of the shell 200; a lower soft magnetic body 300 disposed in the case 200, the lower soft magnetic body 300 being provided with a first through hole 310; a coil assembly 400 disposed in the case 200 and fixedly connected to the lower soft magnetic body 300; the upper soft magnetic body 500 is movably arranged in the shell 200, the upper soft magnetic body 500 is provided with a second through hole 510, an inner cavity for accommodating the coil assembly 400 is formed after the upper soft magnetic body 500 is attached to the lower soft magnetic body 300, and the first through hole 310, the second through hole 510 and the abdication hole 210 are communicated to form a passage; the driving rod 600 is movably arranged in the passage, the upper end of the driving rod 600 is connected with the upper soft magnetic body 500, the lower end of the driving rod 600 is connected with the insulating pull rod, and the upper soft magnetic body 500 can move up and down together with the driving rod 600; the elastic member 700 is disposed on the driving rod 600, and has an upper end abutting against the upper soft magnetic body 500 and a lower end abutting against the lower soft magnetic body 300.
The working principle of the structure is as follows: before closing, under the maintenance action of the elastic element 700, when the upper soft magnet 500 and the lower soft magnet 300 are not contacted, current is introduced into the coil assembly 400, at this time, a magnetic field is generated after the coil assembly 400 is electrified, so that the upper soft magnet 500 and the lower soft magnet 300 are magnetized, and the upper soft magnet 500 and the lower soft magnet 300 are opposite in magnetism, so that the upper soft magnet 500 and the lower soft magnet 300 are attracted together, the driving rod 600 is downwardly displaced under the driving of the upper soft magnet 500, thereby realizing closing operation, after the power is off, the magnetism is not eliminated due to the characteristics of the soft magnet, still keeps a closing state, during opening, reverse current is introduced into the coil assembly 400, at this time, an opposite magnetic field is generated, under the action of the magnetic field, the magnetism of the upper soft magnet 500 and the lower soft magnet 300 originally provided with magnetism is not eliminated, the magnetic poles of the magnetic field are the magnetic field generated newly are the same, and repulsive action is generated, so that the upper soft magnet 500 drives the driving rod 600 to be upwardly displaced, and separated from the lower soft magnet 300, thereby realizing opening, after the demagnetization of the upper soft magnet 500 and the lower soft magnet 300, the reverse current is stopped, under the action of the reverse current, at this time, the upper soft magnet 700 is kept in the opening state, and the elastic element 700 is kept in the opening state.
The permanent magnet quick-separating mechanism provided by the embodiment of the utility model has at least the following beneficial effects: by energizing the coil assembly 400, the upper soft magnet 500 and the lower soft magnet 300 generate magnetism and are attracted together, the driving rod 600 is driven to move downwards to realize switching on, after the switching off, the magnetism is still reserved due to the characteristics of the soft magnet, so that the circuit breaker still keeps a switching on state, when switching off operation is carried out, reverse current is introduced into the coil assembly 400, the upper soft magnet 500 and the lower soft magnet 300 are separated and demagnetized when a reverse magnetic field is generated, the driving rod 600 moves upwards to realize switching off, at the moment, the current introduction is stopped, the upper soft magnet 500 is always separated from the lower soft magnet 300 under the action of the elastic piece 700, and the circuit breaker keeps a switching off state, so that the functions of rapid switching off and switching on are realized.
According to some embodiments of the present utility model, referring to fig. 1 and 2, the case 200 is connected to the lower soft magnetic body 300 and the lower soft magnetic body 300 is connected to the coil assembly 400 by bolts, thereby facilitating installation and later maintenance and disassembly.
According to some embodiments of the present utility model, referring to fig. 1 and 2, the driving rod 600 further includes a limiting member 800, the limiting member 800 is sleeved on the driving rod 600, a boss 610 is disposed on the driving rod 600, an upper end of the limiting member 800 abuts against the upper soft magnet 500, a lower end of the limiting member 800 abuts against the boss 610, and the limiting member 800 is used for limiting a length of the driving rod 600 extending out of the upper soft magnet 500.
According to some embodiments of the present utility model, referring to fig. 1 and 2, the lower soft magnetic body 300 is further provided with a stepped portion 320, the diameter of the stepped portion 320 is smaller than that of the boss 610, the stepped portion 320 serves to limit the upward displacement of the driving rod 600, and the stepped portion 320 cooperates with the boss 610 to limit the upward displacement of the driving rod 600, thereby preventing the driving rod 600 from being pulled out upward.
According to some embodiments of the present utility model, referring to fig. 1 and 2, a mounting hole for connecting a linkage mechanism is further provided on the rod body of the driving rod 600, and by connecting the linkage mechanism, three insulating pull rods can move synchronously, so as to realize synchronous opening and closing.
According to some embodiments of the utility model, the lower end of the drive rod 600 is provided as a stud or pin.
According to some embodiments of the utility model, the elastic member 700 is provided as a spring or compression spring.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (7)
1. A permanent magnet quick-disconnect mechanism for a circuit breaker, the circuit breaker including an upper bracket plate, comprising:
the shell is arranged on the upper support plate, and a yielding hole is formed in the lower end of the shell;
a lower soft magnet disposed in the housing, the lower soft magnet being provided with a first through hole;
a coil assembly disposed in the housing and fixedly connected to the lower soft magnet;
the upper soft magnet is movably arranged in the shell, a second through hole is formed in the upper soft magnet, an inner cavity for accommodating the coil assembly is formed after the upper soft magnet is attached to the lower soft magnet, and the first through hole is communicated with the second through hole and the abdication hole to form a passage;
the driving rod is movably arranged in the passage, the upper end of the driving rod is connected with the upper soft magnet, the lower end of the driving rod is connected with the insulating pull rod, and the upper soft magnet and the driving rod can move up and down together;
and the elastic piece is arranged on the driving rod, the upper end of the elastic piece is abutted against the upper soft magnet, and the lower end of the elastic piece is abutted against the lower soft magnet.
2. The permanent magnet quick release mechanism according to claim 1, wherein the housing is connected to the lower soft magnetic body and the lower soft magnetic body is connected to the coil assembly by bolts.
3. The permanent magnet quick separating mechanism according to claim 1, further comprising a limiting piece, wherein the limiting piece is sleeved on the driving rod, a boss is arranged on the driving rod, the upper end of the limiting piece is abutted against the upper soft magnet, the lower end of the limiting piece is abutted against the boss, and the limiting piece is used for limiting the length of the driving rod extending out of the upper soft magnet.
4. A permanent magnet quick release mechanism according to claim 3, wherein the lower soft magnetic body is further provided with a step portion, the diameter of the step portion is smaller than that of the boss, and the step portion is used for limiting the upward displacement of the driving rod.
5. The permanent magnet quick release mechanism according to claim 1, wherein the driving rod body is further provided with a mounting hole for connecting with a linkage mechanism.
6. The permanent magnet quick release mechanism according to claim 1, wherein the lower end of the driving rod is provided as a stud or a pin.
7. A permanent magnet quick release mechanism according to any one of claims 1 to 6, wherein the resilient member is provided as a spring or compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223236206.3U CN219267582U (en) | 2022-12-02 | 2022-12-02 | Permanent magnet quick-release mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223236206.3U CN219267582U (en) | 2022-12-02 | 2022-12-02 | Permanent magnet quick-release mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219267582U true CN219267582U (en) | 2023-06-27 |
Family
ID=86858565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223236206.3U Active CN219267582U (en) | 2022-12-02 | 2022-12-02 | Permanent magnet quick-release mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219267582U (en) |
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2022
- 2022-12-02 CN CN202223236206.3U patent/CN219267582U/en active Active
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