CN117650026A - Bistable permanent magnet mechanism and circuit breaker - Google Patents
Bistable permanent magnet mechanism and circuit breaker Download PDFInfo
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- CN117650026A CN117650026A CN202410107243.9A CN202410107243A CN117650026A CN 117650026 A CN117650026 A CN 117650026A CN 202410107243 A CN202410107243 A CN 202410107243A CN 117650026 A CN117650026 A CN 117650026A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The invention relates to the technical field of circuit breakers, in particular to a bistable permanent magnet mechanism and a circuit breaker, which comprise a first magnetic yoke, a driving shaft and a buffer component, wherein a brake separating coil, a brake closing coil and a first permanent magnet are arranged in the first magnetic yoke, the first magnetic yoke is connected with a second magnetic yoke and a third magnetic yoke, the driving shaft is connected with a movable iron core and is provided with an annular clamping groove, the buffer component comprises a shell, a fourth magnetic yoke, a bottom cover, a first elastic piece, a steel ball, a magnetic latch piece and a second elastic piece, the first elastic piece is sleeved on the driving shaft, the first elastic piece is respectively abutted with the driving shaft and the bottom cover, the steel ball can be abutted or separated from the annular clamping groove, the magnetic latch piece is arranged in a fourth cavity of the shell and partially penetrates through a sixth cavity of the shell to be abutted with the steel ball, and the magnetic latch piece and the third magnetic yoke are opposite in polarity, and the second elastic piece is respectively abutted with the fourth magnetic yoke and the magnetic latch piece. The invention can buffer and lock the opening of the permanent magnet mechanism, and improve the opening reliability.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a bistable permanent magnet mechanism and a circuit breaker.
Background
Circuit breakers are one of the important switching devices in electrical power systems, wherein permanent magnet mechanisms are common operating mechanisms in circuit breakers. However, the existing permanent magnet mechanism has the phenomena of breaking bouncing caused by too large breaking impulse and too high breaking speed in use, so that breaking failure is caused.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the bistable permanent magnet mechanism and the circuit breaker provided by the invention can buffer and lock the opening of the permanent magnet mechanism, and improve the opening reliability.
In one aspect, embodiments of the present invention provide a bistable permanent magnet mechanism comprising:
the first magnetic yoke is internally provided with a first chamber, a second chamber and a third chamber which are mutually communicated, the third chamber is positioned between the first chamber and the second chamber, a brake separating coil is arranged in the first chamber, a brake closing coil is arranged in the second chamber, a first permanent magnet is arranged in the third chamber, the first end of the first magnetic yoke is connected with a second magnetic yoke which covers the first chamber, and the second end of the first magnetic yoke is connected with a third magnetic yoke which covers the second chamber;
the driving shaft is movably arranged through the second magnetic yoke and the third magnetic yoke in a penetrating mode, the driving shaft is connected with a movable iron core, the movable iron core is positioned in the first magnetic yoke and can move in the first chamber, the second chamber and the third chamber, and an annular clamping groove is formed in the driving shaft;
the buffer component is sleeved on the outer side of the driving shaft and comprises a shell, a fourth magnetic yoke, a bottom cover, a first elastic piece, a steel ball, a magnetic latch piece and a second elastic piece, wherein the shell is provided with a fourth chamber, a fifth chamber and a sixth chamber, the fourth magnetic yoke is connected with the shell and covers the fourth chamber, the fourth magnetic yoke is further connected with the third magnetic yoke, the bottom cover is connected with the shell and covers the fifth chamber, the first elastic piece is sleeved on the driving shaft and is positioned in the fifth chamber, the first end of the first elastic piece is abutted to the driving shaft, the second end of the first elastic piece is abutted to the bottom cover, the steel ball is accommodated in the sixth chamber and can be abutted to or separated from the annular clamping groove, the magnetic latch piece is installed in the fourth chamber and partially penetrates through the sixth chamber to be abutted to the steel ball, the magnetic latch piece is opposite to the third chamber, the first end of the first elastic piece is installed in the fourth chamber, the second elastic piece is abutted to the fourth end of the second elastic piece.
According to some embodiments of the invention, an inner partition is formed in the shell and located between the fourth chamber and the fifth chamber, a first subchamber is arranged on the inner partition and towards one side of the fifth chamber, an inner cover plate covering the first subchamber is connected to the inner partition, a second subchamber is arranged on the inner cover plate, and the first subchamber and the second subchamber form the sixth chamber.
According to some embodiments of the invention, a first sub-bayonet is arranged on the inner partition and towards one side of the driving shaft, a second sub-bayonet matched with the first sub-bayonet is arranged on the inner cover plate, the first sub-bayonet and the second sub-bayonet form a first bayonet, and the steel ball can be partially penetrated into the first bayonet.
According to some embodiments of the invention, the number of the sixth chambers is one or more, and a plurality of the sixth chambers are uniformly distributed around the driving shaft.
According to some embodiments of the invention, the inner partition is provided with a avoiding hole adapted to the sixth chamber, and the magnetic latch part is partially penetrating through the avoiding hole and can be abutted against the steel ball.
According to some embodiments of the invention, the magnetic latch member includes a second permanent magnet and a latch connected to the second permanent magnet, and the latch portion is disposed through the sixth chamber to abut against the steel ball.
According to some embodiments of the invention, the second permanent magnet is in a ring structure, the number of the bolts is plural, and the bolts are connected to the bottom of the second permanent magnet.
According to some embodiments of the invention, the second elastic member includes a first support plate, a second support plate, and a plurality of first springs, each of which has a first end connected to the first support plate, and each of which has a second end connected to the second support plate.
According to some embodiments of the invention, a first abutment ring is mounted on the drive shaft, the first abutment ring abutting a first end of the first resilient member.
On the other hand, the embodiment of the invention provides a circuit breaker, which comprises the bistable permanent magnet mechanism.
The embodiment of the invention has at least the following beneficial effects:
according to the embodiment of the invention, the first elastic piece of the buffer assembly absorbs excessive impact energy in the brake separating process, so that a buffer effect is achieved, the driving shaft is locked through the steel ball, brake separating bouncing is avoided, and the brake separating stability is improved.
Additional aspects and advantages of the invention 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 invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention 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 diagram of a bistable permanent magnet mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the bistable permanent magnet mechanism shown in FIG. 1 in a closed state;
FIG. 3 is a schematic cross-sectional structural view of the bistable permanent magnet mechanism shown in FIG. 1 in the off state;
FIG. 4 is an enlarged partial schematic view of the circled position A in FIG. 3;
FIG. 5 is a schematic diagram of an exploded view of a buffer assembly of the bistable permanent magnet mechanism shown in FIG. 1;
fig. 6 is a schematic cross-sectional structural view of a buffer assembly of the bistable permanent magnet mechanism shown in fig. 1.
Reference numerals:
the first yoke 110, the first chamber 111, the second chamber 112, the opening coil 120, the closing coil 130, the first permanent magnet 140, the second yoke 150, the third yoke 160, the connection collar 161, the drive shaft 170, the moving core 180, the annular clamping groove 171, the buffer assembly 200, the case 210, the fourth chamber 211, the escape hole 2111, the fifth chamber 212, the sixth chamber 213, the inner partition 214, the inner cover plate 215, the second sub-chamber 2151, the second sub-bayonet 2152, the fourth yoke 220, the first threaded hole 221, the bottom cover 230, the first elastic member 240, the steel ball 250, the magnetic latch 260, the second permanent magnet 261, the latch 262, the inclined surface 263, the second elastic member 270, the first support plate 271, the second support plate 272, the first spring 273, and the first abutment ring 280.
Detailed Description
Embodiments of the present invention 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 invention.
In the description of the present invention, 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 invention 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 invention.
In the description of the present invention, the meaning of "a number" means one or more, the meaning of "a plurality" 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. If any, the terms "first," "second," etc. are used for distinguishing between technical features only, and should not be construed as indicating or implying a 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 invention, unless explicitly defined otherwise, terms such as "disposed," "mounted," "connected," and the like are to be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by those skilled in the art in combination with the specific contents of the technical solutions.
Referring to fig. 1, the bistable permanent magnet mechanism includes a first yoke 110, a driving shaft 170 and a buffer assembly 200, wherein, referring to fig. 2 and 3, the first yoke 110 is in a cylindrical structure, a first end and a second end of the first yoke 110 are both provided with openings, a first chamber 111, a second chamber 112 and a third chamber which are mutually communicated are arranged inside the first yoke 110, the third chamber is located between the first chamber 111 and the second chamber 112, a brake separating coil 120 is installed in the first chamber 111, a brake closing coil 130 is installed in the second chamber 112, a first permanent magnet 140 is installed in the third chamber, the first permanent magnet 140 is connected with an inner wall of the first yoke 110, the first end of the first yoke 110 is connected with a second yoke 150 which covers the first chamber 111 for limiting and fixing the brake separating coil 120, and the second end of the first yoke 110 is connected with a third yoke 160 which covers the second chamber 112 for limiting and fixing the brake closing coil 130. The driving shaft 170 movably penetrates through the second magnetic yoke 150 and the third magnetic yoke 160, a movable iron core 180 is connected to the driving shaft 170, the movable iron core 180 is located in the first magnetic yoke 110 and can move in the first chamber 111, the second chamber 112 and the third chamber, and an annular clamping groove 171 is formed in the driving shaft 170.
Referring to fig. 2, 3 and 4, the buffer assembly 200 is sleeved on the outside of the driving shaft 170, the buffer assembly 200 includes a housing 210, a fourth yoke 220, a bottom cover 230, a first elastic member 240, a steel ball 250, a magnetic latch member 260 and a second elastic member 270, the housing 210 is provided with a fourth chamber 211, a fifth chamber 212 and a sixth chamber 213, the fourth yoke 220 is connected with the housing 210 and covers the fourth chamber 211, the fourth yoke 220 is further connected with the third yoke 160, and for example, referring to fig. 4 and 5, the third yoke 160 is provided with a connection collar 161, the outer wall of the connection collar 161 is provided with a first connection screw, the fourth yoke 220 is provided with a first screw hole 221, the inner wall of the first screw hole 221 is provided with a second connection screw, the first screw hole 221 can be mounted on the connection collar 161, and screw connection is realized through cooperation of the first connection screw, and it is worth mentioning that adjacent surfaces between the third yoke 160 and the fourth yoke 220 are in close contact to enhance the magnetic field force between the third yoke 160 and the fourth yoke 220. Referring to fig. 2, 3, 5 and 6, the bottom cover 230 is connected to the housing 210 and covers the fifth chamber 212, the first elastic member 240 is sleeved on the driving shaft 170 and is located in the fifth chamber 212, the first end of the first elastic member 240 is directly or indirectly abutted to the driving shaft 170, the second end of the first elastic member 240 is abutted to the bottom cover 230, the steel ball 250 is accommodated in the sixth chamber 213 and can be abutted to or separated from the annular clamping groove 171, the magnetic latch 260 is installed in the fourth chamber 211 and partially penetrates through the sixth chamber 213 to be abutted to the steel ball 250, the polarity of the magnetic latch 260 is opposite to that of the third yoke 160, the second elastic member 270 is installed in the fourth chamber 211, the first end of the second elastic member 270 is abutted to the fourth yoke 220, the second end of the second elastic member 270 is abutted to the magnetic latch 260, and the second elastic member 270 is used for applying elastic force to the magnetic latch 260 to push the magnetic latch 260 toward the steel ball 250. It is conceivable that through holes for avoiding the driving shaft 170 are provided in each of the case 210, the fourth yoke 220, and the bottom cover 230 to form a passage allowing the driving shaft 170 to pass therethrough.
Referring to fig. 2 and 3, fig. 2 shows the permanent magnet mechanism in a closed state, and fig. 3 shows the permanent magnet mechanism in an open state. As shown in fig. 2, when the brake is released, the brake release coil 120 is energized, the brake release coil 120 generates a reverse electromagnetic field with the second magnetic yoke 150, when the downward resultant force applied by the movable iron core 180 is greater than the suction force, the movable iron core 180 drives the driving shaft 170 to move downward, because the downward movement speed of the driving shaft 170 is too fast, the brake release rebound phenomenon occurs when the driving shaft 170 moves to the brake release working position in the related art, while the first elastic member 240 is used for absorbing the excessive kinetic energy of the driving shaft 170 to buffer, the driving shaft 170 gradually compresses the first elastic member 240 in the downward movement process, when the driving shaft 170 moves to the target position, the kinetic energy of the driving shaft 170 approaches zero, and when the annular clamping groove 171 of the driving shaft 170 moves to the position of the steel ball 250, the steel ball 250 is clamped into the annular clamping groove 171, and the magnetic pin member 260 and the second elastic member 270 continuously apply a force to the steel ball 250 to lock the driving shaft 170, so as to further avoid brake release rebound;
referring to fig. 3 and 4, when the switch-on is performed, the switch-on coil 130 is energized, the switch-on coil 130 generates a reverse electromagnetic field with the third magnetic yoke 160, the magnetic field force of the third magnetic yoke 160 and the magnetic field force of the fourth magnetic yoke 220 are weakened, the magnetic force applied by the magnetic latch member 260 is weakened, so that the pressing force applied by the magnetic latch member 260 to the steel ball 250 is weakened, the locking state of the steel ball 250 is released, when the upward resultant force applied by the movable iron core 180 is greater than the attractive force, the movable iron core 180 drives the driving shaft 170 to move upward, during the upward movement of the driving shaft 170, the driving shaft 170 applies a radial pressure to the steel ball 250, and the radial pressure is transmitted to the magnetic latch member 260 through the steel ball 250, and the steel ball 250 can squeeze the magnetic latch member 260 out of the sixth chamber 213 due to the weakening magnetic field force applied by the magnetic latch member 260, so that the steel ball 250 is separated from the annular clamping groove 171 of the driving shaft 170, and the locking of the driving shaft 170 is released. In some embodiments, an auxiliary coil is installed in the fourth chamber 211 of the buffer assembly 200, and when the auxiliary coil is energized, an electromagnetic field generated by the auxiliary coil weakens the magnetic force of the magnetic latch member 260 to release the locking state of the steel ball 250.
Referring to fig. 5 and 6, an inner partition 214 is formed in the housing 210 of the buffer assembly 200 and between the fourth chamber 211 and the fifth chamber 212, a first sub-chamber is disposed on one side of the inner partition 214 facing the fifth chamber 212, the inner partition 214 is connected to an inner cover plate 215 covering the first sub-chamber, a second sub-chamber 2151 is disposed on the inner cover plate 215, and the first sub-chamber and the second sub-chamber 2151 form a sixth chamber 213. In assembly, steel ball 250 is placed in the first subchamber and inner cover plate 215 is capped into inner partition 214, and inner cover plate 215 is then locked to inner partition 214 by threaded fasteners, such as screws or bolts, to mount steel ball 250 into sixth chamber 213, allowing steel ball 250 to move within sixth chamber 213.
In addition, a first sub-bayonet is disposed on the inner partition 214 and is disposed towards one side of the driving shaft 170, a second sub-bayonet 2152 adapted to the first sub-bayonet is disposed on the inner cover 215, the first sub-bayonet and the second sub-bayonet 2152 form a first bayonet, the steel ball 250 can be partially inserted into the first bayonet, and the diameter of the first bayonet is smaller than that of the steel ball 250, so that the steel ball 250 is limited, and the steel ball 250 can partially penetrate through the first bayonet to limit the driving shaft 170.
The number of the sixth chambers 213 is one or more, and the plurality of sixth chambers 213 are uniformly distributed around the driving shaft 170. In this embodiment, the number of the sixth chambers 213 is four, the four sixth chambers 213 are uniformly distributed around the driving shaft 170, and steel balls 250 are installed in each sixth chamber 213, so as to lock the driving shaft 170 at multiple angles.
Referring to fig. 5, an avoidance hole 2111 adapted to the sixth chamber 213 is provided on the inner partition 214, the avoidance hole 2111 communicates with the fourth chamber 211 and the sixth chamber 213, the magnetic latch 260 is installed in the fourth chamber 211, and the magnetic latch 260 partially penetrates through the avoidance hole 2111 and can be abutted with the steel ball 250.
Referring to fig. 5 and 6, the magnetic latch member 260 includes a second permanent magnet 261 and a latch 262 connected with the second permanent magnet 261, and the latch 262 is partially disposed through the sixth chamber 213 to abut against the steel ball 250. Referring to fig. 4, the latch 262 is provided with a slope 263, and when the latch 262 moves downward, the slope 263 of the latch 262 contacts the steel ball 250, thereby applying a pressing force to the steel ball 250; and when the magnetic force applied to the magnetic latch member 260 is weakened, the steel ball 250 applies a pressing force to the latch 262 through the inclined surface 263 to press the latch 262 upward, thereby withdrawing the latch 262 from the sixth chamber 213.
Specifically, the second permanent magnet 261 is in a ring structure, the number of the bolts 262 is plural, and the bolts 262 are connected to the bottom of the second permanent magnet 261. The number of pins 262 is adapted to the number of steel balls 250, four being an example in this embodiment. The plurality of pins 262 are coupled to the bottom of the second permanent magnet 261, so that the synchronization of the movement of the plurality of pins 262, i.e., the plurality of pins 262 move upward in synchronization when the pins 262 are respectively pressed by the steel balls 250.
With continued reference to fig. 5 and 6, the second elastic member 270 includes a first support plate 271, a second support plate 272, and a plurality of first springs 273, wherein first ends of the plurality of first springs 273 are connected to the first support plate 271, and second ends of the plurality of first springs 273 are connected to the second support plate 272. Since the magnetic force between the third yoke 160 and the magnetic latch member 260 is limited, the second elastic member 270 serves to compensate for the pressure of the magnetic latch member 260 in order to maintain the pressing force of the steel ball 250 against the driving shaft 170. The first support plate 271 and the second support plate 272 of this embodiment are each in a ring structure, and the plurality of first springs 273 are uniformly distributed on the first support plate 271 and the second support plate 272, so that uniform pressure is applied to the magnetic latch member 260.
Referring to fig. 2 or 3, a first abutment ring 280 is mounted on the driving shaft 170, and the first abutment ring 280 abuts against a first end of the first elastic member 240. Wherein the first abutment ring 280 is threadably mounted on the drive shaft 170. At the time of assembly, the fourth yoke 220 and the case 210 are coupled by a screw fastener such as a screw or a screw, then are fitted over the driving shaft 170 and coupled with the third yoke 160, then the first abutment ring 280 is mounted on the driving shaft 170, and the first elastic member 240 is fitted over, and finally the bottom cover 230 is mounted on the case 210.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention 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 invention.
Claims (10)
1. A bistable permanent magnet mechanism, comprising:
the first magnetic yoke is internally provided with a first chamber, a second chamber and a third chamber which are mutually communicated, the third chamber is positioned between the first chamber and the second chamber, a brake separating coil is arranged in the first chamber, a brake closing coil is arranged in the second chamber, a first permanent magnet is arranged in the third chamber, the first end of the first magnetic yoke is connected with a second magnetic yoke which covers the first chamber, and the second end of the first magnetic yoke is connected with a third magnetic yoke which covers the second chamber;
the driving shaft is movably arranged through the second magnetic yoke and the third magnetic yoke in a penetrating mode, the driving shaft is connected with a movable iron core, the movable iron core is positioned in the first magnetic yoke and can move in the first chamber, the second chamber and the third chamber, and an annular clamping groove is formed in the driving shaft;
the buffer component is sleeved on the outer side of the driving shaft and comprises a shell, a fourth magnetic yoke, a bottom cover, a first elastic piece, a steel ball, a magnetic latch piece and a second elastic piece, wherein the shell is provided with a fourth chamber, a fifth chamber and a sixth chamber, the fourth magnetic yoke is connected with the shell and covers the fourth chamber, the fourth magnetic yoke is further connected with the third magnetic yoke, the bottom cover is connected with the shell and covers the fifth chamber, the first elastic piece is sleeved on the driving shaft and is positioned in the fifth chamber, the first end of the first elastic piece is abutted to the driving shaft, the second end of the first elastic piece is abutted to the bottom cover, the steel ball is accommodated in the sixth chamber and can be abutted to or separated from the annular clamping groove, the magnetic latch piece is installed in the fourth chamber and partially penetrates through the sixth chamber to be abutted to the steel ball, the magnetic latch piece is opposite to the third chamber, the first end of the first elastic piece is installed in the fourth chamber, the second elastic piece is abutted to the fourth end of the second elastic piece.
2. The bistable permanent magnet mechanism of claim 1, wherein an inner partition is formed in the housing and between the fourth chamber and the fifth chamber, a first subchamber is arranged on the inner partition and towards one side of the fifth chamber, an inner cover plate covering the first subchamber is connected to the inner partition, a second subchamber is arranged on the inner cover plate, and the first subchamber and the second subchamber form the sixth chamber.
3. The bistable permanent magnet mechanism of claim 2, wherein a first sub-bayonet is arranged on the inner partition and towards one side of the driving shaft, a second sub-bayonet matched with the first sub-bayonet is arranged on the inner cover plate, the first sub-bayonet and the second sub-bayonet form a first bayonet, and the steel ball can be partially penetrated into the first bayonet.
4. A bistable permanent magnet mechanism according to claim 1, 2 or 3, wherein the number of said sixth chambers is one or more, and a plurality of said sixth chambers are equispaced about said drive shaft.
5. A bistable permanent magnet mechanism according to claim 2 or 3, wherein the inner partition is provided with a relief hole adapted to the sixth chamber, and the magnetic latch member portion is disposed through the relief hole and is capable of abutting against the steel ball.
6. The bistable permanent magnet mechanism of claim 1, wherein said magnetic latch member comprises a second permanent magnet and a latch coupled to said second permanent magnet, said latch portion passing through said sixth chamber to abut said steel ball.
7. The bistable permanent magnet mechanism of claim 6, wherein said second permanent magnet is of a ring-like configuration, said plurality of pins being connected to the bottom of said second permanent magnet.
8. The bistable permanent magnet mechanism of claim 1, 6 or 7, wherein said second elastic member comprises a first support plate, a second support plate and a plurality of first springs, wherein a first end of each of said plurality of first springs is coupled to said first support plate and a second end of each of said plurality of first springs is coupled to said second support plate.
9. The bistable permanent magnet mechanism of claim 1, wherein a first abutment ring is mounted on said drive shaft, said first abutment ring abutting a first end of said first resilient member.
10. A circuit breaker comprising a bistable permanent magnet mechanism according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410107243.9A CN117650026B (en) | 2024-01-26 | 2024-01-26 | Bistable permanent magnet mechanism and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410107243.9A CN117650026B (en) | 2024-01-26 | 2024-01-26 | Bistable permanent magnet mechanism and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117650026A true CN117650026A (en) | 2024-03-05 |
| CN117650026B CN117650026B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410107243.9A Active CN117650026B (en) | 2024-01-26 | 2024-01-26 | Bistable permanent magnet mechanism and circuit breaker |
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| Country | Link |
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| CN (1) | CN117650026B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889214A (en) * | 2006-06-13 | 2007-01-03 | 上海电器股份有限公司人民电器厂 | Dynamic three coil type double-steady permanent magnetic operating mechanism |
| CN103500672A (en) * | 2013-10-12 | 2014-01-08 | 东南大学 | Permanent magnet operating mechanism for circuit breaker |
| CN214043580U (en) * | 2021-01-18 | 2021-08-24 | 南电电气有限公司 | Bistable permanent magnet operating mechanism |
| CN217114220U (en) * | 2022-02-16 | 2022-08-02 | 环控电力科技有限公司 | Indoor circuit breaker permanent magnetic mechanism assembly |
-
2024
- 2024-01-26 CN CN202410107243.9A patent/CN117650026B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889214A (en) * | 2006-06-13 | 2007-01-03 | 上海电器股份有限公司人民电器厂 | Dynamic three coil type double-steady permanent magnetic operating mechanism |
| CN103500672A (en) * | 2013-10-12 | 2014-01-08 | 东南大学 | Permanent magnet operating mechanism for circuit breaker |
| CN214043580U (en) * | 2021-01-18 | 2021-08-24 | 南电电气有限公司 | Bistable permanent magnet operating mechanism |
| CN217114220U (en) * | 2022-02-16 | 2022-08-02 | 环控电力科技有限公司 | Indoor circuit breaker permanent magnetic mechanism assembly |
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| Publication number | Publication date |
|---|---|
| CN117650026B (en) | 2024-04-05 |
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