CN217114220U - Indoor circuit breaker permanent magnetic mechanism assembly - Google Patents
Indoor circuit breaker permanent magnetic mechanism assembly Download PDFInfo
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- CN217114220U CN217114220U CN202220310247.3U CN202220310247U CN217114220U CN 217114220 U CN217114220 U CN 217114220U CN 202220310247 U CN202220310247 U CN 202220310247U CN 217114220 U CN217114220 U CN 217114220U
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Abstract
The utility model relates to a circuit breaker technical field, the scheme is an indoor circuit breaker permanent magnetic mechanism assembly, including the outer yoke, the lower yoke, the permanent magnet, closing coil, go up the yoke, the separating brake coil, the inner yoke, move the iron core, drive shaft and separating brake spring, the activity of top middle part of outer yoke is inserted and is equipped with and moves the iron core, the bottom of outer yoke is provided with the lower yoke, the lower yoke top is the annular and inlays and is equipped with a plurality of groups permanent magnet, the lower yoke upside is provided with the yoke, the correspondence of the side is provided with separating brake coil and closing coil about the outer yoke inner chamber, the inner yoke butt sets up between separating brake coil and closing coil, compared with the prior art, the beneficial effects of the utility model are that: compared with the prior art, the spring elastic mechanism is designed, the elastic force of the opening spring can be adjusted, the opening spring is in a proper working state, and the permanent magnet mechanism can stably achieve opening and closing operations of the circuit breaker.
Description
Technical Field
The utility model relates to a circuit breaker technical field specifically is indoor circuit breaker permanent magnetism mechanism assembly.
Background
The traditional vacuum circuit breaker is generally provided with a spring operating mechanism, the structure is complex, the number of parts is large, the number of moving parts and friction surfaces is large, the loss and solidification of a lubricant can cause mechanism failure, and the reliability is poor. The permanent magnet mechanism appearing in recent years has better development by the advantages of simple structure, few parts, high reliability and the like, but the high-voltage and high-capacity vacuum circuit breaker requires great stroke of the permanent magnet mechanism, great holding force of a closing state and great closing operation power.
Patent CN202020091366.5 discloses a permanent magnetic mechanism for a high-low voltage vacuum circuit breaker of an electric power system, which is structurally improved to reduce the overall compact volume, especially greatly reduce the height, and has strong applicability, safety and reliability; however, the same as most indoor permanent magnet mechanisms in the prior art, the switching-on spring is difficult to replace, when the switching-on spring is used through fatigue or influenced by other internal and external reasons, the elastic force of the switching-on spring is changed, and when the elastic force is reduced, the switching-off is unstable; when the elasticity is increased, the permanent magnet mechanism can overcome the elasticity of the permanent magnet, so that the permanent magnet mechanism cannot be effectively switched on.
Based on this, this scheme has designed an indoor circuit breaker permanent magnetism mechanism assembly that can adjust separating brake spring elasticity to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an indoor circuit breaker permanent magnetic mechanism assembly to solve "but this patent that proposes in the background art is the same with the indoor permanent magnetic mechanism of the majority of current, and closing spring is difficult to change, and when it is used through tired or other inside and outside reason influences, can make closing spring's elasticity change, and when elasticity reduces, can make the separating brake unstable; when the elasticity is increased, the permanent magnet mechanism can overcome the elasticity of the permanent magnet, so that the permanent magnet mechanism cannot be effectively switched on.
In order to achieve the above object, the utility model provides a following technical scheme:
an indoor breaker permanent magnetic mechanism assembly comprises an outer yoke, a lower yoke, a permanent magnet, a closing coil, an upper yoke, a switching-off coil, an inner yoke, a movable iron core, a driving shaft and a switching-off spring, a movable iron core is movably inserted in the middle of the top end of the outer yoke, a lower yoke is arranged at the bottom end of the outer yoke, the top end of the lower magnetic yoke is embedded with a plurality of groups of permanent magnets in a ring shape, the upper side of the lower magnetic yoke is provided with an upper magnetic yoke, the upper side and the lower side of the inner cavity of the outer yoke are correspondingly provided with a switching-off coil and a switching-on coil, the inner yoke is arranged between the switching-off coil and the switching-on coil in an abutting mode, the bottom of the closing coil is abutted against the top of the upper magnetic yoke, the middle part of the bottom end of the movable iron core is provided with a driving shaft, the bottom end of the driving shaft penetrates through the upper magnetic yoke and the lower magnetic yoke in a movable mode in sequence, a brake separating spring is connected between the upper magnetic yoke and the movable iron core, and a spring elastic structure is arranged on the movable iron core.
Preferably, the spring elastic structure is including establishing the ring spring draw-in groove that moves the iron core bottom, it is equipped with the annular slab to slide in the ring spring draw-in groove, separating brake spring upper portion cover is established in the ring spring draw-in groove, and the separating brake spring top is connected with the annular slab bottom surface, the rotation in annular slab top left side is provided with adjusting screw, the annular slab top is provided with the guide bar, it is equipped with screw thread through-hole and guiding hole respectively to move adjusting screw and guide bar on the iron core.
Preferably, the movable iron core is of a T-shaped cylindrical structure, a counter bore is formed in the top end of the movable iron core, and the threaded through hole and the guide hole are located on the inner side of the counter bore.
Preferably, a cushion layer is arranged at the bottom end of the annular skirt at the top of the movable iron core.
Preferably, the lower magnetic yoke is of a T-shaped column structure, and the lower magnetic yoke is in threaded connection with the outer magnetic yoke.
Preferably, the permanent magnet is an N-type neodymium iron boron magnet.
Compared with the prior art, the beneficial effects of the utility model are that: compared with the prior art, the spring elastic mechanism is designed, the elastic force of the opening spring can be adjusted, the opening spring is in a proper working state, and the permanent magnet mechanism can stably achieve opening and closing operations of the circuit breaker.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a perspective view of the present invention;
fig. 3 is a top view of the lower yoke of the present invention;
fig. 4 is a schematic perspective view of the movable iron core of the present invention.
The reference numbers are as follows:
1. an outer yoke; 2. a lower magnetic yoke; 3. a permanent magnet; 4. a closing coil; 5. an upper magnetic yoke; 6. a brake separating coil; 7. An inner yoke; 8. a movable iron core; 9. a drive shaft; 10. a brake separating spring; 11. an annular spring clamp groove; 12. an annular plate; 13. adjusting the screw rod; 14. a guide bar; 15. a guide hole; 16. a counterbore.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 1-4, the present embodiment provides a technical solution:
an indoor circuit breaker permanent magnet mechanism assembly comprises an outer yoke 1, a lower magnetic yoke 2, permanent magnets 3, a closing coil 4, an upper magnetic yoke 5, a separating brake coil 6, an inner yoke 7, a movable iron core 8, a driving shaft 9 and a separating brake spring 10, wherein the movable iron core 8 is movably inserted in the middle of the top end of the outer yoke 1, the lower magnetic yoke 2 is arranged at the bottom end of the outer yoke 1, a plurality of groups of permanent magnets 3 are annularly embedded in the top end of the lower magnetic yoke 2, the upper magnetic yoke 5 is arranged on the upper side of the lower magnetic yoke 2, the separating brake coil 6 and the closing brake coil 4 are correspondingly arranged on the upper side and the lower side of an inner cavity of the outer yoke 1, the inner yoke 7 is abutted between the separating brake coil 6 and the closing coil 4, the top of the upper magnetic yoke 5 is abutted on the bottom of the closing coil 4, the driving shaft 9 is arranged in the middle of the bottom end of the movable iron core 8, the bottom end of the driving shaft 9 sequentially and movably penetrates through the upper magnetic yoke 5 and the lower magnetic yoke 2, the separating brake spring 10 is connected between the upper magnetic yoke 5 and the movable iron core 8, the movable iron core 8 is provided with a spring elastic structure.
Wherein, the spring elastic structure is including establishing the annular spring draw-in groove 11 in 8 bottoms of moving iron core, and annular spring draw-in groove 11 slides and is equipped with annular plate 12, and the cover is established in annular spring draw-in groove 11 on separating brake spring 10 upper portion, and the separating brake spring 10 top is connected with annular plate 12 bottom surface, and the rotation in 12 tops of annular plate left sides is provided with adjusting screw 13, and the 12 tops of annular plate are provided with guide bar 14, and it is equipped with screw thread through-hole and guiding hole 15 respectively to correspond adjusting screw 13 and guide bar 14 on the moving iron core 8.
In some embodiments, the movable iron core 8 is a T-shaped cylindrical structure, the top end of the movable iron core 8 is provided with a counter bore 16, and the threaded through hole and the guide hole 15 are located inside the counter bore 16, which is designed for aesthetic structural design.
In some embodiments, the bottom end of the annular skirt at the top of the plunger 8 is provided with a cushion layer for reducing the impact force and protecting the device itself.
In some embodiments, the lower yoke 2 is a T-shaped cylindrical structure, and the lower yoke 2 is connected with the outer yoke 1 through threads, so that the lower yoke can be disassembled and assembled, and the permanent magnet can be replaced or the internal components can be inspected conveniently.
In some embodiments, to increase the magnetic force of the permanent magnet, permanent magnet 3 is a neodymium iron boron magnet, preferably of type N40.
The working principle is as follows: when the circuit is switched on, as shown in fig. 1, a current is introduced into the switching-on coil 4, the switching-on coil 4 generates an electromagnetic field which is superposed with the permanent magnet 3 in the positive direction, the superposed magnetic force enables the movable iron core 8 to overcome the elastic force of the switching-off spring 10 to approach the permanent magnet 3, when the distance between the movable iron core and the permanent magnet approaches a certain degree, the driving shaft 9 drives the external circuit breaker to realize the switching-on, and at the moment, because the magnetic gap between the movable iron core and the permanent magnet is small, the attractive force between the movable iron core and the permanent magnet is greater than the elastic force of the switching-off spring, the switching-on coil 4 is powered off, and the switching-on state can still be maintained;
when the brake is switched off, current is introduced into the brake-off coil 6, an electromagnetic field opposite to the permanent magnet 4 is generated, the attraction force between the movable iron core and the permanent magnet is reduced, the movable iron core 8 is far away from the permanent magnet 3 under the matching action of the brake-off spring 10, and the drive shaft 9 drives the external circuit breaker to be switched off.
Under the influence of some internal and external reasons, the elasticity of the opening spring 10 is changed, the opening and closing functions of the permanent magnet mechanism can be influenced, the working elasticity of the opening spring 10 needs to be changed through a spring elastic structure, and the specific adjusting process is as follows:
with reference to fig. 1, the adjusting screw 13 is rotated to ascend or descend in the threaded through hole, and then drives the annular plate 12 to ascend or descend; when the annular plate 12 is raised, the working elastic force of the opening spring 10 is reduced, otherwise, when the annular plate 12 is lowered, the working elastic force of the opening spring 10 is increased.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The further embodiments of the present invention disclosed above are merely intended to help illustrate the present invention. Further examples are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. An indoor circuit breaker permanent magnet mechanism assembly is characterized by comprising an outer yoke (1), a lower yoke (2), permanent magnets (3), a closing coil (4), an upper yoke (5), a separating coil (6), an inner yoke (7), a movable iron core (8), a driving shaft (9) and a separating spring (10), wherein the movable iron core (8) is movably inserted in the middle of the top end of the outer yoke (1), the lower yoke (2) is arranged at the bottom end of the outer yoke (1), a plurality of groups of permanent magnets (3) are embedded in the top end of the lower yoke (2) in an annular manner, the upper yoke (5) is arranged on the upper side of the lower yoke (2), the separating coil (6) and the closing coil (4) are correspondingly arranged on the upper side and the lower side of an inner cavity of the outer yoke (1), the inner yoke (7) is abutted between the separating coil (6) and the closing coil (4), the bottom of the closing coil (4) is abutted to the top of the upper yoke (5), the bottom middle part of moving iron core (8) is provided with drive shaft (9), drive shaft (9) bottom is the activity in proper order and runs through upper yoke (5) and lower yoke (2), be connected with separating brake spring (10) between upper yoke (5) and moving iron core (8), be provided with the spring elasticity structure on moving iron core (8).
2. The indoor circuit breaker permanent magnet mechanism assembly of claim 1, wherein: spring elastic structure is including establishing annular spring draw-in groove (11) moving iron core (8) bottom, it is equipped with annular slab (12) to slide in annular spring draw-in groove (11), separating brake spring (10) upper portion cover is established in annular spring draw-in groove (11), and separating brake spring (10) top is connected with annular slab (12) bottom surface, annular slab (12) top left side is rotated and is provided with adjusting screw (13), annular slab (12) top is provided with guide bar (14), it is equipped with screw thread through-hole and guiding hole (15) respectively to correspond adjusting screw (13) and guide bar (14) on iron core (8) to move.
3. The indoor circuit breaker permanent magnet mechanism assembly of claim 2, wherein: the movable iron core (8) is of a T-shaped cylindrical structure, a counter bore (16) is formed in the top end of the movable iron core (8), and the threaded through hole and the guide hole (15) are located in the inner side of the counter bore (16).
4. The indoor circuit breaker permanent magnet mechanism assembly of claim 3, wherein: and a buffer cushion layer is arranged at the bottom end of the annular skirt at the top of the movable iron core (8).
5. The indoor circuit breaker permanent magnet mechanism assembly of claim 1, wherein: the lower magnetic yoke (2) is of a T-shaped cylindrical structure, and the lower magnetic yoke (2) is connected with the outer magnetic yoke (1) through threads.
6. The indoor circuit breaker permanent magnet mechanism assembly of claim 1, wherein: the permanent magnet (3) is an N40 type neodymium iron boron magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220310247.3U CN217114220U (en) | 2022-02-16 | 2022-02-16 | Indoor circuit breaker permanent magnetic mechanism assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220310247.3U CN217114220U (en) | 2022-02-16 | 2022-02-16 | Indoor circuit breaker permanent magnetic mechanism assembly |
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| CN217114220U true CN217114220U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220310247.3U Active CN217114220U (en) | 2022-02-16 | 2022-02-16 | Indoor circuit breaker permanent magnetic mechanism assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117637291A (en) * | 2024-01-26 | 2024-03-01 | 深圳市东升源电气设备有限公司 | Bistable permanent magnet mechanism, circuit breaker and switch cabinet |
| CN117650026A (en) * | 2024-01-26 | 2024-03-05 | 东升源(广东)智能电气有限公司 | Bistable permanent magnet mechanism and circuit breaker |
-
2022
- 2022-02-16 CN CN202220310247.3U patent/CN217114220U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117637291A (en) * | 2024-01-26 | 2024-03-01 | 深圳市东升源电气设备有限公司 | Bistable permanent magnet mechanism, circuit breaker and switch cabinet |
| CN117650026A (en) * | 2024-01-26 | 2024-03-05 | 东升源(广东)智能电气有限公司 | Bistable permanent magnet mechanism and circuit breaker |
| CN117637291B (en) * | 2024-01-26 | 2024-04-02 | 深圳市东升源电气设备有限公司 | Bistable permanent magnet mechanism, circuit breaker and switch cabinet |
| CN117650026B (en) * | 2024-01-26 | 2024-04-05 | 东升源(广东)智能电气有限公司 | Bistable permanent magnet mechanism and circuit breaker |
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