CN216902700U

CN216902700U - Magnetic system holding structure of switch

Info

Publication number: CN216902700U
Application number: CN202123419958.9U
Authority: CN
Inventors: 彭琼; 林浩; 龚祚勇; 张艳丽; 常鹤彬
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-05
Anticipated expiration: 2031-12-30

Abstract

A magnetic system holding structure of a switch, characterized in that: the magnetic system holding structure (4) comprises a U-shaped magnetic yoke (401), a permanent magnet (4a) is fixedly arranged on one side wall (401a) of the U-shaped magnetic yoke (401), an iron core (403) is arranged on the inner side of one side wall (401a) of the U-shaped magnetic yoke (401), a rotating coil (405) is sleeved outside the iron core (403), a rotating plate (406) is arranged at the upper end of the iron core (403), two ends of the rotating plate (406) correspond to magnetic poles of the permanent magnet (4a), and the rotating plate (406) can rotate. The magnetic system holding structure can realize the function of single-pole double-throw of a product by a single-acting iron core and a single-acting contact, and reduces the space occupied by a multi-pole contactor.

Description

Magnetic system holding structure of switch

Technical Field

The utility model belongs to the technical field of low-voltage electric appliances, and particularly relates to a magnetic system holding structure of a switch.

Background

The existing single-pole direct current contactor is generally provided with two static contacts and a movable contact plate, under the action of an electromagnetic loop, a push rod part drives the movable contact plate to move upwards, and the movable contact plate is contacted with the static contacts to realize loop connection. In the prior art, in order to perform multi-loop control by using contactors, a plurality of single-pole contactors are usually simply overlapped and matched for use, but the traditional method of performing multi-loop control by overlapping single-pole contactors is high in cost and large in occupied space. And the form of independent control and monopole contactor combination for when certain monopole product of them became invalid, the function that another extremely just can't realize cutting off had very big potential safety hazard. Meanwhile, the arc extinguishing performance of the high-voltage contactor requires that an arc extinguishing chamber of the contactor has higher sealing and inflating performance, and the traditional mode of utilizing single-pole contactors to superpose and carry out multi-loop control is difficult to meet the aim of higher sealing and inflating performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a magnetic system maintaining structure of a switch aiming at the defects of the existing mode of utilizing the single-pole contactor to superpose and carry out multi-loop control, the structure of the existing single-pole single-throw contactor is improved, the magnetic system maintaining structure is added, the single-pole double-throw function of a product is realized on a single-action iron core and a single-action contact, the space occupied by the multi-pole contactor is reduced, and the sealing performance of the contactor is effectively improved.

Technical scheme

In order to achieve the above technical object, the present invention provides a magnetic system holding structure of a switch, characterized in that: the magnetic system holding structure comprises a U-shaped magnetic yoke, a permanent magnet is fixedly arranged on one side wall of the U-shaped magnetic yoke, an iron core is arranged on the inner side of one side wall of the U-shaped magnetic yoke, a rotating coil is sleeved outside the iron core, a rotating plate is arranged at the upper end of the iron core, two ends of the rotating plate correspond to magnetic poles of the permanent magnet, and the rotating plate can rotate.

Further, the permanent magnet is a single permanent magnet or comprises at least one pair of permanent magnets with opposite polarities.

Further, an iron core sleeve is sleeved outside the iron core, and a rotating coil is sleeved outside the iron core sleeve.

Further, the iron core sleeve is welded on the non-magnetic conductive plate.

Further, the pair of permanent magnets is located between a side wall of the U-shaped yoke and the rotating plate.

Furthermore, a boss is arranged on the U-shaped magnetic yoke to increase the magnetic conduction area.

Further, the boss is arranged on the bottom surface of the inner side of the U-shaped magnetic yoke and is positioned right below the coil.

Furthermore, the rotating plate can drive the contact support to rotate through the transmission plate in the rotating process so as to link the moving contact to move, and the contact and the separation of the moving contact and the static contact can realize the connection and disconnection of the contactor.

Furthermore, the rotating plate comprises a driven part corresponding to the magnetic pole of the permanent magnet, the driven part can rotate under the action of the magnetic field force of the magnetic pole of the permanent magnet, and the rotating plate is also provided with a driving part which is linked with the transmission plate.

Further, the driving plate and the rotating plate are coaxially installed at the upper end of the iron core.

Advantageous effects

According to the magnetic system holding structure of the switch, the structure of the existing single-pole single-throw contactor is improved, the magnetic system holding structure is added, the single-pole double-throw function of a product is realized on the single-action iron core and the single-action contact, the space occupied by the multi-pole contactor is reduced, the magnetic holding system is embedded in the arc extinguishing chamber, and the sealing performance of the contactor is effectively improved.

Drawings

FIG. 1 is a schematic diagram of a magnetic circuit of an initial position of a rotating plate in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a magnetic latching mechanism for reverse rotation of a rotating plate according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a magnetic circuit for forward rotation of a rotating plate according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of the mounting of the drive plate in an embodiment of the utility model;

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

As shown in fig. 1,2 and 3, a magnetic system holding structure of a switch, which is used in a contactor as an example in the present embodiment to describe an operation process of the switch, includes a moving contact and a stationary contact, and a contact and a separation of the moving contact and the stationary contact can realize a connection and a disconnection of the contactor.

The magnetic system holding structure 4 includes a U-shaped magnetic yoke 401, a permanent magnet 4a is fixedly mounted on a side wall 401a of the U-shaped magnetic yoke 401, the permanent magnet 4a is a single permanent magnet or includes at least a pair of permanent magnets 402, 402 ' with opposite polarities, in this embodiment, the permanent magnet 4a is a pair of permanent magnets 402, 402 ' with opposite polarities, and the pair of permanent magnets 402, 402 ' is located between a side wall of the U-shaped magnetic yoke 401 and a rotating plate 406.

An iron core 403 is arranged on the inner side of one side wall 401a of the U-shaped magnetic yoke 401, a rotating coil 405 is sleeved outside the iron core 403, a rotating plate 406 is arranged at the upper end of the iron core 403, two ends of the rotating plate 406 correspond to the magnetic poles of the permanent magnet 4a, and the rotating plate 406 can rotate. In this embodiment, the rotating plate 406 includes a passive portion 406a corresponding to the magnetic pole of the permanent magnet 4a, and the passive portion can rotate under the action of the magnetic field force of the magnetic pole of the permanent magnet 4a, as shown in fig. 4, a driving portion 406b is further disposed on the rotating plate 406, the driving portion 406b is linked with the driving plate 501, the rotating plate 406 can drive the contact support to rotate through the driving plate 501 during the rotation process so as to link the moving contact to move, and the driving plate and the rotating plate 406 are coaxially mounted on the upper end of the iron core 403. An iron core sleeve 404 is sleeved outside the iron core 403, a rotating coil 405 is sleeved outside the iron core sleeve 404, and the iron core sleeve 404 is welded on the non-magnetic-conductive plate. The U-shaped yoke 401 is provided with a boss 401b for increasing the magnetic conductive area. The boss 401b is disposed on the bottom surface of the inside of the U-shaped yoke 401 directly below the coil.

As shown in fig. 1: when the rotating coil 405 is not energized, the rotating plate 406 is located at the initial position, and only the magnetic flux φ 1 generated by the pair of permanent magnets 402, 402' is in the rotating magnetic circuit;

as shown in fig. 2: when the rotating coil 405 is fed with a positive pulse, a downward magnetic flux is generated in the iron core 403, the rotating plate 406 is magnetized into an S pole, and the rotating plate 406 rotates in a reverse direction to drive the contact support to rotate so as to link the moving contact to rotate under the repulsive force of the permanent magnet 402 and the attractive force of the permanent magnet 402 ', and the rotating plate 406, the permanent magnet 402', the iron core 403 and the U-shaped magnetic yoke 401 form a closed magnetic loop phi 2;

as shown in fig. 3: when the rotating coil 405 is energized with a reverse pulse, an upward magnetic flux is generated in the iron core 403, the rotating plate 406 is magnetized into an N pole, and under the repulsive force of the permanent magnet 402' and the attractive force of the permanent magnet 402, the rotating plate 406 rotates in the forward direction to drive the contact support to rotate so as to link the moving contact to rotate, and the rotating plate 406, the permanent magnet 402, the iron core 403 and the U-shaped magnetic yoke 401 form a closed magnetic loop phi 3;

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetic system holding structure of a switch, characterized in that: the magnetic system holding structure (4) comprises a U-shaped magnetic yoke (401), a permanent magnet (4a) is fixedly arranged on one side wall (401a) of the U-shaped magnetic yoke (401), an iron core (403) is arranged on the inner side of one side wall (401a) of the U-shaped magnetic yoke (401), a rotating coil (405) is sleeved outside the iron core (403), a rotating plate (406) is arranged at the upper end of the iron core (403), two ends of the rotating plate (406) correspond to magnetic poles of the permanent magnet (4a), and the rotating plate (406) can rotate.

2. A magnetic system holding structure of a switch as claimed in claim 1, wherein: the permanent magnet (4a) is a single permanent magnet or comprises at least one pair of permanent magnets (402, 402') of opposite polarity.

3. A magnetic system holding structure of a switch as claimed in claim 1, wherein: an iron core sleeve (404) is sleeved outside the iron core (403), and a rotating coil (405) is sleeved outside the iron core sleeve (404).

4. A magnetic system holding structure of a switch as claimed in claim 3, wherein: the core sleeve (404) is welded to the non-magnetic conductive plate.

5. A magnetic system holding structure of a switch as claimed in claim 2, wherein: the pair of permanent magnets (402, 402') is located between one side wall of the U-shaped yoke (401) and the rotating plate (406).

6. A magnetic system holding structure of a switch according to claim 1, wherein: and a boss (401b) is arranged on the U-shaped magnetic yoke (401) and used for increasing the magnetic conduction area.

7. A magnetic system holding structure of a switch according to claim 6, wherein: the boss (401b) is arranged on the bottom surface of the inner side of the U-shaped magnetic yoke (401) and is positioned right below the coil.

8. A magnetic system holding structure of a switch according to claim 1, wherein: the rotating plate (406) can drive the contact support to rotate through the transmission plate (501) in the rotating process so as to link the moving contact to move, and the moving contact and the fixed contact are contacted and separated so as to realize the connection and disconnection of the switch.

9. A magnetic system holding structure of a switch as claimed in claim 1, wherein: the rotating plate (406) comprises a driven part (406a) corresponding to the magnetic pole of the permanent magnet (4a), the driven part can rotate under the action of the magnetic field force of the magnetic pole of the permanent magnet (4a), a driving part (406b) is further arranged on the rotating plate (406), and the driving part (406b) is linked with the transmission plate (501).

10. A magnetic system holding structure of a switch as claimed in claim 8, wherein: the driving plate and the rotating plate (406) are coaxially arranged at the upper end of the iron core (403).