CN216749788U - Contact spring built-in type permanent magnetic mechanism - Google Patents
Contact spring built-in type permanent magnetic mechanism Download PDFInfo
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- CN216749788U CN216749788U CN202123183961.5U CN202123183961U CN216749788U CN 216749788 U CN216749788 U CN 216749788U CN 202123183961 U CN202123183961 U CN 202123183961U CN 216749788 U CN216749788 U CN 216749788U
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- contact spring
- pull rod
- iron core
- magnetic conduction
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Abstract
The utility model discloses a built-in type permanent magnetic mechanism of contact spring for the contact compensation when vacuum ac contactor closes a floodgate, its characterized in that: the permanent magnetic mechanism comprises a pull rod, an upper magnetic conduction plate, a coil, a permanent magnet, a lower magnetic conduction plate, an iron core, a contact spring, a magnetic conduction cylinder and a limiting piece. The utility model discloses place the permanent magnetic mechanism in the contact spring in, give the contact compensation and reduce the spring on the basis that reduces contactor axial dimensions, realize vacuum contactor's safe handling. The upper end of the pull rod is provided with a boss matched with the contact spring, and the lower end of the pull rod is provided with threads matched with the locking nut, so that the linkage effect among the contact spring, the pull rod and the iron core is realized, and the switching-on and switching-off operations are completed. The middle of the iron core is provided with a groove and a through hole for placing a contact spring and limiting, so that the iron core is in a floating state, the attraction force during switching on and switching off is better ensured, the requirement on the coaxiality of the whole structure is reduced, and the reliability of a product is improved.
Description
Technical Field
The utility model relates to a built-in type permanent magnetic mechanism of contact spring specifically is a contact compensation arrangement who is used in vacuum ac contactor.
Background
At present, current vacuum ac contactor can increase a contact spring in the structure for compensating contact wearing and tearing and reducing the spring, and the contact spring generally arranges the insulator in through the mode that adds the inserts in, leads to the insulator size to increase, and the installation procedure is also more loaded down with trivial details, and in addition, the insulator passes through the pull rod to be connected with the iron core, for guaranteeing the suction surface, requires highly to the axiality of mechanism, causes product cost to improve greatly.
Disclosure of Invention
In order to overcome the defects, the utility model provides a contact spring built-in type permanent magnetic mechanism for compensate the contact wearing and tearing and prevent the spring, not only simple structure, small, and the iron core that floats has guaranteed the suction surface, and the reliability is higher.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a permanent magnetic mechanism with a built-in contact spring is used for contact compensation when a vacuum alternating current contactor is switched on, and comprises a pull rod, an upper magnetic conduction plate, a coil, a permanent magnet, a lower magnetic conduction plate, an iron core, a contact spring, a magnetic conduction cylinder and a limiting part, wherein the upper magnetic conduction plate and the lower magnetic conduction plate are respectively fixed on the upper end surface and the lower end surface of the magnetic conduction cylinder; the iron core is internally provided with a through hole, the radius of the upper end part of the through hole is increased to form a groove, the middle part of the pull rod penetrates through the groove and the through hole, the two ends of the pull rod are exposed out of the upper end surface and the lower end surface of the iron core, and a limiting piece is fixed on the part, exposed out of the lower end surface of the iron core, of the pull rod, namely the lower end; the upper end part, namely the upper end of the pull rod exposed out of the iron core is provided with a boss, the contact spring is sleeved outside the middle part of the pull rod and positioned in the groove of the iron core, and the upper end of the contact spring is limited and stopped by the boss.
As a further improvement, the locating part is a lock nut, the pull rod is provided with an external thread, the lock nut is locked on the external thread of the pull rod through the internal thread thereof.
As a further improvement of the utility model, the lower end face of the permanent magnet and a gasket are arranged between the lower magnetic conductive plates.
The utility model has the advantages that: the utility model discloses place the permanent magnetic mechanism in the contact spring in, give the contact compensation and reduce the spring on the basis that reduces contactor axial dimensions, realize vacuum contactor's safe handling. The upper end of the pull rod is provided with a boss matched with the contact spring, and the lower end of the pull rod is provided with threads matched with the locking nut, so that the linkage effect among the contact spring, the pull rod and the iron core is realized, and the switching-on and switching-off operations are completed. The middle of the iron core is provided with a groove and a through hole for placing a contact spring and limiting, so that the iron core is in a floating state, the attraction force during switching on and switching off is better ensured, the requirement on the coaxiality of the whole structure is reduced, and the reliability of a product is improved.
Drawings
Fig. 1 is a schematic view of the present invention in an open state;
fig. 2 is the schematic diagram of the utility model showing the closing state.
The following description is made with reference to the accompanying drawings:
1-a pull rod; 2-upper magnetic conductive plate;
3-coil; 4-permanent magnet;
5-lower magnetic conductive plate; 6-iron core;
7-contact spring; 8-magnetic conduction cylinder;
9-a washer; 10-a stopper;
11-boss; 61-through hole;
62-groove.
Detailed Description
The following description of a preferred embodiment of the present invention will be made in conjunction with the accompanying drawings.
Referring to fig. 1-2, for the utility model discloses a built-in type permanent magnetic mechanism of contact spring for contact compensation when vacuum ac contactor closes a floodgate, permanent magnetic mechanism includes pull rod 1, goes up magnetic conduction board 2, coil 3, permanent magnet 4, lower magnetic conduction board 5, iron core 6, contact spring 7, magnetic conduction section of thick bamboo 8, packing ring 9 and locating part 10.
The upper magnetic conduction plate 2 and the lower magnetic conduction plate 5 are respectively fixed on the upper end surface and the lower end surface of the magnetic conduction cylinder 8, namely the magnetic conduction cylinder is fixed with the upper magnetic conduction plate and the lower magnetic conduction plate, and a permanent magnet mechanism is arranged in the magnetic conduction cylinder.
The iron core 6 is movably arranged in the magnetic conduction cylinder 8, and the coil 3 and the permanent magnet 4 are respectively sleeved outside the upper end and the lower end of the iron core 6 and fixed with the magnetic conduction cylinder 8. Namely, the iron core 6 and the permanent magnet 4 are arranged in the middle of the magnetic conduction cylinder 8 to provide permanent magnetic force for maintaining the closing and opening states, and the coil 3 provides electromagnetic force during closing. And a gasket 9 is arranged between the lower end surface of the permanent magnet 4 and the lower magnetic conduction plate 5 for limiting.
The through hole 61 is arranged in the iron core 6, namely at the center, the radius of the upper end part of the through hole 6 is increased to form a groove 62, the middle part of the pull rod 1 penetrates through the groove 62 and the through hole 61, the two ends of the pull rod expose the upper end surface and the lower end surface of the iron core 6, and the lower end surface part, namely the lower end of the pull rod 1, which exposes the iron core 6, is fixedly provided with the limiting piece 10. Namely, the contact spring 7 is placed in a groove 62 in the middle of the iron core, the pull rod 1 penetrates through the contact spring 7 and a through hole 61 in the middle of the iron core, a limiting part 10 fixed at the lower end of the pull rod 1 is a locking nut, an external thread is arranged on the pull rod 1, and the locking nut is locked on the external thread of the pull rod through the internal thread. The limiting piece 10 gives a certain pre-pressure to the contact spring when the locking nut is locked, so that the closing bounce can be reduced.
The utility model discloses a theory of operation does: when the vacuum contactor is in an opening state, referring to fig. 1, the permanent magnetic attraction provided by the permanent magnet overcomes the self-closing force of the vacuum tube, the lower end surface of the iron core is attracted with the lower magnetic conductive plate, and the opening state is maintained; when the vacuum contactor carries out the closing operation, refer to fig. 2, the coil circular telegram produces the magnetic field, goes up the magnetic conduction board and is magnetized and produce ascending suction to the iron core, and the iron core promotes contact spring upward movement, and contact spring promotes the pull rod upward movement, realizes moving, the static contact is closed, moves, the static contact is closed back, and the iron core continues upward movement compression spring, until iron core and last magnetic conduction board actuation, the contact spring give with the pressure of contact be used for compensating the contact wearing and tearing this moment the utility model discloses a contact spring can adjust according to the actual required contact final pressure of product.
Therefore, the utility model discloses place the permanent magnetic mechanism in the contact spring in, give the contact compensation and reduce the spring on the basis that reduces contactor axial dimension, realize vacuum contactor's safe handling. The upper end of the pull rod is provided with a boss matched with the contact spring, and the lower end of the pull rod is provided with threads matched with the locking nut, so that the linkage effect among the contact spring, the pull rod and the iron core is realized, and the switching-on and switching-off operations are completed. The middle of the iron core is provided with a groove and a through hole for placing a contact spring and limiting, so that the iron core is in a floating state, the attraction force during switching on and switching off is better ensured, the requirement on the coaxiality of the whole structure is reduced, and the reliability of a product is improved.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art will be able to make many changes and modifications to the invention using the method and techniques disclosed above, or to modify and adapt equivalent embodiments to equivalent variations, without departing from the scope of the invention. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a built-in type permanent magnetic mechanism of contact spring for the contact compensation when vacuum AC contactor closes a floodgate which characterized in that: the permanent magnetic mechanism comprises a pull rod (1), an upper magnetic conduction plate (2), a coil (3), a permanent magnet (4), a lower magnetic conduction plate (5), an iron core (6), a contact spring (7), a magnetic conduction cylinder (8) and a limiting piece (10),
the upper magnetic conduction plate (2) and the lower magnetic conduction plate (5) are respectively fixed on the upper end surface and the lower end surface of the magnetic conduction cylinder (8), the iron core (6) is movably arranged in the magnetic conduction cylinder (8), and the coil (3) and the permanent magnet (4) are respectively sleeved outside the upper end and the lower end of the iron core (6) and are fixed with the magnetic conduction cylinder (8);
a through hole (61) is formed in the iron core (6), the radius of the upper end part of the through hole (61) is increased to form a groove (62), the middle part of the pull rod (1) penetrates through the groove (62) and the through hole (61), two ends of the pull rod are exposed out of the upper end surface and the lower end surface of the iron core (6), and a limiting piece (10) is fixed on the lower end part, namely the lower end of the pull rod (1), which is exposed out of the lower end surface of the iron core (6);
the pull rod exposes the upper end part of the iron core, namely the upper end, a boss (11) is arranged on the upper end of the pull rod, the contact spring (7) is sleeved outside the middle part of the pull rod (1) and is positioned in a groove (62) of the iron core (6), and the upper end of the contact spring is limited and stopped by the boss (11).
2. The contact spring built-in type permanent magnet mechanism according to claim 1, characterized in that: the limiting part (10) is a locking nut, the pull rod (1) is provided with an external thread, and the locking nut is locked on the external thread of the pull rod through the internal thread of the locking nut.
3. The contact spring built-in type permanent magnet mechanism according to claim 1, characterized in that: and a gasket (9) is arranged between the lower end face of the permanent magnet (4) and the lower magnetic conduction plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123183961.5U CN216749788U (en) | 2021-12-17 | 2021-12-17 | Contact spring built-in type permanent magnetic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123183961.5U CN216749788U (en) | 2021-12-17 | 2021-12-17 | Contact spring built-in type permanent magnetic mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216749788U true CN216749788U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123183961.5U Active CN216749788U (en) | 2021-12-17 | 2021-12-17 | Contact spring built-in type permanent magnetic mechanism |
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| CN (1) | CN216749788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887786A (en) * | 2017-12-06 | 2019-06-14 | 上海航空电器有限公司 | It is a kind of to press switch and application method with magnetic holding function |
-
2021
- 2021-12-17 CN CN202123183961.5U patent/CN216749788U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887786A (en) * | 2017-12-06 | 2019-06-14 | 上海航空电器有限公司 | It is a kind of to press switch and application method with magnetic holding function |
| CN109887786B (en) * | 2017-12-06 | 2023-09-12 | 上海航空电器有限公司 | Push switch with magnetic holding function and use method |
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