CN2660677Y - Permanent magnet mechanism of low voltage vacuum contact - Google Patents
Permanent magnet mechanism of low voltage vacuum contact Download PDFInfo
- Publication number
- CN2660677Y CN2660677Y CN 200320123838 CN200320123838U CN2660677Y CN 2660677 Y CN2660677 Y CN 2660677Y CN 200320123838 CN200320123838 CN 200320123838 CN 200320123838 U CN200320123838 U CN 200320123838U CN 2660677 Y CN2660677 Y CN 2660677Y
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- China
- Prior art keywords
- yoke
- permanent magnet
- ring
- voltage vacuum
- sleeve
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Abstract
The utility model discloses a permanent-magnetic structure designed for a low-voltage vacuum contactor. The utility model comprises a yoke motherboard (1), an electromagnetic coil (2), an external yoke sleeve (3), a permanent magnet (4), a ring-type concave inner yoke (5), a T-shape moving armature (6), a force-transmission shaft (7), a permanent magnet formed by an upper yoke cover (8) and a closed magnetic circuit with electromagnetic integration. The utility model has the advantages of a simple structure, less parts and components, reliable and safe, power efficient and long service life.
Description
Technical field
The utility model relates to low pressure confession, field of power distribution, particularly relates to the branch of low-voltage vacuum contactor, the technical field of combined floodgate driving mechanism.
Background technology
Traditional low-voltage vacuum contactor, what its driving mechanism adopted is electromagnetic drive mechanism, needs electromagnetic field to keep behind the combined floodgate, need keep the solenoid operating time and switch on for a long time, there are shortcomings such as energy consumption height, big, the easy scaling loss of noise in such structure.The permanent magnet mechanism of Chu Xianing is simple in structure with it in recent years, and component number is few, and reliability and fail safe are good, economize on electricity, and advantages such as long-life cause common concern and obtain constantly improving and innovation.Disclosed Chinese patent has: ZL98232979.2, ZL99209050.4 etc.Technically conventional low vacuum contactor driving mechanism has been carried out bigger improvement, but, it is unreasonable that this driving mechanism exists magnetic Circuit Design, the installation site inconvenience of mechanism, and the permanent magnet shaped design is improper to cause defectives such as the magnetic energy utilance is low.
The utility model content
The purpose of this utility model is to overcome above-mentioned many shortcomings and defective, provide a kind of volume little, more reasonable structure, install more conveniently, the magnetic circuit leakage field is little, magnetic energy utilance height, economize on electricity, long-life, satisfy the driving of low-voltage vacuum contactor fully and keep the electromagnetism and the permanent magnetism of function and technical conditions to accomplish by joint efforts, divide, the permanent magnet mechanism of the bistable state low-voltage vacuum contactor of maintenance.It has simplified the mechanical movement chain, has saved the supplemental support spring, closes, separating brake do not need after putting in place electric energy to keep, and keeps by permanent magnetic circuit is closed.It had both been realized that direct current is instantaneous and has closed, divides, and can realize that again the pulse power closes, divides, and can also realize computer networking control.It has improved the fail safe and the reliability of low-voltage vacuum contactor driving mechanism, has reduced manufacturing cost and maintenance cost.
For achieving the above object, the utility model adopts following technical scheme:
A kind of permanent magnet mechanism of low-voltage vacuum contactor, comprise lower yoke base plate, solenoid, outer yoke sleeve, permanent magnet, ring-like recessed inner yoke, T type moving armature, power conduction axis, the integrated closed magnetic circuit of permanent magnetism, electromagnetism that the upper magnet yoke lid is formed is characterized in that:
1. screw thread cooperates connection between the cylindrical of the interior circle of the lower yoke base plate in above-mentioned permanent magnetism, the integrated closed magnetic circuit of electromagnetism and outer yoke sleeve;
2. the permanent magnet in above-mentioned permanent magnetism, the integrated closed magnetic circuit of electromagnetism is seated in the internal upper part usefulness high strength alite paste bonding location of ring-like recessed inner yoke and outer yoke sleeve, and solenoid is placed in the chamber of ring-like recessed inner yoke and outer yoke sleeve and the formation of lower yoke base plate;
3. the power conduction axis in above-mentioned permanent magnetism, the integrated closed magnetic circuit of electromagnetism cooperates with T type moving armature screw thread and fasteningly is placed in the central blind hole of lower yoke base plate by the center hole of ring-like recessed inner yoke and the center hole of solenoid, the upper magnet yoke lid be enclosed within power conduction axis top and with the outer yoke upper cartridge between screw thread cooperate connection.
The central part of the lower yoke base plate of the permanent magnet mechanism of above-mentioned a kind of low-voltage vacuum contactor is provided with boss, and the boss center is provided with blind hole, is provided with the installation counterbore near outer edge.
The top inner periphery of the outer yoke sleeve of the permanent magnet mechanism of above-mentioned a kind of low-voltage vacuum contactor is provided with step, and last subordinate's circumferential step plane of recessed one-tenth plane, the top of ring-like recessed inner yoke and T type moving armature is an adhesive face.
Lower yoke negative central part of the present utility model is provided with boss, and purpose is poly-magnetic and reduces leakage field when the adhesive of T type moving armature lower surface.The boss center is provided with blind hole, and purpose is coordinate force axis of guide positioning and guiding.
What the utility model permanent magnet adopted is sintered NdFeB watt type permanent magnet, and purpose is enough magnetic energy works done to be provided and to reduce leakage field greatly for whole magnetic circuit.
Power conduction axis of the present utility model adopts non-magnetic conductive metal silicon bronze or 1Cr18Ni9Ti material to make, reduce friction when purpose is that the power conduction axis is made back and forth movement and between the central blind hole of the centre bore of upper magnet yoke lid and lower yoke base plate resistance and magnetic attraction improve mechanical endurance.
The utility model T type moving armature and ring-like recessed inner yoke top is recessed to become the design that matches of the shape on plane, and purpose is enough adhesive confining forces and accurate positioning function.
When power conduction axis of the present utility model cooperated with lower yoke base plate central blind hole, enough air gaps should be left in the blind hole bottom, and purpose is that preventing to clash into the adhesive face suction that causes magnetic circuit reduces.Power conduction axis top radially is provided with through hole, and purpose is to connect the vacuum contactor contact component.
Description of drawings
Fig. 1 is the axial cut-away view of "on" position of the permanent magnet mechanism of a kind of low-voltage vacuum contactor of the utility model.
The permanent magnet mechanism of a kind of low-voltage vacuum contactor shown in Figure 1 is by lower yoke base plate 1, solenoid 2, outer yoke sleeve 3, permanent magnet 4, ring-like recessed inner yoke 5, T type moving armature 6, power conduction axis 7, upper magnet yoke lid 8 permanent magnetism of forming, the integrated closed magnetic circuit of electromagnetism.
Embodiment
The course of work of the utility model embodiment is: during electronic separating brake, impose on solenoid 2 instantaneous reverse currents by external circuit, T type moving armature 6 moves upward to terminal point together with power conduction axis 7 under the effect of vacuum contactor tripping spring and the self-closing power of contact, the lower plane middle part adhesive in the last plane of T type moving armature 6 and the upper magnet yoke lid 8 is at this moment finished separating brake and kept.During electric switch-on, impose on solenoid 2 instantaneous positive phase currents by external circuit, T type moving armature 6 moves downward terminal point together with power conduction axis 7 under the effect of electromagnetic force, the combined floodgate maintenance is finished in the boss plane adhesive that the central part of the lower surface of T type moving armature 6 and lower yoke base plate 1 was provided with when this moment, T type moving armature last subordinate's circumferential step plane of 6 was with recessed baseplane, the top adhesive of ring-like recessed inner yoke 5, so far finishes a branch, combined floodgate work period.
Claims (3)
1. the permanent magnet mechanism of a low-voltage vacuum contactor, comprise the integrated closed magnetic circuit of permanent magnetism, electromagnetism that lower yoke base plate 1, solenoid 2, outer yoke sleeve 3, permanent magnet 4, ring-like recessed inner yoke 5, T type moving armature 6, power conduction axis 7, upper magnet yoke lid 8 are formed, it is characterized in that:
1. screw thread cooperates connection between the cylindrical of the interior circle of the lower yoke base plate 1 in above-mentioned permanent magnetism, the integrated closed magnetic circuit of electromagnetism and outer yoke sleeve 3;
2. the internal upper part that is seated in ring-like recessed inner yoke 5 and outer yoke sleeve 3 of the permanent magnet 4 in above-mentioned permanent magnetism, the integrated closed magnetic circuit of electromagnetism is with high-strength adhesive bonding location, and solenoid 2 is placed in the chamber that ring-like recessed inner yoke 5 and outer yoke sleeve and lower yoke base plate form;
3. the power conduction axis 7 in above-mentioned permanent magnetism, the integrated closed magnetic circuit of electromagnetism cooperates with T type moving armature screw thread and fasteningly is placed in the central blind hole of lower yoke base plate 1 by the center hole of ring-like recessed inner yoke 5 and the center hole of solenoid 2, upper magnet yoke lid cover 8 power conduction axis 7 tops and with outer yoke sleeve 3 tops between screw thread cooperate connection.
2. the permanent magnet mechanism of a kind of low-voltage vacuum contactor according to claim 1, it is characterized in that lower yoke negative 1 central part be provided with boss, the boss center is provided with blind hole, is provided with the installation counterbore near outer edge.
3. the permanent magnet mechanism of a kind of low-voltage vacuum contactor according to claim 1, the top inner periphery that it is characterized in that outer yoke sleeve 3 is provided with step, and last subordinate's circumferential step plane of recessed one-tenth plane, the top of ring-like recessed inner yoke 5 and T type moving armature 6 is an adhesive face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123838 CN2660677Y (en) | 2003-11-12 | 2003-11-12 | Permanent magnet mechanism of low voltage vacuum contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123838 CN2660677Y (en) | 2003-11-12 | 2003-11-12 | Permanent magnet mechanism of low voltage vacuum contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660677Y true CN2660677Y (en) | 2004-12-01 |
Family
ID=34348891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320123838 Expired - Lifetime CN2660677Y (en) | 2003-11-12 | 2003-11-12 | Permanent magnet mechanism of low voltage vacuum contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2660677Y (en) |
-
2003
- 2003-11-12 CN CN 200320123838 patent/CN2660677Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JILIN YONGDA GROUP CO.,LTD. Free format text: FORMER NAME OR ADDRESS: JILIN WING TAI GROUP CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: No. 45-1 Jilin street, hi tech Zone, Jilin, Jilin Province: 132013 Patentee after: Jilin Yongda Group Co., Ltd Address before: No. 45-1 Jilin street, hi tech Zone, Jilin, Jilin Province: 132013 Patentee before: Jilin Yongda Group Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131112 Granted publication date: 20041201 |