CN2057028U - Magnetic switch - Google Patents
Magnetic switch Download PDFInfo
- Publication number
- CN2057028U CN2057028U CN 89219781 CN89219781U CN2057028U CN 2057028 U CN2057028 U CN 2057028U CN 89219781 CN89219781 CN 89219781 CN 89219781 U CN89219781 U CN 89219781U CN 2057028 U CN2057028 U CN 2057028U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- switch
- electromagnet
- utility
- magnetic switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- Electromagnets (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a magnetic switch, belonging to a control circuit apparatus. The utility model overcomes the shortage of the existing link minitype earth leakage protector of complicated structure of the switch and unable to quick close. With the principle that a permanent magnet and an energizing electromagnet are repellent at the same pole and the phenomenon that the permanent magnet and a power-off electromagnet core are sucked and held, a magnetic switch structure with simple structure which can quick close and quick break reliably just with an electromagnet and a permanent magnet without complicated structure of mechanical. The closing and breaking time is shorter than 20 ms.
Description
The utility model relates to a kind of magnetic switch that is used for small-sized earth leakage protective device, belongs to the control apparatus class.
The existing used switch of single-phase small-sized earth leakage protective device is the link-type switch; manual closing; its closure is relevant with the action speed of hand; and because the structure more complicated; be difficult on the technology reach and make two groups of contacts of switch synchronous; if one group of contact is connected earlier; and connection is phase line just; this moment, load end had the people to get an electric shock; though this switch has free handle; but because another organizes also access failure of contact, control circuit does not have electricity not work, and earth leakage protective device just can not prevent and protect the person to get an electric shock effectively like this.
In order to address this problem, common way is to make switch have speed to close function.Existing large-scale air switch just has this function.When the hand closed action arrived certain position, inner two groups of contact rapid closings (this moment is irrelevant with the action of hand) had so just solved two groups of nonsynchronous problems in contact from " speed is closed ".But be difficult to implement this structure for the used switch of small-sized earth leakage protective device.Because small-sized earth leakage protective device 1) want the cube little by 2) require cost low, so will adopt the structure of large-scale air switch will run into very big difficulty.
The purpose of this utility model is that a kind of magnetic switch that is fit to small-sized earth leakage protective device will be provided.It is simple in structure, can solve the existing nonsynchronous problem of switch closure (i.e. " speed is closed " problem) effectively.
The purpose of this utility model is achieved in that the principle of utilizing permanent magnet and energising electromagnet homopolar-repulsion and permanent magnet and outage electromagnet core are inhaled mutually and the phenomenon that keeps realizes that the speed of switch closes.
The utility model is because only need electromagnet and permanent magnet; so rapidity simple in structure, as to utilize the magnet adhesive and scold out does not have complex mechanical construction; so be particularly suitable for small-sized earth leakage protective device switch, and other characteristic is not less than all and now uses switch.
The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the profile according to the magnetic switching device that the utility model proposes.
Below in conjunction with details and the working condition of accompanying drawing 1 detailed description according to the concrete device that the utility model proposes.
This device comprises that two solenoids that have a soft iron iron core (going up electromagnet coil (1) and lower electromagnet coil (2)) and one are the moving plate structure (3) that has moving contact (5) and permanent magnet (4) of fulcrum with (7), and (6) are fixed contact.
As shown in Figure 1, switch is in the disjunction state, coil (1) pass to direct current make coil (1) produce down N go up S magnetic field with permanent magnet (4) scold to electromagnet coil (2) and with firmly adhesive of electromagnet (2), again owing to moving contact (5) and permanent magnet (4) all are fixed on the moving plate (3), so moving contact (5) is connected with fixed contact (6), has realized " closing " function of switch.As needs during with the circuit disjunction, as long as pass to the magnetic field that direct current makes it to produce N under the S to coil (2), just permanent magnet (4) can be scolded to electromagnet (1) and remain on and (1) attracted position, moving contact (5) disconnects with fixed contact (6), has so just realized " branch " function of switch.
The utility model also can move to fulcrum (7) between the permanent magnet (4) and moving contact (5) on the moving plate (3).
The utility model can also get up to pass to simultaneously direct current to finish deciliter function as mentioned above with two electromagnet coil strings (also) connection up and down.
The closure of switch contact, disjunction and permanent magnet interlock have saved many labyrinths of regular tap, and action is very rapid, through testing whole course of action less than 20mS.The just very simple speed of switchette that realized of the utility model is closed speed branch function.
Claims (3)
1, switchette particularly is applied to the switching device on the earth leakage protective device, it is characterized in that the coil (1) (2) that has two to have the soft iron iron core, and a moving plate structure that moving contact (5) and permanent magnet (4) are fused is arranged therebetween.
2, according to the described device of claim 1, it is characterized in that driving the electromagnet coil of permanent magnet motion, can have only an energising also can two coils be switched on simultaneously during work by string (also) connection.
3, according to the described device of claim 1, it is characterized in that permanent magnet (4) and moving contact (5) all are fixed on the moving plate (3), fulcrum (7) can also can be gone up between permanent magnet (4) and the moving contact (5) at moving plate (3) at an end of moving plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219781 CN2057028U (en) | 1989-11-20 | 1989-11-20 | Magnetic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219781 CN2057028U (en) | 1989-11-20 | 1989-11-20 | Magnetic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2057028U true CN2057028U (en) | 1990-05-09 |
Family
ID=4874581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89219781 Withdrawn CN2057028U (en) | 1989-11-20 | 1989-11-20 | Magnetic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2057028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219198A (en) * | 2013-04-24 | 2013-07-24 | 赵德连 | Magneto-electric kinetic energy electric control switch |
| CN111064164A (en) * | 2019-11-12 | 2020-04-24 | 广东电网有限责任公司 | Double-protection box-type substation |
-
1989
- 1989-11-20 CN CN 89219781 patent/CN2057028U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219198A (en) * | 2013-04-24 | 2013-07-24 | 赵德连 | Magneto-electric kinetic energy electric control switch |
| CN103219198B (en) * | 2013-04-24 | 2015-05-20 | 赵德连 | Magneto-electric kinetic energy electric control switch |
| CN111064164A (en) * | 2019-11-12 | 2020-04-24 | 广东电网有限责任公司 | Double-protection box-type substation |
| CN111064164B (en) * | 2019-11-12 | 2021-11-12 | 广东电网有限责任公司 | Double-protection box-type substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |