CN203706984U - Electromagnetic switch with a plurality of switch levels - Google Patents
Electromagnetic switch with a plurality of switch levels Download PDFInfo
- Publication number
- CN203706984U CN203706984U CN201420056483.2U CN201420056483U CN203706984U CN 203706984 U CN203706984 U CN 203706984U CN 201420056483 U CN201420056483 U CN 201420056483U CN 203706984 U CN203706984 U CN 203706984U
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- China
- Prior art keywords
- drive link
- distance
- contact
- rotating shaft
- electromagnetic switch
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Abstract
Provided is an electromagnetic switch with a plurality of switch levels. The electromagnetic switch comprises a contact mechanism which comprises a movable contact piece and a fixed contact piece having a common contact piece and a plurality of sub-level contact pieces; a scale division rotation mechanism which comprises a rotating shaft, a positioning spring and a driving ring; a transmission mechanism which comprises a first transmission rod and a second transmission rod; an electromagnetic device having an excitation coil and a movable iron core; and a reset spring. The driving ring is rotatably connected with the second transmission rod. The movable contact piece is connected with the rotating shaft. The movable iron core is connected with the first transmission rod. As long as the movable iron core carries out a round trip of reciprocal motion relative to the excitation coil, the movable contact piece rotates along the rotating shaft for a certain angle. The electromagnetic switch can be arranged at a distance to achieve device remote control of speed regulation and the like.
Description
Technical field
The utility model relates to a kind of electromagnetic switch, particularly a kind of electromagnetic switch of many gears.
Background technology
In the electromagnetic switch such as electromagnetic relay or electromagnetic contactor, electromagnetic switch generally includes to be had the calutron of magnet exciting coil and movable core and has fixed contact therefor and the contact mechanism of movable contact, the magnetic force that described movable core is produced by described magnet exciting coil drives, successively switch on and off the electric current in magnet exciting coil, can make movable core carry out a reciprocating motion back and forth with respect to magnet exciting coil, the contact mechanism that this kind of reciprocating motion can promote to be made up of movable contact and fixed contact therefor is from closure state to open mode or from open mode to closure state.
The gear that existing electromagnetic switch can be used for making current only has one conventionally, and its use is subject to certain restrictions, and therefore a kind of electromagnetic switch with multiple switch gears of research and development, has certain practical value.
Summary of the invention
The purpose of this utility model is that a kind of electromagnetic switch with multiple switch gears will be provided.
In order to realize the purpose of this utility model, the utility model provides a kind of electromagnetic switch, this kind has the electromagnetic switch of multiple switch gears, it is characterized in that, it comprises: contact mechanism, described contact mechanism comprises movable contact and fixed contact therefor, and described fixed contact therefor comprises a public contact and multiple stepping contact; Calibration rotating mechanism, described calibration rotating mechanism comprises rotating shaft and is sheathed on the driving ring in described rotating shaft, described rotating shaft and described movable contact are fixed; Calutron, described calutron comprises magnet exciting coil and movable core; Transmission mechanism, described transmission mechanism is connected with described movable core and described driving ring respectively; Back-moving spring; Wherein, described movable core can move back and forth with respect to described magnet exciting coil, and described movable core often carries out a reciprocating motion back and forth, and described movable contact all rotates certain angle with described rotating shaft.
This kind has the electromagnetic switch of multiple switch gears by the electromagnetic action of calutron, make the movable contact being connected with calibration rotating mechanism carry out calibration rotation, the movable contact that this calibration rotates coordinates with the fixed contact therefor with a public contact and multiple stepping contacts, to realize many driving switch operations of electromagnetic switch.This kind has the electromagnetic switch of multiple switch gears, can be arranged on the distant place that staff cannot contact, and by connecting and interruption of power supply electric current, just can realize cyclic switching or operation between many gears of switch, is conducive to the Long-distance Control that speed governing etc. is installed.
Preferably, the second drive link that described transmission mechanism comprises the first drive link and is rotationally connected with described the first drive link.
Preferably, described electromagnetic switch also comprises shell, described transmission mechanism comprises the first drive link and the second drive link, one end of described the first drive link and described shell are rotationally connected, one end of the other end of described the first drive link and described the second drive link is rotationally connected, the other end of described the second drive link and described driving ring are rotationally connected, and described movable core and described the first drive link are rotationally connected.
The junction of described movable core and described the first drive link is the first distance to the distance of the junction of described shell and described the first drive link, the junction of described the second drive link and described the first drive link is second distance to the distance of the junction of described shell and described the first drive link, and described second distance is preferably more than described the first distance.
In calutron, the ultimate range that movable core moves back and forth with respect to magnet exciting coil and the actuating force of calutron are closely related, its reciprocating ultimate range is less, needed actuating force is also less, for example, in the calutron by DC driven, actuating force approximately and square being inversely proportional to of its ultimate range, and need to moving larger distance conventionally, driving ring just can make movable contact turn over needed angle with rotating shaft, make described second distance be greater than described the first distance, be conducive to reduce the actuating force of electromagnetic switch, and improve the reliability of electromagnetic switch.
Preferably, described second distance is not less than 130% of described the first distance; More preferably, described second distance is not less than 150% of described the first distance.
Described calibration rotating mechanism can comprise retainer spring; Described rotating shaft can comprise ratchet.Preferably, described rotating shaft also comprises location notch and ratchet, and described calibration rotating mechanism comprises ball, and described ball is arranged on the end of retainer spring and can snaps in location notch.Be conducive to like this activity orientation of calibration rotating mechanism, and be conducive to reduce its calibration and rotate required actuating force.
In a preferred embodiment, described driving ring comprises the dop may be stuck in ratchet, and described rotating shaft comprises location notch and ratchet, and described calibration rotating mechanism comprises retainer spring and ball, and described ball is arranged on the end of retainer spring and can snaps in location notch.
Described fixed contact therefor can comprise insulation board, and described public contact and stepping contact are all fixed with described insulation board.
Described back-moving spring can be connected with movable core, also can be connected with driving ring.In a preferred embodiment, one end of back-moving spring is connected with shell, and the other end of back-moving spring is connected with driving ring.
The quantity of described ratchet is usually located between 4 to 10, is preferably located between 4 to 8; Described location notch quantity is usually located between 4 to 10, is preferably located between 4 to 8.
Accompanying drawing explanation
Figure l is the structural representation of electromagnetic switch of the present utility model.
Fig. 2 is the perspective exploded view of the calibration rotating mechanism in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
With reference to figure l and Fig. 2, electromagnetic switch of the present utility model comprises shell 11, contact mechanism, calibration rotating mechanism, transmission mechanism, calutron and back-moving spring 14, wherein, contact mechanism, calibration rotating mechanism, transmission mechanism, calutron and back-moving spring 14 are all positioned at shell 11.On shell 11, be provided with electric connecting terminals (not drawing in the drawings), shell 11 is preferably formed by plastics.
Contact mechanism comprises movable contact 22 and fixed contact therefor 23, fixed contact therefor 23 comprises annular insulation board 235 and is fixed on public contact 230 and four the stepping contacts 231,232,233,234 on annular insulation board 235, wherein, public contact 230 and four stepping contacts 231,232,233,234 are all by metal material is formed.
Calibration rotating mechanism comprises rotating shaft 25, retainer spring 24, ball 27 and is sheathed on the driving ring 17 in rotating shaft 25, rotating shaft 25 comprises location notch 251 and ratchet 252, driving ring 17 comprises dop 172, ball 27 is arranged on the end of retainer spring 24 and snaps in location notch 251, the dop 172 of driving ring 17 is stuck in ratchet 252, retainer spring 24 is arranged in the sleeve pipe 111 fixing with shell 11, and one end of retainer spring 24 is connected with shell 11.
Transmission mechanism comprises the first drive link 15 and the second drive link 16; One end of the first drive link 15 is rotationally connected by rotating shaft 18 and shell 11, and the other end of the first drive link 15 is rotationally connected by one end of rotating shaft 20 and the second drive link 16, and the other end of the second drive link 16 is rotationally connected by rotating shaft 21 and driving ring 17.
Calutron comprises coiling framework 28, be wound on the magnet exciting coil 12 of coiling on framework 28, with fixed iron core 13 and movable core 26 that the framework 28 that winds the line contacts, the upper end of movable core 26 is rotationally connected by rotating shaft 19 and the first drive link 15.
Be arranged in central cavity at coiling framework 28 and be provided with back-moving spring 14, the upper end of back-moving spring 14 is connected with the lower end of movable core 26, the lower end of back-moving spring 14 is connected with fixed iron core 13, so that for movable core 26 provides roughly elastic force upwards, the suffered elastic force of movable core 26 can pass to driving ring 17 by transmission mechanism, so that driving ring 17 resets.
In the present embodiment, the junction of the second drive link 16 and the first drive link 15 is approximately that the junction of movable core 26 and the first drive link 15 is to 2 times of the distance of rotating shaft 18 to the distance of rotating shaft 18.Like this, movable contact 22 is realized and is rotated the distance that needed movable core 26 moves from a gear switch to the calibration of another gear and can greatly reduce, can effectively reduce the adhesive distance of movable core 26 in calutron, be conducive to improve the reliability of electromagnetic switch.
In the time that magnet exciting coil 12 does not have input current, movable contact 22 makes to connect with public contact 230 and a certain stepping contact of fixed contact therefor 23, and this electromagnetic switch is in a certain switch gear; While thering is no input current as magnet exciting coil 12, movable contact 22 is in the position shown in Fig. 1, and at this moment movable contact 22 makes the public contact 230 of fixed contact therefor 23 connect with stepping contact 233.
Then connect the electric current in the magnet exciting coil 12 shown in Fig. 1, the magnetic drive movable core 26 that electric current in magnet exciting coil 12 produces moves downward, because driving ring 17 is connected with movable core 26 by the transmission mechanism being made up of with the second drive link 16 the first drive link 15, moving downward of movable core 26 can drive driving ring 17 to rotate with rotating shaft 25, its rotation direction is the rotation direction ω shown in Fig. 1, and movable contact 22 is fixedly connected with rotating shaft 25, like this rotation of rotating shaft 25 by drive movable contact 22 also in rotational direction ω rotate certain angle, the public contact 230 of fixed contact therefor 23 is connected with stepping contact 234, realized the switching of switch gear.
Then interrupt the electric current in magnet exciting coil 12, at this moment due to the magnetic force that loses electric current and produce, movable core 26 moves upward under the effect of back-moving spring 14, and be returned to the position shown in Fig. 1 by the transmission mechanism promotion driving ring 17 being formed by the first drive link 15 and the second drive link 16, because the ratchet 252 of rotating shaft 25 has directivity, driving ring 17 matches with ratchet 252, can make driving ring 17 in the time being returned to the position shown in Fig. 1 along the contrary direction of rotation direction ω, can't drive rotating shaft 25 and movable contact 22 to also return to the position shown in Fig. 1.
In a word, successively connect and interrupt the electric current in magnet exciting coil, can make movable contact rotate certain angle with rotating shaft, making electromagnetic switch from a switch gear switch to another switch gear.Easily find, constantly connect and interrupt the electric current in magnet exciting coil, can make four stepping contacts of movable contact 22 circulating contact 231,232,233,234, to realize the cycling switch work between multiple gears of electromagnetic switch.In the present embodiment, movable contact 22 direction detouring that circulates is rotation direction ω.
Here it should be noted that, this kind of a kind of electromagnetic switch with multiple switch gears can not arrange special disconnection gear.
Although shown and described and thought at present preferred embodiment of the present utility model, apparent, those skilled in the art can carry out various changes and improvements, and does not deviate from the scope of the present utility model that appended claims limits.
Claims (4)
1. an electromagnetic switch with multiple switch gears, is characterized in that, it comprises: shell; Contact mechanism, described contact mechanism comprises movable contact and fixed contact therefor, described fixed contact therefor comprises a public contact and multiple stepping contact; Calibration rotating mechanism, described calibration rotating mechanism comprises retainer spring, ball, has the rotating shaft of location notch and ratchet and is sheathed on the driving ring in described rotating shaft, described rotating shaft and described movable contact are fixed, described ball is arranged on the end of described retainer spring and can snaps in described location notch, and described driving ring comprises the dop may be stuck in described ratchet; Calutron, described calutron comprises magnet exciting coil and movable core; Transmission mechanism, described transmission mechanism comprises the first drive link and the second drive link, one end of described the first drive link and described shell are rotationally connected, one end of the other end of described the first drive link and described the second drive link is rotationally connected, the other end of described the second drive link and described driving ring are rotationally connected, and described movable core and described the first drive link are rotationally connected; Back-moving spring; Wherein, the junction of described movable core and described the first drive link is the first distance to the distance of the junction of described shell and described the first drive link, the junction of described the second drive link and described the first drive link is second distance to the distance of the junction of described shell and described the first drive link, described second distance is greater than described the first distance, described movable core can move back and forth with respect to described magnet exciting coil, described movable core often carries out a reciprocating motion back and forth, and described movable contact all rotates certain angle with described rotating shaft.
2. a kind of electromagnetic switch with multiple switch gears as claimed in claim 1, is characterized in that, described back-moving spring is connected with described movable core.
3. a kind of electromagnetic switch with multiple switch gears as claimed in claim 1, is characterized in that, described back-moving spring is connected with described driving ring.
4. a kind of electromagnetic switch with multiple switch gears as described in one of claims 1 to 3, is characterized in that, described second distance is not less than 150% of described the first distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056483.2U CN203706984U (en) | 2014-01-29 | 2014-01-29 | Electromagnetic switch with a plurality of switch levels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056483.2U CN203706984U (en) | 2014-01-29 | 2014-01-29 | Electromagnetic switch with a plurality of switch levels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203706984U true CN203706984U (en) | 2014-07-09 |
Family
ID=51057384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056483.2U Expired - Fee Related CN203706984U (en) | 2014-01-29 | 2014-01-29 | Electromagnetic switch with a plurality of switch levels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203706984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006619A (en) * | 2015-08-04 | 2015-10-28 | 中国电子科技集团公司第四十一研究所 | Knob type manual step attenuator |
| CN106206133A (en) * | 2014-01-29 | 2016-12-07 | 许彐琼 | There is the electromagnetic switch of multiple switch position |
-
2014
- 2014-01-29 CN CN201420056483.2U patent/CN203706984U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106206133A (en) * | 2014-01-29 | 2016-12-07 | 许彐琼 | There is the electromagnetic switch of multiple switch position |
| CN105006619A (en) * | 2015-08-04 | 2015-10-28 | 中国电子科技集团公司第四十一研究所 | Knob type manual step attenuator |
| CN105006619B (en) * | 2015-08-04 | 2018-06-08 | 中国电子科技集团公司第四十一研究所 | A kind of knob is manually stepped attenuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20170129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |