CN88200763U - Magnetic over-load protector - Google Patents
Magnetic over-load protector Download PDFInfo
- Publication number
- CN88200763U CN88200763U CN 88200763 CN88200763U CN88200763U CN 88200763 U CN88200763 U CN 88200763U CN 88200763 CN88200763 CN 88200763 CN 88200763 U CN88200763 U CN 88200763U CN 88200763 U CN88200763 U CN 88200763U
- Authority
- CN
- China
- Prior art keywords
- magnet
- runner
- magnetic force
- rotating wheels
- load
- 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- Withdrawn
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- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The utility model discloses a magnetic shaft coupling with an over-load protection function, comprising two rotating wheels (1) and (6) which are provided with shafts, a magnet sheath (2) and a magnet (3). The two rotating wheels transmit torque by the magnetic force of the magnet; when load exceeds the set value, the two rotating wheels oppositely slip; The multi-functional fuse switch can be used as the shaft coupling as well as the brawn trainer of sport appliances.
Description
The utility model relates to a kind of magnetic force overload protection arrangement, belongs to the coupling class.
Common coupling does not have overload protection.When load surpasses specified value, the damage that will produce motor, driving mechanism or coupling.
The purpose of this utility model is to overcome above-mentioned difficulties and a kind of novel magnetic coupling with overload protection function is provided.
Task of the present utility model is finished by following scheme: it is made up of magnetosheath and magnet between two runners, two runners.Magnetosheath and magnet and one of them runner are assembled into an integral body.The magnetic force transmitting torque that relies on magnet to produce between two runners.
Compare with existing coupling, the utlity model has following advantage: 1. overload protection.When load surpasses setting value, drive and produce slip between runner and the load runner, and can not cause the damage of motor, driving mechanism or coupling.2. by the quantity of increase and decrease magnet, size, kind and the position of change magnet, can change the setting value of load.3. owing to adopt permanent magnet to make Force transmission parts, than with electromagnet or simpler, safer with bolt arrangement.
The utility model is described in further detail below in conjunction with embodiment.
Fig. 1 is embodiment's schematic representation of the present utility model.The runner of a tape spool (1) is assembled into an integral body with magnetosheath (2) and magnet (3), and the runner (6) with another tape spool relatively is combined together then.Because magnet (3) is attractive to runner (6),, can drive another rotation when in runner (1) or (6) during any one active rotation.
Magnet (3) can be some, distributes symmetrically and evenly with respect to shaft centre line.The size and the kind of magnet (3), with and the different sizes that will change institute's transmitting torque of quantity and position.Thereby, to same diameter the axle can have different setting moments of torsion with runner.In order to reduce the eddy current that magnet (3) produces at the volley, magnet (3) can have one or more laterally (radially) split surfaces (4).On scheming, can see, on the fitting surface (8) of runner (6), have some spiral grooves (5), feed cooling liquid when being used to transship, in order to avoid it is overheated to rub.
Magnetosheath (2) can be made with nylon or other plastics, must have certain wear resistance.
Runner (6) should be an iron and steel class material, otherwise magnetic force can't work.As making, then can near fitting surface (8), be bumped into ferromagnetic object of other materials.
The utility model can be used for transmitting 0.1～100kW air horsepower, 3000 rev/mins of synchronous speed.
Handle if do the annular knurl embossing at the axial region outer surface of runner (1) and (6), the utility model also can be used as wrist-gimmick drills.
Two runners connect with power source and load respectively, except the runner that adopts tape spool, also can adopt other modes.As tape spool not on the runner, and have the hole, garden of a band keyway, or the like, to adapt to different connection requirements.
Claims (3)
1, a kind of magnetic force overload protection arrangement is characterized in that: it is made up of two runners, magnetosheath and magnet, relies on the magnetic force transmitting torque of magnet between two runners.
2, magnetic force overload protection arrangement as claimed in claim 1 is characterized in that: there is a split surface radially at described magnet middle part.
3, magnetic force overload protection arrangement as claimed in claim 1 is characterized in that: in the described runner one with face that another runner matches on be carved with spiral groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200763 CN88200763U (en) | 1988-01-25 | 1988-01-25 | Magnetic over-load protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200763 CN88200763U (en) | 1988-01-25 | 1988-01-25 | Magnetic over-load protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88200763U true CN88200763U (en) | 1988-09-14 |
Family
ID=4836120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200763 Withdrawn CN88200763U (en) | 1988-01-25 | 1988-01-25 | Magnetic over-load protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88200763U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870097A (en) * | 2010-05-21 | 2010-10-27 | 浙江大学 | Electric screw driver having magnetic force overload protector |
| CN102791206A (en) * | 2009-09-29 | 2012-11-21 | 心血管系统股份有限公司 | Rotational atherectomy device with frictional clutch having magnetic normal force |
| CN105889344A (en) * | 2014-08-30 | 2016-08-24 | 张寅啸 | Magnetic marble shaft coupling |
| CN106017771A (en) * | 2016-05-23 | 2016-10-12 | 奇瑞汽车股份有限公司 | Torque detector |
| CN111664201A (en) * | 2020-04-24 | 2020-09-15 | 清华大学 | Magnetic coupling and power mechanism with same |
-
1988
- 1988-01-25 CN CN 88200763 patent/CN88200763U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791206A (en) * | 2009-09-29 | 2012-11-21 | 心血管系统股份有限公司 | Rotational atherectomy device with frictional clutch having magnetic normal force |
| CN101870097A (en) * | 2010-05-21 | 2010-10-27 | 浙江大学 | Electric screw driver having magnetic force overload protector |
| CN105889344A (en) * | 2014-08-30 | 2016-08-24 | 张寅啸 | Magnetic marble shaft coupling |
| CN106017771A (en) * | 2016-05-23 | 2016-10-12 | 奇瑞汽车股份有限公司 | Torque detector |
| CN106017771B (en) * | 2016-05-23 | 2019-01-25 | 奇瑞汽车股份有限公司 | A kind of torque detecting apparatus |
| CN111664201A (en) * | 2020-04-24 | 2020-09-15 | 清华大学 | Magnetic coupling and power mechanism with same |
| CN111664201B (en) * | 2020-04-24 | 2021-05-18 | 清华大学 | Magnetic coupling and power mechanism with same |
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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 |