CN104405490B - A kind of variable-speed clutch - Google Patents
A kind of variable-speed clutch Download PDFInfo
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- CN104405490B CN104405490B CN201410664720.8A CN201410664720A CN104405490B CN 104405490 B CN104405490 B CN 104405490B CN 201410664720 A CN201410664720 A CN 201410664720A CN 104405490 B CN104405490 B CN 104405490B
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- disk
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- adhesive disk
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Abstract
It is of the invention including belt pulley,It is socketed in the power input shaft in belt pulley connecting hole,It is fixed on the fixed disk on belt pulley lateral surface,The big adhesive disk being connected with fixed disk,The iron core that the drive plate and relative power input shaft being fixed on power input shaft by flat key are fixedly installed,There is cavity on the side of drive plate,Iron core is accommodate in cavity,The coil relative with adhesive disk is provided with iron core,Fixed disk is additionally provided with groove,Lifting magnet is provided with groove,Lifting magnet is arranged on power input shaft,It is evenly arranged on the outer circumference surface of lifting magnet in multiple permanent magnet fixed disks and is provided with the soft magnetic bodies of the ring-type relative with permanent magnet,During coil electricity,Adhesive disk compresses drive plate under the influence of a magnetic field,During coil blackout,Adhesive disk departs from drive plate in the presence of spring leaf,Variable-speed clutch of the invention can carry out speed governing to equipment,Save energy,Reduce wear and tear in machines and improve machine operation efficiency.
Description
Technical field
Have using electromagnetic clutch control device the present invention relates to a kind of water cooling system of engine, more particularly to one kind
The speed control device of different rotating speeds.
Background technology
The operation principle of existing equipment is：Engine drives equipment dynamic input shaft and wheel rotation by belt pulley, if
Coolant in standby is driven by impeller and rotates together, and the edge of apparatus casing is thrown toward under the influence of centrifugal force, while producing
Certain pressure, then flows out from water outlet or water pipe, center pressure reduction, water tank because coolant is thrown out of of impeller
In coolant be inhaled into impeller through water pipe under the differential pressure action of equipment importation and impeller central, realize the reciprocal of coolant
Circulation.Equipment major part in the market is that belt pulley is fixedly mounted with equipment leaf power input shaft, directly by engine band
Move belt pulley and then drive the rotation of equipment impeller, thus the equipment impeller of this structure to be worked from engine by power input shaft
When from be just constantly in the working condition rotated at the same speed with belt pulley, engine water temperature not yet reach optimum working temperature or
Water temperature is reduced to when below optimum working temperature, and impeller still rotates at the same speed with belt pulley, causes engine temperature to be in
Optimum working temperature is interval, accelerates the abrasion under engine cold state, reduces the service life of engine, and due to setting
Standby impeller is in high speed rotational operation state all the time, thus also exacerbates the abrasion of equipment components and aging, the work of equipment
It is less efficient.
The content of the invention
Present invention purpose is to solve current equipment to be always maintained at being rotated at the same speed with belt pulley in the course of the work
The wear and tear in machines that causes is big, short life, ineffective technical problem, and providing one kind can carry out speed governing, section to equipment
The variable-speed clutch for save the energy, reducing wear and tear in machines and improve machine operation efficiency.
In order to complete present invention purpose, the application uses following technical scheme：
Variable-speed clutch of the invention, including belt pulley, the power in the belt pulley connecting hole is socketed in by bearing
Adhesive disk that input shaft, the fixed disk being fixed on the belt pulley lateral surface are connected with the fixed disk, be fixed on it is described dynamic
Drive plate and the iron core being fixed in equipment on power input shaft, it is characterised in that：The side of the fixed disk passes through spring leaf
The adhesive disk is connected, the another side of the adhesive disk is relative with the drive plate, on the other side face of the drive plate
With cavity, the iron core is accommodate in the cavity, the coil relative with the adhesive disk is provided with the iron core, it is described solid
Price fixing is additionally provided with groove, and lifting magnet is provided with the groove, and the lifting magnet is arranged on the power input shaft, the magnet
Disk includes magnet fixed disc, and multiple permanent magnets, the fixed disk have been evenly arranged on the outer circumference surface of the magnet fixed disc
The soft magnetic bodies of the ring-type relative with the permanent magnet are inside provided with,
When the magnet fixed disc is fixed on the power input shaft by flat key, the drive plate is towards the iron
There is mounting groove on the side of core, second spring piece and the second adhesive disk are provided with the mounting groove, the second adhesive disk leads to
Cross second spring piece and be fixed on the mounting groove trench bottom, second relative with the second adhesive disk is additionally provided with the iron core
Coil；
When the magnet fixed disc is arranged on the power input shaft by bearing, the outside of the magnet fixed disc
Face is fixedly connected with the second adhesive disk by second spring piece, and relative with the second adhesive disk is additionally provided with the iron core
Two coil；
During the coil electricity, the adhesive disk compresses the drive plate under the influence of a magnetic field, during the coil blackout,
The adhesive disk departs from the drive plate in the presence of spring leaf.
Uniformly offered on the outer circumference surface of magnet fixed disc of the present invention in multiple holding tanks, the holding tank and accommodated
The permanent magnet.
Permanent magnet of the present invention is shoe magnet of the top with projection, and the ledge top of the holding tank both sides is inside
Extend the holding section for engaging the side of shoe magnet two.
Spring leaf of the present invention has an inside and outside two circles screws, and the screw of outer ring is used to being threadedly coupled the spring leaf and solid
Price fixing, the screw of inner ring is used for bolt connection adhesive disk and spring leaf.
Mounting groove of the present invention is annular groove, and the second spring piece has inside and outside two circles screw, and inner ring screw is used for
Threaded connection second spring piece and mounting groove, outer ring screw are used for bolt connection second spring piece and the second adhesive disk.
Second spring piece of the present invention has an inside and outside two circles screws, outer ring screw be used to being threadedly coupled second spring piece and
Magnet fixed disc, inner ring screw is used for bolt connection second spring piece and the second adhesive disk.
Drive plate of the present invention is fixed on the power input shaft by flat key, and the iron core has through hole, described
Power input shaft is connected through the through hole with equipment.
Multiple magnet isolation tanks are respectively equipped with adhesive disk of the present invention and the second adhesive disk.
Variable-speed clutch of the invention is distinguished and is compared with prior art：(1) permanent magnetism of variable-speed clutch of the invention
Body is assemblied on the outer circumference surface of lifting magnet, produces magnetic whirlpool to drive equipment by the soft magnetic bodies in permanent magnet and fixed disk
Rotate, different from ringshaped magnet is fixed on into lifting magnet medial surface in the prior art, by ringshaped magnet and fixed disk inner groove surface
The structure of magnetic whirlpool is produced, permanent magnet circumferentially of the invention is big with fixed disk contacting external air area, it is easy to will
The heat that magnetic whirlpool is produced is taken away, and extends clutch service life, and permanent magnet is the shoe magnet of some laminated structures, card
It is connected in holding tank, maintenance easy to disassemble, and can partly changes, additionally, the gross weight and volume of some shoe magnet is small
In the magnet of monoblock type, clutch space utilization rate is improved, also cause that clutch overall weight reduces, be easy to mobile and install；
(2) variable-speed clutch of the invention passes through lifting magnet, adhesive disk, the second adhesive disk, drive plate and iron core, it is possible to achieve two speed,
Three fast two kinds of control models, Quan and three velocity modulation speed clutch can realize a speed with the three speed controls for turning, two speed accelerate, three speed are dynamic
Pattern, it is also possible to realize three fast control models of zero-speed idle running, a fast low speed, two fast full speed, variable-speed clutch of the invention is fitted
Answer scope wide；(3) speed of the invention drives power input shaft in a speed with the variable-speed clutch for turning by the inertia of belt pulley
Rotate, can more effectively save energy, reducing energy consumption；(4) variable-speed clutch of zero-speed of the present invention idle running can be with zero-speed
Braking is realized by the second adhesive disk and iron core adhesive, so that equipment stops operating, belt pulley idle running, it is possible to reduce equipment
Abrasion, reducing energy consumption increases comfortableness.
Brief description of the drawings
Fig. 1 is the structural representation of the variable-speed clutch of first embodiment of the invention；
Fig. 2 is the structural representation of the lifting magnet of first embodiment of the invention；
Fig. 3 is the core interior structural representation of first embodiment of the invention；
Fig. 4 is the structural representation of the variable-speed clutch of second embodiment of the invention；
Fig. 5 is the core interior structural representation of second embodiment of the invention；
Fig. 6 is the structural representation of the variable-speed clutch of third embodiment of the invention；
Fig. 7 is the core interior structural representation of third embodiment of the invention.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with the accompanying drawings：
Embodiment one：
As shown in figs. 1 and 3, the variable-speed clutch of the present embodiment is used to pass to the power of belt pulley 1 power of equipment
Input shaft 2, the connecting hole of belt pulley 1 is socketed in the front end of power input shaft 2, the side of the ancillary equipment of belt pulley 1 by bearing
It is the right side of belt pulley 1, fixed disk 3 is installed on its right side, and fixed disk 3 is fixedly connected with belt pulley 1 with bolt, the right side of fixed disk 3
Side is provided with groove, and the inner containment of groove has lifting magnet 10, and lifting magnet 10 is fixed on power input shaft 2 by flat key, magnet
Disk 10 can be rotated with power input shaft 2 in groove, and the ledge of groove is fixedly connected adhesive disk 4, spring by spring leaf 41
Piece 41 has inside and outside two circles screw, and the screw of outer ring is used to be threadedly coupled spring leaf 41 and fixed disk 3, and the screw of inner ring is used for spiral shell
Tether and connect adhesive disk 4 and spring leaf 41, adhesive disk 4 can overcome the pretightning force of spring leaf along the axial direction fortune of power input shaft 2
Dynamic, the right side of adhesive disk 4 is provided with drive plate 5, has gap between drive plate 5 and adhesive disk 4, and drive plate 5 is solid by flat key
It is scheduled on power input shaft 2, the right side of drive plate 5 has cavity, and cavity has the opening of ancillary equipment, iron is accommodated in cavity
Core 6, iron core 6 is bolted on the shell of equipment, and the center hole of iron core 6 and power input shaft are gap cooperation, power
Input shaft 2 can freely be rotated in the circular hole of iron core 6, and power input shaft 2 provides power, the inside of iron core 6 and adhesive to equipment
Coil 7 is provided with the relative position of disk 4, magnetic field suction adhesive disk 4 is produced when coil 7 is powered, adhesive disk 4 is provided with some every magnetic
Groove.
As shown in Fig. 2 the lifting magnet 10 of the present embodiment is made up of magnet fixed disc 101 and shoe magnet 102, magnet is fixed
Disk 101 is fixed on power input shaft by flat key, and the circumferential edge of magnet fixed disc 101 is uniformly provided with multiple holding tanks 103,
For accommodating shoe magnet 102, shoe magnet 102 is to be provided with and the corresponding ring of shoe magnet 102 in permanent magnet, fixed disk 3
The soft magnetic bodies of shape, the outer circumference surface of magnet fixed disc 101 is gap cooperation with the groove cell wall of fixed disk 3, when lifting magnet 10 exists
Shoe magnet 102 and soft magnetic bodies can form magnetic whirlpool when being rotated in groove, it is preferred that permanent magnet is top with raised shoe
Magnet 102, the ledge top of the both sides of holding tank 103 extends internally out for engaging 102 liang of holding sections of side of shoe magnet, this
Sample is easy to disassemble and changes shoe magnet 102.
The control method that the variable-speed clutch of the present embodiment is used for two fast equipment is as follows：The motor of driving belt pulley 1 is opened,
Then the speed demand according to equipment controls variable-speed clutch, and specific work process is as follows：
(1) if equipment needs to slowly run, power off coil 7, adhesive disk 4 is separated with drive plate 5, and fixed disk
3 rotate with belt pulley 1, and the shoe magnet 102 of soft magnetic bodies and lifting magnet 10 in fixed disk 3 produces magnetic whirlpool, fixed disk 3 to lead to
Cross magnetic whirlpool drive lifting magnet 10 rotate, lifting magnet 10 by flat key drive power input shaft 2 rotate, power input shaft 2 turn
Speed is the 40%-50% of the rotating speed of belt pulley 1；
(2) if equipment needs high-speed rotation, coil 7 is powered and produce magnetic field, adhesive disk 4 is under the influence of a magnetic field gram
The pretightning force for taking spring leaf 41 is fitted with drive plate 5, and belt pulley 1 passes sequentially through fixed disk 3, spring leaf 41, adhesive disk 4 and drives biography
Moving plate 5 is rotated, drive plate 5 by flat key drive equipment power input shaft 2 rotate, equipment full-speed operation be equipment rotating speed and
The rotating speed of belt pulley 1 is identical.
Embodiment two：
As illustrated in figures 4-5, the present embodiment is with the difference of embodiment one：Also it is provided with the right side cavity of drive plate 5-1
Mounting groove 51-1, mounting groove 51-1 are annular groove, and second spring piece 91-1 and the second adhesive disk 9-1, second are provided with inside it
Spring leaf 91-1 has inside and outside two circles screw, and inner ring screw is used to be threadedly coupled second spring piece 91-1 and mounting groove 51-1, outward
Circle screw is used for bolt connection second spring piece 91-1 and the second adhesive disk 9-1, is additionally provided with iron core 6-1 and the second adhesive disk 9-
1 just to the second coil 8-1, the second coil 8-1 produces magnetic field, the second adhesive disk 9-1 can be pull-in on into iron core 6-1 when being powered
On.
The variable-speed clutch of the present embodiment is used for the control method of three fast equipment：The motor of driving belt pulley 1-1 is opened, so
The speed demand according to equipment controls variable-speed clutch afterwards, and specific work process is as follows：
(1) if equipment needs zero-speed to stall, power off coil 7-1, while the second coil 8-1 is powered, adhesive disk
4-1 is separated in the presence of spring leaf 41-1 with drive plate 5-1, and the second adhesive disk 9-1 overcomes second under the influence of a magnetic field
The pretightning force of spring leaf 91-1 is fitted with iron core 6-1, and the second adhesive disk 9-1 makes drive plate 5-1 adsorb on iron core 6-1, and iron
Core 6-1 is fixed, therefore drive plate 5-1 cannot rotate, and drive plate 5-1 prevents power input shaft 2-1 from turning by flat key
It is dynamic, realize that the zero-speed of equipment is rotated；
(2) if equipment needs to slowly run, coil 7-1 and the second coil 8-1 power-off, adhesive disk 4-1 and transmission are made
Disk 5-1 is separated, and the second adhesive disk 9-1 and iron core 6-1 is separated, and lifting magnet 10-1 is by shoe magnet and fixed disk 3-1
Soft magnetic bodies produce magnetic whirlpool with belt pulley 1-1 rotate, lifting magnet 10-1 by flat key drive equipment power input shaft 2
Rotate, equipment is in low-speed run state；
(3) if equipment needs high-speed rotation, coil 7-1 is powered and produce magnetic field, while making the second coil 8-1 break
Electricity, the second adhesive disk 9-1 departs from iron core 6-1 in the presence of second spring piece 91-1, and drive plate 5-1 is free to rotate, and inhales
Close disk 4-1 overcomes the pretightning force of spring leaf 41-1 to be fitted with drive plate 5-1 under the influence of a magnetic field, and belt pulley 1-1 is passed sequentially through
Fixed disk 3-1, spring leaf 41-1, adhesive disk 4-1 band nutating disks 5-1 are rotated, and drive plate 5-1 drives the dynamic of equipment by flat key
Power input shaft 2-1 is rotated, and equipment is in the state that runs at high speed.
Embodiment three：
As shown in fig. 6-7, the present embodiment is with the difference of embodiment one：Lifting magnet 10-2 is arranged on power by bearing
On input shaft 2-2, the right flank of lifting magnet 10-2 is provided with second spring piece 91-2 and the second adhesive disk 9-2, second spring piece
91-2 has inside and outside two circles screw, and outer ring screw is used to be threadedly coupled second spring piece 91-2 and lifting magnet 10-2, inner ring screw
For bolt connection second spring piece 91-2 and the second adhesive disk 9-2, it is just right with the second adhesive disk 9-2 to be additionally provided with iron core 6-2
The second coil 8-2.
The control method that the variable-speed clutch of the present embodiment is used for three fast equipment is as follows：Open the electricity of driving belt pulley 1-2
Machine, the then speed demand control variable-speed clutch according to equipment, specific work process is as follows：
(1) if equipment needs a speed to rotate, power off coil 7-2 and the second coil 8-2, adhesive disk 4-2 and second
Adhesive disk 9-2 is separated with drive plate 5-2, and belt pulley 1-2 drives the bearing high-speed rotation of fixed power input shaft 2-2, its axle
Hold and drive power input shaft 2-2 to rotate by rolling friction, the rotating speed of power input shaft 2-2 is the 5%- of belt pulley 1-2 rotating speeds
10%；
(2) if equipment needs two speed to rotate, power off coil 7-2, while the second coil 8-2 is powered, adhesive disk
4-2 is separated with drive plate 5-2, the second adhesive disk 9-2 overcome under the influence of a magnetic field the pretightning force of second spring piece 91-2 with
Drive plate 5-2 fits, and lifting magnet 10-2 is by the magnetic whirlpool of the soft magnetic bodies generation in shoe magnet 102 and fixed disk 3 with skin
Belt wheel 1-2 is rotated, and lifting magnet 10-2 passes sequentially through the power input shaft 2-2 that the second adhesive disk 9-2 and drive plate 5-2 drives equipment
Rotate, the rotating speed of power input shaft 2-2 brings up to the 40%-50% of belt pulley 1-2 rotating speeds；
(3) if equipment needs three speed to rotate, coil 7-2 and the second coil 8-2 is made to be powered, adhesive disk 4-2 and second
Adhesive disk 9-2 is pull-in on drive plate 5-2 band nutating disk 5-2 together and rotates, and drive plate 5-2 drives power to be input into by flat key
Axle 2-2 is rotated, and equipment is that three speed are rotated, and equipment dynamic input shaft 2-2 is rotated at the same speed with belt pulley 1-2.
Embodiment above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is entered
Row is limited, and on the premise of design spirit of the present invention is not departed from, this area ordinary skill technical staff is to technical side of the invention
Various modifications and improvement that case is made, all should fall into the protection domain of claims of the present invention determination.
Claims (8)
1. a kind of variable-speed clutch, including belt pulley (1,1-1,1-2), be socketed in by bearing the belt pulley (1,1-1,1-
2) power input shaft (2,2-1,2-2) in connecting hole, the fixed disk being fixed on the belt pulley (1,1-1,1-2) lateral surface
Adhesive disk that (3,3-1,3-2) and the fixed disk (3,3-1,3-2) are connected (4,4-1,4-2), it is fixed on the power and is input into
Drive plate (5,5-1,5-2) on axle (2,2-1,2-2) and the iron core (6,6-1,6-2) being fixed in equipment, it is characterised in that：
The side of the fixed disk (3,3-1,3-2) connects the adhesive disk (4,4-1,4-2) by spring leaf (41,41-1,41-2),
The another side of the adhesive disk (4,4-1,4-2) and the drive plate (5,5-1,5-2) are relative, the drive plate (5,5-1,
There is cavity on other side face 5-2), the iron core (6,6-1,6-2) is accommodate in the cavity, the iron core (6,6-
1st, 6-2) in be provided with the coil relative with the adhesive disk (4,4-1,4-2) (7,7-1,7-2), the fixed disk (3,3-1,3-
2) groove is additionally provided with, lifting magnet (10,10-1,10-2) is provided with the groove, the lifting magnet (10,10-1,10-2) is installed
On the power input shaft (2,2-1,2-2), the lifting magnet (10,10-1,10-2) includes magnet fixed disc (101), around
Multiple permanent magnets it have been evenly arranged on the outer circumference surface of the magnet fixed disc (101), the fixed disk sets in (3,3-1,3-2)
There are the soft magnetic bodies of the ring-type relative with the permanent magnet,
When the magnet fixed disc (101) is fixed on the power input shaft (2-1) by flat key, the drive plate (5-
1) second spring piece is provided with towards having in mounting groove (51-1), the mounting groove (51-1) on the side of the iron core (6-1)
(91-1) and the second adhesive disk (9-1), the second adhesive disk (9-1) is fixed on the installation by second spring piece (91-1)
Second coil (8-1) relative with the second adhesive disk (9-1) is additionally provided with groove (51-1) trench bottom, the iron core (6-1)；
When the magnet fixed disc (101) is arranged on the power input shaft (2-2) by bearing, the magnet fixed disc
(101) lateral surface is fixedly connected with the second adhesive disk (9-2), the iron core (6-2) also by second spring piece (91-2)
It is provided with second coil (8-2) relative with the second adhesive disk (9-2)；
When the coil (7,7-1,7-2) is powered, the adhesive disk (4,4-1,4-2) compresses the transmission under the influence of a magnetic field
Disk (5,5-1,5-2), during the coil (7,7-1,7-2) power-off, the adhesive disk (4,4-1,4-2) spring leaf (41,41-
1st, 41-2) in the presence of depart from the drive plate (5,5-1,5-2).
2. variable-speed clutch according to claim 1, it is characterised in that：The outer circumference surface of the magnet fixed disc (101)
On uniformly offer multiple holding tanks (103), the permanent magnet is accommodated in the holding tank (103).
3. variable-speed clutch according to claim 2, it is characterised in that：The permanent magnet is top with raised shoe
Magnet (102), the ledge top of holding tank (103) both sides extends internally out for engaging the shoe magnet (102) two
The holding section of side.
4. variable-speed clutch according to claim 3, it is characterised in that：In the spring leaf (41,41-1,41-2) has
Outer two circles screw, the screw of outer ring is used to being threadedly coupled the spring leaf (41,41-1,41-2) and fixed disk (3,3-1,3-2),
The screw of inner ring is used for bolt connection adhesive disk (4,4-1,4-2) and spring leaf (41,41-1,41-2).
5. the variable-speed clutch according to any one of claim 1-4, it is characterised in that：The mounting groove (51-1) is ring
Shape groove, the second spring piece (91-1) has inside and outside two circles screw, and inner ring screw is used to be threadedly coupled second spring piece (91-
1) with mounting groove (51-1), outer ring screw is used for bolt connection second spring piece (91-1) and the second adhesive disk (9-1).
6. the variable-speed clutch according to any one of claim 1-4, it is characterised in that：The second spring piece (91-2)
With inside and outside two circle screws, outer ring screw is used to be threadedly coupled second spring piece (91-2) and magnet fixed disc (101-2), inner ring
Screw is used for bolt connection second spring piece (91-2) and the second adhesive disk (9-2).
7. the variable-speed clutch according to any one of claim 1-4, it is characterised in that：The drive plate (5,5-1,5-
2) it is fixed on the power input shaft (2,2-1,2-2) by flat key, the iron core (6,6-1,6-2) has through hole, described
Power input shaft (2,2-1,2-2) is connected through the through hole with equipment.
8. variable-speed clutch according to claim 7, it is characterised in that：The adhesive disk (4,4-1,4-2) and second is inhaled
Close and be respectively equipped with multiple magnet isolation tanks on disk (9-1,9-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664720.8A CN104405490B (en) | 2014-11-19 | 2014-11-19 | A kind of variable-speed clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664720.8A CN104405490B (en) | 2014-11-19 | 2014-11-19 | A kind of variable-speed clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405490A CN104405490A (en) | 2015-03-11 |
| CN104405490B true CN104405490B (en) | 2017-06-06 |
Family
ID=52643144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410664720.8A Active CN104405490B (en) | 2014-11-19 | 2014-11-19 | A kind of variable-speed clutch |
Country Status (1)
| Country | Link |
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| CN (1) | CN104405490B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100444871B1 (en) * | 2002-09-10 | 2004-08-18 | 현대자동차주식회사 | Cooling apparatus for engine |
| CN101363358A (en) * | 2007-08-11 | 2009-02-11 | 龙口中宇机械有限公司 | Three-speed reversing electromagnetical fan clutch |
| CN101881209A (en) * | 2009-07-07 | 2010-11-10 | 龙口市汽车风扇离合器厂 | Three-speed electromagnetic fan clutch |
| CN103939495B (en) * | 2014-03-18 | 2017-06-20 | 龙口中宇机械有限公司 | A kind of electromagnetic fan clutch |
| CN103925064B (en) * | 2014-03-18 | 2016-04-20 | 龙口中宇热管理系统科技有限公司 | Electromagnetic clutch gearing |
| CN204225989U (en) * | 2014-11-19 | 2015-03-25 | 龙口中宇汽车风扇离合器有限公司 | A kind of variable-speed clutch |
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2014
- 2014-11-19 CN CN201410664720.8A patent/CN104405490B/en active Active
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|---|---|
| CN104405490A (en) | 2015-03-11 |
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