CN104747620B - Electromagnetic clutch - Google Patents
Electromagnetic clutch Download PDFInfo
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- CN104747620B CN104747620B CN201510181981.9A CN201510181981A CN104747620B CN 104747620 B CN104747620 B CN 104747620B CN 201510181981 A CN201510181981 A CN 201510181981A CN 104747620 B CN104747620 B CN 104747620B
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- armature
- component
- electromagnetic clutch
- wedge
- armature component
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Abstract
A kind of electromagnetic clutch, including：Rotating shaft with axis；Driving wheel with drum type inner surface；Armature component, can between the first location and the second location be axially moved along the direction of axis；Driven wheel assembly, is installed on the rotating shaft and can be with the axial movement of armature component between the first location and the second location around the axis rotation；Driven wheel assembly has driven pulley and circumferentially spaced arrangement and can be rotatably mounted at least two wedges of driven pulley, and wedge has swing arm and wedge surface, and swing arm can be rotatably mounted on the driven pulley around voussoir axle；Armature component has armature bracket, and armature bracket has at least two shift forks, and shift fork is provided with matching surface；With the axial movement of armature component between the first position and the second position, the matching surface of shift fork promotes the swing arm so that wedge rotary motion between bonding station and separation point position.
Description
Technical field
The present invention relates to electromagnetic clutch, particularly for the engine-cooling system of automobile or the electromagnetism of air-conditioning system from
Clutch.
Background technology
Electromagnetic clutch is that one kind carries out clutch action (that is, the transmission and interruption of realizing power) under electromagnetic force
Device, it is by controlling the on/off electricity of the magnet coil in clutch the engagement of clutch with separating.Electromagnetic clutch is wide
It is general to be used for the various fields such as machinery, electronic/electrical gas, such as engine-cooling system, air-conditioning system for automobile etc..
By taking engine-cooling system as an example, the system is to ensure one of critical system of automobile normal work.Engine is cold
But system includes water pump, and it pumps coolant, coolant is quickly flowed in engine cooling circuit, to absorb engine work
As when the heat that produces, the temperature of engine is maintained under normal or optimum working temperature.Generally, engine is in water temperature
(temperature of coolant) reaches optimum Working when being 90 degree.The belt wheel (driving wheel) of the water pump of some existing automobiles and rotating shaft
It is directly connected to, therefore, water pump is operated always after the startup of automobile one, and the coolant of driving engine interior is constantly circulated.It is this
It is very slow that circulation causes the temperature of engine during automobile starting to rise.Water temperature is set to reach about 90 degree if desired, in pure idling mode
Under, the warm-up period of engine needs about 20 minutes.
Therefore, the design that belt wheel is connected with water pump is disconnected in automobile starting prior art has proposed a kind of, this
Engine warm-up time can be reduced to about 5 minutes.Warm-up period is greatly shortened, and engine can be made full out to reach most preferably
Working condition, reduces fuel consumption, more energy-conserving and environment-protective.
Chinese patent application discloses CN102216693A and discloses such a existing design.Pass through actuator (electromagnetic wire
Circle) power on/off and back-moving spring realizes adhesive/separation of actuator means 160, and then wind spring 104 is driven radially
Shrink or expand, realize that belt wheel disconnects or engaged with water pump.Disconnecting the connection of belt wheel and water pump needs actuator (electromagnetic wire
Circle) remain "on" position about 5 minutes.
But, prolonged electrical current can make actuator (magnet coil) generate heat, and then can make actuator winding resistance
Increase, electric current declines, so that actuator electromagnetic force declines, further causes and moves with the hand device return, wind spring is lost about
Beam and be radially expanded into drive member inner surface, finally cause clutch separation to fail.
In addition, actuator means 160 are without polarity, therefore realized only by the electromagnetic force of electromagnet to actuator means
Adhesive, this for electromagnet electromagnetic force require it is higher, i.e. it is big for current requirements.Therefore, energy consumption can be increased, shorten electricity
Magnet service life.
Moreover, coil spring coil is when being expanded to clutch inner surface, due to coil internal stress control problem or
Surface is due to caused coefficient of friction change when temperature change has condensed water, it may occur that frictional force is not enough, causes clutch
Device couple drive fails.
Chinese utility model patent bulletin CN202040232U discloses another existing design.In disclosed clutch
In, permanent magnet 21 is provided with sucker 2.Sucker keeps normality engagement state with belt pulley.When magnet coil 11 is powered, produce
The magnetic field repelled with permanent magnetism iron phase, belt pulley is separated with sucker, i.e. belt pulley disconnects with water pump.In the program, for electromagnetic wire
The electromagnetic force of circle requires higher, i.e. big for current requirements, can increase energy consumption, and shorten electromagnet service life.Other electromagnetism
Coil needs to be kept for longer conduction time, and easily heating, can equally increase energy consumption.Pass through the suction of sucker and belt pulley in the program
The torque for directly transmitting belt pulley is closed, the intensity for sucker has higher requirements, sucker is easier to produce big abrasion.
Chinese utility model patent bulletin CN203769916U discloses another existing design, wherein, in the first rotation
The first magnet 501 is fixed with body 2, the first magnet is circumferentially arranged, and diametrically opposite polarity.Powered off in electromagnetic core 6
When, adhesive disk 7 is attracted to be engaged with the first rotary body 2 by permanent magnet, and the rotation of the first rotary body is transferred into the second rotation
Body 3.When electromagnetic core is powered, adhesive disk 7 is separated from the first rotary body, the first rotary body 2 is separated with the second rotary body 3.Should
In scheme, adhesive disk is also soft magnetism, and non-permanent magnet, when electromagnetic core is powered, it is necessary to offset the magnetic field of permanent magnet, rather than
Power directly is acted to adhesive disk, it is necessary to high current, high energy consumption；When needing to disconnect the connection of adhesive disk and belt pulley, electricity
Magnetic core needs to be powered for a long time, the problem of also producing heating and high energy consumption.In addition, adhesive disk is directly turned round by the transmission that rubs
Square, the intensity for adhesive disk has higher requirements.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of electromagnetic clutch with new-type clutch structure.
The invention discloses a kind of electromagnetic clutch, including：Rotating shaft with axis；Active with drum type inner surface
Wheel；Armature component, the armature component can be between the first location and the second location axially moved along the direction of the axis；
Characterized in that, the electromagnetic clutch also includes：Driven wheel assembly, the driven wheel assembly is described with being fixably attached to
The driven pulley of rotating shaft and circumferentially spaced arrangement and at least two wedge shapes that the driven pulley can be rotatably mounted to
Block, the wedge has swing arm and wedge surface, and the swing arm can be rotatably mounted on the driven pulley；Wherein：The rank
Iron component has at least two shift forks, and the shift fork is provided with the mating surface coordinated with the swing arm；Wherein：With the armature
The axial movement of component between the first position and the second position, the mating surface of the shift fork promotes the swing arm, and the promotion is made
Firmly there is the force component tangent with circumferencial direction so that the wedge rotates fortune between bonding station and separation point position
Dynamic, in the bonding station, the wedge surface engages the rotation for causing the driving wheel with the drum type inner surface of the driving wheel
Motion be transferred to the driven pulley and and then be transferred to the rotating shaft, in the separation point position, the wedge surface and the active
The drum type inner surface of wheel, which is separated, causes the rotary motion of the driving wheel to the driven pulley is transmitted to interrupt.
The beneficial effects of the invention are as follows can realize the electromagnetic clutch of Safe Failure there is provided a kind of；In addition, even in
When thering is water or oil to cause coefficient of friction degradation between the rubbing surface between voussoir and driving wheel, also due to Wedged is combined
Effect and keep clutch can transmit design need moment of torsion.
Brief description of the drawings
Fig. 1 is the decomposition diagram of the electromagnetic clutch according to the present invention；
Fig. 2 is the cross-sectional view according to electromagnetic clutch of the invention in the assembled state；
Fig. 3 is the cross section and perspective according to electromagnetic clutch of the invention in the assembled state；
Fig. 4 is the perspective view of the driving wheel of the electromagnetic clutch according to the present invention；
Fig. 5 is the cross-sectional view of the driving wheel of the electromagnetic clutch according to the present invention；
Fig. 6-7 is the perspective view of the driven pulley of the electromagnetic clutch according to the present invention；
Fig. 8 is the cross-sectional view of the driven pulley of the electromagnetic clutch according to the present invention；
Fig. 9-10 is the perspective view of the wedge of the electromagnetic clutch according to the present invention；
Figure 11 is the side view of the wedge of the electromagnetic clutch according to the present invention；
Figure 12 is the side view of the armature bracket of the electromagnetic clutch according to the present invention；
Figure 13 is the perspective view of the armature bracket of the electromagnetic clutch according to the present invention；
Figure 14 is the fragmentary, perspective view of the armature bracket of the electromagnetic clutch according to the present invention.
Embodiment
Below with reference to the accompanying drawings the electromagnetic clutch according to the present invention is introduced.Fig. 1-3 show according to the present invention electromagnetism from
Clutch.
Casing assembly, rotating assembly, electromagnet assembly, driving wheel are mainly included according to the electromagnetic clutch 100 of the present invention
Component, driven wheel assembly.
Casing assembly includes housing 1, the impeller 27 being installed on one of outside of housing 1 (left side is illustrated in Fig. 1)
And positioned at impeller bearing-seal assembly (also referred to as water seal) 14 between the two.Housing 1 includes the cylindrical wall 1a for limiting hole
And reinforcement 1b, as shown in Figure 1.
Rotating assembly includes rotating shaft 7a and the bearing 7 being installed on rotating shaft 7a.Rotating assembly is from opposite with impeller 27 one
Side is installed in the hole of housing 1 so that bearing 7 is overall to be substantially contained in the hole of housing 1 and rotating shaft 7a one end is prolonged
Reach to be engaged with impeller 27 and impeller bearing-seal assembly 14 outside housing, as shown in Figure 2.
Formula assembling retainer ring 29 is washed off to be arranged on the cylindrical wall 1a of housing 1 with by electromagnet assembly described below
(specifically, iron yoke) is assemblied on housing 1.The assembling retainer ring 29 has the junction surface engaged respectively with each reinforcement 1b,
When electromagnet assembly is arranged on housing, to be positioned in a circumferential direction relative to cylindrical wall 1a.
Electromagnet assembly includes iron yoke 24 and the magnet coil 32 being positioned in iron yoke 24.Electromagnet assembly is arranged on housing
On 1 and installed in the active for being used to receive external impetus (such as power or other external impetus from automobile engine)
Take turns in (belt wheel) 2, electromagnet assembly side is against assembling retainer ring 29, the radial direction of the neighbouring driving wheel 2 described below of opposite side
Part 2b, as shown in Figure 1, 2.Iron yoke 24 can for example be formed by soft magnetic material, and magnet coil 32 can be in iron yoke 24 after being powered
Upper generation magnetic pole.
By the socket 28 and slotting for automobile cable to be connected to for being fixed to the end of magnet coil in iron yoke 24
The connector that plug 25 on seat 28 is constituted electrically connects the cable of automobile with the magnet coil of electromagnet, to be supplied to electromagnet
Electricity or power-off.
Driving wheel 2 is the main member of electromagnetic clutch active part, preferably belt wheel.In other embodiments, actively
Wheel can also be other components, and belt wheel can be fixedly connected with the driving wheel.
Fig. 4 and Fig. 5 show the construction of driving wheel 2, and wherein Fig. 4 is the perspective view for showing driving wheel, and Fig. 5 is to show actively
The sectional view of wheel.
As shown in Figures 4 and 5, driving wheel include cylindrical wall 2a and at axial certain position from cylindrical wall 2a radially to
Interior extension, radial component 2b in form of annular rings.In the exemplary embodiment, radial component 2b it is preferred with cylindrical wall 2a
Axial middle position is integrally disposed upon in driving wheel 2.But, the invention is not restricted to this, radial component 2b can also be according to reality
Border situation is arranged on other axial positions in driving wheel 2.
When the radial component 2b of driving wheel 2 is made for soft magnetic materials, the radial component can be considered as the first rotor；When
The radial component of driving wheel be non-soft magnetic materials when, can also set one relative to driving wheel fix, by soft magnetic materials system
Into the first rotor.
As Figure 1-3, electromagnet assembly is arranged in driving wheel 2, close to (first turn of the radial component of driving wheel 2
Son).
As illustrated in figures 4-5, the first rotor 2b is provided with magnet isolation tank 2c, and the magnet isolation tank enables the specific magnetic fields of electromagnet to wear
Cross the first rotor and act on the armature component being described below.It can for example make electromagnet that radially-arranged opposite pole is presented
Property, with the permanent magnet of the radial distribution magnetic pole corresponding to armature component；Or make electromagnet that single polarity is presented in axis direction,
With the permanent magnet of the axial distributed polar corresponding to armature component.
Next the secondary part of electromagnetic clutch is described.
Secondary part mainly includes the armature component being made up of armature 19 and armature bracket 31 and by driven pulley 18 and wedge shape
The driven wheel assembly that block 20 is constituted.Secondary part is arranged on the radial component 2b of driving wheel 2 sides opposite with electromagnet assembly, borrows
Help the radial part of the cylindrical-shaped main body and driving wheel 2 of bearing 33 and the radially mounted driven pulley 18 described later of back-up ring 34
Between part.
Armature component include radially or axial distributed polar permanent magnet, such as radially inner side is N poles, and radial outside is
S poles, vice versa；Or axial side is N poles, opposite side is S poles.Preferred scheme is radial distribution, can so make electromagnetism
Electromagnetic force required for iron component is minimum, i.e., electric current is minimum, and energy consumption is minimum.In the present embodiment, the armature to annular is passed through
19 are magnetized, and armature 19 is turned into permanent magnet.In an alternative embodiment, magnet structure can be provided on armature 19
Multiple circular or annular component.Armature is installed together by screw 23 with armature bracket 31.
The driven wheel assembly being made up of driven pulley 18 and wedge 20 is axially mounted between armature 19 and armature bracket 31.
Driven pulley 18 as shown in figs 6-8, has：Axially extending cylindrical-shaped main body, and for fixing (can be interference fit, can also
Other mounting means) in rotating shaft 7 (referring to Fig. 2)；And between multiple grades that the end away from driving wheel is radially extended
Every radial arm 18a of the distribution (on circumferencial direction).The radial arm is provided with mounting hole, for armature bracket 31, wedge 20 to be led to
Voussoir axle 22 is crossed to be installed on radial arm.In the example shown, three radial arms are provided with.But the invention is not restricted to this, can
To be arranged as required to multiple radial arms that quantity is different from three.
Alternatively, driven pulley 18 could be arranged to double-decker in the axial direction, and its left side (close to driving wheel side) is set
There is the cirque structure that soft magnetic materials is made, it can be used as the second rotor 181；Its right side (away from driving wheel side) is provided with
Multiple radial arm 18a as described above.Radial arm 18a can be the cylindrical-shaped main body Integral design with driven pulley 18, can also
It is that the part separated is fixed together by welding or other modes with cylindrical-shaped main body.Alternatively, multiple radial arm 18a
It can also be the single loop configuration radially extended from cylindrical-shaped main body.
In the case where being provided with the second rotor 181, wedge 20 is housed in the double-deck of driven pulley by voussoir axle 22 and tied
Between structure, i.e., between the second rotor 181 and multiple radial arm 18a.Also, 31 points of armature 19 and armature bracket in armature component
The axial both sides of the second rotor 181, wherein left side of the armature 19 in Fig. 1, the right side of the armature bracket 31 in Fig. 1 are not arranged on
Side.
As shown in figs. 9-11, wedge 20 include swing arm 20a and wedge surface 20b, swing arm 20a by voussoir axle 22 be arranged on from
On the radial arm 18a of driving wheel 18.Wedge 20 can rotate around voussoir axle 22.In the present embodiment, voussoir axle 22 and driven pulley 18
Radial arm 18a matching relationship and voussoir axle 22 can be respectively with the matching relationship of wedge 20：A is interference fitted and gap
Coordinate；Or b gaps coordinate and gap coordinates；Or c gaps coordinate and are interference fitted.
The radial arm 18a of driven pulley 18 coordinates with the left end counterbore punching press of voussoir axle 22, forms voussoir axle to radial arm 18a's
The stop surface of left end.The diameter of axle that voussoir axle 22 is engaged with armature bracket 31 is more than the radial arm 18a of voussoir axle 22 and driven pulley 18
The diameter of axle of cooperation, so as to be formed to the stop surface on the right side of driven pulley.Whereby, voussoir axle is limited on the driven wheel axially.Rank
Brandreth 31 also by voussoir axle 22 be arranged on driven pulley 18 (radial arm) on, by the guiding constraint of voussoir axle 22 (voussoir axle 22 with
Armature bracket 31 is that gap coordinates), and can axial reciprocating movement.When armature component is moved to left side (first position), armature bracket
31 are connected to the right side of the radial arm of driven pulley, and when armature component is moved to right side (second place), armature is connected to driven
The end face in the left side of wheel, i.e. driven pulley can in the axial direction to armature component mobile carry out limit stops.
As shown in figs. 12-14, armature bracket 31 has the annular body 31a and multiple U being arranged on annular body periphery
Shape shift fork 31b.Shift fork include the first driving lever 31b1 and the second driving lever 31b2, the first driving lever, the second driving lever lateral surface relative to turn
Axle axis can be cylindrical surface or plane；Mating surface 311,312 phases on first, second driving lever with wedge
It is helicoid or tapered plane for shaft axis, the tapered plane intersects and out of plumb with the axis of rotating shaft.In preferred scheme, match somebody with somebody
Conjunction face is helicoid.
When armature component, which is driven, in axial direction to be moved, mating surface promotes the wedge 20 on voussoir axle 22,
There is the force component tangent with circumferencial direction in this motive force so that wedge rotates around voussoir axle, i.e. by the axle of armature component
The rotary motion of wedge circumferencial direction is converted into motion, so that the inner cylindrical of the wedge surface of wedge 20 and driving wheel 2
Mantle friction is engaged or separated.
Alternatively, profile is provided with voussoir 20 in cylinder or the ferrule 20c of arc, ferrule 20c one or dress
With being arranged on voussoir 20, it is engaged to the mating surface 311,312 with armature bracket 31, reduces friction, make cooperation more smooth.
Fig. 2-3 shows the assembled state of electromagnetic clutch, and cap component 3 coordinates with driving wheel to be installed, so that in electromagnetism
The side of clutch forms sealing cover.Mutual assembling between each part can be carried out using any means known, no longer be retouched in detail here
State.
The operation of electromagnetic clutch according to the present invention is described below with reference to Fig. 1.
When describing electromagnet assembly on/off electricity first, the axial movement of armature component.
When the polarity for leading to first direction electric current, the polarity of electromagnet assembly and the permanent magnet of armature component to electromagnet assembly
Conversely/attracting, act on armature component.Therefore, under electromagnetic force, armature 19 and 31 grams of armature bracket being installed together
The active force of elastic component is taken to the separation point position movement of first position, preferably clutch.
When armature component is moved to left side (first position), the permanent magnet in armature component can be made with soft magnetic materials
The first rotor 2b is attracted.The adhesive is the magnetic attraction for having gap, in other embodiments, corresponding to other clutches
Structure, the adhesive can also be the magnetic attraction with Mechanical Contact.Armature component is due to itself permanent magnet and the first rotor
Soft magnetic materials is attracting, therefore, that is, turns off the electric current of electromagnet, only pass through the permanent magnet and the soft magnetism of the first rotor of armature component
Armature component can also be maintained at first position by the magnetic attracting power effect of material, or can be by logical to electromagnet assembly
Armature component can be just maintained at first position by the electric current of reduction.
When the electric current to the logical second direction opposite with first direction of electromagnet assembly, the magnetic that electromagnet assembly is formed
Polarity it is identical with the permanent magnet polarity of armature component/repel each other, electromagnet assembly repels/promoted armature component sidesway to the right
It is dynamic.Under electromagnetic force and the collective effect of elastic component, making armature component, (second place, bonding station) is mobile to the right.Now,
The gap increase of armature component and the first rotor, the magnetic attracting power between armature component and the first rotor can be ignored, armature
Component can only be maintained at right side in the presence of elastic component.The power supply to electromagnet can now be stopped, to reduce energy consumption.
When being provided with the second rotor on the driven wheel, second rotor can be made up of soft magnetic materials.Work as armature component
When being moved to right side, with the second rotor adhesive, the adhesive can be the magnetic attracting for having Mechanical Contact, or have the magnetic in gap
Property adhesive.Armature component and bitrochanteric the suction-combining force and elastic component the active force collective effect of armature component is more ensured by
Armature component is maintained at right positions (second place).
By integrating a control unit on socket 28, such as one counting commutator can also pass through vehicle-mounted relay
Device directly controls the sense of current in magnet coil 32 to control the magnetic pole of electromagnet.
As described above, in the invention, electromagnet assembly is straight by the pole polarity identical or opposite with permanent magnet
Connect to apply the armature component containing permanent magnet and repel each other or attracting magnetic action power, it is not necessary to overcome permanent magnetism as existing patent
Body is to the active force of armature component or the magnetic field of counteracting permanent magnet.Therefore, in the invention, the effect of electromagnet assembly
Power can significantly reduce, and the electromagnetic clutch with U.S. Patent Publication, electromagnetism of the invention are disclosed relative to aforementioned Japanese patent
The size of electric current in iron component can be reduced to about half of electric current in the prior art.Meanwhile, it is moved to a left side in armature component
Behind side or right side, armature component can may remain in accordingly without electromagnet active force (or only needing very little active force)
Position, you can to stop the power supply (or only needing very little electric current) to electromagnet, energy consumption can be greatly decreased, i.e. heavy current pulse
Action time it is very short, can calculate in seconds.Relative to several minutes of action times of foregoing electromagnet of the prior art, at this
The action time of electromagnet assembly shortens two orders of magnitude in invention, greatly reduces the possibility of electromagnet heating.
Next description is when electromagnet assembly on/off is electric, with the axial movement of armature component, the fortune of driven wheel assembly
It is dynamic.
When the electric current to the logical second direction opposite with first direction of electromagnet assembly causes armature component to the right (the
Two positions, bonding station) it is mobile when, armature component (armature 19 and armature bracket 31) drives the armature 19 and rank positioned at armature component
Driven wheel assembly between brandreth 31 is moved to the second place vertically.When armature bracket 31 is moved to the second place vertically,
Second driving lever 31b2 of the U-shaped shift fork of armature bracket 31 mating surface 311 applies and circumferencial direction to the ferrule 20c of wedge 20
Tangent active force so that wedge 20 rotates around voussoir axle 22, the axis of voussoir axle is parallel with shaft axis.Now, with
Voussoir axle 22 is that rotation axis makes the side that the wedge surface of wedge 20 and the cylindrical wall 2a of driving wheel 2 inner surface rubbing surface are engaged
To rotation.After the cylindrical wall 2a of wedge surface and the driving wheel 2 of wedge 20 inner surface CONTACT WITH FRICTION, wedge 20 can be by
With the friction of the cylindrical wall 2a from driving wheel 2 of the motive force equidirectional of the mating surface 311 of armature bracket 31 inner surface
Active force, makes wedge 20 and the cylindrical wall 2a of clutch driving wheel 2 inner surface keep Wedged engage, and will both it
Between frictional force driven pulley 18 is promoted so as to which transmitting rotary power is to rotating shaft by voussoir axle 22.The Wedged, which is combined, refers to wedge
The abutment of the inner surface of the wedge surface of shape block and the cylindrical wall of driving wheel and the line and wedge of wedge rotation axis
The line of rotation axis and shaft axis is in an angle, and it is not that self-locking is combined that the Wedged, which is combined,.
Second driving lever 31b2 (driving lever for making wedge be engaged with driving wheel) is designed as elastic component, so that mating surface
311 preferably coordinate with wedge 20.Second driving lever 31b2 elastic deformation can make multiple (being three in illustrated example)
The pressure of wedge and belt wheel is basically identical.Assuming that because the reason for manufacturing tolerance/location tolerance, the engagement of wedge and belt wheel
Have after first having, then can make being combined with belt wheel inner surface for three wedge basic synchronizations by the elastic deformation of the second driving lever.
When armature bracket 31 is mobile by driving to first position direction with armature component, the first driving lever 31b1 of armature bracket 31
Mating surface 312 promote wedge 20 to be rotation axis to the wedge surface for making wedge 20 and the cylinder of driving wheel 2 with voussoir axle 22
The direction of shape wall 2a inner surface separation is rotated, so that wedge surface is separated with the cylindrical wall 2a of driving wheel 2 inner surface, is realized
The separation function of the rotary power of driving wheel and driven pulley so that driving wheel dallies relative to driven pulley.
Instead of, in other embodiments, the armature bracket can also be arranged on the left side of driven pulley together with armature,
By the inclination/direction of rotation for the mating surface for being arranged in correspondence with shift fork, it can equally realize armature component in axial first position
And during the movement of the second place, make the engagement of wedge and the inner surface of the cylindrical wall of driving wheel or separate.
As the elastic component 30 of second place keeper of secondary part, the direction away from the first rotor is applied in the axial direction
Plus active force is on armature component so that after the electric current of electromagnet assembly is disconnected, elastic component 30 can drive secondary part
The second place is returned to, in the second place, the adhesive of armature component (specifically, armature 19) and electromagnetic assembly is disconnected.Elastic component
Can be helical spring, can also plate-like spring, or wavy spring.Quantity can also also may be used according to needing to be set to one
To be multiple superpositions or scattering device.The mode of action can be stretching armature component or bias armature component.This reality
Apply in example, elastic component is a helical spring or multiple axially stacking wavy springs, its one end is biased in the end of rotating shaft
Or the bitrochanteric end face described below, the other end is biased on the armature bracket of armature component.In other embodiments, it is elastic
Part can also be the helical spring of multiple scattering devices, and its one end is abutted on the driven wheel, and the other end is connected on armature component.
Plate-like spring widely used in the art can certainly be used, concrete mode is repeated no more.
For secondary part, the other structures of prior art can be used, instead of above-mentioned shift fork-wedge shape agllutination of the invention
Structure.Such as Chinese patent application discloses the convolute coil and such as Japanese Patent Publication TOHKEMY described in CN200980145448.X
Ball-type structure described in 2007-205513.
When electromagnet fails, water pump may be stopped, and engine temperature rises.Armature component comprising permanent magnet exists
During by rising to curie point under the influence of water pump conduction heat, i.e. the armature component local environment temperature reaches design loss of excitation temperature
When spending, permanent magnet magnetism reduction or disappear, and then cause the soft of the permanent magnet of the armature component and the first rotor
The magnetic field that the electromagnet of adelphotaxy power between magnetic material or the first electric current with being applied with reducing is produced
Attraction force reduction between the permanent magnet of the armature component disappears, and then the elastic component is to the armature component
The active force of application makes the armature component be moved to the second place；When the armature component of permanent magnet returns to design temperature,
Its magnetic can be recovered, or magnetic order recovers, and permanent magnet is magnetized by electromagnet assembly, i.e., permanent magnet is impermanency
The material of loss of excitation, recovers to design load in the magnetic or magnetic force of the permanent magnet of armature component, and electromagnetic clutch still can be with
Normal work.
Under the circumstances, it is preferable that as in exemplary embodiment of the present, by armature component and secondary part
It is configured to when armature component is located at the second place (adhesive of armature component is disconnected), the wedge and driving wheel of secondary part
Inner surface wedging.Therefore, when armature component and the suction-combining force or armature component and the suction-combining force of the first rotor of the first rotor
When being less than elastic component to the active force sum of armature component to the active force of armature component with electromagnet, armature component is to the right
(second place) is mobile, makes wedge 20 along the direction for making its wedge surface be engaged with the cylindrical wall 2a of driving wheel 2 inner surface
Rotate, make wedge and the cylindrical wall 2a of driving wheel inner surface keep Wedged to engage, and by frictional force therebetween
Driven pulley 18 is promoted so as to which rotary power is transferred into rotating shaft by voussoir axle 22, with driven pump working, and then realized
The Safe Failure of electromagnetic clutch.
In the present invention, the less elastic component 30 of elastic force can be used, will can so be held in the mouth to the less electric current of electromagnetism Tie Tong
Iron component attracts to be moved to the left, and electromagnet is not easy heating.
In addition, in the present invention, due to making wedge by axial rotary of voussoir axle along making its wedge surface and clutch master
The direction of the cylindrical wall 2a of driving wheel inner surface contact is rotated, when the circle of the wedge surface (rubbing surface) and clutch driving wheel of voussoir
After cylindrical wall 2a inner surface contact, voussoir can be by mating surface (being preferably helicoid) motive force equidirectional with armature bracket
, the friction force of the inner surface of cylindrical wall 2a from driving wheel, make the inner surface of voussoir and clutch driving wheel
Keep Wedged engagement；Also, the moment of torsion of clutch transmission is bigger, must be tighter with regard to wedge between voussoir and driving wheel, the torsion of transmission
Square is bigger.Both recurring structures are destroyed as long as the moment of torsion transmitted is not more than, transmission failure would not occur in clutch
Situation.By means of such design feature, even in thering is water or oil to cause to rub between the rubbing surface between voussoir and driving wheel
Wipe coefficient degradation when, also due to Wedged combine effect and keep clutch can transmit design need moment of torsion.
By electromagnet electromagnetic force the armature comprising permanent magnet under electromagnetic force with the rank that is installed together
When brandreth is located at bonding station (first position) or separation point position (second place), after electromagnetic force disappearance, due to itself forever
Magnet and periphery ferromagnetic component (soft magnetic materials) are attracting and present position can be kept constant, so as to realize that position keeps work(
Can, can shorten dramatically the working time of electromagnet.As long as armature can be pushed or pull on bonding station or separation point position,
It can just cut off the electricity supply, so that the magnet coil winding conduction time of clutch is extremely short, will not produce makes electricity because of heating
The rough sledding of magnet function reduction.
Although describing the present invention by reference to example embodiment, it is understood that the invention is not limited in described
Example embodiment.The scope of following claim is by according to broadest explanation, to include all these versions
And equivalent 26S Proteasome Structure and Function.
Claims (13)
1. a kind of electromagnetic clutch, including：
Rotating shaft with axis；
Driving wheel with drum type inner surface；
Armature component, the armature component can axially be transported between the first location and the second location along the direction of the axis
It is dynamic；
Characterized in that, the electromagnetic clutch also includes：
Driven wheel assembly, the driven wheel assembly, which has, is fixably attached to the driven pulley of the rotating shaft and circumferentially spaced
Arrange and at least two wedges of the driven pulley can be rotatably mounted to, the wedge has swing arm and wedge surface,
The swing arm can be rotatably mounted on the driven pulley；Wherein：
The armature component has at least two shift forks, and the shift fork is provided with the mating surface coordinated with the swing arm；
Wherein：With the axial movement of the armature component between the first position and the second position, the mating surface of the shift fork
The swing arm is promoted, the impetus power has the force component tangent with circumferencial direction so that the wedge is in bonding station
The rotary motion between separation point position, in the bonding station, the wedge surface is engaged with the drum type inner surface of the driving wheel
So that the rotary motion of the driving wheel be transferred to the driven pulley and and then be transferred to the rotating shaft, in the separation position
Put, the wedge surface is separated with the drum type inner surface of the driving wheel causes the driving wheel to the rotary motion of the driven pulley
Transmission is interrupted.
2. electromagnetic clutch as claimed in claim 1, wherein：The armature component includes armature and armature bracket, the armature
The armature bracket is installed on, direction of the driven wheel assembly along the axis is located between the armature and armature bracket.
3. electromagnetic clutch as claimed in claim 2, wherein：The shift fork is circumferentially disposed on the armature bracket,
Each shift fork has the first driving lever and the second driving lever for forming generally U-shaped construction, and each driving lever is each formed with the mating surface；When
The armature component to first position move when, first driving lever promotes the swing arm so that the wedge is towards described
Disconnected position；When the armature component is moved to the second place, second driving lever promotes the swing arm so that described
Wedge is moved towards the bonding station.
4. electromagnetic clutch as claimed in claim 3, wherein：The swing arm be located at first driving lever and the second driving lever it
Between.
5. electromagnetic clutch as claimed in claim 3, wherein：Second driving lever is that elastic can stir the swing arm of wedge
Elastic component.
6. the electromagnetic clutch as any one of claim 1-5, wherein：The electromagnetic clutch also include electromagnet and
Elastic component, the armature component include permanent magnet, the electromagnet be powered when by electromagnetic force drive the armature component to
First position is axially moved, and the elastic component edge makes the direction that the armature component is axially moved to the second place to armature component
Apply active force.
7. electromagnetic clutch as claimed in claim 6, wherein：The driving wheel has first turn formed by soft magnetic materials
Son, when the armature component moves to first position, the first rotor is individually or with being passed to the electricity for reducing electric current
Armature component is ordinatedly maintained at first position by the electromagnetic force of magnet.
8. electromagnetic clutch as claimed in claim 7, wherein：The driven wheel assembly also includes the second rotor, described second
Rotor forms double-decker together with the driven pulley, and swing arm is housed in double-decker.
9. the electromagnetic clutch as any one of claim 1-5, wherein：The swing arm has cylindrical or arc
Hoop, the mating surface coordinates with the hoop.
10. electromagnetic clutch as claimed in claim 8, wherein：Second rotor is formed by soft magnetic materials, when the armature
During component movement to the second place, the armature component is maintained at second by second rotor together with the elastic component
Put.
11. the electromagnetic clutch as any one of claim 1-5, wherein：The driven wheel assembly also includes voussoir axle,
The axis of voussoir axle is parallel with shaft axis, and the wedge can be rotated around the voussoir axle.
12. the electromagnetic clutch as any one of claim 1-5, wherein：When armature component is moved in the axial direction, from
The end face of driving wheel in the axial direction carries out backstop to armature component.
13. the electromagnetic clutch as any one of claim 1-5, wherein：The mating surface is relative to the axis
Helicoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510181981.9A CN104747620B (en) | 2015-04-17 | 2015-04-17 | Electromagnetic clutch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510181981.9A CN104747620B (en) | 2015-04-17 | 2015-04-17 | Electromagnetic clutch |
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| Publication Number | Publication Date |
|---|---|
| CN104747620A CN104747620A (en) | 2015-07-01 |
| CN104747620B true CN104747620B (en) | 2017-08-18 |
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| CN201510181981.9A Expired - Fee Related CN104747620B (en) | 2015-04-17 | 2015-04-17 | Electromagnetic clutch |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747621A (en) * | 2015-04-17 | 2015-07-01 | 盖茨胜地汽车水泵产品(烟台)有限责任公司 | Electromagnetic clutch |
| CN109049150B (en) * | 2018-08-29 | 2021-11-16 | 南京瑞贻电子科技有限公司 | Wood sawing device |
| CN112653294B (en) * | 2021-01-11 | 2021-11-09 | 兰州理工大学 | Electromechanical servo comprehensive control and energy management device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204921764U (en) * | 2015-04-17 | 2015-12-30 | 盖茨胜地汽车水泵产品(烟台)有限责任公司 | Electromalgnetic clutch |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1166336A (en) * | 1966-10-28 | 1969-10-08 | Obrabiarek Rafamet Fab | An Improved Electromagnetically Operated Non-Slipping Clutch. |
| JPS58146723A (en) * | 1982-02-24 | 1983-09-01 | Shinko Electric Co Ltd | Self clamping electromagnetic clutch or brake of high transmission capacity |
| CN202040232U (en) * | 2011-03-16 | 2011-11-16 | 王佳华 | Automobile water pump electromagnetic chuck clutch |
| DE102013222408B4 (en) * | 2012-11-06 | 2021-10-21 | Ford Global Technologies, Llc | ELECTROMAGNETIC ONE-WAY CLUTCH |
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2015
- 2015-04-17 CN CN201510181981.9A patent/CN104747620B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204921764U (en) * | 2015-04-17 | 2015-12-30 | 盖茨胜地汽车水泵产品(烟台)有限责任公司 | Electromalgnetic clutch |
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