CN108462267B - A kind of external rotor electric machine of power loss braking - Google Patents
A kind of external rotor electric machine of power loss braking Download PDFInfo
- Publication number
- CN108462267B CN108462267B CN201810120201.3A CN201810120201A CN108462267B CN 108462267 B CN108462267 B CN 108462267B CN 201810120201 A CN201810120201 A CN 201810120201A CN 108462267 B CN108462267 B CN 108462267B
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- Prior art keywords
- power loss
- mandrel
- disk
- frictional disk
- magnetic brake
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-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
- H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
- H02K7/1021—Magnetically influenced friction brakes
- H02K7/1023—Magnetically influenced friction brakes using electromagnets
- H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of external rotor electric machines of power loss braking, including mandrel, stator, magnet steel and the first outer rotor with cavity, stator is fixed on mandrel, mandrel is equipped with the first bearing positioned at stator side, after first outer rotor is mounted in first bearing, first outer rotor is looped around around stator, and magnet steel is mounted on the inner peripheral wall of the first outer rotor, further includes: is arranged on mandrel and is located at the second bearing of the stator other side；Frictional disk, the frictional disk are fixedly connected after being mounted in second bearing with the first rotor；Powerless magnetic brake on mandrel is set, the powerless magnetic brake is in power loss in conjunction with the frictional disk, it is braked under the friction force that frictional disk generates between powerless magnetic brake and the frictional disk, powerless magnetic brake is separated when obtaining electric with frictional disk.External rotor electric machine of the invention in power loss with high security the advantages of.
Description
Technical field
The present invention relates to motor field, in particular to a kind of external rotor electric machine of power loss braking.
Background technique
With becoming increasingly popular for the electric vehicles such as electric vehicle, the hub motor for being driven by a motor hub rotation is extensive
Application band electric vehicle and other rotational structures, but the function of some hub motors be only limitted to drive hub rotation, inside
Without containing electromagnetic brake, do not have electromagnetic brake function.
Patent announcement number is that the patent of CN202121438U discloses a kind of hub motor, it is fixed by rotor, motor
Son, motor shaft, electric motor end cap four are most of to be constituted, and motor down-lead is arranged on motor stator；Electromagnetic braking is set in hub motor
Device, electromagnetic brake are made of electromagnetic brake movable plate and electromagnetic brake stator；Electromagnetic brake movable plate is with electric motor end cap
Electromagnetic brake lead is arranged on electromagnetic brake for integrally connected；Motor down-lead goes out, electromagnetic system from one end punching of motor shaft
Dynamic device lead goes out from the other end punching of motor shaft, and the outside of hub motor directly wraps up tire and constitutes driving wheel entirety.
In above-mentioned hub motor, electromagnetic brake stator is fixed on motor shaft, when being powered to electromagnetic brake, electromagnetism
Brake movable plate and electromagnetic brake stator are attracted, and are rubbed so that electromagnetic brake movable plate and electromagnetic brake stator be made to be formed,
And electromagnetic brake movable plate is fixed together with electric motor end cap, therefore, electric motor end cap is slowed down, and then is made solid with electric motor end cap
Fixed rotor is braked.
For above-mentioned hub motor, electromagnetic brake is switched under state and brakes, therefore, this electromagnetic braking
Device, which is called, is made electric electromagnetic brake, and therefore, under power failure state, electromagnetic brake movable plate and electromagnetic brake stator are to be in
Isolated state, so that electromagnetic brake does not have braking action.However, it has been found that for the occasion having, such as electricity
Motor on wheelchair, occupant are located on wheelchair and operate wheelchair when driving, and the motor of driving wheelchair traveling is necessarily in
Energized state, if using electric electromagnetic brake, although can be braked to wheelchair, in some cases, example
Such as, the electric quantity consumption of battery finishes or during wheelchair is run at high speed because failure powers off suddenly, and at this moment, wheelchair is in inertia
It will continue to travel under effect, carriage for the handicapped people on wheelchair, can not brake wheelchair, therefore right
There is great security risks for the handicapped people on wheelchair for carriage.In addition, in some occasions for needing parking,
The state for being necessarily in power loss due to obtaining electric electromagnetic brake, also just loses the effect of brake, therefore, obtains electric electromagnetic braking
Device is unable to ensure the safety of parking.
Summary of the invention
The external rotor electric machine that the power loss that the purpose of the present invention is to provide a kind of for improving safety is braked.
The technical solution for solving above-mentioned technical problem is as follows:
A kind of external rotor electric machine of power loss braking, including mandrel, stator, magnet steel and the first outer rotor with cavity,
Stator is fixed on mandrel, and mandrel is equipped with the first bearing positioned at stator side, and the first outer rotor is mounted in first bearing
Afterwards, the first outer rotor is looped around around stator, and magnet steel is mounted on the inner peripheral wall of the first outer rotor, further includes:
It is arranged on mandrel and is located at the second bearing of the stator other side；
Frictional disk, the frictional disk are fixedly connected after being mounted in second bearing with the first rotor；
Powerless magnetic brake on mandrel is set, the powerless magnetic brake in power loss with the frictional disk knot
It closes, is braked under the friction force that frictional disk generates between powerless magnetic brake and the frictional disk, power loss electromagnetic system
Dynamic device is separated when obtaining electric with frictional disk.
Using above scheme, when powerless magnetic brake is powered, the magnetic field generated by magnetizing coil is to friction plate
It generates and is attracted active force, which overcomes the active force of the second elastomeric element, separate friction plate with frictional disk, at this time
If the coil on stator obtains electricity, the first outer rotor can be driven to rotate.When powerless magnetic brake power-off, magnetizing coil is lost
The effect for going to generation magnetic field makes friction plate and rubs to friction plate there is no active force, the tension of the second elastomeric element release is attracted
It wipes disk to combine or support, frictional disk is braked to generate friction force between frictional disk and friction plate, and then makes
Breaking force is obtained with the first fixed outer rotor of frictional disk, is applicable in the braking to equipment (such as wheelchair) in this case
Or parking.It can thus be seen that the present invention for it is some need formulate or parking occasions, due to power loss magnetic brake
It not only can play the role of brake to equipment under artificially control power failure state, and equipment (such as wheelchair) is being run
In the case of, unexpected power loss also can be braked automatically external rotor electric machine suddenly, therefore external rotor electric machine of the invention facilitates
Improve safety of the equipment in power loss.
Detailed description of the invention
Fig. 1 is the outline structural diagram for the external rotor electric machine that power loss of the invention is braked；
Fig. 2 is the schematic diagram of the section structure of Fig. 1；
Fig. 3 is the structural schematic diagram of the frictional disk in the present invention；
Fig. 4 is the schematic perspective view of magnetic yoke in the present invention；
Schematic perspective view of the Fig. 5 for magnetic yoke in the present invention in another direction；
Fig. 6 is a kind of schematic diagram of preferred embodiment of the manual releasing mechanism in the present invention；
Fig. 7 is the structural schematic diagram of the release disk in Fig. 6；
Fig. 8 is the structural schematic diagram of the pivoted housing in Fig. 6；
1 it is mandrel, 2 is stator, 3 is magnet steel, 4 is the first outer rotor, 5 is first bearing, and 6 be second bearing, and 7 be friction
Disk, 7a are resigning groove, and 8 be limit sleeve, and 9 be magnetic yoke, and 9a is first through hole, and 9b is mounting hole, and 9c is ring set, and 9d is assembly cavity
Body, 10 be friction plate, and 11 be connecting component, and 12 be axial limiting component, and 13 be receiving cavity, and 14 be nut, and 15 be the first bullet
Property component, 16 for release disk, 16a is through-hole, 16b be the first groove, 16c be the second through-hole, 17 be pivoted housing, 17a be support block,
18 be handle, and 19 be switch, and 20 be tabletting.
Specific embodiment
As shown in Figures 1 to 5, the external rotor electric machine of a kind of power loss of the invention braking, including mandrel 1, stator 2, magnet steel 3
And the first outer rotor 4 with cavity, stator 2 are fixed on mandrel 1, stator 2 is equipped with winding, and mandrel 1, which is equipped with, to be located at
The first bearing 5 of 2 side of stator, after the first outer rotor 4 is mounted in first bearing 5, the first outer rotor 4 is looped around stator 2
Around, magnet steel 3 is mounted on the inner periphery wall surface of the first outer rotor 4, further includes: is arranged on mandrel 1 and another positioned at stator 2
Second bearing 6, frictional disk 7 and the powerless magnetic brake being arranged on mandrel 1 of side,
As shown in Fig. 2, the axle body of mandrel 1 is equipped with first shaft shoulder and second shaft shoulder, one end of first bearing 5 passes through first
One end of shaft shoulder axial limiting, second bearing 6 passes through the second shaft shoulder axial limiting.Frictional disk 7 be mounted in second bearing 6 after with
The first rotor 4 is fixedly connected, and frictional disk 7 is fixedly connected by screw with the first rotor 4, is powered when to the winding on stator 2,
Rotating excitation field is generated between stator and magnet steel 3, when rotating the first outer rotor 4, the first outer rotor 4 drives frictional disk 7 to rotate.
Powerless magnetic brake is combined in power loss with the frictional disk 7, frictional disk 7 powerless magnetic brake and the frictional disk 7 it
Between braked under the friction force that generates, and then make to obtain breaking force with the first fixed outer rotor 4 of frictional disk 7,
To stop operating with the first outer rotor 4.Powerless magnetic brake is separated when obtaining electric with frictional disk 7.
The structure of preferred powerless magnetic brake is described in detail below: in one or more embodiments, being lost
Electric electromagnetic brake includes: the magnetic yoke 9 being fixed on mandrel, the friction plate being combined in power loss with frictional disk 10, connect
Component 11, axial limiting component 12, the second elastomeric element, the relationship of each component is as follows in powerless magnetic brake:
As shown in Fig. 2, magnetic yoke 9 is equipped with centre bore, 9 sets of magnetic yoke are circumferentially fastened as a whole on mandrel 1 and with mandrel 1,
Preferably, magnetic yoke 9 is carried out with mandrel 1 by key circumferentially fixed.The axial direction of magnetic yoke 9 is restricted, it is preferable that in magnetic yoke 9 and
Between two bearings 6, it is equipped with limit sleeve 8,8 empty set of limit sleeve on mandrel 1, supported by one end and the second bearing 6 of limit sleeve 8
Top, the other end of limit sleeve 8 are supported with magnetic yoke 9 towards one end of friction plate 10, and nut 14, magnetic are fixed on mandrel 1
The other end of yoke 9 is supported with nut 14, so that magnetic yoke 9 and second bearing 6 obtain axial limiting.
As shown in Fig. 2, Fig. 4 and Fig. 5, magnetic yoke 9 is equipped with magnetizing coil (not shown), and magnetic yoke 9 is towards friction plate 10
Axial end face on form receiving cavity 13, the magnetizing coil is mounted in the receiving cavity.Magnetic yoke 9 is equipped with first through hole
9a, first through hole 9a are passed through for connecting component 11.Mounting hole 9b is additionally provided in magnetic yoke 9, mounting hole 9b is for installing second
Elastomeric element.
As shown in Fig. 2, 10 empty set of friction plate is on mandrel 1, one end of connecting component 11 is connect with friction plate, connecting component
11 other end passes through the first through hole 9a being arranged in magnetic yoke 9, connecting component 11 and first through hole 9a clearance fit, in this way, even
Relay part 11 can be along the axial movement of first through hole 9a, in order to enable 10 axis of friction plate connecting with connecting component 11
To movement.The frictional disk 7 is equipped with resigning groove 7a, the connecting component 11 and friction towards the axial end face of friction plate 10
The end that piece 10 connects is located in resigning groove 7a, that is, the end of connecting component 11 is across friction plate 10, it is preferable that
One end that connecting component 11 is connect with friction plate 10 is equipped with screw thread, and friction plate 10 is equipped with screw hole, connecting component 11 and friction
Piece 10 is fixedly connected by screw thread.
As shown in Fig. 2, the other end of the axial limiting component 12 with connecting component 11 across the first through hole 9a is fixed, axis
Can be to limiting component 12 with connecting component 11 it is integrally formed, with the radial protrusion formed in the other end of connecting component 11
Portion.Axial limiting component 12 is also possible to a stop nut, which is threadedly coupled with connecting component 11, in this feelings
Under condition, connecting component 11 is a double threaded screw.
As shown in Fig. 2, one end of the second elastomeric element is mounted in magnetic yoke 9, the other end of the second elastomeric element and friction
Piece 10 is supported.Second elastic portion 13 is located in the mounting hole 9b in magnetic yoke 9, and mounting hole 9b can be blind hole, at this moment, the second elasticity
Component is supported with magnetic yoke 9.Mounting hole 9b is also possible to through-hole, connects a plug in the through hole, the second elastomeric element and stifled
Head is supported, and plug can be screwed plug, and mounting hole 9b is threaded hole, and plug is threaded in mounting hole 9b, is led to
Adjustment adjustable second elastomeric element of plug is crossed to the tension power of friction plate 10.In one or more embodiments,
Two elastomeric elements preferably use spring.
As shown in Fig. 2, the course of work of powerless magnetic brake are as follows: when powerless magnetic brake is powered, pass through excitation
The magnetic field that coil generates generates friction plate 10 and is attracted active force, which overcomes the active force of the second elastomeric element,
It separates friction plate 10 with frictional disk 7, at this time if the coil on stator 2 obtains electricity, the first outer rotor 4 can be driven to rotate.When
When powerless magnetic brake powers off, magnetizing coil loses the effect for generating magnetic field, is not present to friction plate 10 and is attracted active force, the
The tension of two elastomeric elements release makes friction plate 10 be combined or be supported with frictional disk 7, thus between frictional disk 7 and friction plate 10
It generates friction force to brake frictional disk 7, and then makes to obtain braking action with the first fixed outer rotor 4 of frictional disk 7
Power.
For external rotor electric machine of the invention, wheel hub can be installed on the first outer rotor 4, tire is mounted on wheel hub
On, to form powered wheel.
As shown in Fig. 2, however when due to power loss, although powerless magnetic brake and frictional disk 7 generate friction force can
To play the role of formulation or parking, still, under power failure state, make equipment (such as wheelchair) by driving manually if necessary
Its movement (wheelchair cannot be parked in highway center) is moved, if user can not just release mistake in the case where no electricity supplement
Combination between electric electromagnetic brake and frictional disk 7, so as to cause equipment cannot (such as wheelchair) manually drive its movement.Cause
This, as further scheme of the invention, the powerless magnetic brake is equipped with far from one end of frictional disk 7 and drives in power loss
The manual releasing mechanism that powerless magnetic brake is separated with frictional disk 7, by manual releasing mechanism make powerless magnetic brake with
After frictional disk 7 separates, frictional disk 7 is no longer influenced by limitation, so that the first outer rotor 4 can rotate under manual actuation effect, this
Sample, so that it may so that equipment passes through its movement of manual actuation.
As shown in Figure 2 and Figure 5, magnetic yoke 9 is equipped with ring set 9c away from the axial end face of friction plate 10, in ring set 9c and magnetic yoke
Assembly cavity 9d is formed between 9, at least part of the manual releasing mechanism is located in assembly cavity 9d, at one or more
In a specific embodiment, manual releasing mechanism includes:
Pivoted housing 17 of the release disk 16 and empty set being connect with through-hole 16a and with powerless magnetic brake on mandrel 1,
As shown in Fig. 2, Fig. 6 to Fig. 8, release disk 16 is located in assembly cavity 9d, and the axial end face of release disk 16 is equipped with the first groove
16b, the first groove 16b are preferentially set on release axial end face of the disk 16 towards magnetic yoke 9.It is being additionally arranged manual releasing mechanism
Afterwards, connecting component 11 needs fixed with axial limiting component 12 after release disk 16, i.e., axial limiting component 12, which is limited in, releases
Sale at reduced prices 16 away from the axial end face of magnetic yoke 9 on, so that manual releasing mechanism and powerless magnetic brake be made to form connection.Release
Disk 16 is equipped with the second through-hole 16c, and the second through-hole 16c is stepped hole, connecting component 11 pass through after the second through-hole 16c with axial limit
Position component 12 is fixed.
As shown in Fig. 2, Fig. 6 to Fig. 8, the first elastomeric element 15, first elastic portion are equipped on powerless magnetic brake
After one end of part 15 and manual releasing mechanism are supported, which is stretched in manual releasing mechanism and power loss electromagnetic system
Between dynamic device.First elastomeric element 15 preferentially uses spring, and the first 15 sets of elastomeric element is in connecting component 11, the first elastic portion
15 one end of part position supported in the second through-hole 16c and with the step surface of the second through-hole 16c, the other end of the first elastomeric element 15 and
Axial limiting component 12 is supported, since the first elastomeric element 15 has elastic acting force, the first elastomeric element 15 is tensioned
Between manual releasing mechanism and powerless magnetic brake, so that release disk 16 be made to be in stress.
As shown in Fig. 2, Fig. 6 to Fig. 8, one end of pivoted housing 17 passes through the through-hole 16a of release disk, and the other end of pivoted housing 17 is at least
Block 17a is supported along what the pivoted housing radially extended equipped with one, supports 17 clearance fit of block in the setting ring of release disk 16 and magnetic yoke 9
Between the axial end face for covering 9c, a part for supporting block 17a is embedded into the first groove 16b, the first groove 16b's
Surface is arcwall face, and the surface for supporting block 17a is arcwall face.Further optimal setting, it is fixed on pivoted housing 17
A handle 18 is connected, pivoted housing 17 can be rotated in order to pass through handle 18 at any time.
As shown in Fig. 2, Fig. 6 to Fig. 8, pivoted housing 17 is rotated by handle 18, makes the first groove 16a's of disengaging to support block 17a
It is supported with the axial end face of release disk 16, it, should to push release disk 16 and powerless magnetic brake along the axial displacement of mandrel 1
In the process, the transmittance process of power are as follows: release disk 16 imparts power to axial limiting component 12 by the first elastomeric element 15,
Axial limiting component 12 imparts power to connecting component 11, so that connecting component 11 is moved axially with movable friction plate 10, in turn
Separate friction plate 10 with frictional disk 7.
As shown in Fig. 2, Fig. 6 to Fig. 8, further include a switch 19 and control motor work controller (do not show in figure
Out), switch 19 is electrically connected with the controller, switch 19 be fixed on release disk 16 on, switch 19 be equipped with tabletting 20, the tabletting 20 and
The circumferential surface of pivoted housing 17 is supported.Preferably, the circumferential surface of pivoted housing 17 is made of arc surface and scarf, wherein tabletting 20 and scarf
It supports.If power supply (battery) has electricity, but equipment (such as wheelchair) needs to travel by artificially manual actuation, at this moment, passes through
The pivoted housing 17 of rotation manual releasing mechanism, pivoted housing 17 applies pressure to tabletting 20 in rotation, so that switch 19 is switched on, control
After device obtains the signal of switch connection, controller disconnects power supply of the power supply to external rotor electric machine, to ensure that external rotor electric machine is not located
In electrically driven (operated) working condition, thus can safely and reliably manual driving device work.
The present invention is not limited to the above embodiments, such as:
The manual releasing mechanism and above-mentioned implementation the difference is that: first groove 16a be not set on release disk 16,
But it is located at magnetic yoke 9 towards the second groove, i.e. the second groove is equipped on the axial end face for supporting block in powerless magnetic brake and sets
On the axial end face for setting ring set 9c, rotation pivoted housing 17 makes the block 17a that supports for being detached from the second groove squeeze release 16 axial displacement of disk,
Release disk 16 drives the powerless magnetic brake connected with the release disk to separate with frictional disk.Remaining structure of manual releasing mechanism
Identical as above embodiment, details are not described herein.
For another example, support block 17a be it is rectangular-shaped, which is at least by chamfered there are two angle
Angle, chamfered can be chamfer processing, be also possible to round corner treatment.The shape of first groove 16b and support block 17a
Surface shape is coincide.Or support the surface of block 17a and can also be spherical, the surface of the first groove is also spherical.
Claims (9)
- It is fixed including mandrel, stator, magnet steel and the first outer rotor with cavity 1. a kind of external rotor electric machine of power loss braking Son is fixed on mandrel, and mandrel is equipped with the first bearing positioned at stator side, after the first outer rotor is mounted in first bearing, First outer rotor is looped around around stator, and magnet steel is mounted on the inner peripheral surface of the first outer rotor, which is characterized in that is also wrapped It includes:It is arranged on mandrel and is located at the second bearing of the stator other side；Frictional disk, the frictional disk are fixedly connected after being mounted in second bearing with the first rotor；Powerless magnetic brake on mandrel is set, which in conjunction with the frictional disk, rubs in power loss It wipes and is braked under the friction force that disk generates between powerless magnetic brake and the frictional disk, powerless magnetic brake exists It is separated when obtaining electric with frictional disk；Powerless magnetic brake includes: the magnetic yoke being fixed on mandrel, and magnetic yoke is equipped with magnetizing coil, and it is logical that magnetic yoke is equipped with first Hole；The friction plate being combined in power loss with frictional disk, the friction plate empty set is on mandrel；One end of connecting component, connecting component is connect with friction plate, and the other end of connecting component passes through be arranged in magnetic yoke first Through-hole, connecting component and first through hole clearance fit；Axial limiting component, the other end that axial limiting component passes through the first through hole with connecting component are fixed；One end of second elastomeric element, the second elastomeric element is mounted in magnetic yoke, the other end and friction plate of the second elastomeric element It supports, the second elastomeric element is spring.
- 2. a kind of external rotor electric machine of power loss braking according to claim 1, it is characterised in that: the power loss electromagnetic braking Device is equipped with the manual releasing mechanism for driving powerless magnetic brake to separate with frictional disk in power loss far from one end of frictional disk.
- 3. a kind of external rotor electric machine of power loss braking according to claim 2, it is characterised in that: in powerless magnetic brake It is equipped with the first elastomeric element, after one end of first elastomeric element and manual releasing mechanism are supported, first elastomeric element Tightly between manual releasing mechanism and powerless magnetic brake.
- 4. a kind of external rotor electric machine of power loss braking according to claim 2, it is characterised in that: magnetic yoke is away from friction plate Axial end face is equipped with ring set, and assembly cavity, at least part of the manual releasing mechanism are formed between ring set and magnetic yoke In the assembly cavity.
- 5. a kind of external rotor electric machine of power loss braking according to claim 2 to 4 any one, it is characterised in that: manually Releasing mechanism includes: to discharge the axial end face of disk with through-hole and the release disk that connect with powerless magnetic brake to be equipped with the One groove；Pivoted housing of the empty set on mandrel, one end of pivoted housing pass through the through-hole of release disk, and the other end of pivoted housing is at least provided with an edge What the pivoted housing radially extended supports block, and a part for supporting block is embedded into first groove, and rotation pivoted housing makes disengaging first The block of supporting of groove is supported with release disk axial end face, to push release disk and powerless magnetic brake along the axial position of mandrel It moves.
- 6. a kind of external rotor electric machine of power loss braking according to claim 5, it is characterised in that: the table of first groove Face is arcwall face, and the surface for supporting block is arcwall face.
- 7. a kind of external rotor electric machine of power loss braking according to claim 5, it is characterised in that: further include a switch with And the controller of control motor work, switch are electrically connected with the controller, switch is fixed on release disk, and switch is equipped with tabletting, The circumferential surface of the tabletting and pivoted housing is supported.
- 8. a kind of external rotor electric machine of power loss braking according to claim 2 to 4 any one, it is characterised in that: described Manual releasing mechanism includes: with through-hole and the release disk that connect with powerless magnetic brake；Pivoted housing of the empty set on mandrel, one end of pivoted housing pass through release disk, and the other end of pivoted housing is at least provided with one along the pivoted housing What is radially extended supports block；Powerless magnetic brake is equipped with the second groove towards the axial end face for supporting block, support block a part be embedded into it is described In second groove, rotation pivoted housing makes the block of supporting for being detached from the second groove squeeze release disk axial displacement, and release disk drive is released with this The powerless magnetic brake of sale at reduced prices connection is separated with frictional disk.
- 9. a kind of external rotor electric machine of power loss braking according to claim 1, it is characterised in that: the frictional disk is towards rubbing The axial end face of pad is equipped with resigning groove, and the end that the connecting component is connect with friction plate is located in the resigning groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810120201.3A CN108462267B (en) | 2018-02-07 | 2018-02-07 | A kind of external rotor electric machine of power loss braking |
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| CN201810120201.3A CN108462267B (en) | 2018-02-07 | 2018-02-07 | A kind of external rotor electric machine of power loss braking |
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| CN108462267B true CN108462267B (en) | 2019-09-03 |
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| CN109256897B (en) * | 2018-11-05 | 2019-10-25 | 大庆市华禹石油机械制造有限公司 | A kind of motor rotor upper lever hand arrestment mechanism |
| CN109962570A (en) * | 2019-05-13 | 2019-07-02 | 常州高尔登科技有限公司 | One kind is ridden instead of walk vehicle motor |
| CN111674371B (en) * | 2020-06-18 | 2021-07-16 | 何千 | Left foot brake and restriction system for automobile |
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| CN201450477U (en) * | 2009-06-30 | 2010-05-05 | 航天恒星空间技术应用有限公司 | Electromagnetic brake with hand-operated release knob for control motors |
| CN203278542U (en) * | 2013-06-03 | 2013-11-06 | 常熟市平方轮椅有限公司 | Electric wheelchair direct-current brushless driving wheel structure |
| CN205385392U (en) * | 2016-01-30 | 2016-07-13 | 河南省崇陵起重机电有限公司 | Electromagnetic braking solid rotor three -phase asynchronous motor |
| CN206237248U (en) * | 2016-11-16 | 2017-06-09 | 名泰机械制造有限公司 | A kind of permanent magnet synchronous type electric vehicle hub |
| CN206723312U (en) * | 2017-04-08 | 2017-12-08 | 安徽立信电磁离合器有限公司 | Electromagnetic power-off brake for Stroke Control of driving a vehicle |
| CN208062910U (en) * | 2018-02-07 | 2018-11-06 | 常州安耐雅康复器材有限公司 | A kind of external rotor electric machine of dead electricity braking |
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