CN108462267A - A kind of external rotor electric machine of dead electricity braking - Google Patents
A kind of external rotor electric machine of dead electricity braking Download PDFInfo
- Publication number
- CN108462267A CN108462267A CN201810120201.3A CN201810120201A CN108462267A CN 108462267 A CN108462267 A CN 108462267A CN 201810120201 A CN201810120201 A CN 201810120201A CN 108462267 A CN108462267 A CN 108462267A
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- China
- Prior art keywords
- dead electricity
- mandrel
- disk
- magnetic brake
- frictional disk
- Prior art date
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Classifications
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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
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- 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 dead electricity 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：It is arranged on mandrel and positioned 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；The powerless magnetic brake being arranged on mandrel, the powerless magnetic brake is combined in dead electricity 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 detached when obtaining electric with frictional disk.The external rotor electric machine of the present invention has the advantages that safe in dead electricity.
Description
Technical field
The present invention relates to motor field, more particularly to a kind of external rotor electric machine of dead electricity braking.
Background technology
With becoming increasingly popular for the electric vehicles such as electric vehicle, drive the wheel hub motor of hub rotation extensive by motor
Application band electric vehicle and other rotational structures, but the function of some wheel 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 wheel 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 wheel 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 wheel hub motor directly wraps up tire and constitutes driving wheel entirety.
In above-mentioned wheel hub motor, electromagnetic brake stator is fixed on motor shaft, when being powered to electromagnetic brake, electromagnetism
Brake movable plate is attracted with electromagnetic brake stator, is rubbed to make electromagnetic brake movable plate be formed with electromagnetic brake stator,
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 wheel 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
The state of separation 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 the occasion that some need parking,
It is necessarily in the state of dead electricity 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.
Invention content
The external rotor electric machine for the dead electricity braking that the purpose of the present invention is to provide a kind of for improving safety.
The technical solution for solving above-mentioned technical problem is as follows：
A kind of external rotor electric machine of dead electricity 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 positioned 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；
The powerless magnetic brake being arranged on mandrel, the powerless magnetic brake in dead electricity 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, dead electricity electromagnetic system
Dynamic device is detached when obtaining electric with frictional disk.
Said program is used, 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, friction plate is made to be detached 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 powers off, magnetizing coil loses
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 fixed first 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 some needs formulate or parking occasion, due to dead electricity 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 dead electricity also can be braked automatically external rotor electric machine suddenly, therefore the external rotor electric machine of the present invention contributes to
Improve safety of the equipment in dead electricity.
Description of the drawings
Fig. 1 is the outline structural diagram of the external rotor electric machine of the dead electricity braking of the present invention；
Fig. 2 is the cross-sectional view of Fig. 1；
Fig. 3 is the structural schematic diagram of the frictional disk in the present invention；
Fig. 4 is the dimensional structure diagram of yoke in the present invention；
Dimensional structure diagrams of the Fig. 5 for 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 stop collar, and 9 be 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 implementation mode
As shown in Figures 1 to 5, the external rotor electric machine of a kind of dead electricity 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：It 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 on second bearing 6 on 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 the first outer rotor 4 being made to rotate, the first outer rotor 4 drives frictional disk 7 to rotate.
Powerless magnetic brake is combined in dead electricity 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 7 fixed first outer rotor 4 of frictional disk,
To stop operating with the first outer rotor 4.Powerless magnetic brake is detached when obtaining electric with frictional disk 7.
The structure of preferred powerless magnetic brake is described in detail below：In one or more embodiments, it loses
Electric electromagnetic brake includes：The yoke 9 that is fixed on mandrel, is connect the friction plate 10 being combined with frictional disk in dead electricity
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, yoke 9 is equipped with centre bore, yoke 9 is sleeved on mandrel 1 and is circumferentially fastened as a whole with mandrel 1,
Preferably, yoke 9 is carried out with mandrel 1 by key circumferentially fixed.The axial direction of yoke 9 is restricted, it is preferable that in yoke 9 and
Between two bearings 6, it is equipped with stop collar 8,8 empty set of stop collar on mandrel 1, supported by one end and the second bearing 6 of stop collar 8
Top, the other end and the one end of yoke 9 towards friction plate 10 of stop collar 8 are supported, and nut 14, magnetic are fixed on mandrel 1
The other end of yoke 9 is supported with nut 14, to which yoke 9 and second bearing 6 obtain axial limiting.
As shown in Fig. 2, Fig. 4 and Fig. 5, yoke 9 is equipped with magnetizing coil (not shown), and yoke 9 is towards friction plate 10
Axial end face on formed receiving cavity 13, the magnetizing coil be mounted on the receiving cavity in.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 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 yoke 9, connecting component 11 and first through hole 9a clearance fits, 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 the friction plate being connect with connecting component 11
To movement.Axial end face of the frictional disk 7 towards friction plate 10 is equipped with resigning groove 7a, the connecting component 11 and friction
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 global formation to limiting component 12 and connecting component 11, with the radial protrusion formed in the other end of connecting component 11
Portion.Axial limiting component 12 can also be 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 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 yoke 9, and mounting hole 9b can be blind hole, at this moment, the second elasticity
Component is supported with yoke 9.Mounting hole 9b can also be through-hole, connect a plug in the through-hole, the second elastomeric element with it is 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
Cross the tension power that adjustment plug can adjust the second elastomeric element to 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 is：When powerless magnetic brake is powered, by excitatory
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,
So that friction plate 10 is detached 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, 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 7 fixed first outer rotor 4 of frictional disk
Power.
For the external rotor electric machine of the present 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 dead electricity, although powerless magnetic brake generate friction force with frictional disk 7 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 in the case where no electricity supplements, user can not just release mistake
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 the further scheme of the present invention, the one end of the powerless magnetic brake far from frictional disk 7 is equipped with and is driven in dead electricity
The manual releasing mechanism that powerless magnetic brake is detached with frictional disk 7, by manual releasing mechanism make powerless magnetic brake with
After frictional disk 7 detaches, frictional disk 7 is no longer influenced by limitation, to which 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, yoke 9 is equipped with ring set 9c away from the axial end face of friction plate 10, in ring set 9c and 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 yoke 9.It is being additionally arranged manual releasing mechanism
Afterwards, connecting component 11 needs to fix 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 yoke 9 on, to make manual releasing mechanism and powerless magnetic brake 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 is supported with manual releasing mechanism, which is stretched in manual releasing mechanism and dead electricity electromagnetic system
Between dynamic device.First elastomeric element 15 preferentially uses spring, the first elastomeric element 15 to be sleeved 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, to make release disk 16 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
If there are one block 17a is supported along what the pivoted housing radially extended, 17 clearance fit of block is supported in the setting ring for discharging disk 16 and yoke 9
Between the axial end face for covering 9c, the 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 design-aside, it is fixed on pivoted housing 17
A handle 18 is connected, in order to which pivoted housing 17 can be rotated by 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 of disengaging 16a's 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 is：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, to which connecting component 11 is moved axially with movable friction plate 10, in turn
Friction plate 10 is set to be detached 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
Go 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 in rotation to tabletting 20, to which switch 19 is switched on, controls
After device obtains the signal of switch connection, power supply of the controller deenergization 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：It discharges and first groove 16a be not set on disk 16,
But it is located at 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 of the second groove of disengaging squeeze release 16 axial displacement of disk,
Release disk 16 drives the powerless magnetic brake connected with the release disk to be detached with frictional disk.Remaining structure of manual releasing mechanism
Identical as the above embodiment, details are not described herein.
For another example, it is rectangular-shaped to support block 17a, which is at least by chamfered there are two angle
Angle, chamfered can be chamfer processing, can also be rounded corner processing.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 (10)
1. a kind of external rotor electric machine of dead electricity braking, including mandrel, stator, magnet steel and the first outer rotor with cavity, fixed
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 positioned 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；
The powerless magnetic brake being arranged on mandrel, the powerless magnetic brake are combined with the frictional disk in dead electricity, are rubbed
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 detached with frictional disk when obtaining electric.
2. a kind of external rotor electric machine of dead electricity braking according to claim 1, it is characterised in that：The dead electricity electromagnetic braking
The one end of device far from frictional disk is equipped with and drives the manual releasing mechanism that powerless magnetic brake is detached with frictional disk in dead electricity.
3. a kind of external rotor electric machine of dead electricity 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 is supported with manual releasing mechanism, first elastomeric element
Tightly between manual releasing mechanism and powerless magnetic brake.
4. a kind of external rotor electric machine of dead electricity braking according to claim 2, it is characterised in that：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 yoke
In the assembly cavity.
5. a kind of external rotor electric machine of dead electricity braking according to claim 2 to 4 any one, it is characterised in that：Manually
Releasing mechanism includes：The release disk being connect with through-hole and with powerless magnetic brake, the axial end face for discharging disk are 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 the 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 dead electricity 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 dead electricity braking according to claim 5, it is characterised in that：Further include one 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 dead electricity braking according to claim 2 to 4 any one, it is characterised in that：It is described
Manual releasing mechanism includes：The release disk being connect with through-hole and 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 of the second groove of disengaging squeeze release disk axial displacement, and release disk drive is released with this
The powerless magnetic brake of sale at reduced prices connection is detached with frictional disk.
9. a kind of external rotor electric machine of dead electricity braking according to any one of claims 1 to 4, it is characterised in that：Dead electricity
Electromagnetic brake includes：The yoke being fixed on mandrel, yoke are equipped with magnetizing coil, and yoke is equipped with first through hole；
The friction plate being combined with frictional disk in dead electricity, 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 yoke first
Through-hole, connecting component and first through hole clearance fit；
Axial limiting component, axial limiting component pass through the other end of the first through hole to fix with connecting component；
One end of second elastomeric element, the second elastomeric element is mounted in yoke, the other end and friction plate of the second elastomeric element
It supports.
10. a kind of external rotor electric machine of dead electricity braking according to claim 9, it is characterised in that：The frictional disk towards
The axial end face of friction plate is equipped with resigning groove, and the end that the connecting component is connect with friction plate is located at the resigning groove
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120201.3A CN108462267B (en) | 2018-02-07 | 2018-02-07 | A kind of external rotor electric machine of power loss braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120201.3A CN108462267B (en) | 2018-02-07 | 2018-02-07 | A kind of external rotor electric machine of power loss braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108462267A true CN108462267A (en) | 2018-08-28 |
| CN108462267B CN108462267B (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810120201.3A Active CN108462267B (en) | 2018-02-07 | 2018-02-07 | A kind of external rotor electric machine of power loss braking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256897A (en) * | 2018-11-05 | 2019-01-22 | 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 |
| CN111674371A (en) * | 2020-06-18 | 2020-09-18 | 何千 | Left foot brake and restriction system for automobile |
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| CN108462267B (en) | 2019-09-03 |
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