CN209134222U - Wheel hub motor for wheelchair with safety brake device - Google Patents
Wheel hub motor for wheelchair with safety brake device Download PDFInfo
- Publication number
- CN209134222U CN209134222U CN201822111140.2U CN201822111140U CN209134222U CN 209134222 U CN209134222 U CN 209134222U CN 201822111140 U CN201822111140 U CN 201822111140U CN 209134222 U CN209134222 U CN 209134222U
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- electromagnet
- stator
- movable plate
- friction plate
- friction
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Abstract
The utility model discloses the type relates to a wheel hub motor for wheelchair with safety brake device, characterized by: the electromagnet moving piece is provided with a plurality of fixed piece supporting sleeve through holes, a fixed piece supporting sleeve penetrates through the fixed piece supporting sleeve through holes, the electromagnet moving piece is connected with the fixed piece supporting sleeve in a sliding mode, one side end face of the fixed piece supporting sleeve is in contact with the electromagnet seat, the other side end face of the fixed piece supporting sleeve is in contact with the fixed piece, the fixed piece is fixedly connected with the electromagnet seat through a fixed piece fixing screw to form a containing space structure of the electromagnet moving piece and the friction piece, the friction piece is arranged between the electromagnet moving piece and the fixed piece, connecting fins are evenly distributed on the outer circle of the friction piece, and the connecting fins are embedded in rotor grooves in corresponding positions of the rotor to form an integrated structure. Has the advantages that: the support sleeve is arranged in the center hole of the friction plate, so that the effective force arm of the friction plate is increased to the maximum extent, the same friction torque can be realized by smaller size under the same pressure condition, and the purpose of light weight and miniaturization is achieved.
Description
Technical field
The utility model belongs to motor field more particularly to a kind of wheelchair hub motor with braking safety device.
Background technique
In view of using the physical qualification of wheelchair crowd, wheelchair hub motor must have brake function, and resistance of braking
Power will be met certain condition, and can such as be stopped on 9~10 degree of ramps.In order to meet the requirement of brake function, existing wheelchair is used
The mode that hub motor generallys use hub motor power-up electromagnetic brake device realizes brake function.While in order to meet biggish brake
Vehicle force request, traditional design are the electromagnetic brake devices using larger size.Traditional design theory is that friction plate can be generated
Friction torsion it is related with friction plate pressure and friction plate rubbing surface arm of force size.Therefore existing wheelchair is with hub motor
Increase friction torsion, necessarily increases the entire outer diameter of electromagnetic brake device.Although this kind of design concept can be improved friction
Torsion meets torque requiremnt, but cause wheel chair motor volume increase, weight increase, be not able to satisfy lightweight, miniaturization want
It asks.Currently, with the arrival of aging society, foldable wheelchair has been the development trend that market needs.For wheelchair user
Wheelchair is conveniently moved when transfer automobile or aircraft, size miniaturization folding as small as possible after light-weight and folding is urgently promoted in market
Folded wheelchair.In view of hub motor is installed at left and right sides of wheelchair, the volume of hub motor is excessive, axial dimension is too long, after folding
The axial distance of two hub motors is inevitable very big, then is unable to satisfy the requirement of miniaturization.It is researched and developed in industry a kind of simple for structure
Hub motor compact, small in size is the project that popularization minimizes, lightweight fully collapsible invalid's chair is urgently to be resolved.
Utility model content
The utility model in order to overcome the shortcomings in the prior art, provides a kind of wheelchair wheel with braking safety device
Hub motor makes electric machine structure concision and compact, small in size, light-weight.
The utility model to achieve the above object, is achieved through the following technical solutions, a kind of with braking safety device
Wheelchair hub motor, including stator, rotor and mainly by electromagnet base, electromagnet coil, electromagnet movable plate, electromagnet movable plate
The anti-slip mechanism of car of brake that reset spring, friction plate and manual unlocking unit are constituted, the electromagnet base center are solid equipped with coil
Determine boss, electromagnet coil is sleeved in coil fixing lug boss, and coil fixing lug boss is heavy equipped with electromagnet movable plate reset spring
Hole is run through to have in stator support sleeve via hole and be determined it is characterized in that: the electromagnet movable plate is equipped with several stator support sleeve via holes
Piece support sleeve, electromagnet movable plate are slidably connected with stator support sleeve, and the coil of one side end face of stator support sleeve and electromagnet base is solid
Determine boss surface to touch, another side end face of stator support sleeve is touched with stator, and stator passes through stator fixing screws and electromagnet base
The affixed containing space structure for constituting electromagnet movable plate and friction plate, is equipped with friction plate between the electromagnet movable plate and stator,
Friction plate outer circle is evenly equipped with connecting fin, and connecting fin chimeric with the rotor recesses of rotor corresponding position is in integral structure, the stator
Support sleeve is fixed on coil fixing lug boss surface, and stator support sleeve is all included in friction plate inner circle.
The height of the stator support sleeve is electromagnet movable plate thickness+friction plate thickness+0.1mm~0.2mm.
The stator support sleeve via hole and stator support sleeve quantity are 3-4, and are arranged on concentric circles.
The electromagnet movable plate is equipped with unlock screw rod via hole, the unlock screw threaded aperture on unlock screw rod and electromagnet base
It is spirally connected, the unlock spiro rod rear end head is equipped with screwdriver translot, and the corresponding unlock screw rod of the stator crosses hole site and is equipped with solution manually
Lock fabrication hole.
The friction plate is equipped with friction plate ladder platform in face of electromagnet movable plate direction, and friction plate ladder platform diameter is less than electromagnetism
Definitely piece diameter.
The utility model has the advantages that compared with prior art, support sleeve is built in inside friction plate centre bore by this, improve to greatest extent
The effective arm size of friction plate under identical pressure condition, can be realized identical moment of friction with smaller size, reach
Purpose is minimized to lightweight.It ensure that electric machine structure concision and compact, small in size, light-weight, help to realize fully collapsible invalid's chair
Lightweight and miniaturization.
Detailed description of the invention
Fig. 1 is the structure partial cross-sectional view of the utility model；
Fig. 2 is the explosive view left view of electromagnetic brake part；
Fig. 3 is the explosive view right view of electromagnetic brake part；
Fig. 4 is the three-dimensional cutaway view of electromagnetic brake part；
Fig. 5 is the partial exploded view of electromagnetic brake part.
In figure: 1, main shaft, 2, stator, 3, rotor, 3-1, rotor recesses, 4, rotor supports bearing, 5, electromagnet base, 5-
1, unlock screw threaded aperture, 5-2, electromagnet movable plate reset spring counterbore, 5-3, threaded hole, 5-4, coil fixing lug boss, 5-5,
Ball ejector spring counterbore, 6, electromagnet coil, 7, electromagnet movable plate, 7-1, unlock screw rod via hole, 7-2, stator support sleeve mistake
Hole, 8, friction plate, 8-1, connecting fin, 8-2, friction plate ladder platform, 9, stator, 9-1, manual unlocking fabrication hole, 10, stator branch
Support set, 11, stator fixing screws, 12, unlock screw rod, 13, electromagnet movable plate reset spring, 14, end cap, 15, endcap support axis
It holds, 16, wheel hub, 17, detent ball, 18, ball ejector spring, 19, unlocking signal switch, 20, protection cap, 21, release lever.
Specific embodiment
In conjunction with the preferred embodiment, to according to specific embodiment provided by the utility model, details are as follows:
It is detailed in attached drawing, the wheelchair hub motor with braking safety device that present embodiment discloses a kind of, including main shaft
1, stator 2, rotor 3, rotor supports bearing 4, end cap 14, endcap support bearing 15, wheel hub 16, wheel hub are externally provided with tire and master
It to be made of electromagnet base 5, electromagnet coil 6, electromagnet movable plate 7, electromagnet movable plate reset spring 13, friction plate 8, stator 9
Electromagnetic brake structure, further include manual unlocking unit and collectively form the anti-slip mechanism of car of brake with electromagnetic brake structure.It is described
Manual unlocking unit includes unlock screw rod 12 and release lever 21, and the electromagnet movable plate is equipped with circular hole, i.e. unlock screw rod mistake
Hole 7-1, electromagnet base are equipped with unlock screw threaded aperture 5-1 and unlock the interlude of screw rod after the unlock screw rod runs through circular hole
Screw thread is spirally connected with unlock screw threaded aperture, unlocks screw front end head and release lever is affixed, and the release lever drives unlock spiral shell
Bar clockwise or counterclockwise, while unlocking screw rod and done by its thread pitch and being moved axially back and forth, and unlock screw rod drives again
Electromagnet movable plate and friction plate are synchronized to do and be moved axially back and forth, are symmetrically arranged with reset spring counterbore in unlock screw threaded aperture two sides
5-2, reset spring counterbore are built-in with electromagnet movable plate reset spring 13.The outer end of anti-slip mechanism of car is equipped with protection cap 20.Ejection
Detent ball 17 is equipped between spring top and release lever leading inside face, electromagnet base is equipped with ball ejector spring counterbore
5-5, ball ejector spring counterbore are built-in with ball ejector spring 18, unlocking signal switch 19 are connected on electromagnet base.
The advantageous modification of the present embodiment is a kind of wheelchair hub motor with braking safety device, including fixed
Son, rotor and mainly by electromagnet base, electromagnet coil, electromagnet movable plate, electromagnet movable plate reset spring, friction plate and manually
The anti-slip mechanism of car of brake that unlocking unit is constituted, it is characterized in that: the electromagnet movable plate is equipped with several stator support sleeve mistakes
Hole, through there is stator support sleeve in stator support sleeve via hole, electromagnet movable plate is slidably connected with stator support sleeve, stator support sleeve
One side end face is touched with electromagnet base, and another side end face of stator support sleeve is touched with stator, stator by stator fixing screws with
The affixed containing space structure for constituting electromagnet movable plate and friction plate of electromagnet base, is equipped between the electromagnet movable plate and stator
Friction plate, friction plate outer circle are evenly equipped with connecting fin, and connecting fin chimeric with the rotor recesses of rotor corresponding position is in integral structure.Institute
The height for stating stator support sleeve is electromagnet movable plate thickness+friction plate thickness+0.1mm~0.2mm.
The preferred embodiment of the present embodiment is that the electromagnet movable plate is equipped with unlock screw rod via hole, unlocks screw rod and electromagnetism
Unlock screw threaded aperture on iron seat is spirally connected, and the unlock screw rod left end is equipped with screwdriver translot, the corresponding unlock of the stator
Screw rod crosses hole site equipped with manual unlocking fabrication hole 9-1.The effect of manual unlocking fabrication hole is: completing assembly electric brake assembly
Afterwards, the screwdriver translot that unlock spiro rod rear end head can be exposed by manual unlocking fabrication hole, can be realized hand using screwdriver
Dynamic unlock.
The preferred embodiment of the present embodiment is that the friction plate is equipped with friction plate ladder platform 8-2 in face of electromagnet movable plate direction,
The present embodiment friction plate ladder platform diameter be less than electromagnet stator diameter, be arranged friction plate ladder platform the purpose of be prevent friction plate with
Electromagnet stator outer diameter contact position generates bending stress, while preventing electromagnet movable plate to be attracted repeatedly, the mistake of release movement
Friction plate outer rim position is impacted in journey, leads to friction plate premature breakdown, when electromagnet movable plate discharges only with friction plate ladder platform
Fitting avoids friction plate outer rim position impaired.
The course of work and principle
When electric wheelchair is in on-electric driving status, electromagnet is powered off, and electromagnet movable plate resets bullet in electromagnet movable plate
Friction plate is pressed on stator under the action of spring, friction plate is clipped between stator and movable plate, and is squeezed, and is generated frictional force and is prevented
Rotor rotation generates anti-slip resistance to hub motor, prevents car slipping.When needing electric running, electromagnet is charged electromagnetism
Iron movable plate comes along the axial movement attraction of main shaft, friction plate by no longer by the extruding of stator and movable plate, friction plate stator with
Can be with the rotatably mounted rotation of rotor between movable plate, the rotary motion of rotor is from resistance, In-wheel motor driving wheelchair traveling.When
When electric wheelchair battery capacity deficiency, motor and electromagnet can not work, and since electromagnet can not work, movable plate is in always
The state of extrusion friction piece, friction plate prevent rotor from rotating, can not manually push wheelchair, want artificial promotion wheelchair at this time, first
It first needs to release anti-slip resistance manually, so as to easily push wheelchair.
Shown in Fig. 1-4, unlocks screw rod and electromagnet movable plate support sleeve is arranged at friction plate hollow interior, friction plate exists
The periphery of above-mentioned unlock screw rod and electromagnet support sleeve rotates freely, and the outer diameter part connecting fin of friction plate can directly and rotor key
It connects, greatly simplifies friction plate and rotor connection structure, connect compared to existing electromagnetism brake friction plate centre and rotor
The mode connect not only reduces radial dimension while can remove the connector of connection rotor and friction plate centre, both mitigates
Weight reduces axial dimension again, reduces integrated motor volume, weight saving, is advantageously implemented the lightweight, small of wheelchair
Type.
Electromagnetic brake device moment of friction is related with friction plate pressure and friction plate arm of force size, and the utility model will
Support is placed on inside friction plate centre bore, improves the effective arm size of friction plate, identical pressure condition to greatest extent
Under, identical moment of friction can be realized with smaller size, reach lightweight miniaturization purpose.
Assembling sequence are as follows: coil and electromagnet movable plate reset spring are installed in electromagnet base, unlock screw rod passes through electromagnet
Unlock screw rod via hole on movable plate simultaneously screws in electromagnet base, and the cap hook by unlocking screw rod lives electromagnet movable plate, overcomes electromagnet
Electromagnet movable plate is forgotten about it electromagnetism iron surface by the elastic force of movable plate reset spring, and is adjacent to movable plate with electromagnet base, by 4 stators
Support sleeve is respectively inserted into stator support sleeve via hole and is aligned with the threaded hole on electromagnet base, by hollow friction plate hollow portion
Position is placed on movable plate with accommodating above-mentioned stator support sleeve and unlock screw rod, and friction plate ladder table top and rotor contact, then is pacified
It blow-down and is spirally connected through stator and stator support sleeve with electromagnet base with screw, makes to keep one between stator and electromagnetism iron surface
Set a distance, this distance is identical as stator support sleeve height, and be equal to the sum of friction plate and stator thickness plus movable plate it is removable between
Gap, the specific size in gap are 0.1mm~0.2mm.When electromagnet electrification movable plate and electromagnet base are attracted, above-mentioned gap exists
Between movable plate and stator, friction plate is enable to rotate freely between stator and movable plate, when electromagnet powers off, stator is resetting
Above-mentioned gap is present between movable plate and electromagnet base when separating under spring effect with electromagnet base, and friction plate then by movable plate and is determined
Piece clamps, and friction plate is rotated by limitation at this time, provides anti-slip resistance to rotor.Pass through release lever band when manual unlocking
Dynamic unlock screw rod rotation retracts movable plate to be adjacent to electromagnet base by force to be made to generate above-mentioned gap between movable plate and stator, and then is made
Friction plate is freely rotatable, and releases anti-slip resistance.
It is above-mentioned referring to embodiment to a kind of detailed description that the wheelchair with braking safety device is carried out with hub motor,
It is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not departing from this reality
With the change and modification under novel general plotting, should belong within the protection scope of the utility model.
Claims (5)
1. a kind of wheelchair hub motor with braking safety device, including stator, rotor and mainly by electromagnet base, electromagnetism
The anti-slip vehicle device of brake that iron coil, electromagnet movable plate, electromagnet movable plate reset spring, friction plate and manual unlocking unit are constituted
Structure, the electromagnet base center are equipped with coil fixing lug boss, and electromagnet coil is sleeved in coil fixing lug boss, and coil fixation is convex
Platform is equipped with electromagnet movable plate reset spring counterbore, it is characterized in that: the electromagnet movable plate is equipped with several stator support sleeves
Via hole, through there is stator support sleeve in stator support sleeve via hole, electromagnet movable plate is slidably connected with stator support sleeve, and stator supports
The coil fixing lug boss surface for covering a side end face and electromagnet base touches, and another side end face of stator support sleeve is touched with stator, fixed
Piece passes through the affixed containing space structure for constituting electromagnet movable plate and friction plate of stator fixing screws and electromagnet base, the electromagnetism
Friction plate is equipped between iron movable plate and stator, friction plate outer circle is evenly equipped with connecting fin, the rotor of connecting fin and rotor corresponding position
Chimeric groove is in integral structure, and the stator support sleeve is fixed on coil fixing lug boss surface, and stator support sleeve is all included in
In friction plate inner circle.
2. the wheelchair hub motor according to claim 1 with braking safety device, it is characterized in that: the stator branch
The height of support set is electromagnet movable plate thickness+friction plate thickness+0.1mm~0.2mm.
3. the wheelchair hub motor according to claim 1 with braking safety device, it is characterized in that: the stator branch
Support set via hole and stator support sleeve quantity are 3-4, and are arranged on concentric circles.
4. the wheelchair hub motor according to claim 1 with braking safety device, it is characterized in that: the electromagnet
Movable plate is equipped with unlock screw rod via hole, and unlock screw rod is spirally connected with the unlock screw threaded aperture on electromagnet base, the unlock screw rod
Follower head is equipped with screwdriver translot, and the corresponding unlock screw rod of the stator crosses hole site equipped with manual unlocking fabrication hole.
5. the wheelchair hub motor according to claim 1 with braking safety device, it is characterized in that: the friction plate
It is equipped with friction plate ladder platform in face of electromagnet movable plate direction, friction plate ladder platform diameter is less than electromagnet stator diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822111140.2U CN209134222U (en) | 2018-12-17 | 2018-12-17 | Wheel hub motor for wheelchair with safety brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822111140.2U CN209134222U (en) | 2018-12-17 | 2018-12-17 | Wheel hub motor for wheelchair with safety brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209134222U true CN209134222U (en) | 2019-07-19 |
Family
ID=67248840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822111140.2U Active CN209134222U (en) | 2018-12-17 | 2018-12-17 | Wheel hub motor for wheelchair with safety brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209134222U (en) |
-
2018
- 2018-12-17 CN CN201822111140.2U patent/CN209134222U/en active Active
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