CN206850537U - A kind of wheelchair efficient permanent magnet direct current generator - Google Patents
A kind of wheelchair efficient permanent magnet direct current generator Download PDFInfo
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- CN206850537U CN206850537U CN201720804716.6U CN201720804716U CN206850537U CN 206850537 U CN206850537 U CN 206850537U CN 201720804716 U CN201720804716 U CN 201720804716U CN 206850537 U CN206850537 U CN 206850537U
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- wheelchair
- rear end
- end cap
- direct current
- current generator
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Abstract
The utility model discloses a kind of wheelchair efficient permanent magnet direct current generator, including stator, rotor assembly, drive end bearing bracket, rear end cap and brake, drive end bearing bracket and rear end cap are separately positioned on the rear and front end of stator, rotor assembly is placed on the inside of stator, brake is on rear end cap, the stator includes casing and is uniformly fixed on four magnet steel watt of internal side of shell, and magnet steel watt is made of high magnetic characteristics ferrite permanent-magnet；The iron core of the rotor assembly is arranged to flume structure, and commutator is also equipped with rotor assembly, and internal side of shell, which corresponds to, is uniformly provided with four wear-resisting carbon brush at commutator.By using magnet steel watt made of four high magnetic characteristics ferrite permanent-magnets, the load efficiency of motor can be effectively improved, is more saved；By the carbon brush structure of quadrupole four, current branch is added, reduces the operating current of carbon brush and winding, effectively extends the life-span of carbon brush.
Description
Technical field
Technical field of motors is the utility model is related to, more particularly to a kind of permanent magnet DC motor for wheelchair driving.
Background technology
World's aging is increasingly severe, and the demand of electric wheelchair also increases as.According to statistics, 2010, China's bag
Include the medicine equipment output value including wheelchair and be up to 150,000,000,000 yuan, with accounting for the global gross output value 6%, China turns into after the U.S., Japan
The third-largest medicine equipment country of consumption afterwards.Either domestic demand or state's outer vent, China electric wheelchair market all prospects are wide
It is wealthy.In American-European developed country, the elderly's dedicated manual wheelchair and common electric wheel-chair have occurred what is be phased out
Trend, superior performance, intelligent electric wheelchair easy to operate, traveling safety and reliability are the substitute is, and this is also to increase
The Main Trends of The Development of strong China electric wheelchair competitiveness.
Existing wheelchair permanent magnet DC motor load efficiency is relatively low, inadequate energy-conserving and environment-protective, and noise is big, and rotary speed unstabilization is fixed,
Forward and backward speed discrepancy is larger, is unfavorable for improving the accurate differential control of wheelchair Two-wheeled so that the stability of wheelchair and comfortable
Property is all poor；In addition, operating current is larger, service life is shorter, it is impossible to meets becoming for intelligent wheelchair, judicial convenience and hommization
Gesture demand.Therefore, it is necessary to existing wheel chair motor is improved and optimized.
Utility model content
To solve the deficiencies in the prior art, the utility model provides a kind of low noise, low energy consumption, the wheelchair of long-life with forever
Magnetic direct current generator, to reach higher fitted position precision.
Technical scheme is used by the utility model solves its technical problem：
A kind of wheelchair efficient permanent magnet direct current generator, including stator, rotor assembly, drive end bearing bracket, rear end cap and brake, it is preceding
End cap and rear end cap are separately positioned on the rear and front end of stator, and rotor assembly is placed on the inside of stator, and brake is mounted in rear end cap
On, the stator includes casing and is uniformly fixed on four magnet steel watt of internal side of shell, and magnet steel watt uses high magnetic characteristics ferrite
Permanent magnetism is made；The iron core of the rotor assembly is arranged to flume structure, and commutator is also equipped with rotor assembly, and internal side of shell is corresponding
Four wear-resisting carbon brush are uniformly provided with commutator.
The internal side of shell both ends are fixed with fixed mount, and the opposite side of two fixed mounts is uniformly provided with four positioning
Block, the locating piece on two fixed mounts are corresponded, and four magnet steel watt are fixed between two fixed mounts, the both ends point of each magnet steel watt
It is not stuck between adjacent two locating piece.
The rotor assembly includes the coil windings for being arranged on the rotating shaft of core center and being wound on iron core, rotating shaft both ends
Drive end bearing bracket and rear end cap center are positioned at by bearing respectively；The skewed slot central angle of iron core rotates against 13 °~15 °.
The rotating shaft rear end bearing uses ball bearing, and rear end cap inboard is fixed with bearing gland, bearing pressure by screw
Ball bearing is locked on rear end cap by lid.
The wheel hub of the brake is connected to rotor assembly rear end by spring pin.
The rear hood being connected on rear end cap is provided with outside the brake, brake, which is provided with, exposes the manual of rear hood
Brake lever.
The drive end bearing bracket outer ring is provided with angle index.
Power line has been picked out on the rear end cap, magnet ring is arranged with power line.
The beneficial effects of the utility model are：, can by using magnet steel watt made of four high magnetic characteristics ferrite permanent-magnets
The load efficiency of motor is effectively improved, is more saved；Iron core uses flume structure, can reduce slot effect and reduce electromagnetism and make an uproar
Sound, make motor speed more stable, forward and backward speed discrepancy is smaller, to reach higher precision grade, is easy to the left and right electricity of wheelchair
Machine Two-wheeled precision differential control, greatly improve the stability and comfortableness of wheelchair；In addition, pass through the carbon brush knot of quadrupole four
Structure, current branch is added, reduce the operating current of carbon brush and winding, effectively extend the life-span of carbon brush, can be very good
Meets the needs of intelligent wheelchair, judicial convenience and hommization.
Brief description of the drawings
The utility model is described further with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is side structure schematic view of the present utility model；
Fig. 3 is the decomposition texture schematic diagram of stationary part in the utility model；
Fig. 4 is the structural representation of rotor assembly part in the utility model；
Fig. 5 is rotor assembly tail end assembling structure schematic diagram in the utility model；
Fig. 6 is the structural representation of drive end bearing bracket in the utility model.
Embodiment
Referring to figs. 1 to Fig. 6, a kind of wheelchair efficient permanent magnet direct current generator, including stator 1, rotor assembly 2, drive end bearing bracket 3,
Rear end cap 4 and brake 5, drive end bearing bracket 3 and rear end cap 4 are separately positioned on the rear and front end of stator 1, and rotor assembly 2 is placed in stator 1
Inner side, brake 5 is on rear end cap 4.Stator 1 includes casing 11 and is uniformly fixed on four magnet steel watt of the inner side of casing 11
12, magnet steel watt 12 is made of high magnetic characteristics ferrite permanent-magnet, and its remanent magnetism Br is more than 420mT high magnetic characteristics ferrite permanent-magnet,
The inner side both ends of casing 11 are fixed with fixed mount 13, and the opposite sides of two fixed mounts 13 is uniformly provided with four locating pieces 14, and two
Locating piece 14 on fixed mount 13 is corresponded, and four magnet steel watt 12 are fixed between two fixed mounts 13, each magnet steel watt 12
Both ends are stuck between adjacent two locating piece 14, and four magnet steel watt 12 are spatially uniformly distributed, and pass through determining for fixed mount 13
Position, error are less than 1 °, and be equipped with special magnetizing tooling again after fixed integrally magnetizes to stator, can effectively control divided stator in batches
The stability and uniformity of cloth, provide a stabilization, uniformity good efficient magnetic field for motor work；It is big by using remanent magnetism Br
In 420mT high magnetic characteristics ferrite permanent-magnet as magnet steel watt 12, the load efficiency of motor can be made to reach more than 80%, than passing
The efficiency of system direct current generator 70% or so more saves.
The rotating shaft 22 of the rotor assembly 2 including center, the iron core 21 in rotating shaft 22 and it is wound on iron core 21
Coil windings 23, the both ends of rotating shaft 22 are positioned at drive end bearing bracket 3 and the center of rear end cap 4 by bearing respectively；Iron core 21 is arranged to skewed slot
Structure, skewed slot central angle rotate against 13 °~15 °.Iron core 21 rotates against 13 °~15 ° flume structures using central angle, can subtract
Few slot effect simultaneously reduces electromagnetic noise and starting current, to reach a more satisfactory effect, while effective reduction electricity
Magnetic noise, and make that motor speed is stable and batch motor speed uniformity is good, forward and backward speed discrepancy is smaller, to reach higher
Precision grade, it is easy to the left and right motor Two-wheeled precision differential control of wheelchair, greatly improves the stability of wheelchair and relax
Adaptive.
The rear end bearing of rotating shaft 22 uses ball bearing 25, and the inboard of rear end cap 4 is fixed with bearing gland 26 by screw,
Ball bearing 25 is locked on rear end cap 4 by bearing gland 26, and the wheel hub 51 of brake 5 is connected to rotating shaft by spring pin 52
22 rear ends, its outside are provided with the rear hood 6 being connected on rear end cap 4, are additionally provided with brake 5 and expose the manual of rear hood 6
Brake lever 53, in order to electric brake or the handover operation of hand-operated brake pattern.Ball bearing 25 is pressed by bearing gland 26
Tightly, and rotating shaft 22 and ball bearing 25 are interference fit so that the axial movement value of rotating shaft 22 is close to 0, and brake is effectively ensured
The wheel hub 51 of device 5 makes brake more stable when operating, noise is smaller, while also improves making for brake without axial float
Use the life-span.
Commutator 24 is housed, the roughness of commutator 24 is controlled in Ra=between the rear end of rotor assembly 2 and iron core 21
0.6 μm~1.2 μm, concentricity control is uniformly provided with four wear-resisting carbon at 6 μm, the corresponding commutator 24 in the inner side of casing 11
Brush.By using built-in wear-resisting carbon brush, carbon brush sound when the external carbon brush compared to traditional push chairs motor can more effectively control operation
Sound spreads, and further reduces noise；By actual verification, motor operation noise is less than 54dB in 30CM distance tests, than passing
System more than wheel chair motor 60dB noise is quieter.Simultaneously as using the permanent magnetism quadrupole being evenly distributed and four uniform carbon brush
Electric power-feeding structure, current branch is added than traditional brush structure wheel chair motor of the two poles of the earth two, reduces the work of carbon brush and winding
Electric current, the life-span of carbon brush is effectively extended, through experiment, electrical machinery life was more than 3000 hours, than traditional push chairs motor 1500 hours
Life-span it is longer.
The outer ring of drive end bearing bracket 3 is provided with angle index 31, to adapt to different series electric wheelchair to the fast quick-mounting of motor
The angle requirement matched somebody with somebody, ensure the stability and uniformity of motor size performance after assembling to greatest extent, improve motor in assembling chi
Precision on very little and rate performance.In addition, also having picked out power line 41 on rear end cap 4, magnet ring 42 is arranged with power line 41, with
Just electromagnetic interference is prevented, plastic housing is cased with outside magnet ring 42, to avoid it from breaking up.
It is described above, simply better embodiment of the present utility model, but the utility model is not limited to above-described embodiment,
As long as it reaches technique effect of the present utility model with any same or similar means, protection of the present utility model should be all included in
Within the scope of.
Claims (8)
1. a kind of wheelchair efficient permanent magnet direct current generator, including stator (1), rotor assembly (2), drive end bearing bracket (3), rear end cap (4)
With brake (5), drive end bearing bracket (3) and rear end cap (4) are separately positioned on the rear and front end of stator (1), and rotor assembly (2) is placed in fixed
On the inside of sub (1), brake (5) is on rear end cap (4), it is characterised in that：The stator (1) is solid including casing (11) and uniformly
Four magnet steel watt (12) being scheduled on the inside of casing (11), magnet steel watt (12) are made of high magnetic characteristics ferrite permanent-magnet；Described turn
The iron core (21) of sub- assembly (2) is arranged to flume structure, and commutator (24), casing (11) inner side are also equipped with rotor assembly (2)
Corresponding commutator (24) place is uniformly provided with four wear-resisting carbon brush.
A kind of 2. wheelchair efficient permanent magnet direct current generator according to claim 1, it is characterised in that：In the casing (11)
Side both ends are fixed with fixed mount (13), and the opposite side of two fixed mounts (13) is uniformly provided with four locating pieces (14), and two is solid
The locating piece (14) determined on frame (13) is corresponded, and four magnet steel watt (12) are fixed between two fixed mounts (13), each magnet steel
The both ends of watt (12) are stuck between adjacent two locating piece (14).
A kind of 3. wheelchair efficient permanent magnet direct current generator according to claim 1, it is characterised in that：The rotor assembly
(2) coil windings (23) for being arranged on the rotating shaft (22) at iron core (21) center and being wound on iron core (21), rotating shaft (22) are included
Both ends are positioned at drive end bearing bracket (3) and rear end cap (4) center by bearing respectively；The skewed slot central angle of iron core (21) rotates against
13 °~15 °.
A kind of 4. wheelchair efficient permanent magnet direct current generator according to claim 3, it is characterised in that：After the rotating shaft (22)
End bearing uses ball bearing (25), and rear end cap (4) is inboard to be fixed with bearing gland (26) by screw, and bearing gland (26) will
Ball bearing (25) is locked on rear end cap (4).
A kind of 5. wheelchair efficient permanent magnet direct current generator according to claim 1, it is characterised in that：The brake (5)
Wheel hub (51) rotor assembly (2) rear end is connected to by spring pin (52).
A kind of 6. wheelchair efficient permanent magnet direct current generator according to claim 5, it is characterised in that：The brake (5)
Outer to be provided with the rear hood (6) being connected on rear end cap (4), brake (5) is provided with the hand-operated brake handle for exposing rear hood (6)
(53)。
A kind of 7. wheelchair efficient permanent magnet direct current generator according to claim 1, it is characterised in that：The drive end bearing bracket (3)
Outer ring is provided with angle index (31).
A kind of 8. wheelchair efficient permanent magnet direct current generator according to claim 1, it is characterised in that：The rear end cap (4)
On picked out power line (41), magnet ring (42) is arranged with power line (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720804716.6U CN206850537U (en) | 2017-07-03 | 2017-07-03 | A kind of wheelchair efficient permanent magnet direct current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720804716.6U CN206850537U (en) | 2017-07-03 | 2017-07-03 | A kind of wheelchair efficient permanent magnet direct current generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850537U true CN206850537U (en) | 2018-01-05 |
Family
ID=60803888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720804716.6U Active CN206850537U (en) | 2017-07-03 | 2017-07-03 | A kind of wheelchair efficient permanent magnet direct current generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564400A (en) * | 2019-05-13 | 2021-03-26 | 珠海格力电器股份有限公司 | Magnetic suspension bearing, motor, compressor and air conditioner |
-
2017
- 2017-07-03 CN CN201720804716.6U patent/CN206850537U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564400A (en) * | 2019-05-13 | 2021-03-26 | 珠海格力电器股份有限公司 | Magnetic suspension bearing, motor, compressor and air conditioner |
| CN112564400B (en) * | 2019-05-13 | 2022-05-17 | 珠海格力电器股份有限公司 | Magnetic suspension bearing, motor, compressor and air conditioner |
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