CN109625146A - The compact built-in motor being driven using primary gear speed reducing - Google Patents
The compact built-in motor being driven using primary gear speed reducing Download PDFInfo
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- CN109625146A CN109625146A CN201910027143.4A CN201910027143A CN109625146A CN 109625146 A CN109625146 A CN 109625146A CN 201910027143 A CN201910027143 A CN 201910027143A CN 109625146 A CN109625146 A CN 109625146A
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- motor
- axis
- chain wheel
- clutch
- gear
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- 230000009467 reduction Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 description 13
- 239000000306 component Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M23/00—Transmissions characterised by use of other elements; Other transmissions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- 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
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Abstract
The invention discloses a kind of compact built-in motors being driven using primary gear speed reducing, including shell, motor body, clutch, gear reduction, axis and chain wheel, motor body includes stator, rotor and its mandrel, axis passes through the axis hole at shell both ends and the bottom bracket bearing by being set in shell supports positioning, and mandrel and axis are arranged in parallel；It is characterized in that shell is fastened to form by motor front/rear cover, motor body is the default minor structure of outer rotor, gear reduction includes the pinion gear fixed or be integrally provided on mandrel and the gear wheel being engaged with, gear wheel inner ring is fixed or is integrally formed with clutch outer, and clutch inner ring is mounted on axis by clutch bearing, and clutch inner ring front end is integrally formed the chain wheel positioning sleeve for stretching out shell axis hole to fix chain wheel.The electric machine structure is more compact, and volume is smaller, and components are less, is particularly suitable for the lower-powered electric bicycle of design of electrical motor, can greatly save production cost.
Description
Technical field
The present invention relates to a kind of compact built-in motors of The gear deceleration.
Background technique
Built-in motor is the power core component of electric bicycle, and the development in industry for built-in motor is at present with structure
Compact, small in size, output torque greatly main trend.
Existing built-in motor is usually all the structure of parallel expansion, and composition generally includes shell, motor body, tooth
Take turns deceleration mechanism, clutch, axis and chain wheel.The mandrel of motor body is by gear reduction and is nested with the tooth on axis
Disk or its positioning member are connected.Gear reduction mainly replaces original structure relatively numerous using stage-geared at present
Planetary gear reducing mechanism multiple, components are more.Clutch is typically installed at a certain intermediate gear of gear reduction
And its between transmission shaft, when bicycle coasting, clutch can cut off the pass of the transmission between chain wheel and the mandrel of motor body
Connection eliminates interference.In addition, also setting up torsion sensor on axis, the power of pedaling of foot is converted into corresponding electricity when for people to ride
Pressure signal exports the running power that motor is controlled to controller.Between axis and the gear of gear reduction often simultaneously
Also design single direction ratchet mechanism, the effect of this mechanism is inoperative or when revolving speed is not high ensures that people's pedal force can pass through in motor
Axis passes to gear reduction and then operates with movable chain wheel, and then cuts off axis and The gear deceleration after motor speed increases
The driven association of mechanism prevents people from stepping on to pedal and cause to interfere.
The built-in motor used on the market at present is mostly above structure, although this kind of built-in motor structure is compared in traditional
It sets motor and has various advantages, but we still have found it there are following deficiencies:
1) for a part of electric bicycle lower-powered for current design of electrical motor, higher deceleration is not needed actually
Than, but producer is at present without the selectable built-in motor that can only also use above-mentioned stage-geared, and it is well known that multistage tooth
The built-in motor of transmission is taken turns, other than comprising many driving parts such as intermediate gear and its transmission shaft, motor housing portion is past
Toward mounting bracket of the motor middle cover as intermediate gear that design between motor rear cover and front cover, production cost often compared with
Height, this undoubtedly causes the waste of resources of production.
2) built-in motor of existing stage-geared is applied on the electric bicycle of low-power machine, because of inside
Multiple stage gear reduction mechanism occupies larger space, further can not effectively reduce the radial dimension of optimization motor, cause motor whole
The structure and volume of body are still not compact enough, and also the installation positioning to motor on vehicle frame is made troubles.
3) traditional built-in motor often sets internal rotor external stator for motor body for the considerations of increasing reduction ratio
Structure type, the disadvantage is that motor output torque is small.And for electric bicycle lower-powered for design of electrical motor, it is actually right
There is no high requirement in reduction ratio, but still need biggish motor output torque, it is clear that current built-in motor is unable to satisfy
This requirement.
4) it is directed to existing single direction ratchet mechanism, has customer responsiveness, in the practical ride of bicycle, pedal center shaft is extremely
The time for obtaining force feedback (namely pawl is engaged the gear foundation transmission for making axis and gear reduction with ratchet) is slightly long, this
Key factor divides quantity very little in the ratchet etc. of ratchet sleeve inner ring, and ratchet clearance angle is too big.Certainly current solution is
Ratchet sleeve is re-worked to increase ratchet quantity, but does so one side difficulty of processing height, on the other hand needs to re-mold, and
It is bound to cause scrapping for existing ratchet sleeve, is wasted for enterprise higher.
Summary of the invention
Object of the present invention is to: a kind of compact built-in motor being driven using primary gear speed reducing is provided, structure is tighter
It gathers, volume is smaller, and components are less, and it is easy to produce, it is particularly suitable for the lower-powered electric bicycle of design of electrical motor, Neng Gou great
It is big to save production cost.
The technical scheme is that a kind of compact built-in motor being driven using primary gear speed reducing, including shell,
Motor body, clutch, gear reduction, axis and chain wheel, motor body include stator, rotor and the core fixed with rotor
Axis, axis passes through the axis hole at shell both ends and the bottom bracket bearing by being set in shell supports positioning, mandrel cloth parallel with axis
It sets；It is characterized in that shell is fastened to form by front motor cover and motor rear cover, motor body uses outer rotor inner stator knot
Structure, and gear reduction is primary gear speed reducing mechanism, including pinion gear that is fixed or being integrally provided on mandrel and with small tooth
Take turns the gear wheel of engagement, the inner ring of gear wheel and the outer ring of clutch fix or be integrally formed, and the inner ring of clutch by from
Clutch bearing is mounted on axis, and clutch inner ring front end is integrally formed the chain wheel positioning sleeve for stretching out shell axis hole to fix tooth
Disk.
Further, heretofore described interior of shell, which is equipped with, positions the machine core chamber of the motor body, is located at machine core
The deceleration chamber of gear reduction is accommodated in front of chamber and below deceleration chamber for wearing the middle axocoel of the axis
Room；The axis hole is respectively equipped on the front motor cover and motor rear cover；And it is formed on front motor cover and motor rear cover
Machine core chamber bearing block supports the positioning mandrel for installing mandrel bearing, while on motor rear cover and in chain wheel positioning sleeve
Axis chamber bearing block is equipped on circle for installing the bottom bracket bearing to support positioning axis, and chain wheel positioning sleeve is outer
Chain wheel positioning sleeve bearing is also equipped between circle and front motor cover.
Further, annular stator branch is fixed on the machine core chamber bearing block on heretofore described motor rear cover
Frame, the stator are fixed on annular stator bracket, and mandrel passes through among annular stator bracket.
Further, heretofore described rotor includes that the rotor flywheel guard being fixed on mandrel flies with rotor is fixed on
Wheel cover inner ring and the magnet steel opposite with stator, rotor flywheel guard in the fixed bit on mandrel setting between stator and pinion gear,
And the cover mouth of rotor flywheel guard is arranged backwards to pinion gear.After above-mentioned design, the present invention in rotor flywheel guard closer to
The output end (namely one end of setting pinion gear) of mandrel, it is towards pinion gear direction and defeated far from mandrel compared to rotor flywheel guard
The traditional design of outlet, the torque that rotor flywheel guard is applied on mandrel output end are more concentrated, and more directly, energy loss is smaller,
Be conducive to further increase torque.
It further, further include that the sensor sleeve being fixed on axis and the torsion in sensor sleeve pass in the present invention
Sensor, while single direction ratchet mechanism is equipped between clutch inner ring and axis, which includes that inner ring etc. is arranged with ratchet
Ratchet sleeve is equipped with several and ratchet with the pawl positioning ring in sensor sleeve and being located in ratchet sleeve, pawl positioning ring is fixed on
The pawl of cooperation, ratchet sleeve periphery are fixed with clutch inner ring.The working principle of torsion sensor is referring to routine techniques, the present invention
This is not made improvements.
Further, same two groups of pawls are staggeredly equipped on heretofore described pawl positioning ring, every group of pawl is equal
It is made of more than two pawls of the equiangularly spaced setting of the circumference along pawl positioning ring, wherein one group of pawl is main pawl,
And another group is secondary pawl, the interval angles of adjacent main pawl and secondary pawl are b on pawl positioning ring circumference, b not equal to n ×
A, wherein a is the single ratchet angle degree of ratchet sleeve inner ring equal part, which is also equal to the angular interval of two adjacent ratchets
Degree, n is positive integer.The design can significantly shorten in the practical ride of bicycle, pedal center shaft to obtain force feedback (namely
Pawl be engaged with ratchet make axis and gear reduction gear establish transmission) time, greatly improve user experience.And
It is easier to operate compared to ratchet sleeve inner ring ratchet is re-worked to increase by one group of pawl, not will cause original ratchet sleeve also and scrap, it can
Effectively save enterprise's resources of production reduce production cost.
Further, heretofore described chain wheel center is equipped with round center hole, and is set in by the round center hole
On chain wheel positioning sleeve, round center hole inner circumferential uniform intervals are convexly equipped with several semicircle convex keys, and chain wheel positioning sleeve periphery and chain wheel
Round center hole matching, and be correspondingly provided with the semicircle groove for the insertion of semicircle convex key thereon, while chain wheel positioning sleeve periphery
Screw thread is additionally provided with to lock nut to lock on the housing chain wheel.Original chain wheel and chain wheel positioning sleeve all use
Fang Jian and square groove cooperation positioning, chain wheel unbalance stress.And the processing that square groove is unfavorable for outer end screw thread is set on chain wheel positioning sleeve, it is right
It is unreliable in the locking positioning of chain wheel.It can ensure that chain wheel stress is equal using the cooperation of semicircle convex key and semicircle groove in the present invention
Weighing apparatus improves the force transmission effect between axis and chain wheel.And chain wheel positioning sleeve periphery is circumferential multiple equiangularly spaced
The design of the semicircle groove of setting is conducive to the processing of outer end screw thread.
Further, heretofore described gear wheel is nylon gear, and pinion gear is metal gear.A side is designed in this way
Face can ensure to be driven intensity, on the other hand can reduce gear mesh vibration, reduce noise.
Further, heretofore described clutch is unidirectional needle roller clutch.
Working principle of the present invention is as follows: in ride, when the revolving speed of people's pedal center shaft is higher than motor body output
When revolving speed, clutch Internal and external cycle is disengaged at this time, and the pawl of single direction ratchet mechanism is engaged with ratchet, and enable people's foot pedals power
Gear reduction and clutch inner ring are passed to by axis, and then is operated with movable chain wheel positioning sleeve and chain wheel.Due to clutch
The relationship that device Internal and external cycle disengages, the rotation torque of axis will not interfere with motor body, this course of work is not only suitable for motor body
The case where deceleration, is also applied for the case where motor body stops working (namely sliding state)；And work as the revolving speed of people's pedal center shaft
Less than motor body output revolving speed when (motor body runs at high speed at this time), the Internal and external cycle of clutch is stung tightly, and single direction ratchet
The pawl and ratchet of mechanism pass through big pinion gear meshed gears deceleration mechanism by the mandrel of motor body completely at this time
(primary gear speed reducing transmission) drives clutch around central axis, so that chain wheel positioning sleeve can drive chain wheel rotation output
Power, due to the relationship of pawl and ratchet, axis is not interfered in the operating of motor body.
The invention has the advantages that
1. the present invention is compared to the built-in motor that is widely used at present, gear reduction engaged only with large and small gear one
Grade gear reduced drive, gear wheel therein is by axis support positioning, in the motor for cancelling original support positioning intermediate gear
Many parts such as lid and gear shaft, so that enclosure volume is further reduced, motor is more compact, and components are less, to assemble
It is convenient, it is easy to produce, increase torque in combination with the motor body configuration of outer rotor inner stator, therefore is particularly suitable for motor and sets
It counts lower-powered electric bicycle and replaces existing built-in motor, production cost can be greatlyd save.
2. chain wheel positioning sleeve uses the bottom bracket bearing of inside and the tooth of periphery in interior of shell structure design of the invention
Disk positioning sleeving shaft contracts folder positioning support, while because chain wheel positioning sleeve is shaped on clutch inner ring, and clutch inner ring
It is supported further through clutch bearing, thereby, it is ensured that the support of gear wheel positions solid and reliable, Neng Gouji for clutch and thereon
The transmission stability of big raising gear reduction.Clutch bearing therein is used to support positioning axis simultaneously, and side
Bottom bracket bearing again simultaneously be used to support positioning chain wheel positioning sleeve, give full play to components functional characteristic in this way, both saved zero
Component, further optimization reduce housing interior volume, keep motor integrally more compact.
3. output end (namely one end of setting pinion gear) of the rotor flywheel guard closer to mandrel in the present invention, phase
Than rotor flywheel guard towards pinion gear direction and far from the traditional design of mandrel output end, it is defeated that rotor flywheel guard is applied to mandrel
Torque in outlet is more concentrated, and more directly, energy loss is smaller, is conducive to further increase torque.
4. being staggeredly equipped with same major and minor two groups of pawls on heretofore described pawl positioning ring, every group of pawl is by edge
More than two pawls of the equiangularly spaced setting of circumference are constituted, and the interval angles of main pawl adjacent on circumference and secondary pawl are
B, b are not equal to n × a, and wherein a is the single ratchet angle degree of ratchet sleeve inner ring equal part, and n is positive integer.The design can be shown
It writes and shortens in the practical ride of bicycle, (namely pawl is engaged pedal center shaft with ratchet makes axis and tooth to force feedback is obtained
Take turns deceleration mechanism gear establish transmission) time, greatly improve user experience.And one group of pawl of increase, which is compared, to be re-worked
Ratchet sleeve inner ring ratchet is easier to operate, not will cause original ratchet sleeve also and scraps, can effectively save enterprise's resources of production, reduce
Production cost.
5. in the present invention chain wheel and chain wheel positioning sleeve using the cooperation of semicircle convex key and semicircle groove can ensure chain wheel by
Power is balanced, improves the force transmission effect between axis and chain wheel.And chain wheel positioning sleeve periphery it is circumferential it is multiple angularly
The design of spaced semicircle groove is conducive to the processing of outer end screw thread.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and embodiments:
Fig. 1 is a kind of principal section figure of specific embodiment of the present invention；
Fig. 2 is the front view of the single direction ratchet mechanism in Fig. 1 embodiment；
Fig. 3 is the chain wheel front view in Fig. 1 embodiment.
Wherein: 1, clutch；1a, outer ring；1b, inner ring；2, axis；3, chain wheel；3a, round center hole；4, stator；5, turn
Son；5a, rotor flywheel guard；5b, magnet steel；6, mandrel；7, bottom bracket bearing；8, front motor cover；9, motor rear cover；10, pinion gear；
11, gear wheel；12, clutch bearing；13, chain wheel positioning sleeve；14, mandrel bearing；15, chain wheel positioning sleeve bearing；16, annular is fixed
Submounts；17, sensor sleeve；18, torsion sensor；19, ratchet；20, ratchet sleeve；21, pawl positioning ring；22, pawl；22a,
Main pawl；22b, secondary pawl；23, semicircle convex key；24, locking nut；A, machine core chamber；B, deceleration chamber；C, axis chamber.
Specific embodiment
Embodiment: below with reference to shown in Fig. 1 ~ Fig. 3 to it is provided by the invention it is this using primary gear speed reducing transmission it is tight
The specific embodiment of type built-in motor of gathering is described as follows:
As shown in Figure 1, it equally has shell, motor body, clutch 1, gear reduction, axis 2, tooth with routine techniques
Disk 3, sensor sleeve 17, torsion sensor 18 and single direction ratchet mechanism.Motor body includes stator 4, rotor 5 and consolidates with rotor 5
Fixed mandrel 6, axis 2 pass through shell both ends axis hole and by be set to shell in bottom bracket bearing 7 support positioning, mandrel 6 with
Axis 2 is arranged in parallel.Core of the invention improvement is:
Shell of the invention eliminates the design of motor middle cover, is directly fastened to form by front motor cover 8 and motor rear cover 9,
Interior of shell, which is equipped with, to be positioned the machine core chamber A of the motor body, accommodates subtracting for gear reduction in front of machine core chamber A
Fast chamber B and the axis cavity C for being used to wear the axis 2 below deceleration chamber B；Motor body is using in outer rotor 5
4 structure of stator, and machine core chamber bearing block is formed on front motor cover 8 and motor rear cover 9 for installing mandrel bearing 14
The mandrel 6 is positioned with support.
Still as shown in Figure 1, the gear reduction in the present invention is primary gear speed reducing mechanism, by being integrally provided on mandrel
Pinion gear 10 on 6 and the gear wheel 11 and clutch 1 engaged with pinion gear 10 collectively form, clutch 1 be unidirectional needle roller from
Clutch.The outer ring 1a of the inner ring of gear wheel 11 and clutch 1 is integrally formed in the present embodiment, and the inner ring 1b of clutch 1 passes through
Clutch bearing 12 is mounted on axis 2, and the clutch front end inner ring 1b is integrally formed the chain wheel positioning sleeve for stretching out shell axis hole
13 to fix chain wheel 3.It is respectively equipped with the axis hole on the front motor cover 8 and motor rear cover 9, specifically as shown in Figure 1, after motor
Axis chamber bearing block is equipped on lid 9 and on 13 inner ring of chain wheel positioning sleeve for installing the bottom bracket bearing 7 to support positioning
Axis 2, and chain wheel positioning sleeve bearing 15 is also equipped between the outer ring of chain wheel positioning sleeve 13 and front motor cover 8.
It is fixed with annular stator bracket 16 on machine core chamber bearing block on motor rear cover 9 described in the present embodiment, it is described
Stator 4 is fixed on annular stator bracket 16, and mandrel 6 passes through among annular stator bracket 16.The rotor 5 is by being fixed on core
Rotor flywheel guard 5a on axis 6 and it is fixed on rotor flywheel guard 5a inner ring and the magnet steel 5b opposite with stator 4 is collectively formed, rotor
Flywheel guard 5a is in the fixed bit on mandrel 6 setting between stator 4 and pinion gear 10, and the cover mouth of rotor flywheel guard 5a is backwards to small
Gear 10 is arranged, as shown in Figure 1.(namely setting is small closer to the output end of mandrel 6 by rotor flywheel guard 5a in the present embodiment
One end of gear 10), compared to rotor flywheel guard 5a towards 10 direction of pinion gear and far from 6 output end of mandrel traditional design,
The torque that rotor flywheel guard 5a is applied on 6 output end of mandrel is more concentrated, and more directly, energy loss is smaller, is conducive to further
Increase torque.
Or as shown in Figure 1, being fixed with sensor sleeve 17 and the torsion sensor in sensor sleeve 17 on axis 2
18, while single direction ratchet mechanism is equipped between 1 inner ring of clutch and axis 2, which includes that inner ring etc. is arranged with ratchet 19
Ratchet sleeve 20 and the pawl positioning ring 21 that is fixed in sensor sleeve 17 and is located in ratchet sleeve 20, set on pawl positioning ring 21
There are several pawls 22 cooperated with ratchet 19,20 periphery of ratchet sleeve is fixed with 1 inner ring of clutch.
Further combined with shown in Fig. 2, same two groups of pawls are staggeredly equipped on the pawl positioning ring 21, every group of pawl is equal
It is made of three pawls 22 of the equiangularly spaced setting of the circumference along pawl positioning ring 21, wherein one group of pawl is main pawl
22a, and another group is secondary pawl 22b.The angular interval of adjacent main pawl 22a and secondary pawl 22b on 21 circumference of pawl positioning ring
Degree is b, and b is not equal to n × a, and wherein a is 19 angle degree of single ratchet (angle namely adjacent of 20 inner ring equal part of ratchet sleeve
Two ratchets 19 interval angles), and n be positive integer.
Ratchet is total up to 30 in the present embodiment, after equal part the angle a of each ratchet 19 be 12 °, and in Fig. 2 b degree
It is 68 °, the positive integer times not equal to a.Certainly actually since two groups of pawls interlock and shift to install, adjacent main spine on circumference
There are two the interval angles of pawl 22a and secondary pawl 22b, and degree is different, only illustrates one of them in Fig. 2, but the two
It is not the positive integer times of ratchet angle every angle.Design ensures when one and spine in main pawl 22a and secondary pawl 22b in this way
When tooth 19 is engaged, another still disengages certain distance with ratchet 19, increases be engaged frequency of the pawl 22 with ratchet 19 with this, most
It is to significantly shorten in the practical ride of bicycle eventually, pedal center shaft is to obtaining force feedback (namely pawl 22 and ratchet 19
Occlusion establishes axis 2 and gear wheel 11 to be driven) time, greatly improve user experience.And increase by one group of pawl 22 to compare
It is easier to operate to re-work 20 inner ring ratchet 19 of ratchet sleeve, not will cause original ratchet sleeve 20 also and scrap, effectively save can look forward to
Industry resources of production reduce production cost.
As shown in connection with fig. 3, the center of chain wheel 3 described in the present embodiment is equipped with round center hole 3a, and passes through the circular central
Hole 3a is set on chain wheel positioning sleeve 13, and round center hole 3a inner circumferential uniform intervals are convexly equipped with 8 semicircle convex keys 23, and chain wheel is fixed
Set 13 periphery in position is matched with the round center hole 3a of chain wheel 3, and it is recessed to be correspondingly provided with the semicircle being embedded in for semicircle convex key 23 thereon
Slot, at the same 13 periphery of chain wheel positioning sleeve be additionally provided with screw thread to lock nut 24 with by chain wheel 3 locking on the housing,
As shown in connection with fig. 1.3 stress equalization of chain wheel can be ensured using the cooperation of semicircle convex key 23 and semicircle groove in the present invention, improved
Force transmission effect between axis 2 and chain wheel 3.And the 13 circumferential multiple equiangularly spaced settings in periphery of chain wheel positioning sleeve
The design of semicircle groove be conducive to the processing of outer end screw thread.
Gear wheel 11 described in the present embodiment is nylon gear, and pinion gear 10 is metal gear.Design one side in this way
It can ensure to be driven intensity, on the other hand can reduce 10 mesh vibration of gear, reduce noise.
Certainly the above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow be familiar with technique
People can understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all according to this hair
The modification that the Spirit Essence of bright main technical schemes is done, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of compact built-in motor being driven using primary gear speed reducing, including shell, motor body, clutch (1), tooth
Deceleration mechanism, axis (2) and chain wheel (3) are taken turns, motor body includes stator (4), rotor (5) and the mandrel fixed with rotor (5)
(6), axis (2) pass through shell both ends axis hole and by be set to shell in bottom bracket bearing (7) support positioning, mandrel (6) with
Axis (2) parallel arrangement；It is characterized in that shell is fastened to form by front motor cover (8) and motor rear cover (9), motor body
Using outer rotor (5) inner stator (4) structure, and gear reduction is primary gear speed reducing mechanism, including fixes or integrally set
In the pinion gear (10) on mandrel (6) and the gear wheel (11) engaged with pinion gear (10), the inner ring of gear wheel (11) and clutch
The outer ring (1a) of device (1) is fixed or is integrally formed, and during the inner ring (1b) of clutch (1) is mounted on by clutch bearing (12)
On axis (2), and the clutch inner ring front end (1b) is integrally formed the chain wheel positioning sleeve (13) for stretching out shell axis hole to fix chain wheel
(3).
2. the compact built-in motor according to claim 1 being driven using primary gear speed reducing, it is characterised in that described
Interior of shell, which is equipped with, to be positioned the machine core chamber (A) of the motor body, is located at receiving gear reduction in front of machine core chamber (A)
Deceleration chamber (B) and be located at below deceleration chamber (B) for wearing the axis chamber (C) of the axis (2)；Before the motor
The axis hole is respectively equipped on lid (8) and motor rear cover (9)；And it is formed on front motor cover (8) and motor rear cover (9) organic
Core cavity room bearing block positions the mandrel (6) for installing mandrel bearing (14) to support, while on motor rear cover (9) and chain wheel
It is equipped with axis chamber bearing block on positioning sleeve (13) inner ring and positions axis (2) for installing the bottom bracket bearing (7) to support,
And chain wheel positioning sleeve bearing (15) is also equipped between the outer ring and front motor cover (8) of chain wheel positioning sleeve (13).
3. the compact built-in motor according to claim 2 being driven using primary gear speed reducing, it is characterised in that described
It is fixed with annular stator bracket (16) on machine core chamber bearing block on motor rear cover (9), it is fixed that the stator (4) is fixed on annular
On submounts (16), mandrel (6) passes through among annular stator bracket (16).
4. the compact built-in motor according to claim 1 or 2 or 3 being driven using primary gear speed reducing, feature are existed
Include the rotor flywheel guard (5a) that is fixed on mandrel (6) in the rotor (5) and is fixed on rotor flywheel guard (5a) inner ring simultaneously
The magnet steel (5b) opposite with stator (4), fixed bit of the rotor flywheel guard (5a) on mandrel (6) is setting in stator (4) and small tooth
It takes turns between (10), and the cover mouth of rotor flywheel guard (5a) is arranged backwards to pinion gear (10).
5. the compact built-in motor according to claim 1 being driven using primary gear speed reducing, it is characterised in that also wrap
Include the sensor sleeve (17) being fixed on axis (2) and be set to sensor sleeve (17) on torsion sensor (18), while from
Single direction ratchet mechanism is equipped between clutch (1) inner ring and axis (2), which includes the ratchet that inner ring etc. is arranged with ratchet (19)
It covers (20) and is fixed on the pawl positioning ring (21) on sensor sleeve (17) and being located in ratchet sleeve (20), pawl positioning ring (21)
Several pawls (22) with ratchet (19) cooperation are equipped with, ratchet sleeve (20) periphery is fixed with clutch (1) inner ring.
6. the compact built-in motor according to claim 5 being driven using primary gear speed reducing, it is characterised in that described
Same two groups of pawls are staggeredly equipped on pawl positioning ring (21), every group of pawl is by the circumference isogonism along pawl positioning ring (21)
It spends spaced more than two pawls (22) to constitute, wherein one group of pawl is main pawl (22a), and another group is secondary pawl
(22b), adjacent main pawl (22a) and the interval angles of secondary pawl (22b) are b on pawl positioning ring (21) circumference, and b is not equal to
N × a, wherein a is single ratchet (19) angle degree of ratchet sleeve (20) inner ring equal part, and n is positive integer.
7. the compact built-in motor according to claim 1 or 2 being driven using primary gear speed reducing, it is characterised in that institute
Chain wheel (3) center is stated equipped with round center hole (3a), and be set on chain wheel positioning sleeve (13) by the round center hole (3a),
Round center hole (3a) inner circumferential uniform intervals are convexly equipped with several semicircle convex keys (23), and chain wheel positioning sleeve (13) periphery and chain wheel
(3) round center hole (3a) matching, and it is correspondingly provided with the semicircle groove for semicircle convex key (23) insertion thereon, while chain wheel
Positioning sleeve (13) periphery is additionally provided with screw thread to lock nut (24) to lock chain wheel (3) on the housing.
8. the compact built-in motor according to claim 1 being driven using primary gear speed reducing, it is characterised in that described
Gear wheel (11) is nylon gear, and pinion gear (10) is metal gear.
9. the compact built-in motor according to claim 1 being driven using primary gear speed reducing, it is characterised in that described
Clutch (1) is unidirectional needle roller clutch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027143.4A CN109625146B (en) | 2019-01-11 | 2019-01-11 | Compact central motor adopting primary gear reduction transmission |
| PCT/CN2019/120530 WO2020143340A1 (en) | 2019-01-11 | 2019-11-25 | Compact mid-drive motor using single-stage gear reduction drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027143.4A CN109625146B (en) | 2019-01-11 | 2019-01-11 | Compact central motor adopting primary gear reduction transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109625146A true CN109625146A (en) | 2019-04-16 |
| CN109625146B CN109625146B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910027143.4A Active CN109625146B (en) | 2019-01-11 | 2019-01-11 | Compact central motor adopting primary gear reduction transmission |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109625146B (en) |
| WO (1) | WO2020143340A1 (en) |
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| CN110525572A (en) * | 2019-06-21 | 2019-12-03 | 卧龙电气驱动集团股份有限公司 | A kind of secondary transmission vehicle using motor built-in motor |
| WO2020143340A1 (en) * | 2019-01-11 | 2020-07-16 | 苏州盛亿电机有限公司 | Compact mid-drive motor using single-stage gear reduction drive |
| CN111478515A (en) * | 2020-05-07 | 2020-07-31 | 无锡川克智能电机有限公司 | Outer rotor type middle-placed motor for electric power-assisted vehicle |
| CN111516795A (en) * | 2020-04-30 | 2020-08-11 | 常州洪记两轮智能交通工具有限公司 | Middle motor for electric power-assisted vehicle |
| CN113715952A (en) * | 2021-08-23 | 2021-11-30 | 爱克玛电驱动系统(苏州)有限公司 | Resultant force output middle shaft motor of electric bicycle |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109625146B (en) | 2024-03-15 |
| WO2020143340A1 (en) | 2020-07-16 |
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