CN208424122U - Hub motor of electric bicycle with built-in power-assisted sensor - Google Patents
Hub motor of electric bicycle with built-in power-assisted sensor Download PDFInfo
- Publication number
- CN208424122U CN208424122U CN201820650577.0U CN201820650577U CN208424122U CN 208424122 U CN208424122 U CN 208424122U CN 201820650577 U CN201820650577 U CN 201820650577U CN 208424122 U CN208424122 U CN 208424122U
- Authority
- CN
- China
- Prior art keywords
- housing
- cover
- elastomer
- bearing holder
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 55
- 239000000806 elastomer Substances 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000011888 foil Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 7-1 Polymers 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to an electric bicycle wheel hub motor of built-in helping hand sensor, including the main shaft, characterized by: the simple supporting beam type force measuring mechanism is characterized in that a step platform is arranged on the main shaft, a bearing sleeve is sleeved on the main shaft, a square inner hole matched with the step platform in shape is sleeved on the bearing sleeve, the outer side of the bearing sleeve is supported on an end cover through an end cover supporting bearing, the inner side of the bearing sleeve is supported on the step platform, an elastic body supporting groove is arranged on the vertical side face of the step platform, an elastic body is lapped on the elastic body supporting groove to form a simple supporting beam structure, a strain gauge is fixedly connected to the inner side of the elastic body, a force transferring gasket is inserted in the groove of the side wall of the square inner hole of the bearing sleeve, and the simple supporting beam structure, the strain gauge. Has the advantages that: the utility model discloses the elastomer does not participate in wheel hub and supports, and the elastomer reliability is showing and is improving, and the elastomer need not torque signal's wireless sending module and receiving module for the fixed irrotational of motor shaft moreover, not only saves space but also saves the cost.
Description
Technical field
The utility model belongs to the wheel hub of electric bicycle electricity of motor field more particularly to a kind of built-in booster sensor
Machine.
Background technique
Currently, there are two types of electric bicycle Power assisted control modes, it is foot-operated one is bicyclist is measured by velocity sensor
Speed, the mode of power-assisted power is substantially estimated according to speed, and another kind is to measure bicyclist's pedal force, root by torque sensor
The mode of power-assisted power is accurately calculated according to the size of pedal force.Above two power-assisted mode, assistant sensor installation site are located at
The tach signal of axis or axis Moment signal are transmitted to electric machine controller, to control motor output work by five-way middle axle portion
Rate, to realize power-assisted.It is that structure is simple, impact resistance that two kinds of power-assisted modes, which respectively have the advantages of advantage and disadvantage, velocity profile power-assisted mode,
Ability is strong, at low cost, easy for installation, the disadvantage is that power-assisted effect is poor；The advantages of torque type power-assisted mode is that power-assisted effect is good, disadvantage
It is that structure is complicated, impact resistance ability is weak, at high cost, installation trouble.Although there are shortcomings in torque sensor, but it is being helped
Outstanding representation in power effect, middle and high end electric bicycle generally use torque sensor.In order to reduce torque sensor installation
The trouble of aspect, some companies release the hub motor of built-in torque sensor, such as patent document publication number CN107054542A
Disclose a kind of " hub motor with torque sensing function and the electric bicycle using the motor ".In above structure, elasticity
Body one end is affixed with flywheel, and the other end is affixed with motor wheel hub, and elastomer serves as hub support, and the impact for middle wheel hub of riding is straight
Connect and be loaded on elastomer, and elastomer cannot do again it is too thick, do it is more solid if deformation quantity it is too small, can not meet
Strain output requires, therefore poor reliability.And elastomer is rotated with wheel hub, therefore also needs torque signals wireless sending module
And receiving module, volume is big, structure is complicated, at high cost, and comprehensive performance is bad.Can design can be built in hub motor
In, power-assisted effect is good, and it is small in size, structure is simple, assistant sensor at low cost, high reliablity is the product expected in the industry.
Utility model content
Purpose of the utility model is to overcome the shortcomings of the above technology, and to provide a kind of the electronic of built-in booster sensor
The detection of torque is changed into the detection of pressure using mechanical support structure by bicycle hub motor, and elastomer is not involved in wheel hub
Support, the reliability of measuring force significantly improve.
In order to achieve the above object, the utility model adopts the following technical solutions: a kind of built-in booster sensor it is electronic from
Driving hub motor, including end cap, shell, stator and main shaft, it is characterized in that: the main shaft is equipped with ladder platform, ladder platform is horizontal
Cross sectional shape is square, and bearing holder (housing, cover) is set on the main shaft, and the bearing holder (housing, cover) is equipped with matched rectangular interior with ladder platform shape
Hole, the bearing holder (housing, cover) outside is through endcap support bearing support on end cap, and bearing holder (housing, cover) medial support is in ladder platform, the rank
Halfpace vertical side is equipped with elastomeric support groove, and elastomer is overlapped on elastomeric support groove, constitutes simple beam structure, institute
It states and is connected with foil gauge on the inside of elastomer, washer piece is plugged in bearing holder (housing, cover) square inner bore sidewall notches, bearing holder (housing, cover) set is shot
Simple beam structure, foil gauge and the power transmission gasket of property body collectively form freely-supported beam type power measuring mechanism.
The bearing holder (housing, cover) medial support is on several bearing holder (housing, cover) vertical direction support needle roller of ladder platform upper and lower surface.
The bearing holder (housing, cover) inner side end is equipped with radial concave station, is equipped with bearing holder (housing, cover) radical-thrust needle roller on radial concave station.
Buffer gap is equipped between the bearing holder (housing, cover) internal diameter and main shaft, the buffer gap is 0.05-0.15mm.
Elastomer fixed ring is linked on the main shaft, elastomer fixed ring is placed in ladder platform inner end, the elastomer
Fixed ring is equipped with elastomer and constitutes cantilever beam structure, is connected with foil gauge on the inside of elastomer, bearing holder (housing, cover) square inner bore side wall is set
There is bearing holder (housing, cover) inner bulge, cantilever beam structure, foil gauge and the bearing holder (housing, cover) inner bulge of bearing holder (housing, cover) suit elastomer collectively form
Beam type power measuring mechanism.
The utility model has the advantages that the utility model is with the variation of extremely simple structure measurement bicyclist's pedal force, while elastomer
It is not involved in hub support, reliability significantly improves；And elastomer phase does not rotate electric machine main shaft fixation, is not necessarily to torque signals
Wireless sending module and receiving module not only save space and save cost again.
Detailed description of the invention
Fig. 1 is the partial sectional view of the utility model；
Fig. 2 is the A-A transverse sectional view of the utility model embodiment 1；
Fig. 3 is the B-B longitudinal sectional view of the utility model embodiment 1；
Fig. 4 is longitudinal sectional block diagram of the utility model embodiment 1；
Fig. 5 is the exploded perspective figure of the utility model embodiment 1；
Fig. 6 is the bearing holder (housing, cover) and needle roller schematic diagram of the utility model embodiment 1；
Fig. 7 is the A-A transverse sectional view of the utility model embodiment 2；
Fig. 8 is the B-B longitudinal sectional view of the utility model embodiment 2；
Fig. 9 is longitudinal sectional block diagram of the utility model embodiment 2；
Figure 10 is the exploded perspective figure of the utility model embodiment 2；
Figure 11 is the bearing holder (housing, cover) and needle roller schematic diagram of the utility model embodiment 2；
Figure 12 is the elastomer schematic diagram of the utility model embodiment 2；
Figure 13 is the longitudinal sectional view of the utility model embodiment 3；
Figure 14 is the longitudinal sectional view of the utility model embodiment 4；
Figure 15 is the utility model hub motor stress diagram.
In figure: 1, main shaft, 1-1, needle roller contact surface, 1-2, elastomeric support platform, 2, bearing holder (housing, cover) vertical direction support needle roller,
2-1, bearing holder (housing, cover) radical-thrust needle roller, 3, bearing holder (housing, cover), 3-1, bearing holder (housing, cover) inner groovy, 3-2, bearing holder (housing, cover) inner bulge, 4, end cap branch
Support bearing, 5, end cap, 6, shell, 7, elastomer, 7-1, elastomer fixed ring, 8, power transmission gasket, 9, stator, 10, power-assisted signal
Output board, 11, flywheel, 12, foil gauge, 13, magnet steel, 14, Hall, 15, pedal, 16, chain, 301, bearing holder (housing, cover) and main shaft it is slow
Rush gap.
Specific embodiment
Specific embodiment of the present utility model is described in detail below with reference to preferred embodiment.
Embodiment 1
It is detailed in attached drawing 1-7, present embodiments provides a kind of electric bicycle hub motor of built-in booster sensor, including
End cap 5, shell 6, stator 9, torque signals output board 10, flywheel 11 and main shaft 1, the main shaft are equipped with ladder platform, ladder platform
Cross-sectional shape is square, and bearing holder (housing, cover) 3 is set on the main shaft, and the bearing holder (housing, cover) is equipped with matched rectangular with ladder platform shape
Inner hole, the bearing holder (housing, cover) outside are supported on end cap by endcap support bearing 4, needle roller of the bearing holder (housing, cover) medial support in ladder platform
On contact surface 1-1, needle roller contact surface upper surface is equipped with several bearing holder (housing, cover) vertical direction support needle rollers 2 above and below ladder platform.It is described
Ladder platform vertical side is equipped with elastomeric support groove type elastomer-forming supporting table 1-2, overlaps elastomer on elastomeric support platform
7, elastomeric support platform and elastomer constitute simple beam structure, are connected with foil gauge 12 on the inside of the elastomer, bearing holder (housing, cover) is rectangular
Washer piece 8, the elastomer simple beam structure of bearing holder (housing, cover) suit, strain are plugged in the bearing holder (housing, cover) inner groovy 3-1 of inner hole side wall
Piece and power transmission gasket collectively form freely-supported beam type power measuring mechanism.The bearing holder (housing, cover) inner side end is equipped with radial concave station, radial
Bearing holder (housing, cover) radical-thrust needle roller 2-1 is equipped on concave station.
Embodiment 2
Present embodiments provide a kind of electric bicycle hub motor of built-in booster sensor, including end cap 5, shell 6,
Stator 9, torque signals output board 10, flywheel 11 and main shaft 1, the main shaft are equipped with ladder platform, and ladder platform cross-sectional shape is in
It is rectangular, bearing holder (housing, cover) is set on the main shaft, the bearing holder (housing, cover) is equipped with and the matched square inner bore of ladder platform shape, the bearing
Set outside by endcap support bearing support on end cap, bearing holder (housing, cover) medial support on the needle roller contact surface 1-1 of ladder platform,
Needle roller contact surface upper surface is equipped with several bearing holder (housing, cover) vertical direction support needle rollers 2 to ladder platform up and down.Bullet is linked on the main shaft
Property body fixed ring 7-1, elastomer fixed ring is placed in ladder platform inner end, the elastomer fixed ring be equipped with elastomer constitute it is outstanding
Arm girder construction, elastomer inside are connected with foil gauge, and bearing holder (housing, cover) square inner bore side wall is equipped with bearing holder (housing, cover) inner bulge 3-2, bearing
Cantilever beam structure, foil gauge and the bearing holder (housing, cover) inner bulge of set suit elastomer collectively form beam type power measuring mechanism.
As shown in Fig. 3,8,13,14, the present embodiment preferred embodiment is that buffering is equipped between the bearing holder (housing, cover) internal diameter and main shaft
Gap 301, the buffer gap are 0.05-0.15mm, and there are gap between bearing holder (housing, cover) and main shaft, above-mentioned gap is less than elastomer
Maximum can deformation quantity, it is therefore intended that protection elastomer prevents the plastic deformation of elastomer caused by overloading.
Embodiment 3
Magnet steel is fixed in bearing holder (housing, cover), and Hall is fixed in main shaft, when bearing holder (housing, cover) is by chain pull, elastomer occurs small
Deformation, relative position changes between magnet steel and Hall, and correspondingly Hall output signal also changes.
Embodiment 4
Magnet steel is fixed in bearing holder (housing, cover), and Hall is fixed in elastomer fixed ring, when bearing holder (housing, cover) is by chain pull, makes elasticity
Miniature deformation occurs for body, and relative position changes between magnet steel and Hall, and correspondingly Hall output signal also changes.
The difference of embodiment 1 and embodiment 2 or embodiment 3 and embodiment 4 is on elastomer stress form, embodiment 1
It is simple beam structure with the elastomer stress form of embodiment 3, the elastomer stress form of embodiment 2 and embodiment 4 is cantilever
Girder construction.The difference of embodiment 1,2 and embodiment 3,4 is that the power detecting element of embodiment 1 and embodiment 2 is foil gauge, real
The power detecting element for applying example 3 and embodiment 4 is Hall.
The course of work and principle
For electric bicycle power-assisted, can accurately and timely understand bicyclist ride be intended that realization most preferably help
The key of power effect accurately measures the real-time change situation of bicyclist's pedal force.As shown in figure 15, bicyclist tramples pedal,
Pedal force F1 passes to flywheel by chain 16, and chain pull F2 passes through flywheel, end cap, endcap support bearing, bearing holder (housing, cover), washer
Piece is applied on elastomer, and it is proportional that there are sizes between bicyclist's pedal force F1 and the chain pull F2 being applied on elastomer
And the identical relationship of variation situation, therefore, as long as measuring the variation situation of elastomer institute stress, so that it may understand bicyclist's
It rides intention.In the utility model, elastomer, foil gauge, power-assisted signal output board constitute built-in hub assistant sensor.
As shown in figure 3, assistant sensor specific work process is, chain pull F2 acts on simply supported beam elastomer centre bit
It sets, forces elastomer that corresponding deformation occurs, attach and become elastomer deformation degree with resistance in the foil gauge on elastomer
The form of change amount passes to power-assisted signal output board, and power-assisted signal output board will export and variation feelings proportional to pedal force size
The identical electric signal of shape, electric machine controller export corresponding power according to above-mentioned power-assisted signal, realize power-assisted.
The hub motor of existing built-in torque sensor, torsion of the measured physical quantity between flywheel and motor housing
Square, the i.e. all torsion torque of bicyclist's drive hub, the utility model, which passes through, increases an axis between endcap support bearing and main shaft
Bearing sleeve, bearing holder (housing, cover) are not rotated relative to main shaft, can be come out the pull force calculation of chain horizontal direction by the utility model, thus
The detection of torque is changed into the detection of pressure, elastomer is not rotated with wheel hub, is not necessarily to wireless transmitter, is not only simplified knot
Structure, improves reliability at the drawbacks of also avoiding elastomeric support complete vehicle weight.
Above-mentioned the retouching in detail to a kind of electric bicycle hub motor progress of built-in booster sensor referring to embodiment
It states, is illustrative without being restrictive, several embodiments can be enumerated according to limited range, therefore do not departing from this
Change and modification under utility model general plotting should belong within the protection scope of the utility model.
Claims (5)
1. a kind of electric bicycle hub motor of built-in booster sensor, including end cap, shell, stator and main shaft, feature
Be: the main shaft is equipped with ladder platform, and ladder platform cross-sectional shape is square, and bearing holder (housing, cover), the axis are set on the main shaft
Bearing sleeve, which is equipped with, passes through endcap support bearing support in end cap with the matched square inner bore of ladder platform shape, the bearing holder (housing, cover) outside
On, for bearing holder (housing, cover) medial support in ladder platform, the ladder platform vertical side is equipped with elastomeric support groove, and elastomeric support is recessed
It is overlapped with elastomer on slot, constitutes simple beam structure, is connected with foil gauge, bearing holder (housing, cover) square inner bore side wall on the inside of the elastomer
Washer piece is plugged in groove, simple beam structure, foil gauge and the power transmission gasket of bearing holder (housing, cover) suit elastomer collectively form letter
Branch beam type power measuring mechanism.
2. the electric bicycle hub motor of built-in booster sensor according to claim 1, it is characterized in that: the bearing
Medial support is covered on several bearing holder (housing, cover) vertical direction support needle roller of ladder platform upper and lower surface.
3. the electric bicycle hub motor of built-in booster sensor according to claim 1 or 2, it is characterized in that: described
Bearing holder (housing, cover) inner side end is equipped with radial concave station, is equipped with bearing holder (housing, cover) radical-thrust needle roller on radial concave station.
4. the electric bicycle hub motor of built-in booster sensor according to claim 3, it is characterized in that: the bearing
It covers and is equipped with buffer gap between internal diameter and main shaft, the buffer gap is 0.05-0.15mm.
5. the electric bicycle hub motor of built-in booster sensor according to claim 1, it is characterized in that: the main shaft
On be linked with elastomer fixed ring, elastomer fixed ring is placed in ladder platform inner end, and the elastomer fixed ring is equipped with elasticity
Body constitutes cantilever beam structure, and foil gauge is connected on the inside of elastomer, and bearing holder (housing, cover) square inner bore side wall is equipped with bearing holder (housing, cover) inner bulge,
Cantilever beam structure, foil gauge and the bearing holder (housing, cover) inner bulge of bearing holder (housing, cover) suit elastomer collectively form beam type power measuring machine
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820650577.0U CN208424122U (en) | 2018-05-03 | 2018-05-03 | Hub motor of electric bicycle with built-in power-assisted sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820650577.0U CN208424122U (en) | 2018-05-03 | 2018-05-03 | Hub motor of electric bicycle with built-in power-assisted sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208424122U true CN208424122U (en) | 2019-01-22 |
Family
ID=65116995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820650577.0U Expired - Fee Related CN208424122U (en) | 2018-05-03 | 2018-05-03 | Hub motor of electric bicycle with built-in power-assisted sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208424122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445312A (en) * | 2018-05-03 | 2019-11-12 | 天津迪思科博科技发展有限公司 | Hub motor of electric bicycle with built-in power-assisted sensor |
-
2018
- 2018-05-03 CN CN201820650577.0U patent/CN208424122U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445312A (en) * | 2018-05-03 | 2019-11-12 | 天津迪思科博科技发展有限公司 | Hub motor of electric bicycle with built-in power-assisted sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104276251B (en) | Torque sensing system for middle shaft of electric vehicle | |
| CN201201674Y (en) | Torque force detector of electric bicycle | |
| CN204527509U (en) | A kind of built-in motor electrical bicycle middle shaft moment sensing system | |
| CN103171733B (en) | A kind of electrical bicycle middle shaft moment sensor | |
| CN204110305U (en) | A kind of battery-driven car axis moment sensing system | |
| CN201255672Y (en) | Force measuring sensor | |
| CN101231203B (en) | Electric vehicle force-aid sensor using virgula supporting member deformation | |
| WO2019000730A1 (en) | Pressure measuring device | |
| CN109263783B (en) | Electric power-assisted bicycle middle shaft torque sensor and pedaling frequency sensor system | |
| CN208424122U (en) | Hub motor of electric bicycle with built-in power-assisted sensor | |
| CN201177539Y (en) | Electric bicycle magnetic torquemoment sensing device | |
| CN201034760Y (en) | Electric bicycle centre shaft torque sensing device | |
| CN202807025U (en) | Foot power sensing mechanism of electric bicycle | |
| CN107336793A (en) | Moped axis torque sensor | |
| CN110445312A (en) | Hub motor of electric bicycle with built-in power-assisted sensor | |
| CN201909691U (en) | Torque detecting device for continuous rotating shafts | |
| CN216301376U (en) | Chain transmission middle axle moment sensing device for electric bicycle | |
| CN201522499U (en) | Motor speed sensor with elastic shaft coupling | |
| CN105758571A (en) | Torque sensor special for wheel hub motor | |
| CN201580520U (en) | Electric bicycle with chain pressure spring-type torque power sensor | |
| CN207163609U (en) | A kind of device for pressure measurement | |
| CN203172841U (en) | Center shaft torque sensing device for electric bicycle | |
| CN209470794U (en) | A kind of device for pressure measurement and bicycle tread sensors | |
| CN208559683U (en) | A kind of sensor unit suitable for electric vehicle | |
| TWM453843U (en) | Pedal force sensing mechanism of electric bicycle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190122 |