CN208715407U - A kind of electric assisted bicycle axis torque sensor - Google Patents
A kind of electric assisted bicycle axis torque sensor Download PDFInfo
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- CN208715407U CN208715407U CN201821412883.7U CN201821412883U CN208715407U CN 208715407 U CN208715407 U CN 208715407U CN 201821412883 U CN201821412883 U CN 201821412883U CN 208715407 U CN208715407 U CN 208715407U
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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
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a kind of electric assisted bicycle axis torque sensors, to solve the problems, such as in the prior art because the component placement in axis torque sensor causes the size of axis torque sensor in radial directions very big.The electric assisted bicycle axis torque sensor includes: axis；The chain sprocket of one end of axis is installed on by first bearing；The dynamometry sleeve being sheathed on axis, dynamometry sleeve are connect with chain sprocket by first clutch；The ess-strain sensing element being installed on dynamometry sleeve；Hollow shaft housing is sheathed on the other end of axis；The axis signal processing unit being mounted on hollow shaft housing, is connected between ess-strain sensing element and axis signal processing unit by axis conducting wire；It is sheathed on the sensor housing of the other end of axis；The Main Processor Unit being mounted on sensor housing transmits signal by a pair of of induction coil between Main Processor Unit and axis signal processing unit.
Description
Technical field
The utility model relates to electric vehicle technical field, specifically a kind of electric assisted bicycle axis moment sensing
Device.
Background technique
The hybrid electric vehicles that electric assisted bicycle belongs to manpower and is driven by electricity, its main feature is that motor is pressed with manpower
Certain proportion provides driving moment simultaneously, this ratio is controlled by computer program, is changed according to the travel speed of bicycle, with
The raising of speed, torque ratio provided by power-driven system will be gradually reduced, until the max. speed of system limitation.With it
The marked difference of his driving system for electric vehicles is: the reference input of electric assisted bicycle control system is cyclist's effect
Torque on foot-operated, stepping on frequency, speed etc., real-time trackings signal determines the output work of motor by intelligentized control program
Rate reaches the effect of riding of people computer system, more environmentally-friendly, healthy.
Hybrid mode of the electric assisted bicycle using " manpower+electric power ", the light and handy and convenience of existing bicycle,
Burden when bicycle upward slope, contrary wind, loading can be effectively made up again, and the power-assisted that electric power provides not only solves cycling expense
The problem of power, while cooperating the driving of manpower, course continuation mileage is big, and realization is ridden at a distance, obtains traditional bike tech
Thoroughly to change.
From composed structure, electric assisted bicycle is to be carried based on standard bicycle with torque sensor and control
Device processed be core dynamical system, with torque sensor go perception bicyclist step on foot-operated dynamics, in conjunction with step on frequency, speed signal into
Row judgement controls dynamical system as bicyclist and provides corresponding power-assisted support, and therefore, structure is complicated for electric assisted bicycle, skill
Art content is high, while torque sensor is the core of electric assisted bicycle.
The electric assisted bicycle torque sensor of the prior art has rear axle hook pressure sensor, chain wheel torsional spring sensing
Device, the pressure types such as chain type sensor and axis torque sensor.Wherein there are the effects of elastic hysteresis for rear axle hook pressure sensor
It answers, chain wheel torsional spring sensor accuracy is poor, and pressure chain type sensor can generate error signal due to the shake of chain, and three rides
Experience it is all poor.The good still Central shaft type torque sensor of comprehensive comparison at present, by directly measuring cyclist
The torque on axis is acted on by pedal, signal errors is small, is quick on the draw.
For axis torque sensor, crank and pedal are installed on the axis both sides of electric assisted bicycle,
In ride, the bipod of people is alternately scrunched, and is transmitted torque on the sprocket wheel on the right side of axis by axis, before driving bicycle
Into the torque on axis is bilateral alternate.Axis torque sensor is mounted on the position of five axises, is mechanically coupled with axis,
By the dimensional space very little that axis torque sensor can occupy, for inside axis torque sensor electronic component and
The structure arrangement of mechanical organ is extremely difficult.
The electric assisted bicycle axis torque sensor of the prior art is all monolithic construction, by using on axis
Long casing realizes double-side torque measurement, and signal wire is drawn from fixing shell, and the axis torque sensor of monoblock type makes dynamometry system
The radial dimension of system is big, the component layouts being unfavorable for inside dynamometric system.
Summary of the invention
The purpose of this utility model is to provide a kind of electric assisted bicycle axis torque sensors, to solve existing skill
Because the component placement in axis torque sensor causes the size of axis torque sensor in radial directions is very big to ask in art
Topic.
The technical solution of the utility model are as follows:
The utility model provides a kind of electric assisted bicycle axis torque sensor, comprising: axis；
Chain sprocket is installed on one end of the axis by first bearing；
Dynamometry sleeve is sheathed on the axis, the dynamometry sleeve and the axis unitary rotation, and the dynamometry
Sleeve is connect with the chain sprocket by first clutch；
Ess-strain sensing element is installed on the dynamometry sleeve；
Hollow shaft housing is sheathed on the other end of the axis, the hollow shaft housing and the axis unitary rotation, described
Dynamometry sleeve is between the hollow shaft housing and the chain sprocket；
Axis signal processing unit is mounted on the hollow shaft housing, the ess-strain sensing element and it is described in
It is connected between axis signal processing unit by axis conducting wire, and the axis conducting wire is attached at institute along the axis direction of the axis
It states on axis；
Sensor housing, is sheathed on the other end of the axis, the hollow shaft housing be located at the sensor housing and
Between the dynamometry sleeve；
Main Processor Unit is mounted on the sensor housing, the Main Processor Unit and the axis signal processing
By a pair of of induction coil electromagnetism connection between unit, and the axis signal processing unit can be relative to the Main Processor Unit
Rotation.
Preferably, the first mounting groove is offered on the end face of the side of the dynamometry sleeve far from the axis, it is described
Ess-strain sensing element is placed in first mounting groove；
The end face of the hollow shaft housing towards the side of the sensor housing offers the second mounting groove, the axis letter
The second induction coil in number processing unit and a pair of of induction coil is placed in second mounting groove, and at the middle axis signal
Reason unit is connected with second induction coil by conducting wire；
The end face of side of the sensor housing towards the hollow shaft housing offers third mounting groove, the main process task
The first induction coil in unit and a pair of of induction coil is placed in the third mounting groove, and the Main Processor Unit and described
First induction coil is connected by conducting wire；
Second induction coil can be rotated relative to first induction coil, second induction coil rotate to
Have when at the opposite position of first induction coil, between first induction coil and second induction coil pre-
Set a distance.
Preferably, clearance fit between the dynamometry sleeve and the axis, and the dynamometry sleeve and the axis are logical
Cross key connection.
Preferably, the hollow shaft housing is spirally connected with the axis by the first screw, and first screw passes through institute
It states hollow shaft housing and is bolted in the axis.
Preferably, the axis Wire stick is set on the outer surface of the axis；Or,
The axis conducting wire is arranged in the 4th mounting groove opened up on the outer surface of the axis；Or,
The axis conducting wire is arranged in the mounting hole that the axis is arranged in the axial direction, the both ends point of the mounting hole
It is not connected to the outer surface of the axis.
Preferably, further includes: motor input shaft and motor output shaft, the motor input shaft pass through gear assembly band
Move the motor output shaft rotation；
The motor input axle sleeve is located on the axis, the motor input shaft and the axis clearance fit, described
Motor input shaft is between the hollow shaft housing and the dynamometry sleeve；
The motor output shaft is supported on the motor input shaft by second bearing, and the motor output shaft is sheathed on
On the dynamometry sleeve, and with the dynamometry sleeve clearance fit；The motor output shaft passes through second clutch and the chain
Wheel disc connection.
Preferably, further includes: sender unit cap, electric motor end cap, shell and bearing cap,
One end of the sender unit cap is connect with the sensor housing by the second screw, the sender unit cap it is another
The one end at end, one end of the electric motor end cap and the shell is spirally connected by third screw；The other end of the electric motor end cap is logical
It crosses 3rd bearing to be sheathed on the motor input shaft, and is sheathed on the hollow shaft housing by fourth bearing；The shell
The other end and one end of the bearing cap be spirally connected by the 4th screw, the shell is supported on the motor by 5th bearing
On input shaft；The other end of the bearing cap is supported on the chain sprocket by 6th bearing.
Preferably, the first check ring and second spring that interference fit is formed with the axis are arranged on the axis
Retaining ring, first check ring fit in side of the first bearing far from the dynamometry sleeve, the second spring gear
Circle fits in side of the hollow shaft housing far from the dynamometry sleeve；
The bearing snap spring that interference fit is formed with the chain sprocket, the bearing snap spring and institute are arranged on the chain sprocket
State 6th bearing fitting setting.
The utility model has the following beneficial effects:
Electric assisted bicycle axis torque sensor provided by the utility model utilizes the dynamometry set being mounted on axis
Cylinder measurement torque signals can accurately measure electric assisted bicycle ride so that torque dynamometric system is compact-sized
In bilateral scrunch legpower square.Entire torque dynamometric system adopts a split structure, so that the middle part in torque dynamometric system
The radial dimension divided is small, meets the structural requirement of gear assembly.Meanwhile leading between the electrical component in torque dynamometric system
It crosses wired and wireless sensing mode to connect, flexible layout is convenient to install and maintain.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model；
Fig. 2 is the tomograph of axis；
Fig. 3 is the tomograph of dynamometry sleeve；1-sender unit cap；2-third screws；3-electric motor end caps；4-thirds
Bearing；5-axis conducting wires；6-shells；7-motor output shafts；8-5th bearings；9-bearing snap springs；10-6th bearings；
11-ess-strain sensing elements；12-dynamometry sleeves；121-the first mounting groove；13-first bearings；14-the first spring catch
Circle；15-axis；151-the four mounting groove；16-chain sprockets；17-bearing caps；181-first clutches；182-the second
Clutch；19-the four screw；20-keys；21-second bearings；22-motor input shafts；23-the four left bearing；In 24-
Empty axle sleeve；25-axis signal processing units；26-sensor wires；27-sensor housings；28-Main Processor Units；29—
Second spring retaining ring；30-the first screw；31-the first induction coil；32-the second induction coil；33-the second screw.
Specific embodiment
Referring to figs. 1 to Fig. 3, the utility model provides a kind of electric assisted bicycle axis torque sensor, comprising: in
Axis 15；Chain sprocket 16 is installed on one end of axis 15 by first bearing 13；Dynamometry sleeve 12 is sheathed on axis 15,
Dynamometry sleeve 12 and 15 unitary rotation of axis, and dynamometry sleeve 12 is connect with chain sprocket 16 by first clutch 181；Stress
Strain sensing element 11 is installed on dynamometry sleeve 12；Hollow shaft housing 24 is sheathed on the other end of axis 15, hollow shaft
Set 24 and 15 unitary rotation of axis, dynamometry sleeve 12 is between hollow shaft housing 24 and chain sprocket 16；Axis signal processing unit
25, it is mounted on hollow shaft housing 24, passes through middle spindle guide between ess-strain sensing element 11 and axis signal processing unit 25
Line 5 is connected to, and axis conducting wire 5 is attached on axis 15 along the axis direction of axis 15；Sensor housing 27, is sheathed on
The other end of axis 15, hollow shaft housing 24 is between sensor housing 27 and dynamometry sleeve 12；Main Processor Unit 28, is mounted on
On sensor housing 27, connected between Main Processor Unit 28 and axis signal processing unit 25 by a pair of of induction coil electromagnetism,
And axis signal processing unit 25 can be rotated relative to Main Processor Unit 28.
Due to the ess-strain sensing element 11 for being acquired the torque generated to the rotation of axis 15 and it is collected
The axis signal processing unit 25 that is handled of torque signals and Main Processor Unit 28 be provided separately, it is no longer integrated between three
In the same part, in this way, it is possible to reduce carry out torque acquisition in axis torque dynamometric system and the component of processing is occupied
Radial space, and then the size of the dynamometric system in radial directions can be reduced, simultaneously as occupied in dynamometric system
Radial space reduces, and is arranged convenient for the layout of other components inside dynamometric system.
The inclined-plane and threaded hole of fixed foot pedal are had at the both ends of axis 15, foot pedal is by way of being spirally connected in
Axis 15 is fixed.When user tramples foot pedal, axis 15 is rotated with the rotation of foot pedal, is turned with 15 one of axis
Dynamic dynamometry sleeve 12 drives chain sprocket 16 to rotate by first clutch 181, and the rotation of chain sprocket 16 drives chain and rear-wheel
Rotation, and then realize the movement of bicycle.In order to realize the unitary rotation between axis 15 and dynamometry sleeve 12, in the application,
12 clearance fit of axis 15 and dynamometry sleeve, and the two realizes transmission by the connection of key 20.
The ess-strain sensing element 11 being mounted on dynamometry sleeve 12 is specially a stress strain gauge, in axis 15
When rotating under the drive of foot pedal, torque is generated on axis 15, the ess-strain induction being mounted on dynamometry sleeve 12
Element 11 generates torque signals by the deformation of material, and generated torque signals are transmitted to axis letter by axis conducting wire 5
Number processing unit 25, axis signal processing unit 25 carry out processing to the torque signals received and obtain moment values, pass through a pair
Moment values after treatment are transferred to Main Processor Unit 28 by the electromagnetic induction between induction coil, and Main Processor Unit 28 is logical
Cross the control system that electric assisted bicycle is transmitted it to across the sensor wire 26 of sensor housing 27, control system root
It is compared according to the moment values and pre-stored moment values that measure, judges whether that motor is needed to be driven, if desired motor
Driving inputs corresponding target output torque value to motor, so that motor is exported with target output torque value.
In order to realize fixation of the hollow shaft housing 24 on axis 15, hollow shaft housing 24 and axis 15 by the first screw 30 into
Row is spirally connected, and the first screw 30 passes through hollow shaft housing 24 and is bolted in axis 15.
In order to realize the fixation of ess-strain sensing element 11, in the application, referring to Fig. 3, in dynamometry sleeve 12 far from
The first mounting groove 121 is offered on the end face of the side of axis 15, ess-strain sensing element 11 is placed in the first mounting groove 121,
Ess-strain sensing element 11 is fastened in first mounting groove 121, and one end of axis conducting wire 5 is connected to ess-strain induction member
On part 11, and by way of fitting in the dynamometry sleeve 12 and axis 15 and being arranged cabling to being mounted on hollow shaft housing 24
Axis signal processing unit 25.In order to realize the fixation of axis signal processing unit 25 and Main Processor Unit 28, referring to Fig.1,
The end face of hollow shaft housing 24 towards the side of sensor housing 27 offers the second mounting groove, axis signal processing unit 25 and one
The second induction coil 32 in induction coil is placed in the second mounting groove, and axis signal processing unit 25 and the second induction
Coil 32 is connected by conducting wire；The end face of sensor housing 27 towards the side of hollow shaft housing 24 offers third mounting groove, main
The first induction coil 31 in processing unit 28 and a pair of of induction coil is placed in third mounting groove, and Main Processor Unit 28 and the
One induction coil 31 is connected by conducting wire；Second induction coil 32 can be rotated relative to the first induction coil 31, in the second induction
When the rotation of coil 32 is as at the opposite position of the first induction coil 31, the first induction coil 31 and the second induction coil 32 it
Between have preset distance.Signal communication between axis signal processing unit 25 and Main Processor Unit 28 incudes using in a pair
The mode of electromagnetic induction carries out wireless signal transmission between coil, reduces the harness setting in dynamometric system.
For axis conducting wire 5, the other end due to its needs from one end cabling of axis 15 to axis 15, in
There are many wire laying modes on axis 15, for example, axis conducting wire 5 is attached on the outer surface of axis 15, in dynamometry sleeve 12
The limiting slot that centering spindle guide line 5 is limited is opened up on outer surface, in this way, can prevent axis conducting wire 5 from occurring on axis 15
Play；Or, axis conducting wire 5 is arranged in the 4th mounting groove 151 opened up on the outer surface of axis 15, centering spindle guide line 5 exists
Position on axis 15 is limited, meanwhile, the position for the other components that be set on axis 15 will not be caused to interfere；
Or, axis conducting wire 5 is arranged in the mounting hole that axis 15 is arranged in the axial direction, the both ends of mounting hole are respectively communicated to axis
15 outer surface equally also may be implemented centering spindle guide line 15 and be limited, and avoid other on axis 15 to being mounted on
Component causes to interfere.
Preferably, referring to Fig.1, it for the electric assisted bicycle axis torque sensor in the application, also wraps
Include: motor input shaft 22 and motor output shaft 7, motor input shaft 22 drive motor output shaft 7 to rotate by gear assembly；
Motor input shaft 22 is set on axis 15, and motor input shaft 22 and 15 clearance fit of axis, motor input shaft 22 are located at hollow
Between axle sleeve 24 and dynamometry sleeve 12；Motor output shaft 7 is supported on motor input shaft 22 by second bearing 21, motor output
Axis 7 is sheathed on dynamometry sleeve 12, and with 12 clearance fit of dynamometry sleeve；Motor output shaft 7 passes through second clutch 182 and chain
Wheel disc 16 connects.
Wherein, it determines to need motor driven in the control system of electric assisted bicycle, issues signal to motor, make
It obtains motor and carries out driving moment output, in this way, motor input shaft 22 rotates, revolving speed conversion is carried out by gear assembly, is made
It obtains motor output shaft 7 to be rotated, motor output shaft 7 drives chain sprocket 16 to rotate by second clutch 182, and then drives chain
Item and vehicle wheel rotation realize the movement of bicycle.
Preferably, referring to Fig.1, electric assisted bicycle axis torque sensor further include: sender unit cap 1, motor side
One end of lid 3, shell 6 and bearing cap 17, sender unit cap 1 is connect with sensor housing 27 by the second screw 33, sender unit cap
One end of 1 other end, one end of electric motor end cap 3 and shell 6 is spirally connected by third screw 2；The other end of electric motor end cap 3 passes through
3rd bearing 4 is sheathed on motor input shaft 22, and is sheathed on hollow shaft housing 24 by fourth bearing 23；Shell 6 it is another
End and one end of bearing cap 17 are spirally connected by the 4th screw 19, and shell 6 is supported on motor input shaft 22 by 5th bearing 8；
The other end of bearing cap 17 is supported on chain sprocket 16 by 6th bearing 10.
Referring to Fig.1, the first check ring 14 and second spring that interference fit is formed with axis 15 are arranged on axis 15
Retaining ring 29, the first check ring 14 fit in side of the first bearing 13 far from dynamometry sleeve 12, and second spring retaining ring 29 is bonded
In side of the hollow shaft housing 24 far from dynamometry sleeve 12；The bearing that interference fit is formed with chain sprocket 16 is arranged on chain sprocket 16
Circlip 9, bearing snap spring 9 are bonded setting with 6th bearing 10.
The setting purpose of above-mentioned the first check ring 14, second spring retaining ring 29 and bearing snap spring 9 is, to it is respective
The position of the bearing of fitting is limited, and prevents bearing from moving.
In addition, in the utility model, it, can for the gear assembly between motor input shaft 22 and motor output shaft 7
To realize the transmission between motor input shaft 22 and motor output shaft 7 using the mode of epicyclic gearing.
Electric assisted bicycle axis torque sensor provided by the utility model utilizes the dynamometry being mounted on axis 15
Sleeve 12 measures torque signals and can accurately measure electric assisted bicycle so that torque dynamometric system is compact-sized and ride
In the process bilateral scrunches legpower square.Entire torque dynamometric system adopts a split structure, so that in torque dynamometric system
Between part radial dimension it is small, meet the structural requirement of gear assembly.Meanwhile the electrical component in torque dynamometric system it
Between connected by wired and wireless sensing mode, flexible layout is convenient to install and maintain.
Claims (8)
1. a kind of electric assisted bicycle axis torque sensor characterized by comprising axis (15)；
Chain sprocket (16) is installed on one end of the axis (15) by first bearing (13)；
Dynamometry sleeve (12) is sheathed on the axis (15), and the dynamometry sleeve (12) and the axis (15) integrally turn
It is dynamic, and the dynamometry sleeve (12) is connect with the chain sprocket (16) by first clutch (181)；
Ess-strain sensing element (11) is installed on the dynamometry sleeve (12)；
Hollow shaft housing (24), is sheathed on the other end of the axis (15), the hollow shaft housing (24) and the axis (15)
Unitary rotation, the dynamometry sleeve (12) is between the hollow shaft housing (24) and the chain sprocket (16)；
Axis signal processing unit (25) is mounted on the hollow shaft housing (24), the ess-strain sensing element (11)
It is connected between the axis signal processing unit (25) by axis conducting wire (5), and the axis conducting wire (5) is along the axis
(15) axis direction is attached on the axis (15)；
Sensor housing (27), is sheathed on the other end of the axis (15), and the hollow shaft housing (24) is located at the sensing
Between device housing (27) and the dynamometry sleeve (12)；
Main Processor Unit (28) is mounted on the sensor housing (27), the Main Processor Unit (28) and the axis
By a pair of of induction coil electromagnetism connection between signal processing unit (25), and the axis signal processing unit (25) can be opposite
It is rotated in the Main Processor Unit (28).
2. electric assisted bicycle axis torque sensor according to claim 1, which is characterized in that in the dynamometry set
Cylinder (12) offers the first mounting groove (121) on the end face far from the side of the axis (15), the ess-strain induction member
Part (11) is placed in first mounting groove (121)；
The end face of the hollow shaft housing (24) towards the side of the sensor housing (27) offers the second mounting groove, it is described in
The second induction coil (32) in axis signal processing unit (25) and a pair of of induction coil is placed in second mounting groove, and institute
It states axis signal processing unit (25) and is connected with second induction coil (32) by conducting wire；
The end face of side of the sensor housing (27) towards the hollow shaft housing (24) offers third mounting groove, the master
The first induction coil (31) in processing unit (28) and a pair of of induction coil is placed in the third mounting groove, and the main place
Reason unit (28) is connected with first induction coil (31) by conducting wire；
Second induction coil (32) can rotate relative to first induction coil (31), in second induction coil
(32) when rotation is as at the opposite position of first induction coil (31), first induction coil (31) and described second
There is preset distance between induction coil (32).
3. electric assisted bicycle axis torque sensor according to claim 1, which is characterized in that the dynamometry sleeve
(12) clearance fit between the axis (15), and the dynamometry sleeve (12) and the axis (15) are connected by key (20)
It connects.
4. electric assisted bicycle axis torque sensor according to claim 1, which is characterized in that the hollow shaft housing
(24) it is spirally connected with the axis (15) by the first screw (30), first screw (30) passes through the hollow shaft housing
(24) it and is bolted in the axis (15).
5. electric assisted bicycle axis torque sensor according to claim 1, which is characterized in that the axis conducting wire
(5) it is attached on the outer surface of the axis (15)；Or,
The axis conducting wire (5) is arranged in the 4th mounting groove (151) opened up on the outer surface of the axis (15)；Or,
The axis conducting wire (5) is arranged in the mounting hole that the axis (15) is arranged in the axial direction, and the two of the mounting hole
End is respectively communicated to the outer surface of the axis (15).
6. electric assisted bicycle axis torque sensor according to any one of claims 1 to 5, which is characterized in that also
It include: motor input shaft (22) and motor output shaft (7), the motor input shaft (22) passes through described in gear assembly drive
Motor output shaft (7) rotation；
The motor input shaft (22) is set on the axis (15), between the motor input shaft (22) and the axis (15)
Gap cooperation, the motor input shaft (22) is between the hollow shaft housing (24) and the dynamometry sleeve (12)；
The motor output shaft (7) is supported on the motor input shaft (22) by second bearing (21), the motor output
Axis (7) is sheathed on the dynamometry sleeve (12), and with dynamometry sleeve (12) clearance fit；The motor output shaft (7)
It is connect by second clutch (182) with the chain sprocket (16).
7. electric assisted bicycle axis torque sensor according to claim 6, which is characterized in that further include: sensing
Device lid (1), electric motor end cap (3), shell (6) and bearing cap (17),
One end of the sender unit cap (1) is connect with the sensor housing (27) by the second screw (33), the sensor
The one end for covering the other end of (1), one end of the electric motor end cap (3) and the shell (6) is spirally connected by third screw (2)；Institute
The other end for stating electric motor end cap (3) is sheathed on the motor input shaft (22) by 3rd bearing (4), and passes through fourth bearing
(23) it is sheathed on the hollow shaft housing (24)；One end of the other end of the shell (6) and the bearing cap (17) passes through the
Four screws (19) are spirally connected, and the shell (6) is supported on the motor input shaft (22) by 5th bearing (8)；The bearing
The other end of lid (17) is supported on the chain sprocket (16) by 6th bearing (10).
8. electric assisted bicycle axis torque sensor according to claim 7, which is characterized in that the axis (15)
On be arranged with the first check ring (14) and second spring retaining ring (29) that interference fit is formed with the axis (15), described the
One check ring (14) fits in the side of the first bearing (13) far from the dynamometry sleeve (12), the second spring gear
Circle (29) fits in the side of the hollow shaft housing (24) far from the dynamometry sleeve (12)；
The bearing snap spring (9) that interference fit is formed with the chain sprocket (16), the bearing are arranged on the chain sprocket (16)
Circlip (9) is bonded setting with the 6th bearing (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821412883.7U CN208715407U (en) | 2018-08-30 | 2018-08-30 | A kind of electric assisted bicycle axis torque sensor |
| PCT/CN2019/096473 WO2020042811A1 (en) | 2018-08-30 | 2019-07-18 | Center-shaft type torque sensor of electrically power-assisted bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821412883.7U CN208715407U (en) | 2018-08-30 | 2018-08-30 | A kind of electric assisted bicycle axis torque sensor |
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| Publication Number | Publication Date |
|---|---|
| CN208715407U true CN208715407U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821412883.7U Active CN208715407U (en) | 2018-08-30 | 2018-08-30 | A kind of electric assisted bicycle axis torque sensor |
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| WO (1) | WO2020042811A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020042811A1 (en) * | 2018-08-30 | 2020-03-05 | 重庆真有劲科技有限公司 | Center-shaft type torque sensor of electrically power-assisted bicycle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231203B (en) * | 2007-01-23 | 2011-03-30 | 朱正风 | Electric vehicle force-aid sensor using virgula supporting member deformation |
| FR3001290B1 (en) * | 2013-01-18 | 2015-03-27 | Mavic Sas | TORQUE MEASURING HUB, POWER MEASURING SYSTEM, CYCLE WHEEL EQUIPPED WITH SUCH HUB OR SYSTEM, AND MEASURING METHOD USING SUCH A HUB |
| CN103879506B (en) * | 2014-02-11 | 2016-01-20 | 苏州工业园区同盛车业有限公司 | Electrical bicycle middle shaft moment sensor |
| CN104276251B (en) * | 2014-10-31 | 2017-05-03 | 太仓市荣驰电机有限公司 | Torque sensing system for middle shaft of electric vehicle |
| CN106275226A (en) * | 2016-08-31 | 2017-01-04 | 太仓市悦博电动科技有限公司 | A kind of for bicycle or the bilateral energy meter of motive-force-assisted bicycle |
| CN208715407U (en) * | 2018-08-30 | 2019-04-09 | 重庆真有劲科技有限公司 | A kind of electric assisted bicycle axis torque sensor |
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2018
- 2018-08-30 CN CN201821412883.7U patent/CN208715407U/en active Active
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2019
- 2019-07-18 WO PCT/CN2019/096473 patent/WO2020042811A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020042811A1 (en) * | 2018-08-30 | 2020-03-05 | 重庆真有劲科技有限公司 | Center-shaft type torque sensor of electrically power-assisted bicycle |
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| Publication number | Publication date |
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| WO2020042811A1 (en) | 2020-03-05 |
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