CN109572915A - A kind of cantilever axis electric bicycle torque measuring device - Google Patents
A kind of cantilever axis electric bicycle torque measuring device Download PDFInfo
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- CN109572915A CN109572915A CN201811603235.4A CN201811603235A CN109572915A CN 109572915 A CN109572915 A CN 109572915A CN 201811603235 A CN201811603235 A CN 201811603235A CN 109572915 A CN109572915 A CN 109572915A
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of cantilever axis electric bicycle torque measuring devices, including horizontally disposed Five-way tube, horizontal axis is rotatably provided in Five-way tube, axis both ends are pierced by the both ends of Five-way tube respectively, left crank assemblies and right crankset part are respectively connected on axis both ends, vertical sprocket wheel is additionally provided on right crankset part, it further include that coaxial spaced is arranged between Five-way tube inner wall and axis integrally in the suspended wall beam casing of hollow columnar, the left end of suspended wall beam casing is connected and fixed with Five-way tube left end, axis is rotatably arranged in the inner ring of bearing vertically arranged in cantilever beam casing, the fixed setting opposite with the axial position of axis of cantilever beam casing, it further include the elastic strain sensing device being arranged on cantilever beam set.Above-mentioned apparatus is mounted in Five-way tube, and one end is fixed, and the other end is vacantly arranged, and the stress deformation by detecting cantilever beam casing converts to obtain bicyclist's output torque.The linearity is good in this way, and measurement is accurate, can regulate and control feedback data for intelligent motor.
Description
Technical field
The present invention relates to tactility apparatus technical fields, and in particular to a kind of cantilever axis electric bicycle torque measuring device.
Background technique
Common electric bicycle is adjusted the speed using handle, and this kind of electric bicycle does not meet Japan, the electronic of European Union helps
Force bike Its Relevant Technology Standards do not meet the requirement in China's electric bicycle " new national standard " for " non-motor vehicle " yet.It is existing
There is part electric bicycle using the output power for stepping on frequency or sprocket speed sensor control motor, the spy of this kind of electric bicycle
Point is that level land is ridden easily, but starts to walk and go up a slope to cause high effort for, and is not able to satisfy the power-assisted demand that bicyclist adds and subtracts power in real time.Reason
It is anti-that the electric bicycle thought to use torque sensor to be excellent, by real-time detection bicyclist is applied to the size of power on foot pedal
It answers " wish " of bicyclist, controller is according to the output power of this " wish " real-time control motor of riding.
The sensor of existing central-axis type measurement torque is mainly the following mode: first is that by detection crankpin or stepping on
The shear-deformable torque for measuring left and right two legs respectively of board shaft, such method are needed the crankpin of rotation or pedal shaft
Deformation signal by the way of contact (such as: contact slip ring) or by cordless (such as: passing through --- the transmitting of wireless signal
And optical signal or magnetoelectricity signal is isolated in reception, magnetostrictive electromagnetic induction, isolation type rotary transformer) be transferred to voluntarily
In the receiver that vehicle carriage is fixedly connected, structure is complicated for such method, reliability is lower.
In addition, notification number is the utility model patent of " CN201901236U ", a kind of Central shaft type torque sensor is disclosed,
For the sensor using there is an eccentricity between bicycle pedal central axis and torque output shaft, bicyclist's pedal force passes through sprocket crank
Bicycle middle shaft is forced in, rotates bicycle middle shaft in the hole of torque output shaft.According to bicyclist exert a force moment variations,
So that torque output shaft is generated the rotation of different angle in shaft coupling in vehicle frame, then is exported by hall measurement.The utility model
Since bicyclist's force and the angle of eccentricity change as sprocket wheel rotates, cause the linearity of measurement poor.
In addition, being also installed on the torque sensor on the sprocket wheel of location mid-shaft or on hind axle, bicyclist is ridden
Torque sprocket wheel or rear-wheel are transferred to using planetary gear construction, pass through detection planetary gear set, sun gear or outer gear ring
Interaction force measure torque.It is preferable that such method measures the linearity, but structure is complicated.
Summary of the invention
In view of the above shortcomings of the prior art, the invention discloses a kind of structure is simple, it is convenient when riding to riding
The output torque of passerby measures, and the cantilever axis electric bicycle torque measuring device that the linearity is good.
In order to solve the above technical problems, present invention employs the following technical solutions:
A kind of cantilever axis electric bicycle torque measuring device, including horizontally disposed Five-way tube can turn in Five-way tube
Dynamic is provided with horizontal axis, and axis both ends are pierced by the both ends of Five-way tube respectively, left crank is respectively connected on axis both ends
Component and right crankset part are additionally provided with vertical sprocket wheel on right crankset part, further include that coaxial spaced is arranged in Five-way tube
It is integrally in the suspended wall beam casing of hollow columnar between wall and axis, the left end of suspended wall beam casing is connected and fixed and constitutes with Five-way tube left end
Cantilever beam structure is vertically provided with bearing in cantilever beam casing, and axis is spindle rotationally arranged in the inner ring of bearing, cantilever beam casing with
The relatively fixed setting of the axial position of axis, further includes the elastic strain sensing device being arranged on cantilever beam set, answers with elasticity
Become the processor of sensing device signal connection, processor is obtained based on the elastic strain data reduction that elastic strain sensing device obtains
Torque is trampled to what bicyclist exported.
In this way, cantilever beam is set in siphunculus, cantilever beam structure is constituted.Specifically right crankset is trampled with bicyclist to close
For be illustrated, bicyclist apply pedal force F generate drive sprocket rotation torque, and then generate chain tension f make
For sprocket wheel, the resultant force T that pedal force F is combined with the tension f formation of chain effect Crank on chain wheel, resultant force T act on axis
Resultant force T is applied to the flexible deformation that cantilever beam casing right end causes cantilever beam casing by right end, axis right end.Wherein
Wherein pedal force F be in straight down, the tension f of chain along the linear part of chain backward, right crankset part
The a length of L of pedal, pedal and horizontal sextant angle are σ, sprocket radius r, and chain vertical angle isN is the dragging of chain
Torque.
Preferably, elastic strain sensing device is foil gauge, foil gauge is fitted on the outer peripheral surface of cantilever beam casing, is strained
The thickness of piece is less than the difference of Five-way tube internal diameter and cantilever beam casing outer diameter corresponding to foil gauge installation place.
In this way, strain gauge adhesion measures the electricity of cantilever beam casing degree by bending by strain bridge on cantilever beam set
Signal can must ride force data.Foil gauge is smaller simultaneously, easy for installation, occupies little space, and is adapted for mount on Five-way tube and hangs
In gap space between arm beam casing.
Preferably, cantilever beam casing outer peripheral surface annular groove positioned inwardly in a radial direction, annular groove is arranged in cantilever beam casing
Left end and right end between, foil gauge is arranged on the bottom surface of annular groove.
In this way, the corresponding wall thickness at the setting installation foil gauge of annular groove is thinner, in this way the same stress the case where
Under, deformation it is bigger, it is more convenient to accurately measure.
Preferably, the quantity of the foil gauge is two, two foil gauge resistance values are identical, and two foil gauges are separately positioned on
The both ends of the horizontal diameter of cantilever beam casing, two foil gauges are symmetrical arranged about the perpendicular for crossing cantilever beam casing axis.
In this way, the parameter of two foil gauges is identical, resistance value is R, and strain bridge is formed for the resistance of R with 2 resistance values.
Institute's stress of cantilever beam casing and suffered torsional analysis --- it is detailed in Fig. 3；By taking right crus of diaphragm as an example: setting pedal force as F, ride
Brachium is L, chain tension f, sprocket radius r, and the horizontal sextant angle of pedal is σ, and axis right part is far from the fixed position in left end
Distance be H.
Pedal force F is translatable to formation power F and rotating torque on axis axle center: N=F × L × cos σ, chain tension f can
Be moved on axis axle center and form power f and drawing torque: n=f × r, two torques are equal, and correspondence can calculate f..
The downward torque N that cantilever beam casing is formed by pedal force FF=F × H；Cantilever beam casing is formed by chain tension f
Backward directions torque nf=f × H.Two of them foil gauge respectively corresponds R1, the second foil gauge correspond to R2。
Strain bridge testing principle ---It respectively indicates: torque nf, torque NFFoil gauge deformation is caused to be produced
Raw resistance change, Δ RTIt is the resistance change that temperature change generates.
Strain bridge measures right crus of diaphragm pedal force as F, the strain signal that chain tension generates when being f:
Wherein U0To the output voltage of the strain bridge of foil gauge composition, UiIt is corresponding
Input voltage.
It can thus be appreciated that: strain bridge signal and torque n when right crus of diaphragm is foot-operatedfCause foil gauge to deform, i.e., is f with chain tension
Correlation, it is also such that similarly left foot, which is trampled,.
Preferably, it is 1mm-3mm that cantilever beam, which puts on the wall thickness opened up at annular groove,.
In this way, above-mentioned setting meets structural strength while being conducive to elastic deformation.
Preferably, foil gauge is arranged close to the left end of cantilever beam casing.
It is accurately measured in this way, being more advantageous to.
Preferably, the right end of cantilever beam casing is axially coaxially arranged with bearing mounting hole along itself to the left, bearing is vertically set
It sets in bearing mounting hole, further includes the lock sleeve being detachably connected with cantilever beam casing, lock sleeve, which has, to be protruded into cantilever beam casing
Interconnecting piece, the left end of interconnecting piece abuts with bearing side, and lock sleeve is horizontally disposed, and axis passes through lock sleeve, lock sleeve and outstanding
Arm beam casing gap setting.
In this way, the setting of lock sleeve facilitates the location and installation for realizing bearing.
Preferably, radially evagination forms the shaft shoulder for the axis position opposite with the bearing mounting hole bottom of cantilever beam casing,
Bearing is installed between the shaft shoulder of axis and the left end of interconnecting piece.
In this way, above structure can relative position between effective position bearing and axis, axial restraint axis.
Preferably, the interconnecting piece left end of lock sleeve is coaxially arranged with the counterbore extended to the right, axis is located at the portion of counterbore
Position is removably connected with locking nut, and locking nut is located in the counterbore, the left end of locking nut and the left end point of lock sleeve
It is not abutted with the inner ring and outer ring of same bearing.
In this way, aforesaid way can preferably realize that bearing limits, to realize axis axial limiting.
Preferably, the left end of cantilever beam casing includes that one section be axially arranged along cantilever beam casing is set with Five-way tube one end inner wall
The connection external screw thread for the inner bolt hole connection cooperation set, the left end of cantilever beam casing further includes radially prolonging in cantilever beam casing end
The position-arresting disk of composition is stretched, the outer diameter of position-arresting disk is greater than the externally threaded major diameter of connection, and the right side of position-arresting disk constitutes Five-way tube
End abutment face, connection external screw thread are located at the right side of position-arresting disk.
In this way, the mode being threadedly coupled facilitates installation and replacement, the convenient operation that is screwed on manually of the setting of position-arresting disk, on position-arresting disk
Five-way tube end abutment face facilitate realization connection positioning.Position-arresting disk also has the function of blocking sundries.
Preferably, the right end of lock sleeve extends radially outwardly along lock sleeve constitutes block plate, it is coaxially arranged on the left of block plate
Boss simultaneously forms two vertical step surfaces, and boss is integrally in the form of a column, and the outer diameter of boss is less than the internal diameter of the Five-way tube of bicycle,
In two step surfaces another in the step surface composition cantilever beam casing end abutment face of cantilever beam casing, two step surfaces
Spacing between terrace and the right side of position-arresting disk is greater than the length of Five-way tube.
In this way, the mode being threadedly coupled facilitates installation, the convenient hand-held installation of block plate.Block plate also has the function for blocking sundries
Energy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of cantilever axis electric bicycle torque measuring device disclosed by the invention；
Fig. 2 is cantilever beam casing, lock sleeve and foil gauge structural schematic diagram interconnected in Fig. 1；
Fig. 3 be a kind of cantilever axis electric bicycle force analysis and foil gauge mounting means disclosed by the invention signal
Figure；
Fig. 4 is strain bridge circuit diagram.
Wherein, 1 be cantilever beam casing, 101 be position-arresting disk, 102 be connection external screw thread, 103 be Five-way tube end abutment face,
104 it is annular groove, 105 be bearing mounting hole, 2 be lock sleeve, 201 be interconnecting piece, 202 be block plate, 203 be counterbore, 204 is
Cantilever beam casing end abutment face, 3 be foil gauge, 4 be Five-way tube, 5 be axis, 6 be the combination of left crank, 7 be right crankset close, 8
It is locking nut for sprocket wheel, 9.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description explanation of one step.
Fig. 1 is a kind of cantilever axis electric bicycle torque measuring device disclosed by the invention referring to FIG. 1 to FIG. 4,
Structural schematic diagram, Fig. 2 be Fig. 1 in cantilever beam casing, lock sleeve and foil gauge structural schematic diagram interconnected, Fig. 3 be this hair
A kind of bright disclosed cantilever axis electric bicycle force analysis and foil gauge mounting means schematic diagram, Fig. 4 are strain bridge circuit
Schematic diagram.
The invention discloses a kind of cantilever axis electric bicycle torque measuring device, including horizontally disposed Five-way tube,
Rotatably it is provided with horizontal axis in Five-way tube, axis both ends are pierced by the both ends of Five-way tube respectively, on axis both ends respectively
Left crank assemblies and right crankset part are connected with, vertical sprocket wheel is additionally provided on right crankset part, further include that coaxial spaced is set
It sets integrally in the suspended wall beam casing of hollow columnar between Five-way tube inner wall and axis, the left end and Five-way tube left end of suspended wall beam casing connect
It connects fixed and constitutes cantilever beam structure, bearing is vertically provided in cantilever beam casing, axis is spindle rotationally arranged in the inner ring of bearing
In, the fixed setting opposite with the axial position of axis of cantilever beam casing further includes the elastic strain sensing being arranged on cantilever beam set
Device, the processor being connect with elastic strain sensing device signal, the elasticity that processor is obtained based on elastic strain sensing device
What strain data converted to obtain bicyclist's output tramples torque.
In this way, cantilever beam is set in siphunculus, cantilever beam structure is constituted.Specifically right crankset is trampled with bicyclist to close
For be illustrated, bicyclist apply pedal force F generate drive sprocket rotation torque, and then generate chain tension f make
For sprocket wheel, the resultant force T that pedal force F is combined with the tension f formation of chain effect Crank on chain wheel, resultant force T act on axis
Resultant force T is applied to the flexible deformation that cantilever beam casing right end causes cantilever beam casing by right end, axis right end.Wherein
Wherein pedal force F be in straight down, the tension f of chain along the linear part of chain backward, right crankset part
The a length of L of pedal, pedal and horizontal sextant angle are σ, sprocket radius r, and chain vertical angle isN is the dragging of chain
Torque.
In the present embodiment, elastic strain sensing device is foil gauge, and foil gauge is fitted on the outer peripheral surface of cantilever beam casing,
The thickness of foil gauge is less than the difference of Five-way tube internal diameter and cantilever beam casing outer diameter corresponding to foil gauge installation place.
In this way, strain gauge adhesion measures the electricity of cantilever beam casing degree by bending by strain bridge on cantilever beam set
Signal can must ride force data.Foil gauge is smaller simultaneously, easy for installation, occupies little space, and is adapted for mount on Five-way tube and hangs
In gap space between arm beam casing.
In the present embodiment, cantilever beam casing outer peripheral surface annular groove positioned inwardly in a radial direction, annular groove are arranged in cantilever
Between the left end and right end of beam casing, foil gauge is arranged on the bottom surface of annular groove.
In this way, the corresponding wall thickness at the setting installation foil gauge of annular groove is thinner, in this way the same stress the case where
Under, deformation it is bigger, it is more convenient to accurately measure.
In the present embodiment, the quantity of the foil gauge is two, and two foil gauge resistance values are identical, and two foil gauges are set respectively
It sets at the both ends of the horizontal diameter of cantilever beam casing, two foil gauges are symmetrical arranged about the perpendicular for crossing cantilever beam casing axis.
In this way, the parameter of two foil gauges is identical, resistance value is R, and strain bridge is formed for the resistance of R with 2 resistance values.
Institute's stress of cantilever beam casing and suffered torsional analysis --- it is detailed in Fig. 3；By taking right crus of diaphragm as an example: setting pedal force as F, ride
Brachium is L, chain tension f, sprocket radius r, and the horizontal sextant angle of pedal is σ, and axis right part is far from the fixed position in left end
Distance be H.
Pedal force F is translatable to formation power F and rotating torque on axis axle center: N=F × L × cos σ, chain tension f can
Be moved on axis axle center and form power f and drawing torque: n=f × r, two torques are equal, and correspondence can calculate f..
The downward torque N that cantilever beam casing is formed by pedal force FF=F × H；Cantilever beam casing is formed by chain tension f
Backward directions torque nf=f × H.Two of them foil gauge respectively corresponds R1, the second foil gauge correspond to R2。
Strain bridge testing principle ---It respectively indicates: torque nf, torque NFFoil gauge deformation is caused to be produced
Raw resistance change, Δ RTIt is the resistance change that temperature change generates.
Strain bridge measures right crus of diaphragm pedal force as F, the strain signal that chain tension generates when being f:
Wherein U0To the output voltage of the strain bridge of foil gauge composition, UiIt is corresponding
Input voltage.
It can thus be appreciated that: strain bridge signal and torque n when right crus of diaphragm is foot-operatedfCause foil gauge to deform, i.e., is f with chain tension
Correlation, it is also such that similarly left foot, which is trampled,.
In the present embodiment, it is 1mm-3mm that cantilever beam, which puts on the wall thickness opened up at annular groove,.
In this way, above-mentioned setting meets structural strength while being conducive to elastic deformation.
In the present embodiment, foil gauge is arranged close to the left end of cantilever beam casing.
It is accurately measured in this way, being more advantageous to.
In the present embodiment, for the right end of cantilever beam casing along bearing mounting hole itself is axially coaxially arranged with to the left, bearing is perpendicular
It further include the lock sleeve being detachably connected with cantilever beam casing to being arranged in bearing mounting hole, lock sleeve, which has, protrudes into cantilever beam
The left end of interconnecting piece in set, interconnecting piece is abutted with bearing side, and lock sleeve is horizontally disposed, and axis passes through lock sleeve, lock sleeve
Gap setting is covered with cantilever beam.
In this way, the setting of lock sleeve facilitates the location and installation for realizing bearing.
In the present embodiment, radially evagination forms axis for the axis position opposite with the bearing mounting hole bottom of cantilever beam casing
Shoulder, bearing are installed between the shaft shoulder of axis and the left end of interconnecting piece.
In this way, above structure can relative position between effective position bearing and axis, axial restraint axis.
In the present embodiment, the interconnecting piece left end of lock sleeve is coaxially arranged with the counterbore extended to the right, and axis is located at counterbore
Position be removably connected with locking nut, locking nut is located in the counterbore, the left end of locking nut and a left side for lock sleeve
End is abutted with the inner ring and outer ring of same bearing respectively.
In this way, aforesaid way can preferably realize that bearing limits, to realize axis axial limiting.
In the present embodiment, the left end of cantilever beam casing includes in one section be axially arranged along cantilever beam casing and Five-way tube one end
Wall setting inner bolt hole connection cooperation connection external screw thread, the left end of cantilever beam casing further include cantilever beam casing end radially to
Outer to extend the position-arresting disk constituted, the outer diameter of position-arresting disk is greater than the externally threaded major diameter of connection, and the right side of position-arresting disk constitutes five
Siphunculus end abutment face, connection external screw thread are located at the right side of position-arresting disk.
In this way, the mode being threadedly coupled facilitates installation and replacement, the convenient operation that is screwed on manually of the setting of position-arresting disk, on position-arresting disk
Five-way tube end abutment face facilitate realization connection positioning.Position-arresting disk also has the function of blocking sundries.
In the present embodiment, the right end of lock sleeve extends radially outwardly along lock sleeve constitutes block plate, coaxially sets on the left of block plate
It is equipped with boss and forms two vertical step surfaces, boss is integrally in the form of a column, and the outer diameter of boss is less than the Five-way tube of bicycle
Internal diameter constitutes cantilever beam casing end abutment face close to a step surface of cantilever beam casing in two step surfaces, in two step surfaces
Spacing between another step surface and the right side of position-arresting disk is greater than the length of Five-way tube.
In this way, the mode being threadedly coupled facilitates installation, the convenient hand-held installation of block plate.Block plate also has the function for blocking sundries
Energy.
Claims (10)
1. a kind of cantilever axis electric bicycle torque measuring device, including horizontally disposed Five-way tube, can be rotated in Five-way tube
Be provided with horizontal axis, axis both ends are pierced by the both ends of Five-way tube respectively, left crank group are respectively connected on axis both ends
Part and right crankset part are additionally provided with vertical sprocket wheel on right crankset part, which is characterized in that further include that coaxial spaced setting exists
It is integrally in the suspended wall beam casing of hollow columnar between Five-way tube inner wall and axis, the left end of suspended wall beam casing connect solid with Five-way tube left end
Determine and constitute cantilever beam structure, bearing is vertically provided in cantilever beam casing, axis is spindle rotationally arranged in the inner ring of bearing, is hanged
The fixed setting opposite with the axial position of axis of arm beam casing, further includes the elastic strain sensing device being arranged on cantilever beam set,
The processor being connect with elastic strain sensing device signal, the elastic strain number that processor is obtained based on elastic strain sensing device
According to conversion obtain bicyclist output trample torque.
2. cantilever axis electric bicycle torque measuring device as described in claim 1, which is characterized in that elastic strain sensing
Device is foil gauge, and foil gauge is fitted on the outer peripheral surface of cantilever beam casing, and the thickness of foil gauge is less than foil gauge and installs place pair
The difference of the Five-way tube internal diameter and cantilever beam casing outer diameter answered.
3. cantilever axis electric bicycle torque measuring device as claimed in claim 2, which is characterized in that cantilever beam casing periphery
Face annular groove positioned inwardly in a radial direction, annular groove are arranged between the left end and right end of cantilever beam casing, and foil gauge setting exists
On the bottom surface of annular groove.
4. cantilever axis electric bicycle torque measuring device as claimed in claim 3, which is characterized in that the foil gauge
Quantity is two, and two foil gauge resistance values are identical, and two foil gauges are separately positioned on the both ends of the horizontal diameter of cantilever beam casing, two
Foil gauge is symmetrical arranged about the perpendicular for crossing cantilever beam casing axis.
5. cantilever axis electric bicycle torque measuring device as described in claim 3 or 4, which is characterized in that foil gauge leans on
The left end setting of nearly cantilever beam casing.
6. cantilever axis electric bicycle torque measuring device as described in claim 1, which is characterized in that the right side of cantilever beam casing
End is axially coaxially arranged with bearing mounting hole along itself to the left, and bearing is vertically provided in bearing mounting hole, further includes and cantilever
The lock sleeve that beam casing is detachably connected, lock sleeve have the interconnecting piece protruded into cantilever beam casing, the left end of interconnecting piece and bearing one
Side abuts, and lock sleeve is horizontally disposed, and axis passes through lock sleeve, and lock sleeve and cantilever beam cover gap setting.
7. cantilever axis electric bicycle torque measuring device as claimed in claim 6, which is characterized in that axis and cantilever beam
Radially evagination forms the shaft shoulder to the opposite position in the bearing mounting hole bottom of set, and bearing is installed in the shaft shoulder and the connection of axis
Between the left end in portion.
8. cantilever axis electric bicycle torque measuring device as claimed in claim 7, which is characterized in that the connection of lock sleeve
Portion left end is coaxially arranged with the counterbore extended to the right, and the position that axis is located at counterbore is removably connected with locking nut, locking screw
Mother is located in the counterbore, and the left end of locking nut is abutted with the inner ring and outer ring of same bearing respectively with the left end of lock sleeve.
9. cantilever axis electric bicycle torque measuring device as claimed in claim 6, which is characterized in that a left side for cantilever beam casing
End includes that one section be axially arranged along cantilever beam casing connect spiral shell outside the connection of cooperation with the inner bolt hole of Five-way tube one end inner wall setting
Line, the left end of cantilever beam casing further include extending radially outward the position-arresting disk of composition, the outer diameter of position-arresting disk in cantilever beam casing end
Greater than the externally threaded major diameter of connection, the right side of position-arresting disk constitutes Five-way tube end abutment face, and connection external screw thread is located at limit
The right side of position disk.
10. cantilever axis electric bicycle torque measuring device as claimed in claim 9, which is characterized in that the right side of lock sleeve
End extends radially outwardly along lock sleeve constitutes block plate, and boss is coaxially arranged on the left of block plate and forms two vertical step surfaces,
Boss is integrally in the form of a column, and the outer diameter of boss is less than the internal diameter of the Five-way tube of bicycle, close cantilever beam casing in two step surfaces
One step surface constitutes cantilever beam casing end abutment face, in two step surfaces between another step surface and the right side of position-arresting disk
Spacing is greater than the length of Five-way tube.
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|---|---|---|---|
| CN201811603235.4A CN109572915A (en) | 2018-12-26 | 2018-12-26 | A kind of cantilever axis electric bicycle torque measuring device |
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|---|---|---|---|
| CN201811603235.4A CN109572915A (en) | 2018-12-26 | 2018-12-26 | A kind of cantilever axis electric bicycle torque measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182296A (en) * | 2019-06-28 | 2019-08-30 | 上海云驱智能科技有限公司 | A kind of bicycle middle shaft moment measuring device |
| ES2875174A1 (en) * | 2020-05-05 | 2021-11-08 | Bikone Bearings S L | FORCE SENSOR FOR BICYCLE PEDALIER (Machine-translation by Google Translate, not legally binding) |
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| CN105848921A (en) * | 2013-08-26 | 2016-08-10 | 泰欧德·皮勒 | Wheel hub transmission unit for a drive wheel of a vehicle, drive wheel and vehicle with auxiliary drive |
| CN104044682A (en) * | 2014-06-12 | 2014-09-17 | 苏州达方电子有限公司 | Revolving shaft mechanism |
| CN105711727A (en) * | 2016-04-19 | 2016-06-29 | 钟德斌 | Bicycle assisting force system adopting middle-axis torque sensor |
| CN207141297U (en) * | 2017-08-03 | 2018-03-27 | 爱克玛电器（苏州）有限公司 | Electric bicycle torque sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110182296A (en) * | 2019-06-28 | 2019-08-30 | 上海云驱智能科技有限公司 | A kind of bicycle middle shaft moment measuring device |
| ES2875174A1 (en) * | 2020-05-05 | 2021-11-08 | Bikone Bearings S L | FORCE SENSOR FOR BICYCLE PEDALIER (Machine-translation by Google Translate, not legally binding) |
| WO2021224520A1 (en) * | 2020-05-05 | 2021-11-11 | Bikone Bearings, S.L. | Force sensor for the bottom bracket of a bicycle |
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Application publication date: 20190405 |