CN209513114U - A kind of five logical torque sensors of bicycle - Google Patents
A kind of five logical torque sensors of bicycle Download PDFInfo
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- CN209513114U CN209513114U CN201920437337.7U CN201920437337U CN209513114U CN 209513114 U CN209513114 U CN 209513114U CN 201920437337 U CN201920437337 U CN 201920437337U CN 209513114 U CN209513114 U CN 209513114U
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- power transmission
- transmission arm
- foil gauge
- ring body
- logical
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Abstract
The utility model discloses a kind of five logical torque sensors of bicycle, including connecting ring body, the outside integration of the connection ring body is connected with power transmission arm, and the side of the power transmission arm is sticked and has foil gauge, and the end of the power transmission arm is fixedly installed hard hemisphere close to the side of the foil gauge；The utility model has the advantages of simple structure, which is converted to the torque that sun wheel assembly is born the moment of flexure of static power transmission arm, and the medium position of foil gauge joint place forms narrow section of part；Narrow section of the part can form relatively large dependent variable, and then strain measurement precision can be improved.
Description
Technical field
The utility model belongs to moped field.
Background technique
The change piece needs of the survey torsion of existing moped are mounted on always on the axis of rotation, slip ring,
Brush connection connection type be easy to happen poor contact, signal transmission it is unstable, and the axis of rotation status have always from
Mental and physical efforts add bumpy sections, and foil gauge is easy to happen loosening, and obscission in turn results in the inaccurate phenomenon of dynamometry.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, it is five logical to provide a kind of bicycle for the utility model
Torque sensor.
Technical solution: to achieve the above object, a kind of five logical torque sensors of bicycle of the utility model, including even
Ring body is connect, the outside integration of the connection ring body is connected with power transmission arm, and the side of the power transmission arm is sticked and has foil gauge, described
The end of power transmission arm is fixedly installed hard hemisphere close to the side of the foil gauge.
Further, there is boss in the end of the power transmission arm far from the side integrated setting of the foil gauge.
Further, the power transmission arm is in long rectangular configuration, and the length extension line of the power transmission arm passes through the connection
The center of circle of ring body.
Further, circumferentially array is evenly equipped with several flange holes in the connection ring body.
Further, the foil gauge is located at the power transmission arm medium position, and the power transmission arm is far from the foil gauge one
Side is provided with rectangle short slot, and the rectangle short slot is located at the medium position of the joint place of the foil gauge, makes foil gauge joint place
Medium position formed part narrow section.
The utility model has the advantages that the utility model has the advantages of simple structure, the torque axis which is born sun wheel assembly
It is melted into the moment of flexure of static power transmission arm, the medium position of foil gauge joint place forms narrow section of part；Narrow section of the part can form opposite
Biggish dependent variable, and then strain measurement precision can be improved.
Detailed description of the invention
Attached drawing 1 is the whole assembly of this five logical transmission system；
Attached drawing 2 is the disassembly schematic diagram of five logical transmission systems；
Attached drawing 3 is planetary gear train perspective view of the explosion；
Attached drawing 4 is torque sensor structural schematic diagram；
Attached drawing 5 is the inside partial schematic diagram for not placing the bicycle bottom bracket cabinet of torque sensor；
Attached drawing 6 is the schematic diagram that torque sensor structure is placed on the basis of attached drawing 5.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
A kind of five logical torque sensors of bicycle as shown in Figure 4, including connection ring body 9.7, the connection ring body 9.7
Outside integration be connected with power transmission arm 9.5, the side of the power transmission arm 9.5, which is sticked, foil gauge 9.4, and power transmission arm 9.5 is by curved
Square causes the bridge resistance of foil gauge 9.4 to change after generating micro-strain, and the change transitions of strain bridge resistance are electric signal
Variation to realizing torgue measurement；The end of the power transmission arm 9.5 is fixedly installed firmly close to the side of the foil gauge 9.4
Matter hemisphere 9.2；There is boss 9.1 in the end of the power transmission arm 9.5 far from the side integrated setting of the foil gauge 9.4；Institute
Power transmission arm 9.5 is stated in long rectangular configuration, and the length extension line of the power transmission arm 9.5 is by the center of circle for connecting ring body 9.7；
Circumferentially array is evenly equipped with several flange holes 96 in the connection ring body 9.7；The foil gauge 9.4 is located at the power transmission arm 9.5
Medium position, the power transmission arm 9.5 are provided with rectangle short slot 9.3, the rectangle short slot 9.3 far from 9.4 side of foil gauge
Medium position positioned at the joint place of the foil gauge 9.4 makes the medium position of 9.4 joint place of foil gauge form narrow section of part
093；The part can form relatively large dependent variable for narrow section 093, and then 9.4 detection accuracy of foil gauge can be improved；Torque passes
The torque that sun wheel assembly 10 is born is converted to the moment of flexure of static power transmission arm 9.5 by sensor 9, and then foil gauge 9.4 passes through inspection
The upper dependent variable for surveying power transmission arm 9.5 can be held by the moment of flexure that power transmission arm 9.5 is born to extrapolate sun wheel assembly 10
The torque received, and then the pedal force size for determining user
In order to preferably illustrate the technological progress and usage mode of this sensor, the present embodiment will combine moped
Five logical transmissions survey square total system to be described in detail:
Electric bicycle survey square system as shown in attached drawing 1 to 6 based on strain-ga(u)ge transducer, including five logical main shafts 11,
Sun wheel assembly 10, gear ring component 13 and planet carrier component 12；The sun wheel assembly 10, gear ring component 13 and planet carrier component
12 combination constitutes the planetary gear train centered on sun wheel assembly 10；Planetary gear train has compact-sized, can reduce by five logical knots
The axial dimension of structure；But also with small in size, quality is small, transmitting power bracket is big, running noises are small, the high-efficient and service life is long
The advantages that；Planetary carrier 12.3 on the embodiment of the present invention planet carrier component 12 by click 23 or unilateral bearing with
The five logical main shaft 11 is sequentially connected；Logical 11 both ends of main shaft of the five of the present embodiment are for connection to foot-operated crankshaft, work as bicycle
When user drives five logical main shafts 11 of bicycle to invert with pedal, which makes five logical main shafts 11 and planetary carrier
12.3 mutually disengage, which effectively prevent the reverse rotation of five logical main shafts 11 to affect planetary carrier 12.3；
It further include the torque sensor 9 being fixedly mounted, the sun wheel assembly 10 and the fixed company of the torque sensor 9
It connects, the torque sensor 9 can detect the torque that sun wheel assembly 10 is born, and sun wheel assembly 10 is the center of planetary gear train
Component, several planetary gears 12.2 of the torque suffered by the sun wheel assembly 10 from circumferentially uniform array, and then the sun
The moment of torsion that wheel assembly 10 is born is more steady for other positions, not the interference of bending moment force, detects the torque of the position
It is more accurate；The sun wheel assembly 10 of the present embodiment includes that the mutual concentric sun gear 10.2 being fixedly connected and sensor are fixed
Disk 10.3；The sun gear 10.2 is intermeshed with each planetary gear 12.2, the inner ring of the sun gear 10.2 and described five
Logical 11 outer wall clearance fit of main shaft；The torque sensor 9 is detachably fixed installation with the sensor fixing plate 10.3.
The torque sensor 9 includes connection ring body 9.7, in the connection ring body 9.7 circumferentially array be evenly equipped with it is several
Flange hole 96, several flange holes 96 are locked at the lock of 10.3 end of sensor fixing plate by several flange clamping screws 8
On tieholen 10.1；Realize the fixation to sun wheel assembly 10.
The outside integration of the connection ring body 9.7 is connected with the power transmission arm 9.5 of long rectangle, the length of the power transmission arm 9.5
The center of circle of the extension line by the connection ring body 9.7 is spent, the middle part side of the power transmission arm 9.5 is sticked and has foil gauge 9.4；Torque
The torque that sun wheel assembly 10 is born is converted to the moment of flexure of static power transmission arm 9.5 by sensor 9, and then foil gauge 9.4 passes through
The upper dependent variable of detection power transmission arm 9.5 can extrapolate 10 institute of sun wheel assembly by the moment of flexure that power transmission arm 9.5 is born
The torque of receiving；
The end of the power transmission arm 9.5 of the present embodiment is fixedly installed hemisphere 9.2 close to the side of the foil gauge 9.4,
The hemisphere 9.2 of the present embodiment is hard alloy material, and the end of the power transmission arm 9.5 is far from the side of the foil gauge 9.4
Integrated setting has boss 9.1；The power transmission arm 9.5 is provided with rectangle short slot 9.3 far from 9.4 side of foil gauge, described
Rectangle short slot 9.3 is located at the medium position of the joint place of the foil gauge 9.4, makes the medium position shape of 9.4 joint place of foil gauge
At narrow section 093 local；The part can form relatively large dependent variable for narrow section 093, and then foil gauge 9.4 can be improved and detect essence
Degree；
It further include bicycle bottom bracket cabinet 2 and housing plate 14；The housing plate 14 passes through several end cap clamping screws
17 are locked on the mould assembling end face of the bicycle bottom bracket cabinet 2；And the bicycle bottom bracket cabinet 2 and housing plate of the present embodiment
Gasket seal 5 is provided between 14；The combination of the bicycle bottom bracket cabinet 2 and housing plate 14, which is constituted, closes body structure；Five
Logical main shaft 11, sun wheel assembly 10, gear ring component 13, planet carrier component 12 and torque sensor 9 are respectively positioned on the mould assembling body
The inside of structure；One end of the five logical main shaft 11 is rotatablely connected the axis on the bicycle bottom bracket cabinet 2 by first bearing 3
Bearing bore 4；The inside of the bicycle bottom bracket cabinet 2 is provided with circular connection ring body accommodation groove 22, the connection ring body accommodating
The internal diameter of slot 22 and the concentric setting of the bearing hole 4, the connection ring body accommodation groove 22 is greater than outside the connection ring body 9.7
Diameter；The inside of the bicycle bottom bracket cabinet 2 is additionally provided with rectangular-shaped power transmission arm accommodation groove 18, the power transmission arm accommodation groove 18
One end be connected to the ring body accommodation groove 22；The arm that the groove width of the power transmission arm accommodation groove 18 is greater than the power transmission arm 9.5 is wide；Institute
Stating power transmission arm accommodation groove 18, integrated setting has the first hard boss 21 respectively far from 22 one end two sidewalls of ring body accommodation groove
With the second hard boss 020；The flexible rubber pad 20 of fixed bonding on the second hard boss 020；The connection ring body 9.7
It is respectively placed in the ring body accommodation groove 22 and power transmission arm accommodation groove 18 with power transmission arm 9.5, the boss on the power transmission arm 9.5
9.1 elasticity press against on the resilient rubbber cushion 20, the end face of the spherical surface of the hemisphere 9.2 and the first hard boss 21
Rigid contact；Resilient pressing force on the resilient rubbber cushion 20 makes the spherical surface of hemisphere 9.2 and the end face of the first hard boss 21
Always it is in the state of rigid contact；The position that the spherical surface of the hemisphere 9.2 is contacted with the end face of the first hard boss 21 is to pass
The stress point of 9.5 end of the arm of force, the stress point are point contacts, and the position precision of stress point is high, and then makes the moment of power transmission arm 9.5
Length is in steady state always, improves torque detection accuracy.
The right end outer ring of the planetary carrier 12.3 passes through the left end inner ring of 6th bearing 28 and the external gear 13.4
Rotation connection；The right end inner ring of the external gear 13.4 is rotatablely connected by 7th bearing 30 and described five logical main shafts 11, described
The right end outer ring of external gear 13.4 is rotatablely connected the bearing hole on the housing plate 14 by 8th bearing 27.
The gear ring component 13 includes the concentric ring gear cylinder 13.2 and external gear 13.4 being fixedly connected；The internal tooth
The inner ring of circle cylinder 13.2 is provided with ring gear 13.1, the ring gear 13.1 and several planets on the planet carrier component 12
12.2 engagement connection of wheel；It further include motor, the output gear transmission engagement of the motor connects the external gear 13.4.
Side of the external gear 13.4 far from the ring gear cylinder 13.2 is concentric to be fixedly connected with external splines cylinder
13.3；It further include endless chain transmission for bicycle component 16, the spline inner ring of the external splines cylinder 13.3 and the endless chain transmission for bicycle component 16
16.1 are cooperated by spline drived；The planet carrier component 12 of the present embodiment includes planetary carrier 12.3 and several planetary gears
12.2, several planetary gears 12.2 are rotatably installed on planetary carrier 12.3, and several planetary gears 12.2 are along row
12.3 axis of star-wheel bracket circumferentially array distribution.
In addition 9.7 inner ring of connection ring body of the torque sensor 9 of the present embodiment passes through second bearing 24 and described five logical masters
Axis 11 is rotatablely connected；The inner ring of the sensor fixing plate 10.3 is connected by 3rd bearing 25 and the described five logical rotations of main shaft 11
It connects；The inner ring left end of the planetary carrier 12.3 passes through the outer ring rotating of fourth bearing 31 and the sensor fixing plate 10.3
Connection；The inner ring right end of the planetary carrier 12.3 is sequentially connected by the click 23 and described five logical main shafts 11；
The left side of the click 23, which also rotates, is provided with 5th bearing 26；
Fixing sleeve is gone back on the five logical main shaft 11 and is connected to Hall magnetic steel ring 29, and Hall magnetic steel ring 29 is with described five logical main shafts 11
Synchronous rotary, and the Hall magnetic steel ring 29 folder is between 24 inner ring of the first bearing 3 and second bearing；The connection ring
The left end of body 9.7 is fixedly installed with Hall sensor 7；The Hall magnetic steel ring 29 is corresponded to each other with the Hall sensor 7；Its
Principle be Hall magnetic steel ring 29 for each revolution, surrounding magnetic field just changes twice, and then the Hall voltage in Hall sensor 7 is just
Same frequency corresponding change, output potential are amplified by amplifying circuit, and then can measure rotating mechanism by counting circuit
Revolving speed；When bicycle is in the very fast state of descending uniform velocity, Hall sensor 7 can recognize that the revolving speed of axis is too fast, Jin Erke
To stop the power-assisted state of motor, bicycle overspeed is effectively prevented.
The specific transmission process of this programme are as follows:
User drives five logical main shafts 11 to rotate with pedal, and the rotation of five logical main shafts 11 at this time drives row by click 23
Star-wheel bracket 12.3 is whole along five logical 11 axis of main shaft rotations, under the transmission of planetary gear train, ring gear cylinder 13.2 and external tooth
After wheel 13.4 starts to rotate, and then endless chain transmission for bicycle component 16 is driven to rotate, and then chain wheel component 16 is driven by driving chain
Wheel rotation；Sun gear 10.2 is static always in above-mentioned transmission process, and the torque that sun gear 10.2 is suffered at this time
From in several planetary gears 12.2 of circumferentially uniform array；The pedal force of torque and user that sun gear 10.2 is born is big
It is small to be positively correlated, and then torque suffered by sun gear 10.2 can be used to determine the pedal force of user, and torque sensor 9 is by the sun
The torque that wheel assembly 10 is born is converted to the moment of flexure of static power transmission arm 9.5, and then foil gauge 9.4 passes through detection power transmission arm 9.5
Upper dependent variable can extrapolate the torque that sun wheel assembly 10 is born by the moment of flexure that power transmission arm 9.5 is born, into
And it is used to determine the pedal force size of user, in order to imitate the power-assisted effect of bicycle, when torque sensor 9 detects pedal force
When larger, illustrate that user in the pedal for firmly stepping on bicycle, illustrates to need to accelerate, control motor at this time and improve output power, make
The output gear of motor passes to the power increase of external gear 13.4, and then plays the power-assisted effect of bicycle.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of logical torque sensor of the five of bicycle, it is characterised in that: including connecting ring body (9.7), the connection ring body
(9.7) outside integration is connected with power transmission arm (9.5), and the side of the power transmission arm (9.5) is sticked and has foil gauge (9.4), institute
The end for stating power transmission arm (9.5) is fixedly installed hard hemisphere (9.2) close to the side of the foil gauge (9.4).
2. a kind of five logical torque sensors of bicycle according to claim 1, it is characterised in that: the power transmission arm
(9.5) end has boss (9.1) far from the side integrated setting of the foil gauge (9.4).
3. a kind of five logical torque sensors of bicycle according to claim 1, it is characterised in that: the power transmission arm
It (9.5) is in long rectangular configuration, and the length extension line of the power transmission arm (9.5) is by the center of circle of connection ring body (9.7).
4. a kind of five logical torque sensors of bicycle according to claim 1, it is characterised in that: the connection ring body
(9.7) circumferentially array is evenly equipped with several flange holes (96) on.
5. a kind of five logical torque sensors of bicycle according to claim 1, it is characterised in that: the foil gauge
(9.4) it is located at power transmission arm (9.5) medium position, the power transmission arm (9.5) is provided with far from the foil gauge (9.4) side
Rectangle short slot (9.3), the rectangle short slot (9.3) are located at the medium position of the joint place of the foil gauge (9.4), make foil gauge
(9.4) medium position of joint place forms narrow section (093) in part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437337.7U CN209513114U (en) | 2019-04-02 | 2019-04-02 | A kind of five logical torque sensors of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920437337.7U CN209513114U (en) | 2019-04-02 | 2019-04-02 | A kind of five logical torque sensors of bicycle |
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| Publication Number | Publication Date |
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| CN209513114U true CN209513114U (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920437337.7U Active CN209513114U (en) | 2019-04-02 | 2019-04-02 | A kind of five logical torque sensors of bicycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798151A (en) * | 2021-01-26 | 2021-05-14 | 松诺盟科技有限公司 | Torque sensor arm structure and torque sensor |
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2019
- 2019-04-02 CN CN201920437337.7U patent/CN209513114U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798151A (en) * | 2021-01-26 | 2021-05-14 | 松诺盟科技有限公司 | Torque sensor arm structure and torque sensor |
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