CN115123439B - Staggered shaft middle motor of booster bicycle - Google Patents
Staggered shaft middle motor of booster bicycle Download PDFInfo
- Publication number
- CN115123439B CN115123439B CN202210841499.3A CN202210841499A CN115123439B CN 115123439 B CN115123439 B CN 115123439B CN 202210841499 A CN202210841499 A CN 202210841499A CN 115123439 B CN115123439 B CN 115123439B
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- motor
- torque
- bevel gear
- shaft
- transmission sleeve
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- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000008034 disappearance Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
- B62J45/411—Torque sensors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a staggered shaft middle motor of a power-assisted bicycle, which comprises five-way pipes of the power-assisted bicycle, wherein the five-way pipes comprise a lower pipe and a middle shaft; the motor is arranged on the lower pipe, and the axis of the motor is consistent with the length direction of the lower pipe; the device also comprises a drive bevel gear, a driven bevel gear, a torque transmission sleeve, an output dental tray and a torque sensor; the output end of the motor is connected with the drive bevel gear through the coaxial transmission of the planetary gear train, and the drive bevel gear finally transmits the torque from the output end of the motor to the output tooth disc through the meshed driven bevel gear, so that a series of pain points in the transmission process are solved.
Description
Technical Field
The invention belongs to the field of booster bicycles.
Background
The existing booster bicycle adopts a scheme that a centrally-mounted motor with parallel shafts is relatively convex in appearance, the whole bicycle is not attractive, if a motor axis is designed to be parallel to a lower pipe of a five-way structure, then a planetary gear and bevel gear combined structure is used, so that the motor is attractive in appearance, can be completely combined with the lower pipe, and is made into a hidden effect; the scheme is a motor transmission structure designed based on the effect of hiding the motor, and solves a series of pain points in the transmission process;
it should be noted that this background is only for better illustrating the technical progress of this solution, and does not represent that all matters of this background are prior art.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a staggered shaft middle motor of a power-assisted bicycle.
The technical scheme is as follows: in order to achieve the above purpose, the staggered shaft middle motor of the power-assisted bicycle comprises five-way pipes of the power-assisted bicycle, wherein the five-way pipes comprise a lower pipe and a middle shaft; the motor is arranged on the lower pipe, and the axis of the motor is consistent with the length direction of the lower pipe;
the device also comprises a drive bevel gear, a driven bevel gear, a torque transmission sleeve, an output dental tray and a torque sensor; the output end of the motor is connected with a drive bevel gear in a coaxial transmission way through a planetary gear train, and the drive bevel gear finally transmits torque from the output end of the motor to an output tooth disc through a meshed driven bevel gear;
the center shaft is synchronously connected with the torque transmission sleeve through the center of the torque sensor, and the torque sensor can detect the torque transmitted to the torque transmission sleeve by the center shaft in real time; the torque transmission sleeve transmits the torque from the central shaft to the output dental tray.
Further, the planetary gear train consists of a sun gear, a planetary carrier, a planetary wheel and an inner gear ring; the planet carrier is a fixing piece; the output shaft of the motor is synchronously connected with the sun gear through the coaxial center.
Optionally, the inner gear ring is fixedly connected with the coaxial center of the drive bevel gear; the torque transmission sleeve is fixedly connected with the output dental disc in a coaxial way; the driven bevel gear is in coaxial transmission fit with the torque transmission sleeve through the A overrunning clutch.
When the middle shaft is driven by manpower, the torque sensor transmits the detected torque signal to the controller, so that the controller starts the motor, and the torque transmission sleeve simultaneously transmits the torque from the manpower and the motor to the output dental tray;
when the manual power stops, the moment sensor detects that the forward torque and the forward stepping frequency signal on the central shaft disappear, and at the moment, the inertia force of the motor is applied to the moment sensor to generate a reverse moment, and the moment sensor sends a reverse signal to the controller, so that the controller reversely energizes the motor, and a reverse electromagnetic force opposite to the rotating direction is applied to the movement rotor in the motor, so that the movement rotor in the motor is restrained from continuously rotating due to inertia.
Optionally, the inner gear ring is in coaxial transmission fit with the drive bevel gear through the B overrunning clutch; one end of the driven bevel gear is coaxially and fixedly connected with the output toothed disc; the torque transmission sleeve is in coaxial transmission fit with the driven bevel gear through the C overrunning clutch.
When the middle shaft is driven by manpower, the torque sensor transmits the detected torque signal to the controller, so that the controller starts the motor, and the driven bevel gear simultaneously transmits the torque from the manpower and the motor to the output dental tray; once the torque sensor detects that the torque on the middle shaft disappears, the torque sensor sends a signal of torque disappearance to the controller, and the controller controls the motor to be directly powered off.
Optionally, the inner gear ring is fixedly connected with the coaxial center of the drive bevel gear; the tooth disc is coaxially connected with a tooth disc transmission sleeve; the driven bevel gear is in coaxial transmission fit with the tooth disc transmission sleeve through the D overrunning clutch; the torque transmission sleeve is in coaxial transmission fit with the tooth disc transmission sleeve through the E overrunning clutch;
when the middle shaft is driven by manpower, the torque sensor transmits the detected torque signal to the controller, so that the controller starts the motor, and the tooth disc transmission sleeve simultaneously transmits the torque from the manpower and the motor to the output tooth disc, thereby achieving the effect of assisting force; once the torque sensor detects the torque on the central shaft is disappeared, the torque sensor sends a signal of the torque disappearance to the controller, so that the controller can control the motor to be directly powered off.
The beneficial effects are that: the invention has simple structure, the axis of the motor is parallel to the lower pipe of the five-way structure, and then the combination structure of the planetary gear and the bevel gear is used, so that the motor has attractive appearance and can be completely combined with the lower pipe to form a hidden effect; three specific embodiments are designed based on the motor hiding effect, each embodiment has advantages and disadvantages, and a series of pain points in the transmission process are solved; in particular, the third embodiment can also be converted into a pure electric mode.
Drawings
FIG. 1 is a schematic diagram of the motor installation position of the device;
FIG. 2 is a schematic diagram of an "embodiment one";
FIG. 3 is a schematic diagram of "example two";
FIG. 4 is a schematic diagram of "example three";
fig. 5 is a schematic diagram of another structure of "embodiment one".
Detailed Description
The present invention will be further described with reference to the accompanying drawings, wherein the "overrunning clutch" referred to herein is a generic term for clutches, and specifically may be a ratchet pawl/wedge structure, a one-way bearing structure, etc.
The staggered shaft middle motor of the power-assisted bicycle shown in the attached figures 1 to 5 comprises a five-way structure of the power-assisted bicycle, wherein the five-way structure comprises a rear lower fork 13, a middle pipe 14, a lower pipe 15 and a middle shaft 11, and the two ends of the middle shaft 11 are connected with pedal cranks; the motor 1 is fixedly arranged at the lower part of the lower pipe 15, and the axis of the motor 1 is consistent with the length direction of the lower pipe 15;
the device also comprises a drive bevel gear 6, a driven bevel gear 9, a torque transmission sleeve 10, an output tooth disc 8 and a torque sensor 7;
the output end of the motor 1 is connected with a drive bevel gear 6 in a coaxial transmission way through a planetary gear train, and the drive bevel gear 6 transmits torque from the output end of the motor 1 to an output tooth disc 8 through a meshed driven bevel gear 9;
the central shaft 11 is synchronously connected with the torque transmission sleeve 10 through the center of the torque sensor 7, the torque sensor 7 can detect the torque transmitted to the torque transmission sleeve 10 by the central shaft 11 in real time, the torque sensor 7 is used for detecting the torque applied to the central shaft 11 by manpower, the torque sensor 7 has wide application in the field of moped, for example, a torque sensor with the model of FC-SBBRT of Germany NCTE brand is one of the torque sensors, so that the specific structure is not described in detail, and in general, the spline structures of the central shaft 11, the torque sensor 7 and the torque transmission sleeve 10 achieve the synchronous effect; the torque transmission sleeve 10 transmits the torque from the center shaft 11 to the output dental tray 8 coaxially;
the planetary gear train of the embodiment consists of a sun gear 2, a planetary carrier 2, a planetary gear 4 and an inner gear ring 5; the planet carrier 2 is a fixing piece; the output shaft of the motor 1 is synchronously connected with the sun gear 2 in the same axial center; since the planetary gear train is an existing classical transmission structure, it is not described in detail herein;
the scheme is derived from the general structure, and the following three embodiments are respectively characterized in that:
example one (as in fig. 2):
the inner gear ring 5 is fixedly connected with the drive bevel gear 6 in a coaxial manner; the torque transmission sleeve 10 is fixedly connected with the output dental disc 8 in a coaxial manner; the driven bevel gear 9 is in coaxial transmission fit with the torque transmission sleeve 10 through the A overrunning clutch 12; when the middle shaft 11 is driven by manpower, the torque on the middle shaft 11 is transmitted to the torque transmission sleeve 10 through the torque sensor 7, meanwhile, the torque sensor 7 transmits a detected torque signal to the controller, so that the controller drives the motor 1, the output torque of the motor is amplified through the planetary gear train and then transmitted to the driven bevel gear 9 through the driving bevel gear 6, and then the driven bevel gear 9 transmits the torque to the torque transmission sleeve 10 through the A overrunning clutch 12, so that the torque transmission sleeve 10 simultaneously transmits the torque from the manpower and the motor 1 to the output dental disc 8, and the effect of assisting force is achieved; when the manpower stops, the moment sensor 7 detects that the forward torque and the forward stepping frequency signal on the center shaft (11) disappear, at the moment, the motor inertia force is applied to the moment sensor 7 to generate a reverse moment, and the moment sensor 7 sends a reverse signal to the controller, so that the controller reversely energizes the motor 1, a reverse electromagnetic force opposite to the rotating direction is applied to the core rotor in the motor 1, the core rotor in the motor 1 is restrained from continuing to rotate due to inertia, and the pedal 'top foot' phenomenon is avoided. The structure of this embodiment is the most compact, but a feedback control system as described above is required to avoid the "foothold" phenomenon caused by the inertial effects of the motor rotor.
If the motor 1 is not electrified and only driven by manpower, the A overrunning clutch is in a disengaged state at the moment, so that the phenomenon that the internal rotating shaft is still dragged to form loss when the motor is not started is avoided.
In the embodiment, on the basis of fig. 2, a certain structural optimization can be performed, in fig. 2, the driven bevel gear 9 is in running fit with a bearing hole on the right side of the box body, and the optimized and modified part is shown in fig. 5, wherein the driven bevel gear 9 is not in running fit with the bearing hole on the right side of the box body, but the torque transmission sleeve 10 is in running fit with the bearing hole on the right side of the box body.
Example two (as in fig. 3):
the inner gear ring 5 is in coaxial transmission fit with the drive bevel gear 6 through the B overrunning clutch 17; one end of the driven bevel gear 9 is coaxially and fixedly connected with the output toothed disc 8; the torque transmission sleeve 10 is in coaxial transmission fit with the driven bevel gear 9 through the C overrunning clutch 16; when the middle shaft 11 is driven by manpower, the torque on the middle shaft 11 is transmitted to the torque transmission sleeve 10 through the torque sensor 7, and the torque transmission sleeve 10 transmits the manual torque to the driven bevel gear 9 through the C overrunning clutch 16; meanwhile, the torque sensor 7 transmits the detected torque signal to the controller, so that the controller drives the motor 1, and the output torque of the motor is transmitted to the driven bevel gear 9 through the driving bevel gear 6 after being amplified by the planetary gear train, so that the driven bevel gear 9 simultaneously transmits the torque from the manpower and the motor 1 to the output tooth disc 8, and the effect of assisting force is achieved;
once the moment sensor 7 detects that the torque on the middle shaft 11 disappears, the force applied to the pedal is interrupted by manpower, and the moment sensor 7 sends a signal of torque disappearance to the controller, so that the controller directly cuts off the power supply to the motor 1, even if the core rotor of the motor 1 continues to rotate due to inertia, the phenomenon of 'top foot' in the previous embodiment does not exist because the C overrunning clutch 16 is already in a disengaged state;
if the motor 1 is not electrified and only driven by manpower, the B overrunning clutch 17 is in a disengaged state, so that the internal rotating shaft is prevented from being dragged when the motor is not started, but the driving bevel gear 6 and the driven bevel gear 9 still rotate, so that certain loss is formed.
Example three (as in fig. 4):
the inner gear ring 5 is fixedly connected with the drive bevel gear 6 in a coaxial manner; a dental disc transmission sleeve 30 is coaxially connected to the dental disc 8; the driven bevel gear 9 is in coaxial transmission fit with the tooth disc transmission sleeve 30 through the D overrunning clutch 19; the torque transmission sleeve 10 is in coaxial transmission fit with the tooth disc transmission sleeve 30 through the E overrunning clutch 18;
when the middle shaft 11 is driven by manpower, the torque on the middle shaft 11 is transmitted to the torque transmission sleeve 10 through the torque sensor 7, and the torque transmission sleeve 10 transmits the manual torque to the tooth disc transmission sleeve 30 through the E overrunning clutch 18; simultaneously, the torque sensor 7 transmits the detected torque signal to the controller, so that the controller drives the motor 1, the output torque of the motor is amplified by the planetary gear train and then transmitted to the dental disc transmission sleeve 30 through the D overrunning clutch 19 by the drive bevel gear 6, and the dental disc transmission sleeve 30 simultaneously transmits the torque from the manpower and the motor 1 to the output dental disc 8, thereby achieving the effect of assisting force;
once the moment sensor 7 detects that the torque on the middle shaft 11 disappears, the force applied to the pedal is interrupted by manpower, and the moment sensor 7 sends a signal of torque disappearance to the controller, so that the controller directly cuts off the power supply to the motor 1, and even if the movement rotor of the motor 1 continues to rotate due to inertia, the phenomenon of 'top foot' does not exist because the E overrunning clutch 18 is in a disengaged state;
if the motor 1 is not electrified and only driven by manpower, the D overrunning clutch 19 is in a disengaged state, so that the internal rotating shaft is prevented from being dragged when the motor is not started, and the drive bevel gear 6 and the driven bevel gear 9 are not dragged under the condition, thereby having more enhanced transmission efficiency compared with the previous embodiment.
Meanwhile, the embodiment can be converted into a pure electric driving mode, and the mode completely independent of manpower is as follows: on the basis that the manpower does not drive the middle shaft 11, the controller directly controls the motor 1 to output torque, so that the dental tray 8 is finally driven to rotate, and the E overrunning clutch 18 is in a disengaged state, so that the problem of 'top foot' does not exist.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (1)
1. A staggered shaft middle motor of a booster bicycle comprises a five-way shaft and a middle shaft (11) of the booster bicycle; the motor (1) is arranged on the five-way pipe; the device also comprises a drive bevel gear (6), a driven bevel gear (9), a torque transmission sleeve (10), an output tooth disc (8) and a torque sensor (7); the output end of the motor (1) is connected with a drive bevel gear (6) through a planetary gear train transmission, and the drive bevel gear (6) finally transmits torque from the output end of the motor (1) to an output dental disk (8) through a meshed driven bevel gear (9);
the center shaft (11) is synchronously connected with the torque transmission sleeve (10) through the torque sensor (7), and the torque sensor (7) can detect the torque transmitted to the torque transmission sleeve (10) by the center shaft (11) in real time; the torque transmission sleeve (10) finally transmits the torque from the middle shaft (11) to the output dental tray (8);
the motor (1) is arranged on the five-way lower pipe (15), and the axis of the motor (1) is consistent or nearly consistent with the length direction of the lower pipe (15); the planetary gear train consists of a sun gear (3), a planetary support (2), a planet wheel (4) and an inner gear ring (5); an output shaft of the motor (1) is synchronously connected with the sun gear (3) in a coaxial center manner;
the inner gear ring (5) is fixedly connected with the drive bevel gear (6) through the same shaft; the torque transmission sleeve (10) is fixedly connected with the output dental tray (8) in a coaxial manner; the driven bevel gear (9) is in coaxial transmission fit with the torque transmission sleeve (10) through the A overrunning clutch (12);
when the middle shaft (11) is driven by manpower, the torque sensor (7) transmits detected torque signals to the controller, so that the controller starts the motor (1), and the torque transmission sleeve (10) simultaneously transmits the torque from the manpower and the motor (1) to the output dental tray (8);
when the moment sensor (7) detects that the forward torque and the forward stepping frequency signal on the center shaft (11) disappear during manual stopping, the motor inertia force is applied to the moment sensor (7) at the moment, and the moment sensor (7) sends a reverse signal to the controller, so that the controller reversely energizes the motor (1), and a reverse electromagnetic force opposite to the rotation direction is applied to the movement rotor in the motor (1) so as to inhibit the movement rotor in the motor (1) from continuing to rotate due to inertia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210841499.3A CN115123439B (en) | 2022-07-18 | 2022-07-18 | Staggered shaft middle motor of booster bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210841499.3A CN115123439B (en) | 2022-07-18 | 2022-07-18 | Staggered shaft middle motor of booster bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115123439A CN115123439A (en) | 2022-09-30 |
| CN115123439B true CN115123439B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210841499.3A Active CN115123439B (en) | 2022-07-18 | 2022-07-18 | Staggered shaft middle motor of booster bicycle |
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| CN (1) | CN115123439B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103661773A (en) * | 2013-12-26 | 2014-03-26 | 苏州德佳物联科技有限公司 | Central system based on wireless torque detection |
| CN103879506A (en) * | 2014-02-11 | 2014-06-25 | 苏州工业园区同盛车业有限公司 | Center shaft torque sensing device of electric bicycle |
| CN104276251A (en) * | 2014-10-31 | 2015-01-14 | 太仓市荣驰电机有限公司 | Torque sensing system for middle shaft of electric vehicle |
| CN210852778U (en) * | 2019-08-12 | 2020-06-26 | 苏州万佳电器有限公司 | Power-assisted bicycle and middle-arranged driving mechanism with load-reducing function |
| CN111391961A (en) * | 2020-05-09 | 2020-07-10 | 苏州盛亿电机有限公司 | Middle shaft transmission device of electric bicycle |
| CN112896409A (en) * | 2019-11-19 | 2021-06-04 | 苏州万佳电器有限公司 | A put actuating mechanism and moped in for moped |
-
2022
- 2022-07-18 CN CN202210841499.3A patent/CN115123439B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103661773A (en) * | 2013-12-26 | 2014-03-26 | 苏州德佳物联科技有限公司 | Central system based on wireless torque detection |
| CN103879506A (en) * | 2014-02-11 | 2014-06-25 | 苏州工业园区同盛车业有限公司 | Center shaft torque sensing device of electric bicycle |
| CN104276251A (en) * | 2014-10-31 | 2015-01-14 | 太仓市荣驰电机有限公司 | Torque sensing system for middle shaft of electric vehicle |
| CN210852778U (en) * | 2019-08-12 | 2020-06-26 | 苏州万佳电器有限公司 | Power-assisted bicycle and middle-arranged driving mechanism with load-reducing function |
| CN112896409A (en) * | 2019-11-19 | 2021-06-04 | 苏州万佳电器有限公司 | A put actuating mechanism and moped in for moped |
| CN111391961A (en) * | 2020-05-09 | 2020-07-10 | 苏州盛亿电机有限公司 | Middle shaft transmission device of electric bicycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115123439A (en) | 2022-09-30 |
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