CN106864658B - Electric bicycle center shaft reverse brake mechanism with reverse brake failure protection function - Google Patents
Electric bicycle center shaft reverse brake mechanism with reverse brake failure protection function Download PDFInfo
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- CN106864658B CN106864658B CN201710225164.8A CN201710225164A CN106864658B CN 106864658 B CN106864658 B CN 106864658B CN 201710225164 A CN201710225164 A CN 201710225164A CN 106864658 B CN106864658 B CN 106864658B
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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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- 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
- B62J3/00—Acoustic signal devices; Arrangement of such devices on cycles
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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
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
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- Combustion & Propulsion (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
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Abstract
The invention discloses an electric bicycle middle shaft reverse brake mechanism with a reverse brake failure protection function, which comprises a middle shaft arranged on a frame, a reverse brake signal generating device arranged on the middle shaft, a controller used for receiving the signal to brake a motor, and a torque sensor fixed on the middle shaft and electrically connected with the controller, wherein when the middle shaft is stressed due to the execution of reverse braking, the reverse brake signal generating device outputs a reverse brake signal to the controller to brake the motor; the torque sensor can output a negative torque signal to the controller when the central shaft is stressed due to the execution of the reverse brake, when the reverse brake signal is identified by the controller, the negative torque signal is not identified, and when the reverse brake signal is not identified, the negative torque signal is identified by the controller, the motor is braked by the negative torque signal, and meanwhile, an alarm signal for the failure of the reverse brake is sent out. The invention has double reverse brake protection functions, can still send a reverse brake signal to brake the motor and send out warning under the condition that the reverse brake signal generating device fails, and provides more reliable riding safety guarantee.
Description
Technical Field
The invention relates to a middle shaft reverse brake mechanism of an electric bicycle with a reverse brake failure protection function.
Background
The back braking mechanism is a mechanism for generating braking effect by using a pedal, namely, when a chain is reversely pedaled by a crank and is reversely rotated, the back braking mechanism is linked with a braking mechanism arranged in a hub shaft, so as to generate the action of braking a rear wheel. The brake mechanism is applied to the old traditional bicycles in the past, which is rare in our country, but has larger requirements in some countries and regions, and some of the brake mechanisms are also applied as the standard of bicycle safety brake mechanisms.
Along with electric (helping hand) bicycle in the extensive popularization and development of global scope, above-mentioned mechanism of stopping backwards also can apply to partial electric bicycle naturally, because electric bicycle is the high-speed operation of motor when riding, if give its instantaneous brake instruction under the prerequisite that the motor does not stop the operation, not only can't effectual bicycle of stopping the brake, and still will cause the damage of motor burnout and brake mechanism, influence even and ride passerby's safety. Therefore, the known electric bicycles are mostly provided with a reverse braking signal generating device based on a Hall sensing element, the device can output a reverse braking signal to the controller when a person reversely pedals a pedal to enable a middle shaft to be stressed, and then the controller brakes the motor, so that the riding safety is improved.
However, because the back brake hall and the magnetic steel are worn or even damaged in the long-term use process, the back brake signal generating device may be out of order in the riding process of the existing electric bicycle, in this case, the back brake action of a person is executed, but the back brake signal cannot be output, and the controller cannot identify the back brake signal, so that the motor cannot be braked, which brings great danger to a rider. Therefore, how to provide a middle shaft reverse brake mechanism of an electric bicycle with a reverse brake failure protection function, the controller can still recognize a reverse brake signal and brake a motor under the condition that a reverse brake signal generating device fails, and the important problem about the riding safety of the electric bicycle is urgently solved at present.
Disclosure of Invention
The invention aims to: the utility model provides an electric bicycle axis mechanism of stopping backward with fall and stop failure protect function has more reliable the safety guarantee of riding.
The technical scheme of the invention is as follows: a kind of electric bicycle middle shaft with failure protection function of back braking is reverse to stop the organization, including the middle shaft set in frame, set up in middle shaft the signal generating device of back braking and controller used for receiving the signal of back braking in order to brake the electrical machinery, when the middle shaft is forced because of carrying out the back braking, the said signal generating device of back braking outputs the signal of back braking to the controller in order to brake the electrical machinery, also include the torque sensor fixed on middle shaft and electrically connected with controller; the method is characterized in that: the torque sensor can output a negative torque signal to the controller when the central shaft is stressed due to the fact that reverse braking is executed, when the reverse braking signal is identified by the controller, the negative torque signal is not identified, and when the reverse braking signal is not identified, the negative torque signal is identified by the controller, the motor is braked by the negative torque signal, and meanwhile an alarm signal of reverse braking failure is sent out.
Further, the reverse brake signal generating device comprises a transmission gear, a drive plate, a reverse brake Hall, magnetic steel and a lead-out coil component:
the transmission gear is sleeved on the middle shaft and is used for being meshed with an output gear arranged on an output shaft of the motor; meanwhile, a chain wheel is coaxially fixed on the transmission gear and is connected with a back braking mechanism arranged on a rear wheel of the bicycle through a chain;
the driving plate is fixed on the middle shaft, a working cavity matched with the driving plate is arranged on the transmission gear, a plurality of working grooves are formed in the circumferential wall of the working cavity, a driving lever is arranged on the driving plate and corresponds to each working groove, and the driving lever can rotate along with the forward and reverse rotation of the middle shaft and can move between two end walls of the corresponding working groove;
a reverse brake Hall is fixed on the middle shaft, and a magnetic steel matched with the reverse brake Hall is fixed on the transmission gear;
the leading-out coil assembly comprises a fixed coil fixed on the frame and a rotating coil fixed on the middle shaft, the fixed coil and the rotating coil are coaxially arranged, the back brake Hall is electrically connected with the rotating coil, and the fixed coil is connected with the controller and a power supply of the electric bicycle;
when a person pedals the bicycle forwards, the deflector rod abuts against the first end wall of the corresponding working groove, so that the middle shaft drives the transmission gear and the chain wheel to rotate forwards synchronously; at the moment, the magnetic steel and the reverse brake Hall are in a first magnetic flux induction position;
when a person pedals the bicycle backwards, the deflector rod moves from the first end wall of the corresponding working groove to be abutted against the second end wall, so that the middle shaft rotates relative to the transmission gear, and the chain wheel is driven to rotate reversely after a certain time delay; in the process, the magnetic steel and the back-braking Hall are in second magnetic flux induction and generate magnetic flux change, so that the back-braking Hall sends out a back-braking signal and transmits the back-braking signal to the controller through the leading-out coil assembly to brake the motor.
Preferably, the torque sensor comprises a shaft sleeve deformation body fixed on the middle shaft, the back brake hall, the drive plate and the rotating coil are all fixed with the periphery of the shaft sleeve deformation body, an induction element arranged on the shaft sleeve deformation body is electrically connected with the rotating coil, and the torque sensor realizes wireless power supply and wireless transmission by means of the cooperation of the fixed coil and the rotating coil.
More preferably, a rotating coil mounting bracket is fixed on the shaft sleeve deformation body, the rotating coil is wound on the rotating coil mounting bracket, a fixed coil mounting bracket is fixed on the frame, and the fixed coil is wound on the fixed coil mounting bracket.
Preferably, the invention also comprises an instrument warning lamp or a buzzer which is connected with the controller, and when the controller sends out a warning signal that the back brake is invalid, the instrument warning lamp is turned on or the honey device sends out a warning sound.
Furthermore, a return spring is arranged between the shift lever and the second end wall in the corresponding working groove in a propping manner.
More preferably, the return spring in the present invention is a variable pitch spring.
Furthermore, when more than one working groove is arranged, the working grooves are uniformly distributed at intervals along the circumferential wall of the working cavity.
Furthermore, the number of the magnetic steels is two, the magnetic steels are divided into a first magnetic steel and a second magnetic steel with different magnetic field strengths, when a person pedals the bicycle in front to enable the shifting rod to abut against the first end wall of the corresponding working groove, the reverse brake Hall is opposite to the first magnetic steel, and when the person pedals the bicycle in back to enable the shifting rod to move from the first end wall of the corresponding working groove to abut against the second end wall, the reverse brake Hall is opposite to the second magnetic steel.
Furthermore, a bearing is arranged between the transmission gear and the middle shaft.
The middle shaft related in the invention is a component formed by a middle motor of the electric bicycle, and two ends of the middle shaft are provided with pedals through cranks as in the conventional technology.
It should be noted that the torque sensor of the present invention is a conventional technology, and the main body of the torque sensor is a shaft sleeve deformation body, the shaft sleeve deformation body is made of an elastic material, and is disposed on the center shaft of the electric bicycle, and can be twisted and deformed due to the torsion of the center shaft, and the corresponding sensing element is disposed in the shaft sleeve deformation body, and can generate torque signal output by sensing a small deformation.
The invention also relates to a preposed signal generating device of the back braking mechanism of the electric bicycle, which is a known technology for the related braking mechanism which is connected with a chain wheel through a chain and is arranged on a wheel hub of a wheel (a rear wheel), and the structure, the assembly mode and the action principle of the braking mechanism can be all involved in the prior art, so that the invention does not detailed the braking mechanism.
The invention has the advantages that:
1. the invention has double reverse brake protection functions, can still send a reverse brake signal to brake the motor and send a warning that the reverse brake device is damaged under the condition that the reverse brake signal generating device fails, and provides more reliable riding safety guarantee.
2. The known reverse braking signal generating device and the middle shaft thereof are reasonably designed and combined with the torque sensor, for example, the transmission gear, the drive plate and the rotating coil are all arranged at the periphery of the shaft sleeve deformation body of the torque sensor, so that the structure is simplified, and the space of the middle motor part in the middle of the frame is reasonably utilized.
3. The torque sensor not only keeps the original torque signal transmission function, but also can output a negative torque signal to be matched with the reverse braking signal generating device to realize the reverse braking failure protection function, and has two purposes, so that the equipment transformation cost is reduced, and the practicability is improved.
4. The reset spring further adopts a variable-pitch spring, so that the function of the reset spring can ensure that the reverse brake Hall is quickly reset, and meanwhile, the elastic force of the drive plate caused by the reset of the spring is in a decreasing state, and the phenomena of abnormal sound and 'pin hitting' when the drive plate (and a transmission gear) collide due to too large elastic force are avoided.
5. The invention is used as a leading-out coil component of the signal leading-out and power supply mechanism of the back brake Hall and the torque sensor, adopts two coils which are concentrically configured to induce and transmit signals, is a non-contact type signal transmission mechanism, has no leading-out line entanglement and damage compared with a conventional connecting line contact type transmission mechanism, simplifies the structure, is convenient for a designer to install, and simultaneously ensures that the integral working sensitivity and reliability of the device are higher. And the non-contact signal transmission mechanism does not need to consider too many factors when in structural layout configuration, does not need to adopt a complicated and precise mechanical anti-interference line leading-out mechanism, has higher installation speed, can greatly improve the production efficiency and saves the production cost.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a main sectional view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the bottom bracket and dials engagement of FIG. 1 (bicycle free state);
FIG. 3 is a cross-sectional view of the middle axle and the driving plate of FIG. 1 (the position relationship between the inverted brake Hall and the magnetic steel when the front pedal bicycle is in a forward state);
fig. 4 is a cross-sectional view of the bottom bracket and the dial of fig. 1 in cooperation (back braking state of the back pedaled bicycle).
Wherein: 1. a frame; 2. a middle shaft; 3. a dial; 3a, a deflector rod; 4. a transmission gear; 4a, a working groove; A. a first end wall; B. a second end wall; 5. a reverse brake Hall device; 6. a first magnetic steel; 7. a second magnetic steel; 8. rotating the coil; 9. fixing the coil; 10. rotating the coil mounting bracket; 11. fixing a coil mounting bracket; 12. a variable pitch spring; 13. a bearing; p, a torque sensor; 14. the shaft sleeve deforming body.
Detailed Description
Example (b): with reference to fig. 1 to 4, a specific embodiment of the reverse braking mechanism of the bottom bracket bearing of the electric bicycle with the reverse braking failure protection function provided by the present invention is specifically described as follows:
the electric bicycle middle shaft reverse brake mechanism with the reverse brake failure protection function provided by the embodiment is mainly assembled on an electric bicycle adopting a middle motor, and consists of a middle shaft 2 arranged on a frame 1, a reverse brake signal generating device arranged on the middle shaft 2, a controller used for receiving the signal to brake the motor and a torque sensor P which is fixed on the middle shaft 2 and electrically connected with the controller, as shown in fig. 1, wherein the motor and the controller are omitted and are not shown.
The torque sensor P in this embodiment is a conventional technology, and the main body of the torque sensor P is a shaft sleeve deformation body 14, the shaft sleeve deformation body 14 is made of an elastic material, and is fixed to the center shaft 2 of the electric bicycle, and can be twisted and deformed due to the torsion of the center shaft 2, and the shaft sleeve deformation body 14 is provided with a corresponding sensing element therein, and can generate a torque signal output by sensing a small deformation.
Further referring to fig. 1 to 4, the specific structure of the reverse brake signal generating device in this embodiment is as follows: the brake device is composed of a transmission gear 4, a drive plate 3, a reverse brake Hall 5, magnetic steel, a lead-out coil component and a bearing 13.
The transmission gear 4 is sleeved on the middle shaft 2 through a bearing 13, and the transmission gear 4 is used for being meshed with an output gear (not shown in the figure) arranged on an output shaft of the motor; meanwhile, a chain wheel (not shown in the figure) is coaxially fixed on the transmission gear 4 and is connected with a back braking mechanism arranged on the rear wheel of the bicycle through a chain.
The dial plate 3 is fixed on a shaft sleeve deformation body of the middle shaft 2, a working cavity matched with the dial plate 3 is arranged on the transmission gear 4, specifically, as shown in fig. 2-4, three working grooves 4a are uniformly arranged on the circumferential wall of the working cavity at intervals, a shift lever 3a is arranged on the dial plate 3 corresponding to each working groove 4a, and the shift lever 3a can rotate along with the positive and negative rotation of the middle shaft 2 and can move between two end walls of the corresponding working groove 4a, namely a first end wall A and a second end wall B, as shown in the figure. And a variable-pitch spring 12 is arranged between each shift lever 3a and the second end wall B in the corresponding working groove 4 a.
In the embodiment, a back brake hall 5 is fixed on the periphery of a shaft sleeve deformation body 14 of the middle shaft 2 through a support, as shown in fig. 1, and a magnetic steel matched with the back brake hall 5 is fixed on the transmission gear 4; as shown in fig. 2 to 4, the number of the magnetic steels is two, and the two magnetic steels are divided into a first magnetic steel 6 and a second magnetic steel 7 with different magnetic field strengths, and when a person pedals the bicycle forward to make the shift lever 3a abut against the first end wall a of the corresponding working groove 4a, the reverse brake hall 5 is opposite to the first magnetic steel 6, as shown in fig. 3; when a person pedals the bicycle backwards to enable the shifting lever 3a to move from the first end wall A of the corresponding working groove 4a to be abutted against the second end wall B, the reverse brake Hall 5 is opposite to the second magnetic steel 7, as shown in fig. 4.
In this embodiment, the lead-out coil assembly is composed of a rotating coil 8 and a fixed coil 9 which are coaxially arranged, a rotating coil mounting bracket 10 is fixed on the shaft sleeve deformation body 14, the rotating coil 8 is wound on the rotating coil mounting bracket 10, a fixed coil mounting bracket 11 is fixed on the frame 1, and the fixed coil 9 is wound on the fixed coil mounting bracket 11. The reverse brake hall 5 is electrically connected with the rotating coil 8, and the fixed coil 9 is connected with the controller and the power supply of the electric bicycle, as shown in fig. 1. And the induction element arranged on the shaft sleeve deformation body 14 is also electrically connected with the rotating coil 8, namely, the torque sensor also realizes wireless power supply and wireless transmission by means of the matching of the fixed coil 9 and the rotating coil 8.
The embodiment also comprises an instrument warning lamp or a buzzer which is connected with the controller, and when the controller sends an alarm signal indicating that the back brake is invalid, the warning lamp is turned on or the honey device sends an alarm sound.
Finally, the working principle of the mechanism in this case will be described with reference to fig. 2 to 3 for each state of the electric bicycle:
1. free state
When a person does not step on the electric bicycle, as shown in fig. 2, the back brake hall 5 is opposite to the first magnetic steel 6, that is, the back brake hall 5 is at the first magnetic flux induction position, and does not output a back brake signal; and because the shaft sleeve deformation body 14 on the middle shaft 2 is not deformed under the action of external force, a (positive) torque signal is not generated and is output to the motor, and the motor does not work.
2. Forward state
When a person pedals the bicycle forwards, the middle shaft 2 is stressed, but the driving plate 3 fixed on the shaft sleeve deformation body 14 cannot rotate at the moment, so that the shaft sleeve deformation body 14 deforms, a torque signal is generated, and the motor is driven to work. As shown in fig. 3, at this time, as in the case of the free state, the reverse brake hall 5 is opposite to the first magnetic steel 6, that is, the reverse brake hall 5 is still at the first magnetic flux sensing position, and does not output the reverse brake signal.
3. Reverse braking state
When a person pedals the bicycle backwards to perform the reverse braking action, as shown in fig. 4, the middle shaft 2 is subjected to a force opposite to the riding direction, the shift lever 3a moves from the first end wall A of the corresponding working groove 4a to be abutted against the second end wall B, and the variable-pitch spring 12 is subjected to a force to be compressed and deformed. In the process, the middle shaft 2 drives the reverse brake hall 5 to move through the shaft sleeve deformation body 14 on the middle shaft, and the reverse brake hall 5 is opposite to the second magnetic steel 7, namely is located at a second magnetic flux induction position. Because the magnetic field intensity of first magnet steel 6 and second magnet steel 7 is different, so produce the magnetic flux change for the hall 5 that brakes backward sends the signal of braking backward and transmits for the controller in order to brake the motor through drawing forth coil assembly.
Above-mentioned when backing off, axis 2 receives the power that is opposite to the direction of riding, axle sleeve variant 14 exports negative torque signal to the controller to when aforementioned signal of backing off is discerned by the controller, negative torque signal is not discerned, and when the signal of backing off is not discerned, negative torque signal is discerned by the controller to with this brake motor, send the alarm signal of the inefficacy of backing off simultaneously, make warning light or honey ware send the chimes of doom.
4. Free state
When removing the power of the direction of riding that is opposite to that applys to axis 2, variable pitch spring 12 resets to drive driver plate 3 and reset, the driver plate 3 back that resets, thereby the drive resets rather than fixed axle sleeve morpheme 14 and makes the hall 5 that stops backward that is fixed in on the axle sleeve morpheme 14 reset, and the hall 5 that stops backward this moment responds to first magnet steel 6, gets back to first magnetic flux induction position again, does not output the signal of stopping backward. But because the middle shaft 2 is not stressed, a moment signal is not generated, and the motor does not work.
It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (10)
1. A middle shaft reverse braking mechanism of an electric bicycle with a reverse braking failure protection function comprises a middle shaft (2) arranged on a frame (1), a reverse braking signal generating device arranged on the middle shaft (2), a controller used for receiving a reverse braking signal to brake a motor, and a torque sensor (P) which is fixed on the middle shaft (2) and electrically connected with the controller, wherein when the middle shaft (2) is stressed due to the execution of reverse braking, the reverse braking signal generating device outputs the reverse braking signal to the controller to brake the motor; the method is characterized in that: the torque sensor (P) can output a negative torque signal to the controller when the middle shaft (2) is stressed due to the implementation of the reverse brake, when the reverse brake signal is identified by the controller, the negative torque signal is not identified, and when the reverse brake signal is not identified, the negative torque signal is identified by the controller, the motor is braked by the negative torque signal, and meanwhile, an alarm signal for the failure of the reverse brake is sent out.
2. The electric bicycle bottom bracket axle reverse brake mechanism with reverse brake failure protection function according to claim 1, characterized in that the reverse brake signal generating device comprises a transmission gear (4), a drive plate (3), a reverse brake Hall (5), magnetic steel and an outgoing coil component:
the transmission gear (4) is sleeved on the middle shaft (2), and the transmission gear (4) is used for being meshed with an output gear arranged on an output shaft of the motor; meanwhile, a chain wheel is coaxially fixed on the transmission gear (4), and the chain wheel is connected with a back braking mechanism arranged on a rear wheel of the bicycle through a chain;
the driving plate (3) is fixed on the middle shaft (2), the transmission gear (4) is provided with a working cavity matched with the driving plate (3), the circumferential wall of the working cavity is provided with a plurality of working grooves (4a), the driving plate (3) is provided with a shifting rod (3a) corresponding to each working groove (4a), and the shifting rod (3a) can rotate along with the positive and negative rotation of the middle shaft (2) and can move between two end walls (A, B) of the corresponding working groove (4 a);
the middle shaft (2) is fixedly provided with a reverse brake Hall (5), and the transmission gear (4) is fixedly provided with magnetic steel matched with the reverse brake Hall (5);
the leading-out coil assembly comprises a fixed coil (9) fixed on the frame (1) and a rotating coil (8) fixed on the middle shaft (2), the fixed coil (9) and the rotating coil (8) are coaxially arranged, the inverted brake Hall (5) is electrically connected with the rotating coil (8), and the fixed coil (9) is connected with a controller and a power supply of the electric bicycle;
when a person pedals the bicycle forwards, the driving lever (3a) is abutted against the first end wall (A) of the corresponding working groove (4a), so that the middle shaft (2) drives the transmission gear (4) and the chain wheel to rotate forwards synchronously; at the moment, the magnetic steel and the reverse brake Hall (5) are in a first magnetic flux induction position;
when a person pedals the bicycle, the driving lever (3a) moves from the first end wall (A) of the corresponding working groove (4a) to be abutted against the second end wall (B), so that the middle shaft (2) rotates relative to the transmission gear (4), and drives the chain wheel to rotate reversely after a certain time delay; in the process, the magnetic steel and the reverse brake Hall (5) are in second magnetic flux induction and generate magnetic flux change, so that the reverse brake Hall (5) sends a reverse brake signal and transmits the reverse brake signal to the controller through the leading-out coil assembly to brake the motor.
3. The electric bicycle center shaft reverse brake mechanism with the reverse brake failure protection function according to claim 2 is characterized in that the torque sensor (P) comprises a shaft sleeve deformation body (14) fixed on the center shaft (2), the reverse brake Hall (5), the drive plate (3) and the rotating coil (8) are all fixed with the periphery of the shaft sleeve deformation body (14), and an induction element arranged on the shaft sleeve deformation body (14) is electrically connected with the rotating coil (8).
4. The electric bicycle bottom bracket back brake mechanism with back brake failure protection function according to claim 3 is characterized in that a rotating coil mounting bracket (10) is fixed on the shaft sleeve deformation body (14), the rotating coil (8) is wound on the rotating coil mounting bracket (10), a fixed coil mounting bracket (11) is fixed on the frame (1), and the fixed coil (9) is wound on the fixed coil mounting bracket (11).
5. The electric bicycle center shaft reverse brake mechanism with the reverse brake failure protection function as claimed in claim 1, further comprising an instrument warning lamp or a buzzer connected with the controller, wherein when the controller sends a reverse brake failure alarm signal, the instrument warning lamp is turned on or the honey device sends an alarm sound.
6. The electric bicycle bottom bracket back brake mechanism with the back brake failure protection function according to claim 2, characterized in that a return spring is arranged between the shift lever (3a) and the second end wall (B) in the corresponding working groove (4 a).
7. The electric bicycle bottom bracket back brake mechanism with back brake failure protection function according to claim 6 is characterized in that the return spring is a variable pitch spring (12).
8. The electric bicycle bottom bracket back brake mechanism with the back brake failure protection function according to claim 2 is characterized in that when the number of the working grooves (4a) is more than one, the working grooves are uniformly distributed at intervals along the circumferential wall of the working cavity.
9. The bottom bracket axle back brake mechanism of the electric bicycle with back brake failure protection function as claimed in claim 2, wherein the number of the magnetic steels is two, and the two magnetic steels are divided into a first magnetic steel (6) and a second magnetic steel (7) with different magnetic field strengths, when a person pedals the bicycle in front to make the shift lever (3a) abut against the first end wall (A) of the corresponding working groove (4a), the back brake Hall (5) is opposite to the first magnetic steel (6), and when a person pedals the bicycle in back to make the shift lever (3a) move from the first end wall (A) of the corresponding working groove (4a) to abut against the second end wall (B), the back brake Hall (5) is opposite to the second magnetic steel (7).
10. The electric bicycle bottom bracket axle back brake mechanism with back brake failure protection function according to claim 2 is characterized in that a bearing (13) is arranged between the transmission gear (4) and the bottom bracket axle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225164.8A CN106864658B (en) | 2017-04-07 | 2017-04-07 | Electric bicycle center shaft reverse brake mechanism with reverse brake failure protection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710225164.8A CN106864658B (en) | 2017-04-07 | 2017-04-07 | Electric bicycle center shaft reverse brake mechanism with reverse brake failure protection function |
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| CN106864658A CN106864658A (en) | 2017-06-20 |
| CN106864658B true CN106864658B (en) | 2022-03-22 |
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| CN201710225164.8A Active CN106864658B (en) | 2017-04-07 | 2017-04-07 | Electric bicycle center shaft reverse brake mechanism with reverse brake failure protection function |
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| CN107600297B (en) * | 2017-10-23 | 2024-01-19 | 苏州捷诚科技有限公司 | Fluted disc type wireless energy signal transmission torque sensor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB434776A (en) * | 1934-04-25 | 1935-09-09 | Fichtel & Sachs Ag | Improvements in and relating to coaster hubs |
| JPH07215259A (en) * | 1994-01-28 | 1995-08-15 | Koyo Seiko Co Ltd | Electrically travel-assisted |
| DE102011077903A1 (en) * | 2011-06-21 | 2012-12-27 | Brose Fahrzeugteile Gmbh & Co. Kg, Coburg | Drive device for an electric bike |
| CN102602494B (en) * | 2012-03-30 | 2013-06-26 | 张建民 | Brake controller for bicycle pedal brake device |
| CN103171733B (en) * | 2013-04-09 | 2015-09-30 | 苏州八方电机科技有限公司 | A kind of electrical bicycle middle shaft moment sensor |
| JP6209508B2 (en) * | 2014-12-25 | 2017-10-04 | 株式会社シマノ | Bicycle drive unit |
| CN106043583B (en) * | 2016-07-21 | 2018-06-22 | 苏州盛亿电机有限公司 | The axis apparatus for transmitting signal of falling brake with electric bicycle operating status discrimination function |
| CN206750059U (en) * | 2017-04-07 | 2017-12-15 | 苏州盛亿电机有限公司 | Electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake |
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