CN206750059U - Electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake - Google Patents
Electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake Download PDFInfo
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- CN206750059U CN206750059U CN201720363249.8U CN201720363249U CN206750059U CN 206750059 U CN206750059 U CN 206750059U CN 201720363249 U CN201720363249 U CN 201720363249U CN 206750059 U CN206750059 U CN 206750059U
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- falling brake
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- brake
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Abstract
The utility model discloses a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake; including the axis being arranged on vehicle frame, the signal generation device of falling brake being arranged on axis and for receiving the signal with the controller of braking motor; when axis because perform fall to stop and during stress; the signal generation device of falling brake exports the signal of falling brake with braking motor to controller, in addition to is fixed on the torque sensor on axis and being electrically connected with the controller；Torque sensor can fall to stop and export negative torque signal to controller during stress in axis because performing, and when the signal of falling brake is identified by controller, negative torque signal is not identified, and when the signal of falling brake is not identified, negative torque signal is identified by controller, and with this braking motor, the alarm signal for the failure that is simultaneously emitted by stopping.The utility model has the dual defencive function of falling brake, still can send the signal of falling brake braking motor in the case where the signal generation apparatus of falling brake fails and send warning, there is provided relatively reliable riding safety guarantee.
Description
Technical field
It the utility model is related to a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake.
Background technology
Dao Sha mechanisms are that the mechanism of braking effect is produced with pedal, that is, provide and reversed using chain by crank back-pedalling
When, linked with the braking mechanism being arranged in hub spindle, so as to produce the action braked to trailing wheel.This braking mechanism exists
With more on past old-fashioned standard bicycle, our countries are more rare at present, but in some countries and regions also
There is a larger demand, and some used also as the standard of bicycle safe skidding mechanism.
With electronic（Power-assisted）Bicycle being widely popularized and develop in the world, above-mentioned Dao Sha mechanisms naturally also can
With on the electric bicycle of part, due to electric bicycle, when riding, motor runs at high speed, if do not stop transporting in motor
Its instantaneous brake instruction is given on the premise of turning, effective stop is not simply failed to and stops bicycle, and also will cause burn-down of electric motor
With the damage of braking mechanism, or even influence bicyclist's safety.Therefore it is configured with mostly on known such electric bicycle based on suddenly
The signal generation device of falling brake of your sensing element, this device can export when people's back-pedal pedal makes axis stress to controller
Stop signal, and then by controller braking motor, improve riding safety.
But even damaged because the Hall of falling brake and magnet steel have loss during long-term use, therefore it is existing electronic
Bicycle may occur to stop the situation of signal generation device failure during riding, and in this case, people falls to stop
Action has performed, but the signal of falling brake can not export, the controller None- identified signal of falling brake, thus can not braking motor, this will
Very big danger is brought to bicyclist.So how to provide in a kind of electric bicycle with the fail safe function of falling brake
Zhou Daosha mechanisms, it is ensured that controller still can identify the signal of falling brake and brake in the case that the signal generation device of falling brake fails
Motor turns into the current major issue for concerning electric bicycle riding safety for being badly in need of solving.
The content of the invention
The purpose of the utility model is：A kind of electrical bicycle middle shaft machine of falling brake with the fail safe function of falling brake is provided
Structure, there is more reliable riding safety guarantee.
The technical solution of the utility model is：A kind of electrical bicycle middle shaft machine of falling brake with the fail safe function of falling brake
Structure, including the axis being arranged on vehicle frame, the signal generation device of falling brake that is arranged on axis and for receiving the signal to make
The controller of dynamic motor, when axis falls to stop during stress because performing, the signal generation device of falling brake falls brake to controller output
Signal is with braking motor, in addition to is fixed on the torque sensor on axis and being electrically connected with the controller；It is characterized in that：It is described
Torque sensor can fall to stop and export negative torque signal to controller during stress in axis because performing, and ought the signal of falling brake be controlled
During device identification processed, the negative torque signal is not identified, and when the signal of falling brake is not identified, the negative torque signal is controlled
Device identifies, and with this braking motor, the alarm signal for the failure that is simultaneously emitted by stopping.
Further, the signal generation device of falling brake includes travelling gear, driver plate, the Hall of falling brake, magnet steel and lead-out wire
Coil assembly：
The travelling gear is sheathed on axis, and the travelling gear is used for the output gear being arranged on motor output shaft
Engagement；Meanwhile chain wheel is coaxially fixed with travelling gear, chain wheel is through chain and the Dao Sha mechanisms phase on bicycle rear
Even；
The driver plate is fixed on axis, and the travelling gear is provided with the working chamber coordinated with driver plate, the working chamber
Peripheral wall is provided with some work nests, and each work nest is corresponded on driver plate and is provided with driving lever, and the driving lever can transfer with axis is positive and negative
It is movable between the end walls of relevant work groove；
The fixed Hall of falling brake on the axis, and the fixed magnet steel coordinated with the Hall of falling brake on travelling gear；
The extraction coil block includes the fixed coil being fixed on vehicle frame and the rotating coil being fixed on axis, institute
Fixed coil and rotating coil arranged coaxial are stated, the Hall of falling brake electrically connects with the rotating coil, and fixed coil and control
Device processed connects with the power supply of electric bicycle；
When people's ahead-driving bicycle, the first end wall of the driving lever and relevant work groove offsets so that axis drives transmission
Gear and chain wheel synchronously rotate forward；Now the magnet steel is in the first flux of magnetic induction position with the Hall of falling brake；
When stepping bicycle after people, the driving lever offsets from the first end wall activity of corresponding work nest to the second end wall,
So that axis rotates relative to travelling gear, and band movable chain wheel inverts again after certain time-delay；During this, the magnet steel is with falling
Brake Hall is in the second flux of magnetic induction and produces flux change so that the Hall of falling brake sends the signal of falling brake by drawing coil block
Controller is transferred to braking motor.
Preferably, torque sensor described in the utility model includes being fixed on axle sleeve deformable body on axis, it is described fall
Brake Hall, driver plate and rotating coil are fixed with the periphery of the axle sleeve deformable body, and the sensing that axle sleeve deformable body is provided with
Element electrically connects with rotating coil, i.e., torque sensor also depend on fixed coil and rotating coil cooperation realize wireless power and
It is wirelessly transferred.
It is more highly preferred to, is fixed with rotating coil mounting bracket on axle sleeve deformable body described in the utility model, described turn
Moving winding is wrapped in the rotating coil mounting bracket, and fixed coil mounting bracket is fixed with the vehicle frame, described solid
Alignment circle is wrapped in the fixed coil mounting bracket.
Preferably, the utility model also includes the instrument warning lamp or buzzer being connected with controller, when controller is sent
Stop failure alarm signal when, the warning lamp bright light or honey device send alarm.
Further, support to be provided between the second end wall in driving lever described in the utility model and relevant work groove and reset bullet
Spring.
It is more highly preferred to, back-moving spring described in the utility model is variable-pitch spring.
Further, when work nest described in the utility model is unnecessary one, it is distributed along working chamber peripheral wall uniform intervals.
Further, magnet steel quantity described in the utility model be two, be divided into the first different magnet steel of magnetic field intensity and
Second magnet steel, when people's ahead-driving bicycle makes the first end wall of the driving lever and relevant work groove offset, the Hall of falling brake and
First magnet steel is relative, after people stepping bicycle make the driving lever from the first end wall activity of corresponding work nest to the second end wall phase
To when, the Hall of falling brake is relative with the second magnet steel.
Further, bearing is provided with described in the utility model between travelling gear and axis.
The axis being related in the utility model is electric bicycle motor constituent components, and its both ends is the same as conventional skill
Art is equally installed foot-operated by crank.
It is to be appreciated that the torque sensor in the utility model is routine techniques, its main body is an axle sleeve deformable body, should
Axle sleeve deformable body is made of elastomeric material, on the axis of electric bicycle, can be distorted because axis reverses and be produced deformation,
Corresponding sensing element is provided with axle sleeve deformable body, torque signals output can be produced by the small deformation of impression.
And the utility model is the advance signal generating means of electric bicycle Dao Sha mechanisms, for be related to and chain wheel
It is connected through chain and is arranged on wheel（Trailing wheel）Braking mechanism on wheel hub is known technology, its structure, assembly method and action
Principle can participate in prior art, and it is no longer described in detail the utility model.
The utility model has the advantages that：
, can be in the case where the signal generation apparatus of falling brake fails 1. the utility model has the dual defencive function of falling brake
Still send the signal of falling brake braking motor and send down the warning that brake apparatus has damaged, there is provided relatively reliable riding safety is protected
Barrier.
2. the utility model is rationally designed the known signal generation device of falling brake and its axis with torque sensor
Installed with combination, such as travelling gear, driver plate and rotating coil are arranged to the axle sleeve deformable body periphery of torque sensor, essence
Letter structure, the space at the built-in motor position in the middle part of the vehicle frame rationally utilized.
3. the torque sensor in the utility model had both remained original torque signals and transmitted function, and can output is negative
Torque signal coordinates the signal generation device of falling brake to realize the fail safe function of falling brake, and one is dual-purpose, reduces scrap build cost,
Improve practicality.
4. back-moving spring further uses variable-pitch spring in the utility model, on the one hand it, which is acted on, can ensure to stop
Hall resets rapidly, simultaneously, moreover it is possible to ensures that elastic force of the driver plate caused by spring reset is in decrement states, avoids because of bullet
Property power it is too big caused by driver plate（With travelling gear）Abnormal sound and " pinching " phenomenon during collision.
5. as the Hall of falling brake and the extraction coil group of the extraction of torque sensor signal and administration of power supply in the utility model
Part, it is non-contact type signal transmission mechanism using two coil-induced transmission signals of concentric arrangement, the line compared to routine connects
Touch transmission mechanism, be not in the situation that lead line is tangled and damaged, simplify structure, be easy to designer to install same
When, also make it that the overall working sensitivity of the utility model device and reliability are higher.And this non-contact type signal conveyer
Structure need not consider too many factor when topology layout configures, without the mechanical anti-interference circuit extractor using complex precise
Structure, installation rate faster, can greatly improve production efficiency, while save production cost.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Fig. 1 is structure principal section figure of the present utility model；
The axis and driver plate that Fig. 2 is Fig. 1 coordinate cross section view（The Hall of falling brake and magnet steel position during ahead-driving bicycle forward travel state
Put relation）；
The axis and driver plate that Fig. 3 is Fig. 1 coordinate cross section view（The back-pedal bicycle state of falling brake）；
The axis and driver plate that Fig. 4 is Fig. 1 coordinate cross section view（Bicycle free state）.
Wherein：1st, vehicle frame；2nd, axis；3rd, driver plate；3a, driving lever；4th, travelling gear；4a, work nest；A, the first end wall；B、
Second end wall；5th, the Hall of falling brake；6th, the first magnet steel；7th, the second magnet steel；8th, rotating coil；9th, fixed coil；10th, rotating coil is pacified
Fill support；11st, fixed coil mounting bracket；12nd, variable-pitch spring；13rd, bearing；P, torque sensor；14th, axle sleeve deformable body.
Embodiment
Embodiment：With reference to shown in Fig. 1 ~ Fig. 4, to this electricity with the fail safe function of falling brake provided by the utility model
A kind of embodiment of dynamic bicycle middle shaft Dao Sha mechanisms is specifically described as follows：
This electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake that the present embodiment provides mainly fill
Fit on the electric bicycle using built-in motor, by the axis 2 being arranged on vehicle frame 1, the signal of falling brake being arranged on axis 2
Generation device, for receiving the signal with the controller of braking motor and being fixed on axis 2 and be electrically connected with the controller
Torque sensor P is collectively constituted, as shown in figure 1, wherein motor and controller omits, is not drawn into.
Torque sensor P in the present embodiment is routine techniques, and its main body is an axle sleeve deformation of axle sleeve deformable body 14
Body 14 is made of elastomeric material, is fixed on the axis 2 of electric bicycle, can be distorted and is deformed because axis 2 reverses, institute
State in axle sleeve deformable body 14 and be provided with corresponding sensing element, torque signals output can be produced by the small deformation of impression.
From the point of view of Fig. 1 ~ Fig. 4, the concrete structure of the signal generation device of falling brake described in the present embodiment is as follows：
Collectively constituted by travelling gear 4, driver plate 3, the Hall of falling brake 5, magnet steel, extraction coil block and axle tooth 13.
The travelling gear 4 is sheathed on axis 2 by bearing 13, and the travelling gear 4 is used for the same motor that is arranged on and exported
Output gear on axle（It is not drawn into figure）Engagement；Meanwhile coaxially it is fixed with chain wheel on travelling gear 4（It is not drawn into figure）, tooth
Disk is connected through chain with the Dao Sha mechanisms on bicycle rear.
The driver plate 3 is fixed on the axle sleeve deformable body of axis 2, and the travelling gear 4 is provided with the work coordinated with driver plate 3
Make chamber, specifically with reference to shown in Fig. 2 ~ Fig. 4, the working chamber peripheral wall uniform intervals are provided with three work nest 4a, and right on driver plate 3
Answering each work nest 4a to be provided with driving lever 3a, the driving lever 3a can be positive and negative with axis 2 then in relevant work groove 4a end walls, namely
It is movable between first end wall A and the second end wall B, as shown in FIG..And in each driving lever 3a and relevant work groove 4a
Supported between second end wall B and be provided with variable-pitch spring 12.
The periphery of axle sleeve deformable body 14 of axis 2 described in the present embodiment is fixed with the Hall of falling brake 5 by support, sees Fig. 1 institutes
Show, and the fixed magnet steel coordinated with the Hall of falling brake 5 on travelling gear 4；As shown in Fig. 2 ~ Fig. 4, the magnet steel quantity is two, point
For magnetic field intensity different the first magnet steel 6 and the second magnet steel 7, when people's ahead-driving bicycle makes the driving lever 3a and relevant work groove 4a
The first end wall A when offseting, the magnet steel 6 of the Hall of falling brake 5 and first is relative, as shown in Figure 2；Stepping bicycle makes described after people
Driving lever 3a is from corresponding work nest 4a the first end wall A activities to when being offseted with the second end wall B, the magnetic of the Hall of falling brake 5 and second
Steel 7 is relative, as shown in Figure 3.
Draw coil block described in the present embodiment to be made up of the rotating coil 8 and fixed coil 9 of arranged coaxial, the axle
Rotating coil mounting bracket 10 is fixed with set deformable body 14, the rotating coil 8 is wrapped in the rotating coil mounting bracket
On 10, and fixed coil mounting bracket 11 is fixed with the vehicle frame 1, the fixed coil 9 is wrapped in the fixed coil peace
Fill on support 11.The Hall of falling brake 5 electrically connects with the rotating coil 8, and fixed coil 9 and controller and electric bicycle
Power supply connection, as shown in Figure 1.And the sensing element that the axle sleeve deformable body 14 is provided with also electrically connects with rotating coil 8,
I.e. torque sensor also depends on fixed coil 9 and the cooperation of rotating coil 8 is realized wireless power and is wirelessly transferred.
Also include the instrument warning lamp or buzzer being connected with controller in the present embodiment, when controller sends down brake failure
Alarm signal when, the warning lamp bright light or honey device send alarm.
The operation principle of this case mechanism illustrates when finally combining state each to electric bicycle shown in Fig. 2 ~ Fig. 3：
1st, free state
People, which does not step on, pedals electric bicycle, now as shown in Fig. 2 the magnet steel 6 of the Hall of falling brake 5 and first is relative, that is, falls to stop
Hall 5 is in the first flux of magnetic induction position, does not export signal of stopping；And because the axle sleeve deformable body 14 on axis 2 is not also by external force
Act on and deformation, therefore also do not produce（Just）Torque signal exports not to work to motor, motor.
2nd, forward travel state
When people's ahead-driving bicycle, the stress of axis 2, but the driver plate 3 being now fixed on axle sleeve deformable body 14 is because that can not turn
It is dynamic that axle sleeve deformable body 14 is deformed upon, so as to produce torque signals, drive motor to work.As shown in figure 3, now with freely
The situation of state is the same, and the magnet steel 6 of the Hall of falling brake 5 and first is relative, that is, the Hall of falling brake 5 is still in the first flux of magnetic induction
Position, does not export signal of stopping.
3rd, the state of falling brake
When stepping bicycle implements the action of falling brake after people, as shown in figure 4, axis 2 is by the power in contrast to direction of riding, institute
State driving lever 3a to offset to the second end wall B from corresponding work nest 4a the first end wall A activities, the forced compression of variable-pitch spring 12 becomes
Shape.During this, axis 2 drives the displacement of the Hall of falling brake 5 by axle sleeve deformable body 14 thereon, and relative with the second magnet steel 7,
It is in the second flux of magnetic induction position.Because the first magnet steel 6 is different with the magnetic field intensity of the second magnet steel 7, therefore flux change is produced, made
Obtain the Hall of falling brake 5 and send the signal of falling brake and be transferred to controller by drawing coil block with braking motor.
It is above-mentioned in a flash, by the power in contrast to direction of riding, the axle sleeve deformable body 14 exports negative axis 2 to controller
Torque signal, and when the foregoing signal of falling brake is identified by controller, the negative torque signal is not identified, and ought the signal of falling brake
When not identified, the negative torque signal is identified by controller, and with this braking motor, the alarm signal for the failure that is simultaneously emitted by stopping
Number so that warning lamp bright light or honey device send alarm.
4th, free state
When remove to axis 2 apply in contrast to direction of riding power when, variable-pitch spring 12 resets, and drives driver plate 3
Reset, after driver plate 3 resets, resetted with the axle sleeve deformable body 14 being secured to so that being fixed on axle sleeve deformable body 14
The Hall of falling brake 5 resets, and now the Hall of falling brake 5 senses the first magnet steel 6, comes back to the first flux of magnetic induction position, does not export down brake letter
Number.But due to the also non-stress, therefore also do not produce torque signals of axis 2, motor does not work.
For certain above-described embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with this
The people of technology can understand content of the present utility model and implement according to this, and protection model of the present utility model can not be limited with this
Enclose.The modification that all Spirit Essences according to the utility model main technical schemes are done, it should all cover in guarantor of the present utility model
Within the scope of shield.
Claims (10)
1. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake, including it is arranged on vehicle frame（1）On
Axis（2）, be arranged at axis（2）On the signal generation device of falling brake and for receiving the signal with the controller of braking motor,
Work as axis（2）Fall to stop during stress because performing, the signal generation device of falling brake is to the controller output signal of falling brake to brake electricity
Machine, in addition to it is fixed on axis（2）The torque sensor gone up and be electrically connected with the controller（P）；It is characterized in that：The torque passes
Sensor（P）Can be in axis（2）Fall to stop and export negative torque signal to controller during stress because performing, and ought the signal of falling brake be controlled
During device identification processed, the negative torque signal is not identified, and when the signal of falling brake is not identified, the negative torque signal is controlled
Device identifies, and with this braking motor, the alarm signal for the failure that is simultaneously emitted by stopping.
2. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 1, its
It is characterised by that the signal generation device of falling brake includes travelling gear（4）, driver plate（3）, the Hall of falling brake（5）, magnet steel and lead-out wire
Coil assembly：
The travelling gear（4）It is sheathed on axis（2）On, the travelling gear（4）For defeated on motor output shaft with being arranged on
Go out gear engagement；Meanwhile travelling gear（4）On be coaxially fixed with chain wheel, chain wheel through chain with bicycle rear
Dao Sha mechanisms are connected；
The driver plate（3）It is fixed on axis（2）On, the travelling gear（4）It is provided with and driver plate（3）The working chamber of cooperation, institute
State working chamber peripheral wall and be provided with some work nests（4a）, and driver plate（3）Upper each work nest of correspondence（4a）Provided with driving lever（3a）, it is described
Driving lever（3a）Can be with axis（2）It is positive and negative to transfer in relevant work groove（4a）End walls（A、B）Between activity；
The axis（2）The upper fixation Hall of falling brake（5）, and travelling gear（4）Upper fixation and the Hall of falling brake（5）The magnet steel of cooperation；
The extraction coil block includes being fixed on vehicle frame（1）On fixed coil（9）And it is fixed on axis（2）On rotational line
Circle（8）, the fixed coil（9）With rotating coil（8）Arranged coaxial, the Hall of falling brake（5）With the rotating coil（8）Electricity
Connection, and fixed coil（9）It is connected with the power supply of controller and electric bicycle；
When people's ahead-driving bicycle, the driving lever（3a）With relevant work groove（4a）The first end wall（A）Offset so that axis
（2）Drive travelling gear（4）Synchronously rotated forward with chain wheel；The now magnet steel and the Hall of falling brake（5）In the first flux of magnetic induction position；
When stepping bicycle after people, the driving lever（3a）From corresponding work nest（4a）The first end wall（A）Activity to the second end
Wall（B）Offset so that axis（2）With respect to travelling gear（4）Rotate, and band movable chain wheel inverts again after certain time-delay；This mistake
Cheng Zhong, the magnet steel and the Hall of falling brake（5）In the second flux of magnetic induction and produce flux change so that Hall of stopping（5）Send
The signal of falling brake is transferred to controller with braking motor by drawing coil block.
3. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 2, its
It is characterised by the torque sensor（P）Including being fixed on axis（2）On axle sleeve deformable body（14）, the Hall of falling brake（5）、
Driver plate（3）And rotating coil（8）With the axle sleeve deformable body（14）Periphery it is fixed, and axle sleeve deformable body（14）It is provided with
Sensing element and rotating coil（8）Electrical connection.
4. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 3, its
It is characterised by the axle sleeve deformable body（14）On be fixed with rotating coil mounting bracket（10）, the rotating coil（8）It is wrapped in
The rotating coil mounting bracket（10）On, and the vehicle frame（1）On be fixed with fixed coil mounting bracket（11）, the fixation
Coil（9）It is wrapped in the fixed coil mounting bracket（11）On.
5. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 1, its
It is characterised by also including the instrument warning lamp or buzzer being connected with controller, when controller sends the alarm signal for failure of stopping
When, the warning lamp bright light or honey device send alarm.
6. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 2, its
It is characterised by the driving lever（3a）With relevant work groove（4a）The second interior end wall（B）Between support be provided with back-moving spring.
7. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 6, its
It is variable-pitch spring to be characterised by the back-moving spring（12）.
8. a kind of electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake according to claim 2, its
It is characterised by the work nest（4a）At unnecessary one, it is distributed along working chamber peripheral wall uniform intervals.
9. the electrical bicycle middle shaft Dao Sha mechanisms according to claim 2 with the fail safe function of falling brake, its feature
It is two to be the magnet steel quantity, is divided into the first different magnet steel of magnetic field intensity（6）With the second magnet steel（7）, pedaled before people certainly
Driving makes the driving lever（3a）With relevant work groove（4a）The first end wall（A）When offseting, the Hall of falling brake（5）With the first magnetic
Steel（6）Relatively, stepping bicycle makes the driving lever after people（3a）From corresponding work nest（4a）The first end wall（A）Activity is to the
Two end walls（B）When offseting, the Hall of falling brake（5）With the second magnet steel（7）Relatively.
10. the electrical bicycle middle shaft Dao Sha mechanisms according to claim 2 with the fail safe function of falling brake, its feature
It is the travelling gear（4）And axis（2）Between be provided with bearing（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720363249.8U CN206750059U (en) | 2017-04-07 | 2017-04-07 | Electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720363249.8U CN206750059U (en) | 2017-04-07 | 2017-04-07 | Electrical bicycle middle shaft Dao Sha mechanisms with the fail safe function of falling brake |
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| CN206750059U true CN206750059U (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864658A (en) * | 2017-04-07 | 2017-06-20 | 苏州盛亿电机有限公司 | Electrical bicycle middle shaft Dao Sha mechanisms with fail safe function of stopping |
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2017
- 2017-04-07 CN CN201720363249.8U patent/CN206750059U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864658A (en) * | 2017-04-07 | 2017-06-20 | 苏州盛亿电机有限公司 | Electrical bicycle middle shaft Dao Sha mechanisms with fail safe function of stopping |
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