CN109110037B - Device for regulating and controlling motor power according to human treading moment - Google Patents
Device for regulating and controlling motor power according to human treading moment Download PDFInfo
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- CN109110037B CN109110037B CN201710493269.1A CN201710493269A CN109110037B CN 109110037 B CN109110037 B CN 109110037B CN 201710493269 A CN201710493269 A CN 201710493269A CN 109110037 B CN109110037 B CN 109110037B
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- disc
- tooth
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- shaped coding
- driving
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a device for regulating and controlling motor power according to human pedaling torque, which comprises: trample moment and acquire structure and back lid formula measurement and control ware, trample the moment and acquire the structure and include: the inner side of the driving disc is provided with a plurality of first accommodating grooves, the driving disc is fixedly connected with a first tooth-shaped coding disc, and the rotation of the driving disc can drive the first tooth-shaped coding disc to rotate; the driving disc and the driven disc are concentrically and coaxially arranged, a plurality of second accommodating grooves are formed in the outer side of the driven disc, a second tooth-shaped coding disc is fixedly arranged on the inner side of the driven disc, and the second tooth-shaped coding disc can be driven to rotate by the rotation of the driven disc; the first accommodating grooves and the second accommodating grooves are oppositely arranged and equal in number, and a plurality of first cavities are formed between the first accommodating grooves and the second accommodating grooves; a plurality of springs disposed within the first cavity; the rear cover type measuring and controlling device is concentrically, coaxially and oppositely arranged with the driving disk and the driven disk.
Description
Technical Field
The invention relates to an auxiliary power-assisted riding component of a power-assisted bicycle, in particular to a device for regulating and controlling the motor power according to the pedaling moment of a person.
Background
The existing pedal force sensor for electric bicycle is generally provided with three types: one is a middle shaft type, one is a wheel disc type, and the other is a rear hook claw type. The three structures can not control the driving circuit by a motor. Because the specification and style of the bicycle center shaft, the theoretical disc and the rear hook claw must be manufactured according to the installation requirements of the bicycle, and limited by the requirements, the motor control driving circuit is intelligently used as a separating device to be independent from the torque sensor, so the existing available devices are all composed of 2-3 independent parts, the pedaling force acquisition mechanism is installed on the center shaft, the wheel disc or the hook claw, and the motor control driving circuit is connected to the outside through a lead to search the installation position. This results in a significant increase in cost; the whole vehicle assembly process is complicated; the appearance of the whole bicycle cannot be concise and exquisite; the technical indexes and the product reliability are not easy to meet high requirements.
If the pedaling force acquisition device and the motor control driving circuit are integrated into one component, and the standard installation size of the bicycle can be met, the problems can be perfectly solved. However, due to the restriction of the installation space of the bicycle, a simpler and more precise pedaling torque acquisition and measurement and control method needs to be found.
Disclosure of Invention
In view of the above, the present invention provides a device for adjusting and controlling motor power according to human pedaling torque, so as to solve the problems in the prior art.
A first aspect of the present invention provides an apparatus for controlling motor power in accordance with a human pedaling torque, characterized in that: the device for regulating and controlling the motor power according to the pedaling torque of the person comprises: trample moment and acquire structure and back lid formula measurement and control ware, wherein, trample the moment and acquire the structure and include:
the inner side of the driving disc is provided with a plurality of first accommodating grooves, the driving disc is fixedly connected with a first tooth-shaped coding disc, and the first tooth-shaped coding disc can be driven to rotate by the rotation of the driving disc;
the driving disc and the driven disc are concentrically and coaxially mounted, a plurality of second accommodating grooves are formed in the outer side of the driven disc, a second tooth-shaped coding disc is fixedly arranged on the inner side of the driven disc, and the rotation of the driven disc can drive the second tooth-shaped coding disc to rotate;
the first accommodating grooves and the second accommodating grooves are oppositely arranged and equal in number, and a plurality of first cavities are formed between the first accommodating grooves and the second accommodating grooves;
a plurality of springs disposed within the first cavity;
the rear cover type measuring and controlling device is concentrically, coaxially and oppositely arranged with the driving disk and the driven disk.
Preferably, the rear cover type measuring and controlling device is provided with an annular groove, and an annular second cavity is formed between the annular groove of the rear cover type measuring and controlling device and the driven disc;
an annular circuit board is arranged in the second cavity, a first photoelectric sensor and a second photoelectric sensor are welded on the annular circuit board in the radial direction, the first tooth-shaped coding disc is arranged between the first photoelectric sensor correlation grooves, and the second tooth-shaped coding disc is arranged between the second photoelectric sensor correlation grooves;
the annular circuit board is also provided with a motor driving circuit, a waterproof wiring plug for connecting a motor and a waterproof wiring plug for connecting a battery.
Preferably, the first tooth-shaped code disc and the second tooth-shaped code disc are both annular, more than 20 detection points are arranged on the first tooth-shaped code disc and the second tooth-shaped code disc, and the number of the detection points is the same and is uniformly distributed on the annular first tooth-shaped code disc and the annular second tooth-shaped code disc.
Preferably, the driving disc is connected with a bicycle crank, the driven disc is connected with a bicycle wheel disc, and when the driving disc and the driven disc synchronously rotate, the rear cover type measuring and controlling device does not rotate.
A second aspect of the present invention provides a method for adjusting and controlling motor power according to human pedaling torque, wherein the method for adjusting and controlling motor power according to human pedaling torque comprises:
step 1, when the driving disc rotates under an unstressed state, measuring the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc respectively to obtain the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc which are respectively Q1 and Q2, and obtaining the angular velocity ratio F0= Q1/Q2 of the first tooth-shaped coding disc and the second tooth-shaped coding disc;
step 3, when the driving disc rotates under the stress state, the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc are respectively measured, the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc are obtained to be Q1 and Q3 respectively, and the angular velocity ratio FN = Q1/Q3 of the first tooth-shaped coding disc and the second tooth-shaped coding disc is obtained;
and 4, when the driving disc rotates under the stress state, the driving disc is stressed, the spring in the first cavity deforms and pushes the driven disc to rotate, at the moment, the angular speed of the first tooth-shaped coding disc is greater than that of the second tooth-shaped coding disc, namely Q1 & gt Q3, FN = Q1/Q3 & gt 1, the output power P = mFN of the motor at the moment is specified, and m is a preset proportionality coefficient.
In the invention, the treading moment acquisition structure and the rear cover type measuring and controlling device form a whole, the structure is very simple and compact, the driving disc can be connected with a standard bicycle crank pedal, and the driven disc can be connected with a standard bicycle wheel disc chain. The whole device can be conveniently arranged on a standard bicycle middle shaft, so that the power-assisted bicycle is simple and attractive.
Drawings
FIG. 1 is a schematic structural view of an apparatus for controlling motor power according to a pedaling torque of a human according to the present invention;
FIG. 2 is a schematic structural view of a pedaling torque acquiring structure according to the present invention;
FIG. 3 is a schematic view of the inner structure of the driving disk of the present invention;
FIG. 4 is a schematic view of the two sides of the first tooth encoder disk of the present invention;
FIG. 5 is a schematic view of the outer side structure of the driven disk of the present invention;
FIG. 6 is a schematic view of the inside construction of the driven disk of the present invention;
fig. 7 is a schematic structural diagram of the rear cover type measuring and controlling device of the invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description and accompanying drawings that illustrate the invention.
A first aspect of the present invention provides an apparatus for adjusting and controlling motor power according to human pedaling torque, the apparatus for adjusting and controlling motor power according to human pedaling torque comprising: a treading moment acquisition structure and a rear cover type measuring and controlling device.
Further, in one embodiment of the present invention, as shown in fig. 1 and 2, the pedaling torque acquiring structure includes: a driving disk 11, a driven disk 12 and a plurality of springs 13.
Further, as shown in fig. 3, a plurality of first receiving grooves 111 are formed in the inner side of the driving disk 11, the driving disk 11 is fixedly connected to a first tooth-shaped code disk 16, and the rotation of the driving disk 11 can drive the first tooth-shaped code disk 16 to rotate.
Further, as shown in fig. 3 and 4, a plurality of first mounting holes 112 are provided on the driving disk 11, a second mounting hole 161 corresponding to the first mounting hole 112 is provided on the first tooth-shaped encoding disk 16, and the driving disk 11 and the first tooth-shaped encoding disk 16 are fixedly connected through the first mounting hole 112 and the second mounting hole 161.
Further, as shown in fig. 5, 6 and 7, a plurality of second receiving grooves 121 are disposed on an outer side of the driven disc 12, a second tooth-shaped encoder disc 17 is fixedly disposed on an inner side of the driven disc 12, the first receiving grooves 111 and the second receiving grooves 121 are disposed oppositely and equal in number, and a plurality of first cavities 18 are formed between the first receiving grooves 111 and the second receiving grooves 121.
Further, the spring 13 is disposed in the first cavity 18.
Further, the driving disk 11 is connected to a bicycle crank 14, and the driven disk 12 is connected to a standard bicycle wheel 15.
The structure 1 is obtained to drive disc 11, driven disc 12 and spring 13 constitution trample moment, external trample force act on with on the bicycle crank 14 that drive disc 11 is connected, drive disc 11 with bicycle crank 14 fixed connection acts on trample force transmission on the bicycle crank 14 is for drive disc 11, drive disc 11 with driven disc 12 concentric coaxial arrangement, drive disc 11 through set up in drive disc 11 with spring 13 between the driven disc 12 promotes driven disc 12 rotates, the fixed first profile of tooth code dish 16 that is provided with on the drive disc 11, the rotation of drive disc 11 drives first profile of tooth code dish 16 follows drive disc 11 rotates together, driven disc 12's rotation also can drive set up in second profile of tooth code dish 17 on driven disc 12 rotates together.
When a treading force acts on the driving disc 11, the driving disc 11 is driven by the treading force to rotate, and the first tooth-shaped encoding disc 16 fixedly connected with the driving disc 11 rotates along with the driving disc 11, so that an angular velocity is generated between the driving disc 11 and the first tooth-shaped encoding disc 16; meanwhile, the spring 13 disposed in the first cavity 18 is pushed by the driving disk 11 to deform, so as to push the driven disk 12 to rotate along with the driving disk 11, and at this time, the driven disk 12 and the second tooth-shaped encoder disk 17 also generate an angular velocity.
The pedaling torque acquisition structure converts the pedaling force acting on the bicycle crank 14 into two different angular velocities of the first tooth encoder disc 16 and the second tooth encoder disc 17.
Further, as shown in fig. 1 and 7, the rear cover-type measuring and controlling device 2 is provided with an annular groove 21, and an annular second cavity 19 is formed between the annular groove 21 of the rear cover-type measuring and controlling device 2 and the driven disk 12.
An annular circuit board 10 is arranged in the second cavity 19, a first photoelectric sensor 101 and a second photoelectric sensor 102 are welded on the annular circuit board 10 in the radial direction, the first tooth-shaped code 16 is arranged between opposite grooves of the first photoelectric sensor 101, and the second tooth-shaped code 17 is arranged between opposite grooves of the second photoelectric sensor 102.
Further, the rear cover type measuring and controlling device 2 is concentrically and coaxially mounted opposite to the driving disk 11 and the driven disk 12, so as to ensure that the first tooth-shaped code 16 disk is arranged between the opposite slots of the first photoelectric sensor 101, and the second tooth-shaped code disk 17 is arranged between the opposite slots of the second photoelectric sensor 102. When the driving disk 11 and the driven disk 12 rotate synchronously, the rear cover type measuring and controlling device 2 does not rotate, so that the two angular velocity values can be read respectively.
The annular circuit board 10 is further provided with a motor driving circuit and a main control circuit, and the first photoelectric sensor 101, the second photoelectric sensor 102 and the motor driving circuit are electrically connected with the main control circuit respectively. The annular circuit board 10 is also provided with a connecting motor waterproof wiring plug 104 and a connecting battery waterproof wiring plug 105, the motor driving circuit 103 is connected with the motor through the connecting motor waterproof wiring plug 104, the motor is connected with a Hall vehicle speed sensor, and the Hall vehicle speed sensor is connected with the main control circuit and used for detecting the vehicle speed. The rear cover type measuring and controlling device 2 is connected with a vehicle-mounted battery pack through the connecting battery waterproof wiring plug 105, and the vehicle-mounted battery pack is used for supplying power to the motor.
The Hall vehicle speed sensor is used for detecting vehicle speed and transmitting a detected vehicle speed value to the main control circuit, and the main control circuit optimizes the working performance of the motor according to the received vehicle speed value.
Further, the first tooth-shaped code disc 16 and the second tooth-shaped code disc 17 are both annular, more than 20 detection points are arranged on the first tooth-shaped code disc 16 and the second tooth-shaped code disc 17, and the number of the detection points is the same and is uniformly distributed on the annular first tooth-shaped code disc 16 and the annular second tooth-shaped code disc 17.
When the driving disc rotates under the unstressed state, the spring in the first cavity does not deform, the driven disc rotates along with the spring, the first photoelectric sensor and the second photoelectric sensor respectively read the angular speed data of the first tooth-shaped coding disc and the second tooth-shaped coding disc, and the output power of the motor under the state is regulated to be 0.
When the driving disc rotates under the stress state, the first tooth-shaped coding disc is driven to rotate; the spring in the first cavity is stressed to deform and simultaneously pushes the driven plate to rotate, and the rotation of the driven plate drives the second tooth-shaped coding plate arranged on the driven plate to rotate, so that the angular speed of the second tooth-shaped coding plate arranged on the driven plate changes. And correspondingly calculating the magnitude of the treading force according to the magnitude of the angular speed change value, and proportionally controlling the magnitude of the output power of the motor by taking the magnitude of the treading force as a parameter.
In the invention, the treading torque acquisition structure and the rear cover type measuring and controlling device form a whole, the structure is very simple and compact, the driving disc can be connected with a standard bicycle crank pedal, and the driven disc can be connected with a standard bicycle wheel disc chain. The whole device can be conveniently arranged on a standard self-propelled side middle shaft, and the moped is simple and attractive.
A second aspect of the present invention provides a method of regulating motor power according to human pedaling torque, comprising:
step 1, when the driving disc rotates in an unstressed state, measuring the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc respectively to obtain the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc which are respectively Q1 and Q2, and obtaining the angular velocity ratio F0= Q1/Q2 of the first tooth-shaped coding disc and the second tooth-shaped coding disc;
step 3, when the driving disc rotates under a stress state, the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc are respectively measured, the angular velocities of the first tooth-shaped coding disc and the second tooth-shaped coding disc are obtained to be Q1 and Q3 respectively, and the angular velocity ratio FN = Q1/Q3 of the first tooth-shaped coding disc and the second tooth-shaped coding disc is obtained;
and 4, when the driving disc rotates under a stressed state, the driving disc is stressed, the spring in the first cavity deforms and pushes the driven disc to rotate, at the moment, the angular speed of the first tooth-shaped coding disc is greater than that of the second tooth-shaped coding disc, namely Q1 & gt Q3, FN = Q1/Q3 & gt 1, the output power of the motor at the moment is regulated to be P = mFN, and m is a preset proportionality coefficient.
When the driving disc is stressed to be larger, the angular speed difference between the first tooth-shaped encoding disc and the second tooth-shaped encoding disc is larger, the angular speed ratio FN = Q1/Q3 of the first tooth-shaped encoding disc and the second tooth-shaped encoding disc is larger, and the corresponding output power of the motor is larger.
In one embodiment of the present invention, the predetermined scaling factor is 1/2.
In this embodiment, when the driving disk rotates under a stressed state, the driving disk is stressed, the spring in the first cavity deforms and pushes the driven disk to rotate, at this time, the angular velocity of the first tooth-shaped encoding disk is greater than that of the second tooth-shaped encoding disk, that is, Q1 is greater than Q3, FN = Q1/Q3 is greater than 1, and the larger the acting force acting on the driving disk is, the larger the angular velocity difference between the first tooth-shaped encoding disk and the second tooth-shaped encoding disk is, that is, FN = Q1/Q3 is, the larger the output power of the motor is, and the larger the output power of the motor is, that is, P = mFN. The motor acts on the bicycle to relieve the acting force exerted on the driving disk by manpower, FN at the moment is reduced, and the output power of the motor is reduced. The first tooth-shaped coding disc and the second tooth-shaped coding disc are provided with a plurality of detection points, the magnitude of acting force acting on the driving disc is continuously detected, and the magnitude of the output power of the motor is changed according to the magnitude of secondary acting force.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (2)
1. A device for regulating and controlling motor power according to human treading moment is characterized in that: the device for regulating and controlling the motor power according to the pedaling torque of the person comprises: trample moment and acquire structure and back lid formula measurement and control ware, wherein, trample moment and acquire the structure and include:
the inner side of the driving disc is provided with a plurality of first accommodating grooves, the driving disc is fixedly connected with a first tooth-shaped coding disc, and the rotation of the driving disc can drive the first tooth-shaped coding disc to rotate;
the driving disc and the driven disc are concentrically and coaxially arranged, a plurality of second accommodating grooves are formed in the outer side of the driven disc, a second tooth-shaped coding disc is fixedly arranged on the inner side of the driven disc, and the second tooth-shaped coding disc can be driven to rotate by the rotation of the driven disc;
the first accommodating grooves and the second accommodating grooves are oppositely arranged and equal in number, and a plurality of first cavities are formed between the first accommodating grooves and the second accommodating grooves;
a plurality of springs disposed within the first cavity;
the rear cover type measuring and controlling device is concentrically, coaxially and oppositely arranged with the driving disk and the driven disk;
the rear cover type measuring and controlling device is provided with an annular groove, and an annular second cavity is formed between the annular groove of the rear cover type measuring and controlling device and the driven disc;
an annular circuit board is arranged in the second cavity, a first photoelectric sensor and a second photoelectric sensor are welded on the annular circuit board in the radial direction, the first tooth-shaped coding disc is arranged between the first photoelectric sensor correlation grooves, and the second tooth-shaped coding disc is arranged between the second photoelectric sensor correlation grooves;
the annular circuit board is also provided with a motor driving circuit, a waterproof wiring plug connected with a motor and a waterproof wiring plug connected with a battery;
the first tooth-shaped coding disc and the second tooth-shaped coding disc are both annular, more than 20 detection points are arranged on the first tooth-shaped coding disc and the second tooth-shaped coding disc, and the number of the detection points is the same and is uniformly distributed on the annular first tooth-shaped coding disc and the annular second tooth-shaped coding disc.
2. The device for regulating and controlling motor power according to human pedaling torque as claimed in claim 1, wherein: the driving disc is connected with a bicycle crank, the driven disc is connected with a bicycle wheel disc, and when the driving disc and the driven disc synchronously rotate, the rear cover type measuring and controlling device does not rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493269.1A CN109110037B (en) | 2017-06-26 | 2017-06-26 | Device for regulating and controlling motor power according to human treading moment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710493269.1A CN109110037B (en) | 2017-06-26 | 2017-06-26 | Device for regulating and controlling motor power according to human treading moment |
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| Publication Number | Publication Date |
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| CN109110037A CN109110037A (en) | 2019-01-01 |
| CN109110037B true CN109110037B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710493269.1A Active CN109110037B (en) | 2017-06-26 | 2017-06-26 | Device for regulating and controlling motor power according to human treading moment |
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| CN (1) | CN109110037B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021972A1 (en) * | 2007-05-10 | 2008-11-20 | Schaeffler Kg | Drive device with a drive shaft and drive cranks |
| CN102673718A (en) * | 2011-03-09 | 2012-09-19 | 迈为株式会社 | Torque detection device, torque detection device unit, and electric bicycle |
| DE102012105657A1 (en) * | 2012-06-28 | 2014-01-02 | Horst Walter | Electrical propelled bicycle, has electromotor for driving wheel that comprises disk shaped stator and disk shaped rotor with permanent magnets, where stator is rotated at frame part of bicycle |
| CN105667693A (en) * | 2014-12-05 | 2016-06-15 | 株式会社岛野 | Bicycle control apparatus |
-
2017
- 2017-06-26 CN CN201710493269.1A patent/CN109110037B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007021972A1 (en) * | 2007-05-10 | 2008-11-20 | Schaeffler Kg | Drive device with a drive shaft and drive cranks |
| CN102673718A (en) * | 2011-03-09 | 2012-09-19 | 迈为株式会社 | Torque detection device, torque detection device unit, and electric bicycle |
| DE102012105657A1 (en) * | 2012-06-28 | 2014-01-02 | Horst Walter | Electrical propelled bicycle, has electromotor for driving wheel that comprises disk shaped stator and disk shaped rotor with permanent magnets, where stator is rotated at frame part of bicycle |
| CN105667693A (en) * | 2014-12-05 | 2016-06-15 | 株式会社岛野 | Bicycle control apparatus |
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| Publication number | Publication date |
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| CN109110037A (en) | 2019-01-01 |
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Effective date of registration: 20230727 Address after: 300384 Building 5-164, Xingqi No.1 Park, No. 3, Haitai Development 6th Road, Huayuan Industrial Zone (outside the ring), Binhai, Tianjin Patentee after: Tianjin Yiguo Technology Co.,Ltd. Address before: Room 1-409, Building 3, No.1 Huake 3rd Road, Huayuan Industrial Zone, Binhai New Area, Tianjin, 300000 Patentee before: TIANJIN YIDI TECHNOLOGY Co.,Ltd. |
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