Bidirectional and unidirectional transmission integrated motor applied to bicycle

Abstract

The invention relates to the technical field of middle motors, in particular to an integrated motor applied to a bicycle and having a double-unidirectional transmission function. The electromagnetic induction transmission device comprises a motor shell, an electromagnetic induction driving motor arranged in the motor shell, a multi-stage gear transmission mechanism driven by the electromagnetic induction driving motor, and a transmission middle shaft module driven by the multi-stage gear transmission mechanism, the controller assembly is arranged in the motor shell in an unoccupied mode and matched with driving, and the deconcentrator is used for integrated management. The motor has the advantages that the space utilization rate in the motor is improved, the controller and the deconcentrator are integrated in the motor, and the wiring harness interface is also modularly integrated, so that external wiring is simple and attractive, internal important functional parts are all protected by the shell, and the protection effect is optimal.

Description

Technical Field

[0001] The present invention and the technical field of mid-mounted motors particularly relate to an integrated motor with dual unidirectional transmission used on a bicycle. Background Art

[0002] The mid-mounted motor is a motor designed to integrate the car's "power system, transmission system, and braking system".

[0003] Today's society has higher and higher requirements for environmental protection, and pollution-free electric vehicles are becoming more and more popular. The demand for electric vehicle motors is also increasing, and the technical requirements for motors are also increasing. The widely used electric motors are hub-type.

[0004] Prior art, application number: 2022216942421, prior art also adopts multi-stage transmission, but the prior art can only transmit in both directions. When you only want to drive the overall movement through the motor drive, you must drive the pedals to rotate synchronously, and it is impossible to accelerate according to the strength of the pedals.

[0005] Therefore, it is necessary to design an integrated motor with dual unidirectional transmission for use on a bicycle to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide an integrated motor with dual unidirectional transmission for use on a bicycle, so as to overcome the above-mentioned deficiencies in the current prior art.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An integrated motor with dual one-way transmission for use on a bicycle, comprising a motor housing, an electromagnetic induction drive motor placed in the motor housing, a multi-stage gear transmission mechanism driven by the electromagnetic induction drive motor, a transmission middle shaft module driven by the multi-stage gear transmission mechanism, a controller component arranged in the motor housing for matching drive, and a splitter for integrated management, characterized in that: the multi-stage gear transmission mechanism comprises a rotor gear shaft mounted in cooperation with the electromagnetic induction drive motor and driven by the electromagnetic induction drive motor, a secondary gear assembly meshing with the rotor gear shaft, a tertiary gear assembly meshing with the output gear of the secondary gear assembly, and a large gear assembly meshing with the output gear of the tertiary gear assembly;

[0009] The secondary gear assembly includes a secondary input gear meshing with the rotor gear shaft, a secondary output gear embedded in the secondary input gear, and bearings disposed outside the secondary output gear and inside the secondary input gear respectively;

[0010] The three-stage gear assembly includes a three-stage input gear meshing with the two-stage output gear, a three-stage output gear embedded in the three-stage input gear, a one-way needle bearing arranged outside the three-stage input gear and used to limit the rotation direction of the three-stage input gear, and auxiliary transmission bearings arranged on the three-stage input gear and the three-stage output gear;

[0011] The large gear assembly includes an internal spline connector mounted on the transmission center shaft and matched with the spline installation of the transmission center shaft, a wedge-type one-way clutch installed outside the internal spline connector, a large toothed plate mounted outside the wedge-type one-way clutch and meshing with the third-stage output gear, and an oil seal placed at the end of the internal spline connector.

[0012] Preferably, a bearing is mounted on the outer ring of the internal spline connector via a retaining spring and a bearing is placed on the outer ring at the bottom of the internal spline connector.

[0013] Preferably, the outer portion of the large toothed disc is mounted on a toothed disc bracket via a retaining spring, and a toothed disc is fixedly mounted on the toothed disc bracket.

[0014] Preferably, the large gear assembly is mounted on the transmission middle shaft module, and both ends of the transmission middle shaft module are provided with spline grooves for connecting with cranks or pedals, a torque sensor module is installed on the transmission middle shaft module, and a convex block is provided on the transmission middle shaft module, and a spline tooth groove for installing the large gear assembly is also provided at the front end of the convex block.

[0015] The beneficial effects of the present invention are as follows: the technical solution greatly improves the space utilization rate inside the motor, integrates the controller and the splitter inside the motor, and also integrates the wiring harness interface in a modular manner, so that the external wiring is simple and beautiful, and the important internal functional components are all protected by the outer shell, and the protection effect is optimal. A four-stage parallel gear transmission is adopted, so that there is a large reduction ratio of 1:40, which can greatly enhance the motor torque, and two sets of one-way needle bearings are arranged in the multi-stage gear transmission mechanism, so as to realize the rotation of the large toothed disc while the middle shaft does not rotate, and does not affect the normal rotation transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an integrated motor with dual unidirectional transmission applied to a bicycle of the present invention;

[0017] Figure 2 A schematic diagram of a multi-stage gear transmission mechanism of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0018] Figure 3 A cross-sectional view of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0019] Figure 4 A schematic diagram of a two-stage gear assembly of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0020] Figure 5 A schematic diagram of a three-stage gear assembly of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0021] Figure 6 A schematic diagram of a large gear assembly of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0022] Figure 7 A schematic diagram of a transmission middle shaft module of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0023] Figure 8 This is a schematic diagram of the internal structure of an integrated motor with dual unidirectional transmission applied to a bicycle according to the present invention;

[0024] In the figure: 1. electromagnetic induction drive motor; 2. multi-stage gear transmission mechanism; 3. transmission middle shaft module; 4. controller assembly; 5. distributor; 21. rotor gear shaft; 22. secondary gear assembly; 23. tertiary gear assembly; 24. large gear assembly; 221. secondary input gear; 222. secondary output gear; 231. tertiary input gear; 232. tertiary output gear; 233. one-way needle roller bearing; 241. internal spline connector; 242. wedge-type one-way clutch; 243. large toothed disc; 244. oil seal; 245. toothed disc bracket; 246. toothed disc; 31. spline groove; 32. torque sensor module; 33. bump; 34. spline tooth groove. DETAILED DESCRIPTION

[0025] Reference Figures 1 to 8 , an integrated motor with dual unidirectional transmission for use on a bicycle, comprising a motor housing, an electromagnetic induction drive motor 1 placed in the motor housing, a multi-stage gear transmission mechanism 2 driven by the electromagnetic induction drive motor, a transmission middle shaft module 3 driven by the multi-stage gear transmission mechanism, a controller component 4 arranged in the motor housing for free mating driving, and a splitter 5 for integrated management;

[0026] The electromagnetic induction drive motor adopts a smaller inner rotor structure, which is characterized by high power density, small size and high speed. At the same time, the main components are designed to reduce weight, so that the weight of the motor is controlled within 2.5kg, which reduces the burden on the vehicle. The shell is made of high-strength magnesium alloy, and the steel materials such as gears and main shafts are treated to reduce weight without affecting the strength.

[0027] The multi-stage gear transmission mechanism 2 includes a rotor gear shaft 21 installed in conjunction with an electromagnetic induction drive motor and driven by the electromagnetic induction drive motor, a secondary gear assembly 22 meshing with the rotor gear shaft, a tertiary gear assembly 23 meshing with the output gear of the secondary gear assembly, and a large gear assembly 24 meshing with the output gear of the tertiary gear assembly;

[0028] The secondary gear assembly 22 includes a secondary input gear 221 meshed with the rotor gear shaft, a secondary output gear 222 embedded in the secondary input gear, and bearings disposed outside the secondary output gear and inside the secondary input gear respectively;

[0029] The three-stage gear assembly 23 includes a three-stage input gear 231 meshing with the two-stage output gear, a three-stage output gear 232 embedded in the three-stage input gear, a one-way needle bearing 233 sleeved outside the three-stage input gear 232, and auxiliary transmission bearings arranged on the three-stage input gear and the three-stage output gear; the three-stage input gear 231 is placed outside the one-way needle bearing 233.

[0030] The large gear assembly 24 includes an internal spline connector 241 which is sleeved on the transmission shaft and is installed with a spline to match the transmission shaft, a wedge-type one-way clutch 242 installed outside the internal spline connector, a large toothed disc 243 which is sleeved outside the wedge-type one-way clutch and meshed with the third-stage output gear, and an oil seal 244 placed at the end of the internal spline connector; in order not to affect the normal transmission of the large gear assembly, a bearing is installed on the outer ring of the internal spline connector through a retaining spring and a bearing is placed on the outer ring of the bottom of the internal spline connector; the wedge-type one-way clutch has a one-way transmission effect, thereby effectively limiting the second and third-stage gears from affecting the large gear assembly, and the large gear can be normally transmitted to the second and third-stage gears.

[0031] The large toothed disc is mounted on a toothed disc bracket 245 via a retaining spring, and a toothed disc 246 is fixedly mounted on the toothed disc bracket. The outer teeth of the toothed disc are used to match the chain for installation.

[0032] The large gear assembly is mounted on the transmission middle shaft module 3, and both ends of the transmission middle shaft module are provided with spline grooves 31 for connecting with cranks or pedals. A torque sensor module 32 is installed on the transmission middle shaft module, and a protrusion 33 is opened on the transmission middle shaft module to limit the installation of the torque sensor module and to cooperate with the installation of the large gear assembly. A spline tooth groove 34 for installing the large gear assembly is also provided at the front end of the protrusion; a four-stage parallel gear transmission is adopted, so that there is a large reduction ratio, the reduction ratio is 1:40, which can greatly enhance the motor torque.

[0033] When the two sides of the transmission center shaft are connected to the pedals and the foot is stepped on to start, the center shaft will rotate, and the torque sensor on the transmission center shaft will sense the signal, start the electromagnetic induction drive motor, and achieve precise control. A large gear assembly is installed on the transmission center shaft. The rotation of the large gear assembly drives the transmission center shaft to rotate, so that the large gear plate will rotate and drive the self-propelled chain to rotate;

[0034] When pedaling, the transmission shaft rotates and the large gear plate rotates synchronously, but the large gear assembly is meshed with the secondary gear assembly and the tertiary gear assembly to achieve step-by-step meshing transmission, which is to save effort when pedaling and also for precise control. A one-way needle bearing is installed in the tertiary gear assembly so that it will not be reversed and transmitted to the secondary gear assembly. When the large gear plate rotates, other gears will not rotate.

[0035] If the motor needs to be driven, the motor starts working, and the gear transmission direction changes from the rotor gear to the last large toothed disc. At this time, the large toothed disc needs to output continuously, but the pedal does not need to rotate continuously, that is, the middle shaft can remain stationary, so a wedge-type one-way clutch is used between the middle shaft and the large toothed disc, so as to realize the rotation of the large toothed disc without rotating the middle shaft.

[0036] The benefits of the present invention are that the technical solution greatly improves the space utilization rate inside the motor, integrates the controller and the splitter inside the motor, and also integrates the wiring harness interface in a modular manner, so that the external wiring is simple and beautiful, and the important internal functional components are all protected by the outer shell, and the protection effect is optimal. It adopts a four-stage parallel gear transmission, so that there is a large reduction ratio of 1:40, which can greatly enhance the motor torque, and a group of one-way needle bearings and a wedge-type one-way clutch are arranged in the multi-stage gear transmission mechanism, so as to realize the rotation of the large toothed disc without rotating the middle shaft, and does not affect the normal rotation transmission.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An integrated motor with dual unidirectional transmission for use on a bicycle, comprising a motor housing, an electromagnetic induction drive motor disposed in the motor housing, a multi-stage gear transmission mechanism driven by the electromagnetic induction drive motor, a transmission middle shaft module driven by the multi-stage gear transmission mechanism, a controller component disposed in the motor housing for free-matching driving, and a splitter for integrated management, characterized in that: The multi-stage gear transmission mechanism comprises a rotor gear shaft installed in conjunction with an electromagnetic induction drive motor and driven by the electromagnetic induction drive motor, a secondary gear assembly meshing with the rotor gear shaft, a tertiary gear assembly meshing with the output gear of the secondary gear assembly, and a large gear assembly meshing with the output gear of the tertiary gear assembly; The secondary gear assembly includes a secondary input gear meshing with the rotor gear shaft, a secondary output gear embedded in the secondary input gear, and bearings disposed outside the secondary output gear and inside the secondary input gear respectively; The three-stage gear assembly includes a three-stage input gear meshing with the two-stage output gear, a three-stage output gear embedded in the three-stage input gear, a one-way needle bearing arranged outside the three-stage input gear and used to limit the rotation direction of the three-stage input gear, and auxiliary transmission bearings arranged on the three-stage input gear and the three-stage output gear; The large gear assembly includes an internal spline connector mounted on the transmission center shaft and matched with the spline installation of the transmission center shaft, a wedge-type one-way clutch installed outside the internal spline connector, a large toothed plate mounted outside the wedge-type one-way clutch and meshing with the third-stage output gear, and an oil seal placed at the end of the internal spline connector.

2. The integrated motor with dual unidirectional transmission for use on a bicycle according to claim 1, characterized in that: A bearing is installed on the outer ring of the inner spline connector through a retaining spring and a bearing is placed on the outer ring of the bottom of the inner spline connector.

3. The integrated motor with dual unidirectional transmission for use on a bicycle according to claim 1, characterized in that: The outer portion of the large toothed disc is mounted on a toothed disc bracket via a retaining spring, and a toothed disc is fixedly mounted on the toothed disc bracket.

4. The integrated motor with dual unidirectional transmission for use on a bicycle according to claim 1, characterized in that: The large gear assembly is mounted on the transmission middle shaft module, and both ends of the transmission middle shaft module are provided with spline grooves for connecting with cranks or pedals. A torque sensor module is installed on the transmission middle shaft module, and a protrusion is opened on the transmission middle shaft module. A spline tooth groove for installing the large gear assembly is also provided at the front end of the protrusion.

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