WO2018072277A1

WO2018072277A1 - Integrated electric booster device for bicycle

Info

Publication number: WO2018072277A1
Application number: PCT/CN2016/109217
Authority: WO
Inventors: 廖启新; 徐东升
Original assignee: 无锡富乐力科技有限公司
Priority date: 2016-10-18
Filing date: 2016-12-09
Publication date: 2018-04-26
Also published as: CN106364622B; CN106364622A

Abstract

An integrated electric booster device for a bicycle, comprising a hub motor assembly, a battery assembly (30) and a main control circuit board (40); the hub motor assembly and the main control circuit board (40) are electrically connected to the battery assembly (30); also comprised is a housing (10), the housing (10) being provided with a central accommodating cavity (11); both the battery assembly (30) and the main control circuit board (40) are accommodated in the central accommodating cavity (11); left and right axial sides of the central accommodating cavity (11) are sealed by means of a left side end plate (12) and a right side cover plate (13) respectively; an outer circumferential surface of the housing (10) is connected to the rear wheel of a bicycle by means of a spoke, and the hub motor assembly is integrally assembled inside of the battery assembly (30); left and right axial ends of the hub motor assembly are provided with a left support shaft (50) and a right support shaft (60) respectively; the left support shaft (50) and the right support shaft (60) axially penetrate through the left side end plate (12) and the right side cover plate (13) respectively and then are connected to a rear wheel bracket of the bicycle by means of bearings; and a flywheel (70) is mounted on an axially extending end of the right support shaft (60). The present invention may solve the problem wherein the structure of a separated electric boosting device of an existing electric booster bicycle is bulky and does not fit the requirements for installation or modification of an electric booster system of an ordinary bicycle.

Description

Title of Invention: An Integrated Electric Power Aid Device for Bicycles

[0001] The present invention relates to the field of electric assist bicycles, and more particularly to an integrated electric power assisting device for bicycles.

Background technique

[0002] As the economy grows, the demand for travel of urban residents continues to increase. At the same time, cars are criticized for their occupation of road resources and pollution, and people are beginning to look for more suitable travel tools for cities. In Germany, the Netherlands, Japan and other countries, electric bicycles have become a new trend in urban travel with their fast, convenient and labor-saving experience. The power-assisted bicycle is equipped with a smart power system that can read the driving intentions, automatically judge the road conditions, and provide auxiliary power for the user. More and more consumers are beginning to consider new travel tools. They value travel efficiency, focus on aesthetic taste, and pursue green environmental protection. At present, electric bicycles that are widely welcomed abroad have also begun to enter their fields of vision and become a new demand in the Chinese bicycle market.

[0003] The current electric assist bicycle motor assembly, the battery assembly, the controller and the cadence sensor are of a separate design, and in particular, the larger battery components are mostly assembled in the battery compartment of the bicycle pedal or assembled on the frame. On the one hand, the overall structure of the electric assist bicycle is heavy and the transportation logistics cost is high. On the other hand, since the installation of the battery assembly requires the corresponding frame structure to be adapted, it cannot adapt to the installation of the electric assist system of the existing ordinary bicycle or Modification requirements.

technical problem

[0004] In view of the above problems, the present invention provides an integrated electric power assisting device for a bicycle, which can solve the cumbersome structure of the existing electric power assisting device, and is not suitable for the existing ordinary bicycle electric power. The requirements for system installation or modification are compact and occupy small space, which facilitates overall logistics transportation.

Problem solution

Technical solution

[0005] An integrated electric power assisting device for a bicycle, comprising a hub motor assembly, a battery assembly, a main control circuit board, the hub motor assembly, the main control circuit board and the battery assembly are electrically connected, and further comprising a housing The outer casing is provided with a central receiving cavity, and the battery assembly and the main control circuit board are accommodated in the central receiving cavity, and the left and right sides of the central receiving cavity respectively pass through the left end plate and the right side. The outer peripheral surface of the outer casing is connected to the rear wheel of the bicycle through a spoke. The hub motor assembly is integrally mounted inside the battery assembly, and the left and right ends of the hub motor assembly are respectively equipped with a left end. a support shaft and a right support shaft, wherein the left support shaft and the right support shaft extend axially through the left end plate and the right side cover, respectively, and are connected to the bicycle rear wheel bracket through a bearing, and the axial extension of the right support shaft A flywheel is mounted on the outlet.

[0006] A further technical solution thereof is:

[0007] The battery assembly has a circular ring structure, and an inner ring cavity is disposed in the battery assembly, the hub motor assembly is integrally mounted in the inner ring cavity, and the inner ring surface of the inner ring cavity is spaced apart There are multiple axial card slots;

[0008] The flywheel is equipped with two Hall sensors, and the two Hall sensors are electrically connected to the main control circuit board, and the flywheel is coupled with the bicycle chain;

[0009] the left end plate is disposed integrally with the outer casing;

[0010] The hub motor assembly includes a driving motor and a motor housing, the driving motor is assembled in the motor housing, and a plurality of axial parallel strips are disposed on an outer circumferential surface of the motor housing. An axial slot corresponding to the card strip is disposed on a circumferential surface of the inner ring of the battery assembly, and the card strip is engaged in the axial card slot

[0011] The driving motor further includes a planetary speed reducing mechanism and an overrunning clutch, the planetary speed reducing mechanism includes three planetary gears, the three planetary gears are double gears, and the output shaft of the driving motor is provided with teeth a three planetary gear shafts are disposed on the left end surface of the driving motor around the outer circumference of the output shaft, and the three planetary gears are respectively mounted on the three planetary gear shafts and the three planetary gears The outer large tooth surface is meshed with the tooth, the overrunning clutch is provided with an inner ring gear, and the inner ring gear is meshed with the inner small tooth surface of the three planetary gears, and the overrunning clutch and the outer clutch The left end plate is fixed;

[0012] The right end of the left support shaft is fixed with a flange, and the left end surface of the drive motor is uniformly provided with three bosses around the outer circumference of the output shaft, and three of the bosses are The three planetary gear shafts are evenly spaced, and the flange is fixed to the three bosses;

[0013] a left side end of the right support shaft is provided with a connection flange, and the main control circuit board is set on the right support shaft And being fixed to the connecting flange, the right end surface of the driving motor is provided with a cavity, and the connecting flange is embedded in the cavity and fixed to the driving motor.

Advantageous effects of the invention

Beneficial effect

[0014] The beneficial effects of the present invention are: It adopts a circular battery assembly so that the battery assembly, the hub motor assembly and the main control circuit board can be integrated into the outer casing, thereby effectively simplifying the structure of the entire electric power assisting device. The utility model has the advantages of narrowing the occupied space and facilitating the logistics transportation of the whole vehicle; in addition, since it is an integrated structure, when the device of the present invention is applied to the existing ordinary bicycle, it is not necessary to carry out large-scale transformation of the overall frame structure of the original bicycle, so It can meet the user's requirements for the installation of electric assist system for existing ordinary bicycles.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of the present invention (full cross-sectional view);

2 is an exploded view of the present invention;

Figure 3 is a left side view of the outer casing of the present invention;

4 is a schematic structural view of a drive motor of the present invention;

5 is a schematic structural view of a battery assembly of the present invention.

[0020] Reference numerals: 10, the outer casing; 11, the central receiving cavity; 12, the left end plate; 13, the right side cover; 21, the drive motor; 211, the output shaft; 212, the boss; 213, the cavity 22, motor housing; 221, card; 23, planetary reduction mechanism; 231a, first planetary gear; 231b, second planetary gear; 231c, third planetary gear; 232a, first planetary gear shaft; 232b, Second planetary gear shaft; 232c, third planetary gear shaft; 24, overrunning clutch; 241, inner ring gear; 30, battery assembly; 31, inner ring cavity; 32, axial card slot; 40, main control circuit board 50, left support shaft; 51, flange; 60, right support shaft; 61, connecting flange; 70, flywheel.

Embodiments of the invention

[0021] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, the integrated electric power assisting device for bicycles of this embodiment The housing motor assembly, the battery assembly 30, the main control circuit board 40, the hub motor assembly, the main control circuit board 40 and the battery assembly 30 are electrically connected, and further includes a housing 10 having a central receiving cavity 11 The battery assembly 30 and the main control circuit board 40 are housed in the central accommodating cavity 11, and the left and right sides of the central accommodating cavity 11 are respectively sealed by the left end plate 12 and the right side cover 13, and the outer circumference of the outer casing 10 is closed. The surface is connected to the rear wheel of the bicycle through a spoke. The hub motor assembly is integrally assembled inside the battery assembly 30. The left and right ends of the hub motor assembly are respectively equipped with a left support shaft 50, a right support shaft 60, a left support shaft 50, and a right support. The shaft 60 is axially penetrated through the left end plate 12 and the right side cover 13 and then connected to the bicycle rear wheel bracket through a bearing, and the flywheel 70 is mounted on the axially extended end of the right support shaft 60.

[0022] The battery assembly 30 has a circular ring structure. The battery assembly 30 is provided with an inner ring cavity 31. The hub motor assembly is integrally mounted in the inner ring cavity 31, and the inner ring surface of the inner ring cavity 31 is spaced apart. A plurality of axial slots 32.

[0023] The flywheel 70 is equipped with two Hall sensors, and the two Hall sensors are electrically connected to the main control circuit board 40, and the flywheel 70 is coupled with the bicycle chain.

[0024] The left end plate 12 is disposed to be integral with the outer casing 10.

[0025] The hub motor assembly includes a drive motor 21 and a motor housing 22, the drive motor 21 is mounted in the motor housing 22, and the outer peripheral surface of the motor housing 22 is provided with a plurality of axial parallel strips 221, the battery assembly The inner circumferential surface of the inner ring 30 is provided with an axial locking groove 32 corresponding to the clamping strip 221, and the clamping strip 221 is engaged in the axial clamping groove 32.

The drive motor 21 further includes a planetary reduction mechanism 23 and three clutch gears. The planetary reduction mechanism 23 includes three planetary gears, each of which is a double gear. The output shaft 211 of the drive motor 21 is provided with teeth. On the left end surface of the driving motor 21, three planetary gear shafts are evenly distributed around the outer circumference of the output shaft 211. The three planetary gears are respectively mounted on the three planetary gear shafts, and the outer large tooth surfaces of the three planetary gears mesh with the teeth. The overrunning clutch 24 is provided with an inner ring gear 241, and the inner ring gear 241 and the inner small tooth surface of the three planetary gears mesh with the transmission, and the overrunning clutch 24 is fixed to the left end plate 12.

[0027] The right end of the left support shaft 50 is fixed with a flange 51, and the left end surface of the drive motor 21 is provided with three bosses 212 on the outer circumference of the output shaft 211, and three bosses 212 and three The planet gear shafts are evenly spaced, and the flange 51 is fixed to the three bosses 212.

[0028] The left end of the right support shaft 60 is provided with a connecting flange 61. The main control circuit board 40 is fitted on the right support shaft 60 and fixed to the connecting flange 61. The right end surface of the driving motor 21 is concave. The cavity 213, the connecting flange 61 is embedded in the cavity 213 and fixed to the drive motor 21. [0029] The specific structure is as follows:

[0030] As shown in FIG. 1 and FIG. 2, an integrated electric power assisting device for a bicycle includes a housing 10, a hub motor assembly motor housing 22, a battery assembly 30, and a main control circuit board 40. The motor assembly 22 of the hub motor assembly and the main control circuit board 40 are electrically connected to the battery assembly 30. The housing 10 is provided with a central receiving cavity 11 in which the battery assembly 30 is annular, and the battery assembly 30 and the main control circuit board 40 are uniformly accommodated. The left and right sides of the central accommodating cavity 11 are respectively sealed by the left end plate 12 and the right side cover 13 , wherein the left end plate 12 can be disposed integrally with the outer casing 10; The peripheral surface of the outer ring is connected to the rear wheel of the bicycle through a spoke. The motor assembly 22 of the hub motor assembly is integrally assembled into the inner ring cavity 31 of the battery assembly 30, wherein the motor module 22 of the hub motor assembly includes a drive motor 21, The motor housing 22, the planetary reduction mechanism 23 and the overrunning clutch 24, the driving motor 21 is mounted in the motor housing 22, and the outer peripheral surface of the motor housing 22 is provided with a plurality of axially parallel strips 221, the battery assembly 30 on the inner circumference of the inner ring with the card 221 - a corresponding axial slot 32, the strap 221 is engaged in the axial slot 32; the planetary reduction mechanism 23 includes three planetary gears (the first planetary gear 231a, the second planetary gear 231b, the third planetary gear 231c), the three planetary gears (the first planetary gear 231a, the second planetary gear 231b, and the third planetary gear 231c) are all double gears, and the output shaft 211 of the drive motor 21 is provided with teeth (tooth in the drawing) In the left end surface of the drive motor 21, three planetary gear shafts (the first planetary gear shaft 232a, the second planetary gear shaft 232b, and the third planetary gear shaft 232c) are evenly distributed around the outer circumference of the output shaft 211. Planetary gears (the first planetary gears 231a. The second planetary gears 231b and the third planetary gears 231c are respectively mounted on the three planetary gear shafts 23 la, 231b. 231c and the outer large tooth faces of the three planetary gears mesh with the teeth The transmission, the overrunning clutch 24 is provided with an inner ring gear 241, and the inner ring gear 241 is meshed with the inner small tooth surface of the three planetary gears. The overrunning clutch 24 is fixed to the left end plate 12 by screws; the motor module of the hub motor assembly The left and right ends of the body 22 are respectively equipped with a left support shaft 50 and a right support shaft 60. The right end of the left support shaft 50 is fixed with a flange 51, and the left end surface of the drive motor 21 surrounds the output shaft. The outer circumference of the 211 is uniformly provided with three bosses 212, and the three bosses 212 are evenly spaced from the three planetary gear shafts 232a, 232b. 232c, and the flange 51 is fixed to the three bosses 212; the right support shaft 60 The left end portion is provided with a connecting flange 61. The main control circuit board 40 is set on the right supporting shaft 60 and fixed to the connecting flange 61. The right end surface of the driving motor 21 is provided with a cavity 213, and the connecting flange 61 is embedded. The inside of the cavity 213 is fixed to the driving motor 21; the left supporting shaft 50 and the right supporting shaft 60 are axially penetrated through the left end plate 12 and the right side cover 13 respectively, and then connected to the bicycle rear wheel bracket through bearings, respectively. A flywheel 70 is mounted on the axially extending end of the right support shaft 60. The flywheel 70 is equipped with two Hall sensors for collecting the speed signal, and the two Hall sensors are respectively electrically connected to the main control circuit board 40, the flywheel 70 is coupled with the bicycle chain for transmission.

[0031] The device of the present invention is assembled to the bicycle. When the rider pedals on the pedal, the flywheel 70 of the bicycle chain is rotated by the bicycle chain, and the two Hall sensors installed in the flywheel 70 respectively sample the two sets of rotational speed signals. After the two sets of speed signals are sent to the main control circuit board 40 in the built-in housing, the main control unit on the main control circuit board 40 calculates the current pedaling frequency of the bicycle pedal according to the two sets of rotational speed signals, and is composed of two sets of signals. The order determines whether the bicycle pedal is in the state of being stepped on or stepping on. If it is in the state of stepping down, the output power of the control motor is negative, that is, the bicycle speed reduction function is realized, and if it is in the state of being stepped on, according to the speed of the vehicle and The relevant input signal such as the vehicle acceleration value drives the motor 21 to output the corresponding power, thereby achieving the electric assist effect.

[0032] During the traveling of the bicycle, the driving motor 21 rotates, and the output shaft 211 of the driving motor 21 is provided with teeth on the outer large tooth surface of the three planetary gears, and the inner small tooth surface of the three planetary gears is The inner ring gear 241 of the overrunning clutch 24 is threadedly engaged. Since the overrunning clutch 24 is fixed to the left end plate 12 of the outer casing 10 by screws, the left end plate 12 and the outer casing 10 are integrally formed, that is, the overrunning clutch 24 and the outer casing 10 are relatively fixed. The outer casing 10 is driven by the transmission overrunning clutch 24 to perform corresponding rotation, and the outer casing 10 transmits electric power to the bicycle through the bicycle spokes, thereby realizing an electric power boosting effect.

Claims

Claim

[Answer 1] An integrated electric power assisting device for a bicycle, comprising a hub motor assembly, a battery assembly (30), a main control circuit board (40), the hub motor assembly, and a main control circuit board (40) Electrically connected to the battery assembly (30), characterized in that it further comprises a casing (10), the casing (10) is provided with a central receiving cavity (11), the battery component (30), and a main control circuit board ( 40) uniformly accommodated in the central receiving cavity (11), the left and right sides of the central receiving cavity (11) are respectively sealed by the left end plate (12) and the right side cover (13), The outer circumferential surface of the outer casing (10) is connected to the rear wheel of the bicycle through a spoke. The hub motor assembly is integrally mounted inside the battery assembly (30), and the left and right ends of the hub motor assembly are respectively assembled The left support shaft (50) and the right support shaft (60), the left support shaft (50) and the right support shaft (60) respectively axially penetrate the left end plate (12) and the right side cover (13) After being connected to the bicycle rear wheel bracket through the bearing, the right Support shaft

A flywheel (70) is mounted on the axially projecting end of (60).

[Claim 2] An integrated electric power assisting device for a bicycle according to claim 1, wherein: the battery assembly (30) has a circular ring structure, and the battery assembly (30) is disposed therein. a ring cavity (31), the hub motor assembly is integrally mounted in the inner ring cavity (31), and the inner ring surface of the inner ring cavity (31) is spaced apart from the plurality of axial slots (32) .

[Claim 3] An integrated electric power assist device for a bicycle according to claim 1, wherein: the flywheel (70) is equipped with two Hall sensors, and the two Hall sensors The main control circuit board (40) is electrically connected to the main control circuit board (40), and the flywheel (70) is coupled with the bicycle chain.

[Claim 4] An integrated electric power assisting device for a bicycle according to claim 1, wherein: the left end plate (12) is disposed to be integral with the outer casing (10).

[Claim 5] An integrated electric power assist device for a bicycle according to claim 1, wherein: the hub motor assembly includes a drive motor (21) and a motor housing (22), a driving motor (21) is mounted in the motor housing (22), and an outer circumferential surface of the motor housing (22) is provided with a plurality of axial parallel strips (221), and the battery assembly (30) The inner circumferential surface of the inner ring is provided with an axial slot (32) corresponding to the card strip (221). The clip (221) is engaged in the axial slot (32).

[Claim 6] An integrated electric power assist device for a bicycle according to claim 5, wherein: the drive motor (21) further includes a planetary reduction mechanism (23) and an overrunning clutch (24). The planetary reduction mechanism (23) includes three planetary gears, each of which is a double gear, and an output shaft (211) of the drive motor (21) is provided with teeth, and the drive motor ( 21) is disposed on the left end surface of the left end of the output shaft (211) with three planetary gear shafts, and the three planetary gears are respectively mounted on the three planetary gear shafts and the three planetary gears The outer large tooth surface is meshed with the tooth, and the overrunning clutch (24) is provided with an inner ring gear (241), and the inner ring gear (241) is meshed with the inner small tooth surface of the three planetary gears. At the same time, the overrunning clutch (24) is fixed to the left end plate (12).

[Claim 7] An integrated electric power assisting device for a bicycle according to claim 1, wherein: the right end of the left support shaft (50) is fixed with a flange (51) The left end surface of the driving motor (21) is provided with three bosses (212) uniformly around the outer circumference of the output shaft (211), and three of the bosses (212) and the three planetary gear shafts Evenly spaced, the flange (51) is fixed to the three bosses (212).

[Claim 8] An integrated electric power assisting device for a bicycle according to claim 1, wherein: the left end of the right support shaft (60) is provided with a connecting flange (61), The main control circuit board (40) is sleeved on the right support shaft (60) and fixed to the connection flange (61), and the right end surface of the drive motor (21) is provided with a cavity (213). The connecting flange (61) is embedded in the cavity (213) and fixed to the driving motor (21)