CN117508444A

CN117508444A - Five-way fluted disc type centrally-mounted power assisting bicycle power device

Info

Publication number: CN117508444A
Application number: CN202311671529.1A
Authority: CN
Inventors: 卢稳峰
Original assignee: Shenzhen Hongrui Xingchi Technology Co ltd
Current assignee: Shenzhen Hongrui Xingchi Technology Co ltd
Priority date: 2023-12-07
Filing date: 2023-12-07
Publication date: 2024-02-06

Abstract

The five-way fluted disc type middle-set power assisting bicycle power device comprises a power mechanism and a toothed disc, and is characterized in that the toothed disc comprises a fixed part and a rotating part, a bearing is arranged between the fixed part and the rotating part, so that the rotating part rotates on the fixed part, and a cavity is formed after the fixed part is connected with the rotating part; the fixing part is arranged on one side of the five-way pipe of the bicycle; teeth are arranged on the outer wall of the rotating part; the power device is positioned in the cavity and comprises a stator and a rotor; the stator is arranged on the fixed part; the rotor is inlaid on the rotating part, and the rotor is arranged around the stator for a circle; the invention can be adapted to most of the frames in the market, has good adaptability, is beneficial to the stability and miniaturization of the whole structure, reduces the interference to the structure of the bicycle, better keeps the original appearance and weight balance of the bicycle, and can improve the torque of the toothed disc by the built-in power assisting system, so that riding is easier.

Description

Five-way fluted disc type centrally-mounted power assisting bicycle power device

Technical Field

The invention relates to the technical field of power-assisted bicycles, in particular to a five-way fluted disc type middle-set power-assisted bicycle power device.

Background

In recent years, mountain area booster bicycles are rapidly increased in consumer markets, booster bicycles are mainly driven in an auxiliary mode by a driving motor, motors are usually added to frames, rear wheels or middle shafts of the existing booster bicycles, the existing motor structures are wide, the frames are usually required to be modified or special frames are adopted for installation, the complexity of installation is increased, the production cost is increased, the existing conventional bicycles are large in storage quantity, the common standard is basically adopted for the middle cylinder size of a five-way pipe of the conventional bicycles, and therefore the improvement difficulty of the conventional bicycles is high, and the popularization of an electric booster mode is not facilitated.

Disclosure of Invention

The invention aims to solve the technical problem of providing a five-way fluted disc type centrally-mounted power assisting bicycle power device which can effectively solve the problems in the background art.

In order to solve the problems, the invention adopts the following technical scheme: the five-way fluted disc type middle-set power assisting bicycle power device comprises a power mechanism and a toothed disc, and is characterized in that the toothed disc comprises a fixed part and a rotating part, a bearing is arranged between the fixed part and the rotating part, so that the rotating part rotates on the fixed part, and a cavity is formed after the fixed part is connected with the rotating part; the fixing part is arranged on one side of the five-way pipe of the bicycle; teeth are arranged on the outer wall of the rotating part; the power device is positioned in the cavity and comprises a stator and a rotor; the stator is arranged on the fixed part; the rotor is inlaid on the rotating part, and the rotor is arranged around the stator for a circle.

As a further preferable mode of the invention, the rotating part is provided with a bracket flange; the support flange is connected with the rotating part through bolts, and the support flange is connected with a center shaft of the bicycle through a bearing.

As a further preferable scheme of the invention, the chamber is also provided with a power assisting mechanism, and the power assisting mechanism comprises a sun gear, a planet carrier and an inner gear ring; the sun gear is clamped on the outer wall of the bracket flange; the inner gear ring is inlaid on the fixed part and positioned at the inner side of the stator; the outer wall of the planet carrier is provided with a bearing which is connected with the fixing part, and the inner wall of the planet carrier is sleeved with the support flange; the planet wheel is arranged on the planet carrier, and the planet wheel is respectively connected with the sun wheel and the inner gear ring in a meshed manner.

As a further preferable scheme of the invention, a notch is arranged at the inner wall of the planet carrier; the ball and the spring are arranged in the notch, and the spring is positioned on one side of the ball; the outer wall of the bracket flange is in sliding connection with the ball.

As a further preferable scheme of the invention, the number of the notches, the balls and the springs is 3, and the combination is corresponding to the number of the notches, the balls and the springs and are arranged at the inner ring of the planet carrier at intervals to form the one-way clutch.

As a further preferable scheme of the invention, the middle shaft of the bicycle is a moment sensing middle shaft; the moment sensing center shaft is arranged in a five-way pipe of the bicycle; the moment sensing center shaft comprises a first shaft barrel and a second shaft barrel; the second shaft cylinder is sleeved in the first shaft cylinder through a spline; the outer wall of the second shaft cylinder is provided with a bearing which is sleeved with the bracket flange; the outer wall of the first shaft cylinder is provided with a one-way bearing which is sleeved with the support flange.

As a further preferable scheme of the invention, the moment sensing center shaft further comprises a center shaft sleeve, and the outer walls of the first shaft cylinder and the bracket flange are respectively provided with a bearing connected with the inner wall of the center shaft sleeve. As a further preferable scheme of the invention, the middle shaft sleeve is embedded into the five-way pipe and is divided into a sleeve body section and an adjusting section; the sleeve body section is in threaded connection with the adjusting section; the outer wall of the first shaft cylinder is respectively provided with a bearing which is connected with the sleeve body section and the adjusting section; the sleeve body section is welded with the fixed part of the dental tray.

As a further preferable scheme of the invention, the side wall of the first shaft cylinder is provided with a notch, and a strain gauge is stuck at the notch; the strain gauge is used for sensing deformation between the first shaft cylinder and the second shaft cylinder.

As a further preferable scheme of the invention, a contact ring is sleeved at the notch of the side wall of the first shaft barrel, and the contact ring is provided with a conductive copper ring and is electrically connected with the strain gauge; and the side wall of the middle shaft sleeve is embedded with a PCB (printed circuit board) which is provided with a conductive elastic sheet and is electrically connected with the conductive copper ring.

Compared with the prior art, the invention provides a five-way fluted disc type centrally-mounted power assisting bicycle power device which has the following beneficial effects:

the invention can be inserted and assembled in a five-way pipe of a frame with general specification on the market, does not need to be matched with a special hanging bracket, can be matched with frames with most specifications on the market, has good adaptability, and is beneficial to the stability and miniaturization of the whole structure.

The tooth disc driving structure simplifies the installation process, reduces the interference to the bicycle structure, can better keep the original appearance and weight balance of the bicycle, can improve the torque of the tooth disc through the built-in power assisting system, and ensures that riding is easier.

The induction sensitivity of the strain gauge is improved by adopting a layout mode of double center shafts, meanwhile, the space can be saved, the strain gauge can be embedded into a PCB, the size of the original bicycle five-way pipe can be not changed, and the transformation cost is reduced; replace traditional handle control electric door's mechanism, improve the experience of riding, do not influence the person of riding and to the control of locomotive, avoid the distraction, improve the security of riding.

Drawings

FIG. 1 is a partial sectional view of the structure of embodiment 1 of the present invention;

FIG. 2 is a partial sectional view of the structure of embodiment 2 of the present invention;

FIG. 3 is an enlarged schematic view of the partial structure of FIG. 2;

FIG. 4 is a simplified cross-sectional view of the manual driving portion of example 2;

FIG. 5 is a simplified cross-sectional view of the driving portion of the power mechanism of embodiment 2;

FIG. 6 is a partial perspective view of the structure of embodiment 2 of the present invention;

FIG. 7 is a schematic view of a part of the structure of the present invention

FIG. 8 is a schematic view of a portion of the structure of the present invention.

Wherein: 100. a five-way pipe; 1. a power mechanism; 1-1, a stator; 1-2, a rotor; 2. a dental tray; 2-1, a fixing part; 2-2, a rotating part; 2-21, teeth; 2-22, a bracket flange; 2-3, chamber; 3. a bearing; 4. a power assisting mechanism; 4-1, sun gear; 4-2, planet gears; 4-3, a planet carrier; 4-4, an inner gear ring; 4-5, notch; 4-6, rolling balls; 4-7, springs; 5. moment sensing center shaft; 5-1, a first shaft barrel; 5-2, a second shaft cylinder; 5-3, a middle shaft sleeve; 5-31, sleeve body sections; 5-32, adjusting the section; 5-33, an adapter; 6. a spline housing; 7. a one-way bearing; 8. a strain gage; 9. a contact ring; 9-1, a conductive copper ring; 10. a PCB board; 10-1, a conductive spring piece.

Detailed Description

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1-8, the invention provides a five-way fluted disc type centrally-mounted power assisting bicycle power device, which comprises a power mechanism 1 and a toothed disc 2, and is characterized in that the toothed disc 2 comprises a fixed part 2-1 and a rotating part 2-2, wherein a bearing 3 is arranged between the fixed part 2-1 and the rotating part 2-2 to enable the rotating part 2-2 to rotate on the fixed part 2-1, and a cavity 2-3 is formed after the fixed part 2-1 is connected with the rotating part 2-2; the fixing part 2-1 is arranged on one side of the five-way pipe 100 of the bicycle; the outer wall of the rotating part 2-2 is provided with teeth 2-21; the power device is positioned in the cavity 2-3 and comprises a stator 1-1 and a rotor 1-2; the stator 1-1 is arranged on the fixed part 2-1; the rotor 1-2 is embedded on the rotating part 2-2, and the rotor 1-2 is arranged around the stator 1-1 for a circle.

As a further preferable aspect of the present invention, the rotating part 2-2 is provided with a bracket flange 2-22; the bracket flange 2-22 is connected with the rotating part 2-2 through bolts, and the bracket flange 2-22 is connected with a center shaft of the bicycle through a bearing 3.

As a further preferable scheme of the invention, the chamber 2-3 is also provided with a power assisting mechanism 4, and the power assisting mechanism 4 comprises a sun gear 4-1, a planet gear 4-2, a planet carrier 4-3 and an inner gear ring 4-4; the sun gear 4-1 is clamped on the outer wall of the bracket flange 2-22; the inner gear ring 4-4 is embedded on the fixed part 2-1 and is positioned at the inner side of the stator 1-1; the outer wall of the planet carrier 4-3 is provided with a bearing 3 which is connected with the fixed part 2-1, and the inner wall of the planet carrier 4-3 is sleeved with the support flange 2-22; the planet wheel 4-2 is arranged on the planet carrier 4-3, the planet carrier 4-3 is annular, and the planet wheel 4-2 is respectively connected with the sun wheel 4-1 and the inner gear ring 4-4 in a meshed manner;

the planetary gears 4-2 are provided with 3 or more than 3 planetary gears, are circumferentially arranged at intervals and are all arranged on the planetary gear carrier 4-3, and when the sun gear 4-1 rotates, the planetary gears 4-2 are driven to rotate, and as the position of the annular gear 4-4 is fixed, the planetary gears 4-2 can revolve around the sun gear 4-1 at the same time according to force transmission; the outer wall of the planet carrier 4-3 is connected with the fixed part 2-1 through the bearing 3, and the planet carrier 4-3 is driven to rotate when the planet wheel 4-2 revolves.

As a further preferable scheme of the invention, a notch 4-5 is arranged at the inner wall of the planet carrier 4-3; the notch 4-5 is internally provided with a ball 4-6 and a spring 4-7, and the spring 4-7 is positioned on one side of the ball 4-6; the outer wall of the bracket flange 2-22 and the ball 4-6 form sliding connection.

As a further preferable scheme of the invention, 3 notches 4-5, balls 4-6 and springs 4-7 are respectively arranged, and the notches, the balls 4-6 and the springs 4-7 are correspondingly combined and are arranged at the inner ring of the planet carrier 4-3 at intervals to form one-way clutch; when the planet carrier 4-3 actively rotates, the balls 4-6 are in a downhill state on the carrier flange 2-22, the space at the downhill position is narrower, and the balls 4-6 are locked after being clamped, so that the tooth disc carrier flange 2-22 is driven to rotate when the planet carrier 4-3 actively rotates.

As a further preferable scheme of the invention, the middle shaft of the bicycle is a moment sensing middle shaft 5; the moment sensing center shaft 5 is arranged in the bicycle five-way pipe 100; the moment sensing center shaft 5 comprises a first shaft barrel 5-1 and a second shaft barrel 5-2; the second shaft barrel 5-2 is arranged in the first shaft barrel 5-1 through a spline housing 6; the outer wall of the second shaft cylinder 5-2 is provided with a bearing 3 which is sleeved with the bracket flange 2-22; the outer wall of the first shaft barrel 5-1 is provided with a one-way bearing 7 which is sleeved with the bracket flange 2-22.

As a further preferable scheme of the invention, the moment sensing center shaft 5 further comprises a center shaft sleeve 5-3, and the outer walls of the first shaft sleeve 5-1 and the bracket flange 2-22 are respectively provided with a bearing 3 which is connected with the inner wall of the center shaft sleeve 5-3.

As a further preferable scheme of the invention, the middle shaft sleeve 5-3 is embedded into the five-way pipe 100, and the middle shaft sleeve 5-3 is divided into a sleeve body section 5-31 and an adjusting section 5-32; the sleeve body section 5-31 is in threaded connection with the adjusting section 5-32; the outer wall of the first shaft barrel 5-1 is respectively provided with a bearing 3 which is connected with the sleeve body section 5-31 and the adjusting section 5-32; the sleeve segment 5-31 is welded with the fixed part 2-1 of the dental tray 2.

As a further preferable scheme of the invention, the side wall of the first shaft barrel 5-1 is provided with a notch, and a strain gauge 8 is stuck at the notch; the strain gauge 8 is used for sensing the deformation between the first shaft cylinder 5-1 and the second shaft cylinder 5-2; when the crank is stepped, the first shaft tube 5-1 and the second shaft tube 5-2 are slightly deformed by the transmission of force, and the larger the induced deformation amount by the strain gauge 8 is, the larger the stepping force is, and the smaller the deformation amount is, the opposite is.

As a further preferable scheme of the invention, a contact ring 9 is sleeved at the notch of the side wall of the first shaft barrel 5-1, and the contact ring 9 is provided with a conductive copper ring 9-1 and is electrically connected with the strain gauge 8; the side wall of the middle shaft sleeve 5-3 is embedded with a PCB 10, and the PCB 10 is provided with a conductive spring piece 10-1 and is electrically connected with the conductive copper ring 9-1;

the PCB 10 receives and processes the signal from the strain gauge 8, and then the outgoing line connected to the PCB 10 passes through the opening on the wall of the five-way pipe and is connected with a motor controller arranged on the bicycle; the induction sensitivity of the strain gauge is improved by adopting a layout mode of double center shafts, meanwhile, the space can be saved, the strain gauge can be embedded into a PCB, the size of an original bicycle five-way pipe can be not changed, and the transformation cost is reduced.

As one embodiment 1 of the present invention, a battery driving part is first installed on an original bicycle; then demolish the axis and the tooth dish of former bicycle, insert this device on original five-way pipe 100 and then can use, when the rider steps on the pedal, the crank atress takes power moment to sense the rotation of axis 5, its effort makes first section of thick bamboo 5-1 and second section of thick bamboo 5-2 atress produce deformation, pass through foil gage 8 response and transmit on PCB board 10 carries out data processing, PCB board 10 passes through the lead-out wire and transmits in the controller of power unit 1, the output of battery drive part is controlled according to foil gage 8's response intensity, thereby reach the motor speed of controlling the helping hand bicycle through detecting the intensity of trampling, only need increase the intensity trample when the rider wants to obtain faster speed of riding obtains the deflection of bigger first section of thick bamboo 5-1, replace traditional handle control electric door's mechanism, improve the experience of riding, avoid the distraction, improve the security of riding.

When the power mechanism 1 receives a sensing signal, current is output to the stator 1-1, and when the current passes through the coil of the stator 1-1, a rotating magnetic field is generated, and the magnetic field acts on the rotor 1-2, so that the rotor 1-2 starts to rotate, and the rotating part 2-2 is driven to rotate on the fixed part 2-1, and the bicycle is driven by the teeth 2-21.

As a specific embodiment 2 of the present invention, on the basis of embodiment 2, an assist mechanism is added; the rotating part 2-2 rotates and drives the sun wheel 4-1 on the support flange 2-22 to rotate, the planet wheel 4-2 moves circularly around the sun wheel 4-1 through the transmission of the sun wheel 4-1, the acting force is transmitted to the planet carrier 4-3 by the planet wheel 4-2, the planet carrier 4-3 rotates, and the support flange 2-22 is driven to assist the rotating part 2-2 by the aid of the unidirectional clutch, so that torque is further improved, a rider rides the bicycle more easily and easily, the bicycle is labor-saving, transformation cost is greatly saved under the condition that the original bicycle frame structure is not changed, the structure is compact, transmission efficiency among gears is higher, large torque output can be realized in a small space, and the bicycle is transmitted simultaneously by a plurality of gears, so that the bicycle has better load distribution capacity and is more stable and reliable in the transmission process.

Standard for five-way on frame: the screw-thread english gauge BSA is one of the most traditional five-way standards, and the screw thread features a positive and a negative, the left is a positive screw thread, the right is a negative screw thread, the left is screwed clockwise, and the right is screwed anticlockwise. The thread outer diameter is 34.79mm, and the tooth pitch is 1.37 x 24TPI. The five-way specification is most common on road and mountain frames sold in the market and has the highest occupancy rate, and the five-way specification can be directly installed on the conventional English BSA five-way specification in the market, and is also the minimum five-way specification at present.

For the five-way pipe installed on other specifications, the application can be realized only by changing the size of the adapter piece 5-33 arranged on the middle shaft sleeve 5-3, so that the diameter of the adapter piece 5-33 corresponds to the diameter of the five-way pipe.

The mounting, setting, arranging or connecting modes include, but are not limited to, mounting, setting or connecting by means of screws, riveting, welding or sleeving, fixing and the like according to the needs, and the mounting, setting or connecting modes are selected according to the needs of working situations.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. The power device of the five-way fluted disc type middle-set power-assisted bicycle comprises a power mechanism (1) and a toothed disc (2), and is characterized in that the toothed disc (2) comprises a fixed part (2-1) and a rotating part (2-2), a bearing (3) is arranged between the fixed part (2-1) and the rotating part (2-2) to connect, the rotating part (2-2) rotates on the fixed part (2-1), and a cavity (2-3) is formed after the fixed part (2-1) is connected with the rotating part (2-2); the fixing part (2-1) is arranged on one side of a five-way pipe (100) of the bicycle; the outer wall of the rotating part (2-2) is provided with teeth (2-21); the power device is positioned in the cavity (2-3) and comprises a stator (1-1) and a rotor (1-2); the stator (1-1) is arranged on the fixed part (2-1); the rotor (1-2) is embedded on the rotating part (2-2), and the rotor (1-2) is arranged around the stator (1-1) for a circle.

2. The five-way gear-disc-type middle-mounted power assisting bicycle power device is not changed according to claim 1, wherein the rotating part (2-2) is provided with a bracket flange (2-22); the bracket flange (2-22) is connected with the rotating part (2-2) through bolts, and the bracket flange (2-22) is connected with a center shaft of the bicycle through a bearing (3).

3. The power device of the five-way gear-disc-type middle-mounted power-assisted bicycle without changing according to claim 2, wherein the chamber (2-3) is further provided with a power-assisted mechanism (4), and the power-assisted mechanism (4) comprises a sun gear (4-1), a planet gear (4-2), a planet carrier (4-3) and an inner gear ring (4-4); the sun gear (4-1) is clamped on the outer wall of the bracket flange (2-22); the inner gear ring (4-4) is inlaid on the fixed part (2-1) and is positioned at the inner side of the stator (1-1); the outer wall of the planet carrier (4-3) is provided with a bearing (3) which is connected with the fixed part (2-1), and the inner wall of the planet carrier (4-3) is sleeved with the support flange (2-22); the planet wheel (4-2) is arranged on the planet carrier (4-3), and the planet wheel (4-2) is respectively connected with the sun wheel (4-1) and the inner gear ring (4-4) in a meshed mode.

4. The five-way gear-disc-type middle-mounted power-assisted bicycle power device which is not changed according to claim 3, wherein a notch (4-5) is arranged at the inner wall of the planet carrier (4-3); the slot (4-5) is internally provided with a ball (4-6) and a spring (4-7), and the spring (4-7) is positioned at one side of the ball (4-6); the outer wall of the bracket flange (2-22) is in sliding connection with the ball (4-6).

5. The power device of the five-way fluted disc type centrally-mounted power assisted bicycle without changing according to claim 4, wherein the number of the notches (4-5), the balls (4-6) and the springs (4-7) is 3, and the combination is correspondingly arranged at the inner ring of the planet carrier (4-3) at intervals to form one-way clutch.

6. The power device of the five-way gear-disc-type middle-set power-assisted bicycle without changing according to claim 2 or 5, wherein a middle shaft of the bicycle is a moment sensing middle shaft (5); the moment sensing center shaft (5) is arranged in a bicycle five-way pipe (100); the moment sensing center shaft (5) comprises a first shaft cylinder (5-1) and a second shaft cylinder (5-2); the second shaft cylinder (5-2) is arranged in the first shaft cylinder (5-1) through a spline housing (6); the outer wall of the second shaft cylinder (5-2) is provided with a bearing (3) which is sleeved with the bracket flange (2-22); the outer wall of the first shaft cylinder (5-1) is provided with a one-way bearing (7) which is sleeved with the bracket flange (2-22).

7. The power device of the five-way gear-disc-type middle-mounted power-assisted bicycle without changing according to claim 6, wherein the moment sensing center shaft (5) further comprises a center shaft sleeve (5-3), and the outer walls of the first shaft sleeve (5-1) and the bracket flange (2-22) are respectively provided with a bearing (3) which is connected with the inner wall of the center shaft sleeve (5-3).

8. The power device of the five-way gear-type centrally-mounted booster bicycle without changing according to claim 7, wherein the middle shaft sleeve (5-3) is embedded in the five-way pipe (100), and the middle shaft sleeve (5-3) is divided into a sleeve body section (5-31) and an adjusting section (5-32); the sleeve body section (5-31) is in threaded connection with the adjusting section (5-32); the outer wall of the first shaft barrel (5-1) is respectively provided with a bearing (3) which is connected with the sleeve body section (5-31) and the adjusting section (5-32); the sleeve body section (5-31) is welded with the fixing part (2-1) of the dental tray (2).

9. The power device of the five-way fluted disc type centrally-mounted power assisted bicycle without changing according to claim 7, wherein the side wall of the first shaft tube (5-1) is provided with a notch, and a strain gauge (8) is stuck at the notch; the strain gauge (8) is used for sensing deformation between the first shaft cylinder (5-1) and the second shaft cylinder (5-2).

10. The power device of the five-way fluted disc type centrally-mounted booster bicycle is characterized in that a contact ring (9) is sleeved at a notch of the side wall of the first shaft barrel (5-1), and the contact ring (9) is provided with a conductive copper ring (9-1) and is electrically connected with the strain gauge (8); the side wall of the middle shaft sleeve (5-3) is embedded with a PCB (10), and the PCB (10) is provided with a conductive spring piece (10-1) and is electrically connected with the conductive copper ring (9-1).