WO2013097282A1

WO2013097282A1 - Magnetron torque-induction transmission system

Info

Publication number: WO2013097282A1
Application number: PCT/CN2012/001643
Authority: WO
Inventors: 高峰; 张来刚; 吴俊�
Original assignee: 苏州博菲利电动科技有限公司
Priority date: 2011-12-29
Filing date: 2012-12-07
Publication date: 2013-07-04
Also published as: CN102514677A

Abstract

A magnetron torque-induction transmission system comprising a center shaft (11), a motor, a reduction gearbox, a sprocket (8), and a torque-induction apparatus. The torque-induction apparatus detects a driving force exerted on the center shaft and controls the motor to output a driving force. The driving force outputted by the motor drives the sprocket after being decelerated by the reduction gearbox. The magnetron torque-induction transmission system employs two one-way overrunning clutches (1 and 10), allows for mutual non-interference between human-powered-drive and electric-drive, thus, when driven by human-power, a rotor is not driven into cutting magnetic field lines and producing resistance, while when driven by electric power, a pedal is not driven into rotation and thereby producing additional resistance.

Description

FIELD OF THE INVENTION The present invention relates to the field of electric bicycles, and more particularly to a magnetically controlled torque induction transmission system for an electric bicycle.

Say

Background technique

Book

Electricized bicycle (electric bicycle), commonly known as electric bicycle, electric bicycle, is a kind of vehicle with battery as the main energy. Its appearance is similar to that of bicycle and motorcycle. The appearance is similar to that of bicycle. Pedal and chain can be used as auxiliary power. In the current electric bicycles, the human drive and the electric drive are prone to mutual interference, and when the human power is driven, the rotor is cut by the magnetic lines of force to generate resistance, and when the electric drive is driven, the pedals are rotated to generate additional resistance. SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetron torque sensing transmission system capable of realizing that human power driving and electric driving do not interfere with each other, and that no additional resistance is generated when driven by human power or electric power. In order to achieve the above object, the present invention adopts the following technical solutions: a magnetically controlled torque sensing transmission system including a center shaft, a motor, a reduction box, a sprocket, and a torque sensing device; the torque sensing device detects application to the The driving force on the central axis is controlled to control the motor output driving force, and the motor output driving force is driven by the reduction gear box to drive the sprocket. Further, the reduction gearbox includes a center outer gear, a center inner gear, a planetary gear, and a planet carrier; The carrier is fixedly connected to the outer casing of the motor, and one end of the central internal gear is fixedly connected to the outer casing of the motor, and the other end is fixedly connected to the outer ring and the sprocket of the first one-way beyond clutch. A planet gear meshes between the center internal gear and the center outer gear.

Further, the motor includes a motor rotor and a hollow shaft, and the motor rotor outputs torque and rotates through the second overrunning clutch to drive the hollow shaft, and the hollow shaft rotationally drives the center external gear through the planetary gear and the Deceleration of the internal gear, the output power drives the sprocket.

Further, the torque sensing device includes a first one-way overrunning clutch, a driving disc, a driven disc, a first Hall sensor, and a second Hall sensor;

The driving disc is fixedly mounted on the central shaft, and the driven disc and the first one-way over-the-close inner ring are fixedly mounted on the central shaft, and the active disc and the driven disc elastic member are attached to each other. The first unidirectional overrunning outer ring is fixedly mounted on the sprocket; the active disk is mounted with a first boosting magnetic ring in a circumferential direction, and the driven disk is mounted with a second assisting force in a circumferential direction. a magnetic ring, the first boosting magnetic ring and the second boosting magnetic ring are radially engaged; the sensing surfaces of the first Hall sensor and the second Hall sensor are respectively associated with the first boosting magnetic ring and the second assisting magnetic The ring is opposite.

As a variation of the present invention, the torque sensing device includes a first one-way overrunning clutch, a second one-way overrunning clutch, a driving disc, a driven disc, a first Hall sensor, and a second Hall sensor;

The driving disk is fixedly mounted on the central shaft by a first one-way overrunning clutch, and the driven disk and the second one-way overrunning inner ring are fixedly mounted on the central axis, the active disk and The driven disc elastic members are in contact with each other, and the second one-way overrunning outer ring is fixedly connected to one side of the central internal gear; the driving disc is mounted with a first boosting magnetic ring in a circumferential direction, the driven a second auxiliary magnetic ring is mounted in the circumferential direction, the first auxiliary magnetic ring and the second auxiliary magnetic ring are radially engaged; the sensing surfaces of the first Hall sensor and the second Hall sensor are respectively associated with the first A booster magnetic ring is opposite to the second booster magnetic ring.

Further, a magnetic steel is disposed in the first auxiliary magnetic ring and the second auxiliary magnetic ring, and a magnetic steel magnetic pole in the first auxiliary magnetic ring corresponds to a magnetic steel magnetic pole in the second auxiliary magnetic ring .

Advantages and advantages of the present invention: The invention provides a magnetic control type torque induction transmission system, which is provided with a torque sensing device and adopts two one-way overrunning clutches, which can realize the human power drive and the electric drive do not interfere with each other, and does not drive the rotor when driven by human power. Cutting the magnetic lines of force creates resistance; it does not drive the pedals to rotate during electric drive to create additional resistance. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a magnetically controlled torque sensing transmission system provided by the present invention; FIG. 2 is another schematic structural view of a magnetically controlled torque sensing transmission system provided by the present invention; A schematic diagram of an initial state structure of a magnetically controlled torque sensing transmission system; FIG. 4 is a schematic structural view of a working state of a magnetically controlled torque sensing transmission system provided by the present invention. Description of the reference signs:

1...the second one-way beyond clutch;

2... center external gear;

3...motor coil;

4...motor rotor;

5... motor housing;

6... planetary gears;

7 ······ center gear;

8...sprocket wheel;

9... hollow shaft;

10...the first one-way beyond clutch;

11...the central axis;

12...the first Hall sensor;

13...the first power magnetic ring;

14...second booster magnetic ring; 15...the second Hall sensor;

16...elastic parts;

17...the planet carrier;

18...active disk;

19... driven disk;

20...Power magnetic steel. DETAILED DESCRIPTION OF THE INVENTION In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1, a magnetically controlled torque sensing transmission system provided by the present invention includes: a motor, a reduction box, a sprocket 8, a first one-way overrunning clutch 10, a center shaft 11, a driving plate 18, and a driven plate 19. The first Hall sensor 12, the second Hall sensor 13, the second one-way overrunning clutch, and the like.

The reduction gearbox includes a central external gear 2, a central internal gear 7, a planetary gear 6, and a carrier 17; the carrier 17 is fixedly coupled to the outer casing 5 of the motor, and one end of the central internal gear 7 is coupled to the motor The outer casing 5 is fixedly connected, and the other end is fixedly coupled to the outer ring and the sprocket 8 of the first one-way overrunning clutch 10, and the planetary gear 6 is meshed between the central internal gear 7 and the center outer gear 2.

The motor includes a motor rotor 4, a motor coil 3, and a hollow shaft 9, and the motor rotor 4 outputs torque and drives the hollow shaft 9 to rotate by a second overrunning clutch 1, and the hollow shaft 9 rotationally drives the center external gear 2 The output power drives the sprocket 8 through the deceleration of the planetary gear 6 and the center internal gear 7.

A coil of assist magnetic steel 20 is disposed on the driving plate 18 in the circumferential direction to form a first boosting magnetic ring 13, and the driven disk 19 is also disposed with a coil of assisted magnetic steel 20 to form a second boosting magnetic ring 14. And the number of the magnetic steels is the same, wherein the driving disk 18 and the driven disk 19 pass through the sliding card slot and the elastic member 16, If the tension springs are attached to each other, in the initial state, the first booster magnetic ring 13 and the second booster magnetic ring 14 are radially engaged as shown in FIG. 3, and the first booster magnetic ring 13 and the second booster magnetic ring 14 are inside. The magnetic poles of the series of magnetic steels 20 are in one-to-one correspondence, the driving disk 18 is fixedly mounted on the central shaft 11, and the driven disk 19 and the inner ring of the first single item beyond the clutch 10 are mounted on the same shaft, and the first one-way overrunning clutch 10 The outer ring and the sprocket 8 are fixedly mounted. The first Hall sensor 12 and the second Hall sensor 15 are fixed opposite to the motor housing 5, and the sensing faces of the two Hall elements are respectively opposed to the first booster magnetic ring 13 and the driven disk 19 on the active disk 18. The second booster magnetic ring 14.

As shown in FIG. 2, as a modification, the driving plate 18 is fixedly mounted on the center shaft 11 by a first one-way overrunning clutch 10, and the driven plate 19 and the second one-way beyond the clutch 19 The ring is fixedly mounted on the central shaft 11, and the driving disk 18 and the driven disk 19 are attached to each other by an elastic member 16, and the second one-way outer ring of the clutch 1 and the center internal gear side are a fixed connection; the driving disk 18 is mounted with a first auxiliary magnetic ring 13 in the circumferential direction, and the driven disk 19 is mounted with a second auxiliary magnetic ring 14 in the circumferential direction, the first auxiliary magnetic ring 13 and the second auxiliary force The magnetic ring 14 is radially engaged; the sensing surfaces of the first Hall sensor 12 and the second Hall sensor 15 are opposite to the first and second boosting magnetic rings 13 and 14, respectively. The deformation can transfer the second one-way overrunning clutch 1 from the hollow shaft 9 to the output of the reduction gear box, and can control the volume of the entire motor, and does not drive the reduction gear box to rotate when manually driven, correspondingly, the first one-way overrunning clutch The 10 position is also moved between the center shaft 11 and the drive plate 18. The working principle of a magnetically controlled torque sensing transmission system provided by the present invention is as shown in FIG. 3 and FIG. 4. In the initial state, that is, when the human is not pedaling, the active disk 18 and the driven disk 19 correspond to each other. The angle A and the angle B of the pair of magnetic steels 20 are the same with respect to a certain base point. When the electric bicycle is required to assist, the human foot presses the foot pedal, and the middle shaft 11 rotates to drive the driving wheel 18 to rotate. At this time, the active disk 18 The spring 16 is compressed, and the torque is transmitted to the driven disk 19 at the same time. The driving disk 18 and the driven disk 19 are relatively twisted at a certain angle (the two sets of magnetic rings are relatively displaced, as shown in FIG. 4, the angle A is larger than the angle B), and active. The disc 18 and the driven disc 19 are applied to the sprocket 8 by a first one-way overrunning clutch 10 to drive the bicycle forward. At this time, both the active disk 18 and the driven disk 19 are rotated at a high speed, and after a high-speed magnetic steel 20 on the driving disk 18 and the driven disk 19 passes through the sensing surfaces of the two Hall sensors, the two Hall sensors respectively output. A series of square wave signals, the active disk 18 and the driven disk 19 are relatively twisted by a certain angle due to the torque of the foot, and the angle A is large. At angle B, the square wave signal on the active disk 18 is ahead of the square wave signal on the driven disk 19. After the two sets of pulse signals having different phases are amplified, the corresponding control current is output according to the phase difference. The proportional ratio of the design controls the motor output drive force. That is to say, the greater the manpower drive, the greater the relative displacement of the magnets 20 in the two sets of magnetic rings, and the greater the phase difference between the two sets of pulses, the greater the driving force of the motor output, so that the motor drive and the human drive are superimposed. Thereby achieving a real boosting purpose.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; the invention is modified or equivalently substituted without departing from the spirit and scope of the invention. Within the scope of protection.

Claims

Claim

A magnetically controlled torque sensing transmission system, comprising: a center shaft, a motor, a speed reducer, a sprocket, and a torque sensing device;

The torque sensing device detects a driving force applied to the center shaft and controls a motor output driving force, and the motor output driving force is driven by the reduction gear to drive the sprocket.

2. The magnetron torque sensing transmission system according to claim 1, wherein the reduction gearbox comprises a center external gear, a center internal gear, a planetary gear, and a carrier;

The carrier is fixedly connected to the outer casing of the motor, and one end of the central internal gear is fixedly connected to the outer casing of the motor, and the other end is fixedly connected to the outer ring and the sprocket of the first one-way beyond clutch. A planet gear meshes between the center internal gear and the center outer gear.

3. The magnetron torque sensing transmission system according to claim 2, wherein the motor comprises a motor rotor and a hollow shaft, and the motor rotor outputs torque and drives the hollow shaft to rotate through the second overrunning clutch. The hollow shaft rotationally drives the center external gear, and the output gear drives the sprocket through deceleration of the planetary gear and the center internal gear.

4. The magnetron torque sensing transmission system according to claim 3, wherein the torque sensing device comprises a first one-way overrunning clutch, a driving disk, a driven disk, a first Hall sensor, and a second Hall sensor;

5. The magnetron torque sensing transmission system according to claim 2, wherein the torque sensing device comprises a first one-way overrunning clutch, a second one-way overrunning clutch, a driving disc, a driven disc, and a first a Hall sensor and a second Hall sensor; The driving disk is fixedly mounted on the central shaft by a first one-way overrunning clutch, and the driven disk and the second one-way overrunning inner ring are fixedly mounted on the central axis, the active disk and The driven disc elastic members are in contact with each other, and the second one-way overrunning outer ring is fixedly connected to one side of the central internal gear; the driving disc is mounted with a first boosting magnetic ring in a circumferential direction, the driven a second auxiliary magnetic ring is mounted in the circumferential direction, the first auxiliary magnetic ring and the second auxiliary magnetic ring are radially engaged; the sensing surfaces of the first Hall sensor and the second Hall sensor are respectively associated with the first A booster magnetic ring is opposite to the second booster magnetic ring.

The magnetically controlled torque sensing transmission system according to claim 4 or 5, wherein the first auxiliary magnetic ring and the second auxiliary magnetic ring are provided with magnetic steel, and the first auxiliary magnetic A magnetic steel pole in the ring corresponds to a magnetic steel pole in the second boosting magnetic ring.