Continuously variable transmission and bicycle

Abstract

The invention provides a continuously variable transmission and a bicycle. The continuously variable transmission comprises a base, a first power wheel, a variable speed generation wheel, an adjusting assembly and a first locking piece. The adjusting assembly comprises a driving source and a speed adjusting wheel, the driving source is arranged on the base, the speed adjusting wheel is rotationally arranged on the base and connected to the driving source and the speed changing generation wheel, the driving source is used for driving the speed adjusting wheel to rotate relative to the base, and the speed adjusting wheel is arranged on the base. The speed regulation wheel is used for driving the speed change generation wheel to slide, so that the speed change generation wheel is eccentrically arranged relative to the first power wheel; under the condition that the speed of the first power wheel is constant, the driving source is controlled to change the eccentric distance of the speed change generation wheel relative to the first power wheel, so that the rotating speed of the speed change generation wheel is changed, automatic adjustment of stepless speed change is achieved, the adjustment mode of stepless speed change can be simplified, and the personalized adjustment requirement for treading force during riding is met.

Description

Technical Field

[0001] The invention relates to the technical field of bicycles, and in particular to a continuously variable transmission and a bicycle. Background Art

[0002] In the related art, a stepped transmission is used on a bicycle or a power-assisted bicycle, which is divided into two types: internal gear shifting and external gear shifting. Both types of transmissions have limited fixed gears, and it is often the case that the pedaling force is too large when shifting up a gear, and too small when shifting down a gear. This cannot meet people's personalized adjustment needs for the pedaling force when riding; moreover, the speed adjustment of the transmission is usually manually adjusted, which is inconvenient, resulting in defects in the continuously variable transmission. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a continuously variable transmission and a bicycle, aiming to solve the problem that the continuously variable transmission used in bicycles in the related art still has defects.

[0004] In order to solve the above technical problems, the present invention provides a continuously variable transmission in a first aspect, comprising:

[0005] Pedestal;

[0006] A first power wheel, rotatably disposed on the outer side of the base, wherein the first power wheel is coaxially disposed with the base;

[0007] A speed-changing generating wheel is rotatably arranged outside the base and located on one side of the first power wheel. The speed-changing generating wheel is slidably assembled on the base along the radial direction of the base. The rotating shaft between the speed-changing generating wheel and the base is parallel to or coaxial with the central axis of the base.

[0008] An adjusting assembly, comprising a driving source and a speed regulating wheel, wherein the driving source is arranged on the base, the speed regulating wheel is rotatably arranged on the base, the speed regulating wheel is respectively connected to the driving source and the speed generating wheel, the driving source is used to drive the speed regulating wheel to rotate relative to the base, and the speed regulating wheel is used to drive the speed generating wheel to slide, so that the speed generating wheel is eccentrically arranged relative to the first power wheel; and

[0009] A first locking member is slidably assembled on the speed-changing generating wheel along the circumferential direction of the base and is slidably connected to the first power wheel along the radial direction of the base. The first locking member is fixed to the speed-changing generating wheel in the radial direction of the base and to the first power wheel in the circumferential direction of the base. A plurality of the first locking members are provided. The plurality of the first locking members are distributed in the circumferential direction of the speed-changing generating wheel and enclose a concentric circle coaxially arranged with the speed-changing generating wheel.

[0010] Among them, the first locking member has a locked state in which it can be fixed to the speed generating wheel along a first direction, and an unlocked state in which it can slide relative to the speed generating wheel along a second direction. The first direction is opposite to the second direction. When the speed generating wheel is eccentric relative to the first power wheel and each of the first locking members slides along the first direction, only the first locking member with the largest linear velocity is fixed to the speed generating wheel.

[0011] Optionally, the adjustment component also includes a transmission mechanism, which includes a first transmission member and a second transmission member, the first transmission member is arranged on the driving source, the second transmission member is arranged on the speed regulating wheel, and the first transmission member is meshed with the second transmission member so that the driving source drives the speed regulating wheel to rotate.

[0012] Optionally, the transmission mechanism also includes a third transmission member, which is rotatably arranged on the base, and the rotating shaft between the third transmission member and the base and the rotating shaft between the speed regulating wheel and the base are parallel to each other, and the third transmission member is respectively engaged with the first transmission member and the second transmission member.

[0013] Optionally, the transmission mechanism further includes:

[0014] A rotating shaft is rotatably disposed on the base, the rotating shaft and the central axis of the base are parallel to each other, and the third transmission member is fixed to an end of the rotating shaft away from the base; and

[0015] A fourth transmission member is fixed to one end of the rotating shaft close to the base, and the fourth transmission member is meshed with the second transmission member.

[0016] Optionally, the adjustment assembly further includes a mounting seat, the mounting seat is fixed to the base and is provided with a receiving cavity, and the rotating shaft, the first transmission member, the second transmission member, the third transmission member and the fourth transmission member are all received in the receiving cavity;

[0017] The transmission mechanism further includes a first bearing and a second bearing, wherein the first bearing is respectively connected to the mounting seat and an end of the rotating shaft away from the base, and the second bearing is respectively connected to the mounting seat and an end of the rotating shaft close to the base.

[0018] Optionally, the driving source includes a driving part and an output shaft, the driving part is fixed to the base and arranged outside the mounting seat, one end of the output shaft is connected to the driving part and the other end passes through the mounting seat, and the first transmission member is sleeved on the outside of the output shaft;

[0019] The adjustment assembly also includes a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are respectively mounted on both ends of the output shaft and accommodated in the accommodating cavity, the first transmission member is arranged between the first limiting ring and the second limiting ring, and one end of the first limiting ring and the second limiting ring away from the first transmission member respectively abuts against the opposite side walls of the accommodating cavity.

[0020] Optionally, the continuously variable transmission further comprises an eccentric seat, the eccentric seat is sleeved on the outer side of the base and slidably assembled on the base along the radial direction of the base, the speed change generating wheel is rotatably arranged on the outer side of the eccentric seat, and the speed change generating wheel is fixed to the eccentric seat in the radial direction of the base;

[0021] Wherein, the eccentric seat is provided with a fifth transmission member, the speed regulating wheel is provided with a sixth transmission member, and the fifth transmission member is meshed with the sixth transmission member so that the speed regulating wheel drives the eccentric seat to slide relative to the base.

[0022] Optionally, a clearance through hole is provided on the eccentric seat, and the length of the clearance through hole extends along the radial direction of the base;

[0023] A notch is provided on the peripheral surface of the base, the base is slidably assembled in the clearance through hole, and the notch is at least partially located in the clearance through hole.

[0024] Optionally, the continuously variable transmission further comprises:

[0025] a second power wheel, rotatably disposed outside the base and located on a side of the speed-changing generating wheel away from the first power wheel, the second power wheel being coaxially disposed with the base; and

[0026] A second locking member is slidably assembled on the speed-changing generating wheel along the circumferential direction of the base and is slidably connected to the second power wheel along the radial direction of the base. The second locking member is fixed to the speed-changing generating wheel in the radial direction of the base and to the second power wheel in the circumferential direction of the base. A plurality of second locking members are provided. The plurality of second locking members are distributed in the circumferential direction of the speed-changing generating wheel and enclose a concentric circle coaxially arranged with the speed-changing generating wheel.

[0027] Among them, the second locking member has a locked state in which it can be fixed to the speed shift generating wheel along the first direction, and an unlocked state in which it can slide relative to the speed shift generating wheel along the second direction. When the speed shift generating wheel is eccentric relative to the second power wheel and each of the second locking members slides along the first direction, only the second locking member with the largest linear velocity is fixed to the speed shift generating wheel.

[0028] A second aspect of the present invention provides a bicycle comprising the continuously variable transmission as described above.

[0029] Compared with the related art, the continuously variable transmission and bicycle of the present invention have the following beneficial effects: the driving source can be controlled to change the eccentric distance of the speed-changing generating wheel relative to the first power wheel under the condition that the speed of the first power wheel is constant, so as to change the rotation speed of the speed-changing generating wheel, and realize the automatic adjustment of continuously variable speed, thereby simplifying the adjustment method of continuously variable speed, and meeting the personalized adjustment requirements of pedaling force during riding. In addition, the continuously variable transmission can realize non-friction continuous continuously variable speed, with large transmission torque and high transmission efficiency; the speed can be changed in the stationary state, rotating state and riding state, and the speed regulation is convenient, light weight and small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 is a schematic structural diagram of a continuously variable transmission provided by an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of the assembly relationship between the driving source, the speed regulating wheel and the transmission mechanism provided by an embodiment of the present invention;

[0033] Figure 3 is an exploded view of an adjustment component provided by an embodiment of the present invention;

[0034] Figure 4 is an exploded view of a partial structure of a continuously variable transmission provided by an embodiment of the present invention;

[0035] Figure 5 yes Figure 4 Exploded view of detail A;

[0036] Figure 6 is a schematic diagram of the distribution of the first locking members when the gear shifting occurs when the wheel is offset according to an embodiment of the present invention;

[0037] Figure 7 is a schematic diagram of the distribution of the first locking members when the speed change generating wheel is not offset provided by an embodiment of the present invention;

[0038] Figure 8 is a schematic structural diagram of a first locking member provided in an embodiment of the present invention;

[0039] Fig. 9is a cross-sectional view of a first locking member provided in an embodiment of the present invention;

[0040] Fig.10 is a schematic structural diagram of a second locking member provided in an embodiment of the present invention;

[0041] Fig.11 is a cross-sectional view of a second locking member provided in an embodiment of the present invention.

[0042] In the accompanying drawings, each reference numeral indicates: 1, base; 11, notch; 12, support plate; 2, first power wheel; 21, first connecting groove; 3, speed change generating wheel; 31, first mounting groove; 311, first inner wall; 312, first outer wall; 32, second mounting groove; 321, second inner wall; 322, second outer wall; 4, adjustment component; 41, drive source; 411, drive unit; 412, output shaft; 413, protective cover; 42, speed regulating wheel; 421, sixth transmission moving member; 43, transmission mechanism; 431, first transmission member; 432, second transmission member; 433, third transmission member; 434, fourth transmission member; 435, rotating shaft; 436, first bearing; 437, second bearing; 438, third bearing; 439, fourth bearing; 44, mounting seat; 441, housing; 4411, receiving cavity; 4412, locking hole; 4413, first mounting hole; 4414, second mounting hole; 442, upper cover; 443, lower cover; 45 , first limiting ring; 46, second limiting ring; 5, first locking member; 51, first sliding seat; 511, first containing groove; 52, first guide part; 521, first guiding inclined surface; 53, first locking part; 54, first elastic member; 55, first connecting part; 56, first protective sleeve; 57, first friction block; 6, eccentric seat; 61, fifth transmission member; 62, giving way through hole; 7, second power wheel; 71, second connecting groove; 8, second locking member; 81, second sliding seat; 8 11. Second accommodating groove; 82. Second guide portion; 821. Second guide slope; 83. Second locking portion; 84. Second elastic member; 85. Second connecting portion; 86. Second protective sleeve; 87. Second friction block; 9. First inner friction ring; 10. First outer friction ring; 20. Third limiting ring; 30. Second inner friction ring; 40. Second outer friction ring; 50. Fourth limiting ring; 60. Fifth bearing; 70. Sixth bearing; 80. Seventh bearing; 90. Eighth bearing. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] Example:

[0047] The embodiment of the present invention provides a bicycle, comprising a vehicle body and a continuously variable transmission, wherein the continuously variable transmission is arranged on the vehicle body, and by adjusting the continuously variable transmission, the bicycle can be quickly adjusted to a desired speed ratio within a speed range when the bicycle is in a stopped state, a riding state, and a gliding state. The continuously variable transmission is fixed to the vehicle body through a barrel axle, and the bicycle is further provided with connecting plates respectively fixed to the vehicle body and the continuously variable transmission, and the connecting plates can assist in fixing and preventing the continuously variable transmission from rotating relative to the vehicle body.

[0048] See also Figures 1 to 11The continuously variable transmission includes a base 1, a first power wheel 2, a speed-changing generating wheel 3, an adjusting assembly 4 and a first locking member 5. The first power wheel 2 is rotatably arranged on the outside of the base 1, and the first power wheel 2 is coaxially arranged with the base 1, that is, the first power wheel 2 is sleeved on the outside of the base 1 and can rotate around the central axis of the base 1. The speed-changing generating wheel 3 is rotatably arranged on the outside of the base 1 and is located on one side of the first power wheel 2. The speed-changing generating wheel 3 is slidably assembled on the base 1 along the radial direction of the base 1, and the rotating shaft between the speed-changing generating wheel 3 and the base 1 is parallel to or coaxial with the central axis of the base 1, that is, the speed-changing generating wheel 3 is sleeved on the outside of the base 1, and the speed-changing generating wheel 3 can rotate around the central axis of the base 1, and can also slide relative to the base 1 along the radial direction of the base 1. The adjustment component 4 includes a driving source 41 and a speed regulating wheel 42. The driving source 41 is arranged on the base 1. The speed regulating wheel 42 is rotatably arranged on the base 1. The speed regulating wheel 42 is respectively connected to the driving source 41 and the speed generating wheel 3. The driving source 41 is used to drive the speed regulating wheel 42 to rotate relative to the base 1. The speed regulating wheel 42 is used to drive the speed generating wheel 3 to slide so that the speed generating wheel 3 is eccentrically arranged relative to the first power wheel 2. The first locking member 5 is slidably assembled on the speed generating wheel 3 along the circumferential direction of the base 1 and is slidably connected to the first power wheel 2 along the radial direction of the base 1. The first locking member 5 is fixed to the speed generating wheel 3 in the radial direction of the base 1, and is fixed to the first power wheel 2 in the circumferential direction of the base 1. There are multiple first locking members 5, and the multiple first locking members 5 are distributed in the circumferential direction of the speed generating wheel 3 and enclosed to form concentric circles coaxially arranged with the speed generating wheel 3; wherein the first locking member 5 has a locked state in which it can be fixed to the speed generating wheel 3 along the first direction, and an unlocked state in which it can slide relative to the speed generating wheel 3 along the second direction, the first direction is opposite to the second direction, and when the speed generating wheel 3 is eccentric relative to the first power wheel 2 and each of the first locking members 5 slides along the first direction, only the first locking member 5 with the largest linear velocity is fixed to the speed generating wheel 3.

[0049] The driving source 41 drives the speed regulating wheel 42 to rotate. When the speed generating wheel 3 moves a certain distance in the radial direction of the base 1 under the drive of the speed regulating wheel 42, the speed generating wheel 3 is eccentrically arranged relative to the first power wheel 2, and the concentric circles coaxially arranged with the speed generating wheel 3 formed by each first locking member 5 are eccentrically arranged relative to the first power wheel 2. At this time, the first power wheel 2 is driven to rotate in the first direction, the first locking member 5 follows the first power wheel 2 to rotate in the first direction and drives the speed generating wheel 3 to rotate in the first direction, and the first locking member 5 can cause continuous linear velocity changes and angular velocity changes on the speed generating wheel 3, only the first locking member 5 with the largest linear velocity is fixed to each other, and the remaining first locking members 5 move on the speed generating wheel 3, and the speed generating wheel 3 follows the first locking member 5 with the largest linear velocity to rotate synchronously, so that the speed regulating wheel 42 can be adjusted by controlling the driving source 41, and the speed regulating wheel 42 can be adjusted to change the eccentric distance of the speed generating wheel 3 relative to the first power wheel 2, and change the maximum linear velocity of the first locking member 5, so that the rotation speed of the speed generating wheel 3 changes, and the rotation speed adjustment of the speed generating wheel 3 is completed. Therefore, the driving source 41 can be controlled to change the eccentric distance of the speed-changing generating wheel 3 relative to the first power wheel 2 when the speed of the first power wheel 2 is constant, so as to change the rotation speed of the speed-changing generating wheel 3 and realize the automatic adjustment of the stepless speed change, thereby simplifying the adjustment method of the stepless speed change and meeting the personalized adjustment requirements of the pedaling force during riding. In addition, the stepless transmission can realize non-friction continuous stepless speed change, with large transmission torque and high transmission efficiency; it can change speed in the stationary state, rotating state and riding state, with convenient speed regulation, light weight and small size.

[0050] It should be noted that the driving source 41 may be a motor, and the motor is controlled to drive the speed regulating wheel 42 to rotate, thereby driving the speed change generating wheel 3 to slide. The first direction may be clockwise, and the second direction may be counterclockwise. One of the first power wheel 2 and the speed change generating wheel 3 is a speed input wheel, and the other is a speed output wheel. For example, the first power wheel 2 is an input wheel, and the speed change generating wheel 3 is an output wheel.

[0051] It should be understood that the first power wheel 2, the first locking member 5 and the speed shift generating wheel 3 constitute an overrunning clutch; wherein, taking the first power wheel 2 as the speed input wheel as an example, when the first power wheel 2 rotates clockwise, all the first locking members 5 rotate clockwise with the first power wheel 2, and all the first locking members 5 are fixed to the speed shift generating wheel 3, and the speed shift generating wheel 3 rotates clockwise at this time; when the first power wheel 2 rotates counterclockwise, all the first locking members 5 rotate counterclockwise with the first power wheel 2, and all the first locking members 5 can slide relative to the speed shift generating wheel 3, and the speed shift generating wheel 3 remains stationary at this time.

[0052] See also Figure 2 and Figure 3In some embodiments, the adjustment component 4 further includes a transmission mechanism 43, the transmission mechanism 43 includes a first transmission member 431 and a second transmission member 432, the first transmission member 431 is disposed on the driving source 41, the second transmission member 432 is disposed on the speed regulating wheel 42, the first transmission member 431 and the second transmission member 432 are meshed and matched, so that the driving source 41 drives the speed regulating wheel 42 to rotate. The driving source 41 can be a rotary motor, the rotary motor drives the first transmission member 431 to rotate, the first transmission member 431 and the second transmission member 432 are meshed and matched, so that the rotary motor can drive the speed regulating wheel 42 to rotate; the first transmission member 431 and the second transmission member 432 can be either gear transmission or turbine worm gear transmission.

[0053] It should be noted that, in other embodiments, the driving source 41 may also be a linear motor, which drives the first transmission member 431 to move, and the first transmission member 431 meshes with the second transmission member 432, so that the linear motor can drive the speed regulating wheel 42 to rotate; wherein the first transmission member 431 may be a rack, and the second transmission member 432 may be a gear. The driving source 41 may also directly drive the speed regulating wheel 42 to rotate, for example, the rotary motor directly drives the speed regulating wheel 42 to rotate. The driving source 41 and the speed regulating wheel 42 may also be belt driven, chain driven, etc.

[0054] See also Figure 2 and Figure 3 , limited by the setting method of the driving source 41 and the speed regulating wheel 42, for example, there is a large height difference between the driving source 41 and the speed regulating wheel 42, the transmission mechanism 43 also includes a third transmission member 433, the third transmission member 433 is rotatably arranged on the base 1, the rotating shaft between the third transmission member 433 and the base 1 and the rotating shaft between the speed regulating wheel 42 and the base 1 are parallel to each other, the third transmission member 433 is respectively engaged with the first transmission member 431 and the second transmission member 432, and the height difference between the driving source 41 and the speed regulating wheel 42 is eliminated by the third transmission member 433, so that the power of the driving source 41 is transmitted to the speed regulating wheel 42. According to actual needs, the first transmission member 431 and the third transmission member 433, as well as the second transmission member 432 and the third transmission member 433 can be turbine and worm gear transmissions to prevent the offset distance of the speed-changing wheel 3 from being difficult to adjust due to the excessive rotation speed of the rotating motor. For example, the first transmission member 431 can be a worm gear, the second transmission member 432 can be a worm gear, and the third transmission member 433 can be a turbine.

[0055] See also Figure 2 and Figure 3The transmission mechanism 43 also includes a rotating shaft 435 and a fourth transmission member 434. The rotating shaft 435 is rotatably arranged on the base 1, and the central axis of the rotating shaft 435 and the base 1 are parallel to each other. The third transmission member 433 is fixed to the end of the rotating shaft 435 away from the base 1; the fourth transmission member 434 is fixed to the end of the rotating shaft 435 close to the base 1, and the fourth transmission member 434 is meshed with the second transmission member 432; wherein, the first transmission member 431 can be a worm, the second transmission member 432 can be a gear, the third transmission member 433 can be a turbine, and the fourth transmission member 434 can be a gear. Arranging the turbine on the rotating shaft 435 can reduce the load weight of the driving source 41 compared to arranging it on the driving source 41; the second transmission member 432 and the fourth transmission member 434 are gear transmissions, which can improve the stability of the rotation of the speed regulating wheel 42.

[0056] It should be noted that the fourth transmission member 434 can be integrally provided with the rotating shaft 435 , and the second transmission member 432 can be integrally provided with the speed regulating wheel 42 , which is convenient for processing and molding and also helps to improve the stability of transmission between the second transmission member 432 and the fourth transmission member 434 .

[0057] See also Figure 1 , Figure 2 and Figure 3 The adjustment component 4 also includes a mounting seat 44, which is fixed to the base 1 and is provided with a receiving chamber 4411. The rotating shaft 435, the first transmission member 431, the second transmission member 432, the third transmission member 433 and the fourth transmission member 434 are all received in the receiving chamber 4411, which can prevent debris from falling on the first transmission member 431, the second transmission member 432, the third transmission member 433 and the fourth transmission member 434, thereby improving the smoothness and stability of the transmission. The transmission mechanism 43 also includes a first bearing 436 and a second bearing 437, wherein the first bearing 436 is respectively connected to the mounting seat 44 and the end of the rotating shaft 435 away from the base 1, and the second bearing 437 is respectively connected to the mounting seat 44 and the end of the rotating shaft 435 close to the base 1. The rotating shaft 435 is rotatably arranged on the mounting seat 44 through the first bearing 436 and the second bearing 437, which is conducive to improving the smoothness of the rotation of the rotating shaft 435. According to actual needs, the first bearing 436 and the second bearing 437 can both be ball bearings, the outer ring of the ball bearing is installed on the mounting seat 44, and the inner ring is sleeved on the rotating shaft 435.

[0058] See also Figure 2 and Figure 3The driving source 41 includes a driving part 411 and an output shaft 412. The driving part 411 is fixed to the base 1 and is arranged on the outside of the mounting seat 44. One end of the output shaft 412 is connected to the driving part 411 and the other end passes through the mounting seat 44. The first transmission member 431 is sleeved on the outside of the output shaft 412. The driving part 411 drives the output shaft 412 to rotate, and the first transmission member 431 rotates with the output shaft 412; wherein the first transmission member 431 can be screwed to the output shaft 412. The adjusting assembly 4 also includes a first limiting ring 45 and a second limiting ring 46, which are respectively sleeved on both ends of the output shaft 412 and accommodated in the accommodating cavity 4411, and the first transmission member 431 is arranged between the first limiting ring 45 and the second limiting ring 46. One end of the first limiting ring 45 and the second limiting ring 46 away from the first transmission member 431 respectively abuts against the opposite side walls of the accommodating cavity 4411, and the first limiting ring 45 and the second limiting ring 46 can prevent the first transmission member 431 from axial movement, thereby improving the transmission stability between the first transmission member 431 and the third transmission member 433.

[0059] See also Figure 2 and Figure 3 The mounting seat 44 is provided with a first mounting hole 4413 and a second mounting hole 4414. The transmission mechanism 43 further includes a third bearing 438 and a fourth bearing 439. The third bearing 438 and the fourth bearing 439 are respectively mounted in the first mounting hole 4413 and the second mounting hole 4414. The third bearing 438 and the fourth bearing 439 are respectively sleeved at both ends of the output shaft 412 to improve the smoothness of the rotation of the output shaft 412. The end of the output shaft 412 away from the driving part 411 extends out of the mounting seat 44, and the end of the output shaft 412 extending out of the mounting seat 44 is fixed with a protective sleeve 413, which can prevent the output shaft 412 from being exposed to the outside. According to actual needs, the third bearing 438 and the fourth bearing 439 can both be ball bearings, and the inner rings of the third bearing 438 and the fourth bearing 439 are sleeved on the outer side of the output shaft 412, and the outer rings are assembled on the mounting seat 44. The mounting seat 44 is also provided with a locking hole 4412 , and the connecting plate is locked in the locking hole 4412 by means of screws, thereby connecting the connecting plate and the mounting seat 44 .

[0060] See also Figure 2 and Figure 3The mounting base 44 includes a housing 441, an upper cover plate 442 and a lower cover plate 443. The upper cover plate 442 and the lower cover plate 443 are detachably connected to the two ends of the housing 441, and the upper cover plate 442, the lower cover plate 443 and the housing 441 are enclosed together to form a receiving cavity 4411. The first transmission member 431 and the third transmission member 433 are arranged opposite to the upper cover plate 442, and the fourth transmission member 434 is arranged opposite to the lower cover plate 443. When the upper cover plate 442 and the lower cover plate 443 are removed, it is convenient to inspect and repair the first transmission member 431, the third transmission member 433 and the fourth transmission member 434.

[0061] See also Figure 4 , Figure 6 and Figure 7 The continuously variable transmission also includes an eccentric seat 6, which is sleeved on the outer side of the base 1 and slidably assembled on the base 1 along the radial direction of the base 1. The speed generating wheel 3 is rotatably arranged on the outer side of the eccentric seat 6, and the speed generating wheel 3 is fixed to the eccentric seat 6 in the radial direction of the base 1, so that the speed generating wheel 3 can move along the radial direction of the base 1 following the eccentric seat 6. Among them, the eccentric seat 6 is provided with a fifth transmission member 61, and the speed regulating wheel 42 is provided with a sixth transmission member 421. The fifth transmission member 61 is meshed with the sixth transmission member 421, so that the speed regulating wheel 42 drives the eccentric seat 6 to slide relative to the base 1, so that the eccentric seat 6 drives the speed generating wheel 3 to move eccentrically relative to the first power wheel 2. According to actual needs, the fifth transmission member 61 can be a rack, and the length of the rack extends along the radial direction of the base 1; the sixth transmission member 421 and the second transmission member 432 are respectively arranged at both ends of the speed regulating wheel 42, and the sixth transmission member 421 can be a gear, and the gear and the speed regulating wheel 42 are integrally arranged.

[0062] See also Figure 5 and Figure 6 The eccentric seat 6 is provided with a clearance hole 62, the length of which extends along the radial direction of the base 1, and a notch 11 is provided on the circumferential surface of the base 1. The base 1 is slidably assembled in the clearance hole 62, and the notch 11 is at least partially located in the clearance hole 62, so that sufficient space can be provided to allow the eccentric seat 6 to slide relative to the base 1 along the radial direction of the base 1.

[0063] See also Figures 4 to 7, a first annular mounting groove 31 is provided on the side of the speed change generating wheel 3 close to the first power wheel 2, the first mounting groove 31 is coaxially arranged with the speed change generating wheel 3, and a plurality of first locking members 5 are slidably assembled in the first mounting groove 31; wherein, the first locking member 5 is arranged in the first mounting groove 31, which can ensure that the first locking member 5 slides along the circumferential direction of the base 1, and can also ensure that the first locking member 5 is fixed to the speed change generating wheel 3 in the radial direction of the base 1. A first connecting groove 21 is provided on the side of the first power wheel 2 close to the speed change generating wheel 3, and a plurality of first connecting grooves 21 are provided, and the plurality of first connecting grooves 21 are spaced apart around the central axis of the first power wheel 2, and the plurality of first locking members 5 are slidably connected to the plurality of first connecting grooves 21 in a one-to-one correspondence; wherein, the first locking member 5 is arranged in the first connecting groove 21, which can ensure that the first locking member 5 slides along the radial direction of the base 1, and can also ensure that the first locking member 5 is fixed to the first power wheel 2 in the circumferential direction of the base 1.

[0064] See also Figure 5 and Figure 6 In a specific example, eight first locking members 5 may be provided, and eight first connecting grooves 21 evenly spaced are provided on the first power wheel 2. The eight first locking members 5 are distributed in the first installation groove 31, and the eight first locking members 5 are slidably assembled in the eight first connecting grooves 21 in a one-to-one correspondence. The angles between any two adjacent first locking members 5 are different, and there are countless angles between the two adjacent first locking members 5. When the speed change generating wheel 3 and the first power wheel 2 are eccentrically arranged, the first power wheel 2 is rotated clockwise, and the first power wheel 2 drives the first locking members 5 to rotate. The eight first locking members 5 undergo continuous linear velocity changes and angular velocity changes in the first installation groove 31, and only the first locking member 5 with the largest linear velocity is fixed to the speed change generating wheel 3, and the remaining seven first locking members 5 follow in the first installation groove 31. The first power wheel 2 is rotated continuously, and the linear velocity of each first locking member 5 changes continuously. The first locking member 5 at the maximum linear velocity will automatically lock the speed change generating wheel 3 to relay the speed change generating wheel 3 to rotate, thereby completing the speed change.

[0065] The principle of continuously variable speed change is explained below:

[0066] See also Figure 6 and Figure 7 , the minimum angle between two adjacent first locking members 5 is N, the maximum angle is M (M is greater than N), the value of M divided by N is the maximum speed range, and the eccentric distance between the speed change generating wheel 3 and the first power wheel 2 determines the maximum speed ratio. In the process of two adjacent first locking members 5 sliding counterclockwise from the minimum angle N to the maximum angle M, the angle between the two adjacent first locking members 5 will continuously increase from N to M to form countless angles, thereby forming a stepless speed change.

[0067] See also Figure 5 , Figure 8 and Fig. 9 The first locking member 5 includes a first sliding seat 51, a first locking portion 53, a first elastic member 54 and a first guide portion 52. The first sliding seat 51 is slidably assembled in the first mounting groove 31. The first sliding seat 51 is provided with a first accommodating groove 511. The first mounting groove 31 is provided with a first inner side wall 311 and a first outer side wall 312 which are relatively distributed. The notch of the first accommodating groove 511 is arranged opposite to the first outer side wall 312. Both sides of the first sliding seat 51 are adapted to the first inner side wall 311 and the first outer side wall 312, which is conducive to the first sliding seat 51 sliding in the first mounting groove 31, and the first sliding seat 51 abuts against the first inner side wall 311. The first guide portion 52 is fixed to the bottom wall of the first sliding seat 51 and the notch of the first receiving groove 511. The first guide portion 52 is provided with a first guide slope 521 on one side thereof and the notch of the first receiving groove 511. The first guide slope 521 is inclined from the top to the bottom along the first direction; wherein the distance between the top of the first guide slope 521 and the first outer side wall 312 is smaller than the distance between the bottom of the first guide slope 521 and the first outer side wall 312. The first locking portion 53 is received in the first receiving groove 511. One side of the first locking portion 53 is slidably assembled on the first guide slope 521 and the other side is abutted against the first outer side wall 312. The side of the first locking portion 53 in contact with the first outer side wall 312 is adapted to the first outer side wall 312. The first locking portion 53 and the first sliding seat 51 jointly lock the first locking member 5 on the speed generating wheel 3. The first elastic member 54 is received in the first receiving groove 511 , one end of the first elastic member 54 is connected to the first locking portion 53 , and the other end is connected to the first sliding seat 51 . The first elastic member 54 is used to provide elastic force to drive the first locking portion 53 to move toward the top of the first guiding inclined surface 521 .

[0068] According to actual needs, the width of both sides of the first sliding seat 51 is smaller than the groove width of the first mounting groove 31, and both sides of the first sliding seat 51 are arc surfaces, and the arc surface on one side of the first sliding seat 51 abutting against the first inner wall 311 is concave, and the arc surface on the other side is convex; the first guide portion 52 can be integrally or separately arranged with the first sliding seat 51, and the first guide portion 52 can be a wedge block; the first locking portion 53 can be a cylinder; the first elastic member 54 can be a spring.

[0069] It should be noted that, when the first power wheel 2 is rotated clockwise, the first sliding seat 51 abuts against the first inner wall 311, the first locking portion 53 is located at the top end of the first guide portion 52, and the first locking portion 53 abuts against the first outer wall 312, so that the first locking member 5 is in a locked state fixed to the speed shifting wheel 3; when the first power wheel 2 is rotated counterclockwise, the first locking portion 53 is located at the bottom end of the first guide portion 52, and there is a gap between the first locking portion 53 and the first outer wall 312, so that the first locking member 5 can slide relative to the speed shifting wheel 3.

[0070] See also Figure 8 and Fig. 9 , the first locking member 5 also includes a first connecting portion 55, a first protective sleeve 56 and a first friction block 57. The first connecting portion 55 is fixed to the end of the first sliding seat 51 away from the speed change generating wheel 3, and the first connecting portion 55 is slidably assembled in the first connecting groove 21; the first protective sleeve 56 is sleeved on the outer side of the first connecting portion 55, and the first protective sleeve 56 and the first connecting portion 55 are detachably connected. The first protective sleeve 56 can protect the first connecting portion 55, and it is convenient to replace the first protective sleeve 56 after it is worn, thereby reducing maintenance costs. The first friction block 57 is detachably arranged on the side of the first sliding seat 51 close to the speed change generating wheel 3, and the first friction block 57 contacts the bottom wall of the first mounting groove 31. The first friction block 57 is arranged to protect the first sliding seat 51, and it is convenient to replace the first friction block 57 after it is worn, thereby reducing maintenance costs. According to actual needs, the first protective sleeve 56 can be made of wear-resistant material, and the first protective sleeve 56 and the first connecting portion 55 can be plug-in connected, and the first friction block 57 and the first sliding seat 51 can be plug-in connected.

[0071] See also Figure 4 and Figure 5 The continuously variable transmission further comprises a first inner friction ring 9, a first outer friction ring 10 and a third stop ring 20. The first inner friction ring 9 is fixed on the first inner wall 311, and the first outer friction ring 10 is fixed on the first outer wall 312. The first inner friction ring 9 and the first outer friction ring 10 are provided to prevent the speed change generating wheel 3 from being worn. The third stop ring 20 is fixed on the speed change generating wheel 3 and is provided above the first installation groove 31. The third stop ring 20 is used to prevent the first locking member 5 from shaking up and down in the first installation groove 31.

[0072] See also Figure 1 , Figure 5 and Figure 6, the continuously variable transmission also includes a second power wheel 7 and a second locking member 8. The second power wheel 7 is rotatably arranged on the outside of the base 1 and is located on the side of the speed generating wheel 3 away from the first power wheel 2. The second power wheel 7 is coaxially arranged with the base 1; the second locking member 8 is slidably assembled on the speed generating wheel 3 along the circumferential direction of the base 1 and is slidably connected to the second power wheel 7 along the radial direction of the base 1. The second locking member 8 is fixed to the speed generating wheel 3 in the radial direction of the base 1, and is fixed to the second power wheel 7 in the circumferential direction of the base 1, so that when the speed generating wheel 3 rotates, the second power wheel 7 can be driven to rotate by the second locking member 8, and the speed generating wheel 3 can drive the second power wheel 7 to rotate. The second locking members 8 are moved to an eccentric setting relative to the second power wheel 7; there are multiple second locking members 8, and the multiple second locking members 8 are distributed in the circumferential direction of the speed shift generating wheel 3 and enclose a concentric circle coaxially set with the speed shift generating wheel 3; wherein the second locking members 8 have a locked state in which they can be fixed to the speed shift generating wheel 3 along a first direction, and an unlocked state in which they can slide relative to the speed shift generating wheel 3 along a second direction. When the speed shift generating wheel 3 is eccentric relative to the second power wheel 7 and each of the second locking members 8 slides along the first direction, only the second locking member 8 with the largest linear velocity is fixed to the speed shift generating wheel 3.

[0073] The driving source 41 drives the speed regulating wheel 42 to rotate. When the speed generating wheel 3 moves a certain distance along the radial direction of the base 1 under the drive of the speed regulating wheel 42, the speed generating wheel 3 is eccentrically arranged relative to the second power wheel 7, and the concentric circles formed by the second locking members 8 and coaxially arranged with the speed generating wheel 3 are eccentrically arranged relative to the second power wheel 7. When the speed generating wheel 3 rotates in the first direction, each second locking member 8 can undergo continuous linear velocity changes and angular velocity changes on the speed generating wheel 3. Only the second locking member 8 with the largest linear velocity is fixed to the speed generating wheel 3, and the remaining second locking members 8 follow the speed generating wheel 3. The second power wheel 7 rotates synchronously with the second locking member 8 with the largest linear velocity, so that the eccentric distance of the speed generating wheel 3 relative to the second power wheel 7 can be changed by adjusting the speed regulating wheel 42, and the maximum linear velocity of the second locking member 8 can be changed, so that the rotation speed of the second power wheel 7 can be changed, and the rotation speed adjustment of the second power wheel 7 can be completed, and stepless speed change can be realized.

[0074] It should be noted that a continuously variable transmission mechanism is formed between the first power wheel 2, the speed change generating wheel 3 and the first locking member 5, and another continuously variable transmission mechanism is formed between the second power wheel 7, the speed change generating wheel 3 and the second locking member 8, so that the continuously variable transmission in the present invention is a two-stage speed change. Among them, the first power wheel 2 can be used as a speed input wheel, and the second power wheel 7 can be used as a speed output wheel.

[0075] It should be understood that the second power wheel 7, the second locking member 8 and the speed generating wheel 3 constitute an overrunning clutch; wherein, taking the speed generating wheel 3 as the speed input wheel for example, when the speed generating wheel 3 rotates clockwise, the second locking member 8 and the speed generating wheel 3 are fixed to each other, and all the second locking members 8 rotate clockwise with the speed generating wheel 3, and all the second locking members 8 drive the second power wheel 7 to rotate clockwise; when the speed generating wheel 3 rotates counterclockwise, all the second locking members 8 can slide relative to the speed generating wheel 3, and the second power wheel 7 remains stationary.

[0076] See also Figure 4 and Figure 5 , a second annular mounting groove 32 is provided on one side of the speed change generating wheel 3 close to the second power wheel 7, the second mounting groove 32 is coaxially arranged with the speed change generating wheel 3, and a plurality of second locking members 8 are slidably assembled in the second mounting groove 32; wherein, the second locking member 8 is arranged in the second mounting groove 32 to ensure that the second locking member 8 slides along the circumferential direction of the base 1, and the second locking member 8 is fixed to the speed change generating wheel 3 in the radial direction of the base 1. A second connecting groove 71 is provided on both sides of the second power wheel 7 close to the speed change generating wheel 3, the length of which extends along the radial direction of the base 1, and a plurality of second connecting grooves 71 are provided, and the plurality of second connecting grooves 71 are spaced apart around the central axis of the second power wheel 7, and the plurality of second locking members 8 are slidably connected to the plurality of second connecting grooves 71 in a one-to-one correspondence; wherein, the second locking member 8 is arranged in the second connecting groove 71 to ensure that the second locking member 8 slides along the radial direction of the base 1, and the second locking member 8 is fixed to the second power wheel 7 in the circumferential direction of the base 1.

[0077] See also Figure 4 and Figure 5 In a specific example, eight second locking members 8 may be provided, and eight second connecting grooves 71 evenly spaced are provided on the second power wheel 7. The eight second locking members 8 are distributed in the second installation groove 32, and the eight second locking members 8 are slidably assembled in the eight second connecting grooves 71 in a one-to-one correspondence. The angles between any two adjacent second locking members 8 are different, and there are countless angles between any two adjacent second locking members 8. When the speed generating wheel 3 and the second power wheel 7 are eccentrically arranged, the speed generating wheel 3 is rotated clockwise, and only the second locking member 8 with the largest linear velocity is fixed to the speed generating wheel 3, and the remaining seven second locking members 8 follow in the second installation groove 32. By continuously rotating the speed generating wheel 3, the linear velocity of each second locking member 8 changes continuously, and the second locking member 8 at the maximum linear velocity will automatically lock the speed generating wheel 3 to relay and drive the second power wheel 7 to rotate, thereby completing the speed change.

[0078] See also Figure 5 , Fig.10 and Fig.11The second locking member 8 includes a second sliding seat 81, a second guide portion 82, a second locking portion 83 and a second elastic portion. The second sliding seat 81 is slidably assembled in the second mounting groove 32. The second sliding seat 81 is provided with a second accommodating groove 811. The second mounting groove 32 is provided with a second inner side wall 321 and a second outer side wall 322 that are relatively distributed. The notch of the second accommodating groove 811 is arranged opposite to the second outer side wall 322. Both sides of the second sliding seat 81 are adapted to the second inner side wall 321 and the second outer side wall 322, which is conducive to the second sliding seat 81 sliding in the second mounting groove 32, and the second sliding seat 81 abuts against the second inner side wall 321. The second guide portion 82 is fixed to the bottom wall of the second sliding seat 81 and the notch of the second receiving groove 811. A second guide slope 821 is provided on one side of the second guide portion 82 and the notch of the second receiving groove 811. The second guide slope 821 is inclined from the top to the bottom along the second direction; wherein the distance between the top of the second guide slope 821 and the second outer side wall 322 is smaller than the distance between the bottom of the second guide slope 821 and the second outer side wall 322. The second locking portion 83 is accommodated in the second receiving groove 811. One side of the second locking portion 83 is slidably assembled on the second guide slope 821 and the other side is abutted against the second outer side wall 322. The side of the second locking portion 83 that contacts the second outer side wall 322 is adapted to the second outer side wall 322. The second locking portion 83 and the second sliding seat 81 jointly lock the second locking member 8 on the speed generating wheel 3. The second elastic member 84 is received in the second receiving groove 811 , one end of the second elastic member 84 is connected to the second locking portion 83 , and the other end is connected to the second sliding seat 81 . The second elastic member 84 is used to provide elastic force to drive the second locking portion 83 to move toward the top of the second guiding inclined surface 821 .

[0079] According to actual needs, the width of both sides of the second sliding seat 81 is smaller than the groove width of the second mounting groove 32, and both sides of the second sliding seat 81 are arc surfaces, and the two arc surfaces on the second sliding seat 81 that abut against the second inner wall 321 are concave, and the arc surface on the other side is convex; the second guide portion 82 can be integrally or separately arranged with the second sliding seat 81, and the second guide portion 82 can be a wedge block; the second locking portion 83 can be a cylinder; the second elastic member 84 can be a spring.

[0080] It should be noted that, when the speed shift generating wheel 3 is rotated clockwise, the second sliding seat 81 abuts against the second inner wall 321, the second locking portion 83 is located at the top end of the second guide portion 82, and the second locking portion 83 abuts against the second outer wall 322, so that the second locking member 8 is in a locked state fixed to the speed shift generating wheel 3; when the speed shift generating wheel 3 is rotated counterclockwise, the second locking portion 83 is located at the bottom end of the second guide portion 82, and there is a gap between the second locking portion 83 and the second outer wall 322, so that the second locking member 8 can slide relative to the speed shift generating wheel 3.

[0081] See also Fig.10 and Fig.11 The second locking member 8 also includes a second connecting portion 85, a second protective sleeve 86 and a second friction block 87. The second connecting portion 85, the second protective sleeve 86 and the second friction block 87 in the second locking member 8 are arranged in the same manner as the first connecting portion 55, the first protective sleeve 56 and the first friction block 57 in the first locking member 5, and are not described repeatedly here.

[0082] It should be noted that the first locking member 5 and the second locking member 8 in the embodiment of the present invention do not need to be triggered by an external trigger structure so that they can be fixed to the speed change generating wheel 3 or can slide relative to the speed change generating wheel 3, so that the first locking member 5 and the second locking member 8 can be subtracted from the components that cooperate with the trigger structure, which greatly simplifies the structure of the first locking member 5 and the second locking member 8.

[0083] See also Figure 4 and Figure 5 The continuously variable transmission further comprises a second inner friction ring 30, a second outer friction ring 40 and a fourth stop ring 50. The second inner friction ring 30 is fixed on the second inner wall 321, and the second outer friction ring 40 is fixed on the second outer wall 322. The second inner friction ring 30 and the second outer friction ring 40 can prevent the speed change generating wheel 3 from being worn. The fourth stop ring 50 is fixed on the speed change generating wheel 3 and is arranged above the second installation groove 32. The fourth stop ring 50 is used to prevent the second locking member 8 from shaking up and down in the second installation groove 32.

[0084] See also Figure 1 , Figure 4 and Figure 6 The continuously variable transmission further includes a fifth bearing 60, a sixth bearing 70, a seventh bearing 80 and an eighth bearing 90. The speed regulating wheel 42 is rotatably arranged in the base 1 through the fifth bearing 60, the first power wheel 2 is rotatably arranged outside the base 1 through the sixth bearing 70, the speed generating wheel 3 is rotatably arranged outside the eccentric seat 6 through the seventh bearing 80, and the second power wheel 7 is rotatably arranged outside the base 1 through the eighth bearing 90. A support plate 12 is also arranged on the base 1, and the eccentric seat 6 is slidably assembled on the support plate 12.

[0085] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuously variable transmission, characterized in that: include: Pedestal; A first power wheel, rotatably disposed on the outer side of the base, wherein the first power wheel is coaxially disposed with the base; A speed-changing generating wheel is rotatably arranged outside the base and located on one side of the first power wheel. The speed-changing generating wheel is slidably assembled on the base along the radial direction of the base. The rotating shaft between the speed-changing generating wheel and the base is parallel to or coaxial with the central axis of the base. An adjusting assembly, comprising a driving source and a speed regulating wheel, wherein the driving source is arranged on the base, the speed regulating wheel is rotatably arranged on the base, the speed regulating wheel is respectively connected to the driving source and the speed generating wheel, the driving source is used to drive the speed regulating wheel to rotate relative to the base, and the speed regulating wheel is used to drive the speed generating wheel to slide, so that the speed generating wheel is eccentrically arranged relative to the first power wheel; and A first locking member is slidably assembled on the speed-changing generating wheel along the circumferential direction of the base and is slidably connected to the first power wheel along the radial direction of the base. The first locking member is fixed to the speed-changing generating wheel in the radial direction of the base and to the first power wheel in the circumferential direction of the base. A plurality of the first locking members are provided. The plurality of the first locking members are distributed in the circumferential direction of the speed-changing generating wheel and enclose a concentric circle coaxially arranged with the speed-changing generating wheel. Among them, the first locking member has a locked state in which it can be fixed to the speed generating wheel along a first direction, and an unlocked state in which it can slide relative to the speed generating wheel along a second direction. The first direction is opposite to the second direction. When the speed generating wheel is eccentric relative to the first power wheel and each of the first locking members slides along the first direction, only the first locking member with the largest linear velocity is fixed to the speed generating wheel.

2. The continuously variable transmission according to claim 1, characterized in that: The adjustment component also includes a transmission mechanism, which includes a first transmission member and a second transmission member. The first transmission member is arranged on the driving source, and the second transmission member is arranged on the speed regulating wheel. The first transmission member is meshed with the second transmission member so that the driving source drives the speed regulating wheel to rotate.

3. The continuously variable transmission according to claim 2, characterized in that: The transmission mechanism also includes a third transmission member, which is rotatably arranged on the base. The rotating shaft between the third transmission member and the base and the rotating shaft between the speed regulating wheel and the base are parallel to each other. The third transmission member is respectively engaged with the first transmission member and the second transmission member.

4. The continuously variable transmission according to claim 3, characterized in that: The transmission mechanism also includes: A rotating shaft is rotatably disposed on the base, the rotating shaft and the central axis of the base are parallel to each other, and the third transmission member is fixed to an end of the rotating shaft away from the base; and A fourth transmission member is fixed to one end of the rotating shaft close to the base, and the fourth transmission member is meshed with the second transmission member.

5. The continuously variable transmission according to claim 4, characterized in that: The adjustment assembly further includes a mounting seat, which is fixed to the base and is provided with a receiving cavity, and the rotating shaft, the first transmission member, the second transmission member, the third transmission member, and the fourth transmission member are all received in the receiving cavity; The transmission mechanism further includes a first bearing and a second bearing, wherein the first bearing is respectively connected to the mounting seat and an end of the rotating shaft away from the base, and the second bearing is respectively connected to the mounting seat and an end of the rotating shaft close to the base.

6. The continuously variable transmission according to claim 5, characterized in that: The driving source includes a driving part and an output shaft, wherein the driving part is fixed to the base and arranged outside the mounting seat, one end of the output shaft is connected to the driving part and the other end passes through the mounting seat, and the first transmission member is sleeved outside the output shaft; The adjustment assembly also includes a first limiting ring and a second limiting ring, the first limiting ring and the second limiting ring are respectively mounted on both ends of the output shaft and accommodated in the accommodating cavity, the first transmission member is arranged between the first limiting ring and the second limiting ring, and one end of the first limiting ring and the second limiting ring away from the first transmission member respectively abuts against the opposite side walls of the accommodating cavity.

7. The continuously variable transmission according to claim 1, characterized in that: The continuously variable transmission also includes an eccentric seat, which is sleeved on the outer side of the base and slidably assembled on the base along the radial direction of the base, and the speed change generating wheel is rotatably arranged on the outer side of the eccentric seat, and the speed change generating wheel is fixed to the eccentric seat in the radial direction of the base; Wherein, the eccentric seat is provided with a fifth transmission member, the speed regulating wheel is provided with a sixth transmission member, and the fifth transmission member is meshed with the sixth transmission member so that the speed regulating wheel drives the eccentric seat to slide relative to the base.

8. The continuously variable transmission according to claim 7, characterized in that: The eccentric seat is provided with a clearance through hole, and the length of the clearance through hole extends along the radial direction of the base; A notch is provided on the peripheral surface of the base, the base is slidably assembled in the clearance through hole, and the notch is at least partially located in the clearance through hole.

9. The continuously variable transmission according to claim 1, characterized in that: The continuously variable transmission further comprises: a second power wheel, rotatably disposed outside the base and located on a side of the speed-changing generating wheel away from the first power wheel, the second power wheel being coaxially disposed with the base; and A second locking member is slidably assembled on the speed-changing generating wheel along the circumferential direction of the base and is slidably connected to the second power wheel along the radial direction of the base. The second locking member is fixed to the speed-changing generating wheel in the radial direction of the base and to the second power wheel in the circumferential direction of the base. A plurality of second locking members are provided. The plurality of second locking members are distributed in the circumferential direction of the speed-changing generating wheel and enclose a concentric circle coaxially arranged with the speed-changing generating wheel. Among them, the second locking member has a locked state in which it can be fixed to the speed shift generating wheel along the first direction, and an unlocked state in which it can slide relative to the speed shift generating wheel along the second direction. When the speed shift generating wheel is eccentric relative to the second power wheel and each of the second locking members slides along the first direction, only the second locking member with the largest linear velocity is fixed to the speed shift generating wheel.

10. A bicycle, characterized in that: Comprising a continuously variable transmission as claimed in any one of claims 1-9.

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