CONTINUOUSLY VARIABLE DRIVE MECHANISM AND BICYCLES

Abstract

The invention proposes a continuously variable transmission mechanism and a bicycle. The continuously variable transmission mechanism comprises: a base; a first drive wheel; a variable drive wheel, one side of which is equipped with several first-level limiting structures evenly distributed along the circumference of the variable drive wheel; first-level locking elements, assembled sliding on one side of the variable drive wheel and having a locked state, in which the first-level locking elements are fixed to the first drive wheel, and an unlocked state, in which the first-level locking elements can slide along the circumference of the first drive wheel; and a first speed control wheel, assembled rotating on the outer surface of the base, the first speed control wheel and the first drive wheel arranged coaxially, and the first speed control wheel equipped with a first-level actuating structure used to switch the first-level locking elements between the locked and unlocked states.When the speed of the first drive wheel remains constant, rotating the first speed control wheel can change the rotational speed of the variable drive wheel, thereby implementing continuous variable drive and satisfying the individual pedaling force adjustment requirements when cycling.

Description

Continuously variable transmission and bicycle Technical Field

[0001] The present 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, bicycles or power-assisted bicycles use stepped transmissions, which are divided into internal and external transmissions. 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. These transmissions cannot meet people's personalized adjustment needs for pedaling force when riding. In addition, the internal transmission is heavy, and the external transmission is prone to chain drop when shifting gears, resulting in certain defects in the transmissions on bicycles or power-assisted bicycles. Technical issues

[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 in the related art that the stepless transmission used in bicycles cannot meet the demand for personalized adjustment of pedaling force. Technical Solutions

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

[0005] base;

[0006] a first power wheel rotatably mounted on the outer side of the base;

[0007] a speed-changing generating wheel rotatably mounted on the outer side of the base, wherein the axis of the speed-changing generating wheel is eccentrically arranged relative to the axis of the first power wheel, and a plurality of first limiting structures are provided on one side of the speed-changing generating wheel and are distributed at equal intervals along the circumference thereof;

[0008] A first locking member is slidably assembled on one side of the speed-changing generating wheel and has a locked state fixed with the first power wheel and an unlocked state capable of sliding along the circumference of the first power wheel. A plurality of first locking members are arranged at intervals, and a plurality of first locking members are matched with a plurality of first limiting structures in a one-to-one correspondence, so that the first locking member slides along the radial direction of the speed-changing generating wheel and rotates circumferentially with the speed-changing generating wheel; a plurality of first locking members enclose and form a concentric circle coaxially arranged with the first power wheel, and at least one of the plurality of first locking members is in a locked state, and at least one is in an unlocked state; and,

[0009] The first speed regulating wheel is rotatably assembled on the outer side of the base. The first speed regulating wheel is coaxially arranged with the first power wheel. The first speed regulating wheel is provided with a first trigger structure for switching the first locking member between the locked state and the unlocked state.

[0010] Optionally, the first limiting structure includes a first sliding groove arranged on the speed change generating wheel, and the length of the first sliding groove extends along the radial direction of the speed change generating wheel; the first locking member is provided with a first sliding portion, and the first sliding portion is slidably assembled in the first sliding groove, and the two sides of the first sliding portion respectively abut against the opposite side walls of the first sliding groove.

[0011] Optionally, both ends of each first sliding groove are enclosed to form a concentric circle coaxially arranged with the speed change generating wheel.

[0012] Optionally, an annular mounting groove coaxially arranged with the first power wheel is provided on the side of the first power wheel close to the speed change generating wheel, and each first locking member is accommodated in the annular mounting groove; the first locking member is also provided with a first locking structure, and the first locking structure cooperates with the first trigger structure to fix the first locking member in the annular mounting groove in the locked state, or to slide the first locking member in the annular mounting groove in the unlocked state.

[0013] Optionally, the first locking structure includes a resistance portion that contacts the inner wall of the annular mounting groove, and a locking portion that cooperates with the resistance portion and is arranged opposite to the outer wall of the annular mounting groove. The resistance portion is used to drive the locking portion to move to abut against the outer wall of the annular mounting groove or separate from the outer wall of the annular mounting groove when triggered by the first trigger structure.

[0014] Optionally, the first trigger structure is a raised area and a recessed area arranged on one side surface of the first speed regulating wheel, and the raised area and the recessed area enclose a concentric circle coaxially arranged with the annular mounting groove; wherein, when the interference portion contacts the recessed area, the interference portion drives the locking portion to move toward the outer side wall away from the annular mounting groove; when the interference portion contacts the raised area, the interference portion drives the locking portion to move toward the outer side wall close to the annular mounting groove.

[0015] Optionally, the first speed regulating wheel includes a first sleeve portion and a first support portion extending outward from the circumferential side of one end of the first sleeve portion, the first trigger structure is arranged on the first support portion, and the continuously variable transmission also includes a first connecting ring mounted and fixed on the outside of the first sleeve portion, the first power wheel is rotatably assembled on the outside of the first connecting ring, and at least a portion of the first power wheel is arranged between the first connecting ring and the first support portion.

[0016] Optionally, the continuously variable transmission further comprises:

[0017] a second power wheel rotatably mounted on the outer side of the base, the speed change generating wheel being arranged between the first power wheel and the second power wheel, and a plurality of second limiting structures being equally spaced along the circumference of the speed change generating wheel being provided on the other side thereof;

[0018] The second locking member is slidably assembled on the other side of the speed-changing generating wheel and has a locked state connected to the second power wheel and an unlocked state capable of sliding along the circumference of the second power wheel. A plurality of second locking members are arranged at intervals, and a plurality of second locking members are matched with a plurality of second limiting structures in a one-to-one correspondence, so that the second locking member slides along the radial direction of the speed-changing generating wheel and rotates circumferentially with the speed-changing generating wheel; the plurality of second locking members enclose a concentric circle coaxially arranged with the second power wheel, and at least one of the plurality of second locking members is in a locked state, and at least one is in an unlocked state; and,

[0019] The second speed regulating wheel is rotatably assembled on the outer side of the base, the second speed regulating wheel is coaxially arranged with the second power wheel, and the second speed regulating wheel is provided with a second trigger structure for switching the second locking member between the locked state and the unlocked state.

[0020] Optionally, the continuously variable transmission further includes a first gear set meshing with the first speed regulating wheel, and a second gear set meshing with the first gear set and the second speed regulating wheel respectively, and the first gear set and the second gear set are both mounted on the base.

[0021] A second aspect of the present invention provides a bicycle comprising the continuously variable transmission as described above. Beneficial effects

[0022] Compared with the related art, the continuously variable transmission and bicycle of the present invention have the following advantages: the first power wheel and the speed generating wheel are connected by a first locking member, so that when the first power wheel rotates, the speed generating wheel can be driven to rotate, and the first locking member can slide along the radial direction of the speed generating wheel and rotate circumferentially with the speed generating wheel. The multiple first locking members enclose a concentric circle coaxially arranged with the first power wheel, so that the speed corresponding to each first locking member position is different; when the first speed regulating wheel rotates, the first trigger structure can switch the first locking member between a locked state and an unlocked state, so that the rotation of the first speed regulating wheel can obtain different linear velocities and angular velocities, completing the speed adjustment. When the speed of the first power wheel is constant, the rotation speed of the speed generating wheel can be changed by rotating the first speed regulating wheel, achieving continuously variable speed change, thereby meeting the personalized adjustment requirements of pedaling force during riding. In addition, the continuously variable transmission can achieve non-friction continuous stepless speed change, with large torque transmission and high transmission efficiency; the speed can be changed in a stationary state, a rotating state, and a riding state, and the speed adjustment is convenient, light weight, and small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. 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 creative work.

[0024] FIG1 is a schematic structural diagram of a continuously variable transmission provided by an embodiment of the present invention;

[0025] FIG2 is an exploded view of a continuously variable transmission provided by an embodiment of the present invention;

[0026] 3 is a schematic diagram of the assembly between the base, the first power wheel, the first locking member and the speed generating wheel in the continuously variable transmission provided by an embodiment of the present invention;

[0027] 4 is a schematic diagram of the assembly between the base, the first power wheel, the first locking member and the first speed regulating wheel in the continuously variable transmission provided by an embodiment of the present invention;

[0028] 5 is a schematic diagram of the assembly between the first power wheel and the first locking member in the continuously variable transmission provided by an embodiment of the present invention;

[0029] 6 is a schematic diagram of the assembly between the first locking member, the first speed regulating wheel and the speed generating wheel in the continuously variable transmission provided by an embodiment of the present invention;

[0030] 7 is a schematic structural diagram of a first locking member along a first viewing direction according to an embodiment of the present invention;

[0031] 8 is a schematic structural diagram of a first locking member according to an embodiment of the present invention along a second viewing direction;

[0032] 9 is a schematic structural diagram of a first speed regulating wheel in a continuously variable transmission according to an embodiment of the present invention;

[0033] 10 is a schematic diagram of the assembly between the first speed regulating wheel, the first gear set, the second gear set and the second speed regulating wheel in the continuously variable transmission provided in an embodiment of the present invention;

[0034] FIG11 is a schematic diagram of the angle change between two adjacent first locking members in the continuously variable transmission provided by an embodiment of the present invention.

[0035] In the accompanying drawings, the various reference numerals represent: 1. base; 2. first power wheel; 21. annular mounting groove; 3. speed-changing generating wheel; 31. first slide groove; 32. second slide groove; 4. first locking member; 41. first sliding portion; 42. interference portion; 43. locking portion; 5. first speed regulating wheel; 51. first sleeve portion; 52. first supporting portion; 521. raised area; 522. recessed area; 6. first connecting ring; 7. second power wheel; 8. second locking member; 9. second speed regulating wheel; 10. first gear set; 20. second gear set; 30. upper shell; 40. lower shell; 50. second connecting ring; 60. first decorative plate; 70. second decorative plate. Modes for Carrying Out the Invention

[0036] The following describes in detail embodiments of the present invention, examples of which 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, and are not to be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] 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", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0039] Example:

[0040] An embodiment of the present invention provides a bicycle, comprising a bicycle body and a continuously variable transmission. The continuously variable transmission is arranged on the bicycle body. By adjusting the continuously variable transmission, the speed ratio required within the speed range can be quickly adjusted when the bicycle is in a stopped state, a riding state, and a coasting state.

[0041] Please refer to Figures 1 to 11. The continuously variable transmission includes a base 1, a first power wheel 2, a speed generating wheel 3, a first locking member 4, and a first speed regulating wheel 5. The first power wheel 2 is rotatably mounted on the outside of the base 1; the speed generating wheel 3 is rotatably mounted on the outside of the base 1, and the axis of the speed generating wheel 3 is eccentrically arranged relative to the axis of the first power wheel 2. One side of the speed generating wheel 3 is provided with a plurality of first limiting structures equidistantly spaced along its circumference; the first locking member 4 is slidably mounted on one side of the speed generating wheel 3 and has a locked state fixed to the first power wheel 2 and an unlocked state capable of sliding along the circumference of the first power wheel 2. A plurality of first locking members 4 are spaced apart, and the plurality of first locking members 4 are spaced apart from the plurality of first limiting structures. The structures correspond one-to-one so that the first locking member 4 slides radially along the speed generating wheel 3 and rotates circumferentially following the speed generating wheel 3; multiple first locking members 4 are enclosed to form a concentric circle coaxially arranged with the first power wheel 2, and at least one of the multiple first locking members 4 is in a locked state, and at least one is in an unlocked state; the first speed regulating wheel 5 is rotatably assembled on the outside of the base 1, and the first speed regulating wheel 5 is coaxially arranged with the first power wheel 2. The first speed regulating wheel 5 is provided with a first trigger structure for switching the first locking member 4 between a locked state and an unlocked state.

[0042] The first power wheel 2 and the speed generating wheel 3 are connected by a first locking member 4, so that when the first power wheel 2 rotates, the speed generating wheel 3 can be driven to rotate, and the first locking member 4 can slide along the radial direction of the speed generating wheel 3 and rotate circumferentially with the speed generating wheel 3. Multiple first locking members 4 enclose a concentric circle coaxially arranged with the first power wheel 2, so that the speed corresponding to the position of each first locking member 4 is different; when the first speed regulating wheel 5 rotates, the first trigger structure can switch the first locking member 4 between a locked state and an unlocked state, so that the rotation of the first speed regulating wheel 5 can obtain different linear velocities and angular velocities, completing the speed adjustment. When the speed of the first power wheel 2 is constant, the rotation speed of the speed generating wheel 3 can be changed by rotating the first speed regulating wheel 5, achieving stepless speed change, thereby meeting the personalized adjustment requirements of the pedaling force during riding. In addition, the continuously variable transmission can achieve non-friction continuous stepless speed change, with large torque transmission and high transmission efficiency; the speed can be changed in a stationary state, a rotating state, and a riding state, and the speed adjustment is convenient, light weight, and small size.

[0043] It should be noted that 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 the speed input wheel, and the speed change generating wheel 3 is the speed output wheel. When the speed of the first power wheel 2 is constant, the first speed regulating wheel 5 is rotated to change the rotation speed of the speed change generating wheel 3, thereby completing stepless speed change.

[0044] Referring to Figures 3, 5, and 6, the first limiting structure includes a first slot 31 provided on the speed-changing wheel 3. The length of the first slot 31 extends radially along the speed-changing wheel 3. The first locking member 4 is provided with a first sliding portion 41. The first sliding portion 41 is slidably assembled in the first slot 31 so that the first locking member 4 can slide radially along the speed-changing wheel 3. The two sides of the first sliding portion 41 respectively abut against the opposite side walls of the first slot 31 so that the first locking member 4 can rotate circumferentially with the speed-changing wheel 3. The first slot 31 can be a rectangular slot, which is provided on the side of the speed-changing wheel 3 close to the first power wheel 2. The first sliding portion 41 can be a column, whose peripheral walls abut against the opposite side walls of the first slot 31. The column and the rectangular slot cooperate with each other to reduce the friction between the first sliding portion 41 and the first slot 31, thereby making the first sliding portion 41 slide more smoothly on the first slot 31.

[0045] Preferably, a protective cover is fixedly mounted on the peripheral wall of the first sliding portion 41 , and the protective cover can be made of a material with higher hardness, that is, the protective cover has better wear resistance than the first sliding portion 41 , thereby avoiding wear of the first sliding portion 41 and improving the service life of the first locking member 4 .

[0046] Please refer to Figures 4, 6 and 11. Both ends of each first slide groove 31 are enclosed to form a concentric circle coaxially arranged with the speed generating wheel 3, wherein one end of the first slide groove 31 extends outward to the edge of the speed generating wheel 3, and the other end extends inward for a certain distance. The position of each first locking member 4 in the corresponding first slide groove 31 is different when it is in a locked state or an unlocked state, so that each first locking member 4 is enclosed to form an eccentric circle eccentrically arranged with the speed generating wheel 3, and the first power wheel 2 is eccentrically arranged with the speed generating wheel 3, thereby ensuring that multiple first locking members 4 are enclosed to form a concentric circle coaxially arranged with the first power wheel 2.

[0047] It should be noted that the angles between any two adjacent first locking members 4 are different, and there are countless angles between any two adjacent first locking members 4. When the speed generating wheel 3 rotates, the speed generating wheel 3 drives the first locking member 4 to rotate with it through the first slide groove 31, and the first locking member 4 undergoes continuous linear velocity changes and angular velocity changes relative to the first power wheel 2; wherein, the speed generating wheel 3 rotates one circle at a uniform speed, and the first locking member 4 slides circumferentially on the first power wheel 2 and rotates one circle but not at a uniform speed. The movement speed of the first locking member 4 is first continuously accelerated by a certain angle and then continuously decelerated, or first continuously decelerated by a certain angle and then continuously accelerated. The average speed of the speed generating wheel 3 rotating one circle and the average speed of the first locking member 4 rotating one circle are consistent. The principle of stepless speed change is explained below:

[0048] As shown in Figure 11, the minimum angle between two adjacent first locking members 4 is N, and the maximum angle is M (M is greater than N). The value of M divided by N is the maximum speed range. The eccentric distance between the speed-changing wheel 3 and the first power wheel 2 determines the maximum speed ratio. As the first locking members 4 and the first locking members 4 slide along the circumference of the first power wheel 2 from the minimum angle N to the maximum angle M, the angle between the first locking members 4 and the first locking members 4 will continuously increase from N to M, forming countless angles, thereby achieving stepless speed change.

[0049] Please refer to Figures 3, 4 and 5. The first power wheel 2 is provided with an annular mounting groove 21 coaxially arranged with the first power wheel 2 on the side close to the speed generating wheel 3, and each first locking member 4 is accommodated in the annular mounting groove 21; the first locking member 4 is also provided with a first locking structure, and the first locking structure cooperates with the first trigger structure to fix the first locking member 4 in the annular mounting groove 21 and is in a locked state. At this time, the first power wheel 2 drives the speed generating wheel 3 to rotate through the first locking member 4; or, the first locking structure cooperates with the first trigger structure to make the first locking member 4 slide and be assembled in the annular mounting groove 21 and be in an unlocked state. At this time, the first locking member 4 slides in the annular mounting groove 21, which can change the speed ratio between the first power wheel 2 and the speed generating wheel 3. Specifically, when the first speed regulating wheel 5 is rotated, the first trigger structure changes position as the first speed regulating wheel 5 rotates, which can change the position of the first locking member 4 in the annular mounting groove 21 when the first trigger structure triggers the first locking structure. Multiple first locking members 4 are distributed in the annular mounting groove 21, and the speed corresponding to each position of the first locking member 4 is different, so that different linear speeds and angular speeds can be obtained by rotating the first speed regulating wheel 5, thereby completing speed adjustment.

[0050] Please refer to Figures 5 to 8. The first locking structure includes a resistance portion 42 that contacts the inner wall of the annular mounting groove 21, and a locking portion 43 that cooperates with the resistance portion 42 and is arranged opposite to the outer wall of the annular mounting groove 21. The resistance portion 42 is used to drive the locking portion 43 to move to abut against the outer wall of the annular mounting groove 21 or separate from the outer wall of the annular mounting groove 21 when triggered by the first trigger structure. Specifically, when the first trigger structure triggers the interference portion 42, the locking portion 43 is driven by the interference portion 42 to press against the outer wall of the annular mounting groove 21. At this time, the interference portion 42 and the locking portion 43 press against the inner wall and outer wall of the annular mounting groove 21 respectively, so that the first locking member 4 is fixed on the annular mounting groove 21, and the first locking member 4 is in a locked state; when the first trigger structure does not trigger the interference portion 42, the locking portion 43 is not pushed and driven by the interference portion 42, and the locking portion 43 resets and moves to separate from the outer wall of the annular mounting groove 21, so that the first locking member 4 can slide in the annular mounting groove 21, and the first locking member 4 is in an unlocked state.

[0051] It should be noted that the interference portion 42 is movably assembled on the first locking member 4, and the locking portion 43 is elastically assembled on the first locking member 4. The interference portion 42 and the locking portion 43 are angularly slidably matched. For example, the interference portion 42 slides in the vertical direction, and the side surfaces of the interference portion 42 and the locking portion 43 that are relatively arranged are both inclined surfaces. When the interference portion 42 is triggered to slide upward, the interference portion 42 will push the locking portion 43 toward the outer wall of the annular mounting groove 21 until the locking portion 43 pushes against the inner wall of the annular mounting groove 21. At this time, the locking portion 43 is in a compressed state; when the interference portion 42 is not triggered, the locking portion 43 moves toward the outer wall away from the annular mounting groove 21 under the action of the restoring force. At this time, the interference portion 42 slides downward.

[0052] In some embodiments, the side surface of the locking portion 43 close to the outer wall of the annular mounting groove 21 is an arc surface, and the arc surface is adapted to the wall surface of the outer wall of the annular mounting groove 21. When the interference portion 42 pushes against and drives the locking portion 43 toward the direction close to the outer wall of the annular mounting groove 21 until it contacts the wall surface of the outer wall of the annular mounting groove 21, the first locking member 4 and the first power wheel 2 form an overrunning clutch, thereby achieving the locking of the first locking member 4.

[0053] Referring to Figures 9 and 10 , the first trigger structure comprises a raised area 521 and a recessed area 522 provided on one side surface of the first flywheel 5. The raised area 521 and the recessed area 522 enclose a concentric circle coaxial with the annular mounting groove 21. When the interference portion 42 contacts the recessed area 522, the interference portion 42 drives the locking portion 43 toward the outer wall away from the annular mounting groove 21. When the interference portion 42 contacts the raised area 521, the interference portion 42 drives the locking portion 43 toward the outer wall closer to the annular mounting groove 21. The first trigger structure triggers the interference portion 42 by providing the raised area 521 on one side surface of the first flywheel 5 to abut against the interference portion 42, causing it to slide upward, or by providing the recessed area 522 on one side surface of the first flywheel 5 to provide space for the interference portion 42 to slide downward.

[0054] It should be understood that when the first speed regulating wheel 5 rotates, the intersection of the raised area 521 and the recessed area 522 on the first speed regulating wheel 5 rotates with the first speed regulating wheel 5, thereby changing the position at which the first triggering structure triggers the first locking member 4. The first speed regulating wheel 5 always maintains the triggering of at least two adjacent first locking members 4 between the minimum and maximum angle positions. The movement of the first locking members 4 from the minimum angle position to the maximum angle position is continuous acceleration.

[0055] The following describes the speed input and speed output principles of the first power wheel 2 or the speed-changing generating wheel 3, taking the first power wheel 2 as the input wheel and the speed-changing generating wheel 3 as the output wheel as an example:

[0056] For the input wheel, of the two activated first locking members 4, only the one with the faster angular velocity is locked with the first power wheel 2, while the slower one is unlocked and shifts to overtaking and following. When the faster first locking member 4 is triggered to unlock, the slower one is also triggered to lock, transitioning from overtaking and following to driving. Rotating the first power wheel 2 drives the locked first locking member 4, which in turn rotates the speed-changing generating wheel 3, completing the speed input.

[0057] Of the two operating first locking members 4, only the one with the faster angular velocity is locked with the speed-changing wheel 3, while the one with the slower angular velocity is unlocked and shifts to overtaking and following. When the first locking member 4 with the faster angular velocity is triggered and shifts to unlocked, the slower one is also triggered and locked, transitioning from overtaking and following to active. The first locking member 4 drives the speed-changing wheel 3 to rotate, thereby completing the speed input.

[0058] Please refer to Figures 6, 9 and 10. The first speed regulating wheel 5 includes a first sleeve portion 51 and a first support portion 52 extending outward from the circumference of one end of the first sleeve portion 51. The first trigger structure is provided on the first support portion 52. The continuously variable transmission also includes a first connecting ring 6 sleeved and fixed on the outside of the first sleeve portion 51. The first power wheel 2 is rotatably assembled on the outside of the first connecting ring 6, and at least a portion of the first power wheel 2 is provided between the first connecting ring 6 and the first support portion 52. Specifically, the first sleeve portion 51 is sleeved on the outside of the base 1 and rotatably assembled with the base 1. The first support portion 52 is located at one end of the first sleeve portion 51 close to the speed generating wheel 3. The first trigger structure is provided on the surface of the first support portion 52 close to the first power wheel 2, that is, the surface of the first support portion 52 close to the first power wheel 2 is provided with a raised area 521 and a recessed area 522. An annular flange is provided at one end of the first power wheel 2 close to the speed generating wheel 3, and the annular flange is provided between the first connecting ring 6 and the first support portion 52, so as to realize the assembly of the first speed regulating wheel 5, the speed generating wheel 3 and the first power wheel 2 on the base 1. The structure is simple and the space occupied is small, which is conducive to the miniaturization of the continuously variable transmission.

[0059] Please refer to FIG. 1 and FIG. 2 . In some embodiments, the continuously variable transmission further includes a second power wheel 7 , a second locking member 8 and a second speed regulating wheel 9 . The second power wheel 7 is rotatably assembled on the outside of the base 1, the speed generating wheel 3 is arranged between the first power wheel 2 and the second power wheel 7, and the other side of the speed generating wheel 3 is provided with multiple second limiting structures equidistantly spaced along its circumference; the second locking member 8 is slidably assembled on one side of the speed generating wheel 3 and has a locked state fixed with the second power wheel 7 and an unlocked state that can slide along the circumference of the second power wheel 7. There are multiple second locking members 8 at intervals, and the multiple second locking members 8 correspond one-to-one with the multiple second limiting structures to enable the second locking member 8 to slide radially along the speed generating wheel 3 and rotate circumferentially with the speed generating wheel 3; the multiple second locking members 8 enclose a concentric circle coaxially arranged with the second power wheel 7, and at least one of the multiple second locking members 8 is in a locked state and at least one is in an unlocked state; the second speed regulating wheel 9 is rotatably assembled on the outside of the base 1, the second speed regulating wheel 9 is coaxially arranged with the second power wheel 7, and the second speed regulating wheel 9 is provided with a second trigger structure for switching the second locking member 8 between a locked state and an unlocked state.

[0060] Specifically, one of the first power wheel 2 and the second power wheel 7 is an input wheel, and the other is an output wheel; a first locking member 4 is provided between the first power wheel 2 and the speed generating wheel 3, and a second locking member 8 is provided between the second power wheel 7 and the speed generating wheel 3 to realize the two-stage speed change of the continuously variable transmission. The second limiting structure includes a second slide groove 32 provided on the speed generating wheel 3, the length of the second slide groove 32 extends along the radial direction of the speed generating wheel 3, and the second locking member 8 is provided with a second sliding portion, which is slidably assembled in the second slide groove 32 so that the second locking member 8 can slide along the radial direction of the speed generating wheel 3; and the two sides of the second sliding portion are respectively in contact with the opposite side walls of the second slide groove 32 so that the second locking member 8 can rotate circumferentially with the speed generating wheel 3. Among them, the first slide groove 31 and the second slide groove 32 are respectively provided on the opposite sides of the speed generating wheel 3, and the setting method of the second slide groove 32 is the same as the setting method of the first slide groove 31.

[0061] It should be noted that the setting method of the second locking member 8 between the second power wheel 7 and the speed generating wheel 3 is the same as the setting method of the first locking member 4 between the first power wheel 2 and the speed generating wheel 3, the setting method of the second speed wheel and the first speed wheel is the same, and the continuously variable transmission also includes a second connecting ring 50 that is mounted and fixed on the outside of the second speed regulating ring. The setting method of the second connecting ring 50 is the same as the setting method of the first connecting ring 6, and will not be repeated here.

[0062] Referring to Figures 2 and 10 , the continuously variable transmission also includes a first gear set 10 meshing with the first speed regulating wheel 5, and a second gear set 20 meshing with the first gear set 10 and the second speed regulating wheel 9, respectively. Both the first gear set 10 and the second gear set 20 are mounted on the base 1. Specifically, the inner rings of the first and second speed regulating wheels 5, 9 are each provided with a rack. The first gear set 10 meshes with the first speed regulating wheel 5 via the rack on the first speed regulating wheel 5, and the second gear set 20 meshes with the second speed regulating wheel 9 via the rack on the second speed regulating wheel 9. The first gear set 10 includes a first connecting shaft and two gears disposed at either end of the first connecting shaft. One of the two gears meshes with the second gear set 20, and the other meshes with the rack on the first speed regulating wheel 5. The second gear set 20 includes a second connecting shaft and two gears disposed at either end of the second connecting shaft. One of the two gears meshes with the first gear set 10, and the other meshes with the rack on the second speed regulating wheel 9. The second speed regulating wheel 9 may be provided with a toggle hole, and the second speed regulating wheel 9 may be rotated through the toggle hole using an instrument, and the first speed regulating wheel 5 may be driven to rotate through the second gear set 20 and the first gear set 10, thereby achieving speed adjustment by rotating the first speed regulating wheel 5 and the second speed regulating wheel 9.

[0063] Please refer to Figures 1 and 2. The continuously variable transmission also includes an upper shell 30 and a lower shell 40. The upper shell 30 and the lower shell 40 enclose a receiving space. The base 1 is fixed in the receiving space. The first power wheel 2, the first speed regulating wheel 5, the speed generating wheel 3, the second power wheel 7, and the second speed regulating wheel 9 are all received in the receiving space. The upper shell 30 and the lower shell 40 are sealed to prevent impurities from entering the receiving space.

[0064] Please refer to Figures 1 and 2. The continuously variable transmission also includes a first decorative plate 60 and a second decorative plate 70. The first decorative plate 60 and the second decorative plate 70 are respectively fixed on the first speed regulating wheel 5 and the second speed regulating wheel 9. The first decorative plate 60 and the first decorative plate 60 are used to cover the first gear set 10 and the second gear set 20 to prevent the first gear set 10 and the second gear set 20 from being exposed to the outside world.

[0065] 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 scope of protection of the present invention.

Claims

1. A continuously variable transmission, characterized in that: include: Pedestal; A first power wheel, rotatably mounted on the outer side of the base; A speed-changing generating wheel is rotatably mounted on the outer side of the base, the axis of the speed-changing generating wheel is eccentrically arranged relative to the axis of the first power wheel, and one side of the speed-changing generating wheel is provided with a plurality of first limiting structures which are equidistantly distributed along the circumference thereof; A first locking member is slidably assembled on one side of the speed-changing generating wheel and has a locking state fixed with the first power wheel and an unlocking state capable of sliding along the circumference of the first power wheel. A plurality of the first locking members are arranged at intervals, and a plurality of the first locking members are matched with a plurality of the first limiting structures in a one-to-one correspondence, so that the first locking member slides along the radial direction of the speed-changing generating wheel and rotates along the circumference of the speed-changing generating wheel. The plurality of the first locking members enclose a concentric circle coaxially arranged with the first power wheel, and at least one of the plurality of the first locking members is in a locking state, and at least one is in an unlocking state; as well as, The first speed regulating wheel is rotatably mounted on the outer side of the base, the first speed regulating wheel is coaxially arranged with the first power wheel, and the first speed regulating wheel is provided with a first trigger structure for switching the first locking member between the locked state and the unlocked state.

2. The continuously variable transmission according to claim 1, characterized in that: The first limiting structure includes a first slide groove arranged on the speed change generating wheel, and the length of the first slide groove extends along the radial direction of the speed change generating wheel; the first locking member is provided with a first sliding portion, and the first sliding portion is slidably assembled in the first slide groove, and the two sides of the first sliding portion are respectively abutted against the opposite side walls of the first slide groove.

3. The continuously variable transmission according to claim 2, characterized in that: Both ends of each of the first sliding grooves are enclosed to form a concentric circle coaxially arranged with the speed change generating wheel.

4. The continuously variable transmission according to claim 1, characterized in that: An annular mounting groove coaxially arranged with the first power wheel is provided on one side of the first power wheel close to the speed change generating wheel, and each of the first locking members is accommodated in the annular mounting groove; the first locking member is also provided with a first locking structure, and the first locking structure cooperates with the first trigger structure to fix the first locking member in the annular mounting groove in the locked state, or to slide the first locking member in the annular mounting groove in the unlocked state.

5. The continuously variable transmission according to claim 4, characterized in that: The first locking structure includes a resistance portion that contacts the inner wall of the annular mounting groove, and a locking portion that cooperates with the resistance portion and is arranged opposite to the outer wall of the annular mounting groove. The resistance portion is used to drive the locking portion to move to abut against the outer wall of the annular mounting groove or separate from the outer wall of the annular mounting groove under the triggering of the first trigger structure.

6. The continuously variable transmission according to claim 5, characterized in that: The first trigger structure is a raised area and a recessed area arranged on one side surface of the first speed regulating wheel, and the raised area and the recessed area enclose a concentric circle coaxially arranged with the annular mounting groove; wherein, when the interference portion contacts the recessed area, the interference portion drives the locking portion to move toward the outer side wall away from the annular mounting groove; when the interference portion contacts the raised area, the interference portion drives the locking portion to move toward the outer side wall close to the annular mounting groove.

7. The continuously variable transmission according to claim 1, characterized in that: The first speed regulating wheel includes a first sleeve portion and a first support portion extending outward from the circumferential side of one end of the first sleeve portion, the first trigger structure is arranged on the first support portion, and the continuously variable transmission also includes a first connecting ring sleeved and fixed on the outer side of the first sleeve portion, the first power wheel is rotatably assembled on the outer side of the first connecting ring, and at least a portion of the first power wheel is arranged between the first connecting ring and the first support portion.

8. The continuously variable transmission according to claim 1, characterized in that: The continuously variable transmission further comprises: A second power wheel is rotatably mounted on the outer side of the base, the speed change generating wheel is arranged between the first power wheel and the second power wheel, and the other side of the speed change generating wheel is provided with a plurality of second limiting structures which are equally spaced along the circumference thereof; A second locking member is slidably assembled on the other side of the speed-changing generating wheel and has a locking state connected to the second power wheel and an unlocking state capable of sliding circumferentially along the second power wheel. A plurality of second locking members are arranged at intervals, and a plurality of second locking members are matched with a plurality of second limiting structures in a one-to-one correspondence, so that the second locking member slides radially along the speed-changing generating wheel and rotates circumferentially with the speed-changing generating wheel; a plurality of second locking members enclose a concentric circle coaxially arranged with the second power wheel, and at least one of the plurality of second locking members is in a locking state, and at least one is in an unlocking state; and, The second speed regulating wheel is rotatably mounted on the outer side of the base, the second speed regulating wheel is coaxially arranged with the second power wheel, and the second speed regulating wheel is provided with a second trigger structure for switching the second locking member between the locked state and the unlocked state.

9. The continuously variable transmission according to claim 8, characterized in that: The continuously variable transmission also includes a first gear set meshing with the first speed regulating wheel, and a second gear set meshing with the first gear set and the second speed regulating wheel respectively. The first gear set and the second gear set are both mounted on the base.

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

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