A continuously variable transmission and a bicycle

Abstract

The present invention provides a continuously variable transmission and a bicycle, wherein the continuously variable transmission comprises: a base; a first power wheel; a speed-changing generating wheel, one side of which is provided with a plurality of first limiting structures equidistantly distributed along its circumference; a first locking member, which is slidably mounted on one side of the speed-changing generating wheel and has a locked state fixed to the first power wheel and an unlocked state capable of sliding along the circumference of the first power wheel; and a first speed regulating wheel, which 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 a locked state and an unlocked state. When the speed of the first power wheel is constant, the rotation speed of the speed-changing generating wheel can be changed by rotating the first speed regulating wheel, thereby realizing continuously variable speed change, thereby being able to meet the personalized adjustment requirements for the pedaling force during riding.

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, while the pedaling force is too small when shifting down a gear. This cannot meet people's personalized adjustment needs for the pedaling force when riding, and the internal gear shifting is heavy, while the chain is easily dropped when shifting the external gear shifting, resulting in certain defects in the transmissions on bicycles or power-assisted bicycles. 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 in the related art that the stepless transmission used in the bicycle cannot meet the demand for personalized adjustment of the pedaling force.

[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 mounted on the outer side of the base;

[0007] 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;

[0008] 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 circumferentially along 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 radially along the speed-changing generating wheel and rotates circumferentially with the speed-changing generating wheel; a plurality of first locking members enclose a concentric circle coaxially arranged with the first power wheel, and at least one of the plurality of first locking members is in a locking state, and at least one is in an unlocking state; and,

[0009] 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.

[0010] Optionally, 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 radially along 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.

[0011] Optionally, both ends of each of the first sliding grooves 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 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.

[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, and 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.

[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 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.

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

[0017] 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;

[0018] 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,

[0019] 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.

[0020] Optionally, the continuously variable transmission further comprises 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.

[0022] Compared with the related art, the continuously variable transmission and bicycle of the present invention have the following beneficial effects: the first power wheel and the speed generating wheel are connected through the 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, and a plurality of first locking members are enclosed to form 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 the locked state and the unlocked state, so that the rotation of the first speed regulating wheel can obtain different linear velocities and angular velocities, and the speed regulation is completed, so that the rotation speed of the speed generating wheel can be changed by rotating the first speed regulating wheel when the speed of the first power wheel is constant, and the continuously variable speed can be realized, so that the personalized adjustment requirements for the pedaling force during riding can be met. In addition, the continuously variable transmission can realize non-friction continuous continuously variable speed change, with large transmission torque and high transmission efficiency; the speed can be changed in the static state, the rotating state and the riding state, and the speed regulation 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 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.

[0024] Figure 1 is a schematic structural diagram of a continuously variable transmission provided by an embodiment of the present invention;

[0025] Figure 2 is an exploded view of a continuously variable transmission provided by an embodiment of the present invention;

[0026] Figure 3 It 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] Figure 4 It 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] Figure 5 is a schematic diagram of assembly between a first power wheel and a first locking member in a continuously variable transmission provided by an embodiment of the present invention;

[0029] Figure 6 It 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] Figure 7 is a schematic structural diagram of a first locking member along a first viewing direction of an embodiment of the present invention;

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

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

[0033] Fig.10 It 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 by an embodiment of the present invention;

[0034] Fig.11 It 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, each figure mark represents: 1, base; 2, first power wheel; 21, annular mounting groove; 3, speed change 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. DETAILED DESCRIPTION

[0036] 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.

[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" 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.

[0038] 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.

[0039] Example:

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

[0041] See also Figures 1 to 11 The continuously variable transmission includes a base 1, a first power wheel 2, a speed-changing wheel 3, a first locking member 4 and a first speed-regulating wheel 5. The first power wheel 2 is rotatably mounted on the outer side of the base 1; the speed-changing wheel 3 is rotatably mounted on the outer side of the base 1, the axis of the speed-changing wheel 3 is eccentrically arranged relative to the axis of the first power wheel 2, and one side of the speed-changing wheel 3 is provided with a plurality of first limiting structures equidistantly distributed along its circumference; the first locking member 4 is slidably mounted on one side of the speed-changing 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, and a plurality of first locking members 4 are arranged at intervals, and the plurality of first locking members 4 and the plurality of first limiting structures are arranged. The structures correspond one-to-one so that the first locking member 4 slides radially along the speed change generating wheel 3 and rotates circumferentially following the speed change 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 outer side of the base 1, the first speed regulating wheel 5 is coaxially arranged with the first power wheel 2, and 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 through the 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. A plurality of first locking members 4 enclose and form 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 the locked state and the unlocked state, so that the rotation of the first speed regulating wheel 5 can obtain different linear velocities and angular velocities, and the speed adjustment is completed, so that the rotation speed of the speed generating wheel 3 can be changed by rotating the first speed regulating wheel 5 when the speed of the first power wheel 2 is constant, and stepless speed change is realized, so as to meet the personalized adjustment requirements of the pedaling force during riding. In addition, the continuously variable transmission can realize non-friction continuous stepless speed change, with large transmission torque and high transmission efficiency; the speed can be changed in the static state, the rotating state and the 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] See also Figure 3 , Figure 5and Figure 6 The first limiting structure includes a first slide groove 31 provided on the speed-changing wheel 3, the length of the first slide groove 31 extends along the radial direction of the speed-changing wheel 3, and the first locking member 4 is provided with a first sliding portion 41, which is slidably assembled in the first slide groove 31, so that the first locking member 4 can slide along the radial direction of the speed-changing wheel 3; and the two sides of the first sliding portion 41 are respectively abutted against the opposite two side walls of the first slide groove 31, so that the first locking member 4 can rotate circumferentially with the speed-changing wheel 3. Among them, the first slide groove 31 can be a rectangular groove, and the first slide groove 31 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, and the peripheral wall of the first sliding portion 41 is respectively abutted against the opposite two side walls of the first slide groove 31; the column and the rectangular groove cooperate with each other to reduce the friction between the first sliding portion 41 and the first slide groove 31, so that the first sliding portion 41 can slide on the first slide groove 31 more smoothly.

[0045] Preferably, a protective cover is fixedly mounted on the peripheral wall of the first sliding part 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 part 41 , thereby avoiding wear of the first sliding part 41 and improving the service life of the first locking member 4 .

[0046] See also Figure 4 , Figure 6 and Fig.11 Both ends of each first slide groove 31 are enclosed to form a concentric circle coaxially arranged with the speed change generating wheel 3, wherein one end of the first slide groove 31 extends outward to the edge of the speed change generating wheel 3, and the other end extends inward for a certain distance. When each first locking member 4 is in a locked state or an unlocked state, the position of each first locking member 4 in the corresponding first slide groove 31 is different, so that each first locking member 4 is enclosed to form an eccentric circle eccentrically arranged with the speed change generating wheel 3, and the first power wheel 2 is eccentrically arranged with the speed change 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 change generating wheel 3 rotates, the speed change 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 change 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 one rotation of the speed change generating wheel 3 and one rotation of the first locking member 4 are consistent. The principle of stepless speed change is explained below:

[0048] like Fig.11 As shown, the minimum angle between two adjacent first locking members 4 is N, and the maximum angle is M (M is greater than N). The numerical result 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 the first locking member 4 and the first locking member 4 sliding from the minimum angle N along the circumference of the first power wheel 2 to the maximum angle M, the angle between the first locking member 4 and the first locking member 4 will continuously increase from N to M, thereby forming countless angles, thereby forming a stepless speed change.

[0049] See also Figure 3 , Figure 4 and Figure 5 A side of the first power wheel 2 close to the speed generating wheel 3 is provided with an annular mounting groove 21 coaxially arranged with the first power wheel 2, 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 is 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. Therefore, different linear speeds and angular speeds can be obtained by rotating the first speed regulating wheel 5, thereby completing speed adjustment.

[0050] See also Figures 5 to 8The 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 under the triggering of 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 respectively press against the inner wall and outer wall of the annular mounting groove 21, 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 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 and move 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, and the locking portion 43 is in a compressed state at this time; when the interference portion 42 is not triggered, the locking portion 43 moves in the direction away from the outer wall of the annular mounting groove 21 under the action of the restoring force, and the interference portion 42 slides downward at this time.

[0052] In some embodiments, a 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 resistance portion 42 pushes against and drives the locking portion 43 to move 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] See also Fig. 9 and Fig.10The first trigger structure is a raised area 521 and a recessed area 522 arranged on one side surface of the first speed regulating wheel 5, and the raised area 521 and the recessed area 522 enclose a concentric circle arranged coaxially with the annular mounting groove 21; wherein, when the abutting portion 42 contacts the recessed area 522, the abutting portion 42 drives the locking portion 43 to move toward the outer side wall away from the annular mounting groove 21; when the abutting portion 42 contacts the raised area 521, the locking portion 43 drives to move toward the outer side wall close to the annular mounting groove 21. By providing a raised area 521 on one side surface of the first speed regulating wheel 5 to abut against the abutting portion 42 to make it slide upward, or by providing a recessed area 522 on one side surface of the first speed regulating wheel 5 to provide a space for the abutting portion 42 to slide downward, the first trigger structure triggers the abutting portion 42.

[0054] It should be understood that when the first speed regulating wheel 5 is rotated, the junction of the raised area 521 and the recessed area 522 on the first speed regulating wheel 5 will rotate along with the first speed regulating wheel 5, thereby changing the position where the first trigger structure triggers the first locking member 4. The first speed regulating wheel 5 always keeps at least two adjacent first locking members 4 triggered between the minimum angle position and the maximum angle position, and the movement of the first locking member 4 from the minimum angle position to the maximum angle position is continuous acceleration.

[0055] The speed input and speed output principle of the first power wheel 2 or the speed change generating wheel 3 is described below, taking the first power wheel 2 as the input wheel and the speed change generating wheel 3 as the output wheel as an example:

[0056] For the input wheel, of the two working first locking members 4, only the one with a faster angular velocity is in a locked state with the first power wheel 2, and the slower one is in an unlocked state with the first power wheel 2 and changes to overtaking and following; when the first locking member 4 with a faster angular velocity is triggered to change to an unlocked state, the slower one is triggered to be in a locked state and changes from overtaking and following to active. The first power wheel 2 is rotated to drive the first locking member 4 in a locked state to rotate, and the first locking member 4 drives the speed generating wheel 3 to rotate, thereby completing the speed input.

[0057] For the output wheel, of the two first locking members 4 that have been working, only the one with a faster angular velocity is in a locked state with the speed generating wheel 3, and the slower one is in an unlocked state with the speed generating wheel 3 and changes to overtaking and following; when the first locking member 4 with a faster angular velocity is triggered to change to an unlocked state, the slower one is triggered to be in a locked state and changes from overtaking and following to active. The first locking member 4 drives the speed generating wheel 3 to rotate, thereby completing the speed input.

[0058] See also Figure 6 , Fig. 9 and Fig.10The 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 arranged on the first support portion 52, and the continuously variable transmission also includes a first connecting ring 6 sleeved and fixed on the outer side of the first sleeve portion 51, the first power wheel 2 is rotatably assembled on the outer side of the first connecting ring 6, and at least part of the first power wheel 2 is arranged between the first connecting ring 6 and the first support portion 52. Specifically, the first sleeve portion 51 is sleeved on the outer side 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, and the first trigger structure is arranged 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 occupies a small space, which is conducive to the miniaturization of the continuously variable transmission.

[0059] See also Figure 1 and Figure 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 outer side of the base 1, the speed change generating wheel 3 is arranged between the first power wheel 2 and the second power wheel 7, and the other side of the speed change generating wheel 3 is provided with a plurality of second limiting structures equidistantly distributed along its circumference; the second locking member 8 is slidably assembled on one side of the speed change generating wheel 3 and has a locked state fixed with the second power wheel 7 and an unlocked state capable of sliding along the circumference of the second power wheel 7, and a plurality of second locking members 8 are arranged at intervals, and the plurality of second locking members 8 are matched with the plurality of second limiting structures in a one-to-one correspondence, so that the second locking member 8 slides radially along the speed change generating wheel 3 and rotates circumferentially following the speed change generating wheel 3; the plurality of second locking members 8 enclose and form a concentric circle coaxially arranged with the second power wheel 7, and at least one of the plurality of 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 outer side 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 arranged between the first power wheel 2 and the speed generating wheel 3, and a second locking member 8 is arranged 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 arranged 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 part, and the second sliding part 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 part are respectively abutted against 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 arranged 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 second speed wheel and the first speed wheel are set in the same way, and the continuously variable transmission also includes a second connecting ring 50 mounted and fixed on the outer side 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] See also Figure 2 and Fig.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, and the first gear set 10 and the second gear set 20 are both mounted on the base 1. Specifically, the inner rings of the first speed regulating wheel 5 and the second speed regulating wheel 9 are both provided with racks, and the first gear set 10 is meshing with the first speed regulating wheel 5 through the rack on the first speed regulating wheel 5, and the second gear set 20 is meshing with the second speed regulating wheel 9 through the rack on the second speed regulating wheel 9. The first gear set 10 includes a first connecting shaft and two gears respectively arranged at both ends of the first connecting shaft, one of the two gears meshing with the second gear set 20, and the other meshing with the rack on the first speed regulating wheel 5; the second gear set 20 includes a second connecting shaft and two gears respectively arranged at both ends of the second connecting shaft, one of the two gears meshing with the first gear set 10, and the other meshing 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] See also Figure 1 and Figure 2 The continuously variable transmission also includes an upper shell 30 and a lower shell 40, which 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 and connected to prevent impurities from entering the receiving space.

[0064] See also Figure 1 and Figure 2 The continuously variable transmission also includes a first decorative plate 60 and a second decorative plate 70, which are respectively fixed on the first speed regulating wheel 5 and the second speed regulating wheel 9, and 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.

[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 protection scope 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 in contact with 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 when triggered by the first trigger structure; or, the resistance portion is used to reset and move to separate from the outer wall of the annular mounting groove when not triggered by 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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