Speed regulating assembly, stepless speed regulating mechanism, stepless speed changer and bicycle

Abstract

The application provides a speed regulating assembly, a stepless speed regulating mechanism, a stepless speed changer and a bicycle. The speed regulating assembly comprises a track ring and at least two follow-up locking assemblies. The follow-up locking assembly comprises a sliding seat, a transmission member, a first rotating member and a first elastic member. The sliding seat is slidingly connected to the track ring and has a recessed sliding groove on one side facing the track ring. The first rotating member and the first elastic member are arranged in the part of the sliding groove outside the track ring. The follow-up locking assembly is a one-way locking structure. The follow-up locking assembly has an unlocking state capable of sliding in a first direction relative to the track ring and a locking state incapable of sliding in a second direction relative to the track ring. The second direction is opposite to the first direction. In the unlocking state, the first rotating member can rotate. In the locking state, the first rotating member cannot rotate. The connection between the track ring and the follow-up locking assembly is stable, and the locking effect of the follow-up locking assembly is good.

Description

Technical Field

[0001] This application relates to the field of bicycle technology, and more particularly to a speed control component, a continuously variable speed control mechanism, a continuously variable transmission, and a bicycle. Background Technology

[0002] In existing technology, bicycles or e-bikes mainly use stepped derailleurs, which are divided into internal and external derailleurs. Both types of derailleurs only have a limited number of fixed gears, often resulting in situations where shifting up a gear requires too much pedaling effort, or shifting down a gear requires too little pedaling effort, failing to meet the personalized pedaling effort needs of riders. In addition, internal derailleurs are heavy, and external derailleurs are prone to chain slippage during shifting, resulting in certain defects in the derailleurs of bicycles or e-bikes.

[0003] The related technology discloses a continuously variable transmission (CVT) and a bicycle. In this CVT and bicycle solution, with the speed of the first drive wheel remaining constant, the eccentricity of the gear-generating wheel relative to the first drive wheel is changed by adjusting the gear-adjusting wheel, thereby changing the rotational speed of the gear-generating wheel and achieving continuously variable transmission to meet the personalized adjustment needs of pedaling force during riding. However, the design of the first locking component and the gear-generating wheel in this solution is relatively crude, resulting in inconvenience in manufacturing and installation, and the locking effect still needs improvement.

[0004] It is important to note that the techniques described in this section are not necessarily those previously conceived or adopted. Unless otherwise specified, no technique described in this section should be assumed to be prior art simply because it is included in this section. Similarly, unless otherwise specified, the issues mentioned in this section should not be considered to be recognized in any prior art. Utility Model Content

[0005] This application provides a speed control component, a continuously variable speed control mechanism, a continuously variable transmission, and a bicycle, aiming to solve the technical problem that the design of the first locking element and the gear-generating wheel in the prior art is relatively crude.

[0006] A first aspect of this application provides a speed regulating component, the speed regulating component comprising a track ring and at least two follower locking components, the track ring comprising an outer ring wall and an inner ring wall, and the follower locking components comprising:

[0007] A sliding seat is slidably connected to the track ring. A groove is recessed on the side of the sliding seat facing the track ring. The groove extends radially in the track ring, and a portion of the groove is located outside the outer ring wall.

[0008] A transmission component, one end of which is connected to the side of the sliding seat away from the track ring, and the transmission component is opposite to the bottom of the groove;

[0009] A first rotating member is disposed within the portion of the slide groove located outside the outer annular wall; and

[0010] The first elastic element is disposed within the portion of the groove located outside the outer ring wall;

[0011] The follow-up locking assembly is a one-way locking structure. The follow-up locking assembly has an unlocked state in which it can slide relative to the track ring in a first direction, and a locked state in which it cannot slide relative to the track ring in a second direction, the second direction being opposite to the first direction. In the unlocked state, the first rotating member can rotate, and in the locked state, the first rotating member cannot rotate under the action of the outer ring wall, the sliding groove, and the first elastic member.

[0012] Optionally, a portion of the slide groove is located within the inner ring wall, and the follow-up locking assembly includes:

[0013] The second rotating member is disposed within the portion of the slide groove located within the inner annular wall; and

[0014] The second elastic element is disposed within the portion of the groove located within the inner ring wall;

[0015] In the unlocked state, the second rotating member can rotate;

[0016] In the locked state, the second rotating member cannot rotate under the action of the inner ring wall, the sliding groove and the second elastic member.

[0017] Optionally, the side of the chute facing the outer ring wall is inclined away from the outer ring wall, and the side of the chute facing the outer ring wall is a slope side. The first rotating member and the first elastic member are arranged sequentially along the second direction. The first rotating member is closer to the bottom of the slope side than the first elastic member. The first elastic member is used to apply pressure to the first rotating member so that the first rotating member can move along the slope side.

[0018] Optionally, there are multiple slide grooves, which are arranged circumferentially along the track ring. The portions of the slide grooves opposite to the track ring are interconnected, and the portions of the slide grooves located outside the outer ring wall are spaced apart and have the same shape. The number of the first rotating member and the first elastic member is equal to the number of slide grooves, and the multiple first rotating members and the multiple first elastic members are respectively disposed in the portions of the slide grooves located outside the outer ring wall.

[0019] Optionally, the first elastic element is in the shape of an arc-shaped sheet. The first elastic element includes a first sub-part and a second sub-part that are connected to each other. The free ends of the first sub-part and the second sub-part can move closer to or further away from each other. The first sub-part is slidably connected to the first rotating member on the side opposite to the second sub-part, and the second sub-part is connected to the slide groove.

[0020] Optionally, the first elastic element is U-shaped or V-shaped with a smooth corner transition.

[0021] Optionally, the connecting end of the second sub-part is raised in a direction away from the first sub-part to form a first stress portion, and the slide groove is formed with a first connecting groove corresponding to the first stress portion.

[0022] Optionally, the second elastic element is in the shape of an arcuate sheet. The second elastic element includes a third sub-part and a fourth sub-part that are connected to each other. The free ends of the third sub-part and the fourth sub-part can move closer to each other or further away from each other. The side of the third sub-part facing away from the fourth sub-part is slidably connected to the second rotating element. The fourth sub-part is connected to the slide groove.

[0023] Optionally, the second elastic element is U-shaped or V-shaped with a smooth corner transition.

[0024] Optionally, the connecting end of the fourth sub-part is raised in a direction away from the third sub-part to form a second stress portion, and the slide groove is formed with a second connecting groove corresponding to the second stress portion.

[0025] Optionally, the sliding seat extends radially in the track ring, and the follower locking assembly includes:

[0026] A first stop is connected to the sliding seat and / or the track ring. The first stop at least partially covers the slot opening of the slide groove located outside the outer ring wall. The first stop is used to prevent the first rotating member from disengaging from the slide groove.

[0027] Optionally, the follow-up locking assembly includes:

[0028] The second stop connects the sliding seat and / or the track ring. The second stop at least partially covers the slot opening of the slide groove located within the inner ring wall. The second stop is used to prevent the second rotating member from disengaging from the slide groove.

[0029] A second aspect of this application provides a continuously variable speed control mechanism, the continuously variable speed control mechanism comprising:

[0030] The rotary assembly includes a first rotary wheel and a second rotary wheel that are coaxially connected.

[0031] A drive assembly for driving the wheel assembly to reciprocate radially therein; and

[0032] The speed regulating component described in any of the above claims is provided in two. The track rings of the two speed regulating components are coaxially connected to one side of the first rotating wheel and one side of the second rotating wheel, respectively. The end of the transmission component of the two speed regulating components away from the sliding seat is oriented away from the rotating wheel assembly.

[0033] Optionally, the wheel assembly includes a first limiting member and a second limiting member, the first limiting member and the second limiting member being connected to the first wheel and the second wheel respectively, the first limiting member and the second limiting member facing the side of the sliding seat connected to the transmission member in the two speed regulating assemblies respectively, and the first limiting member and the second limiting member being used to limit the sliding seat from moving axially along the track ring.

[0034] A third aspect of this application provides a continuously variable transmission (CVT), the CVT comprising:

[0035] Speed ​​input wheel;

[0036] Speed ​​output wheel;

[0037] In any of the above-described stepless speed regulating mechanisms, the stepless speed regulating mechanism is connected between the speed input wheel and the speed output wheel. The axis of the rotating wheel assembly of the stepless speed regulating mechanism coincides with or is parallel to the axes of the speed input wheel and the speed output wheel. The end of the transmission member of one speed regulating component away from the sliding seat is slidably connected to one side of the speed input wheel, and the end of the transmission member of the other speed regulating component away from the sliding seat is slidably connected to one side of the speed output wheel. When the track ring is eccentric and rotates relative to the speed input wheel and the speed output wheel, only the follower locking component with the largest linear velocity is in the locked state and fixed to the track ring. The remaining follower locking components are in the unlocked state and slide relative to the track ring along the first direction.

[0038] Optionally, the continuously variable transmission includes:

[0039] The support assembly is a drive component that is fixedly connected to the speed input wheel, the speed output wheel, and the continuously variable speed control mechanism.

[0040] A fourth aspect of this application provides a bicycle that includes the continuously variable transmission (CVT) described above.

[0041] In the follow-up locking assembly of this application, the follow-up locking assembly adopts an external layout (assembled on the outside of the track ring), which has many advantages compared with the built-in locking mechanism in the prior art (embedded in the narrow space inside the track ring). 1. Significantly improved preparation and installation efficiency. (1) Convenient processing: The track ring does not need to be grooved, which simplifies the precision turning or casting process and reduces manufacturing costs and tolerance control difficulty. (2) High assembly fault tolerance: During installation, there is no need for precise alignment in a confined space, which greatly shortens the assembly time and reduces debugging costs. 2. Increased contact area enhances structural stability. (1) More difficult to disengage from the lock: The sliding seat is clamped to the track ring with a "U-shaped groove" or "semi-enclosed" clamp, forming a two-way clamping effect, effectively dispersing local stress. When the follower lock assembly is in the lock state, the connection between the track ring, the sliding seat, the first elastic element and the first rotating element is more stable. The outer ring wall of the track ring, the groove and the first elastic element work together to better lock the first rotating element. The follower lock assembly and the track ring are better fixed to each other. (2) Enhanced resistance to torsional load: The contact area between the follower lock assembly and the track ring is expanded, which significantly suppresses the radial micro-displacement of the track ring under dynamic load and avoids abnormal wear caused by off-center load.

[0042] This continuously variable transmission (CVT) achieves frictionless, continuous stepless gear shifting. It is lightweight and compact, allowing for installation at the center pedal position on a bicycle, resulting in a more balanced weight distribution. Bicycles using this CVT experience a significant increase in torque transmission, providing extremely smooth power delivery without any idling or power interruption. This results in higher transmission efficiency and smoother operation. Whether the bicycle is stationary, riding, or coasting, the desired gear ratio can be easily and quickly adjusted within the specified range, meeting the individualized pedaling force adjustment needs of riders.

[0043] It should be understood that the description in this section is not intended to identify key or important features of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0044] The accompanying drawings exemplify embodiments and form part of the specification, working together with the textual description to explain exemplary implementations of the embodiments. The drawings shown are for illustrative purposes only and do not limit the scope of the claims. Throughout the drawings, the same reference numerals refer to similar but not necessarily identical elements.

[0045] Figure 1 This is a perspective view of an embodiment of the continuously variable transmission (CVT) of this application;

[0046] Figure 2 for Figure 1 Exploded view of the embodiment shown;

[0047] Figure 3 for Figure 1 The schematic diagram of the embodiment shown is as follows;

[0048] Figure 4 for Figure 1 A perspective view of the continuously variable speed control mechanism in the illustrated embodiment;

[0049] Figure 5 for Figure 1 An exploded view of a portion of the continuously variable speed control mechanism in the illustrated embodiment;

[0050] Figure 6 for Figure 1 A perspective view of a portion of the speed control component in the illustrated embodiment;

[0051] Figure 7a for Figure 1 The locking state diagram of the follow-up locking component in the embodiment shown;

[0052] Figure 7b for Figure 1 The unlocking state diagram of the follow-up locking component in the illustrated embodiment;

[0053] Figure 8 for Figure 1 An exploded view of the follow-up locking assembly in the illustrated embodiment.

[0054] Explanation of reference numerals in the attached figures:

[0055]

[0056] Detailed Implementation

[0057] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0059] In the description of the embodiments of this application, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The term "multiple" means two or more, unless otherwise explicitly specified. The term "comprising" indicates the presence of the described feature, whole, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or sets thereof. The term "and / or" describes the relationship between related objects, indicating that three relationships may exist. For example, A and / or B may include three cases: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0060] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art; the terms used in the embodiments of this application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification, claims and foregoing description of the drawings of this application are intended to cover non-exclusive inclusion.

[0061] Furthermore, terms such as "exemplary," "for example," and "optional" are used to indicate illustrative purposes. Any technical solution described by the above terms in the embodiments of this application should not be construed as being more preferred or advantageous than other technical solutions. Specifically, these terms are intended to present the relevant technical concepts in terms of specific implementation methods.

[0062] Please see Figures 1 to 8 This application provides a continuously variable transmission (CVT) 1, which includes a speed input wheel 10, a continuously variable speed control mechanism 30, a speed output wheel 20, and a support assembly 40. The speed input wheel 10, the wheel assembly 31 of the continuously variable speed control mechanism 30, and the speed output wheel 20 are coaxially connected in sequence. The wheel assembly 31 of the continuously variable speed control mechanism 30 can reciprocate radially under the drive of the drive assembly 32 of the continuously variable speed control mechanism 30. The CVT 1 of this application can achieve frictionless continuous stepless speed change (the principle is described in detail below) and can be applied to products that require stepless speed change, such as bicycles.

[0063] Please see Figure 2 and Figure 3The speed input wheel 10 includes a first wheel body 11. A first sliding groove 111 is formed on the side of the first wheel body 11 facing the continuously variable speed mechanism 30. The first sliding groove 111 is used for sliding connection of a portion of the transmission components 62 of the continuously variable speed mechanism 30 (described in detail later). The number of first sliding grooves 111 is the same as the number of these transmission components 62, and the first sliding grooves 111 and transmission components 62 are arranged in a one-to-one correspondence. Please refer to... Figure 2 The first sliding groove 111 can be configured to gradually expand radially in the first wheel body 11, with the first sliding groove 111 gradually expanding from the center of the first wheel body 11 towards its periphery. The speed input wheel 10 also includes a speed input shaft 12, one end of which is connected to the middle of the first wheel body 11. The speed input shaft 12 is used to input rotational speed. The other end of the speed input shaft 12 can face away from the continuously variable speed control mechanism 30 and the speed output wheel 20; the other end of the speed input shaft 12 can also face away from the continuously variable speed control mechanism 30 and the speed output wheel 20, with the end of the speed input shaft 12 away from the first wheel body 11 successively passing through the middle of the rotating wheel assembly 31 of the continuously variable speed control mechanism 30 and the middle of the speed output wheel 20 (in conjunction with...). Figure 1 and Figure 2 The center of the rotating wheel assembly 31 and the center of the speed output wheel 20 are hollowed out. This allows rotational speed to be input from either one side of the first wheel body 11 or the side of the speed output wheel 20, making the continuously variable transmission 1 applicable to multiple scenarios. The speed input from the first wheel body 11 can also be achieved through a gear and rack connection (located on the side of the first wheel body 11 opposite to the speed output wheel 20), without specific limitations.

[0064] The speed output wheel 20 and the speed input wheel 10 can have the same structure, and their positions can be interchanged. Of course, the structures of the speed output wheel 20 and the speed input wheel 10 can also differ. Please refer to [link / reference]. Figure 1 and Figure 2 The speed output wheel 20 includes a second wheel body for outputting speed. A second sliding groove (not shown) is formed on the side of the second wheel body facing the continuously variable speed mechanism 30. The second sliding groove slidably connects to another part of the transmission component 62 of the continuously variable speed mechanism 30. The setting of the second sliding groove is similar to the setting of the first sliding groove 111 described above, and will not be repeated here. The speed of the second wheel body can be transmitted via a rotating shaft or via a gear and rack meshing connection (e.g.,...). Figure 1 and Figure 2 (As shown), no specific limitations are made.

[0065] Please see Figure 1 and Figure 2The support base assembly 40 plays a role in stabilizing the connection of the entire system. The support base assembly 40 includes multiple support bases, which are respectively fixedly connected to the speed input wheel 10, the speed output wheel 20 and the drive assembly 32 of the continuously variable speed mechanism 30 (described in detail later). The multiple support bases are connected to each other by means of welding, snap-fit ​​or screwing, so that the connection between the speed input wheel 10, the speed output wheel 20 and the drive assembly 32 is stable and the drive assembly 32 drives the wheel assembly 31 to move (described in detail later) effectively.

[0066] Please see Figure 1 The continuously variable transmission 1 of this application may also include a protective cover 70. The protective cover 70 is disposed outside the continuously variable transmission mechanism 30 and can protect the continuously variable transmission mechanism 30. The protective cover 70 can be connected to the support assembly 40, specifically by welding, snap-fitting or screwing.

[0067] The continuously variable transmission mechanism 30 plays a core role in realizing the function of the continuously variable transmission 1. The continuously variable transmission mechanism 30 will be described in detail below.

[0068] Please see Figures 2 to 4 The continuously variable speed control mechanism 30 includes a wheel assembly 31, a drive assembly 32, and a speed regulating assembly 33. The wheel assembly 31 includes a first wheel 311 and a second wheel 312 coaxially connected. There are two speed regulating assemblies 33, each coaxially connected to one side (specifically, the outer side) of the first wheel 311 and one side (specifically, the outer side) of the second wheel 312. The drive assembly 32 drives the wheel assembly 31 to reciprocate radially along the wheel assembly 31.

[0069] Please see Figures 2 to 7b The speed regulating assembly 33 includes a track ring 50 and at least two follower locking assemblies 60. The track ring 50 is annular and includes an outer ring wall and an inner ring wall. The follower locking assembly 60 includes a sliding seat 61, a transmission member 62, a first rotating member 63, and a first elastic member 64. The sliding seat 61 is slidably connected to the track ring 50, and a groove 611 is recessed on the side of the sliding seat 61 facing the track ring 50. The groove 611 extends radially in the track ring 50, and a portion of the groove 611 is located outside the outer ring wall. One end of the transmission component 62 is connected to the side of the sliding seat 61 away from the track ring 50. The transmission component 62 is opposite to the bottom of the groove 611. The other end of the transmission component 62 is slidably connected to the first sliding groove 111 or the second sliding groove. The ends of the transmission components 62 of the two speed regulating components 33 that are away from the sliding seat 61 are all oriented away from the wheel assembly 31 (i.e., opposite to each other). This facilitates the transmission component 62 slidably connected to the first sliding groove 111 to receive the input speed and the other part of the transmission component 62 slidably connected to the second sliding groove to output the variable speed to the second sliding groove. The first rotating component 63 and the first elastic component 64 are both located in the part of the groove 611 located outside the outer ring wall.

[0070] Please see Figure 7a and Figure 7b The side of the slide 611 facing the outer ring wall is inclined away from the outer ring wall. The side of the slide 611 facing the outer ring wall is the slope side 612. The first rotating member 63 and the first elastic member 64 are arranged in sequence along the second direction. The first rotating member 63 is closer to the bottom of the slope side 612 than the first elastic member 64. The first elastic member 64 is used to apply pressure to the first rotating member 63 so that the first rotating member 63 can move along the slope side 612 of the slide 611.

[0071] The follow-up locking assembly 60 is a one-way locking structure. Specifically, the follow-up locking assembly 60 has an unlocked state in which it can slide relative to the track ring 50 in a first direction (e.g., Figure 7b (as shown), and the locking state in which the relative track ring 50 cannot slide in the second direction (as shown). Figure 7a As shown), the second direction is opposite to the first direction. That is, the follow-up locking assembly 60 can only slide in one direction relative to the track ring 50. In the unlocked state (e.g. Figure 7b As shown), the first rotating member 63 can rotate. In the locked state (e.g.) Figure 7a As shown, the first rotating member 63 cannot rotate under the action of the outer ring wall, the sliding groove 611 and the first elastic member 64.

[0072] Please see Figure 7b The unlocking principle of the follower locking assembly 60 is as follows: When the follower locking assembly 60 intends to slide relative to the track ring 50 in the first direction, the track ring 50 rotates relative to the follower locking assembly 60 in the second direction. The ramp side 612 applies a frictional force to the first rotating member 63 in the first direction, while the outer ring wall applies a frictional force to the first rotating member 63 in the second direction. Thus, under the action of the outer ring wall, the ramp side 612, and the first elastic member 64, the first rotating member 63 moves towards the top of the ramp side 612. When the first rotating member 63 is not at the bottom of the ramp side 612, there is a sufficient gap between the first rotating member 63 and the outer ring wall, allowing the first rotating member 63 to rotate in the first direction (e.g., Figure 7b (As shown).

[0073] Please refer to 7a. The locking principle of the follower locking assembly 60 is as follows: When the follower locking assembly 60 wants to rotate relative to the track ring 50 in the second direction, the track ring 50 rotates relative to the follower locking assembly 60 in the first direction. The ramp side 612 applies a frictional force to the first rotating member 63 in the second direction, and at the same time, the outer ring wall applies a frictional force to the first rotating member 63 in the first direction. Thus, under the action of the outer ring wall, the ramp side 612 and the first elastic member 64, the first rotating member 63 moves towards the bottom of the ramp side 612. When the first rotating member 63 is at the bottom of the ramp side 612, the first rotating member 63 is (at least) locked by the wall of the slide groove 611 and cannot rotate.

[0074] It should be noted that the first and second directions mentioned above are only the directions of the follow-up locking assembly 60 and the track ring 50 relative to each other, and not the directions relative to other components (such as the speed input wheel 10 or the speed output wheel 20).

[0075] In the follow-up locking assembly 60 of this application, the follow-up locking assembly 60 adopts an external layout (assembled outside the track ring 50), which has many advantages compared with the built-in locking mechanism in the prior art (embedded in the narrow space inside the track ring). 1. Significantly improved preparation and installation efficiency. (1) Convenient processing: The track ring 50 does not need to be grooved, which simplifies the precision turning or casting process and reduces manufacturing costs and tolerance control difficulty. (2) High assembly fault tolerance: During installation, there is no need for precise alignment in a confined space, which greatly shortens the assembly time and reduces debugging costs. 2. Increased contact area enhances structural stability. (1) More difficult to disengage from the lock: The sliding seat 61 clamps the track ring 50 with a "U-shaped groove" or "semi-enclosed" clamping action, forming a two-way clamping effect, effectively dispersing local stress. When the follower lock assembly 60 is in the lock state, the connection between the track ring 50, the sliding seat 61, the first elastic element 64 and the first rotating element 63 is more stable. The outer ring wall of the track ring 50, the sliding groove 611 and the first elastic element 64 have a better locking effect on the first rotating element 63, so the follower lock assembly 60 is better fixed to the track ring 50 along the first direction; (2) Enhanced resistance to torsional load: The contact area between the follower lock assembly 60 and the track ring 50 is expanded, which significantly suppresses the radial micro-displacement of the track ring 50 under dynamic load, avoiding abnormal wear caused by off-center load.

[0076] In the continuously variable transmission (CVT) of this application, the rotary wheel assembly 31 reciprocates radially under the drive of the drive assembly 32. The range of speed changes is determined by the offset distance between the rotary wheel assembly 31 and the center of the speed input wheel 10 (specifically, the first wheel body 11) and the speed output wheel 20 (specifically, the second wheel body). When the track ring 50 is eccentric and rotates relative to the speed input wheel 10 and the speed output wheel 20, only the follower locking assembly 60 with the largest linear velocity is in a locked state and fixed to the track ring 50. The remaining follower locking assemblies 60 are in an unlocked state and slide relative to the track ring 50 in the first direction. The follower locking assemblies 60 are always in a unidirectional sliding state relative to the track ring 50. Multiple follower locking assemblies 60 can take turns driving each other. The speed of the follower locking assembly 60 increases, catches up with the one in front, and begins to function (fixed to the track ring 50). The follower locking assembly 60 in front slides backward relative to the track ring 50 (that is, slides relative to the track ring 50 in the first direction).

[0077] Please refer to the preceding text and... Figure 3 , Figure 7a and Figure 7b The input speed change principle of the continuously variable transmission 1 is as follows: The speed input wheel 10 drives the transmission component 62 connected to it to move. The movement of the transmission component 62 causes the sliding seat 61 to slide on the track ring 50. At the same time, the drive assembly 32 drives the rotating wheel assembly 31 to move radially. The movement of the rotating wheel assembly 31 causes the follower locking component 60 to undergo continuous linear velocity and angular velocity changes on the track ring 50. Among them, only the fastest follower locking component 60 will automatically lock the track ring 50, while the other follower locking components 60 will continue to follow on the track ring 50. The track ring 50 is locked by the fastest follower locking component 60 and will rotate synchronously with the follower locking component 60 with the highest linear velocity. By changing the eccentric distance of the track ring 50 relative to the speed input wheel 10 by driving the rotating wheel assembly 31, the maximum linear velocity of the follower locking component 60 can be changed, that is, the rotational speed of the track ring 50 can be changed, thereby realizing the adjustment of the rotational speed of the track ring 50.

[0078] Please see Figure 3 When the fastest-moving follower locking assembly 60 locks the track ring 50, and the other follower locking assemblies 60 move along the track ring 50, the minimum included angle between two adjacent follower locking assemblies 60 is N, and the maximum included angle is M. The value of M divided by N is the maximum speed range. The offset distance between the center of the track ring 50 and the center of the speed input wheel 10 and the speed output wheel 20 determines the maximum speed ratio. The included angle of the follower locking assembly 60 changes continuously from the minimum included angle N to the maximum included angle M along the track ring 50, thus forming a continuously variable transmission.

[0079] The output speed change principle of the continuously variable transmission 1 is as follows: The rotation of the track ring 50 (the track ring 50 near the speed input wheel 10) drives the rotating wheel assembly 31 to rotate coaxially. The rotation of the rotating wheel assembly 31 drives the track ring 50 near the speed output wheel 20 to rotate coaxially. The speed output wheel 20 rotates synchronously with the follower locking assembly 60 with the highest linear velocity via the transmission component 62 (the follower locking assembly 60 with the highest linear velocity is locked on the track ring 50 and fixed to the track ring 50, while the other follower locking assemblies 60 move along the track ring 50). When the drive assembly 32 drives the rotating wheel assembly 31 to move radially, the maximum linear velocity of the follower locking assembly 60 undergoes continuous linear velocity and angular velocity changes on the track ring 50, causing the rotation speed of the speed output wheel 20 to also change continuously, thereby realizing stepless adjustment of the rotation speed of the speed output wheel 20.

[0080] Please see Figure 7a and Figure 7b The sliding groove 611 is partially located within the inner ring wall. The follower locking assembly 60 also includes a second rotating member 65 and a second elastic member 66, which are disposed within the portion of the sliding groove 611 located within the inner ring wall. The shape of the portion of the sliding groove 611 located within the inner ring wall is symmetrical about the axis of the track ring 50 to the shape of the portion of the sliding groove 611 located outside the outer ring wall. The arrangement of the second rotating member 65 (and the second elastic member 66) is also symmetrical about the axis of the track ring 50 to the arrangement of the first rotating member 63 (and the first elastic member 64). In the locked state of the follower locking assembly 60, the second rotating member 65 cannot rotate under the action of the inner ring wall, the sliding groove 611, and the second elastic member 66. In this way, the follower locking assembly 60 can achieve the function of locking from both sides simultaneously. Compared with single-sided locking, the locking force of the follower locking assembly 60 of this application is greatly improved, making it less likely to disengage from the track ring 50. When the follower locking assembly 60 is in the unlocked state, the second rotating member 65 can rotate. Therefore, the follower locking assembly 60 can slide relative to the track ring 50 in the first direction.

[0081] Please see Figures 5 to 8 The sliding grooves 611 are multiple, arranged circumferentially along the track ring 50. The portions of the sliding grooves 611 opposite to the track ring 50 are interconnected. The portions of the sliding grooves 611 located outside the outer ring wall are spaced apart and have the same shape. The number of first rotating members 63 and first elastic members 64 is equal to the number of sliding grooves 611, and each of the first rotating members 63 and first elastic members 64 is correspondingly located within the portions of the sliding grooves 611 located outside the outer ring wall. Therefore, multiple first rotating members 63 and first elastic members 64 can be installed within the sliding seat 61, resulting in better sliding and locking effects of the follower locking assembly 60 on the track ring 50.

[0082] In the embodiment including the second rotating member 65 and the second elastic member 66, the portions of the plurality of slide grooves 611 located within the inner ring wall are spaced apart and have the same shape. The number of the second rotating members 65 and the second elastic members 66 is equal to the number of slide grooves 611, and the plurality of second rotating members 65 and the plurality of second elastic members 66 are respectively disposed in the portions of the plurality of slide grooves 611 located within the inner ring wall. Thus, a plurality of second rotating members 65 and second elastic members 66 can be installed within the slide grooves 611, thereby improving the sliding and locking effect of the follower locking assembly 60 on the track ring 50.

[0083] Please see Figures 7a to 8 The first elastic member 64 is arc-shaped and includes a first sub-part 641 and a second sub-part 642 connected to each other. The free end of the first sub-part 641 (the end not connected to the second sub-part 642) and the free end of the second sub-part 642 (the end not connected to the first sub-part 641) can move closer or further apart. The side of the first sub-part 641 facing away from the second sub-part 642 is slidably connected to the first rotating member 63, and the second sub-part 642 is connected to the sliding groove 611. Thus, the first elastic member 64 can cooperate with the sliding groove 611 to limit the first rotating member 63. The second sub-part 642 and the sliding groove 611 can be welded, abutted, bonded, or snapped together, without specific limitation. Furthermore, the first elastic member 64 can be generally U-shaped or V-shaped with a smooth corner transition. Shapes similar to the above shape (such as C-shaped or bracket-shaped) are all within the protection scope of this application.

[0084] Please see Figures 7a to 8 The connecting end of the second sub-part 642 (the end connected to the first sub-part 641) protrudes in a direction away from the first sub-part 641 to form a first stress portion 643, and the sliding groove 611 forms a first connecting groove corresponding to the first stress portion 643. Therefore, the second sub-part 642 can provide better stress support to the first sub-part 641, resulting in greater pressure from the first sub-part 641 on the first rotating member 63 and maintaining stability, preventing insufficient support.

[0085] Please see Figures 7a to 8In embodiments including a second rotating member 65 and a second elastic member 66, the structure of the second elastic member 66 can be similar to that of the first elastic member 64. Specifically, the second elastic member 66 can also be arc-shaped, and can include a third sub-part and a fourth sub-part connected to each other. The free ends of the third sub-part (the end not connected to the fourth sub-part) and the free ends of the fourth sub-part (the end not connected to the third sub-part) can move closer to or further away from each other. The side of the third sub-part facing away from the fourth sub-part is slidably connected to the second rotating member 65, and the fourth sub-part is connected to the sliding groove 611. The shape of the second elastic member 66 can be the same as or similar to that of the first elastic member 64. The connecting end of the fourth sub-part (the end connected to the third sub-part) can also be raised in a direction away from the third sub-part to form a second stress portion, and the sliding groove 611 forms a second connecting groove corresponding to the second stress portion.

[0086] Please combine Figures 2 to 8 The sliding seat 61 extends radially in the track ring 50, and the follower locking assembly 60 includes a first stop 67. The first stop 67 is connected to the sliding seat 61 and at least partially covers the opening of the groove 611 located outside the outer ring wall. The first stop 67 is used to prevent the first rotating member 63 from disengaging from the groove 611 and can prevent the first rotating member 63 from axially moving when sliding along the track ring 50. In an embodiment including a second rotating member 65 and a second elastic member 66, the follower locking assembly 60 includes a second stop 68. The second stop 68 is connected to the sliding seat 61 and at least partially covers the opening of the groove 611 located inside the inner ring wall. The second stop 68 is used to prevent the second rotating member 65 from disengaging from the groove 611. The structure of the second stop 68 may be the same as or different from that of the first stop 67. In this application, the first stop 67 and the second stop 68 can be assembled onto the sliding seat 61 first, and then the sliding seat 61 can be assembled onto the track ring 50. This makes the first stop 67, the second stop 68, and the sliding seat 61 a single unit, making the parts easy to remove and less likely to be lost. The first stop 67 and the second stop 68 can also be connected to the track ring 50 separately, or simultaneously to the sliding seat 61 and the track ring 50; no specific limitation is made. There can be a gap between the first stop 67 and the first rotating member 63, so that the first stop 67 will not interfere with the normal rotation of the first rotating member 63. There is also a gap between the second stop 68 and the second rotating member 65, so that the second stop 68 will not interfere with the normal rotation of the second rotating member 65.

[0087] Please see Figures 2 to 5The rotating wheel assembly 31 includes a first limiting member 313 and a second limiting member 314. The first limiting member 313 and the second limiting member 314 are respectively connected to the outer side of the first rotating wheel 311 and the outer side of the second rotating wheel 312. The first limiting member 313 and the second limiting member 314 face the side of the sliding seat 61 connected to the transmission member 62 in the two speed regulating assemblies 33. That is, a part of the sliding seat 61 is located between the first limiting member 313 and the first rotating wheel 311, and another part of the sliding seat 61 is located between the second limiting member 314 and the second rotating wheel 312. The first limiting member 313 and the second limiting member 314 are used to limit the axial movement of the sliding seat 61 along the track ring 50. Thus, the connection of the sliding seat 61 on the track ring 50 is stable, and the sliding seat 61 will not move axially during sliding. The first limiting member 313 and the second limiting member 314 can be in the shape of a circular plate or a circular ring.

[0088] The structure of the driver component 32 can vary, and this application does not specifically limit it. This application proposes one implementation method: Please refer to... Figures 2 to 4 The drive assembly 32 includes a collar 321, a connecting frame 322, and a drive component 323. One side of the collar 321 is connected to the connecting frame 322, and the collar 321 is sleeved around the wheel assembly 31 (specifically, between the first wheel 311 and the second wheel 312). The wheel assembly 31 is rotatably connected to the collar 321. The connecting frame 322 is movably connected (e.g., meshing) to the drive component 323, which can be a motor. The drive component 323 drives the connecting frame 322 to move via a worm gear mechanism. The movement of the connecting frame 322 drives the collar 321 and the wheel assembly 31 to move.

[0089] This application also proposes a bicycle including the aforementioned continuously variable transmission (CVT) 1. The CVT 1 of this application can be a centrally mounted CVT, which is lightweight and compact, and can be installed at the middle pedal position of the bicycle, resulting in a more reasonable center of gravity distribution. Bicycles using the CVT 1 of this application can significantly increase the transmission torque, providing very smooth power transmission without any idling or power interruption, resulting in higher transmission efficiency and smoother operation. Whether the bicycle is stopped, riding, or coasting, the desired gear ratio can be easily and quickly adjusted within the gear range, meeting the personalized adjustment needs of riders for pedaling force.

[0090] The above embodiments are only used to illustrate the present application and are not intended to limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included within the protection scope of the present application.

Claims

1. A speed regulating component, wherein the speed regulating component is applied to a continuously variable transmission (CVT), characterized in that, The speed regulating component includes a track ring and at least two follower locking components. The track ring includes an outer ring wall and an inner ring wall. The follower locking components include: A sliding seat is slidably connected to the track ring. A groove is recessed on the side of the sliding seat facing the track ring. The groove extends radially in the track ring, and a portion of the groove is located outside the outer ring wall. A transmission component, one end of which is connected to the side of the sliding seat away from the track ring, and the transmission component is opposite to the bottom of the groove; A first rotating member is disposed within the portion of the slide groove located outside the outer annular wall; and The first elastic element is disposed within the portion of the groove located outside the outer ring wall; The follow-up locking assembly is a one-way locking structure. The follow-up locking assembly has an unlocked state in which it can slide relative to the track ring in a first direction, and a locked state in which it cannot slide relative to the track ring in a second direction, the second direction being opposite to the first direction. In the unlocked state, the first rotating member can rotate, and in the locked state, the first rotating member cannot rotate under the action of the outer ring wall, the sliding groove, and the first elastic member.

2. The speed regulating component according to claim 1, characterized in that, The portion of the slide groove is located within the inner ring wall, and the follow-up locking assembly includes: The second rotating member is disposed within the portion of the slide groove located within the inner annular wall; and The second elastic element is disposed within the portion of the groove located within the inner ring wall; In the unlocked state, the second rotating member can rotate; In the locked state, the second rotating member cannot rotate under the action of the inner ring wall, the sliding groove and the second elastic member.

3. The speed regulating component according to claim 1, characterized in that, The side of the chute facing the outer ring wall is inclined away from the outer ring wall, and the side of the chute facing the outer ring wall is a slope side. The first rotating member and the first elastic member are arranged sequentially along the second direction. The first rotating member is closer to the bottom of the slope side than the first elastic member. The first elastic member is used to apply pressure to the first rotating member so that the first rotating member can move along the slope side.

4. The speed regulating component according to claim 3, characterized in that, The number of the slide grooves is multiple, and the multiple slide grooves are arranged circumferentially along the track ring. The portions of the multiple slide grooves opposite to the track ring are interconnected, and the portions of the multiple slide grooves located outside the outer ring wall are spaced apart and have the same shape. The number of the first rotating member and the first elastic member is equal to the number of the slide grooves, and the multiple first rotating members and the multiple first elastic members are respectively disposed in the portions of the multiple slide grooves located outside the outer ring wall.

5. The speed regulating component according to claim 1, characterized in that, The first elastic element is in the shape of an arc sheet. The first elastic element includes a first sub-part and a second sub-part that are connected to each other. The free ends of the first sub-part and the second sub-part can move closer to each other or further away from each other. The first sub-part is slidably connected to the first rotating member on the side away from the second sub-part, and the second sub-part is connected to the slide groove.

6. The speed regulating component according to claim 5, characterized in that, The first elastic element is U-shaped or V-shaped with a smooth transition at the corner.

7. The speed regulating component according to claim 5, characterized in that, The connecting end of the second sub-part protrudes in a direction away from the first sub-part to form a first stress portion, and the slide groove forms a first connecting groove corresponding to the first stress portion.

8. The speed regulating component according to claim 1, characterized in that, The sliding seat extends radially on the track ring, and the follow-up locking assembly includes: A first stop is connected to the sliding seat and / or the track ring. The first stop at least partially covers the slot opening of the slide groove located outside the outer ring wall. The first stop is used to prevent the first rotating member from disengaging from the slide groove.

9. A continuously variable speed control mechanism, characterized in that, The continuously variable speed control mechanism includes: The rotary assembly includes a first rotary wheel and a second rotary wheel that are coaxially connected. A drive assembly for driving the wheel assembly to reciprocate radially along the wheel assembly; and The speed regulating component according to any one of claims 1 to 8, wherein there are two speed regulating components, the track rings of the two speed regulating components are coaxially connected to one side of the first rotating wheel and one side of the second rotating wheel, and the end of the transmission member of the two speed regulating components away from the sliding seat is oriented away from the rotating wheel assembly.

10. The continuously variable speed control mechanism according to claim 9, characterized in that, The wheel assembly includes a first limiting member and a second limiting member, which are respectively connected to the first wheel and the second wheel. The first limiting member and the second limiting member face the side of the sliding seat connected to the transmission member in the two speed regulating assemblies. The first limiting member and the second limiting member are used to limit the sliding seat from moving axially along the track ring.

11. A continuously variable transmission, characterized in that, The continuously variable transmission includes: Speed ​​input wheel; Speed ​​output wheel; The continuously variable speed control mechanism of claim 9 or 10, wherein the continuously variable speed control mechanism is connected between the speed input wheel and the speed output wheel, the axis of the rotating wheel assembly of the continuously variable speed control mechanism coincides with or is parallel to the axes of the speed input wheel and the speed output wheel, one end of the transmission member of the speed control assembly away from the sliding seat is slidably connected to one side of the speed input wheel, and the other end of the transmission member of the speed control assembly away from the sliding seat is slidably connected to one side of the speed output wheel; and The support base assembly is a drive assembly that is fixedly connected to the speed input wheel, the speed output wheel, and the continuously variable speed control mechanism. When the track ring is eccentric and rotates relative to the speed input wheel and the speed output wheel, only the follower locking component with the largest linear velocity is in the locked state and fixed to the track ring, while the remaining follower locking components are in the unlocked state and slide relative to the track ring along the first direction.

12. A bicycle, characterized in that, The bicycle includes the continuously variable transmission (CVT) as described in claim 11.

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