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

Abstract

The invention provides a speed regulation assembly, a stepless speed regulation mechanism, a stepless speed changer and a bicycle. The speed regulating assembly comprises a track ring and at least two follow-up locking assemblies. Each follow-up locking assembly comprises a sliding seat, a transmission part, a first rotating part and a first elastic part. The sliding seat is in sliding connection with the track ring, and one side facing the track ring sinks to form a sliding groove; the first rotating piece and the first elastic piece are arranged in the portion, located outside the track ring, of the sliding groove. The follow-up locking assembly is of a one-way locking structure and has an unlocking state that the follow-up locking assembly can slide in the first direction relative to the track ring and a locking state that the follow-up locking assembly cannot slide in the second direction relative to the track ring, and the second direction is opposite to the first direction; in the unlocking state, the first rotating piece can rotate, and in the locking state, the first rotating piece cannot rotate. According to the speed regulating assembly, the track ring and the follow-up locking assembly are stably connected, and the locking effect of the follow-up locking assembly is good.

Description

Technical Field

[0001] The present application relates to the technical field of bicycles, and in particular to a speed regulating assembly, a stepless speed regulating mechanism, a continuously variable transmission and a bicycle. Background Art

[0002] Prior art bicycles and power-assisted bicycles primarily utilize stepped transmissions, which come in two types: internal and external. Both types have limited fixed gears, often resulting in excessive pedaling force to shift up a gear and insufficient force to shift down a gear. This fails to meet the individual pedaling force requirements of riders. Furthermore, internal transmissions are heavy, while external transmissions can easily cause chain drop during gear changes, leading to certain drawbacks in transmissions used on bicycles and power-assisted bicycles.

[0003] Related art discloses a continuously variable transmission and bicycle. In this technical solution, while maintaining a constant speed of the first power wheel, the speed regulating wheel is adjusted to change the eccentric distance of the speed-changing wheel relative to the first power wheel, thereby varying the rotational speed of the speed-changing wheel. This achieves continuously variable speed change and satisfies the need for personalized adjustment of pedaling force during riding. However, the design of the first locking member and the speed-changing wheel in this technical solution is relatively crude, making preparation and installation inconvenient, and the locking effect still needs to be improved.

[0004] It is important to note that the techniques described in this section are not necessarily those that have been previously conceived or employed. Unless otherwise indicated, it should not be assumed that any technique described in this section is prior art simply because it is included in this section. Similarly, unless otherwise indicated, the issues mentioned in this section should not be considered to have been recognized as prior art. Summary of the Invention

[0005] The present application provides a speed regulating assembly, a stepless speed regulating mechanism, a continuously variable transmission and a bicycle, aiming to solve the technical problem of the relatively rough design of the first locking member and the speed generating wheel in the prior art.

[0006] In a first aspect, the present application provides a speed regulating assembly, comprising a track ring and at least two follower locking assemblies, wherein the track ring comprises an outer ring wall and an inner ring wall, and the follower locking assemblies comprise:

[0007] a sliding seat, slidably connected to the track ring, wherein a side of the sliding seat facing the track ring is recessed to form a slide groove, the slide groove extends in the radial direction of the track ring, and a portion of the slide groove is located outside the outer ring wall;

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

[0009] A first rotating member is provided in a portion of the slide groove outside the outer ring wall; and

[0010] a first elastic member, disposed in a portion of the slide groove outside the outer ring wall;

[0011] The follower locking assembly is a one-way locking structure, and the follower locking assembly has an unlocked state in which it can slide in a first direction relative to the track ring, and a locked state in which it cannot slide in a second direction relative to the track ring, and the second direction is 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 slide groove and the first elastic member.

[0012] Optionally, part of the slide groove is located within the inner ring wall, and the follower locking assembly includes:

[0013] A second rotating member is provided in the portion of the slide groove located in the inner ring wall; and

[0014] a second elastic member, disposed in a portion of the slide groove located within the inner ring wall;

[0015] In the unlocked state, the second rotating member is rotatable;

[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 slide groove facing the outer annular wall is inclined toward a direction away from the outer annular wall, and the side of the slide groove facing the outer annular wall is a slope side. The first rotating member and the first elastic member are arranged in sequence along the second direction. The first rotating member is closer to the bottom of the slope side relative to 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, and the multiple slide grooves are arranged along the circumference of the track ring. The parts of the multiple slide grooves opposite to the track ring are connected to each other, and the parts of the multiple slide grooves located outside the outer ring wall are spaced apart from each other and have the same shape; the number of the first rotating members and the first elastic members is equal to the number of the slide grooves, and the multiple first rotating members and the multiple first elastic members are arranged one by one in the parts of the multiple slide grooves located outside the outer ring wall.

[0019] Optionally, the first elastic member is in the shape of an arc-shaped sheet, and the first elastic member includes a first sub-section and a second sub-section that are connected to each other, the free end of the first sub-section and the free end of the second sub-section can approach or move away from each other, the first sub-section is slidable away from the side of the second sub-section and is connected to the first rotating member, and the second sub-section is connected to the slide groove.

[0020] Optionally, the first elastic member is U-shaped or V-shaped with smoothly transitioned corners.

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

[0022] Optionally, the second elastic member is in the shape of an arc-shaped sheet, and the second elastic member includes a third sub-section and a fourth sub-section that are connected to each other, the free end of the third sub-section and the free end of the fourth sub-section can approach or move away from each other, the third sub-section is slid away from the side of the fourth sub-section and is connected to the second rotating member, and the fourth sub-section is connected to the slide groove.

[0023] Optionally, the second elastic member is U-shaped or V-shaped with a smoothly transitioned corner.

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

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

[0026] The first stopper is connected to the sliding seat and / or the track ring. The first stopper at least partially covers the notch of the slide groove outside the outer ring wall. The first stopper is used to prevent the first rotating member from leaving the slide groove.

[0027] Optionally, the follower locking assembly includes:

[0028] The second stopper is connected to the sliding seat and / or the track ring, and the second stopper at least partially covers the notch of the slide groove located in the inner ring wall. The second stopper is used to prevent the second rotating member from disengaging from the slide groove.

[0029] A second aspect of the present application provides a stepless speed regulating mechanism, the stepless speed regulating mechanism comprising:

[0030] The runner assembly comprises a first runner and a second runner coaxially connected;

[0031] a driving assembly, configured to drive the wheel assembly to reciprocate along its radial direction; and

[0032] The speed regulation assembly described in any of the above items, the number of the speed regulation assemblies is two, the track rings of the two speed regulation assemblies are coaxially connected to one side of the first rotating wheel and one side of the second rotating wheel respectively, and the ends of the transmission parts of the two speed regulation assemblies away from the sliding seat are both facing away from the wheel assembly.

[0033] Optionally, the wheel assembly includes a first limit member and a second limit member, the first limit member and the second limit member are respectively connected to the first wheel and the second wheel, the first limit member and the second limit member respectively face the side of the sliding seat connected to the transmission member in the two speed regulation assemblies, and the first limit member and the second limit member are used to limit the axial movement of the sliding seat along the track ring.

[0034] A third aspect of the present application provides a continuously variable transmission, comprising:

[0035] Speed ​​input wheel;

[0036] Speed ​​output wheel;

[0037] The stepless speed regulation mechanism described in any of the above items is connected between the speed input wheel and the speed output wheel, the axis of the rotary wheel assembly of the stepless speed regulation mechanism coincides with or is parallel to the axis of the speed input wheel and the speed output wheel, a transmission member of one speed regulation assembly is slidably connected to one side of the speed input wheel at one end away from the sliding seat, and a transmission member of another speed regulation assembly is slidably connected to one side of the speed output wheel at one end away from the sliding seat; when the track ring is eccentric relative to the speed input wheel and the speed output wheel and rotates, only the follow-up locking assembly with the largest linear speed is in the locking state and is fixed to the track ring, and the remaining follow-up locking assemblies are in the unlocking state and slide relative to the track ring along the first direction.

[0038] Optionally, the continuously variable transmission comprises:

[0039] The support seat assembly is fixedly connected to the speed input wheel, the speed output wheel and the drive assembly of the stepless speed regulation mechanism.

[0040] A fourth aspect of the present application provides a bicycle comprising the continuously variable transmission described above.

[0041] In the follow-up locking assembly of the present application, the follow-up locking assembly adopts an external layout (assembled on the outside of the track ring), which has many beneficial effects compared to the built-in locking mechanism in the prior art (embedded in the narrow space inside the track ring). 1. The preparation and installation efficiency are significantly improved. (1) Convenient processing: The track ring does not need to have grooves, which simplifies the precision turning or casting process, reduces manufacturing costs and the difficulty of tolerance control. (2) High assembly tolerance: There is no need for precise alignment in a confined space during installation, which greatly shortens the assembly time and reduces debugging costs. 2. The contact area is expanded to enhance structural stability. (1) It is more difficult to disengage from the locking mechanism: the sliding seat is clamped to the track ring in a "U-shaped groove" or "semi-enclosed" clamping manner, forming a two-way clamping effect, which effectively disperses local stress. When the follower locking assembly is in the locking state, the connection between the track ring, the sliding seat, the first elastic member and the first rotating member is more stable. The outer ring wall of the track ring, the sliding groove and the first elastic member work together to achieve a better locking effect on the first rotating member, and the follower locking assembly and the track ring are better fixed to each other; (2) The torsional load resistance is enhanced: the contact area between the follower locking 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 eccentric load.

[0042] The continuously variable transmission (CVT) of this application enables frictionless, continuous, stepless speed change. It is lightweight and compact, and can be installed in the middle pedal position of a bicycle, which improves the distribution of the bicycle's center of gravity. A bicycle using this CVT significantly increases the torque it transmits, ensuring smooth power transmission without stalling or power interruptions. This results in higher transmission efficiency and smoother operation. Whether the bicycle is stopped, riding, or coasting, it can easily and quickly adjust to the desired speed ratio within the speed range, meeting the individual needs for adjusting pedaling force while riding.

[0043] It should be understood that the content described in this section is not intended to identify the 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 easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings illustrate exemplary embodiments and constitute a part of the specification. Together with the description of the specification, they serve to explain exemplary implementations of the embodiments. The drawings are shown for illustrative purposes only and do not limit the scope of the claims. Throughout the drawings, the same reference numerals designate similar, but not necessarily identical, elements.

[0045] Figure 1 A perspective view of an embodiment of a continuously variable transmission of the present application;

[0046] Figure 2 for Figure 1 an exploded view of the illustrated embodiment;

[0047] Figure 3 for Figure 1 A schematic diagram of the principle of the embodiment shown;

[0048] Figure 4 for Figure 1 A perspective view of the stepless speed regulating mechanism in the illustrated embodiment;

[0049] Figure 5 for Figure 1 An exploded view of a portion of the structure of the stepless speed regulating mechanism in the illustrated embodiment;

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

[0051] Figure 7a for Figure 1 A diagram of the locking state of the follower locking assembly in the illustrated embodiment;

[0052] Figure 7b for Figure 1 A diagram of the unlocked state of the follower locking assembly in the illustrated embodiment;

[0053] Figure 8 for Figure 1 Exploded view of the follower latch assembly in the illustrated embodiment.

[0054] Description of reference numerals:

[0055]

[0056] DETAILED DESCRIPTION

[0057] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

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

[0059] In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot 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; the term "multiple" means two or more, unless otherwise clearly and specifically defined; the term "including" indicates the existence of the described features, wholes, steps, operations, elements and / or components, but does not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections; the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may include the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0060] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as those generally understood by technicians in the relevant technical field; the terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the description and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0061] In addition, words such as "exemplary," "for example," and "optional" are used to indicate examples, and any technical solution described by such words in the embodiments of this application should not be construed as being more preferred or advantageous than other technical solutions. Rather, these words are intended to present the relevant technical concepts in specific implementations.

[0062] See also Figures 1 to 8 The present application provides a continuously variable transmission 1, which includes a speed input wheel 10, a stepless speed regulating mechanism 30, a speed output wheel 20, and a support seat assembly 40. The speed input wheel 10, the rotating wheel assembly 31 of the stepless speed regulating mechanism 30, and the speed output wheel 20 are coaxially connected in sequence, wherein the rotating wheel assembly 31 of the stepless speed regulating mechanism 30 can reciprocate along its radial direction under the drive of the driving assembly 32 of the stepless speed regulating mechanism 30. The continuously variable transmission 1 of the present application can achieve non-friction continuous stepless speed change (the principle will be described in detail later) and can be applied to products that require stepless speed change, such as bicycles.

[0063] See also 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 stepless speed regulating mechanism 30. The first sliding groove 111 is used to slideably connect with a portion of the transmission member 62 (described in detail later) of the stepless speed regulating mechanism 30. The number of the first sliding grooves 111 is the same as the number of the transmission member 62, and the first sliding grooves 111 and the transmission member 62 are arranged in a one-to-one correspondence. Figure 2 , the first sliding groove 111 can be set to be gradually expanded in the radial direction of the first wheel body 11, and the first sliding groove 111 gradually expands from the center of the first wheel body 11 to the periphery of the first wheel body 11. The speed input wheel 10 also includes a speed input shaft 12, one end of the speed input shaft 12 is connected to the middle of the first wheel body 11. The speed input shaft 12 is used to input the rotation speed. The other end of the speed input shaft 12 can be oriented in a direction away from the stepless speed regulation mechanism 30 and the speed output wheel 20; the other end of the speed input shaft 12 can also be oriented in the direction of the stepless speed regulation mechanism 30 and the speed output wheel 20, and the end of the speed input shaft 12 away from the first wheel body 11 sequentially passes through the middle of the wheel assembly 31 of the stepless speed regulation mechanism 30 and the middle of the speed output wheel 20 (combined 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. Thus, the rotational speed can be input from one side of the first wheel body 11 or one side of the speed output wheel 20, making the continuously variable transmission 1 of the present application suitable for a variety of use scenarios. The speed input to the first wheel body 11 can also be via a gear rack meshing connection (located on the side of the first wheel body 11 facing away from the speed output wheel 20), without specific limitation.

[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 speed output wheel 20 and the speed input wheel 10 can also have different structures. Figure 1 and Figure 2 The speed output wheel 20 includes a second wheel body, which is used to output the speed. A second sliding groove (not shown) is formed on the side of the second wheel body facing the stepless speed regulating mechanism 30. The second sliding groove is slidably connected to another part of the transmission member 62 of the stepless speed regulating mechanism 30. The setting of the second sliding groove can refer to the setting of the first sliding groove 111 mentioned above, and will not be described in detail. The speed output of the second wheel body can be transmitted by a rotating shaft or by a gear rack meshing connection (such as Figure 1 and Figure 2 ), without specific limitation.

[0065] See also Figure 1 and Figure 2The support seat assembly 40 plays a role of stable connection for the whole system. The support seat assembly 40 comprises a plurality of support seats which are respectively fixedly connected with the speed input wheel 10, the speed output wheel 20 and the drive assembly 32 (to be described later) of the stepless speed regulation mechanism 30, and are connected with each other (for example, welded, clamped or screwed) to stabilize the connection of the speed input wheel 10, the speed output wheel 20 and the drive assembly 32, and to improve the effect of the drive assembly 32 driving the rotation wheel assembly 31 to move (to be described later).

[0066] Referring to Figure 1 The stepless variable speed transmission 1 can further comprise a protective cover 70. The protective cover 70 covers the stepless speed regulation mechanism 30 to protect the stepless speed regulation mechanism 30. The protective cover 70 can be connected with the support seat assembly 40, and the two can be welded, clamped or screwed.

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

[0068] Referring to Figures 2 to 4 The stepless speed regulation mechanism 30 comprises a rotation wheel assembly 31, a drive assembly 32 and a speed regulation assembly 33. The rotation wheel assembly 31 comprises a first rotation wheel 311 and a second rotation wheel 312 which are coaxially connected. The speed regulation assembly 33 comprises two, and the two speed regulation assemblies 33 are coaxially connected with one side (specifically, the outer side) of the first rotation wheel 311 and one side (specifically, the outer side) of the second rotation wheel 312, respectively. The drive assembly 32 is used to drive the rotation wheel assembly 31 to reciprocate along the radial direction of the rotation wheel assembly 31.

[0069] Referring to Figures 2 to 7b The speed regulation assembly 33 comprises a track ring 50 and at least two follow-up stop assemblies 60. The track ring 50 is in the shape of a ring, and comprises an outer ring wall and an inner ring wall. The follow-up stop assembly 60 comprises a sliding seat 61, a transmission member 62, a first rotating member 63 and a first elastic member 64. The sliding seat 61 is slidingly connected with the track ring 50, and a sliding groove 611 is recessed on the side of the sliding seat 61 facing the track ring 50, the sliding groove 611 extends in the radial direction of the track ring 50, and part of the sliding groove 611 is located outside the outer ring wall. One end of the transmission member 62 is connected with the side of the sliding seat 61 away from the track ring 50, the transmission member 62 is opposite to the groove bottom of the sliding groove 611, and the other end of the transmission member 62 is slidingly connected with the first sliding slot 111 or the second sliding slot. The ends of the transmission members 62 of the two speed regulation assemblies 33 away from the sliding seat 61 are both directed away from the rotation wheel assembly 31 (i.e., opposite to each other), so that the transmission member 62 slidingly connected with the first sliding slot 111 receives the input rotation speed, and the other part of the transmission member 62 slidingly connected with the second sliding slot outputs the variable speed rotation speed to the second sliding slot. The first rotating member 63 and the first elastic member 64 are both arranged in the part of the sliding groove 611 located outside the outer ring wall.

[0070] See also Figure 7a and Figure 7b The side of the slide groove 611 facing the outer ring wall is inclined toward the direction away from the outer ring wall, and the side of the slide groove 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 groove 611.

[0071] The follower locking assembly 60 is a one-way locking structure. Specifically, the follower locking assembly 60 has an unlocked state (such as Figure 7b ), and the locked state in which the relative track ring 50 cannot slide in the second direction (as shown in FIG. Figure 7a As shown), the second direction is opposite to the first direction. That is, the follower locking assembly 60 can only slide in one direction relative to the track ring 50. In the unlocked state (as shown Figure 7b As shown), the first rotating member 63 can rotate. 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] See also Figure 7b , the unlocking principle of the follower locking assembly 60 is as follows: when the follower locking assembly 60 is intended to slide in the first direction relative to the track ring 50, the track ring 50 rotates in the second direction relative to the follower locking assembly 60, and the slope side 612 applies a friction force to the first rotating member 63 in the first direction, and at the same time, the outer ring wall applies a friction force to the first rotating member 63 in the second direction, so that under the action of the outer ring wall, the slope side 612 and the first elastic member 64, the first rotating member 63 moves toward the top of the slope side 612. When the first rotating member 63 is not at the bottom of the slope side 612, there is enough gap between the first rotating member 63 and the outer ring wall so that the first rotating member 63 can rotate in the first direction (such as Figure 7b shown).

[0073] Please refer to 7a. The locking principle of the follower locking assembly 60 is as follows: when the follower locking assembly 60 is to rotate in the second direction relative to the track ring 50, the track ring 50 rotates in the first direction relative to the follower locking assembly 60, and the slope side 612 applies a friction force to the first rotating member 63 toward the second direction. At the same time, the outer ring wall applies a friction force to the first rotating member 63 toward the first direction, so that under the action of the outer ring wall, the slope side 612 and the first elastic member 64, the first rotating member 63 moves toward the bottom of the slope side 612. When the first rotating member 63 is located at the bottom of the slope 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 above-mentioned first direction and second direction are only the directions of the follower locking assembly 60 and the track ring 50 relative to each other, and are not the directions relative to other components (such as the speed input wheel 10 or the speed output wheel 20).

[0075] In the follower locking assembly 60 of the present application, the follower locking assembly 60 adopts an external layout (assembled on the outside of the track ring 50), which has many beneficial effects compared to the built-in locking mechanism in the prior art (embedded in the narrow space inside the track ring). 1. The preparation and installation efficiency are significantly improved. (1) Convenient processing: The track ring 50 does not require a groove, which simplifies the precision turning or casting process, reduces manufacturing costs and the difficulty of tolerance control. (2) High assembly tolerance: There is no need for precise alignment in a confined space during installation, which greatly shortens the assembly time and reduces debugging costs. 2. The contact area is expanded to enhance structural stability. (1) It is more difficult to disengage from the locking mechanism: the sliding seat 61 is clamped in a "U-shaped groove" or "semi-enclosed" manner to fit the track ring 50, forming a two-way clamping effect, which effectively disperses local stress. When the follower locking assembly 60 is in the locking state, the connection between the track ring 50, the sliding seat 61, the first elastic member 64 and the first rotating member 63 is more stable, and the outer ring wall of the track ring 50, the sliding groove 611 and the first elastic member 64 have a better locking effect on the first rotating member 63, so that the follower locking assembly 60 is better fixed to the track ring 50 along the first direction; (2) The torsional load resistance is enhanced: the contact area between the follower locking assembly 60 and the track ring 50 is expanded, which significantly suppresses the radial micro-displacement of the track ring 50 under dynamic load, and avoids abnormal wear caused by unbalanced load.

[0076] In the continuously variable transmission of the present application, the rotating wheel assembly 31 reciprocates radially under the drive of the drive assembly 32. The speed range is determined by the offset distance between the rotating 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 relative to the speed input wheel 10 and the speed output wheel 20 and rotates, only the follower locking assembly 60 with the highest linear velocity is locked and fixed to the track ring 50. The remaining follower locking assemblies 60 are unlocked and slide relative to the track ring 50 in a first direction. The follower locking assembly 60 is permanently in a unidirectional sliding state relative to the track ring 50. Multiple follower locking assemblies 60 can relay drive. When the following follower locking assembly 60 accelerates, catches up with the preceding one, and begins to function (fixed to the track ring 50), the preceding follower locking assembly 60 slides backward relative to the track ring 50 (i.e., slides relative to the track ring 50 in the first direction).

[0077] Please combine the above 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 member 62 connected to it to move. The movement of the transmission member 62 causes the sliding seat 61 to slide on the track ring 50. Simultaneously, 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 assembly 60 on the track ring 50 to undergo continuous changes in linear velocity and angular velocity. Only the fastest follower locking assembly 60 automatically locks the track ring 50, while the other follower locking assemblies 60 continue to follow the track ring 50. The track ring 50, locked by the fastest follower locking assembly 60, rotates synchronously with the follower locking assembly 60 with the highest linear velocity. By driving the rotating wheel assembly 31 to change the eccentric distance of the track ring 50 relative to the speed input wheel 10, the maximum linear velocity of the follower locking assembly 60, that is, the rotational speed of the track ring 50, can be changed, thereby adjusting the rotational speed of the track ring 50.

[0078] See also Figure 3 When the fastest follower-lock assembly 60 locks onto the track ring 50 and the other follower-lock assemblies 60 follow along, the minimum angle between two adjacent follower-lock assemblies 60 is N, and the maximum angle is M. The value of M divided by N represents the maximum speed range. The maximum speed ratio is determined by the offset distance between the track ring 50 and the center of the speed input wheel 10 and the speed output wheel 20. The angle of the follower-lock assembly 60 changes continuously from the minimum angle N to the maximum angle M along the track ring 50, thus achieving stepless speed change.

[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 coaxial rotation of the runner assembly 31. The rotation of the runner assembly 31 drives the coaxial rotation of the track ring 50 near the speed output wheel 20. The speed output wheel 20 rotates synchronously with the follower lock assembly 60 with the highest linear velocity via the transmission member 62 (the follower lock assembly 60 with the highest linear velocity is locked to the track ring 50 and fixed to the track ring 50, while the remaining follower lock assemblies 60 follow the track ring 50). When the drive assembly 32 drives the runner assembly 31 to move radially, the maximum linear velocity of the follower lock assembly 60 undergoes continuous linear velocity and angular velocity changes on the track ring 50, causing the rotational speed of the speed output wheel 20 to also continuously change, thereby achieving stepless adjustment of the rotational speed of the speed output wheel 20.

[0080] See also Figure 7a and Figure 7b The slide groove 611 is partially located within the inner ring wall. The follower locking assembly 60 further includes a second rotating member 65 and a second elastic member 66. The second rotating member 65 and the second elastic member 66 are disposed within the portion of the slide groove 611 located within the inner ring wall. The shape of the portion of the slide groove 611 located within the inner ring wall is symmetrical with the shape of the portion of the slide groove 611 located outside the outer ring wall about the axis of the track ring 50. The arrangement of the second rotating member 65 (and the second elastic member 66) is also symmetrical with the arrangement of the first rotating member 63 (and the first elastic member 64) about the axis of the track ring 50. In the locked state of the follower locking assembly 60, the second rotating member 65 is prevented from rotating due to the action of the inner ring wall, the slide groove 611, and the second elastic member 66. This allows the follower locking assembly 60 to achieve dual-sided locking. Compared to single-sided locking, the locking force of the follower locking assembly 60 is greatly improved, making it more difficult to disengage from the track ring 50. In the unlocked state of the follower locking assembly 60, the second rotating member 65 can rotate. As a result, the follower locking assembly 60 can slide relative to the track ring 50 along the first direction.

[0081] See also Figures 5 to 8 There are multiple slide grooves 611, which are arranged along the circumference of the track ring 50. The portions of the multiple slide grooves 611 facing the track ring 50 are interconnected. The portions of the multiple slide 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 slide grooves 611. The multiple first rotating members 63 and the multiple first elastic members 64 are correspondingly disposed in the portions of the multiple slide grooves 611 located outside the outer ring wall. As a result, multiple first rotating members 63 and first elastic members 64 can be installed in the sliding seat 61, thereby improving the 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 multiple slide grooves 611 located within the inner ring wall are spaced apart and have the same shape. The number of second rotating members 65 and second elastic members 66 is equal to the number of slide grooves 611. The multiple second rotating members 65 and the multiple second elastic members 66 are disposed in a one-to-one correspondence within the portions of the multiple slide grooves 611 located within the inner ring wall. Thus, multiple second rotating members 65 and second elastic members 66 can be mounted within the slide grooves 611, thereby improving the sliding and locking effects of the follower locking assembly 60 on the track ring 50.

[0083] See also Figures 7a to 8 The first elastic member 64 is in the shape of an arc-shaped sheet. The first elastic member 64 includes a first sub-portion 641 and a second sub-portion 642 that are connected to each other. The free end of the first sub-portion 641 (the end not connected to the second sub-portion 642) and the free end of the second sub-portion 642 (the end not connected to the first sub-portion 641) can move closer to or farther away from each other. The first sub-portion 641 slides away from the side of the second sub-portion 642 to connect to the first rotating member 63, and the second sub-portion 642 is connected to the slide groove 611. Thus, the first elastic member 64 can cooperate with the slide groove 611 to limit the first rotating member 63. The second sub-portion 642 and the slide groove 611 can be welded, abutted, bonded or clamped, without specific limitation. Furthermore, the first elastic member 64 can be roughly U-shaped or V-shaped with a smooth transition at the corners. Shapes similar to the above shapes (such as C-shaped or bracket-shaped) are all within the scope of protection of this application.

[0084] See also Figures 7a to 8 The connecting end of the second sub-section 642 (the end connected to the first sub-section 641) is raised in a direction away from the first sub-section 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. As a result, the second sub-section 642 can provide better stress support for the first sub-section 641, so that the pressure exerted by the first sub-section 641 on the first rotating member 63 is relatively large and stable, and the support is not weak.

[0085] See also Figures 7a to 8In an embodiment 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 in the shape of an arc-shaped sheet, and the second elastic member 66 can also include a third sub-section and a fourth sub-section that are connected to each other. The free end of the third sub-section (the end not connected to the fourth sub-section) and the free end of the fourth sub-section (the end not connected to the third sub-section) can move closer to or farther away from each other. The third sub-section is slidably connected to the second rotating member 65 on the side facing away from the fourth sub-section, and the fourth sub-section is connected to the slide 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-section (the end connected to the third sub-section) can also be raised in a direction away from the third sub-section to form a second stress portion, and the slide 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 stopper 67. The first stopper 67 is connected to the sliding seat 61 and at least partially covers the notch of the slide groove 611 located outside the outer ring wall. The first stopper 67 is used to prevent the first rotating member 63 from disengaging from the slide groove 611. The first stopper 67 can prevent the first rotating member 63 from axially moving when sliding along the track ring 50. In the embodiment including the second rotating member 65 and the second elastic member 66, the follower locking assembly 60 includes a second stopper 68. The second stopper 68 is connected to the sliding seat 61 and at least partially covers the notch of the slide groove 611 located inside the inner ring wall. The second stopper 68 is used to prevent the second rotating member 65 from disengaging from the slide groove 611. The structure of the second stopper 68 and the first stopper 67 can be the same or different. In the present application, the first stopper 67 and the second stopper 68 can be assembled to the sliding seat 61 first, and then the sliding seat 61 can be assembled to the track ring 50. In this way, the first stopper 67, the second stopper 68 and the sliding seat 61 are integrated, and the parts are easy to pick up and not easy to lose. The first stopper 67 and the second stopper 68 can also be connected to the track ring 50 separately, or connected to the sliding seat 61 and the track ring 50 at the same time, without specific limitation. There can be a gap between the first stopper 67 and the first rotating member 63, so that the first stopper 67 will not interfere with the normal rotation of the first rotating member 63. There is also a gap between the second stopper 68 and the second rotating member 65, so that the second stopper 68 will not interfere with the normal rotation of the second rotating member 65.

[0087] See also Figures 2 to 5The wheel assembly 31 includes a first limiting member 313 and a second limiting member 314, which 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 respectively face the side of the sliding seat 61 in the two speed regulating assemblies 33 connected to the transmission member 62, that is, a part of the sliding seat 61 is located between the first limiting member 313 and the first rotating wheel 311, and the other 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. As a result, the connection of the sliding seat 61 on the track ring 50 is stable, and the sliding seat 61 will not move axially during the sliding process. The first limiting member 313 and the second limiting member 314 can be respectively in the shape of a circular plate or a circular ring.

[0088] There are many structures of the drive assembly 32, and this application does not make specific restrictions on this. This application proposes an implementation method: Please combine Figures 2 to 4 The drive assembly 32 includes a collar 321, a connecting frame 322, and a driving member 323. One side of the collar 321 is connected to the connecting frame 322. The collar 321 is sleeved on the outside of the rotating wheel assembly 31 (specifically, between the first rotating wheel 311 and the second rotating wheel 312). The rotating wheel assembly 31 is rotatably connected to the collar 321. The connecting frame 322 is movably connected (e.g., meshed) to the driving member 323, which can be a motor. The driving member 323 drives the connecting frame 322 to move through the cooperation of a worm gear. The movement of the connecting frame 322 can drive the collar 321 and the rotating wheel assembly 31 to move.

[0089] The present application also proposes a bicycle, which includes the continuously variable transmission 1 described above. The continuously variable transmission 1 of the present application can be a mid-mounted continuously variable transmission, which is lightweight and compact, and can be installed at the middle pedal position of the bicycle, so that the center of gravity distribution of the bicycle is more reasonable. The transmission torque of a bicycle using the continuously variable transmission 1 of the present application can be greatly increased, the power transmission is very smooth, and there will be no idle jamming or power interruption. The transmission efficiency is higher and the operation is smoother. When the bicycle is in a stopped state, a riding state, or a coasting state, it can be easily and quickly adjusted to the speed ratio that people want within the speed range, which can meet people's personalized adjustment needs for pedaling force when riding.

[0090] The above embodiments are only used to illustrate the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A speed regulating assembly, which is applied to a continuously variable transmission, characterized in that: The speed regulating assembly includes a track ring and at least two follower locking assemblies, wherein the track ring includes an outer ring wall and an inner ring wall, and the follower locking assembly includes: a sliding seat, slidably connected to the track ring, wherein a side of the sliding seat facing the track ring is recessed to form a slide groove, the slide groove extends in the radial direction of the track ring, and a portion of the slide groove is located outside the outer ring wall; a transmission member, one end of which is connected to a side of the sliding seat facing away from the track ring, and the transmission member is opposite to the bottom of the sliding groove; A first rotating member is provided in a portion of the slide groove outside the outer ring wall; and a first elastic member, disposed in a portion of the slide groove outside the outer ring wall; The follower locking assembly is a one-way locking structure, and the follower locking assembly has an unlocked state in which it can slide in a first direction relative to the track ring, and a locked state in which it cannot slide in a second direction relative to the track ring, and the second direction is 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 slide groove and the first elastic member.

2. The speed regulating assembly according to claim 1, characterized in that: Part of the slide groove is located in the inner ring wall, and the follower locking assembly includes: A second rotating member is provided in the portion of the slide groove located in the inner ring wall; and a second elastic member, disposed in a portion of the slide groove located within the inner ring wall; In the unlocked state, the second rotating member is rotatable; 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 assembly according to claim 1, characterized in that: The side of the slide groove facing the outer ring wall is inclined toward the direction away from the outer ring wall, and the side of the slide groove facing the outer ring wall is a slope side. The first rotating member and the first elastic member are arranged in sequence 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 assembly according to claim 3, characterized in that: There are multiple slide grooves, and the multiple slide grooves are arranged along the circumference of the track ring. The parts of the multiple slide grooves opposite to the track ring are connected to each other, and the parts of the multiple slide grooves located outside the outer ring wall are spaced apart from each other and have the same shape; the number of the first rotating parts and the first elastic parts is equal to the number of the slide grooves, and the multiple first rotating parts and the multiple first elastic parts are arranged one by one in the parts of the multiple slide grooves located outside the outer ring wall.

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

6. The speed regulating assembly according to claim 5, characterized in that: The first elastic member is in a U-shape or a V-shape with a smoothly transitioned corner.

7. The speed regulating assembly according to claim 5, characterized in that: 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 sliding groove forms a first connecting groove corresponding to the first stress portion.

8. The speed regulating assembly according to claim 1, characterized in that: The sliding seat extends in the radial direction of the track ring, and the follower locking assembly includes: The first stopper is connected to the sliding seat and / or the track ring. The first stopper at least partially covers the notch of the slide groove outside the outer ring wall. The first stopper is used to prevent the first rotating member from leaving the slide groove.

9. A stepless speed regulating mechanism, characterized in that: The stepless speed regulating mechanism comprises: The runner assembly comprises a first runner and a second runner coaxially connected; a driving assembly, configured to drive the wheel assembly to reciprocate along the radial direction of the wheel assembly; and The speed regulation assembly according to any one of claims 1 to 8, wherein there are two speed regulation assemblies, the track rings of the two speed regulation assemblies are coaxially connected to one side of the first rotor and one side of the second rotor, respectively, and the ends of the transmission members of the two speed regulation assemblies away from the sliding seat are both facing in the direction away from the rotor assembly.

10. The stepless speed regulating mechanism according to claim 9, characterized in that: The wheel assembly includes a first limit member and a second limit member, the first limit member and the second limit member are respectively connected to the first wheel and the second wheel, the first limit member and the second limit member respectively face the side of the sliding seat connected to the transmission member in the two speed regulation assemblies, and the first limit member and the second limit member are used to limit the axial movement of the sliding seat along the track ring.

11. A continuously variable transmission, characterized in that: The continuously variable transmission comprises: Speed ​​input wheel; Speed ​​output wheel; The stepless speed regulating mechanism according to claim 9 or 10, wherein the stepless speed regulating mechanism is connected between the speed input wheel and the speed output wheel, the axis of the rotary 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 transmission member of one speed regulating assembly having an end away from the sliding seat being slidably connected to one side of the speed input wheel, and the transmission member of the other speed regulating assembly having an end away from the sliding seat being slidably connected to one side of the speed output wheel; and A support seat assembly, fixedly connecting the speed input wheel, the speed output wheel and the drive assembly of the stepless speed regulation mechanism; When the track ring is eccentric relative to the speed input wheel and the speed output wheel and rotates, only the follower locking assembly with the largest linear speed is in the locking state and is fixed to the track ring, and the remaining follower locking assemblies are in the unlocking 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 of claim 11.

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