Inclined journal stepless speed change method, gearbox and bicycle

Abstract

The invention relates to the technical field of stepless speed change, in particular to an inclined journal stepless speed change method, a gearbox and a bicycle. The inclined journal stepless speed change method comprises the following steps that S1, a speed change mechanism drives a linkage rod to move so that the linkage rod can drive a linkage frame to move along an inclined journal; s2, after the linkage frame body moves, the inclined shaft neck drives the driving point position of the linkage frame body to change, and then the movement stroke of the linkage frame body is changed; s3, the moving stroke of the linkage frame body is changed, so that the output speed of the transmission gear assembly is changed; s4, changing the output rate of the transmission gear assembly to change the output rate of the output gear assembly so as to realize the speed change of the rotating cylinder; according to the inclined journal stepless speed change method, the gearbox and the bicycle, the movement stroke change of the driving component is directly converted into the movement stroke change of the linkage rack, intermediate links in the speed change process are reduced, movement is directly converted through the linkage component and acts on the rotating cylinder through the output gear assembly, and smooth and stable stepless speed change is achieved.

Description

Technical Field

[0001] This invention relates to the field of continuously variable transmission (CVT) technology, specifically to a tilt-jersey CVT method, a gearbox, and a bicycle. Background Technology

[0002] Bicycle shifting systems mostly use drum-type shifting mechanisms. Although technological advancements have brought the experience close to continuously variable transmissions (CVTs), the actual number of gears remains fixed at a few levels. This makes it impossible to achieve a linear and smooth shifting experience on complex roads or in special sporting scenarios. The design, manufacturing, and maintenance of traditional CVTs are technically and costly, and important performance indicators such as torque, speed, and transmission efficiency are severely limited.

[0003] Chinese invention patent 201410304320.6 discloses a continuously variable transmission device for a crankshaft with an inclined axis. The crankshaft has an inclined center sleeve in its middle section, which is connected to a connecting rod via a bearing. A speed regulating rod is provided within the range of motion of the connecting rod, and is housed in a housing via a slider and a slide bar. At the other end of the connecting rod, a gear plate is connected via a connecting pin and a U-shaped connecting seat. Racks are mounted on both sides of the gear plate, and each rack has a unidirectional tooth. The unidirectional tooth is connected to an output gear via a connecting shaft. The driven output gear, which meshes with the driving output gear, is connected to the output shaft. This technology first converts the rotary motion at the input end into linear motion with an adjustable reciprocating stroke, and then converts the reciprocating linear motion back into rotary motion, achieving continuously variable transmission at the output end.

[0004] However, while the above-mentioned scheme discloses a design without speed change, its operational stability is relatively poor. Between the connecting rod and the rack, there is still a connecting rod pin with a high degree of freedom. The connecting rod pin and joint are responsible for converting rotational motion into linear motion. In the action of the inclined crankshaft driving the connecting rod, some of the force is applied to the gear plate instead of directly to the rack, which not only causes power loss but also further damages the stability and lifespan of the gear plate's reciprocating motion. Overall, the above-mentioned scheme has problems with power loss and poor stability, and there is still considerable room for improvement.

[0005] Therefore, there is an urgent need to provide a solution to overcome the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a tilting journal continuously variable transmission method, a gearbox, and a bicycle, which directly converts the change in the motion stroke of the drive component into the change in the motion stroke of the linkage rack, reduces intermediate links in the speed change process, and achieves smooth and stable continuously variable transmission by acting on the rotating cylinder through the output gear assembly.

[0007] To achieve the above objectives, the present invention provides the following technical solution; A continuously variable transmission (CVT) method with an inclined journal includes a rotating housing, the rotating housing comprising fixed side plates and a rotating cylinder, the rotating cylinder being rotatably mounted on a set of fixed side plates; a transmission mechanism, a linkage component, a drive component, a transmission gear assembly, and an output gear assembly are further disposed in the mounting cavity formed by the fixed side plates and the rotating housing; the drive component includes an inclined journal. The linkage component includes a linkage frame, on which a linkage rack and a linkage rod are fixedly mounted, the linkage rack and linkage rod being arranged in parallel; the speed change mechanism is driven to the linkage rod; the linkage rack is driven to the transmission gear assembly, the transmission gear assembly is driven to the output gear assembly, and the output gear set is driven to the rotating cylinder; the inclined journal is driven to the linkage frame, and the linkage frame is slidably mounted on the speed change mechanism; the steps are as follows: S1. The speed change mechanism drives the linkage rod to move, so that the linkage rod drives the linkage frame to move along the inclined journal; S2. After the linkage frame moves, the driving point of the inclined journal driving the linkage frame changes, thereby changing the stroke of the inclined journal driving the linkage frame; S3. The change in the stroke of the linkage frame per unit time changes the output speed of the linkage rack drive transmission gear assembly; S4. The change in the output speed of the transmission gear assembly changes the output speed of the output gear assembly, thereby changing the rotation speed of the rotating cylinder at the fixed side plate, so as to realize the speed change of the rotating cylinder; The diameter of the circular motion at different positions of the inclined journal is different. When speed change is required, the speed change mechanism can drive the linkage rod to move the linkage frame back and forth along the inclined journal and can stop at any position of the inclined journal. The stroke of the inclined journal driving the linkage rack to move increases or decreases, so as to increase or decrease the rotation speed of the rotating cylinder, thereby realizing stepless speed change.

[0008] Furthermore, the driving component also includes a driving gear disk, one end of the inclined journal is connected to a connector, and the other end of the inclined journal is rotatably connected to the rotating housing via a rotating bearing. The driving gear disk and the connector are concentrically installed, and the driving gear disk is located outside the mounting cavity. During operation, the drive gear disk drives the connecting piece, which in turn drives the inclined journal to rotate. The inclined journal drives the linkage frame and linkage rack to move, so that the linkage rack drives the transmission gear assembly to rotate, and the transmission gear assembly drives the output gear assembly to rotate.

[0009] Furthermore, the connector 21, the inclined journal 22, and the rotating bearing 23 are integrally formed structures.

[0010] Furthermore, the rotating housing also includes a rotating bushing and a rotating gear ring; the rotating cylinder is rotatably mounted on a set of fixed side plates using the rotating bushing; the inner wall of the rotating bushing is provided with a rotating gear ring; the rotating gear ring is drivenly connected to the output gear assembly.

[0011] Furthermore, the linkage frame is provided with a sliding groove, and the inclined journal passes through the sliding groove, making sliding contact with the inner wall of the sliding groove. During speed change, the speed change mechanism drives the linkage rod and the linkage frame to move, thereby changing the sliding contact position between the linkage frame and the inclined journal. When the linkage frame is in different positions of the inclined journal, the diameter of the circular motion of the inclined journal is also different, thus the inclined journal drives the linkage frame and the linkage rack to obtain different motion amplitudes, thereby realizing the speed change driven by the linkage rack.

[0012] Furthermore, the sliding groove is a straight strip groove, and the extending direction of the sliding groove is perpendicular to the extending direction of the linkage rack.

[0013] Furthermore, the transmission gear assembly includes a first rotating shaft and a second rotating shaft rotatably mounted on the fixed side plate. A first gear and a first ratchet mechanism are coaxially mounted on the first rotating shaft, and a second gear and a second ratchet mechanism are coaxially mounted on the second rotating shaft. The central axes of the first rotating shaft and the second rotating shaft are both parallel to the central axis of the connecting member. The first gear and the second gear are always meshed with the linkage rack. The ratchet of the first ratchet mechanism and the ratchet of the second ratchet mechanism are always meshed with the output gear assembly.

[0014] Furthermore, the speed change mechanism includes a speed change drive component, a lead screw mechanism, and a speed change adjustment block; the lead screw carriage is mounted between a set of fixed side plates; the speed change drive component is drivenly connected to the lead screw mechanism, and the lead screw mechanism is drivenly connected to the speed change adjustment block; the linkage rod is slidably mounted on the speed change adjustment block; the sliding direction of the linkage rod is perpendicular to the direction in which the speed change adjustment block drives the linkage rod to move; during speed change, the speed change drive component drives the lead screw of the lead screw mechanism to rotate, the lead screw drives the lead screw nut to move the speed change adjustment block, and the speed change adjustment block drives the linkage rod to move to change the driving point position between the linkage frame and the drive component, thereby changing the travel of the linkage rack. The change in the travel of the linkage rack realizes the speed change of the transmission gear assembly and the output gear assembly.

[0015] The present invention also provides a tilting journal continuously variable transmission (CVT) for implementing the above-described tilting journal CVT method, comprising a rotating housing, the rotating housing including fixed side plates and a rotating cylinder, the rotating cylinder being rotatably mounted on a set of fixed side plates; a transmission mechanism, a linkage component, a drive component, a transmission gear assembly, and an output gear assembly are further provided in the mounting cavity formed by the fixed side plates and the rotating housing; the drive component includes a tilting journal; The linkage component includes a linkage frame, on which a linkage rack and a linkage rod are fixedly mounted, and the linkage rack and linkage rod are arranged in parallel; the speed change mechanism is driven to the linkage rod; the linkage rack is driven to the transmission gear assembly, the transmission gear assembly is driven to the output gear assembly, and the output gear assembly is driven to the rotating cylinder; the inclined journal is driven to the linkage frame, and the linkage frame is slidably mounted on the speed change mechanism.

[0016] The present invention also provides a tilt-axis continuously variable transmission (CVT) bicycle, which includes the aforementioned tilt-axis CVT, wherein the fixed side plate is mounted on the frame and the rotating cylinder is rotatably mounted on the fixed side plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This tilting journal continuously variable transmission method features a simplified overall structure with I-shaped linkage components, reducing the number of parts, lowering installation and production costs, and improving assembly and maintenance efficiency. During speed change, the transmission mechanism drives the linkage rod to move, which in turn drives the linkage frame to directly acquire the motion stroke at different positions on the drive component. The linkage frame then directly drives the linkage rack, directly converting the change in the motion stroke of the drive component into a change in the motion stroke of the linkage rack. This reduces intermediate links in the speed change process, directly converting motion through the linkage components, reducing power loss, and acting on the rotating cylinder through the output gear assembly to achieve smooth and stable continuously variable transmission. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is an exploded view of the overall structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the hidden portion of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the driving component of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the invention, which conceals the rotating housing and the gear shifting mechanism.

[0022] Figure 6 This is a schematic diagram of the hidden rotating box structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the installation of the present invention.

[0024] Figure 8 This is a schematic diagram of the installation from another perspective of the present invention.

[0025] Figure 9This is a schematic diagram of the installation from another perspective of the present invention. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] refer to Figure 1-9 As shown, the present invention provides a method for continuously variable transmission with tilting journals, including a rotating housing 1. The rotating housing 1 includes fixed side plates 12 and a rotating cylinder 11. The rotating cylinder 11 is rotatably mounted on a set of fixed side plates 12. The mounting cavity formed by the fixed side plates 12 and the rotating housing 1 is further provided with a transmission mechanism 6, a linkage component 5, a drive component 2, a transmission gear assembly 3, and an output gear assembly 4. The drive component 2 includes a tilting journal 22. The linkage component 5 includes a linkage frame 51, on which a linkage rack 52 and a linkage rod 53 are fixedly mounted, and the linkage rack 52 and linkage rod 53 are arranged in parallel; the speed change mechanism 6 is drivenly connected to the linkage rod 53; the linkage rack 52 is drivenly connected to the transmission gear assembly 3, the transmission gear assembly 3 is drivenly connected to the output gear assembly 4, and the output gear assembly 4 is drivenly connected to the rotating cylinder 11; the inclined journal 22 is drivenly connected to the linkage frame 51, and the linkage frame 51 is slidably mounted on the speed change mechanism 6; the steps are as follows: S1. The speed change mechanism 6 drives the linkage rod 53 to move, so that the linkage rod 53 drives the linkage frame 51 to move along the inclined journal 22. S2. After the linkage frame 51 moves, the tilting journal 22 drives the linkage frame 51 to change the driving point, thereby changing the stroke of the linkage frame 51 driven by the tilting journal 22. S3. The change in the travel distance of the linkage frame 51 per unit time causes the speed output of the linkage rack 52 driving the transmission gear assembly 3 to change. S4. The change in the output speed of the transmission gear assembly 3 causes the output speed of the output gear assembly 4 to change, thereby changing the rotation speed of the rotating cylinder 11 at the fixed side plate 12, so as to realize the speed change of the rotating cylinder 11. The diameter of the circular motion of the inclined journal 22 varies at different driving points. When speed change is required, the speed change mechanism 6 can drive the linkage rod 53 to move the linkage frame 51 back and forth along the inclined journal 22 and stop at any position of the inclined journal 22. The stroke of the inclined journal 22 driving the linkage rack 52 can be increased or shortened, so as to increase or decrease the rotation speed of the rotating cylinder 11, thereby realizing stepless speed change.

[0028] Specifically, the rotating cylinder 11 is the final output component. The integrated "I"-shaped structure of the linkage frame 51, linkage rack 52, and linkage rod 53 allows the transmission mechanism 6 to directly drive the linkage rod 53 onto the linkage frame 51, and also allows the drive component 2 to directly drive the linkage frame 51 onto the linkage rack 52, reducing intermediate links and lowering power loss. The transmission mechanism 6 directly adjusts the travel of the linkage rack 52 to achieve stepless speed change of the output gear assembly 4. The different drives of the inclined journal 22... The different diameters of the circular motion at the points result in different amplitudes of motion for the linkage frame 51 and the linkage rack 52. Furthermore, the faster the speed at which the speed change mechanism 6 drives the linkage rack 52, the shorter the speed change time of the output gear assembly 4, and the faster the speed change process. Conversely, the slower the speed at which the speed change mechanism 6 drives the linkage rack 52, the longer the speed change time of the output gear assembly 4, and the slower the speed change process. The change in the speed of the output gear assembly 4 causes a change in the rotation speed of the rotating cylinder 11.

[0029] This tilting journal continuously variable transmission method features a simplified overall structure. The I-shaped linkage component 5 reduces the number of parts, lowers installation and production costs, and improves assembly and maintenance efficiency. During speed change, the transmission mechanism 6 drives the linkage rod 53 to move, which in turn drives the linkage frame 51 to directly acquire the motion stroke of the drive component 2 at different positions. The linkage frame 51 then directly drives the linkage rack 52, directly converting the change in the motion stroke of the drive component 2 into a change in the motion stroke of the linkage rack 52. This reduces intermediate links in the speed change process, directly converting motion through the linkage component 5, reducing power loss, and acting on the rotating cylinder through the output gear assembly to achieve smooth and stable continuously variable transmission.

[0030] In practical applications, this tilted journal continuously variable transmission method directly integrates the entire transmission system into the gearbox housing, and then outputs power to the rotatable gearbox housing. There is no need to add a transmission system outside the power system, which not only reduces weight and volume, but also creates a well-defined and standardized power system with clear boundaries and interfaces, making it possible to miniaturize and integrate the power system and transmission system. During the transmission process, the tilted journal 22 with its tilted design generates continuously changing angular velocities. These angular velocities are transmitted to the output gear assembly 4 through the linkage rack 52, thus forming a smooth continuously variable transmission with a continuous ratio.

[0031] In this embodiment, the driving component 2 further includes a driving gear disk 24, one end of the inclined journal 22 is connected to a connector 21, and the other end of the inclined journal 22 is rotatably connected to the rotating housing 1 by a rotating bearing 23. The driving gear disk 24 and the connector 21 are installed concentrically, and the driving gear disk 24 is located outside the mounting cavity. During operation, the drive gear 24 drives the connecting piece 21, which in turn drives the inclined journal 22 to move in a circular motion. The inclined journal 22 drives the linkage frame 51 and the linkage rack 52 to move, so that the linkage rack 52 drives the transmission gear assembly 3 to rotate, and the transmission gear assembly 3 drives the output gear assembly 4 to rotate.

[0032] Specifically, the drive sprocket 24 can be connected to a drive belt or drive chain to adapt to the application scenarios of bicycles; the rotation output of the drive sprocket 24 drives the connector 21 to drive the tilting journal 22 to rotate, and the tilting journal 22 directly transmits the rotation to the linkage rack 52 through the linkage frame 51, reducing intermediate parts and links, improving power transmission efficiency, and realizing fast and stable power output.

[0033] In this embodiment, the connector 21, the inclined journal 22, and the rotating bearing 23 are integrally formed structures. Specifically, the integral forming process can be selected from, but is not limited to, casting, 3D printing, machining, etc.; the integrally formed structure can maximize the output torque of the power, and the upper limit of the output torque is limited by the strength and deflection of the material and structure of the inclined journal 22 itself; at the same time, it also reduces the difficulty and cost of design, production and integration, and maintenance.

[0034] In this embodiment, the rotating housing 1 further includes a rotating bushing 14 and a rotating gear ring 13; the rotating cylinder 11 is rotatably mounted on a set of fixed side plates 12 using the rotating bushing 14; the inner wall of the rotating bushing 14 is provided with a rotating gear ring 13; the rotating gear ring 13 is drivenly connected to the output gear assembly 4.

[0035] Specifically, the rotating housing 11 is the output end, and different types of wheels can be installed as needed. When working, the transmission gear assembly 3 drives the output gear assembly 4, which in turn drives the rotating gear ring 13 to drive the rotating cylinder 11, thereby driving the wheels to rotate.

[0036] Specifically, the output gear assembly 4 includes an output meshing tooth 41 and an output power tooth 42; the output meshing tooth 41 and the output power tooth 42 are concentrically arranged, the output meshing tooth 41 meshes with the transmission gear assembly 3, and the output power tooth 42 meshes with the rotating gear ring 13.

[0037] In this embodiment, the linkage frame 51 is provided with a sliding groove 511, the inclined journal 22 passes through the sliding groove 511, and the inclined journal 22 slides in contact with the inner wall of the sliding groove 511. During speed change, the speed change mechanism 6 drives the linkage rod 53 and the linkage frame 51 to move, so that the linkage frame 51 moves to change the driving point of the linkage frame 51 and the inclined journal 22. When the linkage frame 51 is in different positions of the inclined journal 22, the diameter of the circular motion of the inclined journal 22 is also different. As a result, the inclined journal 22 drives the linkage frame 51 and the linkage rack 52 to obtain different motion amplitudes, thereby realizing the speed change driven by the linkage rack 52. Specifically, the inclined journal 22 and the sliding groove 511 can be slidably connected by a ball joint bearing, so that the inclined journal 22 can smoothly revolve while sliding in the sliding groove 511. During operation, the inclined journal 22 is driven to rotate by the connecting piece 21, so that the rotation circles drawn by different points of the inclined journal 22 with the inclined angle have different diameters during the rotation, thus resulting in differences in the movement amplitude and stroke at different points. Under the drive of the transmission mechanism 6, the linkage rack 52 is directly moved, thereby changing the drive point of the linkage frame 51 and the inclined journal 22, so that the linkage rack 52 can directly obtain the movement stroke of the inclined journal 22 at different drive points by following the linkage frame 51. The overall transmission process reduces unnecessary power splitting, directly obtains different drive strokes, reduces power waste and loss, and achieves stable and smooth transmission action.

[0038] In this embodiment, the linkage frame 51 is provided with a sliding groove 511, the inclined journal 22 passes through the sliding groove 511, and the inclined journal 22 slides in contact with the linkage frame 51 within the sliding groove 511.

[0039] In this embodiment, the sliding groove 511 is a straight strip groove, and the extending direction of the sliding groove 511 is perpendicular to the extending direction of the linkage rack 52.

[0040] Specifically, the vertical, straight sliding groove 511 can directly resolve the vertical component of the force in the revolution of the inclined journal 22. Only the vertical component of the revolution is needed to overcome the sliding friction of the bearing. This friction is negligible, thus avoiding the waste of power in the vertical direction of the inclined journal 22. This maximizes the output of power torque to the horizontal component to drive the linkage rod 51 to move left and right, thereby driving the linkage rack 52. Overall, this reduces the torque power direction of the output mechanism 7, achieving energy saving and consumption reduction, reducing equipment wear, and improving speed regulation and transmission efficiency.

[0041] In this embodiment, the transmission gear assembly 3 further includes a first rotating shaft 31 and a second rotating shaft 32 rotatably disposed on the fixed side plate 12. A first gear 33 and a first ratchet mechanism 34 are coaxially disposed on the first rotating shaft 31, and a second gear 35 and a second ratchet mechanism 36 are coaxially disposed on the second rotating shaft 32. The central axis of the first rotating shaft 31 and the central axis of the second rotating shaft 32 are both parallel to the central axis of the connecting member 21. The first gear 33 and the second gear 35 are always meshed with the linkage rack 521. The transmission direction of the first ratchet mechanism 34 and the transmission direction of the second ratchet mechanism 36 are opposite, and the ratchet of the first ratchet mechanism 34 and the ratchet of the second ratchet mechanism 36 are always meshed with the output gear assembly 4.

[0042] Specifically, the transmission gear assembly 3 is configured as a dual-group type. In bicycle application scenarios, the transmission direction of the first ratchet mechanism 34 and the transmission direction of the second ratchet mechanism 36 can be set as needed, and power backup can be performed. This enables the dual ratchets to drive the output gear assembly 4 simultaneously, thereby increasing the output torque of the gearbox and providing power backup redundancy, which further enhances the operational stability of the gearbox.

[0043] In this embodiment, the speed change mechanism 6 includes a speed change drive 61, a lead screw mechanism 63, and a speed change adjustment block 62; the lead screw carriage 63 is mounted between a set of fixed side plates 12; the speed change drive 61 is driven to the lead screw mechanism 63, and the lead screw mechanism 63 is driven to the speed change adjustment block 62; the linkage rod 53 is installed on the speed change adjustment block 62; during operation, the tilting journal 22 drives the linkage frame 51 to move, thereby causing the linkage rod 53 to reciprocate within the speed change adjustment block 62; The sliding direction of the linkage rod 53 is perpendicular to the direction in which the speed adjustment block 62 drives the linkage rod 53 to move. During speed change, the speed drive component 61 drives the lead screw of the lead screw mechanism 63 to rotate. The lead screw drives the lead screw nut to move the speed adjustment block 62. The speed adjustment block 62 drives the linkage rod 53 to move to change the driving point position between the linkage frame 51 and the drive component 2, thereby changing the travel of the linkage rack 52. The change in the travel of the linkage rack 52 realizes the speed change of the transmission gear assembly 3 and the output gear assembly 4.

[0044] Specifically, during operation, the linkage 53 is installed within the gear shift adjustment block 62. The linkage 53 only slides horizontally within the gear shift adjustment block 62. During the sliding process, the gear shift adjustment block 62 restricts the excessive displacement of the linkage rack 52, retaining only horizontal sliding. Furthermore, during gear shifting, the gear shift adjustment block 62 directly drives the linkage 53 to move, with the moving direction perpendicular to the sliding direction. Throughout the overall gear shifting process, the movement of the gear shift directly acts on the linkage frame 51, improving the overall smoothness of gear shifting, reducing power loss during operation and gear shifting, and enhancing the stability of the gearbox operation.

[0045] The present invention also provides a tilting journal continuously variable transmission (CVT) for implementing the above-described tilting journal CVT method, comprising a rotating housing 1, the rotating housing 1 including fixed side plates 12 and a rotating cylinder 11, the rotating cylinder 11 being rotatably mounted on a set of fixed side plates 12; a transmission mechanism 6, a linkage component 5, a drive component 2, a transmission gear assembly 3, and an output gear assembly 4 are further provided in the mounting cavity formed by the fixed side plates 12 and the rotating housing 1; the drive component 2 includes a tilting journal 22; The linkage component 5 includes a linkage frame 51, on which a linkage rack 52 and a linkage rod 53 are fixedly mounted, and the linkage rack 52 and linkage rod 53 are arranged in parallel; the speed change mechanism 6 is driven to the linkage rod 53; the linkage rack 52 is driven to the transmission gear assembly 3, the transmission gear assembly 3 is driven to the output gear assembly 4, and the output gear assembly 4 is driven to the rotating cylinder 11; the inclined journal 22 is driven to the linkage frame 51, and the linkage frame 51 is slidably mounted on the speed change mechanism 6.

[0046] The present invention also provides a tilt-axis continuously variable transmission (CVT) bicycle, which includes the aforementioned tilt-axis CVT, wherein the fixed side plate 12 is mounted on the frame 8, and the rotating cylinder 11 is rotatably mounted on the fixed side plate 12.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined by the spirit of the invention.

Claims

1. A method for continuously variable transmission with tilting journals, characterized in that, The device includes a rotating housing (1), which includes a fixed side plate (12) and a rotating cylinder (11). The rotating cylinder (11) is rotatably mounted on a set of fixed side plates (12). The mounting cavity formed by the fixed side plates (12) and the rotating housing (1) is also provided with a speed change mechanism (6), a linkage component (5), a drive component (2), a transmission gear assembly (3), and an output gear assembly (4). The drive component (2) includes an inclined journal (22). The linkage component (5) includes a linkage frame (51), on which a linkage rack (52) and a linkage rod (53) are fixedly mounted, and the linkage rack (52) and the linkage rod (53) are arranged in parallel; the speed change mechanism (6) is driven to the linkage rod (53); the linkage rack (52) is driven to the transmission gear assembly (3), the transmission gear assembly (3) is driven to the output gear assembly (4), and the output gear assembly (4) is driven to the rotating cylinder (11); the inclined journal (22) is driven to the linkage frame (51), and the linkage frame (51) is slidably mounted on the speed change mechanism (6); the steps are as follows: S1. The speed change mechanism (6) drives the linkage rod (53) to move, so that the linkage rod (53) drives the linkage frame (51) to move along the inclined journal (22); S2. After the linkage frame (51) moves, the driving point of the inclined journal (22) driving the linkage frame (51) changes, thereby changing the stroke of the inclined journal (22) driving the linkage frame (51). S3. The change in the travel distance of the linkage frame (51) per unit time causes the speed of the linkage rack (52) driving the transmission gear assembly (3) to change. S4. The change in the output rate of the transmission gear assembly (3) causes the output rate of the output gear assembly (4) to change, thereby changing the rotational speed of the rotating cylinder (11) at the fixed side plate (12) to achieve speed change of the rotating cylinder (11). The diameter of the circular motion of the inclined journal (22) varies at different driving points. When speed change is required, the speed change mechanism (6) can drive the linkage rod (53) to move the linkage frame (51) back and forth along the inclined journal (22) and can stop at any position of the inclined journal (22). The stroke of the inclined journal (22) driving the linkage rack (52) to move increases or decreases, so as to increase or decrease the rotation speed of the rotating cylinder (11), thereby realizing stepless speed change.

2. The continuously variable transmission method for tilting journals according to claim 1, characterized in that, The driving component (2) also includes a driving gear disk (24). One end of the inclined journal (22) is connected to a connector (21). The other end of the inclined journal (22) is rotatably connected to the rotating housing (1) by a rotating bearing (23). The driving gear disk (24) and the connector (21) are installed concentrically, and the driving gear disk (24) is located outside the mounting cavity. During operation, the drive gear plate (24) drives the connecting piece (21) to drive the inclined journal (22) to rotate. The inclined journal (22) drives the linkage frame (51) and the linkage rack (52) to move, so that the linkage rack (52) drives the transmission gear assembly (3) to rotate. The transmission gear assembly (3) drives the output gear assembly (4) to rotate.

3. The continuously variable transmission method for tilting journals according to claim 2, characterized in that, The connector (21), the inclined journal (22), and the rotating bearing (23) are integrally formed.

4. The continuously variable transmission method for tilting journals according to claim 1, characterized in that, The rotating housing (1) also includes a rotating bushing (14) and a rotating gear ring (13); the rotating cylinder (11) is rotatably mounted on a set of fixed side plates (12) using the rotating bushing (14); the inner wall of the rotating bushing (14) is provided with a rotating gear ring (13); the rotating gear ring (13) is drivenly connected to the output gear assembly (4).

5. The method for continuously variable transmission with tilting journals according to claim 1, characterized in that, The linkage frame (51) has a sliding groove (511), the inclined journal (22) passes through the sliding groove (511), and the inclined journal (22) slides in contact with the inner wall of the sliding groove (511). During speed change, the speed change mechanism (6) drives the linkage rod (53) and the linkage frame (51) to move, so that the linkage frame (51) moves to change the driving point of the linkage frame (51) and the tilting journal (22). When the linkage frame (51) is at different driving points of the tilting journal (22), the diameter of the circumferential motion of the tilting journal (22) is also different. As a result, the tilting journal (22) drives the linkage frame (51) and the linkage rack (52) to obtain different motion amplitudes, thereby realizing the speed change driven by the linkage rack (52).

6. The continuously variable transmission method for tilting journals according to claim 5, characterized in that, The sliding groove (511) is a straight strip groove, and the extension direction of the sliding groove (511) is perpendicular to the extension direction of the linkage rack (52).

7. The continuously variable transmission method for tilting journals according to claim 1, characterized in that, The transmission gear assembly (3) includes a first rotating shaft (31) and a second rotating shaft (32) rotatably mounted on the fixed side plate (12). A first gear (33) and a first ratchet mechanism (34) are coaxially mounted on the first rotating shaft (31), and a second gear (35) and a second ratchet mechanism (36) are coaxially mounted on the second rotating shaft (32). The central axis of the first rotating shaft (31) and the central axis of the second rotating shaft (32) are both parallel to the central axis of the connecting member (21). The first gear (33) and the second gear (35) are always engaged with the linkage rack (52); the ratchet of the first ratchet mechanism (34) and the ratchet of the second ratchet mechanism (36) are always engaged with the output gear assembly (4).

8. The continuously variable transmission method for tilting journals according to claim 1, characterized in that, The speed change mechanism (6) includes a speed change drive component (61), a lead screw mechanism (63), and a speed change adjustment block (62); the lead screw carriage (63) is mounted between a set of fixed side plates (12); the speed change drive component (61) is driven to the lead screw mechanism (63), and the lead screw mechanism (63) is driven to the speed change adjustment block (62); the linkage rod (53) is slidably mounted on the speed change adjustment block (62); the sliding direction of the linkage rod (53) is perpendicular to the direction in which the speed change adjustment block (62) drives the linkage rod (53) to move; During speed change, the speed change drive (61) drives the lead screw of the lead screw mechanism (63) to rotate, and the lead screw drives the lead screw nut to move the speed change adjustment block (62). The speed change adjustment block (62) drives the linkage rod (53) to move to change the driving point position of the linkage frame (51) and the drive component (2), thereby changing the travel of the linkage rack (52). The change in the travel of the linkage rack (52) realizes the speed change of the transmission gear assembly (3) and the output gear assembly (4).

9. A tilting journal continuously variable transmission, characterized in that, The method for implementing the tilting journal continuously variable transmission method according to any one of claims 1-9 includes a rotating housing (1), the rotating housing (1) including a fixed side plate (12) and a rotating cylinder (11), the rotating cylinder (11) being rotatably mounted on a set of fixed side plates (12); a transmission mechanism (6), a linkage component (5), a drive component (2), a transmission gear assembly (3) and an output gear assembly (4) are also provided in the mounting cavity formed by the fixed side plate (12) and the rotating housing (1); the drive component (2) includes a tilting journal (22). The linkage component (5) includes a linkage frame (51), on which a linkage rack (52) and a linkage rod (53) are fixedly mounted, and the linkage rack (52) and the linkage rod (53) are arranged in parallel; the speed change mechanism (6) is driven to the linkage rod (53); the linkage rack (52) is driven to the transmission gear assembly (3), the transmission gear assembly (3) is driven to the output gear assembly (4), and the output gear assembly (4) is driven to the rotating cylinder (11); the inclined journal (22) is driven to the linkage frame (51), and the linkage frame (51) is slidably mounted on the speed change mechanism (6).

10. A tilt-axis continuously variable transmission (CVT) bicycle, characterized in that, The bicycle includes the tilt-axis continuously variable transmission as described in claim 9, the fixed side plate (12) is mounted on the frame (8), and the rotating cylinder (11) is rotatably mounted on the fixed side plate (12).

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