Pulse type stepless speed change device

Abstract

The pulsating type stepless speed change device comprises a main shaft, an outer ring a, a mounting seat, an inner gear, a fixing plate a, a fixing plate b, an output ratchet wheel, a fluted disc a, a fluted disc b and an outer ring b are sequentially mounted on the main shaft, a chain wheel is arranged on the surface of the mounting seat, a tooth groove a formed in the inner side of the inner gear is meshed with the gear a, and a speed regulating mechanism is arranged on the gear a. The output end of the speed regulating mechanism is meshed with the output ratchet wheel, the fluted disc a is fixedly installed on the side face of the output ratchet wheel, the fluted disc b is meshed with the fluted disc a and installed on the side face of the shell a, and the other side of the shell a is connected with the shell b. Compared with an existing transmission mode of changing the friction radius with a ball body, the device adopts gear meshing transmission, slipping is avoided, the transmission efficiency is improved, meanwhile, the structure is simple, the manufacturing cost is low, and an existing bicycle transmission on the market can be directly replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of continuously variable transmission, and particularly to a pulsating continuously variable transmission device. Background Art

[0002] With the continuous iteration of transmissions, the CVT continuously variable transmission stands out in the civilian vehicle market with its excellent fuel economy and ride comfort, gradually replacing the original stepped transmissions, and is often configured on small-displacement cars, scooter motorcycles, and some high-end bicycles.

[0003] On bicycles, there are mainly stepped transmissions of sprocket discs of brands such as Shimano or their derivatives. A small number of bicycles are equipped with NuVinci continuously variable planetary transmission devices. It transmits the speed between the driving wheel disc and the driven wheel disc through a group of balls. The center of the frame fixing this group of balls can move left and right, so that the axes of the balls form an angle, and thus the balls at the left and right contact points have different rotation circumferences, forming a speed ratio. The angle control of this group of balls is stepless, thus realizing the overall continuously variable transmission. However, the main principle of this device is to transmit through changing the friction radius with the spheres, which is prone to slipping, has low transmission efficiency, and has a relatively high manufacturing cost, making it difficult to popularize, and is often arranged on products such as high-end bicycles. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a pulsating continuously variable transmission device.

[0005] The purpose of the present invention is achieved through the following technical solutions: A pulsating continuously variable transmission device includes a main shaft, on which an outer ring a, a mounting seat, an internal gear, a fixing plate a, a fixing plate b, an output ratchet, a gear disc a, a gear disc b, and an outer ring b are sequentially installed. A sprocket is arranged on the surface of the mounting seat. The tooth groove a opened on the inner side of the internal gear meshes with a gear a. The side of the gear a is installed on a rotating body, and a speed regulating mechanism is arranged inside the rotating body. The output end of the speed regulating mechanism meshes with the output ratchet. The gear disc a is fixedly installed on the side of the output ratchet, and the gear disc b meshes with the gear disc a. The gear disc b is installed on the side of a housing a, and the other side of the housing a is connected to a housing b.

[0006] Preferably, the mounting seat includes an inner ring and an outer ring. The inner ring is installed on the main shaft. One end of the outer surface of the inner ring is provided with a threaded section, and the inner surface of the outer ring is provided with a corresponding threaded section. A limiting groove is opened on the outer surface of the outer ring. Protrusions are arranged on the inner sides of both the sprocket and the internal gear, and the protrusions are located in the limiting groove.

[0007] Preferably, the speed regulating mechanism includes bevel gear a. Bearing mounting holes are correspondingly provided on fixed plate a and fixed plate b. A rotating body is mounted in the bearing mounting holes through bearings. Bevel gear a is located inside the rotating body. Bevel gear a meshes with bevel gear b. A speed regulating screw is provided on one side of bevel gear b. A slider is helically mounted on the speed regulating screw. A receiving cavity a and a receiving cavity b are provided on the rotating body. Bevel gear b is located inside receiving cavity a. The speed regulating screw is located inside receiving cavity b. And a chute is provided at the upper end of receiving cavity b. Both sides of the upper end of the slider are located inside the chute. A connecting rod is mounted on the slider. An output mechanism is mounted on the connecting rod.

[0008] Preferably, the output mechanism includes force arm a and force arm b. Force arm a and force arm b are distributed vertically and are rotatably mounted on the surface of the connecting rod. Circular holes are provided at the ends of force arm a and force arm b. A return spring is provided inside the circular holes. The return spring is sleeved outside rotating shaft a and rotating shaft b. Bearings are mounted at both ends of rotating shaft a and rotating shaft b. And semi-helical teeth are provided at the upper ends of rotating shaft a and rotating shaft b. The semi-helical teeth mesh with tooth groove c on the output ratchet wheel.

[0009] Preferably, an arc groove a is provided on the surface of fixed plate b. An arc groove b is provided on the output ratchet wheel. Tooth groove c is located inside arc groove b. The upper bearing is located inside arc groove b. The lower bearing is located inside arc groove a.

[0010] Preferably, a rotating shaft c penetrates through the outer ends of the sides of fixed plate b and fixed plate a. Bearings b are provided at both ends of rotating shaft c. Bearings b are in contact with the inner surfaces of outer shell a and outer shell b.

[0011] Preferably, a clutch finger dial is provided on outer ring b. One end of outer ring b abuts against gear disk a. A limiting plate is provided at the other end of outer ring b. The limiting plate is fixedly mounted on the main shaft.

[0012] Preferably, a stepped hole is provided on the output ratchet wheel. A slider b corresponding to the stepped hole is provided on the side surface of gear disk a.

[0013] Preferably, a handle finger dial is provided on outer ring a. A bushing is movably mounted on the main shaft. A moving plate is provided at one end of the bushing. A convex block b is provided on the other side of the moving plate. A convex block c corresponding to convex block b is provided on the side surface of bevel gear a.

[0014] Preferably, a number of mounting holes are provided on the outer sides of outer shell a and outer shell b.

[0015] The present invention has the following advantages: By stepping on the pedal by the rider, the power is input into the mounting seat through the sprocket, and then transmitted to the internal gear. The internal gear meshes with gear a to make the speed regulating mechanism rotate. During the rotation, its output end drives the output ratchet to rotate. Finally, through the cooperation of gear disc a and gear disc b, the outer shell a and the outer shell b are driven to rotate, and then the wheel rotates. This device drives through gear meshing. Compared with the existing transmission method of changing the friction radius with the sphere, it avoids slipping, improves the transmission efficiency, and at the same time has a simple structure and low cost, and can directly replace the existing bicycle transmissions on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the outside of the pulsating stepless speed change device;

[0017] Figure 2 It is a schematic structural diagram of the positional relationship of the outer ring a, the mounting seat, the internal gear, the fixing plate a, the fixing plate b, the output ratchet, the gear disc a, the gear disc b and the outer ring b on the main shaft;

[0018] Figure 3 It is a schematic structural diagram of the output mechanism;

[0019] Figure 4 It is a schematic structural diagram of the rotating body;

[0020] Figure 5 It is a schematic structural diagram of the speed regulating mechanism;

[0021] Figure 6 It is a schematic structural diagram of the output ratchet;

[0022] Figure 7 It is a schematic structural diagram of the positional relationship of the outer ring a, the shaft sleeve and the moving plate;

[0023] Figure 8 It is a schematic structural diagram of the power output curve;

[0024] In the figure, 1 - main shaft, 2 - outer shell b, 3 - outer shell a, 4 - outer ring a, 5 - outer ring b, 6 - clutch shifter, 7 - mounting seat, 8 - sprocket, 9 - internal gear, 10 - fixing plate a, 11 - fixing plate b, 12 - output ratchet, 13 - gear disc a, 14 - gear disc b, 15 - arc groove a, 16 - bearing b, 17 - rotating shaft a, 18 - semi - helical tooth, 19 - force arm b, 20 - force arm a, 21 - connecting rod, 23 - tooth groove a, 24 - gear a, 25 - bevel gear a, 26 - bevel gear b, 27 - speed regulating screw, 28 - slider, 29 - rotating body, 30 - chute, 31 - accommodating cavity b, 33 - tooth groove c, 34 - shaft sleeve, 35 - moving plate, 36 - bump b, 37 - bump c. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0027] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0028] It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In this embodiment, as Figure 1 and Figure 2As shown in the figure, a pulsating stepless transmission device includes a main shaft 1. An outer ring a4, a mounting seat 7, an internal gear 9, a fixing plate a10, a fixing plate b11, an output ratchet 12, a tooth disc a13, a tooth disc b14, and an outer ring b5 are sequentially installed on the main shaft 1. A sprocket 8 is arranged on the surface of the mounting seat 7. Further, the mounting seat 7 includes an inner ring and an outer ring. The inner ring is installed on the main shaft 1. One end of the outer surface of the inner ring is provided with a threaded section, and the inner surface of the outer ring is provided with a corresponding threaded section. A limiting groove is opened on the outer surface of the outer ring. Protrusions are arranged on the inner sides of both the sprocket 8 and the internal gear 9, and the protrusions are located in the limiting groove. The tooth groove a23 opened on the inner side of the internal gear 9 meshes with a gear a24. The side of the gear a24 is installed on a rotating body 29. A speed regulating mechanism is arranged inside the rotating body 29. The output end of the speed regulating mechanism meshes with the output ratchet 12. The tooth disc a13 is fixedly installed on the side of the output ratchet 12, and the tooth disc b14 meshes with the tooth disc a13. The tooth disc b14 is installed on the side of a housing a3. The other side of the housing a3 is connected to a housing b2. Further, a number of mounting holes are arranged on the outer sides of the housing a3 and the housing b2. Specifically, a number of threaded sections are arranged on the surface of the main shaft 1 for correspondingly installing each component. Both ends of the main shaft 1 are fixedly installed on the rear wheel frame of a bicycle and are locked by nuts to keep non-rotating. The housing a3 and the housing b2 can rotate around the main shaft 1. Spokes are installed in a number of mounting holes arranged on the outer sides of the housing a3 and the housing b2, and the other ends of the spokes are connected to an outer wheel to form a stepless transmission with a rear wheel drum type installation. That is to say, by a rider stepping on a pedal and inputting power to the mounting seat 7 through the sprocket 8, and then transmitting the power to the internal gear 9. The internal gear 9 drives the speed regulating mechanism to make a rotational movement by meshing with the gear a24. During the rotation process, its output end drives the output ratchet 12 to rotate. Finally, through the cooperation of the tooth disc a13 and the tooth disc b14, the housing a3 and the housing b2 are driven to rotate, and further the wheel is driven to rotate. This device is driven by gear meshing. Compared with the existing transmission method of changing the friction radius with a sphere, it avoids slipping, improves the transmission efficiency, and at the same time has a simple structure and low cost, and can directly replace the existing bicycle transmissions on the market.

[0032] In this embodiment, as Figures 3 to 5As shown in the figure, the speed regulating mechanism includes bevel gear a25. Corresponding bearing mounting holes are provided on fixed plate a10 and fixed plate b11. A rotating body 29 is mounted in the bearing mounting holes through bearings. Bevel gear a25 is located inside rotating body 29. Bevel gear a25 meshes with bevel gear b26. A speed regulating screw 27 is provided on one side of bevel gear b26. A slider 28 is helically mounted on speed regulating screw 27. A receiving cavity a and a receiving cavity b31 are provided on rotating body 29. Bevel gear b26 is located inside receiving cavity a. Speed regulating screw 27 is located inside receiving cavity b31. And a chute 30 is provided at the upper end of receiving cavity b31. Both sides of the upper end of slider 28 are located inside chute 30. A connecting rod 21 is mounted on slider 28. An output mechanism is mounted on connecting rod 21. Specifically, rotating body 29 is mounted in the bearing mounting holes through bearings, enabling it to rotate axially around itself. Bevel gear a25 is located inside the square notch of rotating body 29, enabling bevel gear a25 to move radially on rotating body 29. Speed regulating screw 27 is matched with bevel gear b26 through a trapezoidal thread structure. The self-locking force generated by the trapezoidal thread match enables speed regulating screw 27 to drive slider 28 to move along chute 30 when rotating, thereby driving the output mechanism to move synchronously. Further, as Figure 7 shown in the figure, a finger dial is provided on outer ring a4. A bushing 34 is movably mounted on main shaft 1. A moving plate 35 is provided at one end of bushing 34. A convex block b36 is provided on the other side of moving plate 35. A convex block c37 corresponding to convex block b36 is provided on the side surface of bevel gear a25. Specifically, when pulling the finger dial to drive outer ring a4 to rotate, outer ring a4 will drive bushing 34 to move along bevel gear a25 during rotation. Since a convex block c37 corresponding to convex block b36 is provided on the side surface of bevel gear a25, convex block b36 and convex block c37 will be stuck to each other, thereby preventing bevel gear a25 and rotating body 29 from rotating together. At this time, when stepping on the foot pedal forward, sprocket 8 is driven to rotate, and the power is transmitted to rotating body 29, enabling rotating body 29 to rotate around itself. Since bevel gear a25 is stuck at this time to limit its rotation, speed regulating screw 27 will rotate on its own and drive slider 28 to move away from the rotation center, thereby increasing the rotation radius of slider 28, that is, increasing the transmission ratio. Similarly, if the foot pedal is reversed, the rotation radius of slider 28 will be reduced, thereby achieving the effect of reducing the transmission ratio.

[0033] In this embodiment, as Figure 6As shown in the figure, the output mechanism includes a lever a20 and a lever b19. The lever a20 and the lever b19 are arranged vertically and are rotatably mounted on the surface of the connecting rod 21. Round holes are provided at the ends of the lever a20 and the lever b19. A return spring is arranged in the round holes. The return spring is sleeved outside the rotating shaft a17 and the rotating shaft b. Bearings are installed at both ends of the rotating shaft a17 and the rotating shaft b. And a semi-helical gear 18 is provided at the upper ends of the rotating shaft a17 and the rotating shaft b. The semi-helical gear 18 meshes with the tooth groove c33 on the output ratchet 12. Specifically, the rotating shaft a17 and the rotating shaft b are respectively installed in the round holes of the corresponding levers, so that the rotating shaft a17 and the rotating shaft b can simultaneously perform rotational motion and axial motion along the round holes in the lever round holes. And the return spring is sleeved outside the rotating shaft a17 and the rotating shaft b. The main function of the return spring is to return the rotating shaft a17 and the rotating shaft b. Since the semi-helical gear 18 meshes with the tooth groove c33 on the output ratchet 12, the rotating shaft a17 will drive the output ratchet 12 to rotate unidirectionally during the rotation process. At the same time, the tooth disc a13 is fixedly installed on the side of the output ratchet 12, thereby driving the tooth disc a13 to rotate. And the tooth disc b14 meshes with the tooth disc a13, so that the tooth disc a13 and the tooth disc b14 rotate synchronously. The tooth disc b14 is installed on the side of the outer shell a3. The other side of the outer shell a3 is connected to the outer shell b2, so that the outer shell a3 and the outer shell b2 rotate synchronously, and then the wheels rotate. Further, an arc groove a15 is provided on the surface of the fixing plate b11. An arc groove b is provided on the output ratchet 12. The tooth groove c33 is located in the arc groove b. The upper bearing is located in the arc groove b, and the lower bearing is located in the arc groove a15. Specifically, the main functions of the arc groove a15 and the arc groove b are to limit the movement of the bearings so that they can only move in the arc grooves.

[0034] In this embodiment, a rotating shaft c passes through the outer ends of the sides of the fixing plate b11 and the fixing plate a10. Bearing b16 is provided at both ends of the rotating shaft c. The bearing b16 is in contact with the inner surfaces of the outer shell a3 and the outer shell b2. Specifically, the main function of the bearing b16 is to cooperate with the rotation of the outer shell a3 and the outer shell b2.

[0035] Further, a clutch finger 6 is provided on the outer ring b5. One end of the outer ring b5 abuts against the tooth disc a13. A limiting plate is provided at the other end of the outer ring b5. The limiting plate is fixedly installed on the main shaft 1. Still further, a stepped hole is provided on the output ratchet 12. A slider b corresponding to the stepped hole is provided on the side of the tooth disc a13. Specifically, the outer ring b5 is driven to rotate by the clutch finger 6. Since the outer ring b5 is spirally installed on the main shaft 1, during the rotation of the outer ring b5, it will move axially along the main shaft 1, thereby pushing the tooth disc a13, so that the tooth disc a13 and the tooth disc b14 are disengaged from meshing, achieving the effect of disconnecting the output power from the outer shell.

[0036] The power transmission process of the present invention is as follows: The rider steps on the pedal and inputs power to the mounting seat 7 via the sprocket 8, and then transmits the power to the internal gear 9. The internal gear 9 is driven to rotate by meshing with the gear a24. Since the side of the gear a24 is mounted on the rotating body 29, the rotating body 29 rotates. The bevel gear b26 rotates to drive the speed regulating screw 27 to rotate. The speed regulating screw 27 is matched with the bevel gear b26 through a trapezoidal thread structure, and the self-locking force generated by the trapezoidal thread matching enables the speed regulating screw 27 to drive the slider 28 to move along the chute 30 when rotating, thereby driving the swinging of the force arm a20 and the force arm b19, causing the bearings at both ends of the rotating shaft a17 and the rotating shaft b to perform circular reciprocating swinging in the arc groove. Since the semi-helical gear 18 meshes with the tooth groove c33 on the output ratchet 12, the rotating shaft a17 will drive the output ratchet 12 to rotate unidirectionally during the rotation process. At the same time, the tooth disc a13 is fixedly mounted on the side of the output ratchet 12, thereby driving the tooth disc a13 to rotate. The tooth disc b14 meshes with the tooth disc a13, enabling the tooth disc a13 and the tooth disc b14 to rotate synchronously. The tooth disc b14 is mounted on the side of the outer shell a3, and the other side of the outer shell a3 is connected to the outer shell b2, so that the outer shell a3 and the outer shell b2 rotate synchronously, and further the wheel rotates; and the outer ring b5 is driven to rotate by the clutch shifter 6. Since the outer ring b5 is helically mounted on the main shaft 1, the outer ring b5 will move axially along the main shaft 1 during the rotation process, thereby pushing the tooth disc a13, so that the tooth disc a13 and the tooth disc b14 are disengaged from meshing, achieving the effect of disconnecting the output power from the outer shell, and enabling the outer shell to rotate freely in both forward and reverse directions.

[0037] The pulsating output principle of the present invention is as follows: By setting four groups of force arms to cooperate with the output ratchet 12, only one group of rotating shafts with the fastest swinging in the same time period cooperates with the output ratchet 12 to transmit power. The calculation formula for the swinging arc length of the force arm is:

[0038] ;

[0039] Among them, is the swinging arc length, is the rotation radius of the slider, is the rotation angle of the rotating body. Since only one group of rotating shafts with the fastest swinging in the same time period cooperates with the output ratchet 12 to transmit power, the four groups of rotating shafts respectively only mesh the angle, so the four groups of arc length formulas are simplified to:

[0040] When , ;

[0041] When , ;

[0042] When , ;

[0043] When , ;

[0044] The power output curve obtained according to the above formula is as Figure 8 shown, that is, the pulsating curve. By setting the internal gear 9 and the gear a24 to be in an elliptical gear fit, it is possible to blunt the arc of the output curve and make the transmission curve smoother.

[0045] The stepless speed change principle of the present invention is as follows: It can be known from the calculation formula that by adjusting the rotation radius of the slider 28 in the rotating body 29 , the swing arc length of the lever arm can be controlled, thereby realizing the stepless speed change function. That is, when pulling the handlebar finger shift to drive the outer ring a4 to rotate, the outer ring a4 will drive the sleeve 34 to move along the bevel gear a25 during the rotation process. Since the side of the bevel gear a25 is provided with a convex block c37 corresponding to the convex block b36, the convex block b36 and the convex block c37 will be stuck to each other, thus preventing the bevel gear a25 and the rotating body 29 from rotating together. At this time, when stepping on the foot pedal forward again, it drives the sprocket 8 to rotate and transmits the power to the rotating body 29, so that the rotating body 29 rotates around itself. Since the bevel gear a25 is stuck at this time to limit its rotation, the speed regulating screw 27 rotates self and drives the slider 28 to move away from the rotation center, thereby increasing the rotation radius of the slider 28, that is, increasing the transmission ratio. Similarly, if the foot pedal is reversed, the rotation radius of the slider 28 will be reduced, thereby achieving the effect of reducing the transmission ratio.

[0046] The function realization and operation description of the present invention are as follows:

[0047] Forward function: Whether the foot pedal is stepped forward or backward, the wheel rotates forward;

[0048] Wheel forward overrun function: When the foot pedal does not move, the wheel can rotate freely forward and cannot rotate backward;

[0049] Wheel backward overrun function: When the foot pedal does not move, pulling the clutch finger shift 6, the wheel can rotate freely forward and backward;

[0050] Manual speed regulation function: Pulling the handlebar finger shift, when the foot pedal rotates forward, the transmission ratio is increased, and when the foot pedal rotates backward, the transmission ratio is decreased;

[0051] Changing the transmission ratio when parking: Pulling the handlebar finger shift and the clutch finger shift 6 simultaneously, when the foot pedal rotates, the wheel will not rotate when changing the transmission ratio. The main function of this function is that when parking at a large transmission ratio, it is more difficult to start again. Therefore, the transmission ratio can be reduced when parking, so that starting is more labor-saving, while the existing gear transmission cannot change the transmission ratio when parking.

[0052] In another embodiment, when it is needed to be used for a step scooter, the outer shell a2 and the outer shell b3 are removed, the power input shaft of the transmission is directly connected to the engine output shaft, the transmission output shaft is directly connected to the rear wheel through a sprocket or a pulley, the whole continuously variable transmission device is directly installed on the rear wheel shaft, the existing transmission is removed, and it is directly connected to the engine output shaft through a sprocket.

[0053] When it is needed to be used for an automobile, the outer shell a2 and the outer shell b3 are removed, the existing electronic control system is added for intelligent speed regulation, then it is connected to the engine output shaft, and then the power transmission is carried out.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pulsating continuously variable transmission, characterized in that: The invention comprises a main shaft (1), on which an outer ring a (4), a mounting seat (7), an inner gear (9), a fixing plate a (10), a fixing plate b (11), an output ratchet (12), a toothed disc a (13), a toothed disc b (14) and an outer ring b (5) are sequentially mounted, a sprocket (8) is arranged on the surface of the mounting seat (7), a tooth groove a (23) provided on the inner side of the inner gear (9) meshes with a gear a (24), a side of the gear a (24) is mounted on a rotating body (29), a speed regulating mechanism is arranged in the rotating body (29), an output end of the speed regulating mechanism meshes with the output ratchet (12), the toothed disc a (13) is fixedly mounted on the side of the output ratchet (12), and the toothed disc b (14) meshes with the toothed disc a (13), the toothed disc b (14) is mounted on the side of an outer shell a (3), and the other side of the outer shell a (3) is connected to the outer shell b (2).

2. The pulsation type continuously variable transmission device according to claim 1, characterized in that: The mounting seat (7) comprises an inner ring and an outer ring, the inner ring being mounted on the main shaft (1), a threaded section being provided at one end of the outer surface of the inner ring, a threaded section corresponding to the threaded section being provided on the inner surface of the outer ring, a limiting groove being provided on the outer surface of the outer ring, and a protrusion being provided on the inner side of the sprocket (8) and the inner gear (9), and the protrusion being located in the limiting groove.

3. The pulsation type continuously variable transmission device according to claim 2, characterized in that: The speed regulating mechanism comprises a bevel gear a (25), the fixing plate a (10) and the fixing plate b (11) are provided with bearing mounting holes correspondingly, the rotating body (29) is mounted in the bearing mounting holes via bearings, the bevel gear a (25) is located in the rotating body (29), the bevel gear a (25) is meshed with the bevel gear b (26), a speed regulating screw (27) is provided on one side of the bevel gear b (26), and a sliding screw (27) is spirally mounted on the speed regulating screw (27). The block (28) is provided with an accommodating chamber a and an accommodating chamber b (31), the bevel gear b (26) is located in the accommodating chamber a, the speed regulating screw (27) is located in the accommodating chamber b (31), and a slide groove (30) is provided at the upper end of the accommodating chamber b (31), both sides of the upper end of the slider (28) are located in the slide groove (30), a connecting rod (21) is installed on the slider (28), and an output mechanism is installed on the connecting rod (21).

4. The pulsation type continuously variable transmission device according to claim 3, characterized in that: The output mechanism comprises a force arm a (20) and a force arm b (19), wherein the force arm a (20) and the force arm b (19) are distributed up and down and are rotatably mounted on the surface of the connecting rod (21), and circular holes are opened at the ends of the force arm a (20) and the force arm b (19), and return springs are arranged in the circular holes, and the return springs are sleeved on the outer sides of the rotating shaft a (17) and the rotating shaft b, and bearings are installed at both ends of the rotating shaft a (17) and the rotating shaft b, and semi-oblique teeth (18) are arranged at the upper ends of the rotating shaft a (17) and the rotating shaft b, and the semi-oblique teeth (18) are meshed with tooth grooves c (33) on the output ratchet (12).

5. The pulsation type continuously variable transmission device according to claim 4, characterized in that: The surface of the fixing plate b (11) is provided with an arc groove a (15), the output ratchet (12) is provided with an arc groove b, the tooth groove c (33) is located in the arc groove b, the upper end bearing is located in the arc groove b, and the lower end bearing is located in the arc groove a (15).

6. The pulsation type continuously variable transmission device according to claim 5, characterized in that: A rotating shaft c passes through the outer ends of the side surfaces of the fixing plate b (11) and the fixing plate a (10), and bearings b (16) are provided at both ends of the rotating shaft c. The bearings b (16) are connected to the inner surfaces of the outer shell a (3) and the outer shell b (2).

7. The pulsation type continuously variable transmission device according to claim 1, characterized in that: The outer ring b (5) is provided with a clutch finger shifter (6), one end of the outer ring b (5) abuts against the toothed disc a (13), and the other end of the outer ring b (5) is provided with a limit plate, and the limit plate is fixedly mounted on the main shaft (1).

8. The pulsation type continuously variable transmission device according to claim 7, characterized in that: The output ratchet (12) is provided with a step hole, and a sliding block b corresponding to the step hole is provided on the side surface of the toothed disc a (13).

9. The pulsation type continuously variable transmission device according to claim 3, characterized in that: The outer ring a (4) is provided with a handlebar, the main shaft (1) is movably provided with a sleeve (34), one end of the sleeve (34) is provided with a movable plate (35), the other side of the movable plate (35) is provided with a protrusion b (36), and the side surface of the bevel gear a (25) is provided with a protrusion c (37) corresponding to the protrusion b (36).

10. The pulsation type continuously variable transmission device according to claim 1, characterized in that: A plurality of mounting holes are arranged on the outer sides of the housing a (3) and the housing b (2).

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