Automatic internal gear and bicycle

Abstract

The application provides an automatic internal gear box, which comprises a mounting shaft, an input mechanism, an output mechanism, a gear shifting mechanism and a gear shifting control mechanism; the gear shifting mechanism comprises at least a clutch, a first planetary gear train and a second planetary gear train; the gear shifting control mechanism comprises a driving unit, a first transmission unit, a control unit, a first clutch unit and a second clutch unit, the first transmission unit is connected with the driving unit; the second clutch unit is connected with the control unit, the first clutch unit is connected with the control unit in the axial direction and passes through the second clutch unit; the driving unit can drive the first transmission unit to rotate, so that the first planetary gear train is combined with the output mechanism; the driving unit can further drive the first transmission unit to rotate, so that the second planetary gear train is combined with the output mechanism. Compared with the prior art, the automatic internal gear box and the bicycle provided by the application do not have the phenomenon of "gear skipping" in the gear adjusting process, and the riding experience of the rider is better guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bicycle derailleur, in particular to an automatic internal derailleur and a bicycle. BACKGROUND

[0002] The internal derailleur applied to the bicycle is roughly divided into two categories: manual internal derailleur and automatic internal derailleur. The automatic internal derailleur can automatically adjust the gear shift with the change of the bicycle speed, without the need for additional manual operation by the rider, thereby better improving the riding experience of the rider.

[0003] In the prior art, the automatic internal derailleur usually includes a mounting shaft, an input mechanism, an output mechanism, a derailleur mechanism and a gear shift control mechanism. The input mechanism is connected with the freewheel of the rear wheel of the bicycle (or the input mechanism can be a component including the freewheel), so that when the automatic internal derailleur is installed on the bicycle, the input mechanism can be driven to rotate by the freewheel. The output mechanism is usually a rear wheel hub, so that when the automatic internal derailleur is installed on the bicycle, the rotation of the output mechanism can drive the rear wheel to rotate, realizing the movement of the bicycle. The derailleur mechanism is arranged between the input mechanism and the output mechanism, and is a transmission component between the input mechanism and the output mechanism, used to transmit the rotation power of the input mechanism to the output mechanism, thereby driving the output mechanism to rotate. The derailleur mechanism can be provided with multiple power transmission paths, and the gear shift control mechanism is used to control the derailleur mechanism. By controlling the clutch between the components in the derailleur mechanism, or by controlling the clutch between the derailleur mechanism and the output mechanism through the gear shift control mechanism, the gear shift of the bicycle is realized.

[0004] However, in the prior art, the automatic internal derailleur is prone to "overgear" phenomenon during gear shift adjustment. For example, during the gear shift adjustment, the automatic internal derailleur directly shifts from a low gear to another gear through an intermediate gear, thereby affecting the riding experience of the rider. SUMMARY

[0005] The automatic internal derailleur in the prior art is prone to "overgear" phenomenon during gear shift adjustment, which affects the riding experience of the rider. The present application provides an automatic internal derailleur which can effectively avoid the "overgear" phenomenon, thereby better protecting the riding experience of the rider.

[0006] An automatic internal derailleur includes a mounting shaft, an input mechanism, an output mechanism, a derailleur mechanism and a gear shift control mechanism.

[0007] The input mechanism and the output mechanism are rotatably mounted on the mounting shaft.

[0008] The variable speed mechanism is mounted on the mounting shaft, and the variable speed mechanism comprises at least a clutch, a first planetary gear train and a second planetary gear train, the clutch combines the input mechanism with the output mechanism;

[0009] The shift control mechanism comprises a driving unit, a first transmission unit, a control unit, a first clutch unit and a second clutch unit, the driving unit is connected with the output mechanism, the first transmission unit is connected with the driving unit, and the first transmission unit at least partially extends into the control unit;

[0010] In the axial direction, the second clutch unit is located between the first clutch unit and the control unit, the second clutch unit is connected with the control unit, and the first clutch unit is provided with a connecting arm, the connecting arm is connected with the control unit in the axial direction through the second clutch unit;

[0011] The driving unit can drive the first transmission unit to rotate relative to the output mechanism in a first direction to a first state, thereby driving the control unit to rotate, so as to drive the first clutch unit to rotate and combine the first planetary gear train with the output mechanism;

[0012] The driving unit can also drive the first transmission unit to further rotate relative to the output mechanism in the first direction to a second state, thereby driving the control unit to further rotate, so as to drive the second clutch unit to rotate and combine the second planetary gear train with the output mechanism.

[0013] Preferably, the control unit comprises a first control unit and a second control unit, the first control unit is connected with the connecting arm, and the second control unit is connected with the second clutch unit, and the first transmission unit at least partially extends into the first control unit and the second control unit;

[0014] When the first transmission unit rotates to the first state, the first transmission unit drives the first control unit to rotate;

[0015] When the first transmission unit rotates to the second state, the first transmission unit drives the second control unit to rotate.

[0016] Preferably, the first control unit comprises a first mounting seat and a first elastic component, and the connecting arm is connected with the first mounting seat;

[0017] A first sliding channel extending in the circumferential direction is formed in the first mounting seat, and the first sliding channel comprises a first sliding member sliding channel and a first elastic member sliding channel which are in communication with each other;

[0018] The first elastic assembly comprises a first sliding member and a first elastic member, the first elastic member is arranged in the first elastic member sliding channel, one end of the first elastic member is connected with the first mounting base, and the other end of the first elastic member is connected with the first sliding member; the first sliding member is arranged in the first sliding member sliding channel and extends out of the first sliding channel in the circumferential direction;

[0019] When the first transmission unit rotates to the first state, the first transmission unit drives the first sliding member to slide along the first sliding channel, so as to compress or stretch the first elastic member, and make the first mounting base rotate.

[0020] Preferably, a second sliding channel extending in the circumferential direction is further arranged on the first mounting base, and the second sliding channel comprises a second sliding member sliding channel and a second elastic member sliding channel which are in communication with each other;

[0021] The first control unit further comprises a second elastic assembly, the second elastic assembly comprises a second sliding member and a second elastic member, the second elastic member is arranged in the second elastic member sliding channel, one end of the second elastic member is connected with the first mounting base, and the other end of the second elastic member is connected with the second sliding member; the second sliding member is arranged in the second sliding member sliding channel and extends out of the second sliding channel in the circumferential direction;

[0022] The second sliding member is used to abut against the first transmission unit, and when the first transmission unit and the output mechanism rotate relatively, the second elastic member is stretched or compressed, so that the second sliding member slides towards the rotation direction of the first transmission unit.

[0023] Preferably, the first elastic member is sleeved on the first sliding member, the first elastic member comprises a first spring and a first sleeve, one end of the first spring is connected with the first mounting base, and the other end of the first spring is connected with the first sliding member through the first sleeve;

[0024] The second elastic member is sleeved on the second sliding member, the second elastic member comprises a second spring and a second sleeve, one end of the second spring is connected with the first mounting base, and the other end of the second spring is connected with the second sliding member through the second sleeve.

[0025] Preferably, the second control unit comprises a second mounting base and a third elastic assembly, the second clutch unit is connected with the second mounting base;

[0026] A third sliding channel extending in the circumferential direction is arranged on the second mounting base, and the third sliding channel comprises a third sliding member sliding channel and a third elastic member sliding channel which are in communication with each other;

[0027] The third elastic assembly comprises a third sliding member and a third elastic member, the third elastic member is arranged in the third elastic member sliding channel, one end of the third elastic member is connected with the second mounting base, and the other end of the third elastic member is connected with the third sliding member; the third sliding member is arranged in the third sliding member sliding channel and extends out of the third sliding channel in the circumferential direction;

[0028] When the first transmission unit rotates from the first state to the second state, the first transmission unit drives the third sliding member to slide along the third sliding channel, so as to compress or stretch the third elastic member, and make the second mounting base rotate.

[0029] Preferably, a fourth sliding channel extending in the circumferential direction is further arranged on the second mounting base, the fourth sliding channel comprises a fourth sliding member sliding channel and a fourth elastic member sliding channel which are communicated with each other;

[0030] The second control unit further comprises a fourth elastic assembly, the fourth elastic assembly comprises a fourth sliding member and a fourth elastic member, the fourth elastic member is arranged in the fourth elastic member sliding channel, one end of the fourth elastic member is connected with the second mounting base, and the other end of the fourth elastic member is connected with the fourth sliding member; the fourth sliding member is arranged in the fourth sliding member sliding channel and extends out of the fourth sliding channel in the circumferential direction;

[0031] The fourth sliding member is used to abut against the first transmission unit, and when the first transmission unit and the output mechanism rotate relatively, the fourth elastic member is stretched or compressed, so that the fourth sliding member slides towards the rotation direction of the first transmission unit.

[0032] Preferably, the third elastic member is sleeved on the third sliding member, the third elastic member comprises a third spring and a third sleeve, one end of the third spring is connected with the second mounting base, and the other end of the third spring is connected with the third sliding member through the third sleeve;

[0033] The fourth elastic member is sleeved on the fourth sliding member, the fourth elastic member comprises a fourth spring and a fourth sleeve, one end of the fourth spring is connected with the second mounting base, and the other end of the fourth spring is connected with the fourth sliding member through the fourth sleeve.

[0034] Preferably, a first connecting arm avoiding groove is arranged on the second clutch unit, the first connecting arm avoiding groove penetrates through the second clutch unit in the axial direction, and the first connecting arm avoiding groove extends in the circumferential direction on the second clutch unit, and the connecting arm can slide in the first connecting arm avoiding groove in the circumferential direction.

[0035] Preferably, the output mechanism is provided with a second connecting arm avoiding slot corresponding to the connecting arm, the second connecting arm avoiding slot is arranged on the output mechanism in a circumferential direction, and the connecting arm can slide in the second connecting arm avoiding slot in a circumferential direction.

[0036] Preferably, the connecting arm is provided with at least two, all the connecting arms are distributed on the first clutch unit in a circumferential direction at equal intervals, and each connecting arm is connected with the control unit in an axial direction through the second clutch unit.

[0037] Preferably, the control unit is provided with a connecting lug, the connecting arm is inserted into the connecting lug, and each connecting arm is connected with one connecting lug.

[0038] Preferably, the driving unit is a centrifugal block, the gear shifting control mechanism further comprises a centrifugal block mounting seat and an elastic reset member, the centrifugal block mounting seat is connected with the output mechanism, and the driving unit is rotatably mounted on the centrifugal block mounting seat.

[0039] The elastic reset member is connected with the driving unit, and is used to provide a restoring force for the driving unit block through its own elastic force, so as to restore and maintain the state of the driving unit.

[0040] Preferably, the gear shifting control mechanism further comprises an adjusting mechanism, the adjusting mechanism comprises an adjusting gear ring and an adjusting gear, and the adjusting gear ring is connected with the elastic reset member.

[0041] The adjusting gear is engaged with the adjusting gear ring, and the adjusting gear can drive the adjusting gear ring to rotate, so as to change the deformation state of the elastic reset member, and change the restoring force of the centrifugal block.

[0042] Preferably, the gear shifting control mechanism further comprises a second transmission unit, and the second transmission unit is synchronously connected with the first transmission unit.

[0043] In an axial direction, the first transmission unit and the second transmission unit are located on opposite sides of the driving unit, and the first transmission unit is located on a side close to the gear shifting mechanism.

[0044] The two ends of the elastic reset member are respectively connected with the adjusting gear ring and the second transmission unit.

[0045] Preferably, the centrifugal block mounting seat comprises a first centrifugal block mounting seat and a second centrifugal block mounting seat connected with the output mechanism.

[0046] In an axial direction, the first centrifugal block mounting seat and the second centrifugal block mounting seat are located on opposite sides of the driving unit, and the first centrifugal block mounting seat is located on a side close to the gear shifting mechanism.

[0047] The adjusting gear is rotatably installed on the second centrifugal block mounting seat.

[0048] Preferably, the driving unit is rotatably installed on the first centrifugal block mounting seat and the second centrifugal block mounting seat through a centrifugal block rotating shaft, and the driving unit is connected with the first transmission unit and the second transmission unit through a centrifugal block output shaft respectively.

[0049] Preferably, the second centrifugal block mounting seat is provided with a first suction accessory, and the second transmission unit is provided with a second suction accessory.

[0050] The first suction accessory is used to suck the second suction accessory to keep the state of the second transmission unit after rotation.

[0051] Preferably, the first suction accessory comprises a first elastic passive suction accessory and a second passive suction accessory which are arranged in a circumferential staggered manner, and the second suction accessory comprises a first magnetic suction accessory and a second magnetic suction accessory which are arranged in a circumferential staggered manner.

[0052] The first elastic passive suction accessory is used to suck the first magnetic suction accessory to keep the state of the second transmission unit after rotation, so that the driving unit keeps the first state.

[0053] The second passive suction accessory is used to suck the second magnetic suction accessory to keep the state of the second transmission unit after rotation, so that the driving unit keeps the second state.

[0054] Preferably, the output mechanism is provided with a mounting hole which penetrates the output mechanism, and the adjusting gear is sealingly matched with the hole wall of the mounting hole.

[0055] Preferably, the adjusting gear comprises a gear part, a sealing part and an adjusting part which are connected in sequence.

[0056] The gear part is engaged with the adjusting gear ring.

[0057] The sealing part is sealingly matched with the hole wall of the mounting hole.

[0058] The adjusting part is provided with an adjusting hole on the surface away from the gear part.

[0059] Meanwhile, the application also provides a bicycle which comprises a vehicle body and an automatic internal derailleur as described in any one of the above, and the automatic internal derailleur is installed on the driving wheel of the vehicle body.

[0060] Compared with the prior art, the automatic internal gearbox provided by the application comprises a mounting shaft, an input mechanism, an output mechanism, a gear shifting mechanism and a gear shifting control mechanism; the input mechanism and the output mechanism are rotatably mounted on the mounting shaft; the gear shifting mechanism is mounted on the mounting shaft, and the gear shifting mechanism at least comprises a clutch, a first planetary gear train and a second planetary gear train, and the clutch combines the input mechanism and the output mechanism; the gear shifting control mechanism comprises a driving unit, a first transmission unit, a control unit, a first clutch unit and a second clutch unit, the driving unit is connected with the output mechanism, the first transmission unit is connected with the driving unit, and the first transmission unit at least partially extends into the control unit; in the axial direction, the second clutch unit is located between the first clutch unit and the control unit; the second clutch unit is connected with the control unit, the first clutch unit is provided with a connecting arm, the connecting arm is connected with the control unit in the axial direction through the second clutch unit; the driving unit can drive the first transmission unit to rotate relative to the output mechanism in a first direction to a first state, thereby driving the control unit to rotate, so that the first clutch unit rotates to combine the first planetary gear train and the output mechanism; the driving unit can also drive the first transmission unit to further rotate relative to the output mechanism in the first direction to a second state, thereby driving the control unit to further rotate, so that the second clutch unit rotates to combine the second planetary gear train and the output mechanism. In the automatic internal gearbox, the connecting arm is connected with the control unit in the axial direction through the second clutch unit, so that the first clutch unit and the second clutch unit connected to the same first transmission unit are used to control gear shifting. When the automatic internal gearbox is shifting gears, the first transmission unit is controlled to rotate in the same direction to different angles by the driving unit, so as to realize gear shifting adjustment, and before the driving unit drives the second clutch unit to rotate for gear shifting, the driving unit will first drive the first clutch unit to rotate for gear shifting, so that the phenomenon of "skipping gears" does not occur in the gear adjustment process, and the riding experience of the rider is better guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0062] Figure 1 A cross-sectional structure schematic diagram of an automatic internal gearbox provided by an embodiment;

[0063] Figure 2for Figure 1 A three-dimensional structural diagram of some components in an automatic internal transmission is shown.

[0064] Figure 3 for Figure 1 A cross-sectional view of the automatic internal transmission shown from another angle.

[0065] Figure 4 for Figure 1 A cross-sectional view of the automatic internal transmission shown from another angle.

[0066] Figure 5 for Figure 2 A three-dimensional structural schematic diagram of the first transmission unit shown;

[0067] Figure 6 for Figure 2 A three-dimensional structural diagram of the first mounting base in the first control unit shown;

[0068] Figure 7 for Figure 2 A schematic diagram of the planar structure of some of the components shown;

[0069] Figure 8 for Figure 2 A schematic diagram of the planar structure of some of the components shown;

[0070] Figure 9 for Figure 2 A three-dimensional structural schematic diagram of some components of the first clutch unit is shown;

[0071] Figure 10 for Figure 2 A three-dimensional structural schematic diagram of some components of the second clutch unit is shown;

[0072] Figure 11 for Figure 1 A three-dimensional structural schematic diagram of the inner bushing shown;

[0073] Figure 12 for Figure 1 The diagram shows an exploded view of some components in an automatic internal transmission.

[0074] Figure 13 for Figure 1 A three-dimensional structural diagram of some components in an automatic internal transmission is shown.

[0075] Figure 14 for Figure 13 A three-dimensional structural schematic diagram of the adjusting gear shown;

[0076] Figure 15 for Figure 1 A schematic diagram of the planar structure of the drive unit and the first centrifugal block mounting base in the automatic internal transmission shown.

[0077] Figure 16 for Figure 15 A three-dimensional structural schematic diagram of the driving unit shown;

[0078] Figure 17 for Figure 12 A three-dimensional structural schematic diagram of the first centrifugal block mounting base shown;

[0079] Figure 18 for Figure 12 A three-dimensional structural schematic diagram of the second centrifugal block mounting base shown;

[0080] Figure 19 for Figure 12 A three-dimensional structural schematic diagram of the second transmission unit shown;

[0081] Figure 20 for Figure 1 The diagram shows the planar structure of the second centrifugal block mounting base and the second transmission unit when the automatic internal transmission is in "first gear" mode.

[0082] Figure 21 for Figure 1 The diagram shows the planar structure of the second centrifugal block mounting base and the second transmission unit when the automatic internal transmission is in "second gear" mode.

[0083] Figure 22 for Figure 1 The diagram shows the planar structure of the second centrifugal block mounting base and the second transmission unit when the automatic internal transmission is in "third gear". Detailed Implementation

[0084] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0085] It should be noted that when a component is referred to as being "fixed to", "mounted to", or "set on" another component, it can be directly on or indirectly set on the other component; when a component is "connected" to another component, or when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0086] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present disclosure are merely intended to facilitate the understanding of the present disclosure, and are not intended to limit the scope of the present disclosure. Therefore, any modification, change in proportion relationship, or adjustment in size, which does not affect the effects and purposes of the present disclosure, shall still fall within the scope of the present disclosure.

[0087] The present disclosure provides an automatic internal transmission, which comprises a mounting shaft, an input mechanism, an output mechanism, a transmission mechanism, and a shift control mechanism; the input mechanism and the output mechanism are rotatably mounted on the mounting shaft; the transmission mechanism is mounted on the mounting shaft, and the transmission mechanism at least comprises a clutch, a first planetary gear train, and a second planetary gear train, and the clutch combines the input mechanism and the output mechanism; the shift control mechanism comprises a driving unit, a first transmission unit, a control unit, a first clutch unit, and a second clutch unit; the driving unit is connected with the output mechanism; the first transmission unit is connected with the driving unit, and the first transmission unit at least partially extends into the control unit; in the axial direction, the second clutch unit is located between the first clutch unit and the control unit; the second clutch unit is connected with the control unit; the first clutch unit is provided with a connecting arm, and the connecting arm is connected with the control unit in the axial direction through the second clutch unit; the driving unit can drive the first transmission unit to rotate relative to the output mechanism in a first direction to a first state, thereby driving the control unit to rotate, so as to drive the first clutch unit to rotate, and combine the first planetary gear train and the output mechanism; the driving unit can also drive the first transmission unit to further rotate relative to the output mechanism in the first direction to a second state, thereby driving the control unit to further rotate, so as to drive the second clutch unit to rotate, and combine the second planetary gear train and the output mechanism. In the automatic internal transmission, the connecting arm is connected with the control unit in the axial direction through the second clutch unit, so that the first clutch unit and the second clutch unit for controlling the shift are connected to the same first transmission unit. When the automatic internal transmission shifts, the driving unit controls the first transmission unit to rotate in the same direction to different angles, so as to realize the adjustment of gear positions. Before the driving unit drives the second clutch unit to rotate to shift, the driving unit must first drive the first clutch unit to rotate to shift, so that the phenomenon of "skipping gears" does not occur in the process of adjusting the gear positions, and the riding experience of the rider is better guaranteed.

[0088] Embodiment one

[0089] Please refer to Figures 1 to 22The embodiment provides an automatic internal gear box 100 which is used for automatic gear shifting according to the vehicle speed during the vehicle running.

[0090] The automatic internal gear box 100 comprises a mounting shaft 10, an input mechanism 20, an output mechanism 30, a gear shifting mechanism 40 and a gear shifting control mechanism 50, wherein the input mechanism 20 and the output mechanism 30 are rotatably mounted on the mounting shaft 10. That is, the input mechanism 20 is mounted on the mounting shaft 10 and can rotate relative to the mounting shaft 10, the output mechanism 30 is mounted on the mounting shaft 10 and can rotate relative to the mounting shaft 10, and the mounting shaft 10 is the rotating center shaft of the input mechanism 20 and the output mechanism 30. Specifically, in the embodiment, the input mechanism 20 is a flywheel assembly which specifically comprises a flywheel and a flywheel seat connected with the flywheel, and the output mechanism 30 is a hub. The input mechanism 20 is used to be connected with pedals on a bicycle through a chain, and the output mechanism 30 is used to be connected with a driving wheel on the bicycle. When a rider rides the bicycle, the rider pedals the pedals to drive the input mechanism 20 to rotate, and then the input mechanism 20 inputs driving force into the automatic internal gear box 100, and the driving force is output through the output mechanism 30 to drive the bicycle driving wheel to rotate, so that the bicycle runs.

[0091] The gear shifting mechanism 40 is mounted on the mounting shaft 10 and located between the input mechanism 20 and the output mechanism 30, and is used to transmit the driving force of the input mechanism 20 to the output mechanism 30. That is, the gear shifting mechanism 40 is arranged between the input mechanism 20 and the output mechanism 30, and is used to transmit the driving force input from the side of the input mechanism 20 to the side of the output mechanism 30.

[0092] The gear shifting mechanism 40 at least comprises a clutch 41, a first planetary gear train 42 and a second planetary gear train 43, and the clutch 41 combines the input mechanism 20 and the output mechanism 30.

[0093] That is, the automatic internal gear box 100 has at least three gears. In the embodiment, the automatic internal gear box 100 is specifically a three-gear internal gear box, and the combination between the first planetary gear train 42, the second planetary gear train 43 and the output mechanism 30 is controlled by the gear shifting control mechanism 50 to realize the gear shifting. Of course, in other embodiments, the automatic internal gear box 100 can also be an internal gear box with more gears, such as a third planetary gear train, a fourth planetary gear train and the like can also be arranged in the gear shifting mechanism 40. In the embodiment, only the three-gear automatic internal gear box 100 is taken as an example for description.

[0094] The shift control mechanism 50 comprises a driving unit 51, a first transmission unit 52, a control unit 53, a first clutch unit 54 and a second clutch unit 55. The driving unit 51 is connected with the output mechanism 30. The first transmission unit 52 is connected with the driving unit 51 and at least partially extends into the control unit 53.

[0095] In the axial direction, the second clutch unit 55 is located between the first clutch unit 54 and the control unit 53. The second clutch unit 55 is connected with the control unit 53. The first clutch unit 54 is provided with a connecting arm 541 which is connected with the control unit 53 in the axial direction through the second clutch unit 55. That is, in the axial direction, the first clutch unit 54, the second clutch unit 55 and the control unit 53 are sequentially arranged, and the second clutch unit 55 is connected with the control unit 53. Meanwhile, the first clutch unit 54 is provided with the connecting arm 541, and the first clutch unit 54 is connected with the control unit 53 through the connecting arm 541, so that the first clutch unit 54 is connected with the control unit 53 in the form of "bridge" (the first clutch unit 54 passes through the second clutch unit 55 in the axial direction through the connecting arm 541). Thus, the first clutch unit 54 and the second clutch unit 55 are simultaneously connected with the control unit 53.

[0096] It should be noted that, in this embodiment, the axial direction, the circumferential direction and the radial direction are all taken as references of the axial direction, the circumferential direction and the radial direction of the mounting shaft 10.

[0097] The driving unit 51 can drive the first transmission unit 52 to rotate relative to the output mechanism 30 in a first direction to a first state, thereby driving the control unit 53 to rotate, so as to drive the first clutch unit 54 to rotate, and combine the first planetary gear train 42 with the output mechanism 30. That is, the driving unit 51 can drive the first transmission unit 52 to rotate, thereby driving the control unit 53 to rotate, and then driving the first clutch unit 54 to rotate through the control unit 53, so as to combine the first planetary gear train 42 with the output mechanism 30. The driving force input by the input mechanism 20 is transmitted to the output mechanism 30 through the first planetary gear train 42, so as to change the power transmission path in the automatic internal gearbox 100 and realize the shift of the automatic internal gearbox 100.

[0098] The driving unit 51 can also drive the first transmission unit 52 to further rotate relative to the output mechanism 30 in the first direction to a second state, thereby driving the control unit 53 to further rotate, so as to drive the second clutch unit 55 to rotate, and combine the second planetary gear train 43 with the output mechanism 30. That is, the driving unit 51 can also drive the first transmission unit 52 to further rotate, thereby driving the control unit 53 to further rotate, and then driving the second clutch unit 55 to rotate through the control unit 53, so as to combine the second planetary gear train 43 with the output mechanism 30. The driving force input by the input mechanism 20 is transmitted to the output mechanism 30 through the second planetary gear train 43, so as to realize the change of the power transmission path in the automatic transmission 100, and realize the gear shifting of the automatic transmission 100. The first direction can be the clockwise direction or the counterclockwise direction. It should be noted that the first state and the second state refer to the states of the first transmission unit 52 after rotating from the initial position to two different angles in the same direction. That is, the first state is the state of the first transmission unit 52 after rotating from the initial position to an angle, and the second state is the state of the first transmission unit 52 after rotating from the initial position to another angle in the same direction. The angle required for rotating to the second state is greater than the angle required for rotating to the first state, that is, the second state must be passed through after the first state.

[0099] Specifically, in the present embodiment, when the first transmission unit 52 is in the initial state, i.e. the driving unit 51 does not drive the first transmission unit 52, the first clutch unit 54 and the second clutch unit 55 are not rotated, at this time the first planetary gear train 42 and the second planetary gear train 43 are not combined with the output mechanism 30, the power in the automatic transmission 100 is transmitted from the input mechanism 20 to the output mechanism 30 through the clutch 41, the automatic transmission 100 is in the "first gear" (direct gear) state. When the driving unit 51 drives the first transmission unit 52 to rotate to the first state, the first clutch unit 54 is driven to rotate, thereby combining the first planetary gear train 42 with the output mechanism 30, the power in the automatic transmission 100 is transmitted from the input mechanism 20 to the output mechanism 30 through the first planetary gear train 42, the automatic transmission 100 is in the "second gear" state. When the driving unit 51 drives the first transmission unit 52 to further rotate to the second state, the second clutch unit 55 is driven to rotate, thereby combining the second planetary gear train 43 with the output mechanism 30, the power in the automatic transmission 100 is transmitted from the input mechanism 20 to the output mechanism 30 through the second planetary gear train 43, the automatic transmission 100 is in the "third gear" state. When the first clutch unit 54 combines the first planetary gear train 42 with the output mechanism 30, the first clutch unit 54 "overcomes" the clutch 41, so that the power is output through the first planetary gear train 42. When the second clutch unit 55 combines the second planetary gear train 43 with the output mechanism 30, the second clutch unit 55 will "overcome" the first clutch unit 54 and the clutch 41, so that the power is output through the second planetary gear train 43. The change of the power transmission path by "overcoming" is well known in the art, and will not be described here. In the present embodiment, the first clutch unit 54 and the second clutch unit 55 are both one-way overrunning clutches.

[0100] It can be understood that in the prior art automatic derailleur, the drive units and the clutch units controlling different gears are independent of each other. In the specific adjustment process, different drive units control different clutch units to rotate, thereby achieving adjustment between multiple gears. For example, when the automatic derailleur has three gears and is a centrifugal block automatic derailleur, the automatic derailleur usually includes a two-gear centrifugal block, a three-gear centrifugal block, a first clutch unit, and a second clutch unit. The two-gear centrifugal block is connected to the first clutch unit, and the three-gear centrifugal block is connected to the second clutch unit. When the bicycle is in a first gear state, neither the two-gear centrifugal block nor the three-gear centrifugal block operates. When the bicycle speed rises to a certain extent, the two-gear centrifugal block will be "thrown out" due to the centrifugal force, thereby driving the first clutch unit to rotate, so that the first clutch unit is combined with the two-gear planetary gear train in the derailleur. At this time, the bicycle is in a two-gear state. When the bicycle speed further rises, the three-gear centrifugal block will be "thrown out" due to the centrifugal force, thereby driving the second clutch unit to rotate, so that the clutch controller in the second clutch unit is combined with the three-gear planetary gear train in the derailleur. At this time, the bicycle is in a three-gear state. In use, it is very easy to appear "gear skipping". For example, when the two-gear centrifugal block has not been "thrown out" to drive the first clutch control unit to rotate and achieve two-gear state adjustment, the three-gear centrifugal block has already been "thrown out" to drive the second clutch unit to rotate and enter the three-gear state. This causes the bicycle to skip from the first gear to the third gear without passing through the second gear, resulting in "gear skipping", which affects the riding experience of the rider.

[0101] In the embodiment, the first clutch unit 54 is connected to the control unit 53 in the form of a "bridge", so that the first clutch unit 54 and the second clutch unit 55 are connected to the same control unit 53. The control unit 53 is driven by the drive unit 51 to rotate different angles in the same direction, thereby respectively driving the first clutch unit 54 and the second clutch unit 55 to rotate, achieving adjustment of different gears. Before the second clutch unit 55 rotates, the first clutch unit 54 must rotate, thereby effectively avoiding "gear skipping" and better protecting the riding experience of the rider.

[0102] Meanwhile, the first clutch unit 54 is connected to the control unit 53 in the form of a "bridge". The first clutch unit 54 and the second clutch unit 55 are driven to rotate by different rotation angles of the control unit 53, making control more accurate and better protecting the reliability of gear shifting and further avoiding "gear skipping". Moreover, the structure of the clutch unit controlling the planetary gear train and the output mechanism is simpler, and the processing difficulty of the clutch unit is reduced.

[0103] Preferably, the first transmission unit 52 comprises a transmission unit body 521 and a control column 522, the driving unit 51 is connected with the transmission unit body 521, the control column 522 is connected with the transmission unit body 521, and the control column 522 is inserted into the control unit 53. Thus, when the driving unit 51 drives the first transmission unit 52 to rotate, the first transmission unit 52 drives the control unit 53 to rotate through the control column 522 inserted into the control unit 53, which is simple and compact in structure and can effectively drive the control unit 53 to rotate for gear shifting control.

[0104] Preferably, the control unit 53 comprises a first control unit 531 and a second control unit 532, the first control unit 531 is connected with the connecting arm 541, the second control unit 532 is connected with the second clutch unit 55, and the first transmission unit 52 at least partially extends into the first control unit 531 and the second control unit 532. When the first transmission unit 52 rotates to the first state, the first transmission unit 52 drives the first control unit 531 to rotate. When the first transmission unit 52 rotates to the second state, the first transmission unit 52 drives the second control unit 532 to rotate. That is, in the embodiment, the control unit 53 comprises two rotatable components, when the first transmission unit 52 rotates to the first state relative to the output mechanism 30, the first transmission unit 52 drives the first control unit 531 to rotate, thereby driving the first clutch unit 54 to rotate through the first control unit 531. When the first transmission unit 52 further rotates to the second state relative to the output mechanism 30, the first transmission unit 52 drives the second control unit 532 to rotate, thereby driving the second clutch unit 55 to rotate through the second control unit 532. By rotating different components and correspondingly driving the first clutch unit 54 and the second clutch unit 55 to rotate, control is more accurate and "over gear shifting" is better avoided.

[0105] Preferably, the first control unit 531 comprises a first mounting seat 5311 and a first elastic assembly 5312, and the connecting arm 541 is connected with the first mounting seat 5311. The first mounting seat 5311 is provided with a first sliding channel 5313 extending in the circumferential direction, and the first sliding channel 5313 comprises a first sliding member sliding channel 53131 and a first elastic member sliding channel 53132 which are in communication with each other.

[0106] The first elastic component 5312 comprises a first sliding piece 5314 and a first elastic piece 5315, the first elastic piece 5315 is arranged in the first elastic piece sliding channel 53132, one end of the first elastic piece 5315 is connected with the first mounting base 5311, and the other end of the first elastic piece 5315 is connected with the first sliding piece 5314. The first sliding piece 5314 is arranged in the first sliding piece sliding channel 53131 and extends out of the first sliding channel 5313 in the circumferential direction.

[0107] When the first transmission unit 52 rotates to the first state, the first transmission unit 52 drives the first sliding piece 5314 to slide along the first sliding channel 5313, so as to compress or stretch the first elastic piece 5315, and drive the first mounting base 5311 to rotate.

[0108] Preferably, the first elastic piece 5315 is sleeved on the first sliding piece 5314. Since the first elastic piece 5315 is sleeved on the first sliding piece 5314, the first sliding piece 5314 can apply force to the first elastic piece 5315 along the center, so that the first elastic piece 5315 is subjected to force more uniformly.

[0109] That is to say, in the embodiment, the first control unit 531 realizes the non-rigid connection between the first transmission unit 52 and the first clutch unit 54. When the first transmission unit 52 rotates, the first elastic component 5312 is first squeezed and pressed, and then the torque is transmitted to the first mounting base 5311 through the first elastic component 5312, and finally the first clutch unit 54 is driven to rotate.

[0110] It can be understood that in the prior art, the non-rigid connection between two components in the internal gearbox usually adopts a torsional spring, a tension spring, a volute spring or the like. When transmitting torque, the force is not uniform, and the torque cannot be well and quickly transmitted from the previous component to the next component, thereby affecting the quick shifting of the internal gearbox, and even possibly causing the internal gearbox to fail to shift, which greatly affects the riding experience of the rider.

[0111] In the embodiment, the first mounting base 5311 is arranged, the first sliding channel 5313 is arranged on the first mounting base 5311, and the first elastic component 5312 is a combined structure of the first sliding piece 5314 and the first elastic piece 5315. When transmitting torque between the first transmission unit 52 and the first clutch unit 54, the first transmission unit 52 first squeezes the first sliding piece 5314, and then applies force to the first elastic component 5312 through the first sliding piece 5314.

[0112] Meanwhile, the first sliding member 5314 can also move along the guide direction of the first sliding groove 5313, which can also better ensure the force application direction. When the first sliding member 5314 moves, the first elastic member 5315 can be correspondingly compressed or stretched, so as to apply force to the first mounting base 5311 again through the first elastic member 5315, so as to transmit the torque to the first clutch unit 54. Therefore, the whole structure can be more uniform in force when transmitting the torque, and the torque applied by the first transmission unit 52 can be quickly and well transmitted to the first clutch unit 54 in a flexible connection mode, so that the rapid and stable gear shifting of the internal derailleur can be realized, and the riding experience of the rider is improved.

[0113] Further, when the first elastic member 5315 is compressed or stretched under force, the first elastic member sliding groove 53132 can also guide the first elastic member 5315. Therefore, the whole structure can be more uniform in force when transmitting the torque, and the torque applied by the first transmission unit 52 can be quickly and well transmitted to the first clutch unit 54 in a flexible connection mode, so that the rapid and stable gear shifting of the internal derailleur can be realized, and the riding experience of the rider is improved.

[0114] Preferably, the first mounting base 5311 is also provided with a second sliding groove 5316 extending in the circumferential direction, and the second sliding groove 5316 comprises a second sliding member sliding groove 53161 and a second elastic member sliding groove 53162 which are in communication with each other.

[0115] The first control unit 531 also comprises a second elastic assembly 5317, and the second elastic assembly 5317 comprises a second sliding member 5318 and a second elastic member 5319. The second elastic member 5319 is arranged in the second elastic member sliding groove 53162, one end of the second elastic member 5319 is connected with the first mounting base 5311, and the other end of the second elastic member 5319 is connected with the second sliding member 5318. The second sliding member 5318 is arranged in the second sliding member sliding groove 53161 and extends out of the second sliding groove 5316 in the circumferential direction.

[0116] The second sliding member 5318 is used to abut against the first transmission unit 52, and when the first transmission unit 52 and the output mechanism 30 rotate relative to each other, the second elastic member 5319 is stretched or compressed, so that the second sliding member 5318 slides towards the rotation direction of the first transmission unit 52.

[0117] Preferably, the second elastic member 5319 is sleeved on the second sliding member 5318.

[0118] That is to say, the first control unit 531 is also reversely provided with a flexible connecting piece. In the initial state, the first transmission unit 52 is in contact with the second sliding piece 5318, and the second elastic piece 5319 is in a deformed state by the force applied through the second sliding piece 5318, so that the first transmission unit 52 is continuously stressed and in a dynamic balance state. When the first transmission unit 52 is driven to rotate, the second elastic piece 5319 can restore its state by its elastic force, so that the second sliding piece 5318 synchronously slides to the rotating direction of the first transmission unit 52. When the first transmission unit 52 is reset after the driving force disappears, the first transmission unit 52 can again abut against and press the second sliding piece 5318, so as to apply force to the second elastic piece 5319 through the second sliding piece 5318, and finally drive the first mounting base 5311 to restore the original rotating state, so as to realize the reset of the overall device. Similarly, through the cooperation between the second elastic assembly 5317 and the second sliding groove 5316, the stress can be more uniform, and the overall structure can better and faster realize the reset.

[0119] Preferably, the first elastic piece 5315 includes a first spring 53151 and a first sleeve 53152, one end of the first spring 53151 is connected with the first mounting base 5311, and the other end of the first spring 53151 is connected with the first sliding piece 5314 through the first sleeve 53152. Thus, the first sleeve 53152 can better apply force to the first spring 53151. Moreover, the first sleeve 53152 cooperates with the first elastic piece sliding groove 53132 to guide the moving direction of the first elastic piece 5315 when the first spring 53151 is deformed under stress, so as to better guarantee the uniformity of stress in the entire transmission process, and better and faster transmit the torque.

[0120] The second elastic piece 5319 includes a second spring 53191 and a second sleeve 53192, one end of the second spring 53191 is connected with the first mounting base 5311, and the other end of the second spring 53191 is connected with the second sliding piece 5318 through the second sleeve 53192. Thus, the second sleeve 53192 can better apply force to the second spring 53191. Moreover, the second sleeve 53192 cooperates with the second elastic piece sliding groove 53162 to guide the moving direction of the second elastic piece 5319 when the second spring 53151 is deformed under stress, so as to better guarantee the uniformity of stress in the entire transmission process, and better and faster transmit the torque.

[0121] Preferably, the second control unit 532 comprises a second mounting base 5321 and a third elastic assembly 5322, and the second clutch unit 55 is connected with the second mounting base 5321. The second mounting base 5321 is provided with a third sliding groove 5323 extending in the circumferential direction, and the third sliding groove 5323 comprises a third sliding member sliding groove 53231 and a third elastic member sliding groove 53232 which are in communication with each other.

[0122] The third elastic assembly 5322 comprises a third sliding member 5324 and a third elastic member 5325, the third elastic member 5325 is arranged in the third elastic member sliding groove 53232, one end of the third elastic member 5325 is connected with the second mounting base 5321, and the other end of the third elastic member 5325 is connected with the third sliding member 5324. The third sliding member 5324 is arranged in the third sliding member sliding groove 53231 and extends out of the third sliding groove 5323 in the circumferential direction.

[0123] When the first transmission unit 52 rotates from the first state to the second state, the first transmission unit 52 drives the third sliding member 5324 to slide along the third sliding groove 5323 to compress or stretch the third elastic member 5325, so as to rotate the second mounting base 5321.

[0124] Preferably, the third elastic member 5325 is sleeved on the third sliding member 5324.

[0125] That is to say, in the embodiment, the non-rigid connection between the first transmission unit 52 and the second clutch unit 55 is realized by the second control unit 532. When the first transmission unit 52 rotates, the third elastic assembly 5322 is first slid and pressed, and then the torque is transmitted to the second mounting base 5321 through the third elastic assembly 5322, and finally the second clutch unit 55 is driven to rotate. Similarly, the entire structure of the second control unit 532 can make the stress more uniform when transmitting torque, and can transmit the torque applied by the first transmission unit 52 to the second clutch unit 55 through flexible connection in a good and fast manner, so as to realize the rapid and stable gear shifting of the internal transmission, and improve the riding experience of the rider.

[0126] Preferably, the second mounting base 5321 is further provided with a fourth sliding groove 5326 extending in the circumferential direction, and the fourth sliding groove 5326 comprises a fourth sliding member sliding groove 53261 and a fourth elastic member sliding groove 53262 which are in communication with each other.

[0127] The second control unit 532 further comprises a fourth elastic assembly 5327, which comprises a fourth sliding piece 5328 and a fourth elastic piece 5329. The fourth elastic piece 5329 is arranged in a fourth elastic piece sliding channel 53262, one end of the fourth elastic piece 5329 is connected with the second mounting seat 5321, and the other end of the fourth elastic piece 5329 is connected with the fourth sliding piece 5328. The fourth sliding piece 5328 is arranged in a fourth sliding piece sliding channel 53261 and extends out of the fourth sliding channel 5326 in the circumferential direction.

[0128] The fourth sliding piece 5328 is used to abut against the first transmission unit 52, and when the first transmission unit 52 and the output mechanism 30 rotate relative to each other, the fourth elastic piece 5329 is stretched or compressed, so that the fourth sliding piece 5328 slides towards the rotation direction of the first transmission unit 52.

[0129] Preferably, the fourth elastic piece 5329 is sleeved on the fourth sliding piece 5328.

[0130] That is to say, the second control unit 532 is also reversely provided with a flexible connecting piece. In the initial state, the first transmission unit 52 is in contact with the fourth sliding piece 5328, and the fourth elastic piece 5329 is in a deformed state through the force applied by the fourth sliding piece 5328, so that the first transmission unit 52 is continuously stressed and is in a dynamic balance state. When the first transmission unit 52 is driven to rotate, the fourth elastic piece 5329 can restore its state through its elastic force, so that the fourth sliding piece 5328 slides synchronously towards the rotation direction of the first transmission unit 52. When the driving force acting on the first transmission unit 52 disappears, the first transmission unit 52 is reset, and the first transmission unit 52 can abut against and press the fourth sliding piece 5328 again, so as to apply force to the fourth elastic piece 5329 through the fourth sliding piece 5328, and finally drive the second mounting seat 5321 to restore the original rotation state, so as to realize the reset of the overall device. Similarly, through the cooperation between the fourth elastic assembly 5327 and the fourth sliding channel 5326, the stress can be more uniform, and the overall structure can better and faster realize the reset.

[0131] Preferably, the third elastic member 5325 comprises a third spring 53251 and a third sleeve 53252, one end of the third spring 53251 is connected with the second mounting base 5321, and the other end of the third spring 53251 is connected with the third sliding member 5324 through the third sleeve 53252. Thus, the third sleeve 53252 can better apply force to the third spring 53251. Moreover, the third sleeve 53252 can better cooperate with the third elastic member sliding groove 53232 to guide the moving direction of the third elastic member 5325 when the third spring 53251 is deformed under stress, thus better ensuring the uniformity of stress in the entire transmission process and better and faster transmitting the torque.

[0132] The fourth elastic member 5329 comprises a fourth spring 53291 and a fourth sleeve 53292, one end of the fourth spring 53291 is connected with the second mounting base 5321, and the other end of the fourth spring 53291 is connected with the fourth sliding member 5328 through the fourth sleeve 53292. Thus, the fourth sleeve 53292 can better apply force to the fourth spring 53291. Moreover, the fourth sleeve 53292 can better cooperate with the fourth elastic member sliding groove 53262 to guide the moving direction of the fourth elastic member 5329 when the fourth spring 53291 is deformed under stress, thus better ensuring the uniformity of stress in the entire transmission process and better and faster transmitting the torque.

[0133] Specifically, in the embodiment, the first spring 53151, the second spring 53191, the third spring 53251 and the fourth spring 53291 all adopt compression springs. Of course, in other embodiments, the first spring 53151, the second spring 53191, the third spring 53251 and the fourth spring 53291 can also adopt extension springs. The first sliding member 5314, the second sliding member 5318, the third sliding member 5324 and the fourth sliding member 5328 all adopt steel wires. Of course, in other embodiments, the first sliding member 5314, the second sliding member 5318, the third sliding member 5324 and the fourth sliding member 5328 can also adopt other materials.

[0134] Specifically, the first mounting seat 5311 and the second mounting seat 5321 are both provided with a through groove extending in the circumferential direction, and the first transmission unit 52 is correspondingly inserted into the through groove. The end of the first sliding piece 5314, the second sliding piece 5318, the third sliding piece 5324 and the fourth sliding piece 5328 is bent to form an abutting portion for abutting against the first transmission unit 52, so that when the first transmission unit 52 rotates, the first sliding piece 5314, the second sliding piece 5318, the third sliding piece 5324 and the fourth sliding piece 5328 can slide along the through groove, and then abut against the abutting portion of the corresponding sliding piece, thereby driving the corresponding sliding piece to slide. The first mounting seat 5311 and the second mounting seat 5321 are both provided with a blocking block corresponding to each abutting portion, so that the first sliding piece 5314, the second sliding piece 5318, the third sliding piece 5324 and the fourth sliding piece 5328 can be blocked by the blocking block, thereby limiting the movement stroke of the first sliding piece 5314, the second sliding piece 5318, the third sliding piece 5324 and the fourth sliding piece 5328.

[0135] Preferably, the gear shift control mechanism 50 can also be provided with a mounting seat cover, so that the first mounting seat 5311 and the second mounting seat 5321 can be covered by the mounting seat cover, and the first sliding channel 5313, the second sliding channel 5316, the third sliding channel 5323 and the fourth sliding channel 5326 can be correspondingly closed in the axial direction, thereby preventing the first elastic component 5312, the second elastic component 5317, the third elastic component 5322 and the fourth elastic component 5327 from being pulled out.

[0136] Preferably, the second clutch unit 55 is provided with a first connecting arm avoiding groove 551, the first connecting arm avoiding groove 551 extends through the second clutch unit 55 in the axial direction, and the first connecting arm avoiding groove 551 extends in the circumferential direction on the second clutch unit 55, and the connecting arm 541 can slide in the first connecting arm avoiding groove 551 in the circumferential direction. Therefore, the first connecting arm avoiding groove 551 can better avoid the connecting arm 541, and when the connecting arm 541 is driven to rotate by the control unit 53, the connecting arm 541 will slide in the first connecting arm avoiding groove 551 and will not directly touch the second clutch unit 55, thereby ensuring that the second clutch unit 55 will not rotate at this time. Better avoid "overlapping".

[0137] Preferably, the output mechanism 30 is provided with a second connecting arm avoiding groove 31 corresponding to the connecting arm 541, the second connecting arm avoiding groove 31 extends along the circumference on the output mechanism 30, and the connecting arm 541 can slide along the circumference in the second connecting arm avoiding groove 31. Thus, the second connecting arm avoiding groove 31 can better avoid the connecting arm 541, when the connecting arm 541 is driven to rotate by the control unit 53, the connecting arm 541 will slide in the second connecting arm avoiding groove 31, and will not directly touch the output mechanism, avoiding the interference between the first clutch unit 54 and the output mechanism 30, and better guaranteeing the stability of gear shifting.

[0138] Preferably, the connecting arm 541 is provided with at least two, all the connecting arms 541 are distributed on the first clutch unit 54 along the circumference at equal intervals, and each connecting arm 541 is connected with the control unit 53 along the axis through the second clutch unit 55. Thus, the connection reliability between the first clutch unit 54 and the control unit 53 can be better guaranteed, and the first clutch unit 54 can be more balanced when the first transmission unit 52 drives the first clutch unit 54 to rotate. Specifically, in the embodiment, the connecting arm 541 is provided with two, and the central angle between the two connecting arms 541 is 180°.

[0139] Preferably, the control unit 53 is provided with a connecting lug 533, and in the embodiment, the connecting lug 533 is specifically provided on the first mounting seat 5311. The connecting arm 541 is inserted into the connecting lug 533, and each connecting arm 541 is connected with one connecting lug 533, thereby better guaranteeing the connection reliability between the first clutch unit 54 and the control unit 53. Specifically, in the embodiment, the connecting lug 533 is provided with two, and the two connecting lugs 533 are provided corresponding to the two connecting arms 541.

[0140] Preferably, the driving unit 51 is a centrifugal block, the gear shifting control mechanism 50 further comprises a centrifugal block mounting seat 56 and an elastic reset member 57, the centrifugal block mounting seat 56 is connected with the output mechanism 30, and the driving unit 51 is rotatably mounted on the centrifugal block mounting seat 56. The elastic reset member 57 is connected with the driving unit 51, and is used to provide restoring force for the driving unit 51 through its elastic force, so as to restore and maintain the state of the driving unit 51.

[0141] That is, in the embodiment, the driving force of the first transmission unit 52 is provided by the centrifugal block, and the driving unit 51 can rotate relative to the output mechanism 30 after being stressed, thereby driving the first transmission unit 52 to rotate.

[0142] When the output mechanism 30 reaches a certain speed during the bicycle travels, the driving unit 51 is "flung out" (where "flung out" refers to the centrifugal block being rotated away from the output mechanism 30 under the centrifugal force) due to the centrifugal force. Thus, when the driving unit 51 is "flung out", the first transmission unit 52 is driven to rotate, thereby changing the rotation state of the control unit 53, changing the power transmission path in the automatic internal derailleur 100, and achieving gear shifting of the automatic internal derailleur 100.

[0143] Specifically, in the present embodiment, when the driving unit 51 is in the initial state, the automatic internal derailleur 100 is in the "first gear" state; when the driving unit 51 is subjected to a certain centrifugal force, the driving unit 51 will rotate to a certain angle and partially "flung out", thereby driving the first transmission unit 52 to rotate to the first state, and the automatic internal derailleur 100 can be switched from the "first gear" state to the "second gear" state. When the driving unit 51 is subjected to a larger centrifugal force, the driving unit 51 will rotate to a larger angle and completely "flung out", thereby driving the first transmission unit 52 to rotate to the second state, and the automatic internal derailleur 100 can be switched from the "second gear" state to the "third gear" state. Of course, in other embodiments, the automatic internal derailleur 100 can have any number of gears, and in the present embodiment, the automatic internal derailleur 100 with three gears is taken as an example for illustration.

[0144] When the driving unit 51 is subjected to a centrifugal force and starts to "flung out", it will start to drive the first transmission unit 52 to rotate. When the first transmission unit 52 rotates to a certain angle, it will first touch the first sliding member 5314. Thus, when the driving unit 51 continues to "flung out", it will drive the first sliding member 5314 to move, thereby driving the first clutch unit 54 to rotate. When the driving unit 51 rotates to a partially "flung out" state, the first clutch unit 54 will combine the first planetary gear train 42 with the output mechanism 30 at this time. When the driving unit 51 continues to be subjected to a larger centrifugal force, the driving unit 51 will continue to "flung out", and then touch the third sliding member 5324, thereby driving the third sliding member 5324 to move, thereby driving the second clutch unit 55 to rotate. When the driving unit 51 rotates to a completely "flung out" state, the second clutch unit 55 will combine the second planetary gear train 43 with the output mechanism 30 at this time.

[0145] Of course, in other embodiments, the driving unit 51 can also adopt other structures that can realize the rotation of the first transmission unit 52, such as an electric control device, so as to drive the first transmission unit 52 to rotate in an electric control manner.

[0146] The elastic reset member 57 refers to a component that can be elastically deformed under force and can return to the initial state when the force decreases or disappears. The restoring and maintaining of the driving unit 51 refers to that the driving unit 51 has a tendency to rotate to the initial position, so that when the centrifugal force acting on the driving unit 51 decreases or disappears, the driving unit 51 can be driven to rotate to the initial position by the restoring force, and the driving unit 51 can also be maintained in the state by the restoring force after the rotation is completed. That is, the elastic reset member 57 is used to provide a force opposite to the centrifugal force to the driving unit 51, so that the driving unit 51 can be completely reset or partially reset by the elastic reset member 57, so as to realize the recovery of the gear. Therefore, when the driving unit 51 is subjected to the centrifugal force, the centrifugal force must overcome the restoring force of the elastic reset member 57 acting on the driving unit 51, so that the driving unit 51 can be "thrown out" outward, and then the control unit 53 can be driven to rotate to the position, so as to realize the gear shifting. It should be noted that the restoring force of the elastic reset member 57 acting on the driving unit 51 can be directly or indirectly applied to the driving unit 51. That is, only the restoring force provided by the elastic reset member 57 can act on the driving unit 51. Moreover, the restoring force can drive the driving unit 51 to completely return to the initial position, or the restoring force can drive the driving unit 51 to partially return to the initial position. That is, only the restoring force can drive the driving unit 51 to rotate in the opposite direction, so as to realize the gear shifting.

[0147] Preferably, the automatic derailleur 100 further comprises an adjusting mechanism 60, the adjusting mechanism 60 comprising an adjusting ring gear 61 and an adjusting gear 62, the adjusting ring gear 61 being connected with the elastic return member 57, and the adjusting ring gear 61 being provided with a toothed portion 611 extending in the circumferential direction. That is, the adjusting ring gear 61 is provided with the toothed portion 611, and the toothed portion 611 extends in the circumferential direction of the adjusting ring gear 61. The adjusting gear 62 is engaged with the toothed portion 611, and the adjusting gear 62 can drive the adjusting ring gear 61 to rotate, so as to change the deformation state of the elastic return member 57, so as to change the restoring force applied to the driving unit 51 by the elastic return member 57. That is, the adjusting gear 62 is used to provide driving force to the adjusting ring gear 61, so that the adjusting ring gear 61 rotates, so that the adjusting ring gear 61 applies force to the elastic return member 57, so that the elastic return member 57 deforms, and the deformation state of the elastic return member 57 is changed. So that the elastic return member 57 changes the restoring force applied to the driving unit 51, so that the driving unit 51 can be "thrown out" by a smaller centrifugal force (or the driving unit 51 needs to be "thrown out" by a larger centrifugal force). That is, in the embodiment, the adjusting ring gear 61 can rotate relative to the elastic return member 57, so as to change the deformation state of the elastic return member 57, and then change the restoring force applied to the driving unit 51 by the elastic return member 57, so that the automatic derailleur 100 can realize the "throwing out" of the driving unit 51 at different speeds according to the actual needs, and meet the riding needs of different riders. The adjusting gear 62 is used to provide driving force to the adjusting ring gear 61 to drive the adjusting ring gear 61 to operate.

[0148] It can be understood that in the prior art automatic derailleur, the elastic return member is directly connected to the hub, and the restoring force applied to the centrifugal block by the elastic return member is constant, so that each time the centrifugal block is "thrown out" and the automatic derailleur is shifted, it is realized at the same speed. Different riders have different needs for shifting, such as some riders who need to "throw out" the centrifugal block at a relatively low speed to realize shifting; and some riders who need to "throw out" the centrifugal block at a relatively high speed to realize shifting. The prior art automatic derailleur cannot meet the needs of these riders, and has limitations.

[0149] The automatic derailleur 100 provided in the embodiment is connected with the elastic return member 57 through the adjusting ring gear 61 and can drive the adjusting ring gear 61 to rotate through the adjusting gear 62. Therefore, the rider can apply driving force to the adjusting ring gear 61 through the adjusting gear 62 according to actual needs, so as to "compress" or "release" the elastic return member 57, thereby changing the restoring force applied by the elastic return member 57 to the driving unit 51 (or in other words, changing the resistance applied by the elastic return member 57 to the driving unit 51). When riding a bicycle, the driving unit 51 can be "thrown out" at a relatively low speed, or the driving unit 51 can be "thrown out" at a relatively high speed. The automatic derailleur 100 can adjust the elastic force of the elastic return member 57, thereby better meeting the different riding needs of the rider.

[0150] In addition, in the embodiment, the adjusting mechanism 60 adopts the structure of the adjusting ring gear 61 and the adjusting gear 62, so that the overall structure is simpler, the stability during adjustment is better, and the adjustment of the elastic return member 57 is better guaranteed. At the same time, the adjusting ring gear 61 and the adjusting gear 62 can be interlocked, which can further guarantee the stability of the adjustment of the elastic return member 57 and further improve the riding experience of the rider.

[0151] Specifically, in the embodiment, the tooth portion 611 is arranged on the inner side of the adjusting ring gear 61, that is, the adjusting ring gear 61 is an inner ring gear structure.

[0152] Preferably, the output mechanism 30 is provided with a mounting hole, the mounting hole penetrates the output mechanism 30, and the adjusting gear 62 is in sealing engagement with the hole wall of the mounting hole. The sealing engagement of the adjusting gear 62 with the hole wall of the mounting hole means that the outer wall of the adjusting gear 62 abuts against the hole wall of the mounting hole, thereby sealing the mounting hole, so that external pollutants cannot enter the inside of the automatic derailleur 100 through the mounting hole, and the stability and service life of the automatic derailleur 100 are better guaranteed. At the same time, the mounting hole also facilitates the rider to control and adjust the adjusting gear 62.

[0153] Specifically, in the embodiment, the output mechanism 30 includes a hub body 32, an end cover 33 mounted at one end of the hub body 32, and an inner bushing 34 mounted on the inner side of the hub body 32. The mounting hole is arranged on the end cover 32, and the mounting hole penetrates the end cover 32 in the axial direction. The second connecting arm avoiding groove 31 is arranged on the inner bushing 34.

[0154] Preferably, the driving member 62 comprises a gear portion 621, a sealing portion 622 and an adjusting portion 623 connected in sequence, the gear portion 621 is engaged with the adjusting gear ring 61, the sealing portion 622 is sealingly matched with the hole wall of the mounting hole, and the adjusting portion 623 is provided with an adjusting hole 6231 on the surface away from the gear portion 621. Thus, the cooperation with the external tool is facilitated through the adjusting portion 623 and the adjusting hole 6231, and the rider is further facilitated to control and adjust the driving member 62. Specifically, in the embodiment, the adjusting hole 6231 is an internal hexagonal hole. Of course, in other embodiments, the shape of the adjusting hole 6231 can also be any other desired shape, such as a cross shape, a straight line shape, etc.

[0155] Preferably, the gear shift control mechanism 50 further comprises a second transmission unit 58, and the second transmission unit 58 is synchronously connected with the first transmission unit 52. Wherein, the second transmission unit 58 is connected with the first transmission unit 52, and the second transmission unit 58 and the first transmission unit 52 can synchronously rotate. Thus, when any one of the synchronous members rotates, the other synchronous member can be simultaneously driven to rotate synchronously.

[0156] In the axial direction, the first transmission unit 52 and the second transmission unit 58 are located on opposite sides of the driving unit 51, and the first transmission unit 52 is located on the side close to the gear shifting mechanism 40. The two ends of the elastic reset member 57 are connected with the adjusting gear ring 61 and the second transmission unit 58, respectively.

[0157] It can be understood that in the prior art automatic internal gearbox, due to the limited radial space inside the output mechanism, the assembly process of the automatic internal gearbox is very difficult, which also affects the position accuracy between the components after the final assembly is completed, and causes the adjustment of the restoring force of the centrifugal block by the adjustment mechanism to be very difficult; at the same time, after the assembly is completed, the adjustment mechanism is located inside the gear shift control mechanism, which is far away from the external space position, which also makes it very inconvenient for the rider to control and adjust the adjustment mechanism, and further causes the adjustment of the restoring force of the centrifugal block by the adjustment mechanism to be very difficult.

[0158] The automatic internal gearbox 100 provided in the embodiment is provided with the first transmission unit 52 and the second transmission unit 58 on the two sides of the driving unit 51, the first transmission unit 52 extends into the control unit 53, and the second transmission unit 58 is connected with the elastic return member 57. Thus, the control of the control unit 53 and the control of the restoring force borne by the driving unit 51 are located on the opposite sides of the driving unit 51, the axial space of the output mechanism 30 is better utilized, the components can have more installation space in the axial direction, the space required in the radial direction is reduced, the assembly difficulty is effectively reduced, and the position precision between the components after installation can be better guaranteed. Moreover, during installation, the components of the gear shift control mechanism 50 and the adjusting mechanism 60 can be modularly and step by step installed, and the installation difficulty can be further reduced. For example, the control unit 53, the first transmission unit 52, the centrifugal block mounting seat 56, the driving unit 51, the second transmission unit 58, the elastic return member 57, and the adjusting mechanism 60 can be step by step sleeved on the output mechanism 30 through the installation shaft 10. Moreover, the elastic return member 57 is connected with the second transmission unit 58, so that the adjusting mechanism 60 can be arranged outside the gear shift control mechanism 50, the adjusting mechanism 60 can be closer to the end surface of the output mechanism 30, is closer to the external space position, and the rider is facilitated to control and adjust the adjusting mechanism 60. During adjustment, the second transmission unit 58 is adjusted only through the adjusting mechanism 60, so that the restoring force borne by the driving unit 51 can be adjusted, and the adjusting mechanism 60 is facilitated to adjust the restoring force borne by the driving unit 51.

[0159] The centrifugal block mounting seat 56 includes a first centrifugal block mounting seat 561 and a second centrifugal block mounting seat 562 connected with the output mechanism 30. In the axial direction, the first centrifugal block mounting seat 561 and the second centrifugal block mounting seat 562 are located on the opposite sides of the driving unit 51, and the first centrifugal block mounting seat 561 is located on the side close to the gear shift mechanism 40. The adjusting gear 62 is rotatably installed on the second centrifugal block mounting seat 562.

[0160] That is to say, in the embodiment, the centrifugal block mounting seat 56 is provided with two, and the two centrifugal block mounting seats 56 are located at opposite sides of the driving unit 51, and the adjusting gear 62 is rotatably mounted on the centrifugal block mounting seat 56 located at the outer side. Thus, the installation of the adjusting gear 62 is facilitated, and the reliability of the position of the adjusting gear 62 is ensured. Meanwhile, in assembly, the second centrifugal block mounting seat 562, the elastic reset member 57, the second transmission unit 58 and the adjusting mechanism 60 can be assembled into an integral module and then mounted into the output mechanism 30, so as to further reduce the assembly difficulty.

[0161] It can be understood that, in the embodiment, by providing the first centrifugal block mounting seat 561 and the second centrifugal block mounting seat 562, more assembly space is provided, and the possibility of providing more functional components is provided. Meanwhile, the assembly difficulty is reduced, the assembly precision is improved, and the normal operation of the automatic manual transmission 100 is not affected.

[0162] Preferably, the driving unit 51 is rotatably mounted on the first centrifugal block mounting seat 561 and the second centrifugal block mounting seat 562 through a centrifugal block rotating shaft 511, and the driving unit 51 is connected with the first transmission unit 52 and the second transmission unit 58 through a centrifugal block output shaft 512. Thus, when the driving unit 51 is subjected to a centrifugal force of a certain size, the driving unit 51 can rotate around the centrifugal block rotating shaft 511. Meanwhile, the driving unit 51 can drive the centrifugal block output shaft 512 to swing circumferentially, so that the first transmission unit 52 and the second transmission unit 58 can be driven to rotate synchronously through the centrifugal block output shaft 512. Through the structure, the driving of the driving unit 51 to the first transmission unit 52 and the second transmission unit 58 can be better ensured, and the reliability of the installation of the driving unit 51 can be better ensured. In the embodiment, the first transmission unit 52 and the second transmission unit 58 are synchronously connected through the centrifugal block output shaft 512, so that the overall structure is simpler, and the synchronous rotation between the first transmission unit 52 and the second transmission unit 58 can be better ensured.

[0163] Specifically, the driving unit 51 is provided with a centrifugal block mounting hole 513, and the centrifugal block rotating shaft 511 is correspondingly arranged at the centrifugal block mounting hole 513. In addition, the driving unit 51 is also provided with a centrifugal block output hole 514, and the centrifugal block output shaft 512 is correspondingly arranged at the centrifugal block output hole 514. Thus, when the driving unit 51 is rotated by a certain size of centrifugal force, the centrifugal block output shaft 512 can be forced by the hole wall of the centrifugal block output hole 514, so as to drive the centrifugal block output shaft 512 to swing along the circumference, and then drive the first transmission unit 52 and the second transmission unit 58 to rotate synchronously.

[0164] Specifically, in the embodiment, the automatic internal gearbox 100 is provided with six driving units 51, so that the six driving units 51 can operate synchronously, and each driving unit 51 is correspondingly provided with the centrifugal block rotating shaft 511 and the centrifugal block output shaft 512. Of course, in other embodiments, the centrifugal blocks arranged in the automatic internal gearbox 100 can be more or less. In the embodiment, the first transmission unit 52 and the second transmission unit 58 can be more stably controlled by six centrifugal blocks, so as to better guarantee the stability of gear shifting.

[0165] Preferably, the first centrifugal block mounting seat 561 is provided with a first avoiding groove 5611 extending along the circumference to avoid the centrifugal block output shaft 512; and the second centrifugal block mounting seat 562 is provided with a second avoiding groove 5621 extending along the circumference to avoid the centrifugal block output shaft 512. Thus, the centrifugal block output shaft 512 can be well avoided by the first avoiding groove 5611 and the second avoiding groove 5621, so as to be arranged at a position closer to the center along the radial direction, so that the overall structure is more compact.

[0166] Preferably, the second centrifugal block mounting seat 562 is provided with a first suction accessory 5622, and the second transmission unit 58 is provided with a second suction accessory 581. The first suction accessory 5622 is used to suck the second suction accessory 581, so as to maintain the state of the second transmission unit 58 after rotation. That is, the second centrifugal block mounting seat 562 and the second transmission unit 58 are provided with corresponding suction accessories. When the second transmission unit 58 is rotated under the driving of the driving unit 51, the second centrifugal block mounting seat 562 and the second transmission unit 58 can provide additional suction force through the corresponding suction accessories, so as to maintain the state of the second transmission unit 58 after rotation, so that the driving unit 51 can be maintained, so that the gear position can be better maintained after gear shifting, and the stability of the gear position after gear shifting is guaranteed.

[0167] Preferably, the first suction member 5622 comprises a first elastic passive suction member 56221 and a second passive suction member 56222 arranged in a circumferential staggered manner, i.e. the first elastic passive suction member 56221 and the second passive suction member 56222 are arranged at different positions in the circumferential direction of the second centrifugal block mounting seat 562; the second suction member 581 comprises a first magnetic suction member 5811 and a second magnetic suction member 5812 arranged in a circumferential staggered manner, i.e. the first magnetic suction member 5811 and the second magnetic suction member 5812 are arranged at different positions in the circumferential direction of the second transmission unit 58. The first elastic passive suction member 56221 is used to adsorb the first magnetic suction member 5811 to maintain the state of the second transmission unit 58 after rotation, so that the driving unit 51 maintains the first state. The second passive suction member 56222 is used to adsorb the second magnetic suction member 5812 to maintain the state of the second transmission unit 58 after rotation, so that the driving unit 51 maintains the second state.

[0168] When the driving unit 51 is partially "thrown out", at this time, the automatic manual transmission 100 is in the "second gear" state, the first magnetic suction member 5811 and the first elastic passive suction member 56221 are correspondingly adsorbed by magnetic force, so that the automatic manual transmission 100 is kept in the "second gear" state. When the driving unit 51 is further rotated to be completely "thrown out" due to the further increase of the centrifugal force, at this time, the automatic manual transmission 100 is in the "third gear" state, the second magnetic suction member 5812 and the second passive suction member 56222 are correspondingly adsorbed by magnetic force, so that the automatic manual transmission 100 is kept in the "third gear" state. Through the cooperation between the first suction member 5622 and the second suction member 581, the driving unit 51 can be more stably kept in the "second gear" or "third gear" position, and the gear of the automatic manual transmission 100 is more accurate. It should be noted that in the embodiment, the first suction member 5622 is made of iron, and the second suction member 581 is made of magnet. Of course, in other embodiments, the first suction member 5622 can be made of magnet, and the second suction member 581 can be made of iron, and the adsorption between the first suction member 5622 and the second suction member 581 can also be achieved. Moreover, the first suction member 5622 or the second suction member 581 is not limited to iron, and other materials that can be adsorbed by magnet can also be used. That is, as long as the first suction member 5622 and the second suction member 581 can generate adsorption force, the gear of the automatic manual transmission 100 can be more accurate. Specifically, in the embodiment, the first elastic passive suction member 56221 is a spring assembly, when the centrifugal force of the driving unit 51 increases, the first magnetic suction member 5811 can apply force to the first elastic passive suction member 56221, compress the first elastic passive suction member 56221, and move the first elastic passive suction member 56221, so that the first elastic passive suction member 56221 does not affect the automatic manual transmission 100 to change to the "third gear" state.

[0169] Preferably, in the embodiment, the first elastic passive suction member 56221 is also a combination structure of a sliding member, a spring and a sleeve, and the second centrifugal block mounting seat 562 is provided with a sliding channel corresponding to the first elastic passive suction member 56221.

[0170] Preferably, the shift control mechanism 50 further comprises a second centrifugal block mounting seat cover. In the axial direction, the second centrifugal block mounting seat cover covers the side of the second centrifugal block mounting seat 562 where the slide is formed, so as to limit the first elastic passive suction accessory 56221 in the slide. Thus, the second centrifugal block mounting seat cover can better limit the axial direction of the first elastic passive suction accessory 56221, so as to avoid the first elastic passive suction accessory 56221 from being pulled out of the slide.

[0171] Specifically, the second transmission unit 58 is provided with two magnet mounting positions 582, the first magnetic suction accessory 5811 and the second magnetic suction accessory 5812 are correspondingly mounted at the two magnet mounting positions 582, and the second transmission unit 58 is further provided with a reset member mounting position 583, and the elastic reset member 57 is correspondingly mounted at the reset member mounting position 583. The second centrifugal block mounting seat 562 is provided with an iron member mounting position 5623, and the second passive suction accessory 56222 is correspondingly mounted at the iron member mounting position 5623.

[0172] Preferably, the elastic reset member 57 is a volute spring, so as to better provide the driving unit 51 with the restoring force. Of course, in other embodiments, the elastic reset member 57 can also adopt other required elastic structures, such as a torsion spring.

[0173] It should be noted that the clutch 41, the first clutch unit 54 and the second clutch unit 55 in the embodiment all adopt a roller type clutch. Of course, in other embodiments, other types of clutches can also be adopted, such as a pawl type, a wedge block type, a combination of a pawl type and a roller type, etc.

[0174] Embodiment Two

[0175] The embodiment also provides a bicycle, which comprises a bicycle body and an automatic internal derailleur, and the automatic internal derailleur can be the automatic internal derailleur 100. The automatic internal derailleur is installed on a driving wheel of the bicycle body. It should be noted that the bicycle can be a traditional bicycle, such as a traditional two-wheeled bicycle, and the driving force is output to the rear wheel by the rider through the pedal. The automatic internal derailleur can be specifically installed at the rear wheel of the traditional bicycle. Of course, the bicycle can also be a power-assisted bicycle, that is, a bicycle on which a device for providing additional power can be installed, and the bicycle can reduce the riding difficulty of the rider through the additional power source. Specifically, the electric power-assisted bicycle can be assisted by additional electric energy. Of course, the power source of the power-assisted bicycle is not limited to electric energy, and can also be other forms of power source. At the same time, the number of wheels of the bicycle is not limited to two, and the number of wheels of the bicycle can also be selected according to actual needs. Even the bicycle can also be an electric bicycle, and is not limited to a two-wheeled bicycle.

[0176] The above only describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the inventive concept, and these improvements are within the protection scope of the present application.

Claims

1. An automatic planetary gear transmission, characterized in that The transmission comprises a mounting shaft, an input mechanism, an output mechanism, a gear shifting mechanism and a gear shifting control mechanism; The input mechanism and the output mechanism are rotatably mounted on the mounting shaft; The gear shifting mechanism is mounted on the mounting shaft, and comprises at least a clutch, a first planetary gear train and a second planetary gear train, the clutch combining the input mechanism and the output mechanism; The gear shifting control mechanism comprises a driving unit, a first transmission unit, a control unit, a first clutch unit and a second clutch unit, the driving unit being connected with the output mechanism, the first transmission unit being connected with the driving unit and at least partially extending into the control unit; In the axial direction, the second clutch unit is located between the first clutch unit and the control unit, the second clutch unit being connected with the control unit, and the first clutch unit being provided with a connecting arm, the connecting arm extending through the second clutch unit in the axial direction and being connected with the control unit; The driving unit can drive the first transmission unit to rotate relative to the output mechanism in a first direction to a first state, thereby driving the control unit to rotate so as to drive the first clutch unit to rotate and combine the first planetary gear train and the output mechanism; The driving unit can also drive the first transmission unit to further rotate relative to the output mechanism in the first direction to a second state, thereby driving the control unit to further rotate so as to drive the second clutch unit to rotate and combine the second planetary gear train and the output mechanism.

2. The automatic derailleur according to claim 1, characterized in that, The control unit comprises a first control unit and a second control unit, the first control unit being connected with the connecting arm, and the second control unit being connected with the second clutch unit, the first transmission unit at least partially extending into the first control unit and the second control unit; When the first transmission unit rotates to the first state, the first transmission unit drives the first control unit to rotate; When the first transmission unit rotates to the second state, the first transmission unit drives the second control unit to rotate.

3. The automatic derailleur according to claim 2, characterized in that, The first control unit comprises a first mounting seat and a first elastic component, the connecting arm being connected with the first mounting seat; The first mounting seat is provided with a first slide channel extending in the circumferential direction, the first slide channel comprising a first sliding member slide channel and a first elastic member slide channel which are in communication with each other; The first elastic component comprises a first sliding member and a first elastic member, the first elastic member being arranged in the first elastic member slide channel, one end of the first elastic member being connected with the first mounting seat, and the other end of the first elastic member being connected with the first sliding member, the first sliding member being arranged in the first sliding member slide channel and extending out of the first slide channel in the circumferential direction; When the first transmission unit rotates to the first state, the first transmission unit drives the first sliding member to slide along the first slide channel, thereby compressing or stretching the first elastic member to drive the first mounting seat to rotate.

4. The automatic derailleur according to claim 3, characterized in that, The first mounting seat is also provided with a second slide channel extending in the circumferential direction, the second slide channel comprising a second sliding member slide channel and a second elastic member slide channel which are in communication with each other; The first control unit further comprises a second elastic assembly, the second elastic assembly comprises a second sliding member and a second elastic member, the second elastic member is arranged in the second elastic member sliding channel, one end of the second elastic member is connected with the first mounting base, and the other end of the second elastic member is connected with the second sliding member; the second sliding member is arranged in the second sliding member sliding channel and extends out of the second sliding channel in the circumferential direction; The second sliding member is used to abut against the first transmission unit, and after the first transmission unit and the output mechanism are relatively rotated, the second elastic member is stretched or compressed, so that the second sliding member slides towards the rotation direction of the first transmission unit.

5. The automatic derailleur according to claim 4, characterized in that, The first elastic member is sleeved on the first sliding member, the first elastic member comprises a first spring and a first sleeve, one end of the first spring is connected with the first mounting base, and the other end of the first spring is connected with the first sliding member through the first sleeve; The second elastic member is sleeved on the second sliding member, the second elastic member comprises a second spring and a second sleeve, one end of the second spring is connected with the first mounting base, and the other end of the second spring is connected with the second sliding member through the second sleeve.

6. The automatic derailleur according to any one of claims 2 to 5, characterized in that, The second control unit comprises a second mounting base and a third elastic assembly, and the second clutch unit is connected with the second mounting base; The second mounting base is provided with a third sliding channel extending in the circumferential direction, and the third sliding channel comprises a third sliding member sliding channel and a third elastic member sliding channel which are communicated with each other; The third elastic assembly comprises a third sliding member and a third elastic member, the third elastic member is arranged in the third elastic member sliding channel, one end of the third elastic member is connected with the second mounting base, and the other end of the third elastic member is connected with the third sliding member; the third sliding member is arranged in the third sliding member sliding channel and extends out of the third sliding channel in the circumferential direction; When the first transmission unit rotates from the first state to the second state, the first transmission unit drives the third sliding member to slide along the third sliding channel, so as to compress or stretch the third elastic member, and the second mounting base rotates.

7. The automatic derailleur according to claim 6, characterized in that, The second mounting base is further provided with a fourth sliding channel extending in the circumferential direction, and the fourth sliding channel comprises a fourth sliding member sliding channel and a fourth elastic member sliding channel which are communicated with each other; The second control unit further comprises a fourth elastic assembly, the fourth elastic assembly comprises a fourth sliding member and a fourth elastic member, the fourth elastic member is arranged in the fourth elastic member sliding channel, one end of the fourth elastic member is connected with the second mounting base, and the other end of the fourth elastic member is connected with the fourth sliding member; the fourth sliding member is arranged in the fourth sliding member sliding channel and extends out of the fourth sliding channel in the circumferential direction; The fourth sliding member is used to abut against the first transmission unit, and after the first transmission unit and the output mechanism are relatively rotated, the fourth elastic member is stretched or compressed, so that the fourth sliding member slides towards the rotation direction of the first transmission unit.

8. The automatic derailleur according to claim 7, characterized in that, The third elastic member is sleeved on the third sliding member, and the third elastic member comprises a third spring and a third sleeve, one end of the third spring is connected with the second mounting seat, and the other end of the third spring is connected with the third sliding member through the third sleeve; The fourth elastic member is sleeved on the fourth sliding member, and the fourth elastic member comprises a fourth spring and a fourth sleeve, one end of the fourth spring is connected with the second mounting seat, and the other end of the fourth spring is connected with the fourth sliding member through the fourth sleeve.

9. The automatic derailleur according to claim 1, characterized in that, The second clutch unit is provided with a first connecting arm avoiding slot, the first connecting arm avoiding slot penetrates the second clutch unit along the axial direction, and the first connecting arm avoiding slot extends along the circumferential direction on the second clutch unit, and the connecting arm can slide along the circumferential direction in the first connecting arm avoiding slot.

10. The automatic derailleur according to claim 9, characterized in that, The output mechanism is provided with a second connecting arm avoiding slot corresponding to the connecting arm, the second connecting arm avoiding slot extends along the circumferential direction on the output mechanism, and the connecting arm can slide along the circumferential direction in the second connecting arm avoiding slot.

11. The automatic derailleur according to claim 1, characterized in that, The connecting arm is provided with at least two, all the connecting arms are distributed on the first clutch unit at equal intervals along the circumferential direction, and each connecting arm is connected with the control unit along the axial direction through the second clutch unit.

12. The automatic derailleur according to claim 11, characterized in that, The control unit is provided with a connecting lug, the connecting arm is inserted into the connecting lug, and each connecting arm is connected with one connecting lug.

13. The automatic derailleur according to claim 1, characterized in that, The driving unit is a centrifugal block, the gear shifting control mechanism further comprises a centrifugal block mounting seat and an elastic reset member, the centrifugal block mounting seat is connected with the output mechanism, and the driving unit is rotatably installed on the centrifugal block mounting seat. The elastic reset member is connected with the driving unit, and the elastic reset member provides a restoring force for the driving unit block through its own elastic force, so that the driving unit restores and maintains the state.

14. The automatic derailleur according to claim 13, characterized in that, Further comprising an adjusting mechanism, the adjusting mechanism comprises an adjusting gear ring and an adjusting gear, the adjusting gear ring is connected with the elastic reset member; The adjusting gear is engaged with the adjusting gear ring, and the adjusting gear can drive the adjusting gear ring to rotate, so as to change the deformation state of the elastic reset member, so as to change the restoring force of the centrifugal block.

15. The automatic derailleur according to claim 14, characterized in that, The gear shifting control mechanism further comprises a second transmission unit, and the second transmission unit is synchronously connected with the first transmission unit. Along the axial direction, the first transmission unit and the second transmission unit are located on opposite sides of the driving unit, and the first transmission unit is located on the side close to the gear shifting mechanism; The two ends of the elastic reset member are respectively connected with the adjusting gear ring and the second transmission unit.

16. The automatic derailleur according to claim 15, characterized in that, The centrifugal block mounting seat comprises a first centrifugal block mounting seat and a second centrifugal block mounting seat connected with the output mechanism; Along the axial direction, the first centrifugal block mounting seat and the second centrifugal block mounting seat are located on opposite sides of the driving unit, and the first centrifugal block mounting seat is located on the side close to the gear shifting mechanism; The adjusting gear is rotatably installed on the second centrifugal block mounting seat.

17. The automatic derailleur according to claim 16, characterized in that, The driving unit is rotatably installed on the first centrifugal block mounting seat and the second centrifugal block mounting seat through a centrifugal block rotating shaft, and the driving unit is connected with the first transmission unit and the second transmission unit through a centrifugal block output shaft respectively.

18. The automatic derailleur according to claim 16, characterized in that, The second centrifugal block mounting seat is provided with a first suction accessory, and the second transmission unit is provided with a second suction accessory. The first suction accessory is used to suck the second suction accessory to maintain the state of the second transmission unit after rotation.

19. The automatic derailleur according to claim 18, characterized in that, The first suction accessory includes a first elastic passive suction accessory and a second passive suction accessory arranged in a circumferential staggered manner, and the second suction accessory includes a first magnetic suction accessory and a second magnetic suction accessory arranged in a circumferential staggered manner. The first elastic passive suction accessory is used to suck the first magnetic suction accessory to maintain the state of the second transmission unit after rotation, so that the driving unit maintains the first state. The second passive suction accessory is used to suck the second magnetic suction accessory to maintain the state of the second transmission unit after rotation, so that the driving unit maintains the second state.

20. The automatic derailleur according to claim 14, characterized in that, An installation hole is formed in the output mechanism, the installation hole penetrates through the output mechanism, and the adjusting gear is sealingly matched with the hole wall of the installation hole.

21. The automatic derailleur according to claim 20, characterized in that, The adjusting gear includes a gear part, a sealing part and an adjusting part connected in sequence. The gear part is engaged with the adjusting gear ring. The sealing part is sealingly matched with the hole wall of the installation hole. An adjusting hole is formed in the surface of the side away from the gear part of the adjusting part.

22. A bicycle characterized by The automatic internal transmission includes a vehicle body and an automatic internal transmission. The automatic internal transmission is installed on the driving wheel of the vehicle body, and the automatic internal transmission is the automatic internal transmission according to any one of claims 1 to 21.

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