CN217374813U

CN217374813U - Automatic inner speed changer and bicycle

Info

Publication number: CN217374813U
Application number: CN202221550193.4U
Authority: CN
Inventors: 李激初; 林杰煌
Original assignee: Guangdong Lofandi Intelligent Technology Co ltd
Current assignee: Guangdong Lofandi Intelligent Technology Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-06
Anticipated expiration: 2032-06-20

Abstract

The utility model provides an automatic internal transmission, which comprises an installation shaft, an input mechanism, an output mechanism, a speed change mechanism, an automatic gear shift control mechanism and an adjusting mechanism; the automatic gear shifting control mechanism comprises a centrifugal block, a clutch control unit, an elastic reset piece, a centrifugal block mounting seat and a synchronous piece; the synchronous piece comprises a first synchronous piece and a second synchronous piece; the first synchronizing part and the second synchronizing part are positioned on two opposite sides of the centrifugal block, the centrifugal block is connected with the clutch control unit through the first synchronizing part, and the second synchronizing part is synchronously connected with the first synchronizing part; the elastic reset piece is respectively connected with the second synchronous piece and the adjusting mechanism. And simultaneously, the utility model also provides a bicycle. Compared with the prior art, the utility model provides an automatic internal transmission can the effectual reduction equipment degree of difficulty to let adjustment mechanism to centrifugal piece the more convenience of regulation of the restoring force that receives.

Description

Automatic inner speed changer and bicycle

Technical Field

The utility model relates to a bicycle derailleur technical field especially relates to an automatic internal transmission and bicycle.

Background

Be applied to roughly divide into manual interior derailleur and automatic interior derailleur two categories in the interior derailleur on the bicycle, derailleur can realize automatic gear shift along with the transform of bicycle speed in the automation and adjust, need not ride passerby and carry out extra manual operation to the passerby's experience of riding is ridden in improvement that can be better.

In the prior art, an automatic internal transmission generally includes a mounting shaft, an input mechanism, an output mechanism, a transmission mechanism, a shift control mechanism, and other components. The input mechanism is used for being connected with a flywheel of a rear wheel of the bicycle (or the input mechanism can also be an assembly containing the flywheel), so that when the automatic inner speed changer is installed on the bicycle, the input mechanism can be driven to rotate by the flywheel. The output mechanism is usually a rear wheel hub, so that when the automatic inner speed changer is installed on the bicycle, the rotation of the output mechanism can synchronously drive the rear wheel to rotate, and the bicycle can move forwards. The speed change mechanism is arranged between the input mechanism and the output mechanism, is a transmission part between the input mechanism and the output mechanism, and is used for transmitting the rotation power of the input mechanism to the output mechanism so as to drive the output mechanism to rotate. The speed change mechanism can be provided with a plurality of power transmission paths, and the gear shift control mechanism is used for controlling the speed change mechanism. The gear shifting of the bicycle is realized by controlling the clutch between the components in the speed changing mechanism through the gear shifting control mechanism or controlling the clutch between the speed changing mechanism and the output mechanism through the gear shifting control mechanism.

Specifically, the shift control mechanism generally includes a centrifugal block, a clutch control unit, an elastic reset member, a centrifugal block mounting seat and a synchronizing member, wherein the centrifugal block mounting seat is connected with the hub, the centrifugal block is rotatably mounted on the centrifugal block mounting seat, and the centrifugal block is connected with the clutch control unit through the synchronizing member. When the rotating speed of the hub reaches a certain degree, the centrifugal block is thrown outwards due to the centrifugal force, the centrifugal block drives the clutch control unit to rotate when being thrown out, then components in the speed change mechanism are controlled to be combined with each other through the clutch control unit, or the speed change mechanism and the output mechanism are combined with each other through the clutch control unit, so that the driving force of the input mechanism can be transmitted to the hub through the clutch control unit, and automatic gear shifting and speed changing are realized. The elastic reset piece is used for driving the centrifugal block to reset, and after the rotating speed of the hub is reduced to a certain degree, the elastic reset piece applies restoring force to the centrifugal block through the elastic force of the elastic reset piece, so that the centrifugal block drives the clutch control unit to reset, and the bicycle is enabled to be reset to the initial state again.

Still can set up adjustment mechanism in the automatic internal transmission among the prior art usually, can realize adjusting the deformation state that elasticity resets through adjustment mechanism to adjust elasticity and reset the restoring force size that a piece applyed to the centrifugal piece, make and ride passerby and can carry out autonomic regulation to automatic internal transmission shift speed according to the demand of riding of self.

However, the automatic internal transmission of the prior art has a large difficulty in assembling, and the adjustment mechanism has a difficult adjustment to the restoring force applied to the centrifugal block.

SUMMERY OF THE UTILITY MODEL

The automatic inner speed changer solves the technical problems that the automatic inner speed changer in the prior art is high in assembly difficulty and the adjusting mechanism is very difficult to adjust restoring force borne by a centrifugal block. The utility model provides an automatic internal transmission, its equipment degree of difficulty that can reduce adjustment mechanism lets equipment convenience more to can let adjustment mechanism more convenient to the regulation of the resilience that the centrifugal piece receives.

An automatic internal transmission comprises a mounting shaft, an input mechanism, an output mechanism, a speed change mechanism, an automatic gear shift control mechanism and an adjusting mechanism;

the input mechanism and the output mechanism are both rotatably arranged on the mounting shaft;

the speed change mechanism is arranged on the mounting shaft, is positioned between the input mechanism and the output mechanism and is used for transmitting the driving force of the input mechanism to the output mechanism;

the automatic gear shifting control mechanism comprises a centrifugal block, a clutch control unit, an elastic reset piece, a centrifugal block mounting seat and a synchronous piece;

the centrifugal block mounting seat is connected with the output mechanism, the centrifugal block is rotatably mounted on the centrifugal block mounting seat, and the centrifugal block can rotate relative to the output mechanism, so that the rotation state of the clutch control unit is changed, and the driving force transmitted by the input mechanism is transmitted to the output mechanism through a corresponding one of a plurality of power transmission paths in the speed change mechanism;

the synchronous piece comprises a first synchronous piece and a second synchronous piece; in the axial direction, the first synchronizing member is positioned on one side of the centrifugal block close to the speed change mechanism, and the second synchronizing member is positioned on the other side of the centrifugal block; the centrifugal block is connected with the clutch control unit through the first synchronizing piece, and the second synchronizing piece is synchronously connected with the first synchronizing piece;

the elastic resetting piece is connected with the second synchronous piece so as to provide restoring force for the centrifugal block through the elasticity of the elastic resetting piece, so that the centrifugal block is restored and kept in a state;

the adjusting mechanism comprises an adjusting piece and a driving piece;

the adjusting piece is connected with the elastic resetting piece;

the driving piece is connected with the adjusting piece, and the driving piece can drive the adjusting piece to operate, so that the deformation state of the elastic reset piece is changed, and the restoring force of the centrifugal block is changed.

Preferably, the centrifugal block mounting seat comprises a first centrifugal block mounting seat and a second centrifugal block mounting seat which are connected with the output mechanism; in the axial direction, the first centrifugal block mounting seat is positioned on one side of the centrifugal block close to the speed change mechanism, and the second centrifugal block mounting seat is positioned on the other side of the centrifugal block;

the driving piece is rotatably installed on the second centrifugal block installation seat.

Preferably, the centrifugal block is rotatably mounted on the first centrifugal block mounting seat and the second centrifugal block mounting seat through a centrifugal block rotating shaft, and the centrifugal block is connected with the first synchronizing member and the second synchronizing member through a centrifugal block output shaft respectively.

Preferably, the first centrifugal block mounting seat is provided with a first avoidance groove which extends along the circumferential direction to avoid the centrifugal block output shaft;

and the second centrifugal block mounting seat is provided with a second avoidance groove which extends along the circumferential direction and is used for avoiding the centrifugal block output shaft.

Preferably, a first adsorption part is arranged on the second centrifugal block mounting seat, and a second adsorption part is arranged on the second synchronous part;

the first suction piece is used for sucking the second suction piece so as to keep the state of the second synchronous piece after rotation.

Preferably, the first suction part comprises a first elastic passive suction part and a second elastic passive suction part which are arranged along the circumferential direction in a staggered manner; the second adsorption piece comprises a first magnetic adsorption piece and a second magnetic adsorption piece which are arranged along the circumferential direction in a staggered mode;

the first elastic passive adsorption piece is used for adsorbing the first magnetic adsorption piece so as to keep a first state after the second synchronous piece rotates;

the second passive adsorption part is used for adsorbing the second magnetic adsorption part so as to keep a second state after the second synchronous part rotates;

the second state is formed by further rotating the second synchronous piece from the first state, and in the second state, the first magnetic adsorption piece compresses the first elastic passive adsorption piece.

Preferably, the automatic gear shifting control mechanism further comprises a second centrifugal block mounting seat cover;

a slideway extending along the circumferential direction is formed in the second centrifugal block mounting seat, and the first elastic passive adsorption piece is mounted in the slideway;

along the axial direction, the second centrifugal block mounting base cover is arranged on one side, provided with the slide way, of the second centrifugal block mounting base, so that the first elastic passive adsorption piece is limited in the slide way.

Preferably, the output mechanism is provided with a mounting hole, the mounting hole penetrates through the output mechanism, and the driving piece is in sealing fit with the hole wall of the mounting hole.

Preferably, the first synchronizing member comprises a synchronizing member body and a synchronizing member control column;

the centrifugal block is connected with the synchronizing piece body;

the synchronizing part control column is connected with the synchronizing part body and inserted into the clutch control unit.

A bicycle comprising a body and the automatic inner transmission of any one of the above;

the automatic internal transmission is mounted on a drive wheel of the vehicle body.

Compared with the prior art, the automatic internal transmission provided by the utility model comprises an installation shaft, an input mechanism, an output mechanism, a speed change mechanism, an automatic gear shift control mechanism and an adjusting mechanism; the input mechanism and the output mechanism are both rotatably arranged on the mounting shaft; the speed change mechanism is arranged on the mounting shaft, is positioned between the input mechanism and the output mechanism and is used for transmitting the driving force of the input mechanism to the output mechanism; the automatic gear shifting control mechanism comprises a centrifugal block, a clutch control unit, an elastic reset piece, a centrifugal block mounting seat and a synchronous piece; the centrifugal block mounting seat is connected with the output mechanism, the centrifugal block is rotatably mounted on the centrifugal block mounting seat, and the centrifugal block can rotate relative to the output mechanism, so that the rotation state of the clutch control unit is changed, and the driving force transmitted by the input mechanism is transmitted to the output mechanism through a corresponding one of a plurality of power transmission paths in the speed change mechanism; the synchronous piece comprises a first synchronous piece and a second synchronous piece; in the axial direction, the first synchronizing member is positioned on one side of the centrifugal block close to the speed change mechanism, and the second synchronizing member is positioned on the other side of the centrifugal block; the centrifugal block is connected with the clutch control unit through the first synchronizing piece, and the second synchronizing piece is synchronously connected with the first synchronizing piece; the elastic resetting piece is connected with the second synchronous piece so as to provide restoring force for the centrifugal block through the elasticity of the elastic resetting piece, so that the centrifugal block is restored and kept in a state; the adjusting mechanism comprises an adjusting piece and a driving piece; the adjusting piece is connected with the elastic resetting piece; the driving piece is connected with the adjusting piece, and the driving piece can drive the adjusting piece to operate, so that the deformation state of the elastic reset piece is changed, and the restoring force of the centrifugal block is changed. In the automatic internal transmission the both sides of centrifugation piece are provided with synchronous connection first synchronizing part the second synchronizing part, elasticity reset respectively with the second synchronizing part the regulating part is connected, makes regulating mechanism can install in the outside of centrifugation piece, the effectual equipment degree of difficulty that has reduced, and regulating mechanism only needs to pass through elasticity reset the piece is right the second synchronizing part is adjusted, can realize right the restoring force that the centrifugation piece receives adjusts, lets the convenience more and stable of accommodation process. Meanwhile, in the assembling process, the components in the automatic gear shifting control mechanism and the adjusting mechanism can be modularized and gradually assembled, so that the assembling difficulty can be further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional schematic illustration of an automatic internal transmission according to an exemplary embodiment;

FIG. 2 is a perspective view of a portion of the components of the automatic inner transmission illustrated in FIG. 1;

FIG. 3 is an exploded view of a portion of the components of the structure shown in FIG. 2;

FIG. 4 is a schematic plan view of a second centrifugal mass mounting base and a second control member of the automatic internal transmission of FIG. 1 in a first-gear state;

FIG. 5 is a schematic plan view of a second centrifugal mass mounting base and a second control member of the automatic internal transmission of FIG. 1 in a "second gear" state;

FIG. 6 is a schematic plan view of a second centrifugal mass mounting base and a second control member of the automatic internal transmission of FIG. 1 in a "third gear" state;

FIG. 7 is a perspective view of the first synchronization member shown in FIG. 3;

FIG. 8 is a schematic perspective view of the first centrifugal block mounting base shown in FIG. 3;

FIG. 9 is a perspective view of the second synchronizing member shown in FIG. 3;

FIG. 10 is a schematic perspective view of a second centrifugal block mounting base shown in FIG. 3;

FIG. 11 is a schematic diagram illustrating a planar structure of a centrifugal block and a first centrifugal block mounting seat in the automatic inner transmission of FIG. 1;

FIG. 12 is a schematic perspective view of the centrifugal block shown in FIG. 11;

FIG. 13 is a perspective view of the driving member shown in FIG. 2;

FIG. 14 is a perspective view of a portion of the components of the automatic inner transmission of FIG. 1;

FIG. 15 is a cross-sectional schematic view of an alternate angle of the automatic internal transmission of FIG. 1;

FIG. 16 is a cross-sectional schematic view of an alternative angle of the automatic internal transmission of FIG. 1.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "secured to," "mounted to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element; when an element is "connected" to another element, or is referred to as being "connected" to another element, it can be directly connected or indirectly connected to the other element.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure to be understood and read by those skilled in the art, and are not used for limiting the practical limitations of the present disclosure, so they do not have the essential technical meaning, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope of the technical disclosure of the present disclosure without affecting the function and the achievable purpose of the present disclosure.

The utility model provides an automatic internal transmission, which comprises an installation shaft, an input mechanism, an output mechanism, a speed change mechanism, an automatic gear shift control mechanism and an adjusting mechanism; the input mechanism and the output mechanism are both rotatably arranged on the mounting shaft; the speed change mechanism is arranged on the mounting shaft, is positioned between the input mechanism and the output mechanism and is used for transmitting the driving force of the input mechanism to the output mechanism; the automatic gear shifting control mechanism comprises a centrifugal block, a clutch control unit, an elastic reset piece, a centrifugal block mounting seat and a synchronous piece; the centrifugal block mounting seat is connected with the output mechanism, the centrifugal block is rotatably mounted on the centrifugal block mounting seat, and the centrifugal block can rotate relative to the output mechanism, so that the rotation state of the clutch control unit is changed, and the driving force transmitted by the input mechanism is transmitted to the output mechanism through a corresponding one of a plurality of power transmission paths in the speed change mechanism; the synchronous piece comprises a first synchronous piece and a second synchronous piece; in the axial direction, the first synchronizing member is positioned on one side of the centrifugal block close to the speed change mechanism, and the second synchronizing member is positioned on the other side of the centrifugal block; the centrifugal block is connected with the clutch control unit through the first synchronizing piece, and the second synchronizing piece is synchronously connected with the first synchronizing piece; the elastic resetting piece is connected with the second synchronous piece so as to provide restoring force for the centrifugal block through the elasticity of the elastic resetting piece, so that the centrifugal block is restored and kept in a state; the adjusting mechanism comprises an adjusting piece and a driving piece; the adjusting piece is connected with the elastic resetting piece; the driving piece is connected with the adjusting piece, and the driving piece can drive the adjusting piece to operate, so that the deformation state of the elastic reset piece is changed, and the restoring force of the centrifugal block is changed. In the automatic internal transmission the both sides of centrifugation piece are provided with the synchronous connection first synchronizing part the second synchronizing part, elasticity reset respectively with the second synchronizing part the regulating part is connected, adjustment mechanism can install in the outside of centrifugation piece, the effectual equipment degree of difficulty that has reduced, and adjustment mechanism only needs to pass through elasticity reset the piece right the second synchronizing part is adjusted, can realize right the restoring force that the centrifugation piece receives is adjusted, lets the convenience and the stability of accommodation process more. Meanwhile, in the assembling process, the components in the automatic gear shifting control mechanism and the adjusting mechanism can be modularly and gradually assembled, so that the assembling difficulty can be further reduced.

Example one

Referring to fig. 1 to 16, the present embodiment provides an automatic internal transmission 100 for performing an automatic gear shifting according to a vehicle speed of a vehicle during a traveling process of the vehicle.

The automatic internal transmission 100 includes a mounting shaft 10, an input mechanism 20, an output mechanism 30, a speed change mechanism 40, an automatic shift control mechanism 50 and an adjusting mechanism 60, wherein both 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, the input mechanism 20 is rotatable with respect to the mounting shaft 10, the output mechanism 30 is mounted on the mounting shaft 10, the output mechanism 30 is rotatable with respect to the mounting shaft 10, and the mounting shaft 10 is a rotation center axis of the input mechanism 20 and the output mechanism 30. Specifically, in the present embodiment, the input mechanism 20 is a flywheel assembly, the flywheel assembly specifically includes a flywheel and a flywheel seat connected to the flywheel, and the output mechanism 30 is a hub. The input mechanism 20 is configured to be coupled to a pedal of a bicycle via a chain, and the output mechanism 30 is configured to be coupled to a drive wheel of the bicycle. When a rider rides a bicycle, the rider treads on the pedals to drive the input mechanism 20 to rotate, then the input mechanism 20 inputs driving force into the automatic inner speed changer 100, and the output mechanism 30 outputs the driving force to drive the bicycle driving wheel to rotate, so that the bicycle can run.

The speed change mechanism 40 is mounted on the mounting shaft 10 and located between the input mechanism 20 and the output mechanism 30 for transmitting the driving force of the input mechanism 20 to the output mechanism 30. That is, the speed change mechanism 40 is provided between the input mechanism 20 and the output mechanism 30 to transmit the driving force input from the input mechanism 20 side to the output mechanism 30 side.

The automatic shifting mechanism 50 includes a centrifugal block 51, a clutch control unit 52, an elastic reset member 53, a centrifugal block mounting seat 54 and a synchronizing member 55. The centrifugal block mounting seat 54 is connected to the output mechanism 30, the centrifugal block 51 is rotatably mounted to the centrifugal block mounting seat 54, and the centrifugal block 51 is rotatable relative to the output mechanism 30, so as to change a rotation state of the clutch control unit 52, so that the driving force transmitted by the input mechanism 20 is transmitted to the output mechanism 30 through a corresponding one of a plurality of power transmission paths in the speed change mechanism 40. The plurality of power transmission paths means at least two power transmission paths, so that selection between at least two gears can be achieved by driving the clutch control unit 52 to rotate. That is, the centrifugal block 51 can rotate relative to the output mechanism 30 after being stressed, so as to drive the clutch control unit 52 to rotate, so that the clutch control unit 52 is directly or indirectly coupled with the output mechanism 30, the driving force input by the input mechanism 20 is transmitted to the output mechanism 30 through the clutch control unit 52, the change of the power transmission path in the automatic internal transmission 100 is realized, and the gear shifting and speed changing in the automatic internal transmission 100 are realized. Specifically, during the bicycle traveling, when the rotation speed of the output mechanism 30 reaches a certain speed, the centrifugal block 51 is "thrown" outward due to the centrifugal force (wherein "throw" refers to the centrifugal block rotating away from the mounting shaft 10 relative to the output mechanism 30 after being subjected to the centrifugal force). Because the clutch control unit 52 is connected with the centrifugal block 51, when the centrifugal block 51 is thrown outwards, the clutch control unit 52 can be driven to rotate, the rotation state of the clutch control unit 52 is changed, components in the clutch control unit 52 are directly or indirectly combined with the output mechanism 30, the power transmission path in the automatic internal transmission 100 is changed, and the gear shifting and the speed changing of the automatic internal transmission 100 are realized. It should be noted that the engaging member in the clutch control unit 52 may be disposed between the speed change mechanism 40 and the output mechanism 30, so that when the centrifugal block 51 drives the clutch control unit 52 to rotate to a certain angle, the engaging member in the clutch control unit 52 can engage the corresponding member in the speed change mechanism 40 and the corresponding member in the output mechanism 30 with each other to realize gear shifting; or, the engaging component of the clutch control unit 52 may be disposed in the speed change mechanism 40, so that when the centrifugal block 51 drives the clutch control unit 52 to rotate to a certain angle, the engaging component of the clutch control unit 52 can engage two (or more) components of the speed change mechanism 40 with each other to realize gear shifting. That is, the clutch control unit 52 may be provided between the shift mechanism 40 and the output mechanism 30 for controlling the mutual engagement of the shift mechanism 40 and the output mechanism 30; alternatively, the clutch control unit 52 may be provided in the shifting mechanism 40 for controlling the mutual coupling of the components in the shifting mechanism 40.

That is, the automatic internal transmission 100 has at least two gears, and the centrifugal block 51 drives the clutch control unit 52 to different rotation position states, so that the clutch control unit 52 is in an unengaged state (or in an engaged state with a corresponding gear shifting component), and the change between the gears is realized.

The synchronizer 55 includes a first synchronizer 551 and a second synchronizer 552. In the axial direction, the first synchronizing member 551 is located on one side of the centrifugal block 51 close to the shifting mechanism 40, and the second synchronizing member 552 is located on the other side of the centrifugal block 51 (i.e., the side away from the shifting mechanism 40). The centrifugal mass 51 is connected to the clutch control unit 52 via the first synchronizing member 551, and the second synchronizing member 552 is synchronously connected to the first synchronizing member 551. Wherein, the synchronous connection of the second synchronizer 552 and the first synchronizer 551 means that: the second synchronizer 552 is connected to the first synchronizer 551, and the second synchronizer 552 and the first synchronizer 551 can rotate synchronously. Therefore, when any one of the synchronous pieces rotates, the other synchronous piece can be driven to synchronously rotate.

The elastic reset piece 53 is connected to the second synchronizing piece 552, and the elastic reset piece 53 is configured to provide a restoring force to the centrifugal block 51 through its own elastic force, so that the centrifugal block 51 is restored and kept in a state. Wherein the elastic restoring member 53 refers to: can be elastically deformed after being stressed, and can restore the component in the initial state after the stress is reduced or eliminated. The recovery and retention of the centrifugal mass 51 means: the centrifugal block 51 is caused to have a tendency of rotating towards an initial position, so that when the centrifugal force applied to the centrifugal block 51 is reduced or eliminated, the centrifugal block 51 can be driven to rotate towards the initial position by the restoring force, and meanwhile, the centrifugal block 51 can be kept in a state by the restoring force after the rotation is finished. Namely, the elastic reset piece 53 is used for providing a force opposite to the trend of the centrifugal block 51, so that the elastic reset piece 53 can drive the centrifugal block 51 to be completely reset or partially reset, and the reset of the gear is realized. Therefore, when the centrifugal block 51 is subjected to a centrifugal force, the centrifugal force must overcome the restoring force applied to the centrifugal block 51 by the elastic restoring member 53, and the centrifugal block 51 can only be "thrown out" outwards and then can only drive the clutch control unit 52 to rotate in place, so as to realize gear shifting. It should be noted that the restoring force may be used to drive the centrifugal block 51 to fully restore to the initial position; or the restoring force may be to drive the centrifugal block 51 to partially restore the original position. That is, the centrifugal block 51 can be driven to rotate in the opposite direction only by the restoring force, so as to drive the clutch control unit 52 to rotate, and thus the gear shifting is realized.

The adjusting mechanism 60 comprises an adjusting piece 61 and a driving piece 62, the adjusting piece 61 is connected with the elastic resetting piece 53, the driving piece 62 is connected with the adjusting piece 61, and the driving piece 62 can drive the adjusting piece 61 to run, so that the deformation state of the elastic resetting piece 53 is changed, and the restoring force of the centrifugal block 51 is changed. Wherein, the operation of the adjusting member 61 means: the adjusting member 61 moves or rotates relative to the elastic resetting member 53, so that the adjusting member 61 applies force to the elastic resetting member 53, the elastic resetting member 53 deforms, and the deformation state of the elastic resetting member 53 is changed. That is, the driving element 62 is configured to provide a driving force to the adjusting element 61, so that the adjusting element 61 operates, and the adjusting element 61 applies a force to the elastic resetting element 53, so that the elastic resetting element 53 deforms, and a deformation state of the elastic resetting element 53 is changed. So that the restoring force applied by the elastic restoring member 53 to the centrifugal mass 51 is changed, and thus the centrifugal mass 51 can be "thrown" outward by a smaller centrifugal force (or the centrifugal mass 51 can be "thrown" outward by a larger centrifugal force). That is to say, in this embodiment, the adjusting member 61 can operate relative to the elastic restoring member 53, so as to change the deformation state of the elastic restoring member 53, and further change the magnitude of the restoring force exerted by the elastic restoring member 53 on the centrifugal block 51, so that the bicycle internal transmission 100 can realize the "throwing-out" of the centrifugal block 51 at different rotation speeds according to actual needs, and meet the riding requirements of different riders. The driving member 62 is used for providing a driving force to the adjusting member 61 to drive the adjusting member 61 to operate. The driving member 62 may provide a driving force for the adjusting member 61, or the driving member 62 may provide a driving force for the adjusting member 61, that is, the driving member 62 only needs to drive the adjusting member 61 to operate.

Specifically, in this embodiment, the adjusting member 61 is an annular gear structure, the driving member 62 is a gear structure, and the driving member 62 is engaged with the adjusting member 61, so that the adjusting member 61 can be driven to rotate by the rotation of the driving member 62, and the adjustment of the elastic restoring member 53 is realized. Of course, in other embodiments, the adjusting member 61 and the driving member 62 may adopt any other desired structure, such as a rack and pinion structure, a worm gear structure, a connecting rod structure, and the like. In this embodiment, the matching structure of the inner gear ring and the gear is adopted, so that the overall structure is simpler, the stability is better in the adjusting process, and the elastic resetting piece 53 is better ensured to be adjusted. Simultaneously, regulating part 61 with can realize interlocking between the driving piece 62, can further guarantee right the stability that elasticity resets 53 and adjusts, further improvement ride passerby's the experience of riding.

It can be understood that, in the automatic inner transmission in the prior art, because the radial space inside the output mechanism is limited, the difficulty of the automatic inner transmission in the assembling process is very high, the position precision among all the parts after final assembly is also influenced, and the adjustment of the restoring force of the centrifugal block by the adjusting mechanism is very difficult; meanwhile, after the assembly is finished, the adjusting mechanism is located on the inner side of the automatic gear shifting control mechanism and is far away from the external space position, so that a rider is very inconvenient to control and adjust the adjusting mechanism, and the adjusting mechanism is very difficult to adjust the restoring force of the centrifugal block.

In the automatic internal transmission 100 of the present embodiment, the first synchronizing member 551 and the second synchronizing member 552 are disposed on two sides of the centrifugal mass 51, the first synchronizing member 551 is connected to the clutch control unit 52, and the second synchronizing member 552 is connected to the elastic restoring member 53. Therefore, the control over the clutch control unit 52 and the control over the restoring force borne by the centrifugal block 51 are located on the two opposite sides of the centrifugal block 51, the axial space of the output mechanism 30 is better utilized, parts can have more mounting space in the axial direction, the space occupied in the radial direction is reduced, the assembly difficulty is effectively reduced, and the position accuracy of the parts after installation can be better guaranteed. And when the automatic gear shifting control mechanism 50 and the adjusting mechanism 60 are installed, the parts can be assembled in a modularized and gradual mode, and the installation difficulty can be further reduced. As the clutch control unit 52, the first synchronizing member 551, the centrifugal block mounting seat 54, the centrifugal block 51, the second synchronizing member 552, the elastic restoring member 53 and the adjusting mechanism 60 can be gradually sleeved into the output mechanism 30 through the mounting shaft 10. And the elastic reset piece 53 is connected with the second synchronizing piece 552, so that the adjusting mechanism 60 can be arranged outside the automatic gear shifting control mechanism 50, and the adjusting mechanism 60 can be closer to the end surface of the output mechanism 30 and the external space position, thereby facilitating the operation and adjustment of the adjusting mechanism 60 by a rider. When the centrifugal block 51 is adjusted, the restoring force exerted on the centrifugal block 51 can be adjusted only by adjusting the second synchronizing member 552 through the adjusting mechanism 60, which is also convenient for the adjusting mechanism 60 to adjust the restoring force exerted on the centrifugal block 51.

Preferably, the centrifugal block mounting seat 54 includes a first centrifugal block mounting seat 541 and a second centrifugal block mounting seat 542 connected to the output mechanism 30. In the axial direction, the first centrifugal block mounting seat 541 is located on one side of the centrifugal block 51 close to the speed change mechanism 40, the second centrifugal block mounting seat 542 is located on the other side of the centrifugal block 51 (i.e., the side far away from the speed change mechanism 40), and the driving member 62 is rotatably mounted on the second centrifugal block mounting seat 542. That is, in this embodiment, two centrifugal block mounting seats 54 are provided, two centrifugal block mounting seats 54 are located at two opposite sides of the centrifugal block 51, and the driving member 62 is rotatably mounted on the centrifugal block mounting seat 54 located at the outer side. Thereby facilitating the installation of the driving member 62 and ensuring the reliability of the position of the driving member 62. Meanwhile, during assembly, the second centrifugal block mounting seat 542, the elastic restoring member 53, the second synchronizing member 552 and the adjusting mechanism 60 can be assembled into an integral module and then installed into the output mechanism 30, thereby further reducing the assembly difficulty.

It is understood that, in the present embodiment, by providing the first centrifugal block mounting seat 541 and the second centrifugal block mounting seat 542, the assembly space is increased, 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 inner transmission 100 is not influenced.

Preferably, the centrifugal block 51 is rotatably mounted on the first centrifugal block mounting seat 541 and the second centrifugal block mounting seat 542 through a centrifugal block rotating shaft 511, and the centrifugal block 51 is respectively connected with the first synchronizing member 551 and the second synchronizing member 552 through a centrifugal block output shaft 512. Therefore, when the centrifugal block 51 is subjected to a certain centrifugal force, it can rotate around the rotation axis 511 of the centrifugal block. While the centrifugal block 51 rotates, the centrifugal block 51 can drive the centrifugal block output shaft 512 to swing along the circumferential direction, so that the control member 55 can be driven to rotate synchronously by the centrifugal block output shaft 512. The structure can better guarantee the driving of the centrifugal block 51 to the control part 55, and can also better guarantee the reliability of the installation of the centrifugal block 51. In this embodiment, the first synchronizing member 551 and the second synchronizing member 552 are synchronously connected via the centrifugal mass output shaft 512, so that the overall structure is simpler, and the synchronous rotation between the first synchronizing member 551 and the second synchronizing member 552 is better ensured.

Preferably, the second centrifugal block mounting seat 542 is provided with a first suction piece 56, and the second synchronizing member 552 is provided with a second suction piece 57. The first suction member 56 is used for sucking the second suction member 57 to maintain the rotated state of the second synchronizing member 552. Namely, the second centrifugal block mounting seat 542 and the second synchronizing member 552 are provided with corresponding adsorption members, when the second synchronizing member 552 is driven by the centrifugal block 51 to rotate, the second centrifugal block mounting seat 542 and the second synchronizing member 552 are correspondingly adsorbed to provide extra adsorption force, so that the second synchronizing member 552 keeps a rotated state, the centrifugal block 51 keeps a state, a gear can be better maintained after gear shifting, and the gear stability after gear shifting is guaranteed.

Specifically, in the present embodiment, the automatic internal transmission 100 is a three-gear automatic internal transmission, that is, the automatic internal transmission 100 has three gears "first gear", "second gear", and "third gear". When the centrifugal mass 51 is in the initial state, the automatic internal transmission 100 is in the first gear state; when the centrifugal block 51 is subjected to a certain centrifugal force, the centrifugal block 51 rotates to a certain angle, and a part of centrifugal block is thrown out, so that the automatic internal transmission 100 can be switched from a first gear state to a second gear state. When the centrifugal block 51 is subjected to a larger centrifugal force, the centrifugal block 51 rotates to a larger angle, and the centrifugal block is completely thrown out, so that the automatic internal transmission 100 can be switched from the second gear state to the third gear state. Of course, in other embodiments, the automatic internal transmission 100 may have any number of gears, and in the present embodiment, the automatic internal transmission 100 having three gears is only used as an example for description.

Preferably, the first suction member 56 includes a first elastic passive suction member 561 and a second elastic passive suction member 562 which are arranged along the circumferential direction in a staggered manner, that is, the first elastic passive suction member 561 and the second elastic passive suction member 562 are arranged at different positions in the circumferential direction of the second centrifugal block mounting seat 542; the second adsorbing member 57 includes a first magnetic adsorbing member 571 and a second magnetic adsorbing member 572 which are arranged along the circumferential direction in a staggered manner, that is, the first magnetic adsorbing member 571 and the second magnetic adsorbing member 572 are arranged at different positions in the circumferential direction of the second synchronizing member 552; the first elastic passive adsorbing element 561 is used for adsorbing the first magnetic adsorbing element 571 to maintain the first state after the second synchronizing element 552 rotates; the second passive attraction member 562 is configured to attract the second magnetic attraction member 572 to maintain a second state after the second synchronization member 552 rotates; the second state is when the second synchronizer 552 further rotates from the first state, and in the second state, the first magnetic attraction 571 compresses the first elastic passive attraction 561. Specifically, in this embodiment, when the centrifugal block 51 is partially "thrown out", the second synchronizing member 552 is in the first state, and at this time, the automatic internal transmission 100 is in the "second gear" state, and the first magnetic attraction member 571 and the first elastic passive attraction member 561 are correspondingly attracted by a magnetic force, so that the automatic internal transmission 100 is maintained in the "second gear" state. When the centrifugal force applied to the centrifugal block 51 is further increased to make the centrifugal block 51 further rotate to completely "throw out", the second synchronizing member 552 is in the second state, and at this time, when the automatic internal transmission 100 is in the "third gear" state, the second magnetic adsorbing member 572 and the second passive adsorbing member 562 are correspondingly adsorbed by magnetic force, so that the automatic internal transmission 100 is maintained in the "third gear" state. By the cooperation between the first suction member 56 and the second suction member 57, the centrifugal mass 51 can be more stably maintained at the "second gear" or "third gear" position, and the gear position of the automatic internal transmission 100 can be more accurately achieved. In this embodiment, the first attraction member 56 is made of iron, and the second attraction member 57 is made of a magnet. Of course, in other embodiments, a magnet may be used for the first attraction member 56, and an iron member may be used for the second attraction member 57, and the attraction between the first attraction member 56 and the second attraction member 57 can also be achieved. The first suction member 56 or the second suction member 57 is not limited to a ferrous member, and other materials that can be attracted by a magnet may be used. That is, it is only necessary that the first suction member 56 and the second suction member 57 generate a suction force therebetween so that the second synchronizing member 552 maintains a state and the shift position of the automatic internal transmission 100 is more accurate. Specifically, in this embodiment, the first elastic passive absorption member 561 is a spring assembly, and when the centrifugal force applied to the centrifugal block 51 increases, the first magnetic absorption member 571 can apply a force to the first elastic passive absorption member 561 to compress the first elastic passive absorption member 561, so that the first elastic passive absorption member 561 moves, and thus the first elastic passive absorption member 561 does not affect the automatic inner transmission 100 to change to the "third gear" state.

Of course, in other embodiments, when the automatic internal transmission 100 has any other number of gears, the number of the first suction members 56 and the second suction members 57 may be smaller or larger. The first suction member 56 and the second suction member 57 may be provided one each when the automatic internal transmission 100 is a second-speed automatic internal transmission.

Preferably, the first synchronizer 551 includes a synchronizer body 5511 and a synchronizer control post 5512, the centrifugal block 51 is connected to the synchronizer body 5511, the synchronizer control post 5512 is connected to the synchronizer body 5511, and the synchronizer control post 5512 is inserted into the clutch control unit 52. Therefore, when the centrifugal block 51 drives the first synchronizing member 551 to rotate, the first synchronizing member 551 drives the clutch control unit 52 to rotate through the synchronizing member control post 5512 inserted into the clutch control unit 52, the structure is simple and compact, and the clutch control unit 52 can be effectively driven to rotate to perform gear shifting control.

Preferably, the first centrifugal block mounting seat 541 is provided with a first avoidance groove 5411 extending along the circumferential direction to avoid the centrifugal block output shaft 512; the second centrifugal block mounting seat 542 is provided with a second avoidance groove 5421 extending along the circumferential direction to avoid the centrifugal block output shaft 512. Therefore, the first avoidance groove 5411 and the second avoidance groove 5421 can well avoid the centrifugal block output shaft 512, and the centrifugal block output shaft 512 can be radially arranged closer to the center, so that the overall structure is more compact.

Preferably, the automatic shift control mechanism 50 further includes a second centrifugal block mounting base cover, a sliding way 5422 extending along the circumferential direction is formed on the second centrifugal block mounting base 542, and the first elastic passive adsorbing member 561 is mounted in the sliding way 5422, so that the position stability of the first elastic passive adsorbing member 561 can be better ensured, and the first elastic passive adsorbing member 561 can be better guided. In the axial direction, the second centrifugal block mounting base cover is disposed on a side of the second centrifugal block mounting base 542 where the slide rail 5422 is disposed, so as to limit the first elastic passive absorption member 561 to the slide rail 5422. Therefore, the first elastic passive adsorption piece 561 can be better axially limited through the second centrifugal block mounting base cover, and the first elastic passive adsorption piece 561 is prevented from coming off the slide way 5422.

Specifically, the second synchronizing member 552 is provided with two magnet installation positions 5521, the first magnetic adsorbing member 571 and the second magnetic adsorbing member 572 are correspondingly installed at the two magnet installation positions 5521, the second synchronizing member 552 is further provided with a reset member installation position 5522, and the elastic reset member 53 is correspondingly installed at the reset member installation position 5522. An iron piece mounting position 5423 is formed in the second centrifugal block mounting seat 542, and the second passive adsorption piece 562 is correspondingly mounted at the iron piece mounting position 5423.

Specifically, a centrifugal block mounting hole 513 is formed in the centrifugal block 51, and the centrifugal block rotating shaft 511 is correspondingly disposed at the centrifugal block mounting hole 513. And the centrifugal block 51 is further 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. Therefore, when the centrifugal block 51 rotates under a certain centrifugal force, the centrifugal block output shaft 512 can be forced through the hole wall of the centrifugal block output hole 514 to drive the centrifugal block output shaft 512 to swing along the circumferential direction, and further drive the control member 55 to rotate synchronously.

Specifically, in the present embodiment, six centrifugal blocks 51 are disposed in the automatic internal transmission 100, so that the six centrifugal blocks 51 can synchronously operate, and each centrifugal block 51 is correspondingly provided with the centrifugal block rotating shaft 511 and the centrifugal block output shaft 512. Of course, in other embodiments, more or fewer centrifugal masses may be provided in the automatic internal transmission 100. In the embodiment, the control member 55 can be controlled more stably by six centrifugal blocks, so that the stability of gear shifting is better guaranteed.

Preferably, a mounting hole is formed in the output mechanism 30, the mounting hole penetrates through the output mechanism 30, and the driving member 62 is in sealing fit with the hole wall of the mounting hole. Wherein, the driving piece 62 is in sealing fit with the hole wall of the mounting hole by the following steps: the outer wall of driving piece 62 with the pore wall butt of mounting hole, thereby will the mounting hole is sealed for external pollutant can not pass through the mounting hole gets into to inside derailleur 100 in the automatic, better guarantee derailleur 100's in the automatic stability and life. Meanwhile, the driving piece 62 is convenient for the rider to operate and adjust through the mounting hole.

Specifically, in this embodiment, the output mechanism 30 includes a hub body 31 and an end cover 32 installed at one end of the hub body 31, the installation hole is opened on the end cover 32, and the installation hole axially penetrates through the end cover 32.

Preferably, the driving member 62 includes a gear portion 621, a sealing portion 622 and an adjusting portion 623 that are connected in sequence, the gear portion 621 is engaged with the adjusting member 61, the sealing portion 622 is in sealing fit with a hole wall of the mounting hole, and an adjusting hole 6231 is opened on a surface of one side of the adjusting portion 623, which is far away from the gear portion 621. The adjustment portion 623 and the adjustment hole 6231 facilitate the engagement with an external tool, and further facilitate the operation and adjustment of the driving member 62 by the rider. Specifically, in this embodiment, the adjusting hole 6231 is a hexagon socket. Of course, in other embodiments, the shape of the adjustment aperture 6231 can be any other desired shape, such as a cross, a line, etc.

Preferably, the elastic restoring member 53 is a spiral spring, so that the restoring force can be better provided to the centrifugal block 51. Of course, in other embodiments, the elastic restoring member 53 may also adopt other required elastic structures, such as a torsion spring, etc.

Preferably, the speed change mechanism 40 includes a one-way clutch 41, a first planetary gear train 42 and a second planetary gear train 43 which are sequentially arranged along the axial direction, the one-way clutch 41 is located at a side close to the input mechanism 20, and the clutch control unit 52 is configured to control the combination among the first planetary gear train 42, the second planetary gear train 43 and the output mechanism 30, so as to realize the switching between the third gears of the automatic internal transmission 100. Namely, the clutch control unit 52 is used for controlling the combination between the first planetary gear train 42 and the output mechanism 30 to realize gear shifting. And the clutch control unit 52 is also used for controlling the combination between the second planetary gear train 43 and the output mechanism 30 to realize gear shifting. Specifically, in the present embodiment, when the automatic internal transmission 100 is in the first gear state, the driving force transmitted from the input mechanism 20 is transmitted to the output mechanism 30 via the one-way clutch 41. When the automatic internal transmission 100 is in the "second gear" state, the clutch control unit 52 couples the first planetary gear train 42 and the output mechanism 30, and the driving force transmitted by the input mechanism 20 is transmitted to the clutch control unit 52 through the first planetary gear train 42 and then transmitted to the output mechanism 30. When the automatic internal transmission 100 is in the "third gear" state, the clutch control unit 52 couples the second planetary gear set 43 with the output mechanism 30, and the driving force transmitted by the input mechanism 20 is transmitted to the clutch control unit 52 via the second planetary gear set 43 and then to the output mechanism 30.

Specifically, the clutch control unit 52 includes a first clutch 521, a second clutch 522, a first control device 523, and a second control device 524, where the first clutch 521 is located between the first planetary gear train 42 and the output mechanism 30, and the second clutch 522 is located between the second planetary gear train 43 and the output mechanism 30. The first clutch 521 is connected to the first control device 523, and the second clutch 522 is connected to the second control device 524. The synchronizing member control column 5512 of the first synchronizing member 551 is correspondingly inserted into the first control device 523 and the second control device 524. When the centrifugal block 51 is partially "thrown out", the centrifugal block 51 drives the first synchronizing member 551 to rotate, so that the first synchronizing member 551 drives the first control device 523 to rotate, and the first control device 523 drives the first clutch 521 to rotate, and the first clutch 521 couples the first planetary gear train 42 and the output mechanism 30, so that the automatic internal transmission 100 is changed to the "second gear". When the centrifugal block 51 is completely thrown out, the centrifugal block 51 will drive the first synchronizing member 551 to rotate further, so as to drive the second control device 524 to rotate through the first synchronizing member 551, and further the second control device 524 drives the second clutch 522 to rotate, and the second planetary gear set 43 is coupled to the output mechanism 30 through the second clutch 522, so that the automatic internal transmission 100 is changed into the third gear.

In the present embodiment, the one-way clutch 41, the first clutch 521, and the second clutch 522 are all roller clutches, but in other embodiments, other types of clutches may be used, for example, any type of clutch such as a pawl type clutch, a sprag type clutch, a combination of a pawl type clutch and a roller type clutch may be used.

In this embodiment, the axial direction and the circumferential direction are both referred to the axial direction and the circumferential direction of the mounting shaft 10.

Example two

The present embodiment also provides a bicycle including a body and an automatic internal transmission, which may be the automatic internal transmission 100 described above. The automatic inner transmission is mounted on a driving wheel of the vehicle body. It should be noted that the bicycle may be a conventional bicycle, such as a conventional two-wheeled bicycle, in which the driving force is output from the rider to the rear wheel through pedals, and the automatic internal transmission may be specifically installed at the rear wheel of the conventional bicycle. Of course, the bicycle can also be a power-assisted bicycle, namely, a device for providing additional power can be arranged on the bicycle, and the difficulty of riding of a rider is reduced by the additional power source. Particularly, the electric power-assisted bicycle is assisted by additional electric energy. Of course, the power source of the power-assisted bicycle is not limited to electric energy, and can be other forms of power sources. Meanwhile, the number of the wheel bodies of the bicycle is not limited to two wheel types, and the number of the wheel bodies of the bicycle can be selected according to actual requirements. Even further, the bicycle may be a pure electric bicycle.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. An automatic internal transmission is characterized by comprising a mounting shaft, an input mechanism, an output mechanism, a speed change mechanism, an automatic gear shift control mechanism and an adjusting mechanism;

the adjusting mechanism comprises an adjusting piece and a driving piece;

the adjusting piece is connected with the elastic resetting piece;

2. The automatic internal transmission of claim 1, wherein the centrifugal mass mount comprises a first centrifugal mass mount and a second centrifugal mass mount connected with the output mechanism; in the axial direction, the first centrifugal block mounting seat is positioned on one side of the centrifugal block close to the speed change mechanism, and the second centrifugal block mounting seat is positioned on the other side of the centrifugal block;

the driving piece is rotatably arranged on the second centrifugal block mounting seat.

3. The automatic internal transmission of claim 2, wherein the centrifugal mass is rotatably mounted to the first centrifugal mass mounting seat and the second centrifugal mass mounting seat by a centrifugal mass rotating shaft, and the centrifugal mass is connected to the first synchronizing member and the second synchronizing member by a centrifugal mass output shaft, respectively.

4. The automatic inner transmission according to claim 3, wherein the first centrifugal block mounting seat is provided with a first avoidance groove extending in the circumferential direction to avoid the centrifugal block output shaft;

5. The automatic internal transmission of claim 2, wherein a first suction member is disposed on said second centrifugal mass mounting base, and a second suction member is disposed on said second synchronizing member;

6. The automatic inner transmission of claim 5, wherein the first suction member comprises a first elastic passive suction member and a second elastic passive suction member which are arranged along the circumferential direction in a staggered manner; the second adsorption piece comprises a first magnetic adsorption piece and a second magnetic adsorption piece which are arranged along the circumferential direction in a staggered mode;

7. The automatic internal transmission of claim 6, wherein said automatic shift control mechanism further comprises a second centrifugal mass mount cover;

8. The automatic internal transmission of claim 1, wherein said output member defines a mounting hole, said mounting hole being disposed through said output member, said drive member being in sealing engagement with a wall of said mounting hole.

9. The automatic inner transmission of claim 1, wherein the first synchronizer includes a synchronizer body and a synchronizer control post;

the centrifugal block is connected with the synchronizing piece body;

the synchronizing piece control column is connected with the synchronizing piece body and inserted into the clutch control unit.

10. A bicycle is characterized by comprising a bicycle body and an automatic inner speed changer;

the automatic internal transmission is mounted to a drive wheel of the vehicle body, and the automatic internal transmission is the automatic internal transmission according to any one of claims 1 to 9.