CN217348120U

CN217348120U - Automatic inner speed changer and bicycle

Info

Publication number: CN217348120U
Application number: CN202221550360.5U
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: 2022-09-02
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 and an elastic resetting piece; the centrifugal block is connected with the output mechanism, and the clutch control unit is connected with the centrifugal block; the elastic reset piece is used for providing restoring force for the centrifugal block through self elasticity; the adjusting mechanism comprises an adjusting gear ring and an adjusting gear; the adjusting gear ring is connected with the elastic reset piece; the adjusting gear is meshed with the adjusting gear ring, and the adjusting gear can drive the adjusting gear ring to rotate, so that the deformation state of the elastic reset piece is changed, and the restoring force borne by the centrifugal block is changed. And simultaneously, the utility model also provides a bicycle. Compared with the prior art, the utility model provides an automatic internal transmission and bicycle can be more stable adjust elasticity and reset the restoring force size that the piece applyed to the centrifugal piece.

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 mounting shafts, input mechanisms, output mechanisms, transmission mechanisms, shift control mechanisms, and the like. The input mechanism is used for being connected with a flywheel of a rear wheel of the bicycle, so that when the automatic inner speed changer is installed on the bicycle, the input mechanism can be driven by the flywheel to rotate. 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 change mechanism through the gear shifting control mechanism or controlling the clutch between the speed change 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 and an elastic reset member, the centrifugal block is generally rotatably connected to the hub, and the clutch control unit is connected to the centrifugal block. 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. Just because the elastic reset piece is needed to provide restoring force to drive the centrifugal block to reset, the centrifugal block can be thrown outwards only when the centrifugal force applied to the centrifugal block at each time needs to overcome the restoring force applied to the centrifugal block by the elastic reset piece.

However, the restoring force of the elastic reset piece applied to the centrifugal block in the prior art is constant, so that the restoring force is realized at the same rotating speed every time the automatic internal transmission shifts gears. However, the rider's demands for gear shifting are different, and in some cases, the rider needs to perform gear shifting in a relatively low speed state. In some cases, the rider needs to shift at a higher speed. The automatic inner speed changer in the prior art can not meet different riding requirements of riders.

SUMMERY OF THE UTILITY MODEL

The automatic internal transmission solves the technical problems that in the automatic internal transmission in the prior art, the restoring force borne by a centrifugal block is constant, so that automatic gear shifting and speed changing are realized at the same rotating speed, and different riding requirements of riders cannot be met. The utility model provides an automatic internal transmission, its realization that can be stable is adjusted the restoring force that the centrifugal piece received to make automatic gear shift variable speed realize under different rotational speeds according to the demand, the different demands of riding passerby can be better satisfied.

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 and an elastic resetting piece;

the centrifugal block is connected with the output mechanism, the clutch control unit is connected with the centrifugal block, 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 elastic reset piece is used for providing restoring force for the centrifugal block through self elasticity so as to restore and keep the centrifugal block in a state;

the adjusting mechanism comprises an adjusting gear ring and an adjusting gear;

the adjusting gear ring is connected with the elastic reset piece, and a tooth part extending along the circumferential direction is arranged on the adjusting gear ring;

the adjusting gear is meshed with the tooth part, and the adjusting gear can drive the adjusting gear ring to rotate, so that the deformation state of the elastic reset piece is changed, and the restoring force of the centrifugal block is changed.

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

the centrifugal block mounting seat is connected with the output mechanism;

the control piece is respectively connected with the centrifugal block and the clutch control unit;

the centrifugal block is rotatably arranged on the centrifugal block mounting seat, and the centrifugal block is connected with the clutch control unit through the control piece.

Preferably, the adjusting gear is rotatably mounted on the centrifugal block mounting base;

and two ends of the elastic resetting piece are respectively connected with the control piece and the adjusting gear ring.

Preferably, the centrifugal block is rotatably mounted on the centrifugal block mounting seat through a centrifugal block rotating shaft, and the centrifugal block is connected with the control piece through a centrifugal block output shaft;

the centrifugal block mounting seat is located between the centrifugal block and the control piece, and an avoiding groove for avoiding the centrifugal block output shaft is formed in the centrifugal block mounting seat.

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

the first adsorption part is used for adsorbing the second adsorption part so as to keep the state of the control part after rotation.

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

Preferably, the adjusting gear comprises a gear part, a sealing part and an adjusting part which are connected in sequence;

the gear part is meshed with the tooth part;

the sealing part is in sealing fit with the hole wall of the mounting hole;

the adjusting part is far away from the surface of one side of the gear part and is provided with an adjusting hole.

Preferably, the elastic restoring member is a spiral spring.

Preferably, the speed change mechanism comprises a one-way clutch, a first planetary gear train and a second planetary gear train which are sequentially arranged along the axial direction, the one-way clutch is positioned at one side close to the input mechanism, and the clutch control unit is used for controlling the combination of the first planetary gear train, the second planetary gear train and the output mechanism.

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 and an elastic resetting piece; the centrifugal block is connected with the output mechanism, the clutch control unit is connected with the centrifugal block, 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 elastic resetting piece is used for providing restoring force for the centrifugal block through self elastic force so as to restore and keep the centrifugal block in a state; the adjusting mechanism comprises an adjusting gear ring and an adjusting gear; the adjusting gear ring is connected with the elastic reset piece, and a tooth part extending along the circumferential direction is arranged on the adjusting gear ring; the adjusting gear is meshed with the tooth part, and the adjusting gear can drive the adjusting gear ring to rotate, so that the deformation state of the elastic reset piece is changed, and the restoring force of the centrifugal block is changed. Therefore, a rider can adjust the adjusting gear ring through the adjusting gear according to the riding requirement of the rider, and the deformation state of the elastic reset piece is changed through the adjusting gear ring, so that the restoring force applied to the centrifugal block is changed, the automatic inner speed changer can realize automatic gear shifting and speed changing at different rotating speeds, and the riding requirement of the rider is better met. And, automatic internal transmission through adopting adjusting gear with adjust ring gear complex structure, let overall structure simpler, stability in the accommodation process is better simultaneously, better guarantee to the regulation of elasticity piece that resets, further improvement ride passerby's experience of riding.

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 embodiments or the prior art descriptions will be briefly described below, it is obvious that 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 creative efforts.

FIG. 1 is a schematic illustration in cross-section 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 of 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 diagram of a centrifugal block and a centrifugal block mounting seat of the automatic internal transmission shown in FIG. 1;

FIG. 5 is a schematic perspective view of the centrifugal block shown in FIG. 4;

FIG. 6 is a perspective view of the adjustment gear of FIG. 2;

FIG. 7 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. 8 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. 9 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. 10 is a perspective view of a portion of the components of the automatic inner transmission illustrated in FIG. 1;

FIG. 11 is a cross-sectional schematic view of an alternate angle of the automatic internal transmission of FIG. 1;

FIG. 12 is a cross-sectional schematic view of an alternate 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 specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

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 and an elastic resetting piece; the centrifugal block is connected with the output mechanism, the clutch control unit is connected with the centrifugal block, 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 elastic reset piece is used for providing restoring force for the centrifugal block through self elasticity so as to restore and keep the centrifugal block in a state; the adjusting mechanism comprises an adjusting gear ring and an adjusting gear; the adjusting gear ring is connected with the elastic reset piece, and a tooth part extending along the circumferential direction is arranged on the adjusting gear ring; the adjusting gear is meshed with the tooth part, and the adjusting gear can drive the adjusting gear ring to rotate, so that the deformation state of the elastic reset piece is changed, and the restoring force of the centrifugal block is changed. Therefore, a rider can adjust the adjusting gear ring through the adjusting gear according to the riding requirement of the rider, and the deformation state of the elastic reset piece is changed through the adjusting gear ring, so that the restoring force applied to the centrifugal block is changed, the automatic inner speed changer can realize automatic gear shifting and speed changing at different rotating speeds, and the riding requirement of the rider is better met. And, automatic internal transmission through adopting adjusting gear with adjust ring gear complex structure, let overall structure simpler, stability in the accommodation process is better simultaneously, better guarantee to the regulation of elasticity piece that resets, further improvement ride passerby's experience of riding.

Example one

Referring to fig. 1 to 12, 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 transmission 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 output mechanism 30 is a hub, the input mechanism 20 is configured to be connected to pedals of the bicycle via a chain, and the output mechanism 30 is configured to be connected to a driving 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 and an elastic reset member 53. The centrifugal mass 51 is connected to the output mechanism 30, the clutch control unit 52 is connected to the centrifugal mass 51, and the centrifugal mass 51 is rotatable with respect to the output mechanism 30, so that the rotational state of the clutch control unit 52 is changed to transmit the driving force transmitted from the input mechanism 20 to the output mechanism 30 via a corresponding one of a plurality of power transmission paths in the shift 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 to the output mechanism 30, and the driving force input by the input mechanism 20 is transmitted to the output mechanism 30 through the clutch control unit 52, thereby changing the power transmission path in the automatic inner transmission 100 and realizing the gear shifting in the automatic inner transmission 100. 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 disposed in the transmission mechanism 40 for controlling the mutual coupling of the components of the transmission 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 elastic reset piece 53 is used for providing restoring force for the centrifugal block 51 through self 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 block 51 can only be "thrown out" outward by the centrifugal force having to overcome the restoring force applied to the centrifugal block 51 by the elastic restoring member 53, and then the clutch control unit 52 can only be driven to rotate in place, so as to realize gear shifting. It should be noted that the restoring force applied by the elastic restoring member 53 to the centrifugal mass 51 may be directly or indirectly applied to the centrifugal mass 51. If the elastic reset piece 53 can be directly connected with the centrifugal block 51, the elastic reset piece 53 can directly act on the centrifugal block 51; or the elastic reset piece 53 can be connected with the clutch control unit 52, so that the elastic reset piece 53 can directly act on the clutch control unit 52 and indirectly provide the restoring force to the centrifugal block 51 through the clutch control unit 52; even the elastic return element 53 can be connected to other intermediate elements, acting on the centrifugal mass 53 through these latter; that is, it is only necessary that the elastic restoring member 53 can act on the centrifugal block 53 by the restoring force provided by its own elastic force. Moreover, the restoring force may be 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 gear ring 61 and an adjusting gear 62, the adjusting gear ring 61 is connected with the elastic reset piece 53, and a tooth part 611 extending along the circumferential direction is arranged on the adjusting gear ring 61. That is, the adjusting gear ring 61 is provided with a tooth portion 611, and the tooth portion 611 extends in the circumferential direction of the adjusting gear ring 61. The adjusting gear 62 is engaged with the tooth portion 611, and the adjusting gear 62 can drive the adjusting gear ring 61 to rotate, so as to change the deformation state of the elastic restoring member 53, and change the restoring force applied to the centrifugal block 51. That is, the adjusting gear 62 is configured to provide a driving force to the adjusting ring gear 61, so that the adjusting ring gear 61 rotates, and the adjusting ring gear 61 applies a force to the elastic restoring member 53, so that the elastic restoring member 53 deforms, and a deformation state of the elastic restoring member 53 is changed. So that the restoring force applied by the elastic restoring member 53 to the centrifugal block 51 is changed, and thus the centrifugal block 51 can be "thrown" outward by a smaller centrifugal force (or the centrifugal block 51 can be "thrown" outward by a larger centrifugal force). That is to say, in this embodiment, the adjusting ring gear 61 can rotate 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 adjusting gear 62 is used for providing a driving force to the adjusting gear 61 to drive the adjusting gear 61 to operate. The adjusting gear 62 may provide a driving force for the adjusting gear ring 61 by manual driving, or the adjusting gear 62 may provide a driving force for the adjusting gear ring 61 by automatic driving, that is, the adjusting gear ring 61 can be driven to rotate by the adjusting gear 62.

It can be understood that, in the automatic internal transmission of the prior art, the elastic reset member is directly connected to the hub, and the restoring force exerted by the elastic reset member on the centrifugal block is constant, so that each time the centrifugal block is "thrown out", the shifting and speed changing of the automatic internal transmission are all realized at the same rotating speed. Different riders have different requirements on gear shifting and speed changing, and if some riders need to be in a low-speed state, the centrifugal block can be thrown out to realize gear shifting and speed changing; and some riders need to throw the centrifugal block out in a relatively high state to realize gear shifting and speed changing. The prior art automatic internal transmissions do not meet this portion of the rider's needs and have limitations.

In contrast, the automatic internal transmission 100 according to the present embodiment is configured such that the adjustment ring gear 61 is connected to the elastic restoring member 53, and the adjustment gear 62 is configured to drive the adjustment ring gear 61 to rotate. Therefore, according to actual needs, the rider can apply a driving force to the adjusting ring gear 61 through the adjusting gear 62 to "compress" or "release" the elastic resetting piece 53, so as to change the restoring force applied by the elastic resetting piece 53 to the centrifugal block 51 (or change the resistance applied by the elastic resetting piece 53 to the centrifugal block 51). When the bicycle is ridden, the centrifugal block 51 can be thrown out in a low-speed state; alternatively, the centrifugal mass 51 may be "thrown" at a higher speed. The automatic inner speed changer 100 can adjust the elastic force of the elastic reset piece 53, so that different riding requirements of riders can be better met.

In addition, in this embodiment, the adjusting mechanism 60 adopts the structure of the adjusting gear ring 61 and the adjusting gear 62, so that the overall structure is simpler, the stability in the adjusting process is better, and the adjustment of the elastic resetting piece 53 is better ensured. Simultaneously, adjust ring gear 61 with can realize interlocking between the regulating gear 62, the guarantee that can be further right the elasticity resets the stability that 53 adjusted, and further improvement rides passerby's the experience of riding.

Specifically, in this embodiment, the tooth portion 611 is opened on the inner side of the adjusting ring gear 61, that is, the adjusting ring gear 61 is an annular gear structure.

Preferably, the automatic shift control mechanism 50 further includes a centrifugal block mounting seat 54 and a control member 55, the centrifugal block mounting seat 54 is connected to the output mechanism 30, and the control member 55 is respectively connected to the centrifugal block 51 and the clutch control unit 52. The centrifugal block 51 is rotatably mounted on the centrifugal block mounting seat 54, and the centrifugal block 51 is connected with the clutch control unit 52 through the control member 55. That is, in this embodiment, the centrifugal block 51 is indirectly connected to the output mechanism 30, specifically: the centrifugal block 51 is rotatably mounted on the centrifugal block mounting seat 54, and the centrifugal block mounting seat 54 is connected with the output mechanism 30, so that the centrifugal block 51 is connected with the output mechanism 30 through the centrifugal block mounting seat 54. The centrifugal block 51 is indirectly connected with the clutch control unit 52, specifically: the centrifugal block 51 is connected with the control member 55, the control member 55 is connected with the clutch control unit 52, and thus the centrifugal block 51 is connected with the clutch control unit 52 through the control member 55. In this embodiment, the centrifugal block mounting seat 54 and the control member 55 are provided, so that the centrifugal block 51 is convenient to mount, the centrifugal block 51 can be better ensured to drive the clutch control unit 52, and the automatic gear shifting of the automatic internal transmission 100 is better ensured.

Preferably, the adjusting gear 62 is rotatably mounted on the centrifugal block mounting base 54, and two ends of the elastic resetting member 53 are respectively connected with the control member 55 and the adjusting gear ring 61. That is, in this embodiment, the elastic restoring member 53 is indirectly connected to the centrifugal block 51, and indirectly provides the restoring force for the centrifugal block 51, specifically: the elastic restoring member 53 is connected to the control member 55, and the control member 55 is connected to the centrifugal block 51, so that the elastic restoring member 53 directly applies the restoring force to the control member 55, and then applies the restoring force to the centrifugal block 51 through the control member 55. In this embodiment, the adjusting gear 62 is rotatably mounted on the centrifugal block mounting base 54, so that the adjusting gear 62 is conveniently mounted, the mounting position of the adjusting gear 62 can be better ensured, the relative position relationship between the adjusting gear 62 and the adjusting gear ring 61 is better ensured, and the stability of the adjusting gear 62 in adjusting the adjusting gear ring 61 is ensured.

Preferably, the centrifugal block 51 is rotatably mounted on the centrifugal block mounting seat 54 through a centrifugal block rotating shaft 511, and the centrifugal block 51 is connected with the control member 55 through a centrifugal block output shaft 512. The centrifugal block mounting seat 54 is located between the centrifugal block 51 and the control member 55, and an avoiding groove 541 for avoiding the centrifugal block output shaft 512 is formed on the centrifugal block mounting seat 54. 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 through 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.

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, the centrifugal block mounting seat 54 is provided with a first suction piece 56, and the control piece 55 is provided with a second suction piece 57. The first suction member 56 is used to suck the second suction member 57 to maintain the rotated state of the control member 55. That is to say, centrifugal piece mount pad 54 be provided with corresponding adsorption element on the control 55, work as control 55 is in after the drive of centrifugal piece 51 is rotated, through centrifugal piece mount pad 54 corresponding adsorption element on the control 55 can provide extra adsorption affinity, lets control 55 centrifugal piece 51 keep the state to after the gear shift, can let the better maintenance of gear shift, after the guarantee gear shift, the steady of gear.

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 block 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 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.

Correspondingly, in this embodiment, two first suction parts 56 are provided, the two first suction parts 56 are divided into a first iron part 561 and a second iron part 562, and the first iron part 561 and the second iron part 562 are circumferentially disposed at different positions on the centrifugal block mounting base 54. The two second adsorption members 57 are provided, the two second adsorption members 57 are divided into a first magnet 571 and a second magnet 572, the first magnet 571 and the second magnet 572 are circumferentially provided at different positions on the control member 55, the first magnet 571 is provided corresponding to the first iron member 561, and the second magnet 572 is provided corresponding to the second iron member 562. As shown in fig. 8, when the centrifugal mass 51 is partially "thrown out" and the automatic internal transmission 100 is in the "second gear" state, the first magnet 571 correspondingly attracts the first iron member 561 by magnetic force, so that the automatic internal transmission 100 is maintained in the "second gear" state. As shown in fig. 9, when the centrifugal mass 51 is completely "thrown out" and the automatic internal transmission 100 is in the "third gear" state, the second magnet 572 correspondingly attracts the second iron piece 572 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 other embodiments, a magnet may be used as the first suction member 56, and an iron member may be used as the second suction member 57, so that the first suction member 56 and the second suction member 57 can be sucked together. 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 control member 55 maintains a state to more precisely shift the automatic internal transmission 100. Specifically, in this embodiment, the first iron 561 is a spring assembly, and when the centrifugal force applied to the centrifugal block 51 increases, the first magnet 571 can apply a force to the first iron 561 to compress the first iron 561, so that the first iron 561 moves, and thus the first iron 561 does not affect the shift of the automatic internal transmission 100 into 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. If the automatic internal transmission 100 is a second-speed automatic internal transmission, the first suction member 56 and the second suction member 57 may be provided one by one.

It can be understood that, as more parts of the centrifugal block mounting seat 54 and the control member 55 need to be mounted and connected, the assembly space is reduced, and the assembly difficulty is increased, so that the assembly precision is affected, and the normal stable operation of the automatic internal transmission 100 is affected.

In order to solve the above problem, in the present embodiment, two centrifugal block mounting seats 54 and two control pieces 55 are respectively provided. The centrifugal block 51 is located between the two centrifugal block mounting seats 54, and the centrifugal block 51 is also located between the two control members 55. Namely, two centrifugal block mounting seats 54 are located at two opposite sides of the centrifugal block 51, and two control members 55 are located at two opposite sides of the centrifugal block 51. Specifically, the two centrifugal block mounting seats 54 are divided into a first centrifugal block mounting seat 542 and a second centrifugal block mounting seat 543, and the two control members 55 are divided into a first control member 551 and a second control member 552. The first control member 551 is connected to the clutch control unit 52, the first suction member 56 is disposed on the second centrifugal mounting seat 543, and the second suction member 57 is disposed on the second control member 552. The centrifugal block output shaft 512 is connected with the first control part 551 and the second control part 552, so that the first control part 551 and the second control part 552 can be ensured to rotate synchronously. The centrifugal block 51 may be rotatably mounted to the first centrifugal block mounting seat 542 through the centrifugal block rotation shaft 511. Through the structure, the parts can be modularly and gradually arranged in the hub during assembly, the installation difficulty is reduced, more installation space is provided for the installation of the parts, the assembly difficulty is reduced, the assembly precision is improved, and meanwhile, the normal operation of the automatic inner transmission 100 cannot be influenced.

Preferably, a mounting hole is formed in the output mechanism 30, the mounting hole axially penetrates through the output mechanism 30, and the adjusting gear 62 is in sealing fit with the hole wall of the mounting hole. Wherein, the sealing fit of the adjusting gear 62 and the hole wall of the mounting hole means that: the outer wall of adjusting gear 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 adjustment gear 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, and the installation hole is opened in the end cover 32.

Preferably, the adjusting gear 62 includes a gear portion 621, a sealing portion 622, and an adjusting portion 623 connected in sequence, the gear portion 621 is engaged with the tooth portion 611, the sealing portion 622 is in sealing fit with a hole wall of the mounting hole, and an adjusting hole 6231 is formed in a surface of the adjusting portion 623 on a side 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 adjustment of the adjustment gear 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 further configured to control the engagement between the second planetary gear train 43 and the output mechanism 30, so as 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 control column on the first control 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 control member 551 to rotate, so that the first control member 551 drives the first control device 523 to rotate, the first control device 523 drives the first clutch 521 to rotate, and the first planetary gear train 42 is coupled to the output mechanism 30 through the first clutch 521, 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 drives the first control member 551 to rotate further, so that the first control member 551 drives the second control device 524 to rotate, and 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 inner transmission, which may be the automatic inner transmission 100 described above. The automatic internal transmission is mounted on a drive 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 a driving force is output from a rider to a rear wheel through pedals, and the automatic inner 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 gear ring and an adjusting gear;

2. The automatic internal transmission of claim 1, wherein said automatic shift control mechanism further comprises a centrifugal mass mount and a control member;

the centrifugal block mounting seat is connected with the output mechanism;

3. The automatic internal transmission of claim 2, wherein said adjustment gear is rotatably mounted to said eccentric mass mount;

4. The automatic internal transmission of claim 2, wherein the centrifugal mass is rotatably mounted to the centrifugal mass mounting base by a centrifugal mass rotation shaft, and the centrifugal mass is connected to the control member by a centrifugal mass output shaft;

5. The automatic internal transmission of claim 2, wherein a first suction member is disposed on the centrifugal mass mount, and a second suction member is disposed on the control member;

6. The automatic inner transmission according to any one of claims 1 to 5, wherein a mounting hole is formed in the output mechanism, the mounting hole is axially arranged through the output mechanism, and the adjusting gear is in sealing fit with a hole wall of the mounting hole.

7. The automatic internal transmission according to claim 6, wherein the adjusting gear includes a gear portion, a seal portion, and an adjusting portion connected in this order;

the gear part is meshed with the tooth part;

the sealing part is in sealing fit with the hole wall of the mounting hole;

8. The automatic internal transmission of claim 1, wherein said resilient return member is a volute spring.

9. The automatic internal transmission of claim 1, wherein said variator includes a one-way clutch, a first planetary gear train and a second planetary gear train arranged in an axial direction in this order, said one-way clutch being located on a side close to said input mechanism, said clutch control unit being configured to control engagement between said first planetary gear train, said second planetary gear train and said output mechanism.

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.