Adjustable lifting seat tube mechanism and bicycle

Abstract

The utility model discloses a kind of adjustable lifting seat tube mechanism and bicycle, including first pipe component, second pipe component, piston device and driving device, piston chamber is formed in the inside of first pipe component;Second pipe component is configured to be nested in first pipe component and slide along its axial direction;Piston device is movably configured in piston chamber, and first chamber and second chamber are separated into piston chamber, second pipe component is linked with piston device by a linkage component;Driving device is configured to drive piston device to open first chamber and second chamber;Driving device includes linkage component, deflection component and output component, linkage component is movably configured in first pipe component;Deflection component is configured to swing;Output component is used to drive output component to swing;Output component drives swing component to swing, to drive linkage component to open first chamber and second chamber by piston device;The scheme is relative to prior art, realizes the significant promotion of seat tube height adjustment mechanical gain and operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of bicycles, and in particular to an adjustable lifting seat post mechanism and a bicycle. Background Technology

[0002] In cycling, flexible seatpost height adjustment is crucial for adapting to different riding scenarios (such as climbing, descending, or flat roads). Traditional mechanical dropper seatposts often use a knob-locking mechanism, requiring manual loosening of the clamp to adjust the saddle height, followed by re-locking to fix the position. This design has significant drawbacks: the operation requires interrupting riding and bending over, resulting in low adjustment efficiency; the clamp's locking force is susceptible to mechanical wear, potentially loosening over time and causing unexpected changes in saddle height, affecting riding safety.

[0003] To improve ease of operation, hydraulically assisted seat post lifting systems are gradually becoming the mainstream technology. These systems utilize a hydraulic system composed of piston cylinders and pistons to achieve stepless lifting of the seat post using fluid pressure differences. However, existing hydraulic drive devices generally suffer from complex structures and poor user experience.

[0004] Therefore, it is necessary to propose a new technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0005] To solve the above problems, this utility model provides an adjustable lifting seat post mechanism and bicycle, which simplifies the structure of the lifting seat post.

[0006] This utility model provides an adjustable drop seat post mechanism for bicycles, comprising: The first tube component has a piston chamber formed inside it; The second tube member is configured to be nested within the first tube member and slide along its axial direction; A piston assembly is movably disposed within the piston chamber and divides the piston chamber into a first chamber and a second chamber, wherein the second tube member is linked to the piston assembly via a linkage member; A conductive member, movably disposed within the first pipe member; and An output component that drives the conducting component to move from a first position to a second position along a first direction; The output component drives the conducting component to move to the second position, so that the piston device connects the first chamber and the second chamber, allowing the piston device to move within the piston chamber, thereby causing the second tube component to slide axially relative to the first tube component under external force.

[0007] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0008] Optionally, the output component drives the conducting component through a transmission structure; The transmission structure is configured to convert the rotational motion output by the output member into the motion of the conducting member along a first direction.

[0009] Optionally, the transmission structure includes: A yaw member, configured to oscillate about a fixed axis by the output member; The output component drives the yaw component to yaw, thereby moving the conducting component from the first position to the second position along the first direction.

[0010] Optionally, the driving device further includes: A swing member, fixedly connected to the output shaft of the output member, the swing member being configured to swing about a predetermined axis; and A connecting arm, one end of which is pivotally connected to the oscillating member, and the other end of which is pivotally connected to the swinging member.

[0011] Optionally, the yaw member abuts against the conductive member; During the oscillation process, the oscillating component abuts against the conducting component, causing it to move from the first position to the second position along the first direction.

[0012] Optionally, the adjustable lifting seat tube mechanism further includes a base fixedly connected to the second tube member; The oscillating member is pivotally connected to the base, the output member is fixedly connected to the base, and the linkage member is fixedly connected to the base.

[0013] Optionally, the transmission structure includes: A lead screw, configured to be driven to rotate by the output member; The lifting component is threadedly driven by the lead screw and moves from the third position to the fourth position along the first direction; When the lifting component moves from the third position to the fourth position, it will drive the linkage component to move from the first position to the second position.

[0014] Optionally, the output component drives the lead screw to rotate via a gear set.

[0015] Optionally, the lifting component includes: A threaded sleeve that engages with the threaded screw; An anti-rotation element is configured to restrict the threaded sleeve from rotating with the lead screw.

[0016] Optionally, the adjustable lifting seat tube mechanism further includes a base fixedly connected to the second tube member; The anti-rotation element is fixed to the threaded sleeve, and the base has an anti-rotation groove that mates with the anti-rotation element; or The anti-rotation member is fixed to the base, and the threaded sleeve has an anti-rotation groove that mates with the anti-rotation member.

[0017] Optionally, the lifting component further includes a pushing member, which is fixed to the threaded sleeve and abuts against the guiding component.

[0018] Optionally, the adjustable lifting seat tube mechanism further includes an operation button for controlling the output component.

[0019] Optionally, the piston device includes: A piston body having a connecting channel that allows the first chamber to communicate with the second chamber; A piston core, movably disposed within the piston body, has a sealed state that seals the communicating channel and an open state that opens the communicating channel; and An elastic member configured to keep the piston core in a sealed state; The conductive component cooperates with the piston core, and the linkage component is fixedly connected to the piston body.

[0020] This utility model also provides a bicycle, including the adjustable lifting seat post mechanism described in any of the above.

[0021] This utility model discloses an adjustable lifting seat post mechanism and a bicycle. Compared with the traditional threaded adjustment or hydraulic button design, the adjustable lifting seat post mechanism uses the driving force output by the output component to connect the piston device to the first chamber and the second chamber, avoiding the use of complex hydraulic pipelines and significantly improving the system reliability and maintenance convenience. Attached Figure Description

[0022] Figure 1 A schematic diagram of an adjustable drop seat post mechanism for a bicycle, provided as an embodiment of this utility model; Figure 2 for Figure 1 Schematic diagram of the adjustable lifting seat tube mechanism; Figure 3 for Figure 1 Cross-sectional view of the adjustable lifting seat tube mechanism; Figure 4 for Figure 3 A magnified structural diagram of part A in the diagram; Figure 5 for Figure 3 A schematic diagram of the enlarged structure of part B in the diagram; Figure 6 for Figure 3 A schematic diagram of the enlarged structure of part C in the diagram; Figure 7 for Figure 1 Partial sectional view of the adjustable lifting seat tube mechanism; Figure 8 for Figure 1 Partial sectional view of the adjustable lifting seat tube mechanism; Figure 9 This is a schematic diagram of the adjustable lifting seat tube mechanism in another embodiment of the present invention; Figure 10 for Figure 9 Cross-sectional view of the adjustable lifting seat tube mechanism; Figure 11 for Figure 10 A structural diagram of the output component, transmission structure, and fixed plate; Figure 12 for Figure 10 The structural diagram of the fixed plate is omitted in the middle; Figure 13 for Figure 11 Sectional view in; Figure 14 for Figure 11 The sectional view in the image.

[0023] The annotations in the figure are explained as follows: 100. Adjustable lifting seat post mechanism; 10. First tube component; 11. Inner tube; 111. Piston chamber; 1111. First chamber; 1112. Second chamber; 112. Threaded section; 12. Outer tube; 13. Sliding channel; 14. Fixing component; 15. Locking nut; 20. Second pipe component; 30. Piston assembly; 31. Piston body; 311. Communicating channel; 312. Valve port; 3121. First section; 3122. Second section; 3123. Third section; 32. Piston core; 321. Sliding section; 322. Sealing section; 323. Reduction section; 33. Elastic component; 34. Annular retaining ring; 40. Base; 41. Mounting cavity; 42. Operating button; 43. Fixing plate; 50. Conducting component; 51. Driving end; 52. Driven end; 60. Linking components; 61. Sliding cavity; 70. Output component; 71. Transmission structure; 711. Oscillating component; 712. Swinging component; 713. Connecting arm; 714. Lead screw; 715. Lifting component; 7151. Threaded sleeve; 7152. Anti-rotation component; 7153. Anti-rotation groove; 7154. Pushing component; 716. Gear set; 7161. First gear; 7162. Second gear; 7163. Third gear; 7164. Fourth gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] like Figures 1 to 8As shown, this utility model provides an adjustable drop seatpost mechanism 100 for bicycles, including a first tube member 10, a second tube member 20, a piston device 30, a conducting member 50, and an output member 70. The first tube member 10 has a piston chamber 111 formed inside it. The second tube member 20 is configured to be nested within the first tube member 10 and slide along its axial direction. The piston device 30 is movably disposed within the piston chamber 111 and divides the piston chamber 111 into a first chamber 1111 and a second chamber 1112. The second tube member 20 is connected by a linkage... Component 60 is linked to the piston device 30; the connecting component 50 is movably disposed on the first tube component 10; the output component 70 drives the connecting component 50 to move from a first position to a second position along a first direction; wherein, the output component 70 drives the connecting component 50 to move to the second position, so that the piston device 30 connects the first chamber 1111 and the second chamber 1112, so as to allow the piston device 30 to move in the piston chamber 111, thereby causing the second tube component 20 to be driven by an external force to slide axially relative to the first tube component 10.

[0028] When the user triggers the output component 70, the output component 70 drives the conducting component 50 to move from the first position to the second position along the first direction. At this time, the conducting component 50 causes the piston device 30 to connect the first chamber 1111 and the second chamber 1112 until the conducting component 50 moves to the second position. At this time, the piston device 30 completely connects the first chamber 1111 and the second chamber 1112. When the second tube component 20 is pulled or pressed, the piston device 30 moves in the piston chamber 111. At this time, the liquid in the first chamber 1111 will enter the second chamber 1112 or the liquid in the second chamber 1112 will enter the first chamber 1111. When the position of the second tube component 20 is adjusted to the correct position, the piston device 30 will continue to seal the fluid passage between the first chamber 1111 and the second chamber 1112.

[0029] The adjustable seat post mechanism 100 significantly improves the mechanical gain and operational convenience of seat post height adjustment. Compared to traditional threaded adjustment or hydraulic button designs, the adjustable seat post mechanism 100 uses the driving force output by the output component 70 to connect the piston device 30 to the first chamber 1111 and the second chamber 1112, avoiding the use of complex hydraulic pipelines and significantly improving system reliability and maintenance convenience. Furthermore, the second pipe component 20 and the piston device 30 are linked by the linkage component 60, ensuring the synchronization and stability of the height adjustment of the adjustable seat post mechanism 100.

[0030] In this embodiment, as Figures 1 to 3As shown, the first tube component 10 is rigidly connected to the frame body by welding or bolting. The first tube component 10 includes an inner tube 11 and an outer tube 12 arranged coaxially, with a piston chamber 111 located inside the inner tube 11; the outer tube 12 is coaxially sleeved on the outside of the inner tube 11, and there is a sliding channel 13 between the outer tube 12 and the inner tube 11 for sliding the second tube component 20. The bottom of the outer tube 12 is fixedly connected to the bottom of the inner tube 11; specifically, a fixing member 14 is embedded in the bottom of the outer tube 12, which is fixedly connected to the outer tube 12 by interference fit or welding, and the fixing member 14 has a through hole; the bottom of the inner tube 11 has a threaded section 112, which extends out after passing through the through hole of the fixing member 14, and is locked to the fixing member 14 by a locking nut 15.

[0031] In this embodiment, as Figure 3 As shown, the first chamber 1111 and the second chamber 1112 are filled with hydraulic oil; the first chamber 1111 and the second chamber 1112 are arranged along the axial direction of the inner tube 11; the first chamber 1111 is located below the second chamber 1112. Along the axial direction of the inner tube 11, the length of the first chamber 1111 and the length of the second chamber 1112 vary according to the position of the piston device 30; along the axial direction of the inner tube 11, the chamber below the piston device 30 is the first chamber 1111, and the chamber above it is the second chamber 1112.

[0032] In this embodiment, as Figures 1 to 8 As shown, the second tube component 20 is fixed relative to the seat; the second tube component 20 is cylindrical; the second tube component 20 is sleeved on the outside of the inner tube 11 and can slide along the sliding channel 13. When the user operates the drive device to connect the first chamber 1111 and the second chamber 1112, the second tube component 20 can slide along the axial direction of the first tube component 10 by pulling or pressing the seat, thereby achieving stepless height adjustment.

[0033] In this embodiment, as Figure 3 and Figure 5 As shown, the piston device 30 includes a piston body 31, a piston core 32, and an elastic member 33. The piston body 31 has a communicating channel 311, which allows the first chamber 1111 to communicate with the second chamber 1112. The piston core 32 is movably disposed on the piston body 31 and has a sealed state that seals the communicating channel 311 and an open state that opens the communicating channel 311. The elastic member 33 is configured to drive the piston core 32 to remain in the sealed state. The communicating member 50 cooperates with the piston core 32, and the linkage member 60 is fixedly connected to the piston body 31.

[0034] In the non-operating state, the elastic member 33 drives the piston core 32 to seal the communication channel 311 through elastic force, blocking the fluid passage between the first chamber 1111 and the second chamber 1112. When the output member 70 drives the conducting member 50 to move from the first position to the second position along the first direction, the conducting member 50 can push the piston body 31 to move in a way that compresses the elastic member 33 until the piston core 32 opens the communication channel 311. When the driving device is stopped, the thrust of the conducting member 50 on the piston body 31 disappears, the elastic member 33 releases the stored elastic potential energy, and pushes the piston body 31 to move in the opposite direction until the piston core 32 re-seals the communication channel 311.

[0035] In this embodiment, as Figure 3 and Figure 5 As shown, piston body 31 is the main component of piston assembly 30; piston body 31 is cylindrical or stepped shaft-shaped. A sealing ring is provided between piston body 31 and the inner wall of piston chamber 111 to achieve radial sealing between piston body 31 and piston chamber 111. Piston body 31 is provided with valve hole 312 extending axially along piston body 31, and at least a portion of piston core 32 is located in valve hole 312 and slides along valve hole 312. The outlet of communication channel 311 is located on the side wall of piston body 31, and the inlet is connected to valve hole 312; piston core 32 opens and closes communication channel 311 by opening and closing valve hole 312.

[0036] In this embodiment, as Figure 3 and Figure 5 As shown, the piston core 32 includes a sliding section 321 and a sealing section 322. The sliding section 321 can slide along the valve hole 312. The sealing section 322 is located below the piston body 31 and can open and close the bottom of the valve hole 312. The sliding section 321 has a columnar structure. A sealing ring is provided between the valve hole 312 and the sliding section 321, and the inlet of the connecting channel 311 is located between the sealing ring and the piston core 32. The sealing section 322 has a frustum-shaped structure. The bottom of the valve hole 312 has a tapered hole that mates with the sealing section 322.

[0037] In this embodiment, as Figure 3 and Figure 5 As shown, the valve orifice 312 includes a first section 3121, a second section 3122, and a third section 3123 arranged from bottom to top. The first section 3121 cooperates with the sliding section 321 of the piston core 32, allowing the piston core 32 to slide along the first section 3121. A passage is formed between the second section 3122 and the piston core 32, with the inlet of the connecting channel 311 located on the side wall of the passage. The third section 3123 is a tapered orifice, and the passage can communicate with the tapered orifice. There may be no clear boundary between the first section 3121 and the second section 3122; as long as a passage is formed between the piston core 32 and the valve orifice 312, it can be considered as the second section 3122.

[0038] In this embodiment, as Figure 3 and Figure 5 As shown, the elastic member 33 is a spring; the spring is located in the second section 3122. The top of the spring abuts against the piston core 32, and the bottom abuts against the piston body 31. The piston core 32 forms a reduced diameter section 323 between the sliding section 321 and the sealing section 322. The spring is sleeved on the reduced diameter section 323, and the top of the spring abuts against the step formed between the sliding section 321 and the reduced diameter section 323. The piston body 31 is fixed with an annular retaining ring 34; the annular retaining ring 34 is snapped and fixed to the inner wall of the second section 3122; the bottom of the spring abuts against the annular retaining ring 34.

[0039] In this embodiment, as Figures 3 to 5 and Figure 7 Figure 8 As shown, the conductive member 50 has a rod-shaped structure; the conductive member 50 includes a driving end 51 that cooperates with the piston core 32 and a driven end 52 located outside the piston chamber 111; the driving end 51 abuts against or is fixedly connected to the top of the piston core 32.

[0040] In this embodiment, as Figures 3 to 8 As shown, the linkage member 60 has a rod-like structure; one end of the linkage member 60 is fixedly connected to the piston body 31, and the other end is fixedly connected to the second tube member 20, so that when the second tube member 20 slides along the first tube member 10, the second tube member 20 drives the piston body 31 to move within the piston chamber 111. The linkage member 60 and the top of the piston body 31 are fixedly connected by welding, threads, or screws. The linkage member 60 is hollow, so that a sliding cavity 61 is formed within the linkage member 60 for the sliding of the conductive member 50.

[0041] In this embodiment, as Figures 1 to 8 As shown, the adjustable lifting seat tube mechanism 100 also includes a base 40, which is fixedly connected to the second tube member 20 and to the seat. The base 40 has a mounting cavity 41 for accommodating the output member 70 to prevent the output member 70 from being exposed. The base 40 can be fixedly connected to the top of the second tube member 20 by welding, bolts, or threads; the output member 70 can be fixedly connected to the base 40 by screws, adhesive, or welding; and the linkage member 60 can be fixedly connected to the base 40 by threads, screws, or welding.

[0042] In this embodiment, as Figures 1 to 8As shown, the adjustable lifting seat post mechanism 100 also includes an operation button 42 for controlling the output component 70; the operation button 42 is located on the outside of the base 40; the user can control the opening and closing of the drive device through the operation button 42 for user convenience. There are two operation buttons 42, located on opposite sides of the base 40. The operation buttons 42 are rotary knobs, and their electrical connection to the output component 70 is existing technology and will not be further described here.

[0043] In this embodiment, as Figures 3 to 7 As shown, the output component 70 is a motor. The output component 70 drives the conducting component 50 through a transmission structure 71; the transmission structure 71 is configured to convert the rotational motion output by the output component 70 into the motion of the conducting component 50 along a first direction. By converting the rotational motion output by the motor into the linear motion of the conducting component 50, the transmission structure 71 achieves convenient control and operation of the bicycle adjustable seat post mechanism 100 in height adjustment.

[0044] In this embodiment, as Figures 3 to 7 As shown, the transmission structure 71 includes a sway member 711, which is driven by the output member 70 to oscillate about a fixed axis. The output member 70 drives the sway member 711 to sway, thereby moving the conducting member 50 from a first position to a second position along a first direction. The sway member 711 is located within the base 40 to prevent it from being exposed. The sway member 711 is pivotally connected to the base 40.

[0045] In this embodiment, as Figures 3 to 7 As shown, the swaying member 711 abuts against the conducting member 50; during the swaying process, the swaying member 711 abuts against the conducting member 50 and moves it from a first position to a second position along a first direction. The swaying member 711 has a rod-shaped structure, with its first end pivotally connected to the base 40, its second end driven by the output member 70, and its middle position abutting against the driven end 52 of the conducting member 50.

[0046] In this embodiment, as Figures 3 to 7 As shown, the driving device further includes a swing member 712 and a connecting arm 713. The swing member 712 is fixedly connected to the output shaft of the output member 70 and is configured to swing around a predetermined axis. One end of the connecting arm 713 is pivotally connected to the yaw member 711, and the other end is pivotally connected to the swing member 712. When the output member 70 is started, it generates a rotational torque, which is transmitted to the swing member 712, driving the swing member 712 to reciprocate around the predetermined axis. Subsequently, the swing member 712 drives the yaw member 711 to swing via the connecting arm 713.

[0047] In this embodiment, as Figures 3 to 7 As shown, both the swing member 712 and the connecting arm 713 are located within the base 40 to prevent them from being exposed. The swing member 712 is generally rod-shaped, with its first end sleeved on the outside of the output shaft of the output member 70 and fixedly connected to it. The first end of the connecting arm 713 is pivotally connected to the second end of the swing member 712, and its second end is pivotally connected to the first end of the oscillating member 711.

[0048] The adjustment process of the adjustable lifting seat post mechanism 100 is described below: When the user triggers the operation button 42 outside the base 40 to activate the output component 70, the output component 70 drives the swing component 712 to swing around a set axis. The swing component 712 drives the oscillating component 711 to swing synchronously through the connecting arm 713. The swinging motion of the oscillating component 711 presses against the conducting component 50, pushing the conducting component 50 to move downward, thereby pushing the piston body 31 to compress the elastic component 33, causing the piston core 32 to switch from a sealed state to an open state, opening the communication channel 311 between the first chamber 1111 and the second chamber 1112. At this time, by pulling or pressing the seat, the second tube component 20 slides along the axial direction of the first tube component 10, driving the linkage component 60 to move synchronously. The linkage component 60 further pulls the piston device 30 to move in the piston chamber 111, realizing the flow of hydraulic oil between the first chamber 1111 and the second chamber 1112, completing the stepless height adjustment.

[0049] Once the adjustment is complete, the output component 70 stops driving, the thrust of the conducting component 50 on the piston body 31 disappears, the elastic component 33 releases elastic potential energy to push the piston body 31 to reset, the piston core 32 reseals the connecting channel 311 to block the flow of hydraulic oil, and the second pipe component 20 is synchronously fixed with the piston device 30 to achieve stable locking of the seat tube height.

[0050] like Figures 1 to 14As shown, this utility model also provides an adjustable drop seatpost mechanism 100 for bicycles, including a first tube member 10, a second tube member 20, a piston device 30, a conducting member 50, and an output member 70. The first tube member 10 has a piston chamber 111 formed inside it. The second tube member 20 is configured to be nested within the first tube member 10 and slide along its axial direction. The piston device 30 is movably disposed within the piston chamber 111 and divides the piston chamber 111 into a first chamber 1111 and a second chamber 1112. The second tube member 20 is connected by a linkage... Component 60 is linked to the piston device 30; the connecting component 50 is movably disposed on the first tube component 10; the output component 70 drives the connecting component 50 to move from a first position to a second position along a first direction; wherein, the output component 70 drives the connecting component 50 to move to the second position, so that the piston device 30 connects the first chamber 1111 and the second chamber 1112, so as to allow the piston device 30 to move in the piston chamber 111, thereby causing the second tube component 20 to be driven by an external force to slide axially relative to the first tube component 10.

[0051] When the user triggers the output component 70, the output component 70 drives the conducting component 50 to move from the first position to the second position along the first direction. At this time, the conducting component 50 causes the piston device 30 to connect the first chamber 1111 and the second chamber 1112 until the conducting component 50 moves to the second position. At this time, the piston device 30 completely connects the first chamber 1111 and the second chamber 1112. When the second tube component 20 is pulled or pressed, the piston device 30 moves in the piston chamber 111. At this time, the liquid in the first chamber 1111 will enter the second chamber 1112 or the liquid in the second chamber 1112 will enter the first chamber 1111. When the position of the second tube component 20 is adjusted to the correct position, the piston device 30 will continue to seal the fluid passage between the first chamber 1111 and the second chamber 1112.

[0052] The adjustable seat post mechanism 100 significantly improves the mechanical gain and operational convenience of seat post height adjustment. Compared to traditional threaded adjustment or hydraulic button designs, the adjustable seat post mechanism 100 uses the driving force output by the output component 70 to connect the piston device 30 to the first chamber 1111 and the second chamber 1112, avoiding the use of complex hydraulic pipelines and significantly improving system reliability and maintenance convenience. Furthermore, the second pipe component 20 and the piston device 30 are linked by the linkage component 60, ensuring the synchronization and stability of the height adjustment of the adjustable seat post mechanism 100.

[0053] The specific structures and connections of the first pipe component 10, the second pipe component 20, the piston device 30, the linkage component 60, the conducting component 50, and the output component 70 are consistent with those in the aforementioned embodiments, and their technical features, functional implementation, and cooperative working methods have been fully described in the aforementioned embodiments. To avoid repetition, the detailed construction of the above components will not be described again in this embodiment.

[0054] In this embodiment, as Figures 9 to 10 As shown, the adjustable lifting seat tube mechanism 100 also includes a base 40, which is fixedly connected to the second tube member 20 and to the seat. The base 40 has a mounting cavity 41 for accommodating the output member 70 to prevent the output member 70 from being exposed. The base 40 can be fixedly connected to the top of the second tube member 20 by welding, bolts, or threads; the output member 70 can be fixedly connected to the base 40 by screws, adhesive, or welding; and the linkage member 60 can be fixedly connected to the base 40 by threads, screws, or welding.

[0055] In this embodiment, as Figures 9 to 10 As shown, the adjustable lifting seat post mechanism 100 also includes an operation button 42 for controlling the output component 70; the operation button 42 is located on the outside of the base 40; the user can control the opening and closing of the drive device through the operation button 42 for user convenience. There are two operation buttons 42, located on opposite sides of the base 40. The operation buttons 42 are rotary knobs, and their electrical connection to the output component 70 is existing technology and will not be further described here.

[0056] In this embodiment, as Figures 10 to 14 As shown, the output component 70 drives the conducting component 50 through a transmission structure 71; the transmission structure 71 is configured to convert the rotational motion output by the output component 70 into the motion of the conducting component 50 along a first direction. By converting the rotational motion output by the motor into the linear motion of the conducting component 50, the transmission structure 71 achieves convenient control and operation of the bicycle adjustable seat post mechanism 100 in height adjustment.

[0057] In this embodiment, as Figures 10 to 14As shown, the transmission structure 71 includes a lead screw 714 and a lifting member 715. The lead screw 714 is configured to rotate under the drive of the output member 70. The lifting member 715 is threadedly driven by the lead screw 714 and moves from a third position to a fourth position along a first direction. When the lifting member 715 moves from the third position to the fourth position, it drives the linkage member 60 to move from the first position to the second position. The threaded transmission between the lead screw 714 and the lifting member 715 achieves precise control, efficiently converting the rotational motion of the output member 70 into the linear motion of the lifting member 715, thereby driving the linkage member 60 to move synchronously. In addition, the lead screw 714 and the lifting member 715 automatically lock their positions after the lifting member 715 is adjusted to the correct position through the self-locking characteristic of the thread, improving the stability of the transmission structure 71.

[0058] In this embodiment, as Figures 10 to 14 As shown, the lead screw 714 is rotatably mounted within the base 40, with its rotation axis parallel to the first direction. The output component 70 drives the lead screw 714 to rotate via a gear set 716. Specifically, a first gear 7161 is coaxially fixedly mounted on the output shaft end of the output component 70, and a second gear 7162 is coaxially fixedly mounted on the end of the lead screw 714. Power transmission is achieved through direct or indirect meshing between the first gear 7161 and the second gear 7162. The gear set 716 also includes a third gear 7163 and a fourth gear 7164, which are coaxially fixedly connected. The third gear 7163 meshes with the first gear 7161, and the fourth gear 7164 meshes with the second gear 7162.

[0059] In this embodiment, as Figures 10 to 14 As shown, the lifting component 715 includes a threaded sleeve 7151 and an anti-rotation member 7152. The threaded sleeve 7151 is threadedly engaged with the lead screw 714; the anti-rotation member 7152 is configured to restrict the threaded sleeve 7151 from rotating with the lead screw 714. The anti-rotation member 7152 effectively restricts the threaded sleeve 7151 from rotating with the lead screw 714, ensuring the stability and reliability of the linear displacement of the threaded sleeve 7151.

[0060] In this embodiment, as Figures 10 to 14 As shown, the lifting component 715 also includes a pushing member 7154, which is fixedly connected to the threaded sleeve 7151 to ensure synchronous movement. The pushing member 7154 abuts against the guiding component 50, reducing the number of transmission components between the pushing member 7154 and the guiding component 50. When the lead screw 714 drives the threaded sleeve 7151 to move axially, the pushing member 7154 moves synchronously with the threaded sleeve 7151 and acts directly on the guiding component 50.

[0061] In this embodiment, as Figures 10 to 14As shown, the anti-rotation member 7152 is fixedly connected to the threaded sleeve 7151, and the base 40 has an anti-rotation groove 7153 that mates with the anti-rotation member 7152. When the lead screw 714 drives the threaded sleeve 7151 to rotate, the anti-rotation member 7152 and the sidewall of the anti-rotation groove 7153 form a constraint, effectively limiting the circumferential rotational freedom of the threaded sleeve 7151, forcing the threaded sleeve 7151 to only make stable linear displacement along the first direction. The anti-rotation member 7152 is a rod-shaped structure, and its axis is parallel to the first direction; the anti-rotation groove 7153 extends along the first direction, and its contour matches the shape of the anti-rotation member 7152 to form a mechanical limiting structure, preventing the threaded sleeve 7151 from rotating unexpectedly during transmission. The base 40 has a fixed plate 43, and an anti-rotation groove 7153 is located on the fixed plate 43. A pusher 7154 is located on the side of the fixed plate 43 facing away from the threaded sleeve 7151 and is fixedly connected to the anti-rotation member 7152. Alternatively, in other embodiments, the anti-rotation member 7152 is fixed to the base 40, and the threaded sleeve 7151 has an anti-rotation groove 7153 that mates with the anti-rotation member 7152. When the lead screw 714 drives the threaded sleeve 7151 to rotate, the anti-rotation member 7152 and the sidewall of the anti-rotation groove 7153 form a constraint, effectively limiting the circumferential rotational freedom of the threaded sleeve 7151, forcing the threaded sleeve 7151 to only make stable linear displacement along a first direction. The anti-rotation member 7152 is a rod-shaped structure, and its axis is parallel to the first direction. The anti-rotation groove 7153 extends along the first direction, and its contour matches the shape of the anti-rotation member 7152 to form a mechanical limiting structure, preventing the threaded sleeve 7151 from rotating unexpectedly during transmission. The base 40 has a fixing plate 43, and the anti-rotation member 7152 is fixed to the fixing plate 43.

[0062] The adjustment process of the adjustable lifting seat post mechanism 100 is described below: When the user triggers the operating button 42 outside the base 40 to start the output component 70, the output shaft of the output component 70 rotates in the forward direction to drive the lead screw 714 to rotate. The lead screw 714 drives the threaded sleeve 7151 to move along the first direction. The threaded sleeve 7151 simultaneously drives the pusher 7154 to move, thereby pushing the piston body 31 to compress the elastic component 33, so that the piston core 32 switches from the sealed state to the open state, opening the communication channel 311 between the first chamber 1111 and the second chamber 1112. At this time, by pulling or pressing the seat, the second tube component 20 slides along the axial direction of the first tube component 10, driving the linkage component 60 to move synchronously. The linkage component 60 further pulls the piston device 30 to move in the piston chamber 111, realizing the flow of hydraulic oil between the first chamber 1111 and the second chamber 1112, and completing the stepless height adjustment.

[0063] Once adjusted, the output shaft of the output component 70 rotates in the forward direction to drive the lead screw 714 to rotate. The lead screw 714 drives the threaded sleeve 7151 to move in the reverse direction along the first direction. The threaded sleeve 7151 simultaneously drives the pusher 7154 to move, thereby eliminating the thrust of the conducting component 50 on the piston body 31. The elastic component 33 releases its elastic potential energy to push the piston body 31 to reset. The piston core 32 reseals the connecting channel 311, blocking the flow of hydraulic oil. The second pipe component 20 is synchronously fixed with the piston device 30, achieving stable locking of the seat tube height.

[0064] like Figures 1 to 14 As shown, this utility model also provides a bicycle, including the adjustable lifting seat post mechanism 100 of the above embodiments. The first tube member 10 is fixed to the frame body by welding or bolting to form a rigid connection; the second tube member 20 is fixed to the seat by welding or bolting through the base 40 to form a rigid connection. When the user operates the drive device to make the first chamber 1111 and the second chamber 1112 connected, by pulling or pressing the seat, the second tube member 20 slides along the axial direction of the first tube member 10, realizing stepless height adjustment.

[0065] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0066] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An adjustable drop seatpost mechanism for bicycles, characterized in that, include: The first tube component has a piston chamber formed inside it; The second tube member is configured to be nested within the first tube member and slide along its axial direction; A piston assembly is movably disposed within the piston chamber and divides the piston chamber into a first chamber and a second chamber, wherein the second tube member is linked to the piston assembly via a linkage member; A conductive component, which is movably disposed on the first pipe component; as well as An output component that drives the conducting component to move from a first position to a second position along a first direction; The output component drives the conducting component to move to the second position, so that the piston device connects the first chamber and the second chamber, allowing the piston device to move within the piston chamber, thereby causing the second tube component to slide axially relative to the first tube component under external force.

2. The adjustable lifting seat post mechanism for a bicycle according to claim 1, characterized in that, The output component drives the conduction component through a transmission structure; The transmission structure is configured to convert the rotational motion output by the output member into the motion of the conducting member along a first direction.

3. The adjustable lifting seat post mechanism for a bicycle according to claim 2, characterized in that, The transmission structure includes: A yaw member, configured to oscillate about a fixed axis by the output member; The output component drives the yaw component to yaw, thereby moving the conducting component from the first position to the second position along the first direction.

4. The adjustable lifting seat post mechanism for a bicycle according to claim 3, characterized in that, The drive device further includes: A swing member, fixedly connected to the output shaft of the output member, the swing member being configured to swing about a predetermined axis; and A connecting arm, one end of which is pivotally connected to the oscillating member, and the other end of which is pivotally connected to the swinging member.

5. An adjustable lifting seat post mechanism for a bicycle according to claim 3 or 4, characterized in that, The oscillating component abuts against the conductive component; During the oscillation process, the oscillating component abuts against the conducting component, causing it to move from the first position to the second position along the first direction.

6. An adjustable lifting seat post mechanism for a bicycle according to claim 3 or 4, characterized in that, The adjustable lifting seat tube mechanism also includes a base fixed to the second tube component; The oscillating member is pivotally connected to the base, the output member is fixedly connected to the base, and the linkage member is fixedly connected to the base.

7. An adjustable lifting seat post mechanism for a bicycle according to claim 2, characterized in that, The transmission structure includes: A lead screw, configured to be driven to rotate by the output member; and The lifting component is threadedly driven by the lead screw and moves from the third position to the fourth position along the first direction; When the lifting component moves from the third position to the fourth position, it will drive the linkage component to move from the first position to the second position.

8. An adjustable lifting seat post mechanism for a bicycle according to claim 7, characterized in that, The output component drives the lead screw to rotate via a gear set.

9. An adjustable lifting seat post mechanism for a bicycle according to claim 7, characterized in that, The lifting component includes: A threaded sleeve that engages with the threaded lead screw; and An anti-rotation element is configured to restrict the threaded sleeve from rotating with the lead screw.

10. An adjustable lifting seat post mechanism for a bicycle according to claim 9, characterized in that, The adjustable lifting seat tube mechanism also includes a base fixed to the second tube component; The anti-rotation element is fixed to the threaded sleeve, and the base has an anti-rotation groove that mates with the anti-rotation element; or The anti-rotation member is fixed to the base, and the threaded sleeve has an anti-rotation groove that mates with the anti-rotation member.

11. An adjustable lifting seat post mechanism for a bicycle according to claim 10, characterized in that, The lifting component also includes a pushing component, which is fixed to the threaded sleeve and abuts against the conducting component.

12. An adjustable lifting seat post mechanism for a bicycle according to claim 1 or 2, characterized in that, The adjustable lifting seat mechanism also includes an operation button for controlling the output component.

13. The adjustable lifting seat post mechanism for a bicycle according to claim 1, characterized in that, The piston assembly includes: A piston body having a connecting channel that allows the first chamber to communicate with the second chamber; A piston core, movably disposed within the piston body, has a sealed state that seals the communicating channel and an open state that opens the communicating channel; and An elastic member configured to keep the piston core in a sealed state; The conductive component cooperates with the piston core, and the linkage component is fixedly connected to the piston body.

14. A bicycle, characterized in that, Includes the adjustable lifting seat tube mechanism as described in any one of claims 1 to 13.

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