Quickly adjustable bicycle seat tube structure

Abstract

The application relates to the field of adjusting seat tubes, and discloses a quick-adjustable bicycle seat tube structure, which is characterized in that the technical scheme comprises a fixing sleeve and a seat tube body, a plurality of fixing grooves are formed in the fixing sleeve and are distributed along the length direction of the fixing sleeve, one end of the seat tube body is in sliding fit with the fixing sleeve and is provided with a plurality of sliding blocks, a push rod is arranged in the seat tube body and slides along the axial direction of the seat tube body, one end of the seat tube body arranged in the fixing sleeve is provided with a connecting assembly, so that when the push rod moves towards the connecting assembly, the sliding blocks are close to each other and are separated from the fixing grooves, the seat tube body and the fixing sleeve can slide relative to each other, when the push rod moves away from the connecting assembly, the sliding blocks are away from each other and are clamped with the fixing grooves to fix the seat tube body, the seat tube body can be quickly disassembled and assembled, quickly adjusted, and locked reliably, and the cost and weight increase are not obvious.

Description

Technical Field

[0001] This invention relates to the field of adjustable seatposts, and more specifically to a bicycle seatpost structure that can be quickly adjusted. Background Technology

[0002] With the development of the green economy and the sharing economy, bicycles have become a common and popular mode of transportation. The bicycle seatpost connects the saddle to the frame and primarily functions to adjust the saddle height. During use, the seatpost often needs to be adjusted for different users or usage scenarios, or it may need to be disassembled and reassembled during transportation and storage. Currently, there are two main types of bicycle seatposts on the market: standard seatposts and dropper seatposts. Both types are fixed to the frame via clamps. Some seatposts have quick-release clamping mechanisms, but there is a trade-off between secure locking and easy operation. Dropper seatposts add a movable link within the standard seatpost, improving height adjustment, but still suffer from limited adjustment range, significantly increased weight, complex adjustment mechanisms, and high cost. Furthermore, the disassembly process of the seatpost structure becomes more complicated. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a bicycle seat post structure that can be quickly adjusted to overcome the above-mentioned defects in the existing technology, and has the characteristics of quick disassembly and assembly, quick adjustment, reliable locking, and minimal increase in cost and weight.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A quick-adjustable bicycle seatpost structure, including

[0006] A fixing sleeve having a plurality of fixing grooves distributed along the length of the fixing sleeve.

[0007] The seat tube body has one end slidably engaged with the fixing sleeve and provided with a plurality of sliders. A push rod is provided inside the seat tube body and slides along the axial direction. A connecting component is provided inside the seat tube body at one end of the fixing sleeve, such that when the push rod moves toward the connecting component, the sliders move closer to each other and disengage from the fixing groove to allow relative sliding between the seat tube body and the fixing sleeve. When the push rod moves away from the connecting component, the sliders move away from each other and engage with the fixing groove to fix the seat tube body.

[0008] In this invention, preferably, the connecting assembly includes an end cap and a safety pin. One end of the safety pin is fixedly connected to the push rod. The safety pin has a first trigger portion and a plurality of second trigger portions formed thereon. The second trigger portions are formed at the end of the safety pin away from the push rod, and each of the second trigger portions corresponds to one of the sliders.

[0009] The end cap and the seat tube body are fixedly connected. The end cap has a receiving space for accommodating the slider. The slider slides with the end cap so that the slider can be exposed or built into the end cap. The slider has a first mating part and a second mating part. When the push rod slides, the first trigger part is adapted to the first mating part, and the second trigger part is adapted to the second mating part.

[0010] In this invention, preferably, there are overlapping areas among the multiple sliders, and the overlapping areas can slide relative to each other. Each overlapping area of ​​the sliders is provided with a first through hole, and each first through hole is interconnected and allows the safety pin to pass through. The first mating part is specifically a conical surface disposed at one end of the first through hole, and the first triggering part is specifically a conical guide surface. When the first triggering part abuts against the first mating part, the first triggering part pushes each slider closer to each other in sequence so that the sliders retract into the end cap.

[0011] In this invention, preferably, the second trigger part is L-shaped, and a first wedge-shaped surface is formed at the end of the second trigger part. A second wedge-shaped surface is formed on the slider. When the push rod moves away from the slider, the first wedge-shaped surface and the second wedge-shaped surface abut against each other and push the slider away from each other so that the slider is exposed outside the end cap.

[0012] In this invention, preferably, an adjustment handle is rotatably connected to the seat tube body. The adjustment handle is located on the side of the seat tube body away from the end cap. An abutment portion is formed on the adjustment handle. The abutment portion is used to abut against the end of the push rod. When the adjustment handle is rotated, the abutment portion slides relative to the push rod and pushes the push rod to slide axially.

[0013] In this invention, preferably, the push rod is provided with a reset assembly, the reset assembly including a retaining ring and a compression spring, the retaining ring being fixedly connected to the push rod, the compression spring being sleeved on the push rod, one end of the compression spring abutting against the retaining ring, and the other end of the compression spring abutting against the end cap.

[0014] In this invention, preferably, the taper of the conical guide surface is smaller than the taper of the conical surface.

[0015] In this invention, preferably, a guide member is fixedly connected to the seat tube body, the push rod is slidably connected to the guide member, and the adjusting handle is rotatably connected to the guide member.

[0016] In this invention, preferably, the fixing sleeve has a flange formed on the side near the seat tube body.

[0017] The beneficial effects of this invention are:

[0018] This invention utilizes multiple fixing grooves on a fixed sleeve to secure the push rod by engaging with the slider, ensuring reliable locking. The connecting components facilitate adjustment of the connection between the slider and the fixed sleeve, thereby enabling adjustment of the seat tube body's installation height. Furthermore, the use of safety pins to adjust the slider's sliding direction facilitates height adjustment, ensuring both connection stability and ease of height adjustment. It also allows for quick assembly and disassembly of the seat tube body and the fixed sleeve. The invention employs safety pins and sliders, with the safety pins adjusting the slider's movement and a first trigger unit driving multiple sliders. The overall structure is simple and easy to implement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the connecting component in the locked state;

[0022] Figure 4 This is a cross-sectional structural diagram of the connecting component in the unlocked state;

[0023] Figure 5 This is a schematic diagram of the connection structure of the push rod, slider, and safety pin in this invention.

[0024] Figure label:

[0025] 1. Fixing sleeve; 101. Fixing groove; 102. Flange; 2. Seat tube body; 3. Push rod; 31. Snap ring; 32. Compression spring; 4. Slider; 401. First through hole; 402. First mating part; 403. Second mating part; 404. Second through hole; 405. Second wedge surface; 5. End cap; 501. Accommodating space; 6. Safety pin; 61. First trigger part; 62. Second trigger part; 621. First wedge surface; 7. Guide; 71. Adjusting handle; 711. Abutment part. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] 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 in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please also see Figures 1 to 5 This embodiment provides a quickly adjustable bicycle seatpost structure, including a fixing sleeve 1 and a seatpost body 2. The fixing sleeve 1 has several fixing grooves 101 distributed along its length. The number of rows of fixing grooves 101 corresponds to the number of sliders 4. In this embodiment, the number of fixing grooves 101 is set to two rows, corresponding to two sliders 4 disposed within each row. A flange 102 is formed on the side of the fixing sleeve 1 near the seatpost body 2. The flange 102 serves to fix the fixing sleeve 1 to the frame, facilitating the installation of the bicycle seatpost structure designed in this application. Furthermore, the bicycle seatpost structure of this application is universal and applicable to existing bicycle frame structures. This invention, by providing multiple fixing grooves 101 on the fixing sleeve 1, utilizes the engagement between the fixing grooves 101 and the sliders 4 to secure the push rod 3, ensuring reliable locking.

[0030] Please refer to this implementation plan. Figure 1 and Figure 2A guide member 7 is fixedly connected to the seat tube body 2, and the guide member 7 is fixed at the end away from the fixed sleeve 1. An adjusting handle 71 is rotatably connected to the seat tube body 2, specifically, the adjusting handle 71 is rotatably connected to the guide member 7. The push rod 3 is slidably connected to the guide member 7. An abutment part 711 is formed on the adjusting handle 71, which is used to abut against the end of the push rod 3. When the adjusting handle 71 is rotated, the abutment part 711 slides relative to the push rod 3 and pushes the push rod 3 to slide axially.

[0031] Please refer to this implementation plan. Figures 3 to 5 One end of the seat tube body 2 is slidably engaged with the fixing sleeve 1 and is provided with several sliders 4. A push rod 3 is provided inside the seat tube body 2, and the push rod 3 slides along the axial direction of the seat tube body. A connecting component is provided inside the seat tube body 2 at one end of the fixing sleeve 1, so that when the push rod 3 moves towards the connecting component, the sliders 4 move closer to each other and disengage from the fixing groove 101, allowing the seat tube body 2 and the fixing sleeve 1 to slide relative to each other. When the push rod 3 moves away from the connecting component, the sliders 4 move away from each other and engage with the fixing groove 101 to fix the seat tube body 2. The setting of the connecting component facilitates the adjustment of the connection relationship between the sliders 4 and the fixing sleeve 1, thereby realizing the function of adjusting the installation height of the seat tube body 2. In addition, the setting of using the safety pin 6 to adjust the sliding direction of the sliders 4 makes the installation height adjustment convenient. While ensuring the stability of the connection, it is also convenient to adjust the installation height, and it can realize the quick assembly and disassembly between the seat tube body 2 and the fixing sleeve 1.

[0032] Please refer to this implementation plan. Figures 3 to 5 The connecting assembly includes an end cap 5 and a safety pin 6. One end of the safety pin 6 is fixedly connected to the push rod 3. A first trigger part 61 and several second trigger parts 62 are formed on the safety pin 6. The second trigger parts 62 are formed at the end of the safety pin 6 away from the push rod 3, and the second trigger parts 62 are correspondingly arranged with the slider 4. The end cap 5 is fixedly connected to the seat tube body 2. A receiving space 501 for accommodating the slider 4 is formed on the end cap 5. The slider 4 slides and engages with the end cap 5 so that the slider 4 can be exposed or built into the end cap 5. A first mating part 402 and a second mating part 403 are formed on the slider 4. When the push rod 3 slides, the first trigger part 61 is adapted to the first mating part 402, and the second trigger part 62 is adapted to the second mating part 403.

[0033] Please refer to this implementation plan. Figure 5Multiple sliders 4 have overlapping areas that can slide relative to each other. Each overlapping area of ​​slider 4 has a first through hole 401, which are interconnected and allow the safety pin 6 to pass through. The first mating part 402 is a conical surface located at one end of the first through hole 401, and the first trigger part 61 is a conical guide surface. When the first trigger part 61 abuts against the first mating part 402, the first trigger part 61 pushes each slider 4 closer to each other so that the slider 4 retracts into the end cap 5. The taper of the conical guide surface is smaller than the taper of the conical surface.

[0034] The second trigger part 62 is L-shaped, and a first wedge-shaped surface 621 is formed at its end. A second wedge-shaped surface 405 is formed on the slider 4. When the push rod 3 moves away from the slider 4, the first wedge-shaped surface 621 and the second wedge-shaped surface 405 abut against each other and push the slider 4 away from each other so that the slider 4 is exposed on the end cap 5. Each slider 4 is provided with a second through hole 404, and the second wedge-shaped surface 405 is formed on one side of the second through hole 404, wherein the second through hole 404 allows the second trigger part 62 to extend into.

[0035] The push rod 3 is provided with a reset assembly, which includes a retaining ring 31 and a compression spring 32. The retaining ring 31 is fixedly connected to the push rod 3, and the compression spring 32 is sleeved on the push rod 3. One end of the compression spring 32 abuts against the retaining ring 31, and the other end of the compression spring 32 abuts against the end cap 5.

[0036] Working principle:

[0037] In the locked state, push rod 3 is in the high position under the action of compression spring 32, and slider 4 is embedded in the fixing groove 101. When height adjustment is required, flip the adjustment handle 71, and the adjustment handle 71 pushes push rod 3 downward. At this time, the first trigger part 61 on safety pin 6 slides downward into the first through hole 401, and sequentially presses the first mating part 402 on each slider 4, so that each slider 4 moves towards each other. The slider 4 disengages from the fixing groove 101 and retracts into the end cap 5. At this time, the relative position between the seat tube body 2 and the fixing sleeve 1 can be adjusted as a whole, or the seat tube body 2 and the fixing sleeve 1 can be separated. After the height adjustment is completed, release the adjustment handle 71. At this time, push rod 3 will slide upward to reset under the action of compression spring 32. At this time, the second trigger part 62 slides upward simultaneously, and the first wedge surface 621 pushes the second wedge surface 405 to make each slider 4 move away from each other until the slider 4 is engaged with the fixing groove 101, and the adjustment is completed.

[0038] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A quick-adjustable bicycle seatpost structure, characterized in that: include A fixing sleeve (1) is provided with a plurality of fixing grooves (101), which are distributed along the length direction of the fixing sleeve (1). A seat tube body (2) is provided with a plurality of sliders (4) at one end of which it is slidably engaged with the fixing sleeve (1). A push rod (3) is provided inside the seat tube body (2). The push rod (3) slides along the axial direction of the seat tube body. A connecting component is provided inside the seat tube body (2) at one end of the fixing sleeve (1). When the push rod (3) moves toward the connecting component, the sliders (4) move closer to each other and disengage from the fixing groove (101) so that the seat tube body (2) and the fixing sleeve (1) can slide relative to each other. When the push rod (3) moves away from the connecting component, the sliders (4) move away from each other and engage with the fixing groove (101) to fix the seat tube body (2). The connecting assembly includes an end cap (5) and a safety pin (6). One end of the safety pin (6) is fixedly connected to the push rod (3). A first trigger part (61) and a plurality of second trigger parts (62) are formed on the safety pin (6). The second trigger parts (62) are formed at the end of the safety pin (6) away from the push rod (3), and the second trigger parts (62) are arranged in a one-to-one correspondence with the slider (4). The end cap (5) and the seat tube body (2) are fixedly connected. The end cap (5) has a receiving space (501) for accommodating the slider (4). The slider (4) slides with the end cap (5) so that the slider (4) can be exposed or built into the end cap (5). The slider (4) has a first mating part (402) and a second mating part (403). When the push rod (3) slides, the first trigger part (61) is adapted to the first mating part (402), and the second trigger part (62) is adapted to the second mating part (403). There are overlapping areas among the multiple sliders (4), and the overlapping areas can slide relative to each other. Each overlapping area of ​​the slider (4) is provided with a first through hole (401). Each first through hole (401) is interconnected and allows the safety pin (6) to pass through. The first mating part (402) is specifically a conical surface provided at one end of the first through hole (401). The first trigger part (61) is specifically a conical guide surface. When the first trigger part (61) abuts against the first mating part (402), the first trigger part (61) pushes each slider (4) closer to each other so that the slider (4) retracts into the end cap (5).

2. The quickly adjustable bicycle seatpost structure according to claim 1, characterized in that: The second trigger part (62) is L-shaped, and a first wedge surface (621) is formed at the end of the second trigger part (62). A second wedge surface (405) is formed on the slider (4). When the push rod (3) moves away from the slider (4), the first wedge surface (621) and the second wedge surface (405) abut against each other and push the slider (4) away from each other so that the slider (4) is exposed on the end cap (5).

3. The quickly adjustable bicycle seatpost structure according to claim 1, characterized in that: An adjustment handle (71) is rotatably connected to the seat tube body (2). The adjustment handle (71) is located on the side of the seat tube body (2) away from the end cap (5). An abutment (711) is formed on the adjustment handle (71). The abutment is used to abut against the end of the push rod (3). When the adjustment handle (71) is rotated, the abutment (711) slides relative to the push rod (3) and pushes the push rod (3) to slide axially.

4. The quickly adjustable bicycle seatpost structure according to claim 1, characterized in that: The push rod (3) is provided with a reset assembly, which includes a retaining ring (31) and a compression spring (32). The retaining ring (31) is fixedly connected to the push rod (3), and the compression spring (32) is sleeved on the push rod (3). One end of the compression spring (32) abuts against the retaining ring (31), and the other end of the compression spring (32) abuts against the end cap (5).

5. The quickly adjustable bicycle seatpost structure according to claim 1, characterized in that: The taper of the conical guide surface is smaller than the taper of the conical surface.

6. The quickly adjustable bicycle seatpost structure according to claim 3, characterized in that: A guide (7) is fixedly connected to the seat tube body (2), the push rod (3) is slidably connected to the guide (7), and the adjusting handle (71) is rotatably connected to the guide (7).

7. The quickly adjustable bicycle seatpost structure according to claim 1, characterized in that: The fixing sleeve (1) has a flange (102) formed on the side near the seat tube body (2).

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