Shock-proof seat tube structure capable of adjusting preload

Abstract

The invention relates to a shock-proof seat tube structure capable of adjusting preload. The shock-proof seat tube structure comprises a seat tube, a connecting rod assembly, an adjusting assembly and a buffer piece, the connecting rod assembly is arranged at one end of the seat tube, the adjusting assembly is movably arranged in the seat tube in a penetrating mode, the adjusting assembly is provided with a pushing and abutting piece arranged on the connecting rod assembly and a pressure adjusting set connected to the pushing and abutting piece in an abutting mode, one end of the pressure adjusting set protrudes out of one end of the seat tube, and the buffering piece is arranged in the seat tube in a penetrating mode. One end of the buffer member is abutted against the pressure adjusting group of the adjusting assembly; therefore, the part, located on the outer side of the seat tube, of the pressure adjusting set can provide adjustment of preload of the buffering piece so as to bear riders with different weights correspondingly.

Description

Technical Field

[0001] This invention relates to a shock-absorbing seat post structure, and more particularly to an adjustable preload shock-absorbing seat post structure. By means of an adjustment component located between the linkage assembly and the buffer, the rider can directly change the preload of the buffer without disassembling the seat post. Background Technology

[0002] In the bicycle industry, many bicycle models have been developed to adapt to different terrains. Depending on the terrain requirements, the bicycle's frame, wheelset, and drivetrain components are all configured differently. The bicycle's seatpost is integrated with or housed within the frame, and the saddle is mounted on top of the seatpost. When the bicycle travels over uneven surfaces or gravel, the vibrations generated by driving over these obstacles are transmitted through the tires, frame, and seatpost to the handlebars and saddle. This vibration often causes discomfort for the rider. Therefore, to reduce the vibrations generated when traveling over road obstacles, some bicycles, especially mountain bikes, are equipped with shock absorbers or shock-absorbing seatposts to provide good shock absorption.

[0003] Utility model patent CN218662167U discloses a four-bar linkage seatpost for shock absorption. The linkage consists of a base, a first link, a second link, and a third link, all mounted at one end of the seatpost. A compression spring is installed within the seatpost, with its top abutting against a fixed component and its bottom fitted with a positioning element and a nut. Adjusting the tightness of the nut at the bottom of the compression spring changes its pre-compression force. However, this design requires removing the entire seatpost from the frame to adjust the nut.

[0004] Since each rider's weight is different and road conditions vary, the appropriate shock absorption coefficient will naturally change accordingly. If the seatpost needs to be pulled out every time the shock absorber spring is adjusted, it will cause a lot of inconvenience in use. Therefore, how to provide a seatpost structure that can quickly adjust the shock absorber preload is the direction the inventor has been thinking about. Summary of the Invention

[0005] In view of the fact that the existing shock-absorbing seat tubes still have many shortcomings in actual use, the inventors have improved them based on their rich professional knowledge and years of practical experience, and thus created this invention.

[0006] To achieve the above-mentioned objectives, the adjustable preload shock absorber seat tube structure of the present invention includes a seat tube; a connecting rod assembly disposed at one end of the seat tube; an adjusting assembly movably inserted into the seat tube, having a pusher disposed on the connecting rod assembly and a pressure adjusting group abutting against the pusher, one end of the pressure adjusting group protruding to the outside of one end of the seat tube; and a buffer member inserted into the seat tube, with one end of the buffer abutting against the pressure adjusting group of the adjusting assembly.

[0007] In one embodiment of the present invention, the linkage assembly has a first link, a second link and a third link, one end of the first link and the third link is disposed at one end of the seat tube, and the other end of the first link and the third link are respectively disposed at both ends of the second link.

[0008] In one embodiment of the present invention, the third link of the link assembly has a recessed portion.

[0009] In one embodiment of the invention, the linkage assembly further includes a pusher that abuts against the pressure regulating group of the adjusting assembly.

[0010] In one embodiment of the present invention, the pusher of the adjusting component is shaped like a barrel-shaped column.

[0011] In one embodiment of the invention, the adjustment assembly further includes a pressure regulating group that abuts against the other end of the buffer and is exposed to the outside at the other end of the seat tube.

[0012] In one embodiment of the present invention, the adjustment assembly further includes two caps, which are respectively disposed at both ends of the buffer member, so that the buffer member abuts against the voltage regulating group and the secondary voltage regulating group through the two caps of the adjustment assembly.

[0013] In one embodiment of the present invention, the voltage regulating assembly of the adjusting component has an upper sleeve and a lower sleeve. The upper sleeve is inserted into the lower sleeve, and a limiting groove is provided on the outer side of the lower sleeve. A limiting member is then inserted through the seat tube to the limiting groove.

[0014] In one embodiment of the present invention, one end of the upper component of the pressure regulating assembly is formed with an external thread, and the other end is formed with at least one adjustment hole, while one end of the lower component is formed with an internal thread, so that the upper component is locked onto the lower component.

[0015] In one embodiment of the present invention, the pressure regulating group of the adjusting component has multiple upper parts and a lower part. A fixing rod extends from the center of the lower part, so that the multiple upper parts fit over the lower part. A limiting groove is also provided on the outside of the lower part, and a limiting member passes through the seat tube to the limiting groove. Attached Figure Description

[0016] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 This is an overall appearance view of an embodiment of the present invention;

[0018] Figure 2 This is an exploded view of an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of an embodiment of the present invention;

[0020] Figure 4 This is a partially enlarged cross-sectional view of an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the operation of an embodiment of the present invention (I); and

[0022] Figure 6 This is a schematic diagram of the operation of an embodiment of the present invention (II).

[0023] The meanings of the reference numerals in the above figures are as follows:

[0024] 1. Seat tube;

[0025] 11. Mounting base;

[0026] 2. Linkage assembly;

[0027] 21. First link;

[0028] 22. Second link;

[0029] 23. Third link;

[0030] 231. Concave portion;

[0031] 24. Push-off items;

[0032] 3. Adjust components;

[0033] 31. Voltage regulating group;

[0034] 311. Install the kit;

[0035] 312. Sub-package;

[0036] 313. Adjustment hole;

[0037] 314. Limiting groove;

[0038] 32. Secondary voltage regulating group;

[0039] 33. Hats;

[0040] 4. Buffer components;

[0041] 5. Limiting components;

[0042] 6. Set-off screws. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. The terminology used herein is merely for describing specific embodiments and is not intended to limit the invention.

[0044] The terms “comprising,” “including,” etc., as used herein indicate the presence of the described features, steps, operations, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components. All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification and not in an idealized or overly rigid way.

[0045] In this document, unless otherwise specified, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used to indicate orientation or positional relationships based on the accompanying drawings, and are only for the convenience of describing the invention, and do not indicate or imply that the device, element, or assembly referred to must have a specific orientation, or be constructed or operated in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationships they represent may also change accordingly. Therefore, these directional terms should not be construed as limiting the invention.

[0046] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0047] Those skilled in the art will understand that the features described in the various embodiments and / or claims of the present invention can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention can be combined or combined in various ways without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

[0048] Please see Figures 1-4 The adjustable preload shock-absorbing seat post structure of the present invention mainly includes a seat post 1, a connecting rod assembly 2, an adjustment assembly 3, and a buffer 4. The seat post 1 is connected to the bicycle frame (not shown), and the end of the seat post 1 not connected to the frame has a mounting base 11 for assembling the connecting rod assembly 2.

[0049] The linkage assembly 2 has a first link 21, a second link 22, a third link 23 and a pusher 24. The pusher 24 is pivotally mounted at the middle position of the first link 21. The first link 21 serves as the front link, with one end pivotally mounted at the front end of the mounting seat 11 of the seat tube 1. The third link 23 serves as the rear link, with one end pivotally mounted at the rear end of the mounting seat 11 of the seat tube 1. The first link 21 and the third link 23 are not pivotally mounted at one end of the seat tube 1 but are pivotally mounted at both ends of the second link 22 respectively. The bicycle seat (not shown) is mounted on the second link 22 of the linkage assembly 2.

[0050] The adjustment assembly 3 has a pressure regulating group 31, a secondary pressure regulating group 32, and two caps 33. The pressure regulating group 31 has an upper sleeve 311 and a lower sleeve 312. The upper sleeve 311 is inserted into the lower sleeve 312, and the lower sleeve 312 is inserted into the seat tube 1. The upper sleeve 311 protrudes to the outside of the seat tube 1. In this embodiment, the upper sleeve 311 of the pressure regulating group 31 can be, for example, a screw. The upper sleeve 311 has an external thread and at least one adjustment hole 313. The inner side of one end of the lower sleeve 312 has an internal thread, so that the external thread of the upper sleeve 311 can engage with the lower sleeve 312. A limiting groove 314 is also provided on the outer side of the lower sleeve 312, so that a limiting member 5 passes through the seat tube 1 to the limiting groove 314.

[0051] According to an embodiment of the present invention, the top surface of the upper component 311 of the pressure regulating assembly 31 will abut against the pusher 24 of the connecting rod assembly 2. Since the pusher 24 is a barrel-shaped column with an arc-shaped part, the contact area between the pusher 24 and the upper component 311 can be reduced, so that the pusher 24 and the upper component 311 are in line contact rather than surface contact.

[0052] In this embodiment, the buffer 4 is a spring, or for example, a gas rod or a buffer rod made of elastic material. The buffer 4 is inserted into the seat tube 1, and one end of the buffer 4 abuts against the lower sleeve 312 of the pressure regulating group 31 through one of the caps 33 of the adjusting assembly 3. The other end of the buffer 4 abuts against the secondary pressure regulating group 32 of the adjusting assembly 3 through another cap 33 of the adjusting assembly 3. Thus, the buffer 4 is disposed between the pressure regulating group 31 and the secondary pressure regulating group 32 of the adjusting assembly 3. The secondary pressure regulating group 32 is disposed at the end of the seat tube 1 where the pressure regulating group 31 is not disposed, and a portion of the secondary pressure regulating group 32 is exposed to the outside of the seat tube 1.

[0053] Among them, a locking screw 6 can be provided at the position where the first link 21, the second link 22 and the third link 23 of the link assembly 2 are connected to each other, and at the position where the link assembly 2 is connected to the mounting seat 11 of the seat tube 1. Since these connection positions are often pivoted by the rider sitting on the seat, the locking screw 6 can prevent these connection positions from easily loosening.

[0054] Please refer to the following: Figure 5 and Figure 6 When the rider sits on the seat, the rider's own weight exerts downward pressure on the seat. This downward pressure is first transmitted through the seat to the linkage assembly 2. The linkage assembly 2, under this force, moves towards the third linkage 23. At this time, the pusher 24 located on the first linkage 21 pushes downward the upper and lower components 311 and 312 of the adjustment assembly 3 (e.g., ...). Figure 6 The arrow indicates that the buffer 4 is compressed to offset the vibration and achieve the effect of shock absorption. If the rider is heavy and the preload of the buffer 4 is insufficient, the buffer 4 will be over-compressed when it is static, resulting in too little remaining compression stroke of the buffer 4, which will cause discomfort when riding on uneven roads.

[0055] Please refer to the following: Figure 4 When the preload of the buffer 4 needs to be adjusted, since the upper sleeve 311 of the pressure regulating group 31 of the adjusting component 3 protrudes to the outside of the seat tube 1, and the upper sleeve 311 in this embodiment has external threads, the rider only needs to use a tool that can be inserted into the adjustment hole 313 of the upper sleeve 311, or a tool that can be fitted onto the outer surface of the upper sleeve 311, to rotate clockwise or counterclockwise. The concave portion 231 of the third link 23 of the link assembly 2 can also provide the rider with a wider working range during operation, and when the upper sleeve 311 is rotated to different angles, the tool can also be inserted into different adjustment holes 313 to facilitate the rider's rotation.

[0056] When the upper component 311 is rotated, it will screw into or out of the lower component 312 to increase or decrease the downward force, causing the lower component 312 and the upper component 311 to produce a linear displacement relative to the seat tube 1. The limiting member 5 is fixed by the seat tube 1 and passes through the elongated limiting groove 314 of the lower component 312. Thus, when the upper component 311 is rotated, the limiting member 5 is stuck in the limiting groove 314, preventing the lower component 312 from rotating, thus avoiding the lower component 312 and the upper component 311 from spinning idly. However, the lower component 312 can still move up and down according to the shape of the limiting groove 314.

[0057] If the rider rotates the upper assembly 311 of the pressure regulating assembly 31 clockwise, the upper assembly 311 applies a downward force, and the lower assembly 312, together with the upper assembly 311, moves downward relative to the seat post 1. The lower assembly 312 then applies force to the buffer 4 through the cap 33. Since the buffer 4 is fixed at one end of the auxiliary pressure regulating assembly 32, the buffer 4 is compressed to increase the preload of the buffer 4.

[0058] If the rider rotates the upper assembly 311 of the pressure regulating unit 31 counterclockwise, the upper assembly 311 will reduce the downward force, and the lower assembly 312, together with the upper assembly 311, will move upward relative to the seat tube 1. At the same time, the buffer 4 will release the compressive force to reduce the preload of the buffer 4.

[0059] According to an embodiment of the present invention, the secondary pressure regulating assembly 32 of the adjusting component 3 abuts against the buffer 4 through the cap 33. The secondary pressure regulating assembly 32 may be, for example, a screw or a fixed seat and a screw passing through the fixed seat. Part of the secondary pressure regulating assembly 32 is exposed to the outside of the seat tube 1, so that when the seat tube 1 is disassembled and replaced, the rider can rotate the secondary pressure regulating assembly 32 to change the preload of the buffer 4 by adjusting the tightness of the secondary pressure regulating assembly 32. When the secondary pressure regulating assembly 32 is tightened, the buffer 4 is pushed upward and compressed to increase the preload. Conversely, when the secondary pressure regulating assembly 32 is loosened, the buffer 4 releases the compressive force and extends to reduce the preload.

[0060] Additionally, the lower assembly 312 of the pressure regulating group 31 of the adjusting component 3 can also have a fixing rod (not shown) protruding from the center. The fixing rod can be, for example, a screw. Multiple upper assemblies 311 are then fitted onto the fixing rod of the lower assembly 312. The upper assemblies 311 can be, for example, nuts. By stacking multiple upper assemblies 311, the overall thickness of the multiple upper assemblies 311 can exceed the length of the fixing rod of the lower assembly 312. The pusher 24 of the linkage assembly 2 can then abut against the uppermost upper assembly 311. The rider can also rotate the upper assembly 311 to drive the lower assembly 312 to produce a linear displacement relative to the seat post 1, thereby achieving the effect of adjusting the preload of the buffer 4.

[0061] 1. The adjustable preload shock absorber seat post structure of the present invention has one end of the pressure adjustment group of the adjustment component protruding to the outside of the seat post. In this way, the rider can directly adjust the pressure adjustment group without disassembling the seat post to change the preload of the shock absorber, allowing the rider to adjust the preload quickly and conveniently.

[0062] 2. The adjustable preload shock-absorbing seat post structure of the present invention has a pressure adjustment group of the adjustment component abutting against the linkage assembly. When the rider sits on the seat, as the linkage assembly moves, it pushes the pressure adjustment group of the adjustment component abutting against the linkage assembly and applies force to the buffer, so that the buffer can offset and reduce vibration, providing a comfortable riding experience.

[0063] The embodiments of the present invention have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of the invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention, and all such substitutions and modifications should fall within the scope of the invention.

Claims

1. An adjustable preloaded shock absorber tube structure, characterized by The utility model relates to a seat pipe, a connecting rod assembly, an adjusting assembly, a buffer and a cap. The connecting rod assembly has a first connecting rod, a second connecting rod and a third connecting rod. The third connecting rod of the connecting rod assembly forms a concave part. The connecting rod assembly further has a pushing part abutting against the adjusting assembly. The pushing part of the adjusting assembly is in the shape of a wine barrel.

2. The adjustable preloaded shock absorber tube structure of claim 1, wherein The adjusting assembly further has a secondary adjusting assembly abutting against the other end of the buffer and exposed to the outside of the other end of the seat pipe.

3. The adjustable preloaded shock absorber tube structure of claim 2, wherein The adjusting assembly further has two caps respectively arranged at the two ends of the buffer, so that the buffer abuts against the adjusting assembly and the secondary adjusting assembly through the two caps.

4. The adjustable preloaded shock absorber tube structure of claim 1, wherein The adjusting assembly has a plurality of upper sleeves and a lower sleeve.

5. The adjustable preloaded shock absorber tube structure of claim 4, wherein The lower sleeve extends centrally to protrude a fixing rod.

6. The adjustable preloaded suspension tube structure of claim 1, wherein The plurality of upper sleeves are sleeved on the lower sleeve.

7. The adjustable preloaded suspension tube structure of claim 6, wherein The lower sleeve further has a limiting groove on the outside thereof.

8. The adjustable preloaded suspension tube structure of claim 1, wherein A limiting part is arranged in the limiting groove.

9. The adjustable preloaded suspension tube structure of claim 8, wherein, ​ 10. The adjustable preloaded suspension tube structure of claim 1, wherein ​

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