Seat post and bicycle

Abstract

This utility model discloses a seatpost and a bicycle, relating to the field of cable routing technology. The seatpost includes a tube with a strip-shaped through-hole along its extension direction for the cable to pass through. The strip-shaped through-hole extends radially through the tube. In this design, the strip-shaped through-hole allows the cable (rear brake cable and rear derailleur cable) to enter through the hollow frame and extend out of the through-hole, achieving internal cable routing. Because the length direction of the strip-shaped through-hole is consistent with the extension direction of the tube, adjusting the seatpost height does not affect the cable movement, thus ensuring internal cable routing while allowing for seatpost height adjustment. Furthermore, the strip-shaped through-hole increases the seatpost's deformation allowance, providing a certain degree of elastic cushioning and improving riding comfort. Additionally, the cable-passing seatpost serves as an anti-theft device and can be installed on different frame models, offering greater versatility.

Description

Technical Field

[0001] This utility model relates to the field of tubular wiring technology, and in particular to a seat post and a bicycle. Background Technology

[0002] With the increasing popularity of cycling and the growing demand for convenient transportation, bicycles (including folding bicycles, mountain bikes, and road bikes) are playing an increasingly important role in daily life. Bicycles are not only an environmentally friendly mode of transportation but also a tool for leisure and exercise. To meet the needs of different users, the functional and electronic components of bicycles are constantly evolving, such as braking systems and derailleur systems. The proper functioning of these components depends on the rational arrangement of cables, including the front brake cable, rear brake cable, front derailleur cable, and rear derailleur cable.

[0003] In bicycle designs, to facilitate internal routing of the rear brake and derailleur cables, some bicycles widen the frame at the junction of the seatpost and the frame, and incorporate cable channels at this widened area. While this method improves cable concealment and enhances the bicycle's overall appearance to some extent, it requires significant modifications to the frame structure, resulting in higher manufacturing costs. Utility Model Content

[0004] The main purpose of this utility model is to propose a seat post and bicycle, which aims to provide a seat post that can realize internal cable routing, has anti-theft function and strong versatility.

[0005] To achieve the above objectives, the present invention proposes a seat rod, which includes a tube body, and the tube body has a strip-shaped through hole along its extension direction for wires to pass through, and the strip-shaped through hole penetrates the tube body radially.

[0006] In one embodiment, the strip-shaped via includes a first arc segment, a straight segment, and a second arc segment arranged sequentially, wherein the cross-sectional area of ​​the first arc segment and the second arc segment gradually decreases from the end closer to the straight segment to the end farther away from the straight segment.

[0007] In one embodiment, the roughness of the inner peripheral wall of the strip-shaped through hole is less than the roughness of the outer peripheral wall of the tube body.

[0008] In one embodiment, the length of the strip-shaped through hole is the adjustable stroke of the seat rod.

[0009] In one embodiment, the seat rod includes a support slider housed within the tube, the outer peripheral wall of the support slider slidingly abutting against the inner peripheral wall of the tube; the support slider has a wire-passing hole communicating with the strip-shaped through hole, the wire-passing hole penetrating the support slider radially.

[0010] In one embodiment, the wire hole is provided along the extension direction of the support slider.

[0011] In one embodiment, the support slider has an upper end and a lower end, and the wire hole is located at the lower end.

[0012] In one embodiment, the length of the strip via is greater than the length of the wire hole.

[0013] In one embodiment, the seat post further includes a cover body, which is detachably connected to the seat post and covers the strip-shaped through hole.

[0014] This utility model also proposes a bicycle, including the seat post and frame described in any of the above embodiments, wherein the frame has a seat tube, and the tube body is movably inserted into the seat tube.

[0015] In this invention, the tube body has a strip-shaped through-hole along its extension direction. The cables (rear brake cable and rear derailleur cable) enter the strip-shaped through-hole through the hollow frame and extend out of the tube body to achieve internal cable routing. Since the length direction of the strip-shaped through-hole is consistent with the extension direction of the tube body, the height adjustment of the seatpost will not affect the movement of the cable, thus ensuring the internal cable routing function while achieving the height adjustment of the seatpost. In addition, the strip-shaped through-hole can increase the deformation margin of the seatpost, providing a certain elastic cushioning effect, which helps to improve riding comfort. Furthermore, since the tube body needs to be height adjustable, the tube body and the seatpost on the frame are connected by a quick-release mechanism. The cable passing through the strip-shaped through-hole in this solution makes the tube body difficult to remove, providing a certain anti-theft function. The seatpost proposed in this solution can be adapted to be installed on different models of frames, making it more versatile and requiring no major modifications to the frame. Its manufacturing cost is low, and it is also easy to maintain and replace. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1A structural schematic diagram of one embodiment of the seat post is provided for this utility model;

[0018] Figure 2 A schematic diagram of a supporting slider embodiment of this utility model is provided;

[0019] Figure 3 This is a schematic diagram of an embodiment of the cooperation between the seat rod and the support slider of this utility model.

[0020] Explanation of icon numbers:

[0021] 100. Seat rod; 1. Tube body; 11. Strip-shaped through hole; 111. First arc segment; 112. Straight segment; 113. Second arc segment; 2. Support slider; 21. Wire through hole;

[0022] 200. Wire.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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 scope of protection of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] This utility model proposes a seat post 100.

[0028] Please see Figure 1 In one embodiment of the present invention, the seat rod 100 includes a tube body 1, and the tube body 1 has a strip-shaped through hole 11 for the wire 200 to pass through along its extension direction. The strip-shaped through hole 11 penetrates the tube body 1 radially.

[0029] In this utility model, the tube body 1 has a strip-shaped through hole 11 along its extension direction. The wire 200 (rear brake cable and rear derailleur cable) enters the strip-shaped through hole 11 through the hollow frame of the frame and extends out of the strip-shaped through hole 11 of the tube body 1 to achieve internal wiring. Since the length direction of the strip-shaped through hole 11 is consistent with the extension direction of the tube body 1, the height adjustment of the seat post 100 will not affect the movement of the cable 200, thus ensuring the internal cable routing function of the cable 200 while realizing the height adjustment of the seat post 100. In addition, the setting of the strip-shaped through hole 11 can increase the deformation margin of the seat post 100, bringing a certain elastic cushioning effect, which helps to improve riding comfort. Furthermore, since the tube body 1 needs to be height adjustable, the tube body 1 and the seat post on the frame are connected by a quick-release connection. The cable 200 passing through the strip-shaped through hole 11 of the tube body 1 makes the tube body 1 difficult to remove, which plays a certain role in anti-theft. The seat post 100 proposed in this solution can be adapted to be installed on different models of frames, which has greater versatility and does not require major modifications to the frame. Its manufacturing cost is low, and it is also easy to maintain and replace.

[0030] Specifically, please refer to Figure 1In one embodiment, the strip-shaped via 11 includes a first arc segment 111, a straight segment 112, and a second arc segment 113 arranged sequentially. The cross-sectional area of ​​the first arc segment 111 and the second arc segment 113 gradually decreases from the end near the straight segment 112 to the end away from the straight segment 112. The smooth transition design of the first arc segment 111 and the second arc segment 113 can reduce the friction and wear of the wire 200 when entering and leaving the strip-shaped via 11, making the wire 200 pass through the strip-shaped via 11 more smoothly, reducing wear on the surface of the wire 200, thereby extending the service life of the wire 200; the transition design of the arc segment can effectively reduce the stress concentration of the wire 200 in the strip-shaped via 11, avoiding wire breakage and damage caused by stress concentration, further improving the reliability and service life of the wire 200; the straight segment The design of section 112 ensures that the cable 200 can pass through the strip-shaped through hole 11 in a straight line, avoiding bending and twisting of the cable 200 within the strip-shaped through hole 11. The guiding effect of the straight section 112 ensures the smooth routing of the cable 200, reducing resistance and friction of the cable 200 during movement. The design of the arc section and the straight section 112 also increases the elasticity and cushioning capacity of the seat post 100. When encountering bumpy roads during riding, the seat post 100 can better absorb vibrations, reducing the impact of vibrations on the rider, thereby improving riding comfort.

[0031] To reduce wear on the wire 200, in one embodiment, the roughness of the inner peripheral wall of the strip-shaped through-hole 11 is less than the roughness of the outer peripheral wall of the tube body 1. The roughness of the inner peripheral wall of the strip-shaped through-hole 11 is designed to be less than the roughness of the outer peripheral wall of the tube body 1, meaning that the inner surface of the strip-shaped through-hole 11 is smoother. The smooth surface of the inner peripheral wall of the strip-shaped through-hole 11 can significantly reduce friction and wear of the wire 200 when passing through it. When the wire 200 slides on the smooth inner surface, the friction is smaller, thereby reducing wear on the surface of the wire 200 and extending its service life. The smooth inner surface can also reduce stress concentration in the wire 200 within the strip-shaped through-hole 11, preventing breakage or damage to the wire 200 due to localized friction.

[0032] To ensure that the height adjustment of the seat post 100 does not pull on the cable 200, in one embodiment, the length of the strip-shaped through hole 11 is equal to the height adjustment stroke of the seat post 100. The length of the strip-shaped through hole 11 is designed to be equal to the height adjustment stroke of the seat post 100, meaning that the cable 200 can move freely within the strip-shaped through hole 11 throughout the entire height adjustment stroke of the seat post 100 without being pulled or obstructed. This not only protects the cable 200 but also ensures that its function is not affected. Preventing the cable 200 from being pulled during the height adjustment of the seat post 100 significantly reduces wear on the cable 200 and extends its service life. The cable 200 remains stable throughout the height adjustment of the seat post 100, preventing functional abnormalities such as brake or gear failure due to pulling. This design also makes the height adjustment of the seat post 100 smoother, ensuring that the user does not experience any obstruction or jamming when adjusting the height of the seat post 100, thus improving riding comfort and convenience.

[0033] Further, please refer to Figure 2 and Figure 3 In one embodiment, the seat rod 100 includes a support slider 2, which is housed within the tube body 1. The outer peripheral wall of the support slider 2 slidably abuts against the inner peripheral wall of the tube body 1. The support slider 2 has a wire hole 21 communicating with the strip-shaped through hole 11, and the wire hole 21 penetrates the support slider 2 radially. The support slider 2 is slidably disposed inside the tube 1. The cable 200 passes through the strip-shaped through hole 11 and the cable hole 21. The support slider 2 can move along the extension direction of the strip-shaped through hole 11 under the drive of the cable 200. The addition of the support slider 2 can enhance the structural strength of the seat post 100. When the seat post 100 is height-adjustable, especially when locking the seat post 100, the addition of the support slider 2 can prevent the seat post 100 from being unable to lock properly or from becoming loose. It can ensure that the seat post 100 is more reliable when locked and avoid riding safety hazards caused by the loose seat post 100. The cable hole 21 on the support slider 2 is connected to the strip-shaped through hole 11 to ensure that the cable 200 always passes smoothly during the height adjustment of the seat post 100 without any obstruction. The cable hole 21 can be a round hole or a strip-shaped hole. This solution does not limit this.

[0034] Please see Figure 2In one embodiment, the wire passage hole 21 is arranged along the extending direction of the support slider 2. The wire passage hole 21, arranged along the extending direction of the support slider 2, forms a strip-shaped wire passage hole 21. This strip-shaped wire passage hole 21 provides more space, allowing the wire 200 to move more smoothly during the lifting and lowering of the support rod 100, reducing friction and resistance when the wire 200 passes through. The design of the strip-shaped wire passage hole 21 can better accommodate wires 200 of different diameters. Since the length direction of the wire passage hole 21 is consistent with the extending direction of the support slider 2, wires 200 of different thicknesses can pass through smoothly, improving the versatility of the support rod 100.

[0035] In another embodiment, the support slider 2 has an upper end and a lower end, and the cable hole 21 is located at the lower end. The support slider 2 has an upper end and a lower end, and the cable hole 21 is located at the lower end of the support slider 2. The upper end is used to engage and lock the seat post 100, ensuring that the seat post 100 is more reliable when locked, and avoiding riding safety hazards caused by the seat post 100 loosening. The cable hole 21 at the lower end is designed to ensure that the cable 200 always passes smoothly during the raising and lowering of the seat post 100 without any obstruction. The upper and lower ends of the support slider 2 perform different functions, making the structure of the entire support slider 2 more stable and enhancing the overall strength of the seat post 100. The sliding contact design between the support slider 2 and the tube body 1 can reduce the shaking of the seat post 100 during use, improving riding stability and comfort.

[0036] Please see Figure 3 In one embodiment, the length of the strip-shaped through hole 11 is greater than the length of the wire through hole 21. The greater length of the strip-shaped through hole 11 provides more room for the wire 200 to move, allowing it to move more freely during the raising and lowering of the support rod 100, reducing friction and resistance during passage. This greater room for movement also reduces jamming of the wire 200 during passage, ensuring smooth movement throughout its entire stroke.

[0037] In one embodiment, the seat post 100 further includes a cover, which is detachably connected to the seat post 100 and covers the strip-shaped through hole 11. When the bicycle does not require internal cable routing, the cover can cover the strip-shaped through hole 11 to prevent external dust, moisture, etc. from entering the interior of the seat post 100, thereby protecting the internal structure of the seat post 100. The addition of the cover can increase the structural strength of the seat post 100, reduce structural weakening caused by the exposure of the strip-shaped through hole 11, and improve the overall stability and durability of the seat post 100. This allows the seat post 100 to be used with both bicycles that require internal cable routing and those that do not, improving the versatility of the seat post 100. Users can choose whether to install the cover according to their actual needs, increasing the flexibility of use. The connection between the cover and the seat post 100 is detachable, which facilitates installation and removal as needed. The detachable cover design allows for easy replacement of the cover when damaged, reducing maintenance costs.

[0038] This utility model also proposes a bicycle, which includes a frame and a seat post 100. The specific structure of the seat post 100 is as described in the above embodiments. Since this bicycle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The frame has a seat tube, and the tube body 1 is movably inserted into the seat tube.

[0039] In this utility model's technical solution, the cable 200 enters the strip-shaped through-hole 11 through the hollow frame body, extends out from the strip-shaped through-hole 11 of the tube body 1, and then extends out from the seatpost, achieving internal cable routing. For streamlined bicycles, the cable 200 extending from the seatpost can be routed through holes made in the rear upper fork or rear lower fork. For folding bicycles, the cable 200 extending from the seatpost can be routed through cable clamps installed on the rear upper fork or rear lower fork. To achieve foldability, a certain amount of cable 200 can be reserved inside or outside the hollow frame body to prevent pulling on the cable 200 during folding. This solution is not limited to any particular type of bicycle. The seatpost 100 design can adapt to different frame models without requiring significant modifications to the frame, thus improving the versatility of the seatpost 100.

[0040] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A seat post, characterized in that, The seat rod includes a tube body, and the tube body has a strip-shaped through hole along its extension direction for the wire to pass through. The strip-shaped through hole penetrates the tube body radially. The seat rod includes a support slider, which is housed within the tube. The outer peripheral wall of the support slider slides against the inner peripheral wall of the tube. The support slider has a wire-passing hole that communicates with the strip-shaped through hole and passes through the support slider radially.

2. The seat post as described in claim 1, characterized in that, The strip-shaped via includes a first arc segment, a straight segment, and a second arc segment arranged sequentially. The cross-sectional area of ​​the first arc segment and the second arc segment gradually decreases from the end closer to the straight segment to the end farther away from the straight segment.

3. The seat post as described in claim 1, characterized in that, The roughness of the inner peripheral wall of the strip-shaped through hole is less than the roughness of the outer peripheral wall of the tube body.

4. The seat post as described in claim 1, characterized in that, The length of the strip-shaped through hole is the adjustable stroke of the seat rod.

5. The seat post as described in any one of claims 1 to 4, characterized in that, The wire hole is provided along the extension direction of the support slider.

6. The seat post as described in any one of claims 1 to 4, characterized in that, The support slider has an upper end and a lower end, and the wire hole is located at the lower end.

7. The seat post as described in any one of claims 1 to 4, characterized in that, The length of the strip-shaped via is greater than the length of the wire hole.

8. The seat post as described in any one of claims 1 to 4, characterized in that, The seat post also includes a cover, which is detachably connected to the seat post and covers the strip-shaped through hole.

9. A bicycle, characterized in that, include: The seat post as described in any one of claims 1 to 8; and A frame having a seat tube, the tube body being vertically and movably inserted into the seat tube.

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