Middle tube structure with seat post clamp function inside
By designing grooves and recesses on the inner wall of the bicycle center tube and combining them with bolts and hexagonal screws, the problems of difficulty in replacing bicycle seats and rust are solved, and quick fixing and disassembly are achieved, which improves convenience and aesthetics.
Patent Information
- Application Number
- CN202421054253.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-05-15
AI Technical Summary
Existing bicycle seats are difficult to disassemble when replaced, and the joints are prone to rust, which affects convenience and practicality.
A mid-tube structure with a seatpost clamp function is designed. By opening grooves and recesses on the inner wall of the mid-tube, combined with a tie bolt and a hexagonal screw, a countersunk lock structure is formed to achieve quick fixing and removal of the saddle.
It improves the convenience and practicality of the seat cushion, reduces the difficulty of disassembly, has high clamping strength and saves costs, and improves the aesthetics of the car.
Smart Images

Figure CN223479201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bicycle parts, and in particular to a center tube structure design with an integrated seat post clamp function. Background Technology
[0002] Bicycles are typically small, two-wheeled land vehicles that are powered by pedaling. They are a green and environmentally friendly mode of transportation, suitable for commuting and getting around. Currently, most cities offer shared bicycles to facilitate travel. Bicycles are an excellent mode of transportation, powered by human pedaling, making them quite environmentally friendly, and suitable for commuting, racing, and sports. Each component of a bicycle is crucial; whether pursuing riding comfort, stability, or racing performance, the quality and structure of each component must be carefully considered. Summary of the Invention
[0003] Purpose of the Invention: The purpose of this invention is to address the shortcomings of existing technologies by providing a center tube structure with an integrated seat post clamp. Addressing the problem that existing bicycle saddle fixing methods often result in rust between the connecting pipes due to infrequent saddle replacement, increasing the difficulty of disassembly when saddle replacement is required, this invention offers a solution. This invention enables quick and easy connection and fixing of the saddle to the bicycle, improving convenience. Furthermore, it allows for rapid disassembly, replacement, and repair of the saddle, reducing disassembly difficulty and improving practicality. It not only provides high clamping strength but also saves costs.
[0004] Technical solution: The present invention discloses a center tube structure with an internal seat post clamp function, comprising a center tube, a seat cushion, a tie bolt, and a hexagonal screw. A groove is formed on the inner wall of the center tube, and a first through hole is provided on the right side of the groove. A first groove for inserting the tie bolt is provided on the left side of the groove. The tie bolt is threaded. The hexagonal screw passes through the first through hole on the right side of the groove and engages with the thread in the tie bolt to lock together, forming a countersunk lock structure.
[0005] Preferably, the groove is a 5*40mm groove.
[0006] Preferably, the first through hole has a recess at the opening on the surface of the middle tube, and the top of the hexagonal screw is embedded in the recess.
[0007] Preferably, the seat cushion is a hollow seat cushion.
[0008] Compared with the prior art, this utility model has the following advantages: it can quickly connect and fix the seat to the bicycle, improving convenience, and it can quickly disassemble, replace and repair the seat, reducing disassembly difficulty and improving practicality. It not only has high clamping strength, but also saves costs and has a beautiful shape, improving the overall aesthetics of the bicycle. Attached Figure Description
[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort, wherein:
[0010] Figure 1 This is an overall structural diagram of a central tube structure design with an internal seat rod clamp function according to this utility model;
[0011] Figure 2 This is a diagram of the middle tube structure of the present invention, which is a design for a middle tube structure with an internal seat rod clamp.
[0012] Figure 3 This is a structural diagram of a seat cushion with an internal seat post clamping device designed for a central tube structure according to this utility model.
[0013] Figure 4 This is a diagram of a bundle bolt structure for a central tube structure with an internal seat rod clamp function, according to this utility model.
[0014] Figure 5 This is a diagram of a hexagonal screw structure for a central tube structure with an integrated seat rod clamp function, according to this utility model.
[0015] In the picture: 1. Center tube; 2. Seat cushion; 13. Strap bolt; 14. Hex screw. Detailed Implementation
[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. 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.
[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0018] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0019] The technical solution of the present invention will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.
[0020] A center tube structure with an integrated seat post clamp function includes a center tube 1, a seat cushion 2, a buckle 13, and a hexagonal screw 14. A groove is formed on the inner wall of the center tube 1. A first through hole is provided on the right side of the groove in the center tube 1. A first groove is provided on the left side of the groove in the center tube 1 for inserting the buckle 13. The buckle 13 is threaded. The hexagonal screw 14 passes through the first through hole on the right side of the groove in the center tube 1 and engages with the thread in the buckle 13 to lock together, forming a countersunk lock structure.
[0021] In specific implementation, the middle tube 1 is formed by pressing two special profiles together with an interference fit. The groove is a 5*40mm groove. The first through hole has an indentation at the opening on the surface of the middle tube 1. The top of the hexagonal screw 14 is embedded in the indentation. The seat cushion 2 is a hollow seat cushion 2.
[0022] The advantage of this technical solution is that it can quickly connect and fix the seat 2 to the bicycle, which improves convenience. It also allows for quick disassembly, replacement and repair of the seat 2, reducing disassembly difficulty and improving practicality. It not only has high clamping strength, but also saves costs and has an aesthetically pleasing design, improving the overall appearance of the bicycle.
[0023] During assembly, insert the buckle 13 into the center tube 1, and the hexagonal screw 14 passes through the right side of the center tube 1 and locks onto the buckle 13 inserted into the center tube 1 to fix and tighten the seat cushion 2.
[0024] like Figure 1 As shown, the seat cushion 2 is placed inside the center tube 1. When installing, the worker first places the seat cushion 2 inside the center tube 1, then places the tie bolt 13 into the first groove on the left side of the center tube 1, and the hexagonal screw 14 passes through the right side of the center tube 1 and locks it onto the tie bolt 13 placed inside the center tube 1, thereby fixing and tightening the seat cushion 2.
[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0026] Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A tube structure with an integrated seat rod clamp function, characterized in that: The device includes a central tube, a seat cushion, a buckle, and a hexagonal screw. The inner wall of the central tube has a groove, and a first through hole is provided on the right side of the groove. A first groove for inserting the buckle is provided on the left side of the groove. The buckle has a thread. The hexagonal screw passes through the first through hole on the right side of the groove and engages with the thread in the buckle to lock together, forming a countersunk lock structure.
2. The middle tube structure with an internal seat rod clamp function according to claim 1, characterized in that: The groove is 5*40mm.
3. The middle tube structure with an internal seat rod clamp function according to claim 1, characterized in that: The first through hole has an indentation at the opening on the surface of the middle tube, and the top of the hexagonal screw is embedded in the indentation.
4. A middle tube structure with an internal seat rod clamp function according to claim 1, characterized in that: The cushion is a hollow cushion.