Integrated frame seat tube structure
By designing an integrated frame seatpost structure, and utilizing a combination of seatpost posts, positioning plates, and screws, the problem of rapid assembly after separate production was solved, enabling rapid assembly and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN SHENGQIZHE CARBON FIBER PROD CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, the integrated frame seatpost cannot be quickly assembled after being produced in parts, resulting in low production efficiency.
An integrated frame seatpost structure was designed, including components such as a downtube, seatpost, positioning plate, screw, and connector. The seatpost slides into the downtube, and quick assembly is achieved through the cooperation of the positioning plate and screw. The connector is detachable for easy assembly.
It enables rapid assembly of the lower tube and seat tube column after separate production, improving production efficiency and ease of assembly.
Smart Images

Figure CN224589305U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bicycle seatpost, specifically relating to an integrated bicycle seatpost structure. Background Technology
[0002] The production of a one-piece frame seatpost structure involves placing the raw material into a blow molding mold and then blow molding the one-piece frame seatpost. Since the seatpost structure is blow molded as a single piece, it is impossible to produce the downtube and seatpost separately. How to quickly assemble the downtube and seatpost after they have been produced separately has become a technical problem that urgently needs to be solved.
[0003] This invention attempts to mitigate or at least alleviate such problems or defects by providing new or otherwise improved frame seatposts. Utility Model Content
[0004] In view of one or more of the above-mentioned defects or improvement needs of the existing technology, this utility model provides an integrated frame seatpost structure, which has the advantage of being able to be quickly assembled from the downtube and seatpost after separate production.
[0005] To achieve the above objectives, this utility model provides an integrated frame seatpost structure, which includes a downtube with a triangular groove inside. A lower fork support and an upper fork support are integrally formed at the bottom of the downtube, and a through hole is opened at one end of the downtube.
[0006] A seat tube column is slidably arranged in the through hole, and a pad is detachably arranged at the bottom of the seat tube column.
[0007] A positioning plate is provided with a lug detachably mounted along its side, and the lug is able to contact the side end of the lower tube.
[0008] A screw, rotatably disposed within the positioning plate, and capable of passing sequentially through the lower tube and the pad; and
[0009] A connector, which is detachably installed at the tail end of the lower tube.
[0010] As a further improvement of this utility model, an upper tube is detachably installed at the top of the lower tube, and the diameter of the upper tube is compatible with the diameter of the lower tube.
[0011] As a further improvement of this utility model, an embedding surface is provided at the bottom end of the lower tube, and a connecting hole is provided at the bottom end of the lower tube, and the connecting hole can pass through the embedding surface.
[0012] As a further improvement of this utility model, a first abutment pad can be detachably installed at the bottom of the lower fork support, and the diameter of the first abutment pad is adapted to the diameter of the lower fork support.
[0013] As a further improvement of this utility model, a second abutment pad can be detachably installed at the bottom of the upper fork support, and the diameter of the second abutment pad is adapted to the diameter of the upper fork support.
[0014] As a further improvement of this utility model, the upper fork bottom support also has a hollow groove, and the diameter of the hollow groove is adapted to the diameter of the upper fork bottom support.
[0015] As a further improvement of this utility model, the connector includes
[0016] A sleeve is slidably installed inside the lower tube. A limiting ring 1 is detachably installed at one end of the sleeve and can contact the one end of the sleeve. A limiting ring 2 is detachably installed at the other end of the sleeve and can contact the other end of the sleeve.
[0017] The clamping tube is rotatably mounted on the inner circumferential surface of the sleeve, and has multiple sets of clamping strips inside.
[0018] As a further improvement of this utility model, a rubber sleeve is also fitted on the outer circumference of the sleeve, and the diameter of the rubber sleeve is adapted to the diameter of the sleeve.
[0019] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:
[0020] The integrated seatpost structure of this utility model involves inserting the seatpost into the downtube via a series of seatposts, ensuring that the bottom of the pad is in contact with the inner wall of the downtube. A positioning plate is then attached to the outer bottom wall of the downtube, and the ear plate is placed against the side end of the downtube. Finally, a screw is passed through the downtube and the pad in sequence to complete the positioning of the seatpost within the downtube. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the integrated frame seatpost structure of this utility model;
[0022] Figure 2 This is a structural schematic diagram of the integrated frame seatpost structure of this utility model from another angle;
[0023] Figure 3 This is a schematic diagram of the structure of the lower tube and the connector of this utility model when they are separated.
[0024] Figure 4 This utility model Figure 1 Enlarged view of point A;
[0025] Figure 5 This is a schematic diagram of the overall structure of the seat tube column of this utility model;
[0026] Figure 6 This is a schematic diagram of the overall structure of the connector of this utility model.
[0027] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. lower tube; 11. upper tube; 12. triangular groove; 13. lower fork bottom support; 14. upper fork bottom support; 15. embedded surface; 16. connecting hole; 2. seat tube post; 21. pad plate; 22. positioning plate; 23. ear plate; 24. screw; 3. connector; 31. sleeve; 32. limiting ring one; 33. limiting ring two; 34. clamping tube. Detailed Implementation
[0028] 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.
[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.
[0030] 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.
[0031] In the embodiments, by Figures 1-6 Presented is an integrated frame seatpost structure, wherein, Figure 1 This is a schematic diagram of the overall structure of the integrated frame seatpost structure of this utility model; Figure 2 This is a structural schematic diagram of the integrated frame seatpost structure of this utility model from another angle; Figure 3 This is a schematic diagram of the structure of the lower tube and the connector of this utility model when they are separated. Figure 4 This utility model Figure 1 Enlarged view of point A; Figure 5This is a schematic diagram of the overall structure of the seat tube column of this utility model; Figure 6 This is a schematic diagram of the overall structure of the connector of this utility model. It includes a lower tube 1 with a triangular groove 12 inside. A lower fork bottom support 13 and an upper fork bottom support 14 are integrally formed at the bottom of the lower tube 1. A through hole is opened at one end of the lower tube 1. A seat tube post 2 is slidably arranged in the through hole. A pad 21 is detachably arranged at the bottom of the seat tube post 2. A positioning plate 22 has an ear plate 23 detachably installed along its side, and the ear plate 23 can contact the side end of the lower tube 1. A screw 24 is rotatably arranged in the positioning plate 22, and the screw 24 can pass through the lower tube 1 and the pad 21 in sequence. And a connector 3 is detachably installed at the tail end of the lower tube 1.
[0032] The overall concept of this utility model is as follows: the seat post 2 is inserted into the lower tube 1 through the arrangement of the seat post 2, and the bottom of the pad 21 is in contact with the inner wall of the lower tube 1. The positioning plate 22 is clamped on the outer bottom wall of the lower tube 1, and the ear plate 23 is in contact with the side end of the lower tube 1. The screw 24 is passed through the lower tube 1 and the pad 21 in sequence to complete the positioning operation of the seat post 2 in the lower tube 1.
[0033] In some embodiments, more specifically, an upper tube 11 is detachably installed at the top of the lower tube 1, and the diameter of the upper tube 11 is adapted to the diameter of the lower tube 1.
[0034] In some embodiments, in order to facilitate quick connection between the lower tube 1 and other connecting components, an embedding surface 15 is provided at the bottom end of the lower tube 1, and a connecting hole 16 is provided at the bottom end of the lower tube 1, and the connecting hole 16 can pass through the embedding surface 15.
[0035] In some embodiments, more specifically, in order to enhance the stability of the connection between the lower fork support 13 and the surface to be installed, a first abutment pad is detachably installed at the bottom of the lower fork support 13, and the diameter of the first abutment pad is adapted to the diameter of the lower fork support 13.
[0036] In some embodiments, more specifically, in order to enhance the stability of the connection between the upper fork base support 14 and the surface to be installed, a second abutment pad is detachably installed at the bottom of the upper fork base support 14, and the diameter of the second abutment pad is adapted to the diameter of the upper fork base support 14.
[0037] In some embodiments, in order to reduce the weight of the upper fork bottom support 14 during use, a hollow groove is provided inside the upper fork bottom support 14, and the diameter of the hollow groove is adapted to the diameter of the upper fork bottom support 14.
[0038] Next, a more specific structure and construction of the connector 3 will be given for further explanation. The connector 3 includes a sleeve 31, which is slidably arranged inside the lower tube 1. A limiting ring 32 is detachably installed at one end of the sleeve 31 and can contact the one end of the sleeve 31. A limiting ring 33 is detachably installed at the other end of the sleeve 31 and can contact the other end of the sleeve 31. A clamping tube 34 is rotatably installed on the inner circumferential surface of the sleeve 31 and has multiple sets of clamping strips inside the clamping tube 34.
[0039] Next, the overall working principle and effect of connector 3 will be further explained. The sleeve 31 is inserted into the lower tube 1. The first limiting ring 32 is brought into contact with one end of the sleeve 31, and the second limiting ring 33 is brought into contact with the other end of the sleeve 31. The slot in the outer tube to be installed is passed through the locking strip in the locking tube 34, and the slot in the outer tube to be installed is passed through the locking tube 34. It should also be noted that the locking tube 34 can quickly connect to the outside and quickly disassemble and assemble the outer tube to be installed.
[0040] In some embodiments, more specifically, in order to further increase the friction between the sleeve 31 and the lower tube 1, a rubber sleeve is also fitted on the outer circumferential surface of the sleeve 31, and the diameter of the rubber sleeve is adapted to the diameter of the sleeve 31.
[0041] In summary, by inserting the seat post 2 into the lower tube 1, and ensuring that the bottom of the pad 21 is in contact with the inner wall of the lower tube 1, by clamping the positioning plate 22 onto the outer bottom wall of the lower tube 1, and by having the ear plate 23 abut against the side end of the lower tube 1, and by passing the screw 24 through the lower tube 1 and the pad 21 in sequence, the positioning operation of the seat post 2 in the lower tube 1 is completed.
[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An integrated frame seat tube structure, characterized by comprising: It includes The lower tube (1) has a triangular groove (12) inside. A lower fork bottom support (13) and an upper fork bottom support (14) are integrally formed at the bottom of the lower tube (1). A through hole is opened at one end of the lower tube (1). A seat post (2) is slidably arranged in the through hole, and a pad (21) is detachably arranged at the bottom of the seat post (2). The positioning plate (22) has an ear plate (23) detachably mounted along its side, and the ear plate (23) can contact the side end of the lower tube (1); A screw (24) is rotatably disposed within the positioning plate (22), and the screw (24) can pass sequentially through the lower tube (1) and the pad (21); and The connector (3) is detachably installed at the tail end of the lower tube (1).
2. The unit frame seat tube structure according to claim 1, characterized by An upper tube (11) is detachably installed at the top of the lower tube (1), and the diameter of the upper tube (11) is compatible with the diameter of the lower tube (1).
3. The unit frame seat tube structure according to claim 2, characterized by An embedded surface (15) is also provided at the bottom end of the lower tube (1), and a connecting hole (16) is also provided at the bottom end of the lower tube (1), and the connecting hole (16) can pass through the embedded surface (15).
4. The unit frame seat tube structure according to claim 3, characterized by A first abutment pad is detachably installed at the bottom of the lower fork support (13), and the diameter of the first abutment pad is compatible with the diameter of the lower fork support (13).
5. The unitized frame seat tube structure of claim 4, wherein A second abutment pad can be detachably installed at the bottom of the upper fork bottom support (14), and the diameter of the second abutment pad is compatible with the diameter of the upper fork bottom support (14).
6. The unitized frame seat tube structure of claim 1, wherein The upper fork bottom support (14) also has a hollow groove, and the diameter of the hollow groove is compatible with the diameter of the upper fork bottom support (14).
7. The unitized frame seat tube structure of claim 6, wherein The connector (3) includes A sleeve (31) is slidably arranged inside the lower tube (1). A limiting ring (32) is detachably installed at one end of the sleeve (31) and the limiting ring (32) can contact the other end of the sleeve (31). A limiting ring (33) is detachably installed at the other end of the sleeve (31) and the limiting ring (33) can contact the other end of the sleeve (31). The clamp tube (34) is rotatably mounted on the inner circumferential surface of the sleeve (31), and has multiple sets of clamping strips inside the clamp tube (34).
8. The unitized frame seat tube structure of claim 7, wherein A rubber sleeve is also fitted on the outer circumference of the sleeve (31), and the diameter of the rubber sleeve is compatible with the diameter of the sleeve (31).