Integrated seat tube of bicycle

Abstract

The utility model discloses an integrated seat tube of a bicycle, and particularly relates to the integrated seat tube of the bicycle. Comprising a vertical pipe body and a horizontal mounting part, the vertical pipe body and the horizontal mounting part are integrally formed by seamless metal pipe fittings, the horizontal mounting part is of a continuous arc-shaped structure, and a plurality of through holes are formed in the horizontal mounting part and used for reducing weight and assembling and fixing. According to the integrated seat tube, more compact design is achieved through extrusion forming, unnecessary parts and joints are reduced, the overall structure is more concise and smoother, the defects that the strength and rigidity of a seat tube structure connected through welding or screws are not enough are overcome, various stresses in the riding process can be better borne, and the cost is reduced by reducing the unnecessary parts. The seat tube can be mounted and adjusted simply, conveniently and quickly only through simple quick disassembly or fixation, more stable support can be provided during riding, shaking of the seat tube is reduced, and riding comfort and controllability are improved.

Description

Technical Field

[0001] The utility model relates to the field of bicycles, in particular to an integrated bicycle seat tube. Background Art

[0002] As bicycles become increasingly popular as a green and environmentally friendly means of transportation, users are increasingly demanding performance, safety, and comfort. Conventional bicycle metal seatposts typically consist of a vertical tube and a horizontal mounting portion, which are welded together. Because these seatposts are welded, the welds are susceptible to desoldering or breaking during riding, posing a safety hazard. These seatposts are molded from solid bars or profiles, with a solid horizontal mounting portion, which increases the weight of the bicycle, results in low product precision, and difficulty controlling length, leading to material waste. Summary of the Invention

[0003] The present utility model aims to provide an integrated bicycle seat tube, which addresses the problem that conventional metal bicycle seat tubes generally consist of a vertical tube body and a horizontal mounting portion, which are welded together. Such welded seat tubes are susceptible to desoldering or breaking during riding, posing a safety hazard. Furthermore, seat tubes molded from solid bars or profiles with a solid horizontal mounting portion tend to increase the weight of the bicycle, resulting in low product precision, difficulty in controlling length, and material waste.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] Provided is an integrated bicycle seat tube, comprising a vertical tube body and a horizontal mounting portion, wherein the vertical tube body and the horizontal mounting portion are integrally formed from seamless metal pipes, the horizontal mounting portion is a continuous arc-shaped structure, and a plurality of through holes are provided on the horizontal mounting portion for reducing weight and assembling and fixing.

[0006] As a preferred solution for an integrated bicycle seat tube, the vertical tube body has a teardrop-shaped opening to reduce weight and increase the strength of the stress concentration point.

[0007] As a preferred solution for an integrated bicycle seat tube, the horizontal mounting portion is used in conjunction with the plurality of through holes to adjust the front and rear inclination angles of the seat, thereby improving riding comfort and efficiency.

[0008] Beneficial effects of the utility model:

[0009] The one-piece seat tube is extruded to achieve a more compact design, reducing unnecessary parts and seams, making the overall structure simpler and smoother, avoiding the weaknesses of insufficient structural strength and rigidity of welded or screwed seat tubes, and can better withstand various stresses during riding.

[0010] Since there are no moving parts, the installation and adjustment of the seat tube can be simple and quick through simple quick release or fixing. It can provide more stable support during riding, reduce the shaking of the seat tube, and improve riding comfort and control.

[0011] The one-piece seat tube extrusion process results in minimal material waste and precise dimensional control, improving surface quality and reducing secondary processing. It's suitable for mass production, reducing production costs while also improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0013] Figure 1 It is a three-dimensional schematic diagram of an integrated bicycle seat tube according to an embodiment of the present invention.

[0014] Figure 2 It is a schematic cross-sectional view of an integrated bicycle seat tube according to an embodiment of the present invention.

[0015] Figure 3 This is another perspective schematic diagram of the integrated bicycle seat tube according to one embodiment of the present invention.

[0016] In the picture:

[0017] 1. Vertical tube body; 2. Horizontal mounting part. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0019] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0020] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] In the description of this utility model, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0022] like Figure 1-3As shown, the utility model provides a technical solution: a one-piece seat tube for a bicycle, comprising a vertical tube body 1 and a horizontal mounting portion 2 integrally extruded from seamless metal pipe fittings, the tube wall thickness of the vertical tube body 1 being uniform, and the cross section of the vertical tube body 1 being in the shape of a teardrop, the tube width on the right side of the vertical tube body 1 being greater than the tube width on the left side of the vertical tube body 1, and the tube curvature on the right side of the vertical tube body 1 being larger, the horizontal mounting portion 2 being in a continuous arc-shaped structure, the top of the horizontal mounting portion 2 being in the form of an inclined surface horizontally inclined to the lower right, the seat being mounted by the inclined surface horizontally inclined to the lower right at the top of the horizontal mounting portion 2 and the front and rear inclination angle of the seat being adjusted, thereby improving an inappropriate riding posture. , reducing the pressure on the hips and waist caused by long-term riding and improving riding efficiency, a semicircular opening groove is opened through the horizontal mounting part 2 in the middle of the upper front part of the horizontal mounting part 2, and the semicircular opening groove is used to reduce the overall weight of the horizontal mounting part 2 and facilitate the installation of the seat on the horizontal mounting part 2. A through hole 1 is opened through the horizontal mounting part 2 on the rear side of the top of the horizontal mounting part 2, so that the seat can be quickly installed into the horizontal mounting part 2, and the through hole 1 is horizontally inclined to the lower left, and the bottom opening of the through hole 1 is located on the left side of the top of the vertical tube body 1, and a through hole 2 is opened on the right side of the semicircular opening groove on the front side of the horizontal mounting part 2, which penetrates the horizontal mounting part 2. The through hole 2 is located at the horizontal mounting part 2. A through hole 1 on the rear side of the top of the mounting part 2 passes through the through hole 1, which is used to match the required parts to lock and fix the seat inserted in the through hole 1 and adjust the height of the seat inserted in the through hole 1. A through hole 3 is provided on the middle of the top front side of the horizontal mounting part 2 to match the required parts to adjust the inclination of the seat according to personal preference. The required parts are matched with through holes 2 and 3 to adjust the up and down inclination of the seat inserted in the through hole 1 according to personal preference, so as to achieve the best riding posture and reduce the pressure on the buttocks and waist caused by long-term riding. The vertical tube 1 has a larger right side and a smaller left side structure, which saves production materials while also allowing the vertical tube 1 to have a larger arc on the right side. The tube with a larger curvature is used to withstand the force caused by the change of the stress point due to the seat installed on the inclined surface at the top of the horizontal mounting part 2, so as to avoid the vertical tube 1 bending or even breaking due to insufficient strength due to insufficient stress area, which affects the riding experience. The weight is transferred to the horizontal mounting part 2 through the seat and then to the vertical tube 1. The arc design of the horizontal mounting part 2 disperses these forces, reduces the stress concentration at a single contact point, and enhances the stability and durability of the connection between the seat tube and the frame. The larger arc tube on the right side of the vertical tube 1 further improves the tube strength to support the pressure from the seat, thereby improving the overall rigidity of the integrated seat tube and preventing the seat tube from breaking easily during riding.

[0023] Working principle: During the production process, the profile with positioning holes on the side is preheated to the specified temperature to ensure that the material is softened enough for molding, prevent cracks from occurring during processing, and not melt. The preheated profile is quickly placed in the mold. The preheated profile is filled into the mold cavity under the action of the extrusion equipment pressure to form the required one-piece structure. After molding is completed, the molded part is allowed to cool naturally in the mold or use water cooling, air cooling and other rapid cooling methods to enhance its strength and fix its shape. After cooling, the mold is opened and the one-piece molded seat tube is taken out, and then the surface quality is inspected to check for cracks, burrs or other defects, such as If there are cracks, burrs or other defects, they will be ground, polished or preheated before secondary extrusion molding to improve the appearance quality and performance of the finished product. Extrusion molding can achieve a more compact design, reduce unnecessary parts and seams, make the overall structure simpler and smoother, avoid the weaknesses of insufficient structural strength and rigidity of the seat tube connected by welding or screws, and better withstand various stresses during riding. By reducing unnecessary parts, the installation and adjustment of the seat tube becomes simple and quick through simple quick release or fixing, which can provide more stable support during riding, reduce the shaking of the seat tube, and improve riding comfort and control.

[0024] It should be noted that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that various modifications, equivalent substitutions, and variations may be made to the present invention. However, as long as these modifications do not depart from the spirit of the present invention, they are within the scope of protection of the present invention. Furthermore, certain terms used in the specification and claims of this application are not intended to be limiting but are provided for ease of description only.

Claims

1. A bicycle integrated seat tube, characterized in that: The utility model comprises a vertical tube body (1) and a horizontal mounting portion (2), wherein the vertical tube body (1) and the horizontal mounting portion (2) are integrally formed from a seamless metal pipe, the horizontal mounting portion (2) is in a continuous arc-shaped structure, and a plurality of through holes are provided on the horizontal mounting portion (2) for reducing weight and assembling and fixing.

2. The integrated bicycle seat tube according to claim 1, wherein: The vertical tube body (1) has a drop-shaped orifice to reduce weight and increase the strength of the stress concentration point.

3. The integrated bicycle seat tube according to claim 1, wherein: The horizontal mounting portion (2) is used in conjunction with the plurality of through holes to adjust the front and rear tilt angles of the seat, thereby improving riding comfort and efficiency.

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