Lightweight road vehicle frame

Abstract

The utility model discloses a lightweight road vehicle frame. The lightweight road vehicle frame comprises a connecting piece, a lower pipe is installed on the connecting piece, a head pipe is installed on the lower pipe, an upper pipe is installed on the head pipe, a seat pipe is installed on the upper pipe, the seat pipe is installed on the connecting piece, and one ends of two rear upper forks are installed on the upper pipe. According to the utility model, the flat and thin design is adopted for the upper tube to reduce the total weight of materials, and the closed structure is designed behind the frame, so that the weight of the material lamination at the junction of the upper tube and the seat tube can be reduced, the outline of the whole vehicle is more concise and attractive, and the rear fork is extended to be connected with the seat tube and the upper tube, so that the whole vehicle is more attractive. According to the seat tube closing device, the problems caused by the fact that a rear upper fork cantilever is too long can be reduced, the riding comfort and the strength and rigidity of a whole vehicle can be effectively improved, the seat tube column is fixed through the two-piece type metal piece, an existing seat tube closing device can be replaced, and the seat tube closing device is simple in structure, easier to assemble and smaller in assembly space.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a lightweight road bike frame. Background Art

[0002] The road bike frame is the skeleton part of a road bicycle and is the most basic component of the whole bicycle. Its material, type and structure directly affect the performance and riding experience of the bicycle.

[0003] In the prior art, generally, at the intersection of the top tube and the seat tube, the shape needs to be filled with carbon fiber material + PU and other materials with sufficient thickness to ensure enough space for placing the seat tube clamp. Therefore, the shape at this position makes the shape of the seat tube of the frame look extremely bulky, and it will also increase the material weight of the whole vehicle. Moreover, due to the excessive length of the rear upper fork cantilever, if the product structure is too rigid, when the rider rides in an uneven environment, the shock absorption effect of the frame will become worse, making the riding lose comfort. If the product structure rigidity is too low, the frame is prone to breakage and accidents are likely to occur. Therefore, a lightweight road bike frame is needed to meet people's needs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lightweight road bike frame to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A lightweight road bike frame, including a connecting piece; a down tube is installed on the connecting piece, a head tube is installed on the down tube, a top tube is installed on the head tube, a seat tube is installed on the top tube, the seat tube is installed on the connecting piece, one ends of two rear upper forks are installed on the top tube, the other ends of the two rear upper forks are both installed with rear lower forks, and the two rear lower forks are both installed on the connecting piece. A seat tube column is slidably installed on the inner wall of the seat tube, and a clamping structure is installed in the seat tube column.

[0006] Preferably, the clamping structure includes an installation groove, the installation groove is opened on the inner wall of the seat tube, a first metal sheet and a second metal sheet are movably installed in the installation groove, a rubber pad is installed on one side of the second metal sheet, and the rubber pad is in contact with the outer surface of the seat tube column. Two installation holes are opened on the seat tube, two adjusting screws are movably installed in the two installation holes respectively. Two adjusting screw holes are opened on the first metal sheet, and the two adjusting screws are respectively threadedly installed in the two adjusting screw holes. Two extrusion grooves are opened on the second metal sheet, and one ends of the two adjusting screws are respectively located in the two extrusion grooves.

[0007] Preferably, a convex block is installed on one side of the second metal sheet, and a groove is opened on the inner wall of the first metal sheet, and the convex block is slidably installed in the groove.

[0008] Preferably, a positioning hole is formed in the first metal sheet, an installation screw is movably installed in the positioning hole, a screw hole is formed in the inner wall of the second metal sheet, and the installation screw is threadedly installed in the screw hole.

[0009] Preferably, the lower tube, the head tube, the upper tube and the seat tube form a triangular structure, and the upper tube, the rear upper fork, the rear lower fork and the connecting piece form a triangular structure.

[0010] Preferably, a connecting tube is installed on the rear upper fork, and the connecting tube is installed on one side of the seat tube.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] (1) In the present utility model, the upper tube adopts a flat and thin design to reduce the overall weight of the material used. And by designing the clamping structure at the rear of the frame, the weight of the material stack at the intersection of the upper tube and the seat tube can be reduced, making the overall contour of the vehicle more concise and beautiful.

[0013] (2) By extending the connection between the rear upper fork and the seat tube and the upper tube, the problems caused by the too long cantilever of the rear upper fork can be reduced, and the riding comfort, strength and rigidity of the whole vehicle can be effectively improved.

[0014] (3) By setting two-piece metal sheets to fix the seat tube column, the existing seat tube clamp can be replaced. And this seat tube clamping device has a simple structure, is easier to assemble, and has a smaller assembly space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of a lightweight road bike frame proposed by the present utility model;

[0016] Figure 2 is a schematic partial structure diagram of a lightweight road bike frame proposed by the present utility model;

[0017] Figure 3 is a schematic seat tube structure diagram of a lightweight road bike frame proposed by the present utility model;

[0018] Figure 4 is a schematic installation groove structure diagram of a lightweight road bike frame proposed by the present utility model;

[0019] Figure 5 is a schematic metal sheet structure diagram of a lightweight road bike frame proposed by the present utility model;

[0020] Figure 6 is an exploded structure diagram of the first metal sheet and the second metal sheet of a lightweight road bike frame proposed by the present utility model;

[0021] Figure 7Schematic explosion side view structure of metal sheet 1 and metal sheet 2 of a lightweight road bike frame proposed by the present utility model.

[0022] In the figure: 100, connecting piece; 200, down tube; 201, head tube; 202, upper tube; 203, seat tube; 204, rear upper fork; 205, rear lower fork; 206, seat tube column; 207, connecting tube; 300, installation groove; 301, metal sheet 1; 302, metal sheet 2; 303, installation hole; 304, adjusting screw; 305, adjusting screw hole; 306, extrusion groove; 307, convex block; 308, groove; 309, positioning hole; 310, installation screw; 311, screw hole. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-7 , the present utility model provides a technical solution: a lightweight road bike frame, including a connecting piece 100; a down tube 200 is installed on the connecting piece 100, a head tube 201 is installed on the down tube 200, an upper tube 202 is installed on the head tube 201, a seat tube 203 is installed on the upper tube 202, the seat tube 203 is installed on the connecting piece 100, one end of two rear upper forks 204 is installed on the upper tube 202, the other ends of the two rear upper forks 204 are both installed with rear lower forks 205, the two rear lower forks 205 are both installed on the connecting piece 100, a seat tube column 206 is slidably installed in the inner wall of the seat tube 203, a closing structure is installed in the seat tube column 206. By making the upper tube 202 into a flat and thin design, the overall weight of the material used can be reduced, making the frame more lightweight. By extending the rear upper fork 204 to be connected to the upper tube 202 and using a connecting tube 207 to connect the rear upper fork 204 and the seat tube 203, the problem of the rear upper fork 204 having too long a cantilever is reduced, improving the riding comfort and the strength and rigidity of the whole vehicle. By designing the closing device at the rear of the frame, the weight of the material lamination at the intersection of the upper tube 202 and the seat tube 203 can be reduced.

[0025] Further, the closing structure includes an installation groove 300 which is opened on the inner wall of the seat tube 203. A first metal sheet 301 and a second metal sheet 302 are movably installed in the installation groove 300. A rubber pad is installed on one side of the second metal sheet 302, and the rubber pad is in contact with the outer surface of the seat tube column 206. Two installation holes 303 are opened on the seat tube 203. Two adjusting screws 304 are movably installed in the two installation holes 303 respectively. Two adjusting screw holes 305 are opened on the first metal sheet 301, and the two adjusting screws 304 are respectively threadedly installed in the two adjusting screw holes 305. Two extrusion grooves 306 are opened on the second metal sheet 302, and one ends of the two adjusting screws 304 are respectively located in the two extrusion grooves 306. First, connect the first metal sheet 301 and the second metal sheet 302 with installation screws 310. Pass the installation screws 310 through the positioning holes 309 and screw them into the screw holes 311. During this process, the convex blocks 307 on the second metal sheet 302 can slide into the grooves 308. The installation distance between the first metal sheet 301 and the second metal sheet 302 can be adjusted by rotating the installation screws 310. Then, place the adjusted first metal sheet 301 and second metal sheet 302 into the installation groove 300 and align the adjusting screw holes 305 with the installation holes 303. Then insert the seat tube column 206 into the seat tube 203. Pass the adjusting screws 304 through the installation holes 303 and screw them into the adjusting screw holes 305. Finally, the adjusting screws 304 can be made to abut in the extrusion grooves 306. At the same time, the second metal sheet 302 is pressed by the adjusting screws 304 and pressed tightly against the surface of the seat tube column 206 to limit the position of the seat tube column 206.

[0026] Further, a convex block 307 is installed on one side of the second metal sheet 302, and a groove 308 is opened on the inner wall of the first metal sheet 301. The convex block 307 is slidably installed in the groove 308. The convex block 307 on the second metal sheet 302 can slide into the groove 308 to prevent the positions of the first metal sheet 301 and the second metal sheet 302 from shifting.

[0027] Further, a positioning hole 309 is opened on the first metal sheet 301. An installation screw 310 is movably installed in the positioning hole 309. A screw hole 311 is opened on the inner wall of the second metal sheet 302. The installation screw 310 is threadedly installed in the screw hole 311. Passing the installation screw 310 through the positioning hole 309 and screwing it into the screw hole 311 can fix the first metal sheet 301 and the second metal sheet 302 or adjust the distance between the two.

[0028] Further, the lower tube 200, the head tube 201, the upper tube 202 and the seat tube 203 form a triangular structure, and the upper tube 202, the rear upper fork 204, the rear lower fork 205 and the connecting piece 100 form a triangular structure.

[0029] Furthermore, a connecting tube 207 is installed on the rear seat fork 204, and the connecting tube 207 is installed on one side of the seat tube 203. The rear seat fork 204 and the seat tube 203 are connected by the connecting tube 207, which can reduce the problem of the rear seat fork 204 cantilever being too long.

[0030] The working principle is as follows: by making the upper tube 202 into a flat and thin design, the overall weight of the material used can be reduced, making the frame lighter as a whole; by extending the rear seat fork 204 to connect with the upper tube 202, and connecting the rear seat fork 204 and the seat tube 203 with a connecting tube 207, the problem of the rear seat fork 204 cantilever being too long is reduced, and the riding comfort and the strength and rigidity of the whole vehicle are improved; by designing the closing device at the rear of the frame, the weight of the material stacking at the intersection of the upper tube 202 and the seat tube 203 can be reduced; during installation, the metal sheet 1 301 and the metal sheet 2 302 are first connected by the mounting screw 310, and the mounting screw 310 is passed through the positioning hole 309 and screwed into the screw hole 311. During the process, the protrusion 307 on the metal sheet 2 302 can slide into the groove 308, and the distance between the metal sheet 2 302 and the seat tube column 206 can be adjusted. The mounting screw 310 is rotated to adjust the mounting distance between the metal sheet 1 301 and the metal sheet 2 302 so that the protrusion 307 has room to move in the groove 308. The adjusted metal sheet 1 301 and the metal sheet 2 302 are placed in the mounting groove 300 and the adjusting screw hole 305 is aligned with the mounting hole 303. Then, the seat tube column 206 is inserted into the seat tube 203, and the adjusting screw 304 is inserted into the mounting hole 303 and screwed into the adjusting screw hole 305. Finally, the adjusting screw 304 can be pressed against the extrusion groove 306. At the same time, the metal sheet 2 302 is pressed against the surface of the seat tube column 206 by the adjusting screw 304, thereby limiting the position of the seat tube column 206. At the same time, one end of the adjusting screw 304 is located in the mounting hole 303, which can limit the position of the metal sheet 1 301 and the metal sheet 2 302 and prevent them from coming out of the mounting groove 300.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight road bike frame, comprising a connecting member (100); characterized in that: The connecting member (100) is provided with a lower tube (200), a head tube (201) is provided with a top tube (202) is provided with a top tube (201), a seat tube (203) is provided with a top tube (202), the seat tube (203) is provided with a connecting member (100), one end of two rear upper forks (204) is provided with a top tube (202), the other ends of the two rear upper forks (204) are provided with rear lower forks (205), the two rear lower forks (205) are provided with a connecting member (100), a seat tube column (206) is slidably provided with an inner wall of the seat tube (203), and a closing structure is provided in the seat tube column (206).

2. A lightweight road bike frame according to claim 1, characterized in that: The closing structure comprises a mounting groove (300), the mounting groove (300) being arranged on the inner wall of the seat tube (203), a metal sheet 1 (301) and a metal sheet 2 (302) being movably arranged in the mounting groove (300), a rubber pad being arranged on one side of the metal sheet 2 (302), the rubber pad being in contact with the outer surface of the seat tube column (206), two mounting holes (303) being arranged on the seat tube (203), an adjusting screw (304) being movably arranged in the two mounting holes (303), two adjusting screw holes (305) being arranged on the metal sheet 1 (301), the two adjusting screws (304) being respectively threadedly arranged in the two adjusting screw holes (305), two extrusion grooves (306) being arranged on the metal sheet 2 (302), one end of the two adjusting screws (304) being respectively located in the two extrusion grooves (306).

3. A lightweight road bike frame according to claim 2, characterized in that: A protrusion (307) is installed on one side of the second metal sheet (302), and a groove (308) is opened on the inner wall of the first metal sheet (301), and the protrusion (307) is slidably installed in the groove (308).

4. A lightweight road bike frame according to claim 2, characterized in that: The metal sheet (301) is provided with a positioning hole (309), in which a mounting screw (310) is movably installed; the inner wall of the metal sheet (302) is provided with a screw hole (311), in which the mounting screw (310) is threadedly installed.

5. A lightweight road bike frame according to claim 1, characterized in that: The lower tube (200), the head tube (201), the upper tube (202) and the seat tube (203) form a triangular structure, and the upper tube (202), the upper fork (204), the lower fork (205) and the connecting piece (100) form a triangular structure.

6. A lightweight road bike frame according to claim 1, characterized in that: A connecting tube (207) is installed on the rear seat fork (204), and the connecting tube (207) is installed on one side of the seat tube (203).

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