An embedded structure of a motorcycle frame pipe

Abstract

The utility model relates to a kind of embedded structure of motorcycle frame pipe fitting, belong to motorcycle frame technical field. Including top pipe and bottom pipe, top pipe inside is hollow structure, top pipe is composed of left upper pipe, left lower pipe, right upper pipe and right lower pipe, bottom pipe is located in the rear end both sides of top pipe, first connecting part and second connecting part are all equipped on the bottom pipe of both sides, first connecting part and second connecting part on left side bottom pipe can respectively embed the tail end inside of left upper pipe and left lower pipe, first connecting part and second connecting part on right side bottom pipe can respectively embed the tail end inside of right upper pipe and right lower pipe;In the present scheme, first connecting part and second connecting part for butt joint are set on bottom pipe, before bottom pipe is welded with top pipe, first connecting part and second connecting part can be embedded in the hollow pipe wall inside of top pipe first, then carry out welding in alignment, can effectively avoid misplacement in welding process, improve the efficiency of production.

Description

Technical Field

[0001] This utility model belongs to the field of motorcycle frame technology and relates to an embedded structure for motorcycle frame tubes. Background Technology

[0002] The motorcycle frame is the skeleton of the motorcycle, connecting the engine, transmission system, suspension, steering system, wheels, and other structures into a whole. It not only bears the weight of the engine and other components, but is also subjected to impacts and vibrations during riding. Therefore, the motorcycle frame must have sufficient strength and rigidity, as well as good manufacturing processes.

[0003] In the existing motorcycle frame production process, the steel tubes of the frame are usually connected by welding. However, during the welding process of the top tube and bottom tube of the frame, due to the lack of a positioning structure, the positioning of the top tube and bottom tube is inaccurate. Direct welding can easily lead to misalignment, resulting in large dimensional fluctuations and low precision of the welded frame. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the current technology by proposing an embedded structure for motorcycle frame tubes. The technical problem to be solved by this utility model is: how to avoid misalignment of the welded steel tubes on the frame.

[0005] The objective of this utility model can be achieved through the following technical solution: an embedded structure for a motorcycle frame tube, comprising a top tube and a bottom tube, wherein the top tube has a hollow internal structure and is composed of an upper left tube, a lower left tube, an upper right tube, and a lower right tube, wherein the upper left tube, the lower left tube, the upper right tube, and the lower right tube are fixedly connected to each other, and the bottom tube is provided on both sides of the rear end of the top tube, wherein the bottom tube on both sides is provided with a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part on the left bottom tube can be embedded into the tail ends of the upper left tube and the lower left tube respectively, and the first connecting part and the second connecting part on the right bottom tube can be embedded into the tail ends of the upper right tube and the lower right tube respectively.

[0006] In this design, the upper left tube and the lower left tube form the left half of the top of the frame, and the upper right tube and the lower right tube form the right half of the top of the frame. The upper left tube, the lower left tube, the upper right tube, and the lower right tube are welded together to form a complete top tube. The two ends of the top tube are used to weld to the bottom tube. Before welding, the first and second connecting parts on the left bottom tube are first inserted into the tail ends of the upper left tube and the lower left tube, respectively, and then welded. The right bottom tube is welded in the same way, which can avoid the problem of misalignment during welding.

[0007] In the aforementioned embedded structure of the motorcycle frame tubes, the top tube has a narrow front and wide rear design, and a riser is provided at the front end of the top tube. The front ends of the upper left tube, lower left tube, upper right tube, and lower right tube are all welded to the riser. The riser is used to connect to the steering shaft at the front of the motorcycle, and the front ends of the top tubes are interconnected through the riser.

[0008] In the aforementioned embedded structure of the motorcycle frame tubes, symmetrical support tubes are provided between the upper left tube and the lower left tube, and between the upper right tube and the lower right tube. These support tubes are angled, and adjacent support tubes form a triangular structure. The support tubes connect the upper and lower steel tubes, and their angled arrangement improves the structural strength of the frame.

[0009] In the aforementioned embedded structure of the motorcycle frame tubes, the diameter of the first and second connecting parts is 6mm, and the inner diameter of the upper left tube, lower left tube, upper right tube, and lower right tube is 7mm. The diameter of the first and second connecting parts is smaller than the inner diameter of the top tube, thus allowing them to be embedded.

[0010] In the aforementioned embedded structure of the motorcycle frame tube, the bottom of the first connecting part and the second connecting part are provided with outwardly extending abutting parts, which can abut against the end face of the top tube. After the first connecting part and the second connecting part are fully embedded inside the top tube, the end of the top tube abuts against the abutting parts, which serves as a limiting function.

[0011] In the aforementioned embedded structure of the motorcycle frame tubes, a first horizontal tube is provided between the lower left tube and the lower right tube, a second horizontal tube is provided between the upper left tube and the upper right tube, and a third horizontal tube is provided between the bottom tubes on both sides. The first and second horizontal tubes are used to connect the top tubes on both sides, and the third horizontal tube is used to connect the bottom tubes on both sides to prevent the frame from deforming under lateral stress.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. In this solution, a first connecting part and a second connecting part are provided on the bottom pipe for docking. Since the width of the first connecting part and the second connecting part is smaller than the inner diameter of the top pipe, the first connecting part and the second connecting part can be embedded into the hollow pipe wall of the top pipe before the bottom pipe is welded to the top pipe. Then they are aligned and welded, which can effectively avoid misalignment during the welding process and improve production efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the disassembled frame of this utility model;

[0015] Figure 2 yes Figure 1 A magnified schematic diagram of the local structure;

[0016] Figure 3 This is a three-dimensional structural diagram of the vehicle frame assembly state of this utility model.

[0017] In the diagram, 1 is the jacking pipe; 1a is the upper left pipe; 1b is the lower left pipe; 1c is the upper right pipe; 1d is the lower right pipe; 2 is the bottom pipe; 2a is the first connecting part; 2b is the second connecting part; 2c is the abutment part; 3 is the riser pipe; 4 is the support pipe; 5 is the first horizontal pipe; 6 is the second horizontal pipe; and 7 is the third horizontal pipe. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] Example

[0020] like Figure 1 Combination Figure 2 As shown, the embedded structure of the motorcycle frame tube includes a top tube 1 and a bottom tube 2. The top tube 1 has a hollow internal structure and is composed of an upper left tube 1a, a lower left tube 1b, an upper right tube 1c, and a lower right tube 1d. The top tube 1 has a structure that is narrower at the front and wider at the rear. The front end of the top tube 1 is provided with a vertical tube 3. The front ends of the upper left tube 1a, lower left tube 1b, upper right tube 1c, and lower right tube 1d are all welded to the vertical tube 3. The bottom tube 2 is located on both sides of the rear end of the top tube 1. The bottom tube 2 on both sides is provided with a first connecting part 2a and a second connecting part 2b. The first connecting part 2a and the second connecting part 2b on the left bottom tube 2 can be embedded into the tail ends of the upper left tube 1a and the lower left tube 1b, respectively. The first connecting part 2a and the second connecting part 2b on the right bottom tube 2 can be embedded into the tail ends of the upper right tube 1c and the lower right tube 1d, respectively.

[0021] like Figure 3 As shown, a symmetrical support pipe 4 is provided between the upper left pipe 1a and the lower left pipe 1b, and between the upper right pipe 1c and the lower right pipe 1d. The support pipe 4 is obliquely arranged, and the adjacent support pipes 4 form a triangular structure. The bottom of the first connecting part 2a and the second connecting part 2b is provided with an outwardly extending abutment part 2c. The abutment part 2c can abut against the end face of the top pipe 1. A first horizontal pipe 5 is provided between the lower left pipe 1b and the lower right pipe 1d. A second horizontal pipe 6 is provided between the upper left pipe 1a and the upper right pipe 1c. A third horizontal pipe 7 is provided between the bottom pipes 2 on both sides.

[0022] The working principle of this solution is as follows: Figure 1-3As shown, the jacking pipe 1 has a hollow structure inside. Since the width of the first connecting part 2a and the second connecting part 2b is smaller than the inner diameter of the jacking pipe 1, during the welding process between the jacking pipe 1 and the bottom pipe 2, the first connecting part 2a and the second connecting part 2b on the left bottom pipe 2 are respectively embedded into the tail ends of the upper left pipe 1a and the lower left pipe 1b, so that they are connected and then welded. The right bottom pipe 2 is welded in the same way, which can effectively avoid misalignment during the welding process and improve production efficiency.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0024] Although this document frequently uses terms such as 1. jacking pipe; 1a. upper left pipe; 1b. lower left pipe; 1c. upper right pipe; 1d. lower right pipe; 2. bottom pipe; 2a. first connecting part; 2b. second connecting part; 2c. abutment part; 3. riser pipe; 4. support pipe; 5. first horizontal pipe; 6. second horizontal pipe; 7. third horizontal pipe, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An embedded structure for a motorcycle frame tube, comprising a top tube (1) and a bottom tube (2), wherein the top tube (1) has a hollow interior, and the top tube (1) is composed of an upper left tube (1a), a lower left tube (1b), an upper right tube (1c), and a lower right tube (1d), wherein the upper left tube (1a), lower left tube (1b), upper right tube (1c), and lower right tube (1d) are fixedly connected to each other, characterized in that, The bottom pipe (2) is located on both sides of the rear end of the top pipe (1). The bottom pipe (2) on both sides is provided with a first connecting part (2a) and a second connecting part (2b). The first connecting part (2a) and the second connecting part (2b) on the left bottom pipe (2) can be embedded into the tail end of the upper left pipe (1a) and the lower left pipe (1b) respectively. The first connecting part (2a) and the second connecting part (2b) on the right bottom pipe (2) can be embedded into the tail end of the upper right pipe (1c) and the lower right pipe (1d) respectively.

2. The embedded structure of a motorcycle frame tube according to claim 1, characterized in that, The jacking pipe (1) has a structure that is narrow at the front and wide at the back. The front end of the jacking pipe (1) is provided with a riser (3). The front ends of the upper left pipe (1a), lower left pipe (1b), upper right pipe (1c) and lower right pipe (1d) are all welded to the riser (3).

3. The embedded structure of a motorcycle frame tube according to claim 1, characterized in that, The upper left tube (1a) and the lower left tube (1b), and the upper right tube (1c) and the lower right tube (1d) are provided with structurally symmetrical support tubes (4). The support tubes (4) are arranged obliquely, and the adjacent support tubes (4) form a triangular structure.

4. The embedded structure of a motorcycle frame tube according to claim 1, characterized in that, The diameter of the first connecting part (2a) and the second connecting part (2b) is 6mm, and the inner diameter of the upper left tube (1a), the lower left tube (1b), the upper right tube (1c) and the lower right tube (1d) is 7mm.

5. The embedded structure of a motorcycle frame tube according to claim 4, characterized in that, The bottom of the first connecting part (2a) and the second connecting part (2b) is provided with an outwardly extending abutment part (2c), which can abut against the end face of the top pipe (1).

6. The embedded structure of a motorcycle frame tube according to claim 1, characterized in that, A first horizontal pipe (5) is provided between the lower left pipe (1b) and the lower right pipe (1d), a second horizontal pipe (6) is provided between the upper left pipe (1a) and the upper right pipe (1c), and a third horizontal pipe (7) is provided between the bottom pipes (2) on both sides.

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