Split frame structure for a motorcycle

Abstract

The utility model relates to a split type frame structure of motorcycle belongs to motorcycle frame technical field. Including front frame, the rear end at front frame is equipped with the connecting pipe, the both sides of front frame are composed by left side beam pipe and right side beam pipe, the both ends of connecting pipe are fixed link with the inboard of left side beam pipe and right side beam pipe, the both ends at connecting pipe are equipped with the fixed link's first connecting portion, the last end at left side beam pipe and right side beam pipe is equipped with the fixed link's second connecting portion, be equipped with rear frame on first connecting portion and second connecting portion, the junction of rear frame and first connecting portion and second connecting portion carries out the connection through bolt, in this scheme, welding is carried out separately to front frame and rear frame, then two frames are assembled together through bolt structure, solve the technical problem that the whole frame in the prior art is too long, lead to the technical problem that easy deformation after welding, reduce welding deformation, improve dimensional accuracy, can also increase the whole frame elasticity.

Description

Technical Field

[0001] This utility model belongs to the field of motorcycle frame technology and relates to a detachable frame structure for motorcycles. Background Technology

[0002] The motorcycle frame is the most important part of the motorcycle structure. The frame is mainly used to support the vehicle structure, bear the weight, provide handling and stability, and affect riding comfort.

[0003] In the production process of motorcycle frames, existing technology uses steel tubes for welding, and the frames are all made of integral welding structure. Since there are many welding positions on the frame and the frame is relatively long, the integral welding method is prone to deformation after welding, which affects the dimensional accuracy of the frame. Summary of the Invention

[0004] The purpose of this utility model is to address the problems existing in the current technology by proposing a detachable frame structure for motorcycles. The technical problem to be solved by this utility model is: how to prevent the frame from deforming during the welding process.

[0005] The objective of this utility model can be achieved through the following technical solution: A split frame structure for a motorcycle, including a front frame, a riser tube at the front end of the front frame, a connecting tube at the rear end of the front frame, and a left beam tube and a right beam tube on both sides of the front frame. The front ends of the left beam tube and the right beam tube are fixedly connected to the riser tube, and the two ends of the connecting tube are fixedly connected to the inner sides of the left beam tube and the right beam tube. A first connecting part is fixedly connected at both ends of the connecting tube, and a second connecting part is fixedly connected at the ends of the left beam tube and the right beam tube. A rear frame is provided on the first connecting part and the second connecting part, and the rear frame is connected to the first connecting part and the second connecting part by bolts.

[0006] In this solution, the frame structure is divided into two parts: a front frame and a rear frame. The front end of the front frame is welded with a vertical tube, which is used to install the motorcycle's steering shaft. The rear end of the front frame is connected to the rear frame through a first and second connecting part. After aligning the structures on the front and rear frames, bolts are used to connect the front and rear frames, fixing the two parts of the frame together as a whole. Through this method, the front and rear frames can be welded separately during the frame production process, and then the two frames are assembled together using bolts. This solves the technical problem in the prior art where the overall frame is too long, leading to easy deformation after welding. It reduces welding deformation, improves dimensional accuracy, and also increases the overall elasticity of the frame.

[0007] In the aforementioned split-frame structure of the motorcycle, the rear frame consists of a left rear frame and a right rear frame. A first connecting plate is provided on the inner front side of both the left and right rear frames, and a second connecting plate is provided on the inner rear side of both the left and right rear frames. The first and second connecting plates at both ends connect the left and right rear frames, improving the structural strength of the frame.

[0008] In the aforementioned split-frame structure of the motorcycle, the left and right beam tubes, the left rear frame, and the right rear frame all have several fixed support tubes inside, and these support tubes are arranged at an angle. The inclination directions of adjacent support tubes are different, forming a triangular structure between the support tubes and the frame, thereby improving the structural strength of the frame.

[0009] In the aforementioned split-frame structure of the motorcycle, several mounting buckles are provided on the walls of the left and right beam tubes, the left rear frame, and the right rear frame. These mounting buckles are used to connect to the external structures of the frame, facilitating installation.

[0010] In the aforementioned split-frame structure of the motorcycle, the second connecting part extends to the bottom of the front frame. An upper cross tube is fixedly connected to the inner top of the second connecting part, and a lower cross tube is fixedly connected to the inner bottom of the second connecting part. The upper and lower cross tubes are used to connect the second connecting parts on both sides.

[0011] In the aforementioned split-frame structure of the motorcycle, the second connecting part is provided with a mounting groove, into which the front end of the rear frame can be inserted. The second connecting part is provided with several hollow holes. The mounting groove facilitates docking with the rear frame structure, making the connection between the front and rear frames easier. The hollow holes reduce the weight of the second connecting part, making the frame lighter.

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

[0013] 1. In this solution, during the production of the vehicle frame, the front frame and the rear frame can be welded separately, and then the two frames can be assembled together by bolts. This solves the technical problem in the prior art that the overall frame is too long and therefore easily deformed after welding, reduces welding deformation, improves dimensional accuracy, and also increases the overall elasticity of the frame. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front and rear frames of this utility model in their disassembled state;

[0015] Figure 2 This is a schematic diagram of the combined structure of the front and rear frames of this utility model.

[0016] In the diagram, 1. Front frame; 1a. Left side beam tube; 1b. Right side beam tube; 2. Upright tube; 3. Connecting tube; 3a. First connecting part; 4. Second connecting part; 4a. Upper horizontal tube; 4b. Lower horizontal tube; 4c. Mounting groove; 4d. Hole; 5. Rear frame; 5a. Left rear frame; 5b. Right rear frame; 6. Support tube; 7. Mounting buckle; 8. First connecting plate; 9. Second connecting plate. Detailed Implementation

[0017] 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.

[0018] Example

[0019] like Figure 1 As shown, the motorcycle has a split frame structure, including a front frame 1 and a rear frame 5. The front frame 1 has a riser tube 2 at its front end and a connecting tube 3 at its rear end. The front frame 1 is composed of a left beam tube 1a and a right beam tube 1b on both sides. The front ends of the left beam tube 1a and the right beam tube 1b are fixed to the riser tube 2. The two ends of the connecting tube 3 are fixed to the inner sides of the left beam tube 1a and the right beam tube 1b. The two ends of the connecting tube 3 are provided with a first connecting part 3a, and the ends of the left beam tube 1a and the right beam tube 1b are provided with a second connecting part 4. The second connecting part 4 extends to the bottom of the front frame 1 and has a mounting groove 4c. The top inner side of the second connecting part 4 is provided with an upper cross tube 4a, and the bottom inner side of the second connecting part 4 is provided with a lower cross tube 4b. The rear frame 5 is composed of a left rear frame 5a and a right rear frame 5b.

[0020] like Figure 2 As shown, the front inner side of the left rear frame 5a and the right rear frame 5b is provided with a first connecting plate 8, and the rear inner side of the left rear frame 5a and the right rear frame 5b is provided with a second connecting plate 9. The front top of the rear frame 5 is bolted to the first connecting part 3a, and the front bottom of the rear frame 5 is bolted to the mounting groove 4c on the second connecting part 4. The interior of the left beam tube 1a, the right beam tube 1b, the left rear frame 5a and the right rear frame 5b is provided with several fixed support tubes 6. The support tubes 6 are arranged obliquely. The tube walls of the left beam tube 1a, the right beam tube 1b, the left rear frame 5a and the right rear frame 5b are provided with several fixed mounting buckles 7. The second connecting part 4 is provided with several hollow holes 4d.

[0021] The working principle of this solution is as follows: Figure 1-2As shown, during the frame production process, the front frame 1 and the rear frame 5 are welded separately. Then, the top front end of the rear frame 5 is connected to the first connecting part 3a, and the bottom front end of the rear frame 5 is connected to the second connecting part 4. Finally, bolts are used to fix the two frames together, so that the frame forms a whole. This solves the technical problem in the prior art that the frame is too long and therefore easily deformed after welding. It reduces welding deformation, improves dimensional accuracy, and also increases the overall elasticity of the frame.

[0022] 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.

[0023] Although this document frequently uses terms such as 1. front frame; 1a. left side beam tube; 1b. right side beam tube; 2. upright tube; 3. connecting tube; 3a. first connecting part; 4. second connecting part; 4a. upper horizontal tube; 4b. lower horizontal tube; 4c. mounting groove; 4d. hollow hole; 5. rear frame; 5a. left rear frame; 5b. right rear frame; 6. support tube; 7. mounting buckle; 8. first connecting plate; 9. second connecting plate, 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. A split-frame structure for a motorcycle, comprising a front frame (1), wherein a riser (2) is provided at the front end of the front frame (1), a connecting pipe (3) is provided at the rear end of the front frame (1), the front frame (1) is composed of a left beam tube (1a) and a right beam tube (1b) on both sides, the front ends of the left beam tube (1a) and the right beam tube (1b) are fixedly connected to the riser (2), and both ends of the connecting pipe (3) are fixedly connected to the inner sides of the left beam tube (1a) and the right beam tube (1b), characterized in that, The connecting pipe (3) has a first connecting part (3a) fixed at both ends, and the left beam pipe (1a) and the right beam pipe (1b) have a second connecting part (4) fixed at their ends. The first connecting part (3a) and the second connecting part (4) are provided with a rear frame (5). The connection between the rear frame (5) and the first connecting part (3a) and the second connecting part (4) is made by bolts.

2. The split-frame structure for a motorcycle according to claim 1, characterized in that, The rear frame (5) consists of a left rear frame (5a) and a right rear frame (5b). The front inner side of the left rear frame (5a) and the right rear frame (5b) are provided with a first connecting plate (8), and the rear inner side of the left rear frame (5a) and the right rear frame (5b) are provided with a second connecting plate (9).

3. The detachable frame structure for a motorcycle according to claim 2, characterized in that, The left beam tube (1a), right beam tube (1b), left rear frame (5a) and right rear frame (5b) are each provided with several fixed support tubes (6), which are arranged obliquely.

4. The split frame structure of a motorcycle according to claim 2, characterized in that, Several mounting buckles (7) are provided on the walls of the left beam tube (1a), right beam tube (1b), left rear frame (5a) and right rear frame (5b).

5. The split frame structure of a motorcycle according to claim 1, characterized in that, The second connecting part (4) extends to the bottom of the front frame (1). The upper horizontal tube (4a) is fixed to the inner side of the top of the second connecting part (4), and the lower horizontal tube (4b) is fixed to the inner side of the bottom of the second connecting part (4).

6. The split frame structure of a motorcycle according to claim 4, characterized in that, The second connecting part (4) is provided with a mounting groove (4c), and the front end of the rear frame (5) can be inserted into the mounting groove (4c). The second connecting part (4) is provided with several hollow holes (4d).

Images