Motorcycle split frame and aluminum part local installation structure

Abstract

The invention discloses a partial mounting structure for a split frame and an aluminum part of a motorcycle, which is characterized in that a left pipe joint is connected with the frame and a rear left connecting frame, and the left pipe joint is provided with an avoiding notch; the independent left side pipe joint is arranged on the frame to avoid the rear left connecting frame of the frame, higher strength is achieved, avoiding notches can be formed in the joint according to the positions of an engine assembly and the rear left connecting frame to guarantee the manufacturing process and performance requirements of the joint, the joint is welded to the frame body pipe in a wedge shape, the appearance is attractive, and meanwhile welding is reliable; the use universality of parts on the frame is improved, and the installation mode is reliable and safe while the appearance of an existing frame is maintained; and meanwhile, the layout and design period is shortened.

Description

Technical Field

[0001] The invention relates to a local mounting structure of a motorcycle, in particular to a local mounting structure of a motorcycle split frame and aluminum parts. Background Art

[0002] The motorcycle frame is an important part of the motorcycle. As the overall support of the motorcycle, it needs to have a certain strength and rigidity. The frame is usually also used as an exterior part and is partially exposed. In the overall layout of the motorcycle, especially for motorcycles with compact space layout, the frame is often connected to many other parts. For example, a steel and aluminum hybrid motorcycle frame usually uses bushings welded on the frame and screws through the bushings to connect the frame and aluminum parts together. At the same time, in order to ensure that the bushing is welded to the frame reliably, sufficient lateral space must be reserved at both ends of the bushing for welding. In the process of component structure design, while meeting the performance, it is also affected by the spatial layout of the vehicle, especially the peripheral clearance with moving parts such as the engine assembly. When the position of the aluminum part is fixed, the lateral part of the aluminum part connected to the bushing generally requires sufficient space for placing the bushing.

[0003] In order to achieve the strength and rigidity of the motorcycle frame connection while achieving an aesthetic and stable effect, the existing technology generally adopts the method of adjusting the overall direction of the frame tube or rearranging the relevant parts, which increases the mold opening cost and cycle of the frame, has poor parts versatility, prolongs the design cycle, greatly increases the overall cost, and is not conducive to promotion and implementation. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a motorcycle split frame and aluminum parts local installation structure with reliable structure, strong adaptability and further reduced space required for components.

[0005] Technical solution: The motorcycle split frame and aluminum part local installation structure of the present invention include a frame, the local installation structure is a left-side pipe joint connecting the frame and the rear left connecting frame, the rear left connecting frame is placed on the right side of the left-side pipe joint, one end of the left-side pipe joint is a connecting column connecting the frame, the other end is provided with a groove, a through hole is provided in the groove, the rear left connecting frame is bolted to the left-side pipe joint through the through hole, and the left-side pipe joint is provided with an avoidance recess; wherein, in order to ensure the clearance between the rear left connecting frame and the engine assembly, the lateral position of the area on the rear left connecting frame that cooperates with the left-side pipe joint is fixed; the through hole is provided in the groove in a U-shaped structure with a hole, which reduces the weight of the parts.

[0006] Among them, the avoidance recess is L-shaped, and the avoidance recess accounts for 1 / 3 to 1 / 4 of the thickness of the left pipe joint; the engine assembly is arranged on the right side of the left pipe joint. Since the lateral space between the frame and the rear left connecting frame is fixed, in order to ensure the connection among the left pipe joint, the frame and the rear left connecting frame, a recess for avoiding the rear left connecting frame is arranged on the left pipe joint while the gap between the rear left connecting frame and the engine assembly remains unchanged. The thickness of the avoidance recess not only ensures the structural stability of the left pipe joint, but also maintains pores to enable the components to be compactly placed, which is very suitable for motorcycles with compact space layout.

[0007] Wherein, the connecting column is a solid cylindrical pipe joint, and the outer diameter of the connecting column is consistent with the inner diameter of the left side pipe of the frame.

[0008] Wherein, a step is provided on the connecting column of the left pipe joint, and the step forms a wedge-shaped structure with the left pipe.

[0009] Among them, the connecting column and the left side tube of the frame are welded, the length of the connecting column and the left side tube is 8 to 12 mm, the outer diameter of the connecting column on the left side pipe joint is the same as the inner diameter of the left side tube, the radial weld gap between the connecting column and the left side tube is 1 to 2 mm, and the port mating part is a wedge-shaped structure.

[0010] Wherein, the groove is cylindrical or truncated cone-shaped.

[0011] Wherein, the left pipe joint is a steel casting, which increases strength, is reliable to install, and has good consistency in part size.

[0012] Among them, a connection point is provided on the rear left connecting frame, and the connection point of the rear left connecting frame cooperates with the avoidance recess on the left pipe joint, so that the rear left connecting frame maintains a gap with the engine assembly, further reducing the space required for installation; the connection point is bolted to the left pipe joint through a through hole, and the left pipe joint and the rear left connecting frame are connected together by an M10x25x1.25 hexagon socket head screw.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the motorcycle split frame and aluminum parts local installation structure of the present invention, by arranging an independent left-side pipe joint on the frame to avoid the rear left connecting frame of the frame, the solid pipe joint adopted by the left-side pipe joint has higher strength, and the avoidance recess can be arranged on the joint according to the position of the engine assembly and the rear left connecting frame to ensure the manufacturing process and performance requirements of the joint, the joint is welded with the frame main body pipe in a wedge shape, and the appearance is beautiful and the welding is reliable; the versatility of the parts on the frame is increased, and the installation method is reliable and safe while maintaining the appearance of the existing frame; and the layout and design cycle are shortened at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a connection schematic diagram of the present invention;

[0015] Figure 2 An exploded schematic diagram of the connection structure of the present invention;

[0016] Figure 3 It is a structural cross-sectional view of the left side pipe joint of the present invention;

[0017] Figure 4 It is a structural front view of the left side pipe joint of the present invention;

[0018] Among them, the left side pipe joint 1, the frame 2, the engine assembly 3, the rear left connecting frame 4, the hexagon socket head screw 5, the groove 11, the through hole 12, the avoidance recess 13, the step 14, the connecting column 15, the connecting point 41, and the connecting port 42. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0020] Example 1

[0021] A motorcycle split frame and aluminum parts local installation structure, including a frame 2, a left pipe joint 1 connecting the frame 2 and a rear left connecting frame 4, an engine assembly 3 is arranged on the right side of the left pipe joint 1, and the rear left connecting frame 4 is arranged on the right side of the left pipe joint 1. The area on the rear left connecting frame 4 that cooperates with the left pipe joint 1 is fixed in a horizontal position; one end of the left pipe joint 1 is a connecting column 15 connected to the frame 2, and one end is provided with a cylindrical groove 11, and a through hole 12 is provided in the groove 11. The rear left connecting frame 4 is bolted to the left pipe joint 1 through the through hole 12, and the left pipe joint 1 is provided with an avoidance recess 13. The avoidance recess 13 is L-shaped and accounts for 1 / 4 of the thickness of the left pipe joint 1. The left pipe joint 1 has the function of avoiding the rear left connecting frame 4 to ensure a safe gap between the rear left connecting frame 4 and the engine assembly 3.

[0022] The connecting column 15 is a solid cylindrical pipe joint, and the outer diameter of the connecting column 15 is consistent with the inner diameter of the left side tube 21 of the frame 2; a step 14 is provided on the connecting column 15 of the left side pipe joint 1, and the step 14 forms a wedge-shaped structure with the left side tube 21; the connecting column 15 is welded to the left side tube 21 of the frame 2; the nesting length of the connecting column 15 and the left side tube 21 is 8 to 12 mm, and the welding method is a single-sided V-shaped full-circle weld connection. The outer diameter of the connecting column on the left side pipe joint is φ23 mm, and the nesting inner diameter of the left side tube is φ23 mm. The radial weld gap between the connecting column and the left side tube is 1 mm, and the port matching part is a wedge-shaped structure.

[0023] A connection point 41 is provided on the rear left connecting frame 4. The connection point 41 of the rear left connecting frame 4 cooperates with the avoidance recess 13 on the left pipe joint 1 to leave space for other components, thereby reducing the space required for the whole. The connection point 41 is bolted to the left pipe joint 1 through the through hole 12. The bolt connection adopts a hexagon socket head screw 5. The hexagon socket head screw 5 of M10x25x1.25 is passed through the through hole 12 on the left pipe joint 1 to connect to the rear left connecting frame 4. The rear left connecting frame 4 is also provided with a connection port 42 and a common interface on the frame 2, which is reinforced by a M10x25x1.25 hexagon socket head screw.

[0024] The motorcycle split frame and aluminum component local installation structure of the present invention avoids the frame rear left connecting frame 4 by arranging an independent left pipe joint 1 on the frame 2. The lower part of the left pipe joint 1 is solid and made of cast steel, which has higher strength. The avoidance recess 13 can be set on the left pipe joint 1 according to the position of the engine assembly 3 and the rear left connecting frame 4 to ensure the manufacturing process and performance requirements of the joint. The joint is welded to the lower left pipe 21 on the frame 2 in a wedge shape, which has beautiful appearance and reliable welding. At the same time, this technology reduces the adjustment of the entire vehicle layout as little as possible.

Claims

1. A motorcycle split frame and aluminum part local mounting structure, comprising a frame (2), characterized in that: The local installation structure is a left pipe joint (1) connecting the vehicle frame (2) and the rear left connecting frame (4), the rear left connecting frame (4) is placed on the right side of the left pipe joint (1), one end of the left pipe joint (1) is a connecting column (15) connected to the vehicle frame (2), and one end is provided with a groove (11), a through hole (12) is provided in the groove (11), the rear left connecting frame (4) is bolted to the left pipe joint (1) through the through hole (12), and the left pipe joint (1) is provided with an avoidance recess (13).

2. The local installation structure according to claim 1, characterized in that: The avoidance recess (13) is L-shaped.

3. The local installation structure according to claim 1, characterized in that: The avoidance recess (13) accounts for 1 / 3 to 1 / 4 of the thickness of the left pipe joint (1).

4. The local installation structure according to claim 1, characterized in that: An engine assembly (3) is arranged on the right side of the left pipe joint (1).

5. The local mounting structure according to claim 1, characterized in that: The connecting column (15) is a solid cylindrical pipe joint, and the outer diameter of the connecting column (15) is consistent with the inner diameter of the left side pipe (21) of the frame (2).

6. The local installation structure according to claim 1, characterized in that: A step (14) is provided on the connection column (15) of the left pipe joint (1), and the step (14) and the left pipe (21) form a wedge-shaped structure.

7. The local mounting structure according to claim 6, characterized in that: The connecting column (15) is connected to the left side tube (21) of the vehicle frame (2) by welding; the nesting length of the connecting column (15) and the left side tube (21) is 8 to 12 mm.

8. The local mounting structure according to claim 1, characterized in that: The groove (11) is cylindrical or truncated cone-shaped.

9. The local mounting structure according to claim 1, characterized in that: The left side pipe joint (1) is a steel casting.

10. The local installation structure according to claim 1, characterized in that: A connection point (41) is provided on the rear left connection frame (4), and the connection point (41) is bolted to the left pipe joint (1) through a through hole (12), wherein the bolt connection adopts a hexagon socket head screw (5).

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