Frame of straddle type motorcycle

Abstract

The utility model discloses a frame of a straddle type motorcycle, which relates to the technical field of motorcycles and comprises an upper frame, a first mounting shaft and a second mounting shaft, and two ends of a second connecting section are connected to a main shaft and a reinforcing shaft. The upper frame comprises a main shaft, a front shaft and a reinforcing shaft, and the first connecting section is connected to the outer wall of the main shaft. And a U-shaped cavity is defined by the first mounting shaft, the reinforcing shaft and the second mounting shaft. Through the arrangement of the reinforcing shaft, the structural strength and stability of the motorcycle frame are improved. The power equipment is connected to the first mounting shaft and the second mounting shaft, so that mounting and dismounting of the power equipment are facilitated. The length of the first connecting section is H1, the length of the main shaft is L1, the length of the second connecting section is H2, the length of the first mounting shaft is L2, and H1 / L1 is larger than or equal to 0.2 and smaller than or equal to 0.3, and H1 / L1 is larger than or equal to 0.1 and smaller than or equal to 0.2, so that the structural strength of the motorcycle frame is guaranteed, the structural stability of the motorcycle frame is enhanced, and the mounting space of power equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, in particular to a frame of a straddle-type motorcycle. Background Art

[0002] Generally, a motorcycle is composed of a frame, power equipment, transmission equipment, wheels and other parts. The motorcycle frame is the core structure of the whole vehicle, carrying key parts such as the engine, transmission equipment, wheels, etc., to ensure the vehicle runs stably and safely. The motorcycle frame not only determines the handling performance and driving comfort of the motorcycle, but also provides protection in the event of a collision. It is an indispensable and important part of the motorcycle. At present, it is not easy to assemble the power equipment on the motorcycle frame, and the structural strength of the motorcycle frame is not high enough. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, to provide a frame of a straddle-type motorcycle, to improve the structural strength of the motorcycle frame, and to facilitate the assembly of the motorcycle frame and a power device.

[0004] According to an embodiment of the utility model, a frame of a straddle-type motorcycle is provided, comprising: an upper frame, a first mounting shaft and a second mounting shaft, the upper frame comprising a main shaft, a front shaft and a reinforcing shaft, one end of the main shaft is connected to the outer wall of the front shaft, the reinforcing shaft is provided with a first connecting section, the first connecting section is connected to the outer wall of the main shaft, the first connecting section is located at the end of the main shaft away from the front shaft; the first mounting shaft is plugged into the upper frame, the first mounting shaft is provided with a second connecting section, both ends of the second connecting section are connected to the main shaft and the reinforcing shaft; the second mounting shaft is connected to At one end of the main shaft, the two second mounting shafts are located on both sides of the axis of the main shaft in a horizontal plane, and the first mounting shaft, the reinforcement shaft and the second mounting shaft enclose a U-shaped cavity, and the U-shaped cavity is used to accommodate power equipment, and the power equipment is respectively connected to the first mounting shaft and the second mounting shaft; the length of the first connecting section is H1, and the length of the main shaft is L1, which satisfies the design: 0.2≤H1 / L1≤0.3; the length of the second connecting section is H2, and the length of the first mounting shaft is L2, which satisfies the design: 0.1≤H2 / L2≤0.2.

[0005] The frame of a straddle-type motorcycle described in the utility model has at least the following beneficial effects: the present embodiment is provided with an upper frame, a first mounting shaft and a second mounting shaft, and the upper frame includes a main shaft, a front shaft and a reinforcing shaft. A U-shaped cavity is enclosed between the first mounting shaft, the reinforcing shaft and the second mounting shaft, and the U-shaped cavity can accommodate a power device. A reinforcing shaft is provided between the main shaft and the first mounting shaft to increase the connection strength between the upper frame and the first mounting shaft, thereby improving the structural strength and stability of the motorcycle frame. The power device is respectively connected to the first mounting shaft and the second mounting shaft, and the power device is accommodated in the U-shaped cavity, so as to facilitate the installation and disassembly of the power device. The length of the first connecting section is H1, and the length of the main shaft is L 1， The length of the second connecting section is H2, and the length of the first installation axis is L2. By satisfying 0.2≤H1 / L1≤0.3 and 0.1≤H2 / L2≤0.2, the structural strength of the motorcycle frame is ensured to enhance the structural stability of the motorcycle frame and ensure the installation space of the power equipment.

[0006] According to the frame of a straddle-type motorcycle described in the utility model, the upper frame is provided with two reinforcing plates, the reinforcing plates are connected to the main shaft, the front shaft and the first mounting shaft, and the two reinforcing plates are located on both sides of the axis of the main shaft.

[0007] According to the frame of a straddle-type motorcycle described in the utility model, the reinforcing plate is provided with a positioning opening, and in a vertical plane, the reinforcing shaft passes through the positioning opening.

[0008] According to the frame of a straddle-type motorcycle described in the utility model, the reinforcing plate is provided with a threading ring, and the threading ring is used for threading the line.

[0009] According to the frame of a straddle-type motorcycle described in the utility model, the angle between the center line of the front axle and the vertical direction is A, which satisfies the following condition in design: 25°≤A≤35°.

[0010] According to the frame of a straddle-type motorcycle of the utility model, the axes of the main shaft, the front shaft, the reinforcement shaft and the first installation shaft are located in the same plane.

[0011] According to the frame of a straddle-type motorcycle described in the utility model, a plurality of first mounting holes are provided at one end of the first mounting axis away from the upper frame, a plurality of second mounting holes are provided at one end of the second mounting axis away from the main axis, and the first mounting holes and the second mounting holes are used to connect the power equipment.

[0012] According to the frame of a straddle-type motorcycle described in the utility model, a reinforcing plate is provided on the end of the second mounting shaft away from the main shaft, and a plurality of the second mounting holes are located on the reinforcing plate.

[0013] According to a straddle-type motorcycle frame described in the utility model, the second mounting shaft is provided with two extension plates, the two extension plates are located on both sides of the reinforcement plate, the extension plates are provided with third mounting holes, and the third mounting holes are used to install the power equipment.

[0014] According to the frame of a straddle-type motorcycle described in the utility model, the frame of the straddle-type motorcycle also includes a lower frame, and the lower frame includes the second mounting axis, a load-bearing rod and a connecting rod. The second mounting axis, the load-bearing rod and the connecting rod form a triangle, and the lower frame is provided with two groups. In a horizontal plane, the two groups of the lower frames are located on both sides of the axis of the main shaft.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a front view of a frame of a straddle-type motorcycle in an embodiment of the utility model;

[0018] Figure 2 A front view of a frame of a straddle-type motorcycle in an embodiment of the utility model

[0019] Figure 3 The figure is a top view of a frame of a straddle-type motorcycle in an embodiment of the utility model.

[0020] Reference numerals:

[0021] Upper frame 100; main shaft 110; front shaft 120; reinforcement shaft 130; first connecting section 131; reinforcement plate 140; positioning port 141; threading ring 142; reinforcement cavity 150;

[0022] First mounting shaft 200; second connecting section 201; first mounting hole 202;

[0023] Lower frame 300; second mounting shaft 310; second mounting hole 301; reinforcing plate 320; extension plate 330; third mounting hole 331; bearing rod 340; connecting rod 350;

[0024] U-shaped cavity 400 . DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figure 1 and Figure 2The embodiment of the utility model provides a frame of a straddle-type motorcycle, comprising an upper frame 100, a first mounting shaft 200 and a second mounting shaft 310; the upper frame 100 comprises a main shaft 110, a front shaft 120 and a reinforcing shaft 130, one end of the main shaft 110 is connected to the outer wall of the front shaft 120, the reinforcing shaft 130 is provided with a first connecting section 131, the outer wall of the first connection is fixedly connected to the outer wall of the main shaft 110, and the first connecting section 131 is located at one end of the main shaft 110 away from the front shaft 120. The first mounting shaft 200 is plugged into the upper frame 100, the first mounting shaft 200 is provided with a second connecting section 201, the second connecting section 201 is located at one end of the first mounting shaft 200, one end of the second connecting section 201 is connected to the outer wall of the main shaft 110, and the other end is connected to the reinforcing shaft 130. The second installation shaft 310 is connected to one end of the main shaft 110. The second installation shaft 310 is located at the end of the main shaft 110 away from the front shaft 120. Two second installation shafts 310 are provided. In the horizontal plane, the two second installation shafts 310 are located on both sides of the axis of the main shaft 110. The first installation shaft 200, the reinforcement shaft 130 and the second installation shaft 310 enclose a U-shaped cavity 400. The U-shaped cavity 400 is used to accommodate power equipment. The power equipment is respectively connected to the first installation shaft 200 and the second installation shaft 310. The power equipment is respectively connected to the first installation shaft 200 and the second installation shaft 310 through the power equipment, and the power equipment is accommodated in the U-shaped cavity 400, which is convenient for installation and removal of the power equipment and for maintenance and repair of the power equipment.

[0030] It can be understood that by connecting the main shaft 110 and the first installation shaft 200 at both ends of the reinforcing shaft 130 respectively, the structural strength of the motorcycle frame is improved, the load and stress borne by the main shaft 110 and the first installation shaft 200 are dispersed, and the stress distribution of the motorcycle frame is optimized.

[0031] Reference Figure 2It can be understood that the reinforcing shaft 130, the main shaft 110, the front shaft 120 and the second connecting section 201 enclose a reinforcing cavity 150, and the reinforcing cavity 150 is located above the U-shaped cavity 400. The length of the first connecting section 131 is H1, and the length of the main shaft 110 is L1, which satisfies the following design: 0.2≤H1 / L1≤0.3. When H1 / L1 is less than 0.2, the length of the first connecting section 131 is insufficient, that is, the connection strength of the reinforcing shaft 130 and the main shaft 110 is low, resulting in insufficient structural strength and stability of the frame, and the frame is prone to deformation and distortion. At the same time, the area of ​​the U-shaped cavity 400 is reduced, which is not conducive to accommodating power equipment. When H1 / L1 is greater than 0.3, the first connecting section 131 is too long, that is, the connection between the reinforcing shaft 130 and the main shaft 110 is too long, and the main shaft 110 and the first connecting section 131 are more likely to deform and twist, affecting the controllability and stability of the motorcycle, and the weight of the frame increases, which is not conducive to the controllability and responsiveness of the frame. At the same time, the area of ​​the reinforcing cavity 150 is too small, resulting in insufficient structural strength of the frame, stress concentration on the frame, and more vibration and noise during driving. By 0.2≤H1 / L1, the length of the first connecting section 131 is guaranteed, and then the connection strength between the reinforcing shaft 130 and the main shaft 110 is enhanced, the structural strength and stability of the frame are guaranteed, and at the same time, the area of ​​the U-shaped cavity 400 is avoided to be too small, and the installation space of the power equipment is guaranteed. By H1 / L1≤0.3, the area of ​​the reinforcing cavity 150 is guaranteed, the structural strength of the frame is guaranteed, and the controllability and responsiveness of the motorcycle are improved.

[0032] Reference Figure 2 It can be understood that the length of the second connecting section 201 is H2, and the length of the first installation shaft 200 is L2, which satisfies the following in design: 0.1≤H2 / L2≤0.2. When H2 / L2 is less than 0.1, the length of the second connecting section 201 is too small, that is, the distance between the connection between the reinforcing shaft 130 and the first reinforcing shaft 130 and the connection between the front shaft 120 and the first reinforcing shaft 130 is too close, resulting in stress concentration at the connection between the two ends of the second connecting section 201. At the same time, the area of ​​the reinforcing cavity 150 is too small, resulting in insufficient structural strength and stability of the frame, and the frame is prone to stress concentration, and the frame is prone to vibration and noise during driving. When H2 / L2 is greater than 0.2, the length of the second connecting section 201 is too long, resulting in an increase in the weight of the reinforcing shaft 130, which is not conducive to the stability of the frame structure. At the same time, the area of ​​the U-shaped cavity 400 is too small, which is not conducive to the maintenance and repair of the power equipment, limits the size of the power equipment, and is not conducive to the heat dissipation of the power equipment. By setting 0.1≤H2 / L2, the area of ​​the reinforcement cavity 150 is prevented from being too small, the structural strength of the frame is ensured, and the stress distribution of the frame is optimized. By setting H2 / L2≤0.2, it is beneficial to reduce the weight of the frame, prevent the area of ​​the U-shaped cavity 400 from being too small, and ensure the installation space of the power equipment.

[0033] Reference Figure 1 and Figure 2 The upper frame 100 is provided with two reinforcing plates 140, which are connected to the main shaft 110, the front shaft 120 and the first mounting shaft 200, and the two reinforcing plates 140 are located on both sides of the axis of the main shaft 110. The reinforcing plates 140 are connected to the main shaft 110, the front shaft 120 and the first mounting shaft 200, thereby improving the structural strength of the frame. The reinforcing plates 140 convert the bending moment of the frame into the tensile stress of the reinforcing plates 140, thereby improving the rigidity of the frame, ensuring the stability and safety of the motorcycle, and optimizing the stress distribution of the frame.

[0034] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the reinforcing plate 140 is provided with a positioning hole, and the reinforcing shaft 130 is inserted into the positioning hole 141 in the vertical plane. When welding the reinforcing plate 140, the reinforcing shaft 130 can be inserted into the positioning hole 141 to ensure the connection position of the reinforcing plate 140 and improve the installation convenience of the reinforcing plate 140.

[0035] Reference Figure 2 and Figure 3 In some embodiments of the present invention, the reinforcing plate 140 is provided with a wire threading ring 142, and the wire threading ring 142 is used to thread the wire, so as to facilitate the distribution of the cables in the frame, improve the maintenance and management of the cables, and reduce the friction between the cables and other components.

[0036] Reference Figure 1 and Figure 2 , the angle between the center line of the front axle 120 and the vertical direction is A, which is designed to meet the following conditions: 25°≤A≤35°. This ensures the kingpin inclination angle of the motorcycle and the driving stability of the motorcycle. When A is less than 25°, the kingpin inclination angle is too small, which is not conducive to the steering of the motorcycle, and the braking stability is poor, which poses a safety hazard. When A is greater than 35°, the kingpin inclination angle is too large, so that the steering of the motorcycle requires greater force, which increases the burden on the driver and makes the tires easy to wear.

[0037] Reference Figure 3 In some embodiments of the present invention, the axes of the main shaft 110, the front shaft 120, the reinforcing shaft 130, and the first installation shaft 200 are located in the same plane to improve the overall torsion resistance of the frame, improve the rigidity and stability of the frame, and thus improve the controllability and safety.

[0038] Reference Figure 1In some embodiments of the utility model, a first mounting shaft 200 is provided with a plurality of first mounting holes 202 at one end away from the upper frame 100, and a second mounting shaft 310 is provided with a plurality of second mounting holes 301 at one end away from the main shaft 110. The first mounting holes 202 and the second mounting holes 301 are used to connect the power equipment. The first mounting holes 202 and the second mounting holes 301 are used to connect the power equipment to ensure that the power equipment is connected to the first mounting shaft 200 and the second mounting shaft 310 respectively.

[0039] Reference Figure 1 In some embodiments of the utility model, a reinforcing plate 320 is provided at one end of the second mounting shaft 310 away from the main shaft 110, and a plurality of second mounting holes 301 are located on the reinforcing plate 320. The structural strength of the second mounting shaft 310 is enhanced by providing the reinforcing plate 320. By providing the plurality of second mounting holes 301 on the reinforcing plate 320, it is avoided to directly provide mounting holes on the second mounting shaft 310, thereby improving the structural strength of the second mounting shaft 310.

[0040] Reference Figure 1 In some embodiments of the utility model, two extension plates 330 are provided at one end of the second installation shaft 310 away from the main shaft 110. The two extension plates 330 are located on both sides of the reinforcement plate 320. The extension plates 330 are provided with third installation holes 331, and the third installation holes 331 are used to install the power equipment. By providing the extension plates 330, the structural strength of the second installation shaft 310 is further improved. The third installation holes 331 are used to install the power equipment to increase the connection strength between the second installation shaft 310 and the power equipment.

[0041] Reference Figure 1 and Figure 2 In some embodiments of the utility model, a frame of a straddle-type motorcycle in the embodiment of the utility model is further provided with a lower frame 300, the lower frame 300 includes a second mounting axis 310, a load-bearing rod 340 and a connecting rod 350, the second mounting periphery, the load-bearing rod 340 and the connecting rod 350 form a triangle, and the lower frame 300 is provided with two groups, and in the horizontal plane, the two groups of lower frames 300 are located on both sides of the axis of the main shaft 110. The second mounting periphery, the load-bearing rod 340 and the connecting rod 350 form a triangle to improve the structural strength of the lower frame 300, improve the load-bearing capacity of the lower frame 300, and thus improve the structural strength and stability of the frame.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 claims and their equivalents.

Claims

1. A frame of a straddle-type motorcycle, characterized in that: include: An upper frame, the upper frame comprising a main shaft, a front shaft and a reinforcing shaft, one end of the main shaft is connected to the outer wall of the front shaft, the reinforcing shaft is provided with a first connecting section, the first connecting section is connected to the outer wall of the main shaft, and the first connecting section is located at one end of the main shaft away from the front shaft; A first installation shaft is plugged into the upper frame, the first installation shaft is provided with a second connecting section, and two ends of the second connecting section are connected to the main shaft and the reinforcing shaft; A second installation shaft, the second installation shaft is connected to one end of the main shaft, the two second installation shafts are located on both sides of the axis of the main shaft in a horizontal plane, the first installation shaft, the reinforcement shaft and the second installation shaft enclose a U-shaped cavity, the U-shaped cavity is used to accommodate a power device, and the power device is respectively connected to the first installation shaft and the second installation shaft; The length of the first connecting section is H1, and the length of the main axis is L1, which satisfies the following design condition: 0.2≤H1 / L1≤0.3; the length of the second connecting section is H2, and the length of the first installation axis is L2, which satisfies the following design condition: 0.1≤H2 / L2≤0.

2.

2. A straddle-type motorcycle frame according to claim 1, characterized in that: The upper frame is provided with two reinforcing plates, the reinforcing plates are connected to the main shaft, the front shaft and the first mounting shaft, and the two reinforcing plates are located on both sides of the axis of the main shaft.

3. A straddle-type motorcycle frame according to claim 2, characterized in that: The reinforcing plate is provided with a positioning opening, and the reinforcing shaft passes through the positioning opening in a vertical plane.

4. The frame of a straddle-type motorcycle according to claim 2, characterized in that: The reinforcing plate is provided with a threading ring, and the threading ring is used for threading the line.

5. The frame of a straddle-type motorcycle according to claim 1, characterized in that: The angle between the center line of the front axle and the vertical direction is A, which is designed to meet the following requirements: 25°≤A≤35°.

6. The frame of a straddle-type motorcycle according to claim 1, characterized in that: The axes of the main shaft, the front shaft, the reinforcement shaft and the first installation shaft are located in the same plane.

7. The frame of a straddle-type motorcycle according to claim 1, characterized in that: A plurality of first mounting holes are provided at one end of the first mounting shaft away from the upper frame, and a plurality of second mounting holes are provided at one end of the second mounting shaft away from the main shaft. The first mounting holes and the second mounting holes are used to connect the power equipment.

8. The frame of a straddle-type motorcycle according to claim 7, characterized in that: A reinforcing plate is provided at one end of the second mounting shaft away from the main shaft, and a plurality of the second mounting holes are located on the reinforcing plate.

9. The frame of a straddle-type motorcycle according to claim 8, characterized in that: The second mounting shaft is provided with two extension plates, the two extension plates are located on both sides of the reinforcement plate, the extension plates are provided with third mounting holes, and the third mounting holes are used for mounting the power equipment.

10. The frame of a straddle-type motorcycle according to claim 1, characterized in that: The frame of the straddle-type motorcycle also includes a lower frame, which includes the second mounting axis, a load-bearing rod and a connecting rod. The second mounting axis, the load-bearing rod and the connecting rod form a triangle. The lower frame is provided with two groups. In a horizontal plane, the two groups of the lower frames are located on both sides of the axis of the main shaft.

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