Frame of motorcycle

Abstract

The utility model discloses a frame of a motorcycle, which relates to the technical field of motorcycles and comprises a front support frame and a rear support frame, the front support frame is provided with a spindle, and the rear support frame comprises a support tube, an upper tube and a connecting tube; the two sets of rear supporting frames are symmetrically arranged about the axis of the main shaft, the supporting pipe comprises a straight section and an arc-shaped section, and the supporting pipe, the upper pipe and the connecting pipe define a triangle, so that the structural strength and the bearing capacity of the rear supporting frames are improved, and the structural strength and the stability of the frame are improved; according to the motorcycle frame, the axis of the straight section is arranged in the vertical direction, and the arc-shaped section extends to the main shaft from the straight section, so that the stability and comfort of the motorcycle frame in the running process are improved. The length of the arc-shaped section is H, the distance between the axes of the two straight sections is D, and H / D is larger than or equal to 0.7 and smaller than or equal to 0.8, so that it is guaranteed that the frame has enough structural strength, distortion and deformation of the frame are reduced, and stability and comfort in the running process of a motorcycle are guaranteed.

Description

Technical Field

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

[0002] Generally speaking, motorcycles are an ideal choice for urban commuting due to their lightness and flexibility. The frame is the main skeleton of a motorcycle, which is responsible for supporting and fixing all parts of the motorcycle, such as the engine, suspension system, wheels, seats, fuel tanks, etc. The middle part of the motorcycle frame, as the core component of the frame, plays the role of supporting the weight of the entire vehicle and carrying various parts. The middle part of the motorcycle frame needs to bear the weight of the driver, the weight of the engine, and absorb the impact and vibration during driving. The middle part of the motorcycle frame plays an important role in the structure, stability, handling, safety and comfort of the vehicle. At present, the structural strength of the middle part of the motorcycle frame is not high enough, and the stability during driving is insufficient. 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 motorcycle frame, to improve the structural strength of the motorcycle frame, and to improve the stability and comfort of the motorcycle during driving.

[0004] According to an embodiment of the utility model, a motorcycle frame is provided, comprising: a front support frame and a rear support frame, the front support frame is provided with a main shaft; the rear support frame comprises a support tube, an upper tube and a connecting tube, in a vertical plane, the support tube, the upper tube and the connecting tube form a triangle, one end of the support tube is connected to the main shaft, the rear support frame is provided with two groups, in a horizontal plane, the two groups of the rear support frames are symmetrically arranged about the axis of the main shaft, the support tube comprises a straight section and an arc section, the axis of the straight section is arranged along the vertical direction, the arc section extends from the straight section to the main shaft, in a horizontal plane, the length of the arc section is H, the distance between the axes of the two straight sections is D, and the design satisfies: 0.7≤H / D≤0.8.

[0005] The frame of a motorcycle described in the utility model has at least the following beneficial effects: the embodiment is provided with a front support frame and a rear support frame, the front support frame is provided with a main shaft, and the rear support frame includes a support tube, an upper tube and a connecting tube; the support tube, the upper tube and the connecting tube are enclosed to form a triangle, so as to improve the structural strength and bearing capacity of the rear support frame, thereby improving the structural strength and stability of the frame, and the axis of the straight section is arranged along the vertical direction, and the arc section extends from the straight section to the main shaft, so as to improve the stability and comfort of the motorcycle frame during driving. The length of the arc section is H, and the distance between the axes of the two straight sections is D. By 0.7≤H / D≤0.8, it is ensured that the frame has sufficient structural strength, reduces the distortion and deformation of the frame, and ensures the stability and comfort of the motorcycle during driving.

[0006] According to the motorcycle frame of the utility model, the support tube is provided with a first reinforcement plate, and the first reinforcement plate is located at the connection between the straight section and the arc section.

[0007] According to the motorcycle frame of the utility model, the upper tube comprises a front section, a middle section and a tail section which are connected in sequence, and in a vertical plane, there is a height difference between the tail section and the middle section.

[0008] According to the frame of a motorcycle described in the utility model, one end of the front section is connected to the arc section, and in the horizontal plane, the angle between the axis of the front section and the axis of the main shaft is A, which satisfies the following design: 8°≤A≤15°.

[0009] According to the motorcycle frame described in the utility model, a first reinforcing rod is provided between the two front sections, two ends of the first reinforcing rod are respectively connected to the two front sections, and one end of the main shaft is connected to the first reinforcing rod.

[0010] According to the motorcycle frame of the utility model, a second reinforcement rod is provided between the two tail sections, and two ends of the second reinforcement rod are respectively connected to the two tail sections.

[0011] According to a motorcycle frame described in the utility model, one end of the connecting pipe is connected to the tail section, a shock absorbing plate is provided between the connecting pipe and the tail section, a first mounting hole is provided on the shock absorbing plate, and the first mounting hole is used to install a shock absorber.

[0012] According to the motorcycle frame of the utility model, a second reinforcing plate is provided between the connecting pipe and the middle section.

[0013] According to the frame of a motorcycle described in the utility model, the rear support frame is connected to a pedal frame, and in a vertical plane, the pedal frame is V-shaped, and two ends of the pedal frame are respectively connected to the connecting pipe and the straight section.

[0014] According to the motorcycle frame of the utility model, a third reinforcing plate is provided between the pedal frame and the straight section.

[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 A top view of a frame of a motorcycle in an embodiment of the utility model;

[0018] Figure 2 It is a front view of a frame of a motorcycle in an embodiment of the utility model.

[0019] Reference numerals:

[0020] Front support frame 100; spindle 110;

[0021] rear support frame 200; support tube 210; straight section 211; arc section 212; first reinforcement plate 213; upper tube 220; front section 221; middle section 222; tail section 223; first reinforcement rod 224; second reinforcement rod 225; connecting tube 230; shock absorbing plate 240; first mounting hole 241; second reinforcement plate 250; third reinforcement plate 260;

[0022] Pedal rack 300. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Reference Figure 1 and Figure 2 The embodiment of the utility model provides a frame of a motorcycle, including a front support frame 100 and a rear support frame 200. The front support frame 100 is provided with a main shaft 110, one end of which is connected to the front of the motorcycle. The rear support frame 200 includes a support tube 210, an upper tube 220 and a connecting tube 230. In a vertical plane, the support tube 210, the upper tube 220 and the connecting tube 230 form a triangle, so that the connection between the support tube 210, the upper tube 220 and the connecting tube 230 is more stable, so as to improve the structural strength and bearing capacity of the rear support frame 200, and improve the stability and safety of the whole vehicle. The rear support frame 200 is provided with two groups, and the two groups of rear support frames 200 are symmetrically arranged about the axis of the main shaft 110, and one end of the support tube 210 is connected to the main shaft 110. The support tube 210 includes a straight section 211 and an arc section 212. The axis of the straight section 211 is arranged along the vertical direction, and the arc section 212 extends from the straight section 211 to the main shaft 110. The arc section 212 is combined with the straight section 211 to form a gradually transitioned arc structure of the support tube 210, thereby reducing vibration of the vehicle frame and improving the comfort of the driver.

[0028] Reference Figure 1 and Figure 2In some embodiments of the utility model, on a horizontal plane, the length of the arc segment 212 is H, and the distance between the axes of the two straight segments 211 is D, which satisfies 0.7≤H / D≤0.8 in design. When H / D<0.7, the length of the arc segment 212 is too small, resulting in the arc segment 212 being unable to effectively disperse and transmit the load on the frame, so that the frame is easily deformed and damaged by external forces, which is not conducive to the structural strength of the frame. The connection between the arc segment 212 and the straight segment 211 is not smooth enough, which leads to stress concentration at the connection between the arc segment 212 and the straight segment 211, reducing the overall strength of the frame. At the same time, it causes the motorcycle to easily shake and tilt when turning, reducing the stability and controllability of the frame. When H / D>0.8, the arc segment 212 is too long, which increases the production cost of the support tube 210 and increases the weight of the support tube 210, which is not conducive to the lightweight of the vehicle. Moreover, an overly long arc segment 212 causes the frame to be insensitive when turning, so that the motorcycle appears slow when turning and changing direction, which is not conducive to the stability and controllability of the motorcycle during driving. At the same time, an overly long arc segment 212 causes unreasonable stress distribution on the arc segment 212, so that some areas are subjected to excessive stress, which is not conducive to the structural strength of the frame. By setting 0.7≤H / D≤0.8, it is ensured that the frame has sufficient structural strength, reduces the distortion and deformation of the frame, and ensures the stability, comfort and controllability of the motorcycle during driving.

[0029] Reference Figure 2 In some embodiments of the utility model, the support tube 210 is provided with a first reinforcing plate 213, and the first reinforcing plate 213 is located at the connection between the straight segment 211 and the arc segment 212 to enhance the structural strength of the connection between the straight segment 211 and the arc segment 212. The first reinforcing plate 213 can disperse and transfer the stress at the connection between the straight segment 211 and the arc segment 212, thereby increasing the structural strength of the support tube 210.

[0030] Reference Figure 1 and Figure 2 In some embodiments of the utility model, the upper tube 220 includes a front section 221, a middle section 222 and a tail section 223 connected at one time, and in a vertical plane, there is a height difference between the tail section 223 and the arc section 212. By providing a height difference between the tail section 223 and the arc section 212 in a vertical plane, the frame can adapt to the unevenness of the road surface, reduce the impact of vibration and impact on the rider, and improve the stability and comfort of the motorcycle.

[0031] Reference Figure 1In some embodiments of the utility model, a section of the front section 221 is connected to the arc section 212. In the horizontal plane, the angle between the axis of the front section 221 and the axis of the main shaft 110 is A. In terms of design, it satisfies: 8°≤A≤15°. When A<8°, the motorcycle is not sensitive enough when turning, and the driver needs a larger steering angle to achieve the desired driving direction, which affects the accuracy and smoothness of driving. At the same time, it may limit the installation space of the frame and other components, increasing the complexity and difficulty of the design. It is also not conducive to the driver's posture and comfort during driving. When A>8°, it increases the risk of the motorcycle rolling when driving at high speed or turning sharply, and reduces the stability of the frame. At the same time, A is too large, resulting in the connection between the front section 221 and the arc section 212 being close to the connection between the arc section 212 and the main shaft 110, so that the connection between the front section 221 and the main shaft 110 and the surrounding area are subjected to excessive stress, which is not conducive to the structural strength of the frame. It is also not conducive to the driver's posture and comfort during driving. By setting 8°≤A≤15°, the sensitivity of the motorcycle during steering is guaranteed, the handling and stability of the motorcycle are improved, the stress distribution of the frame is optimized, and the comfort of the driver is improved.

[0032] Reference Figure 1 In some embodiments of the utility model, a first reinforcing rod 224 is provided between the two front sections 221, and the two ends of the first reinforcing rod 224 are respectively connected to the two front sections 221, and one end of the main shaft 110 is connected to the first reinforcing rod 224. The first reinforcing rod 224 is provided between the two front sections 221 to enhance the structural strength and stability between the two front sections 221, thereby enhancing the structural strength and stability of the frame. By connecting one end of the main shaft 110 to the first reinforcing rod 224, the stability of the frame during steering is improved, and the structural strength of the frame is improved.

[0033] Reference Figure 1 In some embodiments of the present invention, a second reinforcement rod 225 is provided between the two tail sections 223 , and both ends of the second reinforcement rod 225 are respectively connected to the two tail sections 223 to enhance the structural strength and stability between the two tail sections 223 .

[0034] Reference Figure 2In some embodiments of the utility model, one end of the connecting pipe 230 is connected to the tail section 223, and a shock absorbing plate 240 is provided between the connecting pipe 230 and the tail section 223. The shock absorbing plate 240 is provided with a first mounting hole 241, and the first mounting hole 241 is used to install a shock absorber. The shock absorbing plate 240 is located between the connecting pipe 230 and the tail section 223 to enhance the structural strength between the connecting pipe 230 and the tail section 223, and enhance the structural strength of the frame. The first mounting hole 241 is located on the shock absorbing plate 240 to avoid directly opening a hole on the connecting pipe 230 and the tail section 223, so as to avoid the opening of the hole affecting the structural strength of the connecting pipe 230 and the tail section 223.

[0035] Reference Figure 2 In some embodiments of the present invention, a second reinforcing plate 250 is provided between the connecting pipe 230 and the middle section 222 to enhance the structural strength between the connecting pipe 230 and the middle section 222, thereby enhancing the structural strength of the frame.

[0036] Reference Figure 2 In some embodiments of the utility model, the rear support frame 200 is connected to the pedal frame 300. In the vertical plane, the pedal frame 300 is V-shaped, and the two ends of the pedal frame 300 are respectively connected to the connecting pipe 230 and the straight section 211. By making the pedal frame 300 V-shaped in the vertical plane, the structural strength of the pedal frame 300 is improved, the structural strength between the connecting pipe 230 and the straight section 211 is enhanced, and the structural strength of the frame is improved.

[0037] Reference Figure 2 In some embodiments of the present invention, a third reinforcing plate 260 is provided between the pedal frame 300 and the straight section 211 to enhance the structural strength between the pedal frame 300 and the straight section 211, thereby enhancing the structural strength of the frame.

[0038] 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.

[0039] 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 motorcycle frame, characterized in that: include: A front support frame provided with a main shaft; A rear support frame comprises a support tube, an upper tube and a connecting tube. In a vertical plane, the support tube, the upper tube and the connecting tube form a triangle. One end of the support tube is connected to the main shaft. Two groups of rear support frames are provided. In a horizontal plane, the two groups of rear support frames are symmetrically arranged about the axis of the main shaft. The support tube comprises a straight section and an arc section. The axis of the straight section is arranged along the vertical direction. The arc section extends from the straight section to the main shaft. In a horizontal plane, the length of the arc section is H, and the distance between the axes of the two straight sections is D. The design satisfies: 0.7≤H / D≤0.

8.

2. A motorcycle frame according to claim 1, characterized in that: The support tube is provided with a first reinforcement plate, and the first reinforcement plate is located at the connection between the straight section and the arc section.

3. A motorcycle frame according to claim 1, characterized in that: The upper tube comprises a front section, a middle section and a tail section which are connected in sequence. In a vertical plane, there is a height difference between the tail section and the middle section.

4. A motorcycle frame according to claim 3, characterized in that: One end of the front section is connected to the arc section. In the horizontal plane, the angle between the axis of the front section and the axis of the main shaft is A, which satisfies the following condition in design: 8°≤A≤15°.

5. The motorcycle frame according to claim 3, characterized in that: A first reinforcing rod is provided between the two front sections, two ends of the first reinforcing rod are respectively connected to the two front sections, and one end of the main shaft is connected to the first reinforcing rod.

6. A motorcycle frame according to claim 3, characterized in that: A second reinforcement rod is provided between the two tail sections, and two ends of the second reinforcement rod are respectively connected to the two tail sections.

7. The motorcycle frame according to claim 3, characterized in that: One end of the connecting pipe is connected to the tail section, a shock absorbing plate is provided between the connecting pipe and the tail section, a first mounting hole is provided on the shock absorbing plate, and the first mounting hole is used for mounting a shock absorber.

8. The motorcycle frame according to claim 6, characterized in that: A second reinforcing plate is provided between the connecting pipe and the middle section.

9. The motorcycle frame according to claim 1, characterized in that: The rear support frame is connected to a pedal frame. In a vertical plane, the pedal frame is V-shaped, and two ends of the pedal frame are respectively connected to the connecting pipe and the straight section.

10. A motorcycle frame according to claim 9, characterized in that: A third reinforcing plate is provided between the pedal frame and the straight section.

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