A vehicle body structure of a scooter

Abstract

The application discloses a scooter body structure, comprising: a vehicle body, a top part of which is provided with a footboard; a chassis, comprising an upper connecting frame, a lower connecting frame and a U-shaped pipe, the upper connecting frame and the lower connecting frame are connected with each other and form a containing area, the vehicle body is arranged in the containing area, the U-shaped pipe is arranged at the front part of the chassis, two branch pipes of the U-shaped pipe are connected with the upper connecting frame and the lower connecting frame respectively, the upper connecting frame and the lower connecting frame have bending parts, so that the upper connecting frame and the lower connecting frame are in an overall arc shape; a front wheel frame is arranged at the two sides of the U-shaped pipe; and a rear wheel frame is arranged at the rear part of the chassis.

Description

Technical Field

[0001] This application relates to the field of mobility scooter technology, and in particular to a vehicle body structure for a mobility scooter. Background Technology

[0002] As an excellent short-distance transportation tool, the scooter, with its advantages of flexibility and lightness, has become an important choice for urban commuting, campus shuttles, and daily short-distance travel. For any transportation tool, shock absorption is crucial. Traditional solutions for shock absorption performance often rely on tire pressure or simple spring shock absorbers for cushioning, with the main body structure itself lacking shock absorption design. When the vehicle travels over speed bumps, gravel roads, or other rough terrain, the impact force is directly transmitted to the vehicle body through the rigid frame. This not only reduces the user's riding comfort but may also cause internal components to loosen, shortening the scooter's lifespan. Therefore, solving these problems is the purpose of this application.

[0003] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0004] Based on this, this application provides a vehicle body structure for a personal mobility vehicle to solve one of the aforementioned technical problems.

[0005] The technical solution adopted by this application to solve its technical problem is a vehicle body structure, including: a vehicle body with a foot pedal on the top; a chassis including an upper connecting frame, a lower connecting frame, and a U-shaped tube, wherein the upper connecting frame and the lower connecting frame are connected to each other and form a receiving area, the vehicle body is placed in the receiving area, the U-shaped tube is located at the front of the chassis, and the two branches of the U-shaped tube are respectively connected to the upper connecting frame and the lower connecting frame, the upper connecting frame and the lower connecting frame have bent portions, so that the upper connecting frame and the lower connecting frame are bow-shaped as a whole; a front wheel frame is located on both sides of the U-shaped tube; and a rear wheel frame is located at the rear of the chassis.

[0006] In some embodiments, an upper crossbar is provided between the two sides of the upper connecting frame in the width direction, and a lower crossbar and a lower cross plate are provided between the two sides of the lower connecting frame in the width direction. The two branch pipes of the U-shaped tube are respectively connected to the upper crossbar and the lower crossbar.

[0007] In some embodiments, the width of the lower connecting frame is smaller than the width of the upper connecting frame, and both ends of the lower connecting frame are connected to the upper crossbar.

[0008] In some embodiments, wavy limiting tubes are provided on both sides of the lower connecting frame in the width direction, and the limiting tubes extend along the length direction of the lower connecting frame and are located between the upper connecting frame and the lower connecting frame.

[0009] In some embodiments, a vertical pipe is provided between the branch pipe of the U-shaped tube and the upper connecting frame, and the steering mechanism of the mobility scooter is installed on the vertical pipe.

[0010] In some embodiments, the bending angle range of the two bent portions of the upper connecting frame is 145-155°.

[0011] In some embodiments, of the two sets of bent portions of the lower connecting frame, the bending angle near the front is approximately 90 degrees, and the bending angle near the rear ranges from 110 to 120 degrees.

[0012] In some embodiments, the base frame is made of a metal material with predetermined elasticity and is capable of elastic deformation to cushion impacts.

[0013] The beneficial effect of this application is that, through the bow-shaped design of the upper and lower connecting frames, when a vehicle passes over uneven road sections, the large force generated by the vehicle will bring a greater impact. Utilizing the elastic principle of the bow, and in conjunction with the force borne by the U-shaped tube, the impact force is effectively buffered under the elastic effect of the bow. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of this application.

[0016] Figure 2 This is a schematic diagram of the base frame installation state of this application.

[0017] Figure 3 This is a schematic diagram of the base frame structure of this application.

[0018] The following are the symbols and their meanings: 1. Vehicle body; 11. Foot pedal; 2. Base frame; 21. Upper connecting frame; 211. Upper crossbar; 22. Lower connecting frame; 221. Lower crossbar; 222. Lower cross plate; 23. U-shaped tube; 24. Limiting tube; 25. Vertical tube; 3. Front wheel frame; 4. Rear wheel frame. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0020] In the embodiments of this application, please refer to Figure 1-3 As shown, this application provides a vehicle body structure for a personal mobility vehicle, mainly including: a vehicle body 1 with a foot pedal 11 on the top; a base frame 2, including an upper connecting frame 21, a lower connecting frame 22, and a U-shaped tube 23, wherein the upper connecting frame 21 and the lower connecting frame 22 are connected to each other and form a receiving area, the vehicle body 1 is placed in the receiving area, the U-shaped tube 23 is located at the front of the base frame 2, and the two branches of the U-shaped tube 23 are respectively connected to the upper connecting frame 21 and the lower connecting frame 22, the upper connecting frame 21 and the lower connecting frame 22 have bent portions, so that the upper connecting frame 21 and the lower connecting frame 22 are generally bow-shaped; a front wheel frame 3 is located on both sides of the U-shaped tube 23; and a rear wheel frame 4 is located at the rear of the base frame 2.

[0021] Specifically, by using two bow-shaped connecting frames, the impact force generated during vehicle movement is buffered. If the bow-shaped connecting frames have a certain degree of elasticity, the buffering effect is optimal.

[0022] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0023] Specifically, the upper connecting frame 21 has an upper crossbar 211 between its two sides in the width direction, and the lower connecting frame 22 has a lower crossbar 221 and a lower crossbar 222 between its two sides in the width direction. The two branch pipes of the U-shaped tube 23 are respectively connected to the upper crossbar 211 and the lower crossbar 221. The presence of the upper crossbar 211 and the lower crossbar 221 can improve the lateral compressive strength of the upper and lower connecting frames 22, and at the same time optimize the connection distribution between the upper and lower connecting frames 22. The bottom end of the branch pipe is welded and fixed to both ends of the lower crossbar 221 to form a rectangular frame structure at the front of the base frame 2, which has stronger impact resistance than simple branch pipe welding.

[0024] To prevent the vehicle body 1 from swaying and to ensure the stability of the chassis 2, the width of the lower connecting frame 22 is smaller than the width of the upper connecting frame 21. The two ends of the lower connecting frame 22 are connected to the upper crossbar 211, so that the chassis 2 has an overall trapezoidal structure that is "wider at the top and narrower at the bottom", which makes it convenient to place the vehicle body 1 of the corresponding shape and limit its swaying.

[0025] Reference Figure 2 As shown, wave-shaped limiting tubes 24 are provided on both sides of the lower connecting frame 22 in the width direction. The limiting tubes 24 extend along the length direction of the lower connecting frame 22 and are located between the upper connecting frame 21 and the lower connecting frame 22. The height difference between the peaks and troughs of the wave shape is the height difference between the upper and lower connecting frames 22, which provides a layer of protection for the outside of the base frame 2 and can limit the shaking of the vehicle body 1.

[0026] Specifically, a vertical pipe 25 is also provided between the branch pipe of the U-shaped pipe 23 and the upper connecting frame 21. The vertical pipe 25 is used to install the steering mechanism of the mobility scooter. The upper part of the vertical pipe 25 is used to connect the handlebar in the steering mechanism of the mobility scooter, and the steering of the front wheel assembly is controlled by the handlebar. At the same time, the vertical pipe 25, the upper branch pipe of the U-shaped pipe 23, the upper connecting frame 21, and the horizontal pipe form a triangular support, which effectively increases the support strength of the vertical pipe 25.

[0027] Preferably, the upper connecting frame 21 is bow-shaped and includes two sets of symmetrical bent sections, with the bending angle of each of the two bent sections of the upper connecting frame 21 ranging from 145° to 155°.

[0028] Specifically, the lower connecting frame 22 is connected to the two sets of bent portions of the lower connecting frame 22. The bending angle near the front is about 90 degrees. This angle allows the front of the lower connecting frame 22 to form a vertical support with the U-shaped tube, improving the impact resistance of the front of the base frame 2. The bending angle near the rear is in the range of 110-120°. This angle makes the lower connecting frame 22 roughly bow-shaped and can correspond to the bending angle of the upper connecting frame 21.

[0029] The base frame 2 is made of a metal material with predetermined elasticity. The upper connecting frame 21 and the lower connecting frame 22 are made of spring steel, high carbon steel, or aluminum alloy, and are capable of elastic deformation to buffer impacts. They require an elastic deformation range of 0.5%-3% under stress. When a vehicle travels on uneven road surfaces, the large force generated by the vehicle results in a significant impact. The base frame 2, utilizing a bow-like elastic principle, in conjunction with the U-shaped tube 23, greatly buffers the impact force on the riser 25 under the action of the bow-shaped elasticity.

[0030] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle body structure, characterized in that, include: The vehicle body has foot pedals installed on the top; The underframe includes an upper connecting frame, a lower connecting frame, and a U-shaped tube. The upper connecting frame and the lower connecting frame are connected to each other and form a receiving area. The vehicle body is placed in the receiving area. The U-shaped tube is located at the front of the underframe. The two branches of the U-shaped tube are respectively connected to the upper connecting frame and the lower connecting frame. The upper connecting frame and the lower connecting frame have bent portions, so that the upper connecting frame and the lower connecting frame are bow-shaped as a whole. The front wheel bracket is located on both sides of the U-shaped tube; The rear wheel bracket is located at the rear of the chassis.

2. The vehicle body structure of a personal mobility vehicle according to claim 1, characterized in that, The upper connecting frame is provided with an upper crossbar between its two sides in the width direction, and the lower connecting frame is provided with a lower crossbar and a lower cross plate between its two sides in the width direction. The two branch pipes of the U-shaped tube are respectively connected to the upper crossbar and the lower crossbar.

3. The vehicle body structure of a personal mobility vehicle according to claim 2, characterized in that, The width of the lower connecting frame is smaller than the width of the upper connecting frame, and both ends of the lower connecting frame are connected to the upper crossbar.

4. The vehicle body structure of a personal mobility vehicle according to claim 1, characterized in that, The lower connecting frame is provided with wave-shaped limiting tubes on both sides in the width direction. The limiting tubes extend along the length direction of the lower connecting frame and are located between the upper connecting frame and the lower connecting frame.

5. The vehicle body structure of a personal mobility vehicle according to claim 1, characterized in that, A vertical pipe is also provided between the branch pipe of the U-shaped tube and the upper connecting frame, and the steering mechanism of the mobility scooter is installed on the vertical pipe.

6. The vehicle body structure of a personal mobility vehicle according to claim 1, characterized in that, The bending angle range of the two bending parts of the upper connecting frame is 145-155°.

7. The vehicle body structure of a personal mobility vehicle according to claim 1, characterized in that, Of the two sets of bending sections of the lower connecting frame, the bending angle near the front is 90 degrees, and the bending angle near the rear ranges from 110 to 120 degrees.

8. The vehicle body structure of a personal mobility vehicle according to claim 1, characterized in that, The base frame is made of a metal material with predetermined elasticity and is capable of elastic deformation to cushion impacts.

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