Driving wheel assembly and scooter

Abstract

The driving wheel assembly comprises a supporting arm arranged at one end of a chassis framework and hinged to the chassis framework, driving wheels arranged at one end of the supporting arm and a buffering connecting rod with one end hinged to the chassis framework and the other end hinged to the supporting arm, and at least one driving wheel is provided with an electric motor. The electric motor applies torque to the driving wheel; the hinge point of the supporting arm and the chassis framework is a first hinge point, the hinge point of the buffering connecting rod and the chassis framework is a second hinge point, the hinge point of the buffering connecting rod and the supporting arm is a third hinge point, and the first hinge point, the second hinge point and the third hinge point are arranged in a triangular mode. The buffering supporting force generated by the buffering connecting rod to the supporting arm is more stable, and the stability of the supporting arm in the damping and buffering process is improved.

Description

Technical Field

[0001] This application relates to a drive wheel assembly and a personal mobility vehicle. Background Technology

[0002] A personal mobility vehicle mainly consists of a chassis frame and wheels mounted on the chassis frame. The wheels are equipped with electric motors and battery packs. During operation, shock absorption is crucial. Therefore, a shock-absorbing assembly is installed between the wheels and the chassis frame. Chinese Patent Publication No. CN215323139U discloses a shock-absorbing assembly for a personal mobility vehicle and a personal mobility vehicle having the same assembly. The shock-absorbing assembly includes: a fork, a shock absorber seat, a shock absorber guide rod, and a shock absorber elastic element. The first end of the fork is adapted to connect to the wheel of the personal mobility vehicle, and the second end of the fork is adapted to be pivotally connected to the frame of the personal mobility vehicle. The shock absorber seat is adapted to be pivotally connected to the frame and has a guide hole. The first end of the shock absorber guide rod is pivotally connected to the fork, and the second end of the shock absorber guide rod passes through and extends out of the guide hole. The shock absorber elastic element is disposed between the second end of the shock absorber guide rod and the shock absorber seat.

[0003] Through understanding the relevant technologies, it was found that although some shock absorption components on mobility scooters have shock absorption functions, their actual shock absorption stability needs to be improved. Utility Model Content

[0004] The present invention aims to provide a drive wheel assembly and a personal transportation vehicle to solve the above-mentioned technical problems.

[0005] In view of this, the present invention provides a drive wheel assembly, comprising:

[0006] A drive wheel assembly, comprising:

[0007] The support arm is located at one end of the chassis frame and hinged to the chassis frame.

[0008] The drive wheel is located at one end of the support arm;

[0009] An electric motor configured to apply torque to at least one drive wheel;

[0010] The buffer link is hinged at one end to the chassis frame and at the other end to the support arm.

[0011] The hinge point between the support arm and the chassis frame is the first hinge point, the hinge point between the buffer link and the chassis frame is the second hinge point, and the hinge point between the buffer link and the support arm is the third hinge point. The first, second, and third hinge points are arranged in a triangular pattern.

[0012] With the above technical solution, after the three hinge points are arranged in a triangle, when the support arm shakes up and down relative to the plane where the chassis frame is located, the buffer support force generated by the buffer link on the support arm will be more stable, which improves the stability of the support arm in the shock absorption and buffering process.

[0013] Furthermore, one end of the chassis frame is equipped with a detachable clearance frame, which is part of the chassis frame, and one end of the buffer link is hinged to the clearance frame.

[0014] Through the above technical solution, the avoidance frame provides a hinge point for the buffer link. Under normal circumstances, the chassis frame and the avoidance frame can be integrally formed. In some embodiments, considering the function of the avoidance frame itself, in order to facilitate the disassembly and assembly of the avoidance frame, the avoidance frame can be installed on the chassis frame in a detachable manner. Since the design requires the first hinge point, the second hinge point and the third hinge point to be arranged in a triangular pattern, the buffer link is generally installed at an angle on one side of the chassis frame. The first hinge point and the third hinge point are generally in the same plane. The avoidance frame cleverly provides the second hinge point formed by the hinge between the chassis frame and the buffer link, so that the first hinge point, the second hinge point and the third hinge point are arranged in a triangular pattern.

[0015] Furthermore, a buffer spring and a fastening sleeve are fitted on the buffer link. A support block is provided at one end of the buffer link. One end of the buffer spring abuts against the support block, and the other end abuts against the fastening sleeve. The fastening sleeve can move on the buffer link to control the compression force of the buffer spring.

[0016] When the drive wheels hit obstacles on the ground during driving, the support arm vibrates up and down relative to the plane of the chassis frame. After the buffer spring is installed, it can play a role in shock absorption of the support arm.

[0017] Specifically, the fastening sleeve is threadedly connected to the buffer connecting rod.

[0018] By using the above technical solution, the compression of the buffer spring can be controlled after the fastening sleeve rotates on the buffer connecting rod, thereby achieving the purpose of adjustable shock absorption strength of the buffer connecting rod.

[0019] Furthermore, the support arm is equipped with a mounting slot corresponding to the electric motor.

[0020] Through the above technical solution, the placement slot can support the electric motor during the up-and-down vibration of the support arm, providing significant support and preventing the electric motor from becoming loose during the up-and-down vibration.

[0021] Furthermore, there are two support arms, which are symmetrically installed on both sides of the chassis frame.

[0022] Furthermore, a reinforcing rib is provided on one side of the support arm.

[0023] Furthermore, the installation direction of the buffer link is at an angle relative to the mounting surface where the support arm is located.

[0024] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. The hinge point between the support arm and the chassis frame in this application is the first hinge point, the hinge point between the buffer link and the chassis frame is the second hinge point, and the hinge point between the buffer link and the support arm is the third hinge point. The first hinge point, the second hinge point, and the third hinge point are arranged in a triangular pattern. When the support arm vibrates up and down relative to the plane where the chassis frame is located, the buffer support force generated by the buffer link on the support arm will be more stable, thereby improving the stability of the support arm in the shock absorption and buffering process.

[0025] 2. The buffer link of this application is fitted with a buffer spring and a fastening sleeve. One end of the buffer link is provided with a support block. One end of the buffer spring abuts against the support block and the other end abuts against the fastening sleeve. The fastening sleeve can move on the buffer link to control the compression force of the buffer spring. After the fastening sleeve rotates on the buffer link, it can control the compression amount of the buffer spring, thereby achieving the purpose of adjustable shock absorption strength of the buffer link.

[0026] In addition, this application provides a personal transportation vehicle, including the aforementioned drive wheel assembly.

[0027] Compared with the prior art, the beneficial technical effects of the personal mobility vehicle with drive wheel assembly provided in this application are as described above, and will not be repeated here. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the drive wheel assembly in specific embodiment 1 of this application;

[0030] Figure 2 This is a structural schematic diagram of the drive wheel assembly from another angle in a specific embodiment 1 of this application;

[0031] Figure 3 This is a top view of the drive wheel assembly in specific embodiment 1 of this application;

[0032] Figure 4 for Figure 3 Schematic diagram of the cross section along line AA;

[0033] Figure 5 This is a schematic diagram of the personal transportation vehicle in Embodiment 2 of this application.

[0034] Explanation of reference numerals in the attached drawings: 100, drive wheel assembly; 10, chassis frame; 11, support arm; 12, drive wheel; 13, buffer link; 14, electric motor; 15, first hinge point; 16, second hinge point; 17, third hinge point; 18, obstacle avoidance frame; 19, buffer spring; 20, fastening sleeve; 21, support block; 110, mounting slot; 111, reinforcing rib; 200, personal transportation vehicle. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] This application is described below with reference to the accompanying drawings and specific embodiments:

[0037] Example 1

[0038] Reference Figure 1 , Figure 2 A drive wheel assembly 100 includes a support arm 11 disposed at one end of a chassis frame 10 and hinged to the chassis frame 10, a drive wheel 12 disposed at one end of the support arm 11, and a buffer link 13 hinged at one end to the chassis frame 10 and at the other end to the support arm 11, wherein at least one drive wheel 12 is equipped with an electric motor 14, and the electric motor 14 applies torque to the drive wheel 12.

[0039] The installation direction of the buffer link 13 is inclined relative to the installation surface of the support arm 11. The hinge point between the support arm 11 and the chassis frame 10 is the first hinge point 15, the hinge point between the buffer link 13 and the chassis frame 10 is the second hinge point 16, and the hinge point between the buffer link 13 and the support arm 11 is the third hinge point 17. The first hinge point 15, the second hinge point 16, and the third hinge point 17 are arranged in a triangle. After the three hinge points are arranged in a triangle, when the support arm 11 shakes up and down relative to the plane of the chassis frame 10, the buffer support force generated by the buffer link 13 on the support arm 11 will be more stable, which improves the stability of the support arm 11 in the shock absorption process.

[0040] In some embodiments, the support arm 11 is provided with a mounting slot 110 corresponding to the electric motor 14. During the up-and-down shaking process, the mounting slot 110 can support the electric motor 14, providing significant support to the electric motor 14 and preventing the electric motor 14 from becoming loose during the up-and-down vibration.

[0041] Furthermore, refer to Figure 3 , Figure 4 One end of the chassis frame 10 is provided with a detachable clearance frame 18, which is part of the chassis frame 10. One end of the buffer link 13 is hinged to the clearance frame 18, and the clearance frame 18 provides a hinge point for the buffer link 13. Under normal circumstances, the chassis frame 10 and the clearance frame 18 can be integrally formed. In some embodiments, considering the function of the clearance frame 18 itself, and to facilitate the disassembly and assembly of the clearance frame 18, the clearance frame 18 can be detachably installed on the chassis frame 10. On the 0, since the design requires the first hinge point 15, the second hinge point 16, and the third hinge point 17 to be arranged in a triangular pattern, the buffer link 13 is generally installed at an angle on one side of the chassis frame 10. The first hinge point 15 and the third hinge point 17 are generally in the same plane. The avoidance frame 18 cleverly provides the second hinge point 16 formed by the hinge between the chassis frame 10 and the buffer link 13, so that the first hinge point 15, the second hinge point 16, and the third hinge point 17 are arranged in a triangular pattern.

[0042] Furthermore, in order to improve the shock absorption effect of the buffer link 13, a buffer spring 19 and a fastening sleeve 20 are sleeved on the buffer link 13. A support block 21 is provided at one end of the buffer link 13. One end of the buffer spring 19 abuts against the support block 21, and the other end abuts against the fastening sleeve 20. The buffer link 13 is a telescopic rod, and the fastening sleeve 20 can move on the buffer link 13 to control the compression force of the buffer spring 19.

[0043] When the drive wheel 12 hits an obstacle on the ground during driving, the support arm 11 vibrates up and down relative to the plane where the chassis frame 10 is located. After the buffer spring 19 is installed, it can play a role in shock absorption for the support arm 11.

[0044] Specifically, the fastening sleeve 20 is threadedly connected to the buffer link 13. After the fastening sleeve 20 rotates on the buffer link 13, it can control the compression of the buffer spring 19, thereby achieving the purpose of adjustable shock absorption strength of the buffer link 13.

[0045] In this embodiment, there are two support arms 11, which are symmetrically installed on both sides of the chassis frame 10. One side of each support arm 11 is provided with a reinforcing rib 111, which can improve the overall strength of the support arm 11.

[0046] Example 2

[0047] Based on the same technical concept, this application provides a personal transportation vehicle 200. Please refer to [link / reference]. Figure 5 Similar to existing personal mobility vehicles, the personal mobility vehicle 200 in this embodiment includes the drive wheel assembly 100 in the above embodiment 1. When the support arm 11 of the personal mobility vehicle 200 with the drive wheel assembly 100 installed shakes up and down relative to the plane where the chassis frame 10 is located, the buffer support force generated by the buffer link 13 on the support arm 11 will be more stable, which improves the stability of the support arm 11 in the shock absorption process. Moreover, the compression of the buffer spring 19 can be controlled, thereby achieving the purpose of adjustable shock absorption intensity of the buffer link 13.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drive wheel assembly, characterized in that, include: A support arm (11) is set at one end of the chassis frame (10) and hinged to the chassis frame (10); A drive wheel (12) is disposed at one end of the support arm (11); An electric motor (14) configured to apply torque to at least one of the drive wheels (12); The buffer link (13) is hinged at one end to the chassis frame (10) and at the other end to the support arm (11); The hinge point between the support arm (11) and the chassis frame (10) is the first hinge point (15), the hinge point between the buffer link (13) and the chassis frame (10) is the second hinge point (16), and the hinge point between the buffer link (13) and the support arm (11) is the third hinge point (17). The first hinge point (15), the second hinge point (16), and the third hinge point (17) are arranged in a triangular pattern.

2. The drive wheel (12) assembly according to claim 1, characterized in that, One end of the chassis frame (10) is provided with a detachable clearance frame (18), which is constructed as part of the chassis frame (10).

3. The drive wheel (12) assembly according to claim 2, characterized in that, One end of the buffer link (13) is hinged to the avoidance frame (18).

4. The drive wheel (12) assembly according to claim 1 or 3, characterized in that, A buffer spring (19) and a fastening sleeve (20) are fitted on the buffer link (13). A support block (21) is provided at one end of the buffer link (13). One end of the buffer spring (19) abuts against the support block (21), and the other end abuts against the fastening sleeve (20). The fastening sleeve (20) can move on the buffer link (13) to control the compression force of the buffer spring (19).

5. The drive wheel (12) assembly according to claim 1, characterized in that, The support arm (11) is provided with a mounting slot (110) corresponding to the electric motor (14).

6. The drive wheel (12) assembly according to claim 1, characterized in that, The number of the support arms (11) is two, and the two support arms (11) are symmetrically installed on both sides of the chassis frame (10).

7. The drive wheel (12) assembly according to claim 4, characterized in that, The fastening sleeve (20) is threadedly connected to the buffer connecting rod (13).

8. The drive wheel (12) assembly according to claim 4, characterized in that, The support arm (11) is provided with a reinforcing rib (111) on one side.

9. The drive wheel (12) assembly according to claim 4, characterized in that, The installation direction of the buffer link (13) is inclined relative to the mounting surface where the support arm (11) is located.

10. A personal transportation vehicle, characterized in that, Includes the drive wheel assembly according to any one of claims 1-9.

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