A support wheel assembly and mobility vehicle

Abstract

The application relates to a support wheel assembly and a walking vehicle, wherein the support wheel assembly comprises a support arm arranged at one end of a chassis framework and fixedly connected with the chassis framework, a connecting arm fixed at the end of the support arm, a suspension arm hinged with the connecting arm, and a support wheel rotationally connected with the end of the suspension arm, wherein a buffer connecting rod is arranged between the connecting arm and the suspension arm, one end of the buffer connecting rod is hinged with the connecting arm, and the other end is hinged with the suspension arm; the hinged point of the suspension arm and the connecting arm is a first hinged point, the hinged point of the buffer connecting rod and the connecting arm is a second hinged point, the hinged point of the buffer connecting rod and the suspension arm is a third hinged point, the first hinged point, the second hinged point and the third hinged point are arranged in a triangular mode, and after the three hinged points are arranged in a triangular mode, the buffer supporting force generated by the buffer connecting rod on the suspension arm is more stable when the suspension arm shakes up and down relative to the connecting arm, and the stability of the suspension arm in the damping and buffering process is improved.

Description

Technical Field

[0001] This application relates to a support 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 support wheel assembly and a personal mobility vehicle to solve the above-mentioned technical problems.

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

[0006] A support wheel assembly, comprising:

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

[0008] The connecting arm is fixedly mounted on the support arm;

[0009] The cantilever arm is hinged at one end to the connecting arm and rotatably connected to the support wheel at the other end.

[0010] The buffer link is hinged at one end to the connecting arm and at the other end to the suspension arm;

[0011] The hinge point between the suspension arm and the connecting arm is the first hinge point, the hinge point between the buffer link and the connecting arm is the second hinge point, and the hinge point between the buffer link and the suspension 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 suspension arm shakes up and down relative to the connecting arm, the buffer support force generated by the buffer link on the suspension arm will be more stable, thus improving the stability of the suspension arm during the shock absorption process.

[0013] Furthermore, the buffer link is a telescopic link, with a buffer spring and a fastening sleeve fitted on it. 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.

[0014] With the above technical solution, when the support wheel hits a ground obstacle during driving, the suspension arm will shake. After the buffer spring is installed, it can play a shock absorption role for the suspension arm. Since the buffer link is a telescopic link, the buffer link will change length due to the impact force during the shaking process. During the telescopic process, the elastic force generated by the buffer spring will improve the shock absorption effect of the buffer link on the suspension arm.

[0015] Furthermore, the fastening sleeve can move on the buffer linkage to control the compression force of the buffer spring.

[0016] Preferably, the fastening sleeve is threadedly connected to the buffer connecting rod.

[0017] 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.

[0018] Furthermore, one of the support arm and the connecting arm is provided with a snap-fit ​​flange, and the other of the support arm and the connecting arm is provided with a snap-fit ​​groove that is adapted to the snap-fit ​​flange. The support arm and the connecting arm are snapped together by the snap-fit ​​flange and the snap-fit ​​groove.

[0019] Furthermore, the extension direction of the engaging flange intersects with the vibration direction of the support wheel.

[0020] Furthermore, the end of the support arm is provided with a fixing plate, which is fixedly connected to the connecting arm by fasteners (screws).

[0021] Through the above technical solution, for easy assembly and disassembly, the support arm and connecting arm are connected in a detachable manner. During connection, the fixing plate at the end of the support arm is connected to the connecting arm through a fastener. To prevent loosening of the connection between the support arm and the connecting arm during vibration, the splicing position of the support arm and the connecting arm is engaged by a snap-fit ​​flange and a slot. This ensures the firmness and stability of the assembly of the support arm and the connecting arm. In the design, the extension direction of the snap-fit ​​flange intersects with the vibration direction of the support wheel, preferably at an angle of 90 degrees. The advantage of this design is that when the support wheel drives the connecting arm to vibrate up and down, the support arm and the connecting arm are directly driven to bear the force through the snap-fit ​​flange. This can greatly reduce the load borne by the fastener on the fixing plate and avoid the problem of loosening at the contact position between the fixing plate and the connecting arm.

[0022] Furthermore, there are two support arms, which are symmetrically installed on both sides of the chassis frame.

[0023] Compared with the prior art, the beneficial technical effects of the present utility model are as follows: 1. The hinge point between the suspension arm and the connecting arm in this application is the first hinge point, the hinge point between the buffer link and the connecting arm is the second hinge point, and the hinge point between the buffer link and the suspension 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. After the three hinge points are arranged in a triangular pattern, when the suspension arm shakes up and down relative to the connecting arm, the buffer support force generated by the buffer link on the suspension arm will be more stable, thereby improving the stability of the suspension arm in the shock absorption and buffering process.

[0024] 2. The buffer link of this application is a telescopic link. A buffer spring and a fastening sleeve are sleeved 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. 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.

[0025] 3. In this application, the support arm and the connecting arm are fixedly connected by fasteners, and they are also engaged by a snap-fit ​​flange and a snap-fit ​​groove. The extension direction of the snap-fit ​​flange intersects with the vibration direction of the support wheel. When the support wheel drives the connecting arm to vibrate up and down, the support arm and the connecting arm are directly driven to bear the force through the snap-fit ​​flange. This can greatly reduce the load borne by the fasteners on the fixed plate and avoid the problem of loosening at the contact position between the fixed plate and the connecting arm.

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

[0027] Compared with the prior art, the beneficial technical effects of the personal mobility vehicle with support 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 support wheel assembly in specific embodiment 1 of this application;

[0030] Figure 2 This is a partial structural schematic diagram of the support wheel assembly in specific embodiment 1 of this application;

[0031] Figure 3 This is a top view of the support 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, support wheel assembly; 10, chassis frame; 11, support arm; 12, connecting arm; 13, suspension arm; 14, support wheel; 15, buffer link; 16, first hinge point; 17, second hinge point; 18, third hinge point; 19, buffer spring; 20, fastening sleeve; 21, support block; 22, fixing plate; 23, engaging flange; 24, slot; 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 2A support wheel assembly 100 includes a support arm 11 disposed at one end of a chassis frame 10 and fixedly connected to the chassis frame 10, a connecting arm 12 fixed to the end of the support arm 11, a suspension arm 13 hinged to the connecting arm 12, and a support wheel 14 rotatably connected to the end of the suspension arm 13. A buffer link 15 is provided between the connecting arm 12 and the suspension arm 13. One end of the buffer link 15 is hinged to the connecting arm 12, and the other end is hinged to the suspension arm 13. Since the support wheel 14 is generally symmetrically installed on both sides of the chassis frame 10, there are two support arms 11, which are symmetrically installed on both sides of the chassis frame 10.

[0039] In this embodiment, refer to Figure 3 , Figure 4 The hinge point between the suspension arm 13 and the connecting arm 12 is the first hinge point 16, the hinge point between the buffer link 15 and the connecting arm 12 is the second hinge point 17, and the hinge point between the buffer link 15 and the suspension arm 13 is the third hinge point 18. The first hinge point 16, the second hinge point 17, and the third hinge point 18 are arranged in a triangular pattern. After the three hinge points are arranged in a triangular pattern, when the suspension arm 13 shakes up and down relative to the connecting arm 12, the buffer support force generated by the buffer link 15 on the suspension arm 13 will be more stable, which improves the stability of the suspension arm 13 in the shock absorption and buffering process.

[0040] In some embodiments, the buffer link 15 is a telescopic link, and a buffer spring 19 and a fastening sleeve 20 are sleeved on the buffer link 15. One end of the buffer link 15 is provided with a support block 21. One end of the buffer spring 19 abuts against the support block 21, and the other end abuts against the fastening sleeve 20. When the support wheel 14 hits a ground obstacle during driving, the suspension arm 13 will shake. After the buffer spring 19 is installed, it can play a shock-absorbing role for the suspension arm 13. Since the buffer link 15 is a telescopic link, during the shaking process of the suspension arm 13, the buffer link 15 subjected to the impact force will undergo length extension and retraction changes. During the extension and retraction changes of the buffer link 15, the elastic force generated by the buffer spring 19 will improve the shock absorption effect of the buffer link 15 on the suspension arm 13.

[0041] Furthermore, the fastening sleeve 20 can move on the buffer link 15 to control the compression force of the buffer spring 19. Preferably, the fastening sleeve 20 is threadedly connected to the buffer link 15. After the fastening sleeve 20 rotates on the buffer link 15, it can control the compression of the buffer spring 19, thereby achieving the purpose of adjustable shock absorption strength of the buffer link 15.

[0042] Furthermore, refer to Figure 1 , Figure 2The end of the support arm 11 is provided with a fixing plate 22. The fixing plate 22 is fixedly connected to the connecting arm 12 by a fastener (screw). Moreover, one of the support arm 11 and the connecting arm 12 is provided with a snap-fit ​​flange 23, and the other of the support arm 11 and the connecting arm 12 is provided with a slot 24 that is adapted to the snap-fit ​​flange 23. The support arm 11 and the connecting arm 12 are snapped together by the snap-fit ​​flange 23 and the slot 24.

[0043] In the design, for easy assembly and disassembly, the support arm 11 and the connecting arm 12 are connected in a detachable manner. During connection, the fixing plate 22 at the end of the support arm 11 is connected to the connecting arm 12 through a fastener. To prevent the connection between the support arm 11 and the connecting arm 12 from loosening during vibration, the splicing position of the support arm 11 and the connecting arm 12 is engaged by a snap-fit ​​flange 23 and a snap-fit ​​groove 24. This ensures the firmness and stability of the assembly of the support arm 11 and the connecting arm 12. In the design, the extension direction of the snap-fit ​​flange 23 intersects with the vibration direction of the support wheel 14, preferably at an angle of 90 degrees. The advantage of this design is that when the support wheel 14 drives the connecting arm 12 to vibrate up and down, the support arm 11 and the connecting arm 12 are directly driven to bear the force through the snap-fit ​​flange 23. This can greatly reduce the load borne by the fastener on the fixing plate 22 and avoid the problem of loosening at the contact position between the fixing plate 22 and the connecting arm 12.

[0044] Example 2

[0045] 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 support wheel assembly 100 in the above embodiment 1, and the personal mobility vehicle 200 has the relevant functions of the support wheel assembly 100 in the above embodiment 1.

[0046] 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 support wheel assembly, characterized in that, include: A support arm (11) is set at one end of the chassis frame (10) and connected to the chassis frame (10); A connecting arm (12) is fixedly installed on the supporting arm (11); The suspension arm (13) is hinged at one end to the connecting arm (12) and rotatably connected to the support wheel (14) at the other end; The buffer link (15) is hinged at one end to the connecting arm (12) and at the other end to the suspension arm (13); The hinge point between the suspension arm (13) and the connecting arm (12) is the first hinge point (16), the hinge point between the buffer link (15) and the connecting arm (12) is the second hinge point (17), and the hinge point between the buffer link (15) and the suspension arm (13) is the third hinge point (18). The first hinge point (16), the second hinge point (17), and the third hinge point (18) are arranged in a triangular pattern.

2. The support wheel assembly according to claim 1, characterized in that, The buffer link (15) is fitted with a buffer spring (19) and a fastening sleeve (20). One end of the buffer link (15) is provided with a support block (21). One end of the buffer spring (19) abuts against the support block (21), and the other end abuts against the fastening sleeve (20).

3. A support wheel assembly according to claim 1 or 2, characterized in that, The buffer link (15) is a telescopic link.

4. A support wheel assembly according to claim 2, characterized in that, The fastening sleeve (20) is movable on the buffer link (15) to control the compression force of the buffer spring (19).

5. A support wheel assembly according to claim 4, characterized in that, The fastening sleeve (20) is threadedly connected to the buffer connecting rod (15).

6. A support wheel assembly according to claim 4, characterized in that, One of the support arm (11) and the connecting arm (12) is provided with a snap-fit ​​flange (23), and the other of the support arm (11) and the connecting arm (12) is provided with a slot (24) adapted to the snap-fit ​​flange (23). The support arm (11) and the connecting arm (12) are snapped together by the snap-fit ​​flange (23) and the slot (24).

7. A support wheel assembly according to claim 6, characterized in that, The extension direction of the engagement flange (23) intersects with the vibration direction of the support wheel (14).

8. A support wheel assembly according to claim 6, characterized in that, The end of the support arm (11) is provided with a fixing plate (22), which is fixedly connected to the connecting arm (12) by a fastener.

9. A support wheel 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).

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

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