A shock absorbing four-wheeled vehicle structure

Abstract

The utility model discloses a kind of shock-absorbing four-wheel vehicle structures, comprising: foldable seat assembly;Handrail assembly, respectively set in the both sides of the seat assembly, at least including the horizontal bar of bottom and the handrail bar of setting on the horizontal bar;Connecting rod, upper end is connected with the horizontal bar middle rear position, lower end is connected with rear wheel;Shock-absorbing system, upper end is connected with the rear end of the horizontal bar, lower end is connected with the middle position of the connecting rod;It is better in shock-absorbing buffering performance, beneficial to improve the riding experience of person.

Description

Technical Field

[0001] This utility model relates to the field of four-wheeled vehicle technology, and in particular to a shock-absorbing four-wheeled vehicle structure. Background Technology

[0002] In related technologies, four-wheeled vehicles are widely used in homes, hospitals, and rehabilitation institutions. For people with mobility difficulties, the elderly, the frail, or lower limb disabilities, four-wheeled vehicles can help them walk or assist them in rehabilitation training.

[0003] However, existing four-wheeled vehicles have poor shock absorption and cushioning performance. Especially when the four-wheeled vehicle travels over uneven roads, passengers will feel a noticeable bump, resulting in a poor user experience. Furthermore, the bumps can affect the internal structure of the four-wheeled vehicle, affecting the connections between some parts, which in turn affects the stability and reliability of the four-wheeled vehicle and reduces its lifespan.

[0004] Therefore, it is necessary to improve existing technologies. Utility Model Content

[0005] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a shock-absorbing four-wheeled vehicle structure with better shock absorption and cushioning performance, which is conducive to improving the riding experience of passengers.

[0006] The above objective is achieved through the following technical solution:

[0007] A shock-absorbing four-wheeled vehicle structure, comprising:

[0008] Foldable seat components;

[0009] Armrest assemblies are respectively disposed on both sides of the seat assembly, and include at least a bottom crossbar and an armrest bar disposed on the crossbar;

[0010] The connecting rod is connected at its upper end to the middle of the crossbar and at its lower end to the rear wheel;

[0011] The shock absorption system is connected at its upper end to the rear end of the crossbar and at its lower end to the middle position of the connecting rod.

[0012] In some embodiments, the crossbar extends horizontally along the front-rear direction of the seat assembly, the lower end of the armrest is connected to the middle position or the middle front position of the crossbar, and the armrest is inclined to the rearward side along the vertical direction of the seat assembly.

[0013] In some embodiments, the connecting rod is arc-shaped, and the lower end of the connecting rod is located below the rear side of the crossbar, with a front wheel provided at the front end of the crossbar.

[0014] In some embodiments, the damping system is tilted downwards and rearwards towards the crossbar.

[0015] In some embodiments, the damping system includes a damping rod and a damping spring. A first blocking portion is provided at the upper end of the damping rod, and a second blocking portion is provided at the lower end of the damping rod. The damping spring is sleeved on the outside of the damping rod and is compressed and confined between the first blocking portion and the second blocking portion. A first connecting portion is formed on the damping rod above the first blocking portion for connecting to the rear end of the crossbar, and a second connecting portion is formed on the damping rod below the second blocking portion for connecting to the connecting rod.

[0016] In some embodiments, a first connecting member is provided at the rear end of the crossbar, and a second connecting member is provided on the connecting rod. The first connecting part of the shock absorption system is connected to the first connecting member, and the second connecting part is connected to the second connecting member.

[0017] In some embodiments, the first connecting member includes at least a first base plate, a first left side plate and a first right side plate respectively disposed on both sides of the first base plate, a first connecting groove is formed between the first base plate, the first left side plate and the first right side plate, the first base plate is fixed to the rear end of the crossbar, and the first connecting part of the shock absorption system is inserted into the first connecting groove and connected to the first left side plate and the first right side plate.

[0018] The second connecting member includes at least a second base plate, a second left side plate and a second right side plate respectively disposed on both sides of the second base plate, a second connecting groove is formed between the second base plate, the second left side plate and the second right side plate, the second base plate is fixed to the connecting rod, and the second connecting part of the shock absorption system is inserted into the second connecting groove and connected to the second left side plate and the second right side plate.

[0019] In some embodiments, a third connecting member is provided at a position rearward from the middle of the crossbar, and the upper end of the connecting rod is connected to the third connecting member.

[0020] In some embodiments, the third connecting member includes at least a third substrate, a third left side plate and a third right side plate respectively disposed on both sides of the third substrate, a third connecting groove is formed between the third substrate, the third left side plate and the third right side plate, the crossbar is inserted into the third connecting groove and connected to the third left side plate and the third right side plate, and the upper end of the connecting rod is connected to the bottom of the third substrate.

[0021] In some embodiments, a first washer is provided between the third left side plate and the crossbar, and a second washer is provided between the third right side plate and the crossbar, and the first washer and the second washer are connected together by a connecting shaft.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] 1. This utility model provides a shock-absorbing four-wheeled vehicle structure with better shock absorption and cushioning performance, which helps to improve the riding experience of passengers. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the shock-absorbing four-wheeled vehicle in the embodiment. Figure 1 ;

[0025] Figure 2 This is a three-dimensional schematic diagram of the shock-absorbing four-wheeled vehicle in the embodiment. Figure 2 ;

[0026] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0027] Figure 4 This is a partial exploded view of the shock-absorbing four-wheeled vehicle in the embodiment;

[0028] Figure 5 yes Figure 4 A magnified view of part B in the middle section;

[0029] Figure 6 This is a three-dimensional schematic diagram of the shock absorption system in the embodiment. Detailed Implementation

[0030] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0031] Example 1: As Figures 1 to 6 As shown, this embodiment provides a shock-absorbing four-wheeled vehicle structure, including:

[0032] Foldable seat assembly 1;

[0033] Armrest assembly 2 is respectively disposed on both sides of the seat assembly 1, and includes at least a bottom crossbar 21 and an armrest bar 22 disposed on the crossbar 21;

[0034] Link 3 is connected at its upper end to the middle of the crossbar 21 at a position to the rear, and at its lower end to the rear wheel 41;

[0035] The shock absorption system 5 is connected at its upper end to the rear end of the crossbar 21 and at its lower end to the middle position of the connecting rod 3.

[0036] The shock-absorbing four-wheeled vehicle structure provided in this embodiment has better shock absorption and cushioning performance, which helps to improve the riding experience of passengers.

[0037] Specifically, through the added shock absorption system 5, when the four-wheeled vehicle travels over uneven road surfaces, the shock absorption system 5 can reduce the bumps and vibrations transmitted from the rear wheel 41 to the armrest assembly 2 and seat assembly 1, thereby improving the riding experience for passengers. Furthermore, by reducing the bumps and vibrations of the armrest assembly 2 and seat assembly 1, the impact of bumps and vibrations on the internal structure of the four-wheeled vehicle is reduced, as is the impact on the connections between parts, which helps improve the stability and reliability of the four-wheeled vehicle and extends its service life.

[0038] In this embodiment, the crossbar 21 extends horizontally along the front-rear direction of the seat assembly 1, and the lower end of the armrest 22 is connected to the middle position or the middle front position of the crossbar 21. The armrest assembly 2 is roughly inverted T-shaped, with a simple structure and high overall stability and reliability. The armrest 22 is inclined to the rear along the vertical direction of the seat assembly 1. The inclined armrest 22 facilitates the user to push the four-wheeled vehicle.

[0039] Furthermore, the connecting rod 3 is arc-shaped, and the lower end of the connecting rod 3 is located below the rear side of the crossbar 21. A front wheel 42 is provided at the front end of the crossbar 21. Its structure is simple and its arrangement is reasonable, which can further reduce the bumps and vibrations transmitted from the rear wheel 41 to the armrest assembly 2 and the seat assembly 1, thereby achieving the purpose of improving the shock absorption and buffering performance of the four-wheeled vehicle.

[0040] Preferably, the shock absorption system 5 is inclined to the rear side below the crossbar 21. Its structure is simple and its design is reasonable. This can improve the shock absorption and buffering performance of the four-wheeled vehicle to a certain extent, and reduce the bumps and vibrations transmitted from the rear wheel 41 to the armrest assembly 2 and the seat assembly 1.

[0041] In this embodiment, the shock absorption system 5 includes a shock absorption rod 51 and a shock absorption spring 52. A first blocking part 511 is provided at the upper end of the shock absorption rod 51, and a second blocking part 512 is provided at the lower end of the shock absorption rod 51. The shock absorption spring 52 is sleeved on the outside of the shock absorption rod 51 and is compressed and limited between the first blocking part 511 and the second blocking part 512. A first connecting part 513 is formed on the shock absorption rod 51 on the upper side of the first blocking part 511 for connecting to the rear end of the crossbar 21. A second connecting part 514 is formed on the shock absorption rod 51 on the lower side of the second blocking part 512 for connecting to the connecting rod 3. The overall structure of the shock absorption system 5 is simple and reasonably designed, with good shock absorption and buffering performance, which can effectively reduce the bumps and vibrations transmitted from the rear wheel 41 to the armrest assembly 2 and the seat assembly 1.

[0042] Furthermore, a first connecting member 6 is provided at the rear end of the crossbar 21, and a second connecting member 7 is provided on the connecting rod 3. The first connecting part 513 of the shock absorption system 5 is connected to the first connecting member 6, and the second connecting part 514 is connected to the second connecting member 7. Its structure is simple and its design is reasonable, which can improve the convenience of connecting the shock absorption system 5 with the crossbar 21 and the connecting rod 3.

[0043] Furthermore, the first connecting member 6 includes at least a first base plate 61, a first left side plate 62 and a first right side plate 63 respectively disposed on both sides of the first base plate 61, and a first connecting groove 64 formed between the first base plate 61, the first left side plate 62 and the first right side plate 63. The first base plate 61 is fixed to the rear end of the crossbar 21. The first connecting part 513 of the shock absorption system 5 is inserted into the first connecting groove 64 and connected to the first left side plate 62 and the first right side plate 63. Its structure is simple, the connection between the shock absorption system 5 and the crossbar 21 is simple, and the stability and reliability are higher.

[0044] The second connecting member 7 includes at least a second base plate 71, a second left side plate 72 and a second right side plate 73 respectively disposed on both sides of the second base plate 71, and a second connecting groove 74 formed between the second base plate 71, the second left side plate 72 and the second right side plate 73. The second base plate 71 is fixed to the connecting rod 3. The second connecting part 514 of the shock absorption system 5 is inserted into the second connecting groove 74 and connected to the second left side plate 72 and the second right side plate 73. Its structure is simple, the connection between the shock absorption system 5 and the connecting rod 3 is simple, and the stability and reliability are higher.

[0045] In this embodiment, a third connecting member 8 is provided at the position rear of the middle of the crossbar 21. The upper end of the connecting rod 3 is connected to the third connecting member 8. Its structure is simple and its design is reasonable, which can improve the convenience of connecting the connecting rod 3 and the crossbar 21.

[0046] Furthermore, the third connecting member 8 includes at least a third base plate 81, a third left side plate 82 and a third right side plate 83 respectively disposed on both sides of the third base plate 81, a third connecting groove 84 is formed between the third base plate 81, the third left side plate 82 and the third right side plate 83, the crossbar 21 is inserted into the third connecting groove 84 and connected to the third left side plate 82 and the third right side plate 83, and the upper end of the connecting rod 3 is connected to the bottom of the third base plate 81. Its structure is simple, the connection between the connecting rod 3 and the crossbar 21 is simple, and the stability and reliability are higher.

[0047] Furthermore, a first washer 91 is provided between the third left side plate 82 and the crossbar 21, and a second washer 92 is provided between the third right side plate 83 and the crossbar 21. The first washer 91 and the second washer 92 are connected together by a connecting shaft 93. The structure is simple, which can further improve the stability and reliability of the connection between the connecting rod 3 and the crossbar 21.

[0048] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A shock-absorbing four-wheeled vehicle structure, characterized in that, include: Foldable seat assembly (1); Armrest assemblies (2) are respectively disposed on both sides of the seat assembly (1), including at least a bottom crossbar (21) and an armrest bar (22) disposed on the crossbar (21); The upper end of the connecting rod (3) is connected to the middle of the crossbar (21) at the rear position, and the lower end is connected to the rear wheel (41); The shock absorption system (5) is connected at its upper end to the rear end of the crossbar (21) and at its lower end to the middle position of the connecting rod (3).

2. The shock-absorbing four-wheeled vehicle structure according to claim 1, characterized in that: The crossbar (21) extends horizontally along the front-back direction of the seat assembly (1), the lower end of the armrest (22) is connected to the middle position or the middle front position of the crossbar (21), and the armrest (22) is inclined to the rear along the up-down direction of the seat assembly (1).

3. The shock-absorbing four-wheeled vehicle structure according to claim 1, characterized in that: The connecting rod (3) is arc-shaped, and the lower end of the connecting rod (3) is located below the rear side of the crossbar (21). A front wheel (42) is provided at the front end of the crossbar (21).

4. A shock-absorbing four-wheeled vehicle structure according to claim 1, 2, or 3, characterized in that: The shock absorption system (5) is inclined to the rear side below the crossbar (21).

5. The shock-absorbing four-wheeled vehicle structure according to claim 4, characterized in that: The shock absorption system (5) includes a shock absorption rod (51) and a shock absorption spring (52). A first blocking part (511) is provided at the upper end of the shock absorption rod (51), and a second blocking part (512) is provided at the lower end of the shock absorption rod (51). The shock absorption spring (52) is sleeved on the outside of the shock absorption rod (51) and is compressed and limited between the first blocking part (511) and the second blocking part (512). A first connecting part (513) is formed on the upper side of the first blocking part (511) and on the shock absorption rod (51) for connecting to the rear end of the crossbar (21). A second connecting part (514) is formed on the lower side of the second blocking part (512) and on the shock absorption rod (51) for connecting to the connecting rod (3).

6. The shock-absorbing four-wheeled vehicle structure according to claim 5, characterized in that: A first connecting member (6) is provided at the rear end of the crossbar (21), and a second connecting member (7) is provided on the connecting rod (3). The first connecting part (513) of the shock absorption system (5) is connected to the first connecting member (6), and the second connecting part (514) is connected to the second connecting member (7).

7. The shock-absorbing four-wheeled vehicle structure according to claim 6, characterized in that: The first connecting member (6) includes at least a first base plate (61), a first left side plate (62) and a first right side plate (63) respectively disposed on both sides of the first base plate (61), a first connecting groove (64) is formed between the first base plate (61), the first left side plate (62) and the first right side plate (63), the first base plate (61) is fixed to the rear end of the crossbar (21), and the first connecting part (513) of the shock absorption system (5) is inserted into the first connecting groove (64) and connected together with the first left side plate (62) and the first right side plate (63); The second connecting member (7) includes at least a second base plate (71), a second left side plate (72) and a second right side plate (73) respectively disposed on both sides of the second base plate (71), a second connecting groove (74) is formed between the second base plate (71), the second left side plate (72) and the second right side plate (73), the second base plate (71) is fixed on the connecting rod (3), and the second connecting part (514) of the shock absorption system (5) is inserted into the second connecting groove (74) and connected together with the second left side plate (72) and the second right side plate (73).

8. A shock-absorbing four-wheeled vehicle structure according to claim 1, 2 or 3, characterized in that: A third connecting member (8) is provided at the position behind the middle of the crossbar (21), and the upper end of the connecting rod (3) is connected to the third connecting member (8).

9. The shock-absorbing four-wheeled vehicle structure according to claim 8, characterized in that: The third connecting member (8) includes at least a third base plate (81), a third left side plate (82) and a third right side plate (83) respectively disposed on both sides of the third base plate (81), a third connecting groove (84) is formed between the third base plate (81), the third left side plate (82) and the third right side plate (83), the crossbar (21) is inserted into the third connecting groove (84) and connected to the third left side plate (82) and the third right side plate (83), and the upper end of the connecting rod (3) is connected to the bottom of the third base plate (81).

10. A shock-absorbing four-wheeled vehicle structure according to claim 9, characterized in that: A first washer (91) is provided between the third left side plate (82) and the crossbar (21), and a second washer (92) is provided between the third right side plate (83) and the crossbar (21). The first washer (91) and the second washer (92) are connected together by a connecting shaft (93).

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