Cushioning wheelchair

Abstract

The invention discloses a cushioning wheelchair which comprises a frame body and universal wheels installed at the bottom of the frame body, an end plate which corresponds to a bottom plate of a fork seat and is located below the bottom plate is arranged between the front end areas of the upper ends of a left fork plate and a right fork plate, and at least one pull rod is sequentially embedded into corresponding through holes of the bottom plate and the end plate. The upper end, located above the spring, of the pull rod is provided with an upper limiting part, the lower end, extending out of the through hole of the end plate, of the pull rod is provided with a lower limiting part, the rear end area of the upper end of the left fork plate is rotationally connected with the rear end area of the fork base, and the rear end area of the upper end of the right fork plate is rotationally connected with the rear end area of the fork base. And the frame body is connected with the universal wheel through a vertical shaft. According to the cushioning wheelchair, on the basis of facilitating steering of the wheelchair, the ridge passing capacity of the wheelchair is improved, the bumping amplitude is effectively reduced, the damping effect of the rollers and the use experience of personnel are improved, and the overall safety is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchairs, and in particular to a shock-absorbing wheelchair. Background Art

[0002] Wheelchairs are widely used as a means of transportation for the disabled, rehabilitated people or people with limited mobility. Wheelchairs can not only meet the needs of the physically disabled and people with limited mobility, but more importantly, they can also facilitate family members to move and take care of patients, and patients can use wheelchairs to exercise and participate in social activities.

[0003] After searching, the Chinese patent publication number CN116035815A discloses a lifting, folding and transporting wheelchair, including a wheelchair panel and a base frame; a screw is rotatably connected in the middle of the base frame, the screw is provided with a thread, a moving block is sleeved on the screw, a push rod is rotatably connected to the moving block, a U-shaped bracket is fixedly connected to the bottom of the wheelchair panel, the upper end of the push rod is rotatably connected to the U-shaped bracket, the screw rotates to drive the moving block to move and then drive the wheelchair panel to move up and down; armrests are rotatably connected on both sides of the wheelchair panel, one end of the wheelchair panel is rotatably connected to a backrest, and the armrests and the backrest are detachably connected to each other. The device drives the moving block to move by rotating the screw and then drives the wheelchair panel to move up and down, so that the height of the wheelchair panel can be adjusted, so that the height of the wheelchair panel is adapted to the patient; it is convenient to move the patient to the bed; it is convenient to fold it to minimize its volume.

[0004] When the above device is used for movement, the front wheels of the wheelchair cannot directly pass over the threshold when encountering the threshold, and the wheelchair needs to be moved manually. In addition, when the wheelchair moves on uneven roads, the above device does not dampen the front wheels, resulting in a strong sense of bumps for the person and a poor user experience. Summary of the invention

[0005] The purpose of the present invention is to provide a shock-absorbing wheelchair, which, on the basis of facilitating the steering of the wheelchair, improves the wheelchair's ability to cross bumps, effectively reduces the amplitude of bumps, improves the shock-absorbing effect of the rollers and the user experience of the person, and also improves the overall safety.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a shock-absorbing wheelchair, comprising: a frame body and a universal wheel installed at the bottom of the frame body, the universal wheel further comprising: a roller, a fork seat and a left fork plate and a right fork plate located on both sides of the roller, the upper end of the left fork plate is connected to the fork seat, and the lower end is connected to the axial rotation of the roller, the upper end of the right fork plate is connected to the fork seat, and the lower end is connected to the axial rotation of the roller; an end plate corresponding to the bottom plate of the fork seat and below the bottom plate is arranged between the front end areas of the upper ends of the left fork plate and the right fork plate, the bottom plate and the end plate are provided with at least one pair of through holes, and at least one pull rod is sequentially embedded in the corresponding through holes of the bottom plate and the end plate; A spring sleeved on the pull rod is located in the fork seat, the upper end of the pull rod located above the spring is provided with an upper limit portion, and the lower end of the pull rod extending from the through hole of the end plate is provided with a lower limit portion; The rear end area on the upper end of the left fork plate is rotatably connected to the rear end area of ​​the fork seat, the rear end area on the upper end of the right fork plate is rotatably connected to the rear end area of ​​the fork seat, and the frame body is connected to the universal wheel through a vertical axis.

[0007] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, the through holes of the bottom plate and the end plate are waist-shaped holes.

[0008] 2. In the above solution, the rotation axis of the vertical axis is located on one side of the center line of the roller.

[0009] 3. In the above solution, the rear end areas of the upper ends of the left fork plate and the right fork plate are rotatably connected to the rear end area of ​​the fork seat through a latch.

[0010] 4. In the above solution, the upper end of the spring contacts the upper limit portion, and the lower end of the spring contacts the bottom plate of the fork seat.

[0011] 5. In the above solution, the rear end areas of the left fork plate and the right fork plate respectively have a left baffle plate and a right baffle plate located on the left and right sides of the fork seat.

[0012] 6. In the above solution, the upper limit portion of the pull rod is an outer convex portion.

[0013] 7. In the above solution, the lower limit portion of the pull rod is a nut.

[0014] 8. The above scheme also includes a vertical shaft installed on the top of the fork seat.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The cushioning wheelchair of the present invention has an end plate corresponding to the bottom plate of the fork seat and below the bottom plate, between the front end areas of the upper ends of the left fork plate and the right fork plate, the bottom plate and the end plate are provided with at least one pair of through holes, at least one pull rod is sequentially embedded in the corresponding through holes of the bottom plate and the end plate, a set of springs mounted on the pull rod is located in the fork seat, the upper end of the pull rod located above the spring is provided with an upper limit portion, the lower end of the pull rod extending from the through hole of the end plate is provided with a lower limit portion, the rear end area of ​​the upper end of the left fork plate is rotatably connected to the rear end area of ​​the fork seat, the rear end area of ​​the upper end of the right fork plate is rotatably connected to the rear end area of ​​the fork seat, and the frame body is connected by a vertical The shaft is connected to the universal wheel, and the vertical axis is set to enable the fork seat to rotate 360°, thereby realizing the steering of the wheelchair. When the wheelchair is traveling on uneven roads, the rollers are subjected to resistance when passing over road bumps. The left fork plate and the right fork plate synchronously drive their respective end plates to pull the pull rod, and the pull rod moves in the through hole. The upper limit portion of the pull rod compresses the spring. When the spring is reset, the lower limit portion of the pull rod drives the end plate to move, so that the end plate and the fork seat can rotate and open and close, thereby improving the roller's ability to pass through bumps, effectively reducing the amplitude of bumps, improving the roller's shock absorption effect and the user experience of the personnel, and also improving the overall safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic structural diagram of the shock absorbing wheelchair of the present invention; Attached Figure 2 This is a schematic diagram of the structure of the universal wheel in the shock-absorbing wheelchair of the present invention from a first perspective; Attached Figure 3 It is a schematic structural diagram of the universal wheel in the shock-absorbing wheelchair of the present invention from a second viewing angle; Attached Figure 4 It is a partial structural cross-sectional view of the shock-absorbing wheelchair of the present invention; Attached Figure 5 The present invention is attached Figure 4 Enlarged view of point A.

[0017] In the above figures: 1. frame body; 2. universal wheel; 3. roller; 4. fork seat; 41. left baffle plate; 42. right baffle plate; 51. left fork plate; 52. right fork plate; 6. bottom plate; 7. end plate; 8. through hole; 9. pull rod; 91. upper limit part; 92. lower limit part; 10. spring; 11. latch; 12. vertical axis. Implementation

[0018] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0019] Embodiment 1: A shock-absorbing wheelchair, comprising: a frame body 1 and a universal wheel 2 installed at the bottom of the frame body 1, the universal wheel 2 further comprising: a roller 3, a fork seat 4 and a left fork plate 51 and a right fork plate 52 located on both sides of the roller 3, the upper end of the left fork plate 51 is connected to the fork seat 4, and the lower end is connected to the axial rotation of the roller 3, the upper end of the right fork plate 52 is connected to the fork seat 4, and the lower end is connected to the axial rotation of the roller 3; an end plate 7 corresponding to the bottom plate 6 of the fork seat 4 and below the bottom plate 6 is arranged between the front end areas of the upper ends of the left fork plate 51 and the right fork plate 52, the bottom plate 6 and the end plate 7 are provided with at least one pair of through holes 8, and at least one pull rod 9 is sequentially embedded in the corresponding through holes 8 of the bottom plate 6 and the end plate 7; A spring 10 mounted on the pull rod 9 is located in the fork seat 4, and an upper limit portion 91 is provided at the upper end of the pull rod 9 located above the spring 10, and a lower limit portion 92 is provided at the lower end of the pull rod 9 extending from the through hole 8 of the end plate 7; The rear end area of ​​the upper end of the left fork plate 51 is rotatably connected to the rear end area of ​​the fork seat 4, the rear end area of ​​the upper end of the right fork plate 52 is rotatably connected to the rear end area of ​​the fork seat 4, and the frame body 1 is connected to the universal wheel 2 through a vertical shaft 12; When in use, as the wheelchair moves forward, when the rollers roll on an uneven road surface and the wheelchair encounters a bump, the rollers collide with the bump and are subject to resistance, and the left fork plate and the right fork plate are subjected to force simultaneously. At this time, the end plate is subjected to force to pull the pull rod to slide in the corresponding through holes of the end plate and the bottom plate, and the upper limit portion of the pull rod compresses the spring to drive the end plate to move. After the wheelchair passes over the bump, when the compressed spring is reset, the lower limit portion of the pull rod drives the end plate to move, and the rear end areas of the upper ends of the left fork plate and the right fork plate are rotatably connected to the rear end area of ​​the fork seat through a pin, so that the end plate can rotate with the pin as the center of the circle, thereby realizing rotational opening and closing with the fork seat, so that the wheelchair can pass over the bump.

[0020] The through holes 8 of the bottom plate 6 and the end plate 7 are waist-shaped holes; By setting the shape of the through hole to a waist-shaped hole, the movable space of the pull rod is enlarged, and the roller can go over a road bump with a maximum height of 80 mm.

[0021] The rotation axis of the vertical shaft 12 is located on one side of the center line of the roller 3; The fork seat is installed at the bottom of the frame body through the vertical axis to realize 360° rotation of the universal wheel, which is convenient for the wheelchair to adjust the moving direction.

[0022] The rear end areas of the upper ends of the left fork plate 51 and the right fork plate 52 are rotatably connected to the rear end area of ​​the fork seat 4 through the latch 11.

[0023] The upper end of the spring 10 contacts the upper limit portion 91 , and the lower end of the spring 10 contacts the bottom plate 6 of the fork seat 4 .

[0024] The left fork plate 51 and the right fork plate 52 have a left baffle plate 41 and a right baffle plate 42 located on the left and right sides of the fork seat 4 at their respective rear end areas.

[0025] The upper limit portion 91 of the pull rod 9 is an outer convex portion.

[0026] It also includes a vertical shaft 12 mounted on the top of the fork seat 4.

[0027] The front end area of ​​the upper end of the end plate 7 is lower than the rear end area of ​​the upper end.

[0028] Embodiment 2: A shock-absorbing wheelchair, comprising: a frame body 1 and a universal wheel 2 installed at the bottom of the frame body 1, the universal wheel 2 further comprising: a roller 3, a fork seat 4 and a left fork plate 51 and a right fork plate 52 located on both sides of the roller 3, the upper end of the left fork plate 51 is connected to the fork seat 4, and the lower end is connected to the axial rotation of the roller 3, the upper end of the right fork plate 52 is connected to the fork seat 4, and the lower end is connected to the axial rotation of the roller 3; an end plate 7 corresponding to the bottom plate 6 of the fork seat 4 and below the bottom plate 6 is arranged between the front end areas of the upper ends of the left fork plate 51 and the right fork plate 52, the bottom plate 6 and the end plate 7 are provided with at least one pair of through holes 8, and at least one pull rod 9 is sequentially embedded in the corresponding through holes 8 of the bottom plate 6 and the end plate 7; A spring 10 mounted on the pull rod 9 is located in the fork seat 4, and an upper limit portion 91 is provided at the upper end of the pull rod 9 located above the spring 10, and a lower limit portion 92 is provided at the lower end of the pull rod 9 extending from the through hole 8 of the end plate 7; The rear end area of ​​the upper end of the left fork plate 51 is rotatably connected to the rear end area of ​​the fork seat 4, the rear end area of ​​the upper end of the right fork plate 52 is rotatably connected to the rear end area of ​​the fork seat 4, and the frame body 1 is connected to the universal wheel 2 through a vertical axis 12.

[0029] The through holes 8 of the bottom plate 6 and the end plate 7 are waist-shaped holes.

[0030] The rotation axis of the vertical shaft 12 is located on one side of the center line of the roller 3 .

[0031] The rear end areas of the upper ends of the left fork plate 51 and the right fork plate 52 are rotatably connected to the rear end area of ​​the fork seat 4 through the latch 11.

[0032] The upper end of the spring 10 contacts the upper limit portion 91 , and the lower end of the spring 10 contacts the bottom plate 6 of the fork seat 4 .

[0033] The left fork plate 51 and the right fork plate 52 have a left baffle plate 41 and a right baffle plate 42 located on the left and right sides of the fork seat 4 at their respective rear end areas.

[0034] The lower limiting portion 92 of the pull rod 9 is a nut.

[0035] It also includes a vertical shaft 12 mounted on the top of the fork seat 4.

[0036] The universal wheel 2 is installed at the front part of the frame body 1 .

[0037] Here’s how it works: When in use, during the forward movement of the wheelchair, when the rollers roll on an uneven road surface, when the wheelchair encounters a bump, the rollers collide with the bump and are subject to resistance, and the left fork plate and the right fork plate are subjected to force simultaneously. At this time, the end plate is subjected to force to pull the pull rod to slide in the corresponding through holes of the end plate and the bottom plate, and the upper limit portion of the pull rod compresses the spring to drive the end plate to move. After the wheelchair passes over the bump, when the compressed spring is reset, the lower limit portion of the pull rod drives the end plate to move, and the rear end areas of the upper ends of the left fork plate and the right fork plate are rotatably connected to the rear end area of ​​the fork seat through a latch, so that the end plate can rotate with the latch as the center of the circle, thereby realizing rotation and opening and closing with the fork seat, so that the wheelchair can pass over the bump, and by setting the shape of the through hole to a waist-shaped hole, the activity space of the pull rod is enlarged, and the roller can pass over a bump with a maximum height of 80 mm, and the fork seat is installed at the bottom of the frame body through the vertical axis to realize 360° rotation of the universal wheel, which is convenient for the wheelchair to adjust the moving direction.

[0038] When the above-mentioned shock-absorbing wheelchair is used, the fork seat can rotate 360° by setting a vertical axis, thereby realizing the steering of the wheelchair. When the wheelchair is traveling on uneven roads, the rollers are subjected to resistance when passing over road bumps. The left fork plate and the right fork plate synchronously drive their respective end plates to pull the pull rods, and the pull rods move in the through holes. The upper limit portion of the pull rods compresses the spring. When the spring is reset, the lower limit portion of the pull rods drives the end plates to move, so that the end plates and the fork seat can rotate and open and close, thereby improving the roller's ability to pass through bumps, effectively reducing the amplitude of bumps, improving the roller's shock absorption effect and the user experience, and also improving the overall safety.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock-absorbing wheelchair, comprising: A frame body (1) and a universal wheel (2) mounted on the bottom of the frame body (1), the universal wheel (2) further comprising: a roller (3), a fork seat (4) and a left fork plate (51) and a right fork plate (52) located on both sides of the roller (3), the upper end of the left fork plate (51) being connected to the fork seat (4) and the lower end being connected to the axial rotation of the roller (3), the upper end of the right fork plate (52) being connected to the fork seat (4) and the lower end being connected to the axial rotation of the roller (3); the characteristic is that: an end plate (7) corresponding to the bottom plate (6) of the fork seat (4) and below the bottom plate (6) is arranged between the front end areas of the upper ends of the left fork plate (51) and the right fork plate (52), the end plate (7) being arranged with at least one pair of through holes (8), and at least one pull rod (9) being sequentially embedded in the corresponding through holes (8) of the bottom plate (6) and the end plate (7); A spring (10) mounted on the pull rod (9) is located in the fork seat (4); an upper limit portion (91) is provided at the upper end of the pull rod (9) located above the spring (10); and a lower limit portion (92) is provided at the lower end of the pull rod (9) extending from the through hole (8) of the end plate (7); The rear end area of ​​the upper end of the left fork plate (51) is rotatably connected to the rear end area of ​​the fork seat (4), the rear end area of ​​the upper end of the right fork plate (52) is rotatably connected to the rear end area of ​​the fork seat (4), and the frame body (1) is connected to the universal wheel (2) via a vertical shaft (12).

2. The shock-absorbing wheelchair according to claim 1, characterized in that: The through holes (8) of the bottom plate (6) and the end plate (7) are waist-shaped holes.

3. The shock-absorbing wheelchair according to claim 1, characterized in that: The rotation axis of the vertical shaft (12) is located on one side of the center line of the roller (3).

4. The shock-absorbing wheelchair according to claim 1, characterized in that: The rear end regions of the upper ends of the left fork plate (51) and the right fork plate (52) are rotatably connected to the rear end region of the fork seat (4) via a latch (11).

5. The shock-absorbing wheelchair according to claim 1, characterized in that: The upper end of the spring (10) contacts the upper limit portion (91), and the lower end of the spring (10) contacts the bottom plate (6) of the fork seat (4).

6. The shock-absorbing wheelchair according to claim 1, characterized in that: The left fork plate (51) and the right fork plate (52) each have a left baffle plate (41) and a right baffle plate (42) at their rear end regions, respectively, which are located on the left and right sides of the fork seat (4).

7. The shock-absorbing wheelchair according to claim 1, characterized in that: The upper limit portion (91) of the pull rod (9) is an outer convex portion.

8. The shock-absorbing wheelchair according to claim 1, characterized in that: The lower limiting portion (92) of the pull rod (9) is a nut.

9. The shock-absorbing wheelchair according to claim 1, characterized in that: It also includes a vertical shaft (12) mounted on the top of the fork seat (4).

Images