One-key back-lying electric wheelchair

Abstract

The utility model relates to a kind of electric wheelchair of one-key back lying, including seat plate, the bottom of seat plate is fixedly installed with connecting seat, the bottom of connecting seat is movably installed with damping structure, the top of seat plate is movably installed with function structure, the damping structure includes the damping seat in the bottom of connecting seat, the bottom of connecting seat is movably installed with the slider of four, the bottom of four The slider is hingedly connected with connecting rod.The electric wheelchair of one-key back lying, when using, by starting drive motor to drive worm gear to rotate, to cooperate with worm sleeve to drive threaded rod to rotate synchronously, to cooperate with threaded block to drive toothed plate to move, when toothed plate moves to left side, can drive driving gear meshing with toothed plate to rotate, to drive backrest to rotate, to rotate to certain angle and seat plate form a horizontal line when drive motor is closed, can realize the effect of one-key back lying.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchair technology, specifically to an electric wheelchair that can recline with one button. Background Technology

[0002] Electric wheelchairs are an upgraded version of traditional manual wheelchairs, incorporating high-performance power drive devices, intelligent control devices, batteries, and other components. Equipped with a human-operated intelligent controller, they can drive the wheelchair to perform multiple functions such as forward movement, backward movement, turning, standing, and lying down. They are high-tech products that combine modern precision mechanics, intelligent numerical control, and engineering mechanics. They serve as a means of transportation and a commonly used medical rehabilitation device for people with limb disabilities and mobility impairments, and are also essential for users to engage in physical exercise and participate in social activities.

[0003] Most electric wheelchairs on the market currently have some shortcomings in use. For example, they do not have good shock absorption and cushioning functions, resulting in a poor user experience when encountering bumpy roads. Also, most wheelchairs that can recline flat require assistance to lower the backrest before they can lie flat, and when they need to get up, they also need assistance to push them up, which is very inconvenient and cannot be done independently. In view of this, we propose an electric wheelchair that can recline with one button. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electric wheelchair that can recline with a single button. It has the advantages of being able to recline independently with a single button and also has certain shock absorption and cushioning functions. This solves the problem that traditional electric wheelchairs require assistance to recline, which is very inconvenient and lacks shock absorption and cushioning functions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric wheelchair that can recline with one button, including a seat, a connecting seat fixedly installed at the bottom of the seat, a shock-absorbing structure movably installed at the bottom of the connecting seat, and a functional structure movably installed at the top of the seat; The shock-absorbing structure includes a shock-absorbing seat located at the bottom of the connecting seat. Four sliders are movably installed at the bottom of the connecting seat. Each of the four sliders is hinged to a connecting rod at its bottom. Each of the four connecting rods is hinged to a shock-absorbing rod on its outer surface. Four fixing plates are fixedly installed at the top of the shock-absorbing seat. Each of the four fixing plates is fixedly installed with a sliding rod on its outer surface. Each of the four sliding rods is movably installed with a buffer spring on its outer surface and a shock-absorbing block on its outer surface.

[0006] The functional structure includes a backrest located on the outer surface of the seat, a drive gear fixedly installed on the outer surface of the backrest, a drive motor fixedly installed on the inner top wall of the seat, a threaded rod movably installed on the right inner wall of the seat, a threaded block threadedly connected to the outer surface of the threaded rod, a toothed plate fixedly installed on the outer surface of the threaded block, a worm gear fixedly installed at the bottom output shaft of the drive motor, and a worm sleeve fixedly installed on the outer surface of the threaded rod.

[0007] Furthermore, two connecting rods are fixedly installed on the outer surface of the seat, two armrests are fixedly installed on the top of the seat, a fixing plate is fixedly installed on the bottom of the seat, two casters are provided at the bottom of the vertical plate, and two rear wheels are provided on the outer surface of the shock absorber.

[0008] Furthermore, a limiting groove is formed on the inner wall of the seat plate, and a limiting block that is movably connected to the limiting groove is fixedly installed on the outer surface of the threaded block. The outer surface of the backrest plate is hinged to the inner wall of the seat plate.

[0009] Furthermore, the outer surface of the worm sleeve meshes with the outer surface of the worm wheel, and the outer surface of the toothed plate meshes with the outer surface of the drive gear.

[0010] Furthermore, the bottom of the connecting seat has two sliding grooves, and the four sliders are movably connected to the inner wall of the sliding grooves.

[0011] Furthermore, the bottom of each of the four connecting rods is hinged to the outer surface of the shock absorber seat, the outer surface of each of the four buffer springs is in contact with the outer surface of the shock absorber block, and the outer surface of each of the four shock absorber rods is hinged to the outer surface of the shock absorber block.

[0012] Furthermore, the bottom of each of the four connecting rods is hinged to the outer surface of the shock absorber seat, the outer surface of each of the four buffer springs is in contact with the outer surface of the shock absorber block, and the outer surface of each of the four shock absorber rods is hinged to the outer surface of the shock absorber block.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This electric wheelchair with one-button reclining function works by starting the drive motor, which drives the worm gear to rotate. This, in turn, drives the threaded rod to rotate synchronously, which in turn drives the toothed plate to move. When the toothed plate moves to the left, it drives the drive gear meshing with the toothed plate to rotate, which in turn drives the backrest to rotate. When the backrest rotates to a certain angle and forms a horizontal line with the seat, the drive motor shuts off, achieving the one-button reclining effect. The time when the drive motor shuts off can also be set to allow for more flexible adjustment of the backrest's tilt angle.

[0014] 2. This electric wheelchair, which can recline with a single button, presses the connecting seat into the shock-absorbing seat when the wheelchair travels over bumpy roads. This, in turn, causes the shock-absorbing rod to press against the shock-absorbing block, which in turn compresses the shock-absorbing block against the buffer spring. The buffer spring helps to alleviate the impact of bumpy roads, and the spring damper prevents the connecting seat from rebounding within the shock-absorbing seat, thus achieving a good cushioning effect when encountering bumpy roads. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the functional structure of this utility model; Figure 3 This utility model provides a shock-absorbing structure. Figure 2 Enlarged view of point A in the middle; Figure 4 This is a top sectional view of the functional structure of this utility model.

[0016] In the diagram: 1. Seat plate; 2. Connecting seat; 3. Shock-absorbing structure; 301. Shock-absorbing seat; 302. Slider; 303. Connecting rod; 304. Shock-absorbing rod; 305. Fixing plate; 306. Slide rod; 307. Buffer spring; 308. Shock-absorbing block; 4. Functional structure; 401. Backrest plate; 402. Drive gear; 403. Drive gear; 404. Threaded rod; 405. Threaded block; 406. Gear plate; 407. Worm gear; 408. Worm sleeve; 5. Fixing rod; 6. Handrail; 7. Vertical plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 An electric wheelchair that can recline with one button in this embodiment includes a seat 1, a connecting seat 2 fixedly installed at the bottom of the seat 1, a shock-absorbing structure 3 movably installed at the bottom of the connecting seat 2, and a functional structure 4 movably installed at the top of the seat 1. The shock-absorbing structure 3 includes a shock-absorbing seat 301 located at the bottom of the connecting seat 2. Four sliders 302 are movably installed at the bottom of the connecting seat 2. Each of the four sliders 302 is hinged to a connecting rod 303 at its bottom. Each of the four connecting rods 303 is hinged to a shock-absorbing rod 304 on its outer surface. Four fixing plates 305 are fixedly installed at the top of the shock-absorbing seat 301. Each of the four fixing plates 305 is fixedly installed to a slide rod 306 on its outer surface. Each of the four slide rods 306 is movably installed to a buffer spring 307 on its outer surface. Each of the four slide rods 306 is movably installed to a shock-absorbing block 308 on its outer surface.

[0019] Functional structure 4 includes a backrest 401 located on the outer surface of the seat plate 1. A drive gear 402 is fixedly installed on the outer surface of the backrest 401. A drive motor 403 is fixedly installed on the inner top wall of the seat plate 1. A threaded rod 404 is movably installed on the right inner wall of the seat plate 1. A threaded block 405 is threadedly connected to the outer surface of the threaded rod 404. A toothed plate 406 is fixedly installed on the outer surface of the threaded block 405. A worm gear 407 is fixedly installed at the bottom output shaft of the drive motor 403. A worm sleeve 408 is fixedly installed on the outer surface of the threaded rod 404.

[0020] In this embodiment, two fixing rods 5 are fixedly installed on the outer surface of the seat plate 1, two armrests 6 are fixedly installed on the top of the seat plate 1, a vertical plate 7 is fixedly installed on the bottom of the seat plate 1, a limiting groove is opened on the inner wall of the seat plate 1, a limiting block that is movably connected to the limiting groove is fixedly installed on the outer surface of the threaded block 405, and the outer surface of the backrest 401 is hinged to the inner wall of the seat plate 1.

[0021] Specifically, by providing a limiting groove and a limiting block, the threaded block 405 can be limited, thereby enabling the rotation of the threaded rod 404 to drive the threaded block 405 to move.

[0022] In this embodiment, the outer surface of the worm sleeve 408 meshes with the outer surface of the worm wheel 407, the outer surface of the tooth plate 406 meshes with the outer surface of the drive gear 402, and the bottom of the connecting seat 2 is provided with two sliding grooves, and four sliders 302 are movably connected to the inner wall of the sliding grooves respectively.

[0023] Specifically, by providing a sliding groove, the slider 302 can be limited, thereby achieving a more stable effect when the slider 302 moves. By setting the toothed plate 406 and the drive gear 402 to mesh, the movement of the toothed plate 406 can drive the drive gear 402 and the backing plate 401 to rotate.

[0024] In this embodiment, the bottom of each of the four connecting rods 303 is hinged to the outer surface of the damping seat 301, the outer surface of each of the four buffer springs 307 is in contact with the outer surface of the damping block 308, the outer surface of each of the four damping rods 304 is hinged to the outer surface of the damping block 308, T-shaped grooves are provided on the inner walls of the left and right sides of the damping seat 301, T-shaped blocks that are movably connected to the T-shaped grooves are fixedly installed on the outer surfaces of the left and right sides of the connecting seat 2, and four spring dampers are fixedly installed between the top of the damping seat 301 and the bottom of the connecting seat 2.

[0025] Specifically, by setting the buffer spring 307 and the shock absorber 308 to fit together, the shock absorber 308 can compress the buffer spring 307 to alleviate the impact force on bumpy road sections. By providing T-shaped blocks and T-shaped grooves, the connecting seat 2 can achieve a more stable effect when the shock absorber 301 moves up and down.

[0026] In summary, this electric wheelchair with one-button reclining function works by activating the drive motor 403, which drives the worm gear 407 to rotate. This, in turn, engages the worm sleeve 408 to drive the threaded rod 404 synchronously, which in turn engages the threaded block 405 to move the gear plate 406. When the gear plate 406 moves to the left, it drives the drive gear 402, which meshes with the gear plate 406, to rotate. This, in turn, drives the backrest 401 to rotate. When the backrest 401 rotates to a certain angle and forms a horizontal line with the seat 1, the drive motor 403 shuts off, achieving the one-button reclining effect. The timing of the drive motor 403's shutdown can be set to more flexibly adjust the tilt angle of the backing plate 401. When the whole thing passes through a bumpy road section, the connecting seat 2 presses into the shock absorber seat 301, which, in conjunction with the connecting rod 303, causes the shock absorber rod 304 to press against the shock absorber block 308 in the opposite direction. This allows the shock absorber block 308 to press against the buffer spring 307, which in turn can alleviate the impact force generated by the bumpy road section. The spring damper prevents the connecting seat 2 from rebounding within the shock absorber seat 301, thus achieving a good buffering effect when encountering bumpy road sections.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric wheelchair capable of reclining with one button, comprising a seat (1), characterized in that: A connecting seat (2) is fixedly installed at the bottom of the seat (1), a shock-absorbing structure (3) is movably installed at the bottom of the connecting seat (2), and a functional structure (4) is movably installed at the top of the seat (1). The shock-absorbing structure (3) includes a shock-absorbing seat (301) located at the bottom of the connecting seat (2). Four sliders (302) are movably installed at the bottom of the connecting seat (2). Connecting rods (303) are hinged to the bottom of each of the four sliders (302). Shock-absorbing rods (304) are hinged to the outer surfaces of each of the four connecting rods (303). Four fixing plates (305) are fixedly installed at the top of the shock-absorbing seat (301). Slide rods (306) are fixedly installed on the outer surfaces of each of the four fixing plates (305). Buffer springs (307) are movably installed on the outer surfaces of each of the four slide rods (306). Shock-absorbing blocks (308) are movably installed on the outer surfaces of each of the four slide rods (306). The functional structure (4) includes a backrest (401) located on the outer surface of the seat (1), a drive gear (402) is fixedly installed on the outer surface of the backrest (401), a drive motor (403) is fixedly installed on the inner top wall of the seat (1), a threaded rod (404) is movably installed on the right inner wall of the seat (1), a threaded block (405) is threadedly connected to the outer surface of the threaded rod (404), a toothed plate (406) is fixedly installed on the outer surface of the threaded block (405), a worm gear (407) is fixedly installed at the bottom output shaft of the drive motor (403), and a worm sleeve (408) is fixedly installed on the outer surface of the threaded rod (404).

2. The electric wheelchair with one-button reclining function according to claim 1, characterized in that: Two fixing rods (5) are fixedly installed on the outer surface of the seat (1), two armrests (6) are fixedly installed on the top of the seat (1), a vertical plate (7) is fixedly installed on the bottom of the seat (1), two universal wheels are provided at the bottom of the vertical plate (7), and two rear wheels are provided on the outer surface of the shock absorber (301).

3. The electric wheelchair with one-button reclining function according to claim 1, characterized in that: The inner wall of the seat plate (1) is provided with a limiting groove, and the outer surface of the threaded block (405) is fixedly installed with a limiting block that is movably connected to the limiting groove. The outer surface of the backrest (401) is hinged to the inner wall of the seat plate (1).

4. The electric wheelchair with one-button reclining function according to claim 1, characterized in that: The outer surface of the worm sleeve (408) meshes with the outer surface of the worm wheel (407), and the outer surface of the toothed plate (406) meshes with the outer surface of the drive gear (402).

5. The electric wheelchair with one-button reclining function according to claim 1, characterized in that: The bottom of the connecting seat (2) has two sliding grooves, and the four sliders (302) are movably connected to the inner wall of the sliding grooves.

6. The electric wheelchair with one-button reclining function according to claim 1, characterized in that: The bottom of each of the four connecting rods (303) is hinged to the outer surface of the damping seat (301), the outer surface of each of the four buffer springs (307) is in contact with the outer surface of the damping block (308), and the outer surface of each of the four damping rods (304) is hinged to the outer surface of the damping block (308).

7. The electric wheelchair with one-button reclining function according to claim 1, characterized in that: The inner walls of the left and right sides of the shock absorber (301) are provided with T-shaped grooves. The outer surfaces of the left and right sides of the connecting seat (2) are fixedly installed with T-shaped blocks that are movably connected to the T-shaped grooves. Four spring dampers are fixedly installed between the top of the shock absorber (301) and the bottom of the connecting seat (2).

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