A wheelchair shielding mechanism

Abstract

This utility model discloses a wheelchair screen mechanism, including a wheelchair body with a seat and a backrest. A screen mechanism is installed on the back of the backrest, comprising a lifting plate and a screen plate. One side of the lifting plate is slidably connected to the backrest, and the screen plate is installed on one side of the lifting plate. The tops of the lifting plate and the screen plate are hinged together. A sliding seat is fixedly installed on the back of the backrest, and two symmetrically distributed slide rails are provided on one side of the sliding seat. A slider is installed on one side of the lifting plate, and the lifting plate is slidably mounted within the slide rails via the slider. A driving mechanism is provided between the lifting plate and the sliding seat. This utility model allows for convenient adjustment of the screen plate height to accommodate different heights or usage scenarios, and also allows for flexible adjustment of the screen area.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, specifically to a wheelchair shielding mechanism. Background Technology

[0002] Wheelchairs are commonly used assistive mobility tools for people with mobility impairments. When used outdoors, they often need protection from sunlight, wind, and rain. Existing wheelchair protection devices, such as sun umbrellas and canopies, are usually complex in structure, inconvenient to install and disassemble, and have limited coverage, failing to flexibly adjust the position and area of ​​the protection according to actual needs. In addition, existing protection devices are also cumbersome to store and occupies a lot of space when not in use. Utility Model Content

[0003] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wheelchair shielding mechanism, comprising a wheelchair body, a seat and a backrest on the wheelchair body, a shielding mechanism installed on the back of the backrest, the shielding mechanism comprising a lifting plate and a shielding plate, one side of the lifting plate being slidably connected to the backrest, the shielding plate being installed on one side of the lifting plate, the tops of the lifting plate and the shielding plate being movably hinged, a sliding seat being fixedly installed on the back of the backrest, two symmetrically distributed slide rails being provided on one side of the sliding seat, a slider being installed on one side of the lifting plate, the lifting plate being slidably installed in the slide rails via the slider, and a driving mechanism being provided between the lifting plate and the sliding seat.

[0005] Preferably, the driving mechanism includes a drive motor and a rotating screw. The drive motor is fixedly installed on one side of the bottom of the sliding seat. The output end of the drive motor is connected to the rotating screw. A transmission block that cooperates with the rotating screw is provided on one side of the lifting plate. The transmission block is threadedly connected to the rotating screw and fixedly connected to the lifting plate.

[0006] Preferably, a groove for mounting a shield is provided on one side of the lifting plate, a first magnet is installed inside the groove, and a second magnet corresponding to the position of the first magnet is provided on one side of the shield.

[0007] Preferably, the shielding plate includes a first movable plate, a second movable plate, and a third movable plate, all of which are square structures.

[0008] Preferably, one corner of the first movable plate is hinged to one side of the second movable plate, and one corner of the third movable plate is hinged to the other side of the second movable plate.

[0009] Preferably, the contact surfaces of the first and second movable plates are provided with a first arc-shaped groove, and the surfaces of the second and third movable plates are provided with a second arc-shaped groove.

[0010] Preferably, a movable block is fixedly provided on one side of both the first movable plate and the third movable plate, and the movable block is slidably connected within the arc-shaped groove.

[0011] Preferably, a limit block is installed on one side of the shield.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, by incorporating a lifting plate, allows for convenient adjustment of the height of the sunshade to accommodate different heights or usage scenarios. When sun or rain protection is needed, the user can operate the drive mechanism to slide the lifting plate up and down along the slide rail, thereby moving the sunshade to the appropriate position. This design is not only simple in structure but also easy to operate, greatly improving the flexibility and convenience of use.

[0014] 2. The shielding plate in this utility model consists of a first movable plate, a second movable plate, and a third movable plate. These movable plates are connected by movable hinges, allowing them to be flexibly unfolded or folded. When a larger shielding area is needed, the user can unfold each movable plate; when not in use, they can be folded up to reduce space occupation. This design makes the shielding mechanism more compact when not in use, facilitating storage and organization. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the shielding mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the front structure of the shielding mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the folding structure of the shielding plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the unfolded structure of the shielding plate of this utility model.

[0020] In the diagram: 1. Wheelchair body; 2. Seat; 3. Backrest; 4. Screening mechanism; 5. Lifting plate; 6. Screening plate; 7. Sliding seat; 8. Slide rail; 9. Slider; 10. Drive motor; 11. Rotating screw; 12. Transmission block; 13. Groove; 14. First magnet; 15. Second magnet; 16. First movable plate; 17. Second movable plate; 18. Third movable plate; 19. First arc-shaped groove; 20. Second arc-shaped groove; 21. Moving block; 22. Limiting block. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 This utility model provides a technical solution for a wheelchair shielding mechanism: it includes a wheelchair body 1, on which a seat 2 and a backrest 3 are provided. A shielding mechanism 4 is installed on the back of the backrest 3. The shielding mechanism 4 includes a lifting plate 5 and a shielding plate 6. One side of the lifting plate 5 is slidably connected to the backrest 3. The shielding plate 6 is installed on one side of the lifting plate 5. The tops of the lifting plate 5 and the shielding plate 6 are movably hinged. A sliding seat 7 is fixedly installed on the back of the backrest 3. Two symmetrically distributed slide rails 8 are provided on one side of the sliding seat 7. A slider 9 is installed on one side of the lifting plate 5. The lifting plate 5 is slidably installed in the slide rails 8 through the slider 9. A driving mechanism is provided between the lifting plate 5 and the sliding seat 7.

[0023] Furthermore, the driving mechanism includes a drive motor 10 and a rotating screw 11. The drive motor 10 is fixedly installed on one side of the bottom of the sliding seat 7. The output end of the drive motor 10 is connected to the rotating screw 11. A transmission block 12 that cooperates with the rotating screw 11 is provided on one side of the lifting plate 5. The transmission block 12 is threadedly connected to the rotating screw 11 and is fixedly connected to the lifting plate 5.

[0024] In this embodiment, when the drive motor 10 starts, its output drives the rotating screw 11 to rotate. Since the transmission block 12 is threadedly connected to the rotating screw 11 and fixedly connected to the lifting plate 5, the rotation of the rotating screw 11 drives the transmission block 12 to move along the length of the rotating screw 11. This movement further drives the lifting plate 5 to slide up and down along the slide rail 8, thereby realizing the lifting function of the baffle 6. Users can easily adjust the height of the baffle 6 by controlling the forward and reverse rotation of the drive motor 10 to adapt to different usage needs.

[0025] Furthermore, a groove 13 for installing a shielding plate 6 is provided on one side of the lifting plate 5, a first magnet 14 is installed inside the groove 13, and a second magnet 15 corresponding to the position of the first magnet 14 is provided on one side of the shielding plate 6.

[0026] In this embodiment, when the baffle plate 6 is installed in the groove 13 of the lifting plate 5, the first magnet 14 and the second magnet 15 will attract each other. This magnetic connection not only ensures the stability of the baffle plate 6.

[0027] Furthermore, the shielding plate 6 includes a first movable plate 16, a second movable plate 17, and a third movable plate 18, all of which are square structures.

[0028] Furthermore, one corner of the first movable plate 16 is movably hinged to one side of the second movable plate 17, and one corner of the third movable plate 18 is movably hinged to the other side of the second movable plate 17.

[0029] In this embodiment, the first movable plate 16, the second movable plate 17, and the third movable plate 18 can be folded and unfolded relative to each other to form a variable-area shielding area. When the area to be shielded is large, the three movable plates can be fully unfolded so that they are on the same plane, thereby providing a larger shielding space. When the area to be shielded is small, one or two of the movable plates can be folded up to reduce the shielding area, adapting to different usage needs. In addition, this design is easy to store and carry, improving the practicality and convenience of the wheelchair shielding mechanism.

[0030] Furthermore, the contact surfaces of the first movable plate 16 and the second movable plate 17 are provided with a first arc-shaped groove 19, and the surfaces of the second movable plate 17 and the third movable plate 18 are provided with a second arc-shaped groove 20.

[0031] In this embodiment, the design of the first arc-shaped groove 19 and the second arc-shaped groove 20 not only increases the connection stability between the movable plates, but also makes the folding and unfolding process smoother. When the first movable plate 16 and the second movable plate 17 or the second movable plate 17 and the third movable plate 18 are folded relative to each other, the arc-shaped grooves can guide them to move along a specific trajectory, avoiding damage or jamming caused by improper operation.

[0032] Furthermore, a movable block 21 is fixedly provided on one side of both the first movable plate 16 and the third movable plate 18, and the movable block 21 is slidably connected within the arc-shaped groove.

[0033] Furthermore, a limit block 22 is installed on one side of the shield 6.

[0034] In this embodiment, the limiting block 22 is used to restrict the rotation of the baffle plate 6 so that the baffle plate 6 can maintain a horizontal position.

[0035] Working principle: When the position of the baffle 6 needs to be adjusted, the user can start the drive motor 10. The output end of the drive motor 10 drives the rotating screw 11 to rotate. Since the transmission block 12 is threadedly connected to the rotating screw 11 and is fixedly connected to the lifting plate 5, the rotation of the rotating screw 11 will drive the transmission block 12 to move, thereby causing the lifting plate 5 to slide up and down within the slide rail 8. The up and down sliding of the lifting plate 5 will cause the baffle 6 to move up and down together, thereby adjusting the height position of the baffle 6.

[0036] After the lifting plate 5 moves to the appropriate position, the shielding plate 6 can be manually flipped out, so that the shielding plate 6 rotates 270°. At this time, the limiting block 22 contacts one side of the lifting plate 5, so that the shielding plate 6 can maintain a horizontal position. After the shielding plate 6 is positioned, the first movable plate 16 and the third movable plate 18 can be rotated in sequence. By sliding the moving block 21 in the first arc groove 19 and the second arc groove 20, the first movable plate 16, the second movable plate 17 and the third movable plate 18 can be relatively unfolded or folded, thereby adjusting the shielding area.

[0037] 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 process, method, article, or apparatus.

[0038] 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. A wheelchair shielding mechanism, comprising a wheelchair body (1), characterized in that: The wheelchair body (1) is provided with a seat (2) and a backrest (3). A shielding mechanism (4) is installed on the back of the backrest (3). The shielding mechanism (4) includes a lifting plate (5) and a shielding plate (6). One side of the lifting plate (5) is slidably connected to the backrest (3). The shielding plate (6) is installed on one side of the lifting plate (5). The top of the lifting plate (5) and the shielding plate (6) are movably hinged. A sliding seat (7) is fixedly installed on the back of the backrest (3). Two symmetrically distributed slide rails (8) are provided on one side of the sliding seat (7). A slider (9) is installed on one side of the lifting plate (5). The lifting plate (5) is slidably installed in the slide rail (8) through the slider (9). A driving mechanism is provided between the lifting plate (5) and the sliding seat (7).

2. The wheelchair shielding mechanism according to claim 1, characterized in that, The driving mechanism includes a drive motor (10) and a rotating screw (11). The drive motor (10) is fixedly installed on one side of the bottom of the sliding seat (7). The output end of the drive motor (10) is connected to the rotating screw (11). A transmission block (12) that cooperates with the rotating screw (11) is provided on one side of the lifting plate (5). The transmission block (12) is threadedly connected to the rotating screw (11) and is fixedly connected to the lifting plate (5).

3. The wheelchair shielding mechanism according to claim 2, characterized in that, The lifting plate (5) has a groove (13) on one side for installing the shield plate (6). A first magnet (14) is installed inside the groove (13). A second magnet (15) is provided on one side of the shield plate (6) corresponding to the position of the first magnet (14).

4. A wheelchair shielding mechanism according to claim 3, characterized in that, The shielding plate (6) includes a first movable plate (16), a second movable plate (17) and a third movable plate (18), all of which are square structures.

5. A wheelchair shielding mechanism according to claim 4, characterized in that, One corner of the first movable plate (16) is movably hinged to one side of the second movable plate (17), and one corner of the third movable plate (18) is movably hinged to the other side of the second movable plate (17).

6. A wheelchair shielding mechanism according to claim 5, characterized in that, The contact surfaces of the first movable plate (16) and the second movable plate (17) are provided with a first arc-shaped groove (19), and the surfaces of the second movable plate (17) and the third movable plate (18) are provided with a second arc-shaped groove (20).

7. A wheelchair shielding mechanism according to claim 6, characterized in that, A movable block (21) is fixedly provided on one side of both the first movable plate (16) and the third movable plate (18), and the movable block (21) is slidably connected in the arc groove.

8. A wheelchair shielding mechanism according to claim 7, characterized in that, A limit block (22) is installed on one side of the shield (6).

Images