A foldable seat assembly for an electric wheelchair

Abstract

This utility model discloses a foldable seat assembly for electric wheelchairs, including a chassis and a seat panel. A folding support frame is installed between the chassis and the seat panel. The top of the folding support frame is connected to the seat panel, and the bottom of the folding support frame is connected to the chassis. A backrest frame is installed at the rear end of the seat panel, and an armrest frame is installed at the front middle of the backrest frame. The folding support frame includes two sets of support adjustment rods. A lower fixing frame is positioned at the upper end of the chassis where the folding support frame is installed, and an upper fixing frame is positioned at the upper end of the seat panel where the folding support frame is installed. A fifth folding fulcrum and a fourth folding fulcrum are provided between the lower fixing frame and the folding support frame. This foldable seat assembly for electric wheelchairs allows for quick folding of the seat and chassis, is easy to lift and operate, convenient to retract, and saves storage space.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchairs and mobility scooters, and in particular to a foldable seat assembly for electric wheelchairs. Background Technology

[0002] Electric wheelchairs are a type of support device that enables some elderly people to move around. They can be driven manually or automatically by a motor. They are intelligent, high-end mobility devices suitable for the elderly, enabling them to travel at a constant speed on flat ground and up and down slopes. They can also intelligently adjust the seat posture to provide a safe and comfortable travel experience for people with mobility impairments.

[0003] Existing electric wheelchairs have certain drawbacks in use. They generally cannot be folded or retracted, taking up a large area when stored. Even if some can be folded, the folding operation is complicated and cannot be easily and quickly positioned, which has a certain adverse effect on the actual use. To address this, we propose a foldable seat component for electric wheelchairs. Utility Model Content

[0004] Technical problem to be solved: In view of the shortcomings of the prior art, this utility model provides a foldable seat assembly for electric wheelchairs, which can quickly fold the seat and the chassis, is easy to lift and operate, easy to retract, and saves storage space, thus effectively solving the problems in the background art.

[0005] Technical Solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: A foldable seat assembly for an electric wheelchair, comprising a chassis and a seat panel, a folding support frame installed between the chassis and the seat panel, the top of the folding support frame connected to the seat panel, the bottom of the folding support frame connected to the chassis, a backrest frame installed at the rear end of the seat panel, an armrest frame installed at the front end of the middle of the backrest frame, the folding support frame including two sets of support adjustment rods, a lower fixing frame positioned at the upper end of the chassis where the folding support frame is installed, an upper fixing frame positioned at the seat panel where the folding support frame is installed, a fifth folding fulcrum and a fourth folding fulcrum are provided between the lower fixing frame and the folding support frame, a first folding fulcrum, a second folding fulcrum, a third folding fulcrum and an adjustment shaft are provided between the folding support frame and the upper fixing frame, and a fixing device is connected between the folding support frame and the seat panel.

[0006] Preferably, the fastener is mounted on the backrest frame, and a support bracket is installed on the fastener, with a waist-shaped sliding groove provided on the support bracket.

[0007] Preferably, an adjustment frame is positioned on the backrest frame, an adjustment point is provided between the adjustment frame and the backrest frame, and a triangular support point is integrally formed at the end of the armrest frame, and the triangular support point is positioned with the adjustment frame.

[0008] Preferably, the adjusting shaft moves on the waist-shaped slide groove, a limiting plate is installed on the inner side of the fixing device, a limiting bracket is installed on the inner side of the limiting plate, a slot is opened on the limiting bracket, and a lifting rod is engaged on the inner side of the slot.

[0009] Preferably, the folding support frame and the lower fixed frame are rotatably connected via the fifth folding fulcrum and the fourth folding fulcrum, and the folding support frame and the upper fixed frame are rotatably connected via the first folding fulcrum, the second folding fulcrum and the third folding fulcrum, and the adjusting shaft moves smoothly on the waist-shaped slide groove.

[0010] Preferably, the folding support frame is fixed by the inner lifting rod, the limiting bracket and the slot after it is rotated to a certain extent.

[0011] Beneficial Effects: Compared with the prior art, this utility model provides a foldable seat assembly for electric wheelchairs, which has the following beneficial effects: This foldable seat assembly for electric wheelchairs allows for quick folding between the seat and the chassis, is easy to lift and operate, convenient to retract, and saves storage space. The adjusting shaft moves on the waist-shaped slide groove, a limiting plate is installed inside the fixing device, a limiting bracket is installed inside the limiting plate, and a slot is opened on the limiting bracket. The lifting rod is engaged inside the slot. The folding support frame and the lower fixing frame rotate through the fifth folding fulcrum and the fourth folding fulcrum. The folding support frame and the upper fixing frame rotate through the first folding fulcrum, the second folding fulcrum, and the third folding fulcrum. The adjusting shaft moves smoothly on the waist-shaped slide groove. After the folding support frame rotates to a certain extent, it is fixed by the inner lifting rod, the limiting bracket, and the slot. The entire electric wheelchair mobility scooter has a simple structure, is easy to operate, and has a better effect than traditional methods. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a foldable seat assembly for an electric wheelchair according to the present invention.

[0013] Figure 2 This is a schematic diagram of the overall side structure of a foldable seat assembly for an electric wheelchair according to the present invention.

[0014] Figure 3 This is a schematic diagram of the overall bottom structure of a foldable seat assembly for an electric wheelchair according to the present invention.

[0015] Figure 4 This is a structural schematic diagram of section A of a foldable seat assembly for an electric wheelchair according to the present invention.

[0016] Figure 5 This is a partial structural diagram of the limiting bracket in a foldable seat assembly for an electric wheelchair according to this utility model.

[0017] Figure 6 This is a partial structural diagram of the support frame in a foldable seat assembly for an electric wheelchair according to this utility model.

[0018] In the diagram: 1. Chassis; 2. Seat panel; 3. Folding support frame; 4. Backrest frame; 5. Adjustment point; 6. Adjustment bracket; 7. Triangular support point; 8. Armrest frame; 9. Upper fixed frame; 10. First folding fulcrum; 11. Adjustment shaft; 12. Second folding fulcrum; 13. Third folding fulcrum; 14. Fifth folding fulcrum; 15. Lower fixed frame; 16. Fourth folding fulcrum; 17. Limiting bracket; 18. Limiting plate; 19. Lifting rod; 20. Support fixing frame; 21. Waist-shaped slide groove; 22. Support adjusting rod; 23. Fixing device; 24. Slot. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope 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 protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-6 As shown, a foldable seat assembly for an electric wheelchair includes a chassis 1 and a seat 2. A folding support frame 3 is installed between the chassis 1 and the seat 2. The top of the folding support frame 3 is connected to the seat 2, and the bottom of the folding support frame 3 is connected to the chassis 1. A backrest frame 4 is installed at the rear end of the seat 2, and an armrest frame 8 is installed at the front end of the middle of the backrest frame 4. The folding support frame 3 includes two sets of support adjustment rods 22. A lower fixing frame 15 is positioned at the upper end of the chassis 1 where the folding support frame 3 is installed, and an upper fixing frame 9 is positioned at the upper end of the seat 2 where the folding support frame 3 is installed. A fifth folding fulcrum 14 and a fourth folding fulcrum 16 are provided between the lower fixing frame 15 and the folding support frame 3. A first folding fulcrum 10, a second folding fulcrum 12, a third folding fulcrum 13, and an adjustment shaft 11 are provided between the folding support frame 3 and the upper fixing frame 9. A fixing device 23 connects the folding support frame 3 and the seat 2. The seat and chassis can be quickly folded together, making lifting simple, operation convenient, and easy to retract, saving storage space.

[0023] Furthermore, the fastener 23 is installed on the backrest frame 4, and a support frame 20 is installed on the fastener 23. The support frame 20 has a waist-shaped sliding groove 21.

[0024] Furthermore, an adjustment frame 6 is positioned on the backrest frame 4, and an adjustment point 5 is provided between the adjustment frame 6 and the backrest frame 4. A triangular support point 7 is integrally formed at the end of the armrest frame 8, and the triangular support point 7 is positioned with the adjustment frame 6.

[0025] Furthermore, the adjusting shaft 11 moves on the waist-shaped slide groove 21, a limiting plate 18 is installed inside the fixing device 23, a limiting bracket 17 is installed inside the limiting plate 18, a slot 24 is opened on the limiting bracket 17, and a lifting rod 19 is engaged inside the slot 24.

[0026] Furthermore, the folding support frame 3 and the lower fixed frame 15 rotate through the fifth folding fulcrum 14 and the fourth folding fulcrum 16, and the folding support frame 3 and the upper fixed frame 9 rotate through the first folding fulcrum 10, the second folding fulcrum 12 and the third folding fulcrum 13, and the adjusting shaft 11 moves smoothly on the waist-shaped slide groove 21.

[0027] Furthermore, after the folding support frame 3 is rotated to a certain extent, it is fixed by the inner lifting rod 19, the limiting bracket 17 and the slot 24.

[0028] Working principle: The seat and chassis can be quickly folded together. It is easy to lift and operate, easy to retract, and saves storage space. The adjusting shaft 11 moves on the waist-shaped slide groove 21. The fixing plate 18 is installed inside the fixing device 23. The limiting bracket 17 is installed inside the limiting plate 18. The limiting bracket 17 has a slot 24. The lifting rod 19 is engaged inside the slot 24. The folding support frame 3 and the lower fixing frame 15 are rotated through the fifth folding fulcrum 14 and the fourth folding fulcrum 16. The folding support frame 3 and the upper fixing frame 9 are rotated through the first folding fulcrum 10, the second folding fulcrum 12 and the third folding fulcrum 13. The adjusting shaft 11 moves smoothly on the waist-shaped slide groove 21. After the folding support frame 3 rotates to a certain extent, it is fixed by the inner lifting rod 19, the limiting bracket 17 and the slot 24.

[0029] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., 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.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A foldable seat assembly for an electric wheelchair, comprising a chassis (1) and a seat plate (2), characterized in that: A folding support frame (3) is installed between the chassis (1) and the seat plate (2). The top of the folding support frame (3) is connected to the seat plate (2), and the bottom of the folding support frame (3) is connected to the chassis (1). A backrest frame (4) is installed at the rear end of the seat plate (2), and an armrest frame (8) is installed at the front end of the middle part of the backrest frame (4). The folding support frame (3) includes two sets of support adjustment rods (22). A lower fixing frame (15) is positioned at the upper end of the chassis (1) where the folding support frame (3) is installed. An upper fixing frame (9) is positioned on the seat plate (2) at the location where the folding support frame (3) is installed. A fifth folding fulcrum (14) and a fourth folding fulcrum (16) are provided between the lower fixing frame (15) and the folding support frame (3). A first folding fulcrum (10), a second folding fulcrum (12), a third folding fulcrum (13) and an adjusting shaft (11) are provided between the folding support frame (3) and the upper fixing frame (9). A fixing device (23) is connected between the folding support frame (3) and the seat plate (2).

2. The foldable seat assembly for an electric wheelchair according to claim 1, characterized in that: The fastener (23) is installed on the backrest frame (4), and a support frame (20) is installed on the fastener (23). The support frame (20) has a waist-shaped sliding groove (21).

3. The foldable seat assembly for an electric wheelchair according to claim 1, characterized in that: An adjustment frame (6) is positioned on the backrest frame (4), and an adjustment point (5) is provided between the adjustment frame (6) and the backrest frame (4). A triangular support point (7) is integrally formed at the end of the armrest frame (8), and the triangular support point (7) is positioned with the adjustment frame (6).

4. A foldable seat assembly for an electric wheelchair according to claim 1, characterized in that: The adjusting shaft (11) moves on the waist-shaped slide groove (21). A limiting plate (18) is installed inside the fixing device (23). A limiting bracket (17) is installed inside the limiting plate (18). A slot (24) is opened on the limiting bracket (17). A lifting rod (19) is engaged inside the slot (24).

5. A foldable seat assembly for an electric wheelchair according to claim 1, characterized in that: The folding support frame (3) and the lower fixed frame (15) rotate through the fifth folding fulcrum (14) and the fourth folding fulcrum (16). The folding support frame (3) and the upper fixed frame (9) rotate through the first folding fulcrum (10), the second folding fulcrum (12) and the third folding fulcrum (13). The adjusting shaft (11) moves smoothly on the waist-shaped slide groove (21).

6. A foldable seat assembly for an electric wheelchair according to claim 4, characterized in that: After the folding support frame (3) is rotated to a certain extent, it is fixed by the inner lifting rod (19), the limiting bracket (17) and the slot (24).

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