Comfortable electric wheelchair seat structure

Abstract

The utility model discloses a comfortable electric wheelchair seat structure which aims to solve the problems that the positions of a cushion, a backrest and a back cushion (headrest) of an existing electric seat are mostly fixed, the shape of a soft cushion is fixed, adjustment can not be carried out according to different body types of users, the comfort is ordinary, and the requirements of the users with different body types can not be met. The turnover mechanism is used for adjusting the inclination angle of the backrest, the driving mechanism is used for adjusting the height of the back cushion, the air cushions are arranged on the two sides of the first soft cushion and the two sides of the second soft cushion, and the air supply mechanism is used for controlling the air inflation amount of the air cushions. A user can adjust the inclination angle of the backrest, the height of the back cushion and the supporting force and wrapping degree of the two sides of the first soft cushion and the second soft cushion according to the body shape and requirements of the user, and then the comfort degree of the electric wheelchair cushion is improved.

Description

Technical Field

[0001] The utility model relates to the field of seats, and more specifically, to a comfortable electric wheelchair seat structure. Background Art

[0002] An electric wheelchair seat refers to the seat part installed on an electric wheelchair, which provides support, comfort and controllability for the user. Generally, an electric wheelchair seat includes a seat cushion, a backrest, a headrest (neck rest), armrests and a controller for controlling the electric wheelchair.

[0003] For existing electric seats, the positions of the seat cushion, backrest and headrest (neck rest) are mostly fixed and the shapes of the cushions are fixed, and they cannot be adjusted according to the different body types of users, so the comfort is average and it cannot meet the needs of users with different body types.

[0004] Based on the above, the purpose of the utility model is to provide a comfortable electric wheelchair seat structure to solve the above problems. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a comfortable electric wheelchair seat structure. The utility model adjusts the inclination angle of the backrest by setting a flipping mechanism, adjusts the height of the headrest by setting a driving mechanism, and also sets air cushions on both sides of the first cushion and the second cushion, and controls the inflation amount of the air cushions through an air supply mechanism, so that the user can adjust the inclination angle of the backrest, the height of the headrest, the supporting force and the wrapping degree on both sides of the first cushion and the second cushion according to his own body type and needs, thereby improving the comfort of the electric wheelchair seat cushion.

[0006] The above technical purpose of the utility model is achieved by the following technical solutions: a comfortable electric wheelchair seat structure, including a seat cushion, a backrest, a headrest, armrests and a controller. The seat cushion includes a base and a first cushion, the backrest includes a back panel and a second cushion, the back panel is rotatably connected to the base, a flipping mechanism for driving the back panel to adjust the inclination angle is arranged on the base, a plurality of limiting rods fixedly connected to one end thereof are arranged on the headrest, the other end of the limiting rod is slidably connected to the back panel, a driving mechanism for driving the headrest to lift is arranged on the base, air cushions are arranged on both sides of the first cushion and the second cushion, and an air supply mechanism for supplying air to the air cushions is arranged on the back panel.

[0007] By adopting the above technical solutions, when the user needs to adjust the seat of the electric wheelchair, the user can, according to his own habits, adjust the tilt angle of the backrest through the flipping mechanism, and according to his own height, drive the headrest to lift through the driving mechanism, so as to support the user's head and neck. The user can also, according to his own body type and preferences, control the inflation volume of the air cushion through the air supply structure, and then control the height of both sides of the first cushion and the second cushion, and further adjust the wrapping degree and the supporting force on both sides of the first cushion and the second cushion according to the needs, which is convenient for the user to adjust as required, and thus improves the comfort of the electric wheelchair seat cushion.

[0008] The present utility model is further configured as: the flipping mechanism includes a first worm whose one end is rotatably connected to the base, the other end of the first worm extends outside the base and is fixedly connected with a first handwheel, a first worm gear meshing with the first worm is rotatably connected inside the base, and the first worm gear is fixedly connected with the back plate.

[0009] The present utility model is further configured as: the driving mechanism includes a second worm whose one end is rotatably connected to the base, the other end of the second worm extends outside the base and is fixedly connected with a second handwheel, a second worm gear meshing with the second worm is rotatably connected inside the base, a lead screw whose one end is fixedly connected with the second worm gear is arranged on the second worm gear, a sleeve is threadedly connected to the other end of the lead screw, and the sleeve is fixedly connected with the headrest.

[0010] The present utility model is further configured as: the air supply mechanism includes an electric air pump, air supply grooves communicating with the air cushions on both sides are arranged on both the base and the back plate, a first three-way valve is arranged at the air outlet of the electric air pump, the air inlet of the first three-way valve is communicated with the electric air pump, second three-way valves are arranged on the other two valve ports of the first three-way valve, the air inlets of the second three-way valves are communicated with the first three-way valve, and the other valve ports of the two second three-way valves are respectively communicated with the air supply grooves on the back plate and the base.

[0011] The present utility model is further configured as: a neck pad is fixedly connected to the headrest.

[0012] The present utility model is further configured as: the air cushion is trapezoidally arranged.

[0013] In summary, the present utility model has the following beneficial effects:

[0014] The present utility model is provided with a flipping mechanism for adjusting the tilt angle of the backrest, a driving mechanism for adjusting the height of the headrest, and air cushions are also arranged on both sides of the first cushion and the second cushion. The inflation volume of the air cushions is controlled through the air supply mechanism, so that the user can adjust the tilt angle of the backrest, the height of the headrest, the supporting force and the wrapping degree on both sides of the first cushion and the second cushion according to his own body type and needs, thereby improving the comfort of the electric wheelchair seat cushion. Description of the Drawings

[0015] Figure 1 Schematic diagram of the overall structure of the utility model patent Figure 1 , showing the overall structure of the utility model;

[0016] Figure 2 Schematic diagram of the overall structure of the utility model patent Figure 2 , showing the front structure of the seat;

[0017] Figure 3 Schematic diagram of the overall structure of the utility model patent Figure 3 , showing the structure of the drive mechanism.

[0018] In the figure: 1, headrest; 2, armrest; 3, controller; 4, base; 5, first cushion; 6, backrest; 7, second cushion; 8, limiting rod; 9, air cushion; 10, first worm; 11, first handwheel; 12, first worm gear; 13, second worm; 14, second handwheel; 15, second worm gear; 16, lead screw; 17, sleeve; 18, electric air pump; 19, air supply groove; 20, first three-way valve; 21, second three-way valve; 22, neck cushion. Specific embodiments

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "set / sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] The present utility model will be described in detail below in conjunction with the accompanying drawings.

[0023] A comfortable electric wheelchair seat structure, as Figures 1 - 3As shown in the figure, it includes a seat cushion, a backrest, a headrest 1, armrests 2 and a controller 3. The seat cushion includes a base 4 and a first soft pad 5. The backrest includes a back panel 6 and a second soft pad 7. The base 4 and the first soft pad 5, the back panel 6 and the second soft pad 7 can all be fixed by bonding. The back panel 6 is rotatably connected to the base 4. A flipping mechanism for driving the back panel 6 to adjust the inclination angle is provided on the base 4. A number of limiting rods 8 with one end fixedly connected thereto are provided on the headrest 1, and the other end of the limiting rod 8 is slidably connected to the back panel 6. A driving mechanism for driving the headrest 1 to lift and lower is provided on the base 4. Air cushions 9 are buried on both sides of the first soft pad 5 and the second soft pad 7. An air supply mechanism for supplying air to the air cushions 9 is provided on the back panel 6.

[0024] Further, the flipping mechanism includes a first worm 10 with one end rotatably connected to the base 4. The other end of the first worm 10 extends outside the base 4 and is fixedly connected to a first handwheel 11. A first worm gear 12 meshing with the first worm 10 is rotatably connected inside the base 4. The first worm gear 12 is fixedly connected to the back panel 6.

[0025] Further, the driving mechanism includes a second worm 13 with one end rotatably connected to the base 4. The other end of the second worm 13 extends outside the base 4 and is fixedly connected to a second handwheel 14. A second worm gear 15 meshing with the second worm 13 is rotatably connected inside the base 4. A lead screw 16 with one end fixedly connected thereto is provided on the second worm gear 15. A sleeve 17 is threadedly connected to the other end of the lead screw 16. The sleeve 17 is fixedly connected to the headrest 1.

[0026] Further, the air supply mechanism includes an electric air pump 18. Air supply grooves 19 communicating with the air cushions 9 on both sides are provided on both the base 4 and the back panel 6. A first three-way valve 20 is provided at the air outlet of the electric air pump 18. The inlet of the first three-way valve 20 is communicated with the electric air pump 18. Second three-way valves 21 are provided on the other two valve ports of the first three-way valve 20. The inlets of the second three-way valves 21 are communicated with the first three-way valve 20. The other valve ports of the two second three-way valves 21 are respectively communicated with the air supply grooves 19 on the back panel 6 and the base 4. The first three-way valve and the second three-way valve are both electric three-way valves. Only two of the three valve blocks in the first three-way valve and the second three-way valve can be in communication with each other at the same time.

[0027] Further, a neck pad 22 is fixedly connected to the headrest 1.

[0028] Further, the air cushion 9 is trapezoidally arranged.

[0029] Working principle: When the user needs to adjust the electric wheelchair seat, according to their own habits, the inclination angle of the backrest can be adjusted through the flipping mechanism. Rotate the first handwheel 11. The first handwheel 11 drives the first worm gear 12 to rotate through the first worm 10. The first worm gear 12 will drive the back panel 6 to rotate synchronously, thereby completing the adjustment of the inclination angle.

[0030] It is also possible to drive the headrest 1 to lift or lower according to one's own height. Rotate the second handwheel 14, and the second handwheel 14 will drive the second worm 13 to drive the second worm gear 15 to rotate. The rotating second worm gear 15 will drive the lead screw 16 to rotate. The rotating lead screw 16 will drive the sleeve 17 to lift or lower. The sleeve 17 will drive the headrest 1 to lift or lower synchronously, so as to adjust the headrest to a suitable height to support the user's head and neck.

[0031] It is also possible to control the inflation volume of the air cushion 9 according to one's own body shape and preference. Supply air to the first three-way valve 20 through the electric air pump 18. The first three-way valve 20 will send the air flow into the air supply groove 19 through the two second three-way valves 21 respectively, so as to supply air to the air cushion 9 in the first cushion or the second cushion until the inflation volume reaches the expectation. When the inflation volume is too large, switch the second three-way valve 21 to make the air supply groove 19 communicate with the empty valve port. At this time, the gas in the air cushion 9 will be discharged through the air supply groove 19 and the second three-way valve, so as to control the height on both sides of the first cushion 5 and the second cushion 7, and adjust the wrapping degree and the supporting force on both sides of the first cushion 5 and the second cushion 7 as required, which is convenient for the user to adjust as needed, and thus improve the comfort of the electric wheelchair seat cushion.

[0032] The above is only the preferred implementation mode of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A comfortable electric wheelchair seat structure, comprising a seat cushion, a backrest, a headrest (1), armrests (2) and a controller (3), characterized in that: The seat cushion includes a base (4) and a first soft pad (5), the backrest includes a back plate (6) and a second soft pad (7), the back plate (6) is rotatably connected to the base (4), a flipping mechanism for driving the back plate (6) to adjust the tilt angle is provided on the base (4), a plurality of limiting rods (8) with one end fixedly connected thereto are provided on the headrest (1), the other end of the limiting rod (8) is slidably connected to the back plate (6), a driving mechanism for driving the headrest (1) to lift and lower is provided on the base (4), air cushions (9) are provided on both sides of the first soft pad (5) and the second soft pad (7), and an air supply mechanism for supplying air to the air cushions (9) is provided on the back plate (6).

2. The comfortable electric wheelchair seat structure according to claim 1, characterized in that: The flipping mechanism includes a first worm (10) with one end rotatably connected to the base (4), the other end of the first worm (10) extends outside the base (4) and is fixedly connected to a first handwheel (11), a first worm gear (12) meshing with the first worm (10) is rotatably connected inside the base (4), and the first worm gear (12) is fixedly connected to the back plate (6).

3. The comfortable electric wheelchair seat structure according to claim 1, characterized in that: The driving mechanism includes a second worm (13) with one end rotatably connected to the base (4), the other end of the second worm (13) extends outside the base (4) and is fixedly connected to a second handwheel (14), a second worm gear (15) meshing with the second worm (13) is rotatably connected inside the base (4), a lead screw (16) with one end fixedly connected thereto is provided on the second worm gear (15), a sleeve (17) is threadedly connected to the other end of the lead screw (16), and the sleeve (17) is fixedly connected to the headrest (1).

4. A comfortable electric wheelchair seat structure according to claim 1, characterized in that: The air supply mechanism includes an electric air pump (18), air supply grooves (19) communicating with the air cushions (9) on both sides are provided on both the base (4) and the back plate (6), a first three-way valve (20) is provided at the air outlet of the electric air pump (18), the inlet of the first three-way valve (20) is communicated with the electric air pump (18), second three-way valves (21) are provided at the other two valve ports of the first three-way valve (20), the inlets of the second three-way valves (21) are communicated with the first three-way valve (20), and the other valve ports of the two second three-way valves (21) are respectively communicated with the air supply grooves (19) on the back plate (6) and the base (4).

5. The structure of a comfortable electric wheelchair seat according to claim 1, wherein: A neck pad (22) is fixedly connected to the headrest (1).

6. The comfortable electric wheelchair seat structure according to claim 1, characterized in that: The air cushion (9) is trapezoidally arranged.

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