Wheelchair capable of adjusting sitting posture angle

Abstract

The utility model discloses a wheelchair capable of adjusting the angle of a sitting posture, which comprises two bottom rods distributed in parallel, rear wheels are arranged at the rear ends of the bottom rods, front wheels are arranged at the front ends of the bottom rods, a support frame is arranged at the front ends of the bottom rods, the support frame is rotatably connected with a support rod through a first connecting shaft, and the support rod is connected with the bottom rods through a second connecting shaft. A cushion is arranged between the two supporting rods, and the upper surfaces of the rear ends of the supporting rods are rotationally connected with backrest rods through rotating shafts. The angle of the backrest can be adjusted, the angle of the cushion can also be adjusted, therefore, the sitting posture of a patient can be flexibly adjusted, the comfort of the patient can be effectively improved, operation is easy and fast, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheelchairs, and in particular relates to a wheelchair with adjustable sitting angle. Background Art

[0002] The wheelchair is an important tool for rehabilitation. It is not only a means of transportation for the physically disabled and those with limited mobility, but more importantly, it enables them to exercise and participate in social activities with the help of wheelchairs.

[0003] Although the existing wheelchairs have the function of adjusting the backrest angle, they do not have the function of adjusting the seat cushion angle, so that the patient's sitting posture cannot be flexibly adjusted during use, the practicality is poor, and the patient's comfort cannot be improved. Utility Model Content

[0004] The utility model aims to provide a wheelchair with adjustable sitting angle to solve the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a wheelchair with adjustable sitting angle comprises two parallel bottom bars, a rear wheel is installed at the rear end of the bottom bar, a front wheel is installed at the front end of the bottom bar, and a support frame is arranged at the front end of the bottom bar, the support frame is rotatably connected to the support bar through a first connecting shaft, a seat cushion is arranged between the two support rods, the rear end upper surface of the support rod is rotatably connected to the backrest rod through a rotating shaft, a backrest is arranged between the two backrest rods, and the side wall of the backrest rod is rotatably connected to the first gas spring through a rotating shaft, the piston rod end of the first gas spring is rotatably connected to the rear end of the support rod through a rotating shaft, the rear end of the bottom bar is rotatably connected to the second gas spring through a rotating shaft, an arc plate is arranged at the bottom of the support rod, the side wall of the bottom bar is provided with a guide plate slidably connected to the arc plate, and the piston rod end of the second gas spring is rotatably connected to the arc plate through a rotating shaft.

[0006] Preferably, a handle is provided at the top end of the backrest rod, and a first adjustment handle and a second adjustment handle are respectively mounted on the two handles.

[0007] Preferably, the first adjustment handle is connected to two first gas springs, and the second adjustment handle is connected to two second gas springs.

[0008] Preferably, the arc plate and the first connecting shaft have the same center, and a guide groove matching the thickness of the arc plate is provided in the guide plate, the guide groove is an arc structure, and the guide groove and the first connecting shaft have the same center, and the arc plate is slidably connected to the guide groove.

[0009] Preferably, the front wheel is a universal wheel, and the diameter of the rear wheel is larger than the diameter of the front wheel.

[0010] Preferably, a fixing block is provided on the side wall of the arc-shaped plate, and the fixing block is rotatably connected to the end of the piston rod of the second gas spring via a rotating shaft.

[0011] The utility model provides a wheelchair with adjustable sitting angle, which has the following advantages:

[0012] The utility model can not only realize the angle adjustment of the backrest, but also realize the angle adjustment of the seat cushion, so as to realize the flexible adjustment of the patient's sitting posture, which can effectively improve the patient's comfort, and the operation is simple and fast, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 Front view of

[0016] Figure 3 It is a structural schematic diagram of the support frame in the utility model.

[0017] Explanation of markings in the figure: 1. bottom rod; 2. rear wheel; 3. front wheel; 4. support frame; 5. support rod; 6. arc plate; 7. guide plate; 8. seat cushion; 9. backrest rod; 10. first gas spring; 11. handle; 12. first adjustment handle; 13. second adjustment handle; 14. second gas spring; 15. backrest; 16. first connecting shaft; 17. second connecting shaft. DETAILED DESCRIPTION

[0018] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", 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 the embodiments of the present invention 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 cannot be understood as a limitation on the embodiments of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0022] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a wheelchair with adjustable sitting angle of the present invention in conjunction with the accompanying drawings.

[0024] like Figure 1-3As shown, a wheelchair with an adjustable sitting angle of the utility model comprises two parallel bottom bars 1, a rear wheel 2 is installed at the rear end of the bottom bar 1, a front wheel 3 is installed at the front end of the bottom bar 1, the front wheel 3 is a universal wheel, and the diameter of the rear wheel 2 is larger than the diameter of the front wheel 3, a support frame 4 is arranged at the front end of the bottom bar 1, the support frame 4 is rotatably connected to a support rod 5 through a first connecting shaft 16, a seat cushion 8 is arranged between the two support rods 5, a backrest rod 9 is rotatably connected to the upper surface of the rear end of the support rod 5 through a rotating shaft, a backrest 15 is arranged between the two backrest rods 9, and the backrest The side wall of the rod 9 is rotatably connected with the first gas spring 10 through a rotating shaft, the piston rod end of the first gas spring 10 is rotatably connected with the rear end of the support rod 5 through a rotating shaft, the rear end of the bottom rod 1 is rotatably connected with the second gas spring 14 through a rotating shaft, the bottom of the support rod 5 is provided with an arc plate 6, the side wall of the bottom rod 1 is provided with a guide plate 7 slidably connected with the arc plate 6, the piston rod end of the second gas spring 14 is rotatably connected with the arc plate 6 through a rotating shaft, the side wall of the arc plate 6 is provided with a fixed block, and the fixed block is rotatably connected with the piston rod end of the second gas spring 14 through a rotating shaft. The arc plate 6 and the first connecting shaft 16 have the same center of a circle, and a guide groove that matches the thickness of the arc plate 6 is provided in the guide plate 7, the guide groove is an arc structure, and the guide groove and the first connecting shaft 16 have the same center of a circle, the arc plate 6 is slidably connected with the guide groove, and the cooperation between the guide plate 7 and the arc plate 6 plays a role of limiting and guiding the arc plate 6, making the support rod 5 more stable and reliable. A handle 11 is provided at the top of the backrest rod 9, and a first adjustment handle 12 and a second adjustment handle 13 are respectively installed on the two handles 11. The first adjustment handle 12 is connected to the two first gas springs 10, and the second adjustment handle 13 is connected to the two second gas springs 14. By pinching the first adjustment handle 12 by hand, the first gas spring 10 can be controlled to start, so that the backrest rod 9 drives the backrest 15 to rotate with the axis of the second connecting shaft 17 as the center of the circle, so that the angle of the backrest 15 can be flexibly adjusted. By pinching the second adjustment handle 13 by hand, the second gas spring 14 can be controlled to start, so that the arc plate 6 drives the support rod 5 to rotate with the axis of the first connecting shaft 16 as the center of the circle, so as to realize flexible adjustment of the angle of the seat cushion 8, and in combination with the adjustment of the angle of the backrest 15, the patient's sitting angle can be adjusted at will, which greatly improves the patient's comfort, and the adjustment is simple and labor-saving.

[0025] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A wheelchair with adjustable sitting angle, characterized in that: The invention comprises two parallel bottom bars (1), a rear wheel (2) being mounted at the rear end of the bottom bars (1), a front wheel (3) being mounted at the front end of the bottom bars (1), and a support frame (4) being arranged at the front end of the bottom bars (1), the support frame (4) being rotatably connected to a support bar (5) via a first connecting shaft (16), a seat cushion (8) being arranged between the two support bars (5), a backrest bar (9) being rotatably connected to the upper surface of the rear end of the support bar (5) via a rotating shaft, a backrest (15) being arranged between the two backrest bars (9), and the seat cushion (8) being arranged between the two support bars (5). The side wall of the backrest rod (9) is rotatably connected to a first gas spring (10) via a rotating shaft, the piston rod end of the first gas spring (10) is rotatably connected to the rear end of the support rod (5) via a rotating shaft, the rear end of the bottom rod (1) is rotatably connected to a second gas spring (14) via a rotating shaft, the bottom of the support rod (5) is provided with an arc plate (6), the side wall of the bottom rod (1) is provided with a guide plate (7) slidably connected to the arc plate (6), and the piston rod end of the second gas spring (14) is rotatably connected to the arc plate (6) via a rotating shaft.

2. A wheelchair with adjustable sitting angle according to claim 1, characterized in that: A handle (11) is provided at the top end of the backrest rod (9), and a first adjustment handle (12) and a second adjustment handle (13) are respectively mounted on the two handles (11).

3. A wheelchair with adjustable sitting angle according to claim 2, characterized in that: The first adjustment handle (12) is connected to two first gas springs (10), and the second adjustment handle (13) is connected to two second gas springs (14).

4. A wheelchair with adjustable sitting angle according to claim 1, characterized in that: The arc plate (6) and the first connecting shaft (16) are co-centered, and a guide groove matching the thickness of the arc plate (6) is provided in the guide plate (7), the guide groove is an arc-shaped structure, and the guide groove and the first connecting shaft (16) are co-centered, and the arc plate (6) is slidably connected to the guide groove.

5. The wheelchair with adjustable sitting angle according to claim 1, characterized in that: The front wheel (3) is a universal wheel, and the diameter of the rear wheel (2) is larger than the diameter of the front wheel (3).

6. The wheelchair with adjustable sitting angle according to claim 1, characterized in that: A fixing block is provided on the side wall of the arc-shaped plate (6), and the fixing block is rotatably connected to the end of the piston rod of the second gas spring (14) via a rotating shaft.

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