A seat for a stair-climbing wheelchair

Abstract

The utility model discloses a seat of ladder wheelchair, aims at having two -level adjustment function, and the adjustable amplitude of seat angle is big, and the height of seat is adjustable, its technical scheme: a seat of ladder wheelchair relates to wheelchair movement chassis, including main frame, vice frame, first electric push rod, second electric push rod and ride subassembly, the main frame rotation setting on wheelchair movement chassis, one end of first electric push rod is hinged on wheelchair movement chassis, the other end of first electric push rod is hinged on main frame, and first electric push rod is used for driving main frame rotation, vice frame rotation setting on main frame, one end of second electric push rod is hinged on main frame, the other end of second electric push rod is hinged on vice frame, and second electric push rod is used for driving vice frame rotation, ride subassembly is fixed on vice frame, and belongs to wheelchair technical field.

Description

Technical Field

[0001] This utility model belongs to the field of wheelchair technology, and more specifically, relates to a seat for a ladder wheelchair. Background Technology

[0002] When using a ladder-climbing wheelchair, the seat needs to be adjusted to allow the occupant to maintain a good posture, making it easier for them to observe the road conditions and preventing them from slipping off the seat.

[0003] Existing ladder wheelchairs primarily rely on electric push rods to adjust the seat angle. The seat is hinged to the chassis of the wheelchair, and the seat can be rotated and its angle adjusted by extending or retracting the electric push rod. However, existing ladder wheelchairs generally only have one level of adjustment, limiting the adjustable seat angle and the inability to adjust the seat height. Utility Model Content

[0004] The main purpose of this utility model is to provide a seat for a ladder-climbing wheelchair, which has a two-stage adjustment function, a large range of adjustable angle, and adjustable height.

[0005] According to a first aspect of the present invention, a seat for a ladder wheelchair is provided, relating to a wheelchair motion chassis, including a main frame, a sub-frame, a first electric push rod, a second electric push rod, and a seating component;

[0006] The main frame is rotatably mounted on the wheelchair chassis. One end of the first electric push rod is hinged to the wheelchair chassis, and the other end of the first electric push rod is hinged to the main frame. The first electric push rod is used to drive the main frame to rotate.

[0007] The subframe is rotatably mounted on the main frame. One end of the second electric push rod is hinged to the main frame, and the other end of the second electric push rod is hinged to the subframe. The second electric push rod is used to drive the subframe to rotate.

[0008] The seating assembly is fixed to the subframe.

[0009] In the seat of the aforementioned ladder wheelchair, the main frame includes two main supports arranged at intervals along a first direction. Each main support includes a main longitudinal beam and a main transverse beam. The main longitudinal beam and the main transverse beam form an inverted L-shape. The two main longitudinal beams are connected by a support tube. The end of the main longitudinal beam away from the main transverse beam is rotatably connected to the wheelchair's motion chassis. The subframe is rotatably connected to the end of the main transverse beam away from the main longitudinal beam.

[0010] The first electric push rod and the second electric push rod are respectively hinged to the support tube.

[0011] In the aforementioned ladder wheelchair seat, the subframe includes a base plate and two sub-supports spaced apart along the first direction. Each sub-support includes a secondary longitudinal beam and a secondary transverse beam, which form an inverted L-shape. The base plate is mounted on the two secondary transverse beams, which are rotatably connected to the main transverse beam. The second electric push rod is hinged to the base plate. The seating assembly is fixed to the base plate.

[0012] The seat of the aforementioned ladder wheelchair also includes a connecting rod extending along the first direction, the connecting rod passing through the two secondary crossbeams, and the main crossbeam being rotatably connected to the connecting rod.

[0013] In the seat of the aforementioned ladder wheelchair, the main support is located between the two secondary supports.

[0014] In the seat of the aforementioned ladder wheelchair, the secondary longitudinal beam is located on the side of the main crossbeam away from the connecting rod.

[0015] The seat of the aforementioned ladder wheelchair also includes a guard plate, which is mounted on the two secondary longitudinal beams.

[0016] The seat of the aforementioned ladder wheelchair also includes a foot pedal, which is rotatably mounted at one end of the secondary longitudinal beam away from the secondary cross beam, and the guard plate is provided with a groove for accommodating the foot pedal.

[0017] In the aforementioned ladder wheelchair seat, there are two first electric push rods arranged at intervals along the first direction.

[0018] In the aforementioned ladder wheelchair seat, there are two second electric push rods arranged at intervals along the first direction.

[0019] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0020] In this utility model, a main frame and a sub-frame are provided. The first electric push rod can drive the main frame to rotate, and the second electric push rod can drive the sub-frame to rotate, thereby adjusting the posture of the seating component. Therefore, the first electric push rod and the second electric push rod work together to adjust the seating component to a suitable posture and height. Through this two-stage adjustment, the adjustable angle is also relatively large. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a schematic diagram of the structure of the first embodiment of this utility model when it is used in conjunction with a wheelchair chassis;

[0023] Figure 2This is a schematic diagram of the structure of the first embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure after removing the guard plate and foot pedal in the first embodiment of this utility model.

[0025] The figure labels for each figure are as follows:

[0026] 1. Main frame; 11. Main support; 111. Main longitudinal beam; 112. Main crossbeam; 12. Support tube; 2. Sub-frame; 21. Base plate; 22. Sub-support; 221. Sub-longitudinal beam; 222. Sub-crossbeam; 23. Connecting rod; 3. First electric push rod; 4. Second electric push rod; 5. Seating assembly; 6. Protective plate; 61. Groove; 7. Foot pedal; 100. Wheelchair chassis. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0029] Reference Figures 1 to 3 As shown, a seat for a ladder wheelchair relates to a wheelchair motion chassis 100, including a main frame 1, a sub-frame 2, a first electric push rod 3, a second electric push rod 4, and a seating component 5;

[0030] The main frame 1 is rotatably mounted on the wheelchair motion chassis 100. One end of the first electric push rod 3 is hinged to the wheelchair motion chassis 100, and the other end of the first electric push rod 3 is hinged to the main frame 1. The first electric push rod 3 is used to drive the main frame 1 to rotate.

[0031] The sub-frame 2 is rotatably mounted on the main frame 1. One end of the second electric push rod 4 is hinged to the main frame 1, and the other end of the second electric push rod 4 is hinged to the sub-frame 2. The second electric push rod 4 is used to drive the sub-frame 2 to rotate.

[0032] The seating component 5 is fixed to the subframe 2; the seating component 5 includes a seat cushion, a backrest, and armrests, and the occupant generally sits on the seat cushion;

[0033] The first electric push rod 3 can adjust the angle of the main frame 1, while the second electric push rod 4 can adjust the angle of the sub-frame 2. The two can work together to adjust the angle of the seat. During daily driving, the first electric push rod 3 and the second electric push rod 4 can work together to adjust the height of the seat. When climbing stairs, the first electric push rod 3 and the second electric push rod 4 can work together to adjust the angle of the seat, providing better flexibility and a wider adjustment range.

[0034] In this embodiment, the main frame 1 includes two main supports 11 arranged at intervals along a first direction. Each main support 11 includes a main longitudinal beam 111 and a main transverse beam 112. The main longitudinal beam 111 and the main transverse beam 112 form an inverted L-shape. The two main longitudinal beams 111 are connected by a support tube 12. The end of the main longitudinal beam 111 away from the main transverse beam 112 is rotatably connected to the wheelchair chassis 100. The main longitudinal beam 111 is located at the end of the main transverse beam 112 near the front side of the wheelchair chassis 100.

[0035] The subframe 2 includes a base plate 21 and two sub-supports 22 arranged at intervals along the first direction. The sub-supports 22 include a sub-longitudinal beam 221 and a sub-transverse beam 222. The sub-longitudinal beam 221 and the sub-transverse beam 222 form an inverted L-shape. The base plate 21 is mounted on the two sub-transverse beams 222. The sub-longitudinal beam 221 is located at the end of the sub-transverse beam 222 near the front side of the wheelchair chassis 100.

[0036] The end of the secondary crossbeam 222 away from the secondary longitudinal beam 221 is rotatably connected to the end of the main crossbeam 112 away from the main longitudinal beam 111. One end of the first electric push rod 3 is hinged to the wheelchair chassis 100, and the other end of the first electric push rod 3 is hinged to the support tube 12. One end of the second electric push rod 4 is hinged to the support tube 12, and the other end of the second electric push rod 4 is hinged to the base plate 21. The seating component 5 is fixed to the base plate 21.

[0037] It also includes a connecting rod 23 extending along the first direction, which passes through two secondary crossbeams 222, and the main crossbeam 112 is rotatably connected to the connecting rod 23;

[0038] The first electric push rod 3 extends and retracts, which can drive the main support 11 to rotate. The rotation of the main support 11 will adjust the position of the connecting rod 23, and the connecting rod 23 will drive the auxiliary support 22 to rotate. Then the second electric push rod 4 extends and retracts, and then rotates the auxiliary support 22 to adjust the posture of the seat cushion.

[0039] In this embodiment, the front of the base plate 21 is used to fix the seat cushion, and the back of the base plate 21 is fixedly connected to the secondary crossbeam 222. Therefore, the base plate 21 can act as a limiting structure. After the secondary crossbeam 222 rotates downward to a certain extent, the base plate 21 will contact the main crossbeam 112, thereby limiting the position of the base plate 21 and preventing the base plate 21 from rotating too much.

[0040] In this embodiment, the main support 11 is located between two secondary supports 22 and also includes a protective plate 6. The protective plate 6 is mounted on two secondary longitudinal beams 221. When the protective plate 6 rotates with the secondary supports 22, it will not be interfered with by the main support 11.

[0041] In this embodiment, a foot pedal 7 is also included. The foot pedal 7 is rotatably disposed at one end of the secondary longitudinal beam 221 away from the secondary cross beam 222. The guard plate 6 is provided with a groove 61 for accommodating the foot pedal 7. When not in use, the foot pedal 7 can be folded into the groove 61. When in use, the foot pedal 7 can be rotated out.

[0042] In practice, the foot pedal 7 can be connected to the secondary longitudinal beam 221 by means of a damping pivot, so that the foot pedal 7 can be rotated to any position and stop.

[0043] In this embodiment, there are two first electric push rods 3 arranged at intervals along the first direction. The two first electric push rods 3 cooperate to support the main frame 1 and ensure the strength of the main frame 1.

[0044] Two second electric push rods 4 are arranged at intervals along the first direction. The two second electric push rods 4 cooperate to support the base plate 21, ensuring that the base plate 21 can support the passenger.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A seat for a ladder-climbing wheelchair, relating to a wheelchair motion chassis, characterized in that, It includes the main frame, sub-frame, first electric push rod, second electric push rod, and seating components; The main frame is rotatably mounted on the wheelchair chassis. One end of the first electric push rod is hinged to the wheelchair chassis, and the other end of the first electric push rod is hinged to the main frame. The first electric push rod is used to drive the main frame to rotate. The subframe is rotatably mounted on the main frame. One end of the second electric push rod is hinged to the main frame, and the other end of the second electric push rod is hinged to the subframe. The second electric push rod is used to drive the subframe to rotate. The seating assembly is fixed to the subframe.

2. The seat of the ladder wheelchair according to claim 1, characterized in that, The main frame includes two main supports arranged at intervals along a first direction. Each main support includes a main longitudinal beam and a main transverse beam. The main longitudinal beam and the main transverse beam form an inverted L-shape. The two main longitudinal beams are connected by a support tube. The end of the main longitudinal beam away from the main transverse beam is rotatably connected to the wheelchair chassis. The subframe is rotatably connected to the end of the main transverse beam away from the main longitudinal beam. The first electric push rod and the second electric push rod are respectively hinged to the support tube.

3. The seat of the ladder wheelchair according to claim 2, characterized in that, The subframe includes a base plate and two sub-supports spaced apart along the first direction. Each sub-support includes a sub-longitudinal beam and a sub-transverse beam, which form an inverted L-shape. The base plate is mounted on the two sub-transverse beams, which are rotatably connected to the main transverse beam. The second electric push rod is hinged to the base plate. The seating assembly is fixed to the base plate.

4. The seat of the ladder wheelchair according to claim 3, characterized in that, It also includes a connecting rod extending along the first direction, the connecting rod passing through the two secondary crossbeams, and the main crossbeam being rotatably connected to the connecting rod.

5. The seat of the ladder wheelchair according to claim 3, characterized in that, The main support is located between the two secondary supports.

6. The seat of the ladder wheelchair according to claim 4, characterized in that, The secondary longitudinal beam is located on the side of the main crossbeam away from the connecting rod.

7. The seat of the ladder wheelchair according to claim 3, characterized in that, It also includes a guard plate, which is mounted on the two secondary longitudinal beams.

8. The seat of the ladder wheelchair according to claim 7, characterized in that, It also includes a foot pedal, which is rotatably mounted at one end of the secondary longitudinal beam away from the secondary cross beam, and the guard plate is provided with a groove for accommodating the foot pedal.

9. The seat of the ladder wheelchair according to claim 2, characterized in that, There are two first electric push rods, which are arranged at intervals along the first direction.

10. The seat of the ladder wheelchair according to claim 2, characterized in that, The second electric actuator consists of two rods, which are spaced apart along the first direction.

Images