Multifunctional wheelchair with headrest

Abstract

The multifunctional wheelchair with the headrest comprises a seat frame, the bottom of the seat frame is connected with a front trundle set and a rear trundle set, a foot bracket is hinged to the front side of the seat frame in an overturning mode, a pedal frame is hinged to the front side of the foot bracket in an overturning mode, and a back frame is hinged to the rear side of the seat frame in an overturning mode. The back frame, the seat frame, the foot bracket and the pedal frame can be stretched and flattened to form a bed surface of the bed body, the bed further comprises a high backrest assembly, the front side of the high backrest assembly is connected with a headrest, the high backrest assembly is detachably connected to the upper side of the back frame, or / and the high backrest assembly can be backwards overturned and connected to the upper side of the back frame; the high backrest assembly is additionally arranged on the multifunctional wheelchair, the head of a user can be supported when the user sits on the wheelchair or the wheelchair is independently flattened to form a wheelchair bed, the high backrest assembly can be detached relative to the back frame or folded backwards, and when the high backrest assembly and a nursing bed are combined to form a larger bed body, the length of the wheelchair bed can be reduced, and the stability of the wheelchair bed can be improved.

Description

Technical Field

[0001] The utility model relates to the field of wheelchairs, in particular to a multifunctional wheelchair with a headrest. Background Art

[0002] With the development of technology, elderly care beds are becoming more and more popular. Barrier-free multifunctional nursing beds can effectively overcome the problems of high labor intensity and high labor costs in elderly care, allowing users to enjoy a relaxed life and independently manage their daily lives. The current prior art of nursing beds is shown in Chinese patent document CN202310958476.5, which describes a nursing device combining a wheelchair and a nursing bed and its use method. The device mainly includes a bed frame, on which a bed board is mounted. The area of ​​the bed board is one-half of the area of ​​the interior of the bed frame. A flattenable wheelchair mechanism is provided within the bed frame. Fixed plates are mounted on the rear and front sides of the bed frame. This prior art combines the wheelchair and the bed body as a whole to form a nursing bed, and the wheelchair and bed frame can be used separately. However, when used together, when a user sits on the headrest formed by the flattened wheelchair, the wheelchair's support point is mainly in the middle position, which can easily cause the wheelchair to tip over. Therefore, some nursing beds have other structures that replace the headrest to bear the weight at the headrest position. In this case, it is necessary to improve the prior art so that the high backrest component can be stored to avoid it. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned existing problems and provide a multifunctional wheelchair with a headrest which has a simple and reasonable structure.

[0004] A multifunctional wheelchair with a headrest comprises a seat frame, the bottom of which is connected to a front caster group and a rear caster group, the front side of the seat frame is flip-hinged with a footrest, the front side of the footrest is flip-hinged with a footrest, and the rear side of the seat frame is flip-hinged with a back frame, the back frame, seat frame, footrest and footrest can be stretched flat and form a bed surface, and also includes a high backrest assembly, the front side of the high backrest assembly is connected to a headrest, and the high backrest assembly is detachably connected to the upper side of the back frame, or / and the high backrest assembly can be flipped backwards and connected to the upper side of the back frame.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the high back assembly includes a high back frame, both ends of which are respectively connected to the upper side of the back frame through a folding back assembly, and a high back cushion is sleeved on the high back frame, and the headrest is connected to the front side of the high back cushion.

[0007] As a further solution, the high back frame is further connected to a handrail, which extends outward from the back side of the high back frame, and a brake handle assembly for controlling the rear caster set is connected to the middle of the handrail.

[0008] As a further solution, the back folding device assembly includes an upper hinge support and a lower hinge support, the upper hinge support and the lower hinge support are rotatably hinged on the back side, the upper hinge support is provided with a locking device, and the lower hinge support is provided with a locking mating part matching the locking device.

[0009] As a further solution, the lower hinge support includes a lower connecting tube and a lower folding back, and a limiting groove is formed inside the lower folding back. The upper hinge support includes an upper connecting tube and an upper folding back, and the upper folding back is limited and fitted in the limiting groove; the back sides of the upper folding back and the lower folding back are respectively extended with upper hinge ears and lower hinge ears, and the upper folding back passes through the upper hinge ears and the lower hinge ears through a hinge shaft to achieve rotational articulation with the lower folding back.

[0010] As a further solution, the locking device includes a spring rod inserted into the upper fold back, a return spring sleeved on the small diameter section of the spring rod, an unlocking handle connected to one end of the spring rod, and a self-locking nut for fixing the unlocking handle on the spring rod; the locking mating part includes a pin hole opened on the lower fold back, and the pin hole is plugged into and mated with the large diameter section of the spring rod.

[0011] As a further solution, a back motor assembly is also included, which is movably hinged between the seat frame and the back frame. An avoidance position is provided on the back side of the back frame, and the back motor assembly is placed beside the avoidance position.

[0012] As a further solution, a accommodating cavity is provided in the seat frame, and a toilet pan entrance and exit connected to the accommodating cavity is opened on the rear side of the seat frame. A toilet pan is placed in the accommodating cavity in a push-pull manner through the toilet pan entrance and exit, and the projection range of the toilet pan to the outside forms an avoidance position.

[0013] As a further solution, a seat is connected to the upper side of the seat frame, and a defecation opening is provided on the seat corresponding to the toilet pan opening, and an opening cover is detachably connected to the defecation opening; a back cushion is connected to the front side of the back frame, and a leg bed board of the foot support.

[0014] As a further solution, the back motor assembly includes a motor body and a telescopic push rod, the motor body is rotatably hinged on the rear side of the seat frame, and the telescopic push rod is rotatably hinged on the upper side of the back frame.

[0015] The beneficial effects of the utility model are as follows:

[0016] The multifunctional wheelchair with a headrest of the present invention is provided with a high backrest assembly so that the user's head can be supported when riding or when the wheelchair is flattened into a wheelchair bed. The high backrest assembly can also be disassembled relative to the back frame or folded backwards. When it can be combined with a nursing bed to form a larger bed, the length of the wheelchair bed can be shortened, the center of gravity of the wheelchair bed can be moved toward the middle, the stability of the wheelchair bed can be improved, and the wheelchair bed can be prevented from tipping over due to the load-bearing position of the high backrest assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a wheelchair in this utility model.

[0018] Figure 2 This is a schematic diagram of the exploded structure of the mid-high backrest assembly of the present invention.

[0019] Figure 3 This is a schematic diagram of the overall decomposition structure of the back folding device in the utility model.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the back folding device assembly in the utility model.

[0021] Figure 5 This is a schematic diagram of the avoidance structure of the back motor assembly in the utility model.

[0022] Figure 6 This is a schematic diagram of the exploded structure of the wheelchair in this utility model.

[0023] Figure 7 This is a schematic diagram of the wheelchair structure of the present invention when it is flattened separately.

[0024] Figure 8 This is a schematic diagram of the combined structure of a flattened wheelchair and a nursing bed in the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 8 As shown, a multifunctional wheelchair with a headrest comprises a seat frame 11, the bottom of the seat frame 11 is connected to a front caster group 15 and a rear caster group 16, the front side of the seat frame 11 is flip-hinged with a foot support frame 13, the front side of the foot support frame 13 is flip-hinged with a footrest frame 14, the rear side of the seat frame 11 is flip-hinged with a back frame 12, the back frame 12, the seat frame 11, the foot support frame 13 and the footrest frame 14 can be stretched flat and constitute the bed surface of the bed, and also includes a high backrest assembly 1, the front side of the high backrest assembly 1 is connected to a headrest 2, and the high backrest assembly 1 is detachably connected to the upper side of the back frame 12, or / and, the high backrest assembly 1 can be flipped backwards and connected to the upper side of the back frame 12.

[0027] This multifunctional wheelchair is equipped with a high backrest assembly 1, which supports the user's head when riding or when the wheelchair is flattened into a wheelchair bed. The high backrest assembly 1 can also be disassembled relative to the back frame or folded backward. When it can be combined with a nursing bed to form a larger bed, the length of the wheelchair bed can be shortened, the center of gravity of the wheelchair bed can be moved to the middle, the stability of the wheelchair bed can be improved, and the wheelchair bed can be prevented from tipping over due to the load-bearing position of the high backrest assembly 1.

[0028] The high backrest assembly 1 includes a high backrest frame 3, both ends of which are connected to the upper side of the back frame 12 through a back folding device assembly 4, and a high backrest cushion 5 is sleeved on the high backrest frame 3, and the high backrest cushion 5 can be a beach net. The headrest 2 is connected to the front side of the high backrest cushion 5; the headrest 2 is mainly used to support the user's head, and the headrest 2 can be connected to the high backrest cushion 5 to achieve fixation or detachability.

[0029] The high backrest frame 3 is also connected to a handrail 6, which extends to the back side of the high backrest frame 3, and the middle part of the handrail 6 is connected to a brake handle assembly 7 for controlling the rear caster group 16; the handrail 6 is used to facilitate the caregiver to push the multifunctional wheelchair, and the brake handle assembly 7 is installed on the handrail 6 to facilitate the caregiver's operation and control the start and stop of the wheelchair.

[0030] The back folding device assembly 4 includes an upper hinge support 41 and a lower hinge support 42, and the upper hinge support 41 and the lower hinge support 42 are rotatably hinged on the back side. The upper hinge support 41 is provided with a locking device, and the lower hinge support 42 is provided with a locking matching portion that matches the locking device; the upper hinge support 41 and the lower hinge support 42 are hinged to each other, so that the high backrest assembly 1 can be folded.

[0031] Specifically, the lower hinge support 42 includes a lower connecting tube 421 and a lower folding back 422, a limiting groove 423 is formed inside the lower folding back 422, and the upper hinge support 41 includes an upper connecting tube 411 and an upper folding back 412, and the upper folding back 412 is limited and fit in the limiting groove 423; the back sides of the upper folding back 412 and the lower folding back 422 are respectively extended with an upper hinge ear 413 and a lower hinge ear 424, and the upper folding back 412 passes through the upper hinge ear 413 and the lower hinge ear 424 through a hinge shaft to achieve rotation and articulation with the lower folding back 422;

[0032] When the high backrest assembly 1 is unfolded, the upper folding back 412 is limited and abutted against the limiting groove 423, so that the high backrest assembly 1 cannot be further folded forward.

[0033] The locking device includes a spring pull rod 431 inserted into the upper fold back 412, a return spring 432 sleeved on the small diameter section of the spring pull rod 431, an unlocking handle 433 connected to one end of the spring pull rod 431, and a self-locking nut 434 fixing the unlocking handle 433 to the spring pull rod 431; the locking mating portion includes a pin hole 425 formed on the lower fold back 422, and the pin hole 425 is plugged into the large diameter section of the spring pull rod 431.

[0034] A longitudinal rectangular hole 4331 is provided on the unlocking handle 433, and one end of the spring pull rod 431 is passed through the rectangular hole 4331 and connected to the self-locking nut 434. When the unlocking handle 433 is bent, the spring pull rod 431 has a movable space in the rectangular hole 4331, and limiting plates 4332 extend on the left and right sides of the unlocking handle 433. The limiting plates 4332 are against the left and right sides of the upper folding back 412. The limiting plates 4332 can prevent the unlocking handle 433 from rotating axially along the spring pull rod 431.

[0035] When in use, after the upper folding back 412 is limited and abuts against the limiting groove 423, the spring pull rod 431 protrudes out of the upper folding back 412 under the action of the return spring 432 and is inserted into the pin hole 425, thereby locking the upper hinge support 41 and the lower hinge support 42. When folding the high backrest frame 3, the caregiver manually pries open the unlocking handle 433, and the unlocking handle 433 uses the lever principle to pull the spring pull rod 431 out of the pin hole 425 and retract the upper folding back 412. At this time, the upper hinge support 41 and the lower hinge support 42 are unlocked, and then the high backrest frame 3 is flipped backward.

[0036] It also includes a back motor assembly 8, which is movably hinged between the seat frame 11 and the back frame 12. The back side of the back frame 12 is provided with an avoidance position, and the back motor assembly 8 is placed next to the avoidance position; the back frame is electrically flipped up and down through the back motor assembly 8.

[0037] The seat frame 11 is provided with a accommodating cavity 111, and a toilet pan entrance and exit 112 connected to the accommodating cavity 111 is opened on the rear side of the seat frame 11. A toilet pan 9 is placed in the accommodating cavity 111 through the toilet pan entrance and exit 112 in a push-pull manner, and the projection range of the toilet pan 9 to the outside forms an avoidance position; the back motor assembly 8 is not arranged in the center, thereby forming an avoidance position, so that the toilet pan 9 can be pushed and pulled from the rear side of the seat frame 11, which is convenient for caregivers to operate and has a reasonable layout.

[0038] The upper side of the seat frame 11 is connected to a seat plate 10, and the seat plate 10 is provided with a defecation opening 101 corresponding to the opening of the toilet pan 9, and the defecation opening 101 is detachably connected to an opening cover 17; the front side of the back frame 12 is connected to a back cushion 18 and a leg bed board 19 of the foot support 13; this structure enables the user to defecate in the wheelchair, and only needs to remove the opening cover 17 and defecate into the toilet pan 9 through the defecation opening 101.

[0039] The back motor assembly 8 includes a motor body 81 and a telescopic push rod 82 . The motor body 81 is rotatably hinged on the rear side of the seat frame 11 , and the telescopic push rod 82 is rotatably hinged on the upper side of the back frame 12 .

[0040] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional wheelchair with a headrest, comprising a seat frame (11), wherein the bottom of the seat frame (11) is connected to a front caster group (15) and a rear caster group (16), the front side of the seat frame (11) is hingedly connected to a foot support frame (13), the front side of the foot support frame (13) is hingedly connected to a footrest frame (14), and the rear side of the seat frame (11) is hingedly connected to a back frame (12), and the back frame (12), the seat frame (11), the foot support frame (13) and the footrest frame (14) can be stretched flat and form a bed surface of a bed body, characterized in that: The invention also includes a high backrest assembly (1), wherein the front side of the high backrest assembly (1) is connected to a headrest (2), and the high backrest assembly (1) is detachably connected to the upper side of the back frame (12), or / and the high backrest assembly (1) can be flipped backwards and connected to the upper side of the back frame (12); the high backrest assembly (1) includes a high backrest frame (3), both ends of the high backrest frame (3) are flipped and connected to the upper side of the back frame (12) through a back folding device assembly (4), and a high backrest cushion (5) is sleeved on the high backrest frame (3), and the headrest (2) is connected to the front side of the high backrest cushion (5).

2. The multifunctional wheelchair with a headrest according to claim 1, characterized in that: The high backrest frame (3) is also connected to a handrail (6), the handrail (6) extending toward the back side of the high backrest frame (3), and a brake handle assembly (7) for controlling the rear caster set (16) is connected to the middle of the handrail (6).

3. The multifunctional wheelchair with a headrest according to claim 1, characterized in that: The back folding device assembly (4) comprises an upper hinge support (41) and a lower hinge support (42), wherein the upper hinge support (41) and the lower hinge support (42) are rotatably hinged at the back side, a locking device is provided on the upper hinge support (41), and a locking matching portion matching the locking device is provided on the lower hinge support (42).

4. The multifunctional wheelchair with a headrest according to claim 3, characterized in that: The lower hinge support (42) includes a lower connecting tube (421) and a lower folding back (422), a limiting groove (423) is formed inside the lower folding back (422), and the upper hinge support (41) includes an upper connecting tube (411) and an upper folding back (412), and the upper folding back (412) is limitedly fitted in the limiting groove (423); the back sides of the upper folding back (412) and the lower folding back (422) are respectively extended with an upper hinge ear (413) and a lower hinge ear (424), and the upper folding back (412) passes through the upper hinge ear (413) and the lower hinge ear (424) via a hinge shaft to achieve rotational hinge connection with the lower folding back (422).

5. The multifunctional wheelchair with a headrest according to claim 4, characterized in that: The locking device includes a spring pull rod (431) inserted into the upper fold back (412), a return spring (432) sleeved on the small diameter section of the spring pull rod (431), an unlocking handle (433) connected to one end of the spring pull rod (431), and a self-locking nut (434) fixing the unlocking handle (433) on the spring pull rod (431); the locking fitting portion includes a pin hole (425) provided on the lower fold back (422), and the pin hole (425) is plug-fitted with the large diameter section of the spring pull rod (431).

6. The multifunctional wheelchair with a headrest according to claim 1, characterized in that: The invention also includes a back motor assembly (8), wherein the back motor assembly (8) is movably hinged between the seat frame (11) and the back frame (12), and a back avoidance position is provided on the back side of the back frame (12), and the back motor assembly (8) is placed beside the back avoidance position.

7. The multifunctional wheelchair with a headrest according to claim 6, characterized in that: A accommodating cavity (111) is provided in the seat frame (11), and a toilet pan entrance (112) communicating with the accommodating cavity (111) is provided on the rear side of the seat frame (11). A toilet pan (9) is placed in the accommodating cavity (111) in a push-pull manner through the toilet pan entrance (112), and the projection range of the toilet pan (9) toward the outside forms an avoidance position.

8. The multifunctional wheelchair with a headrest according to claim 7, characterized in that: The upper side of the chair frame (11) is connected to a seat plate (10), and the seat plate (10) is provided with a defecation opening (101) corresponding to the opening of the toilet pan (9), and the defecation opening (101) is detachably connected to an opening cover plate (17); the front side of the back frame (12) is connected to a back cushion (18), and the leg bed plate (19) of the foot support frame (13).

9. The multifunctional wheelchair with a headrest according to claim 6, characterized in that: The back motor assembly (8) includes a motor body (81) and a telescopic push rod (82), wherein the motor body (81) is rotatably hinged on the rear side of the seat frame (11), and the telescopic push rod (82) is rotatably hinged on the upper side of the back frame (12).

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