A multifunctional wheelchair

Abstract

This utility model discloses a multifunctional wheelchair, including a main body, a backrest, and a footrest. The main body includes a seat cushion, a folding bracket, a telescopic support mechanism, and wheels. The folding bracket is located below the seat cushion and includes a crossbar, diagonal bars, and several connecting rods. The crossbars extend along the wheelchair's direction of movement and include at least two upper crossbars and at least two lower crossbars. The upper crossbars support the seat cushion, and the lower crossbars connect to the wheels on the left and right sides respectively. At least one set of two diagonal bars are scissor-shaped and movably connected to each other, with the two ends of each diagonal bar connected to the upper and lower crossbars respectively. The telescopic support mechanism connects the backrest and the lower crossbars. By adjusting the length of the telescopic support mechanism, the backrest can be rotated downwards to horizontally connect with the seat cushion or rotated upwards to return to an upright position. The support end of the telescopic support mechanism is located on the folding bracket, allowing the wheelchair to be independent of ground support, facilitating movement and operation by caregivers.

Description

Technical Field

[0001] This utility model relates to the field of nursing equipment technology, specifically to a multifunctional wheelchair. Background Technology

[0002] Currently, the demand for wheelchairs in China has exceeded 3 million units. With the increase in demand for wheelchairs, the styles of wheelchairs have also become more diversified. Among them, wheelchair beds are a branch. As a standard nursing equipment in hospitals, wheelchair beds make it easier for medical staff to transfer users with physical disabilities from wheelchairs to other beds.

[0003] However, most wheelchair beds on the market are more similar in structure to folding beds. For example, the wheelchair bed and medical device with auxiliary transfer function disclosed in patent number CN202120431345.8 mainly consists of three movable bed boards, and its adaptability as a wheelchair is generally limited.

[0004] Among these, there are wheelchair beds that more closely resemble the shape of a wheelchair, such as the folding wheelchair bed with patent number 202223122126.5. This type of bed uses a second telescopic wheel at the armrest position on the backrest of the wheelchair. This second telescopic wheel can rotate relative to the armrest when the armrest is perpendicular to the ground, supporting the backrest of the folding main frame. However, because this second telescopic wheel supports the backrest by resting on the ground, once converted into a bed, the wheelchair bed cannot be moved, limiting its usability. Utility Model Content

[0005] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a multifunctional wheelchair with an effective backrest support structure, so that the wheelchair bed does not rely on ground support and is easy to move.

[0006] The purpose of this utility model is achieved through the following technical solution: a multifunctional wheelchair, including a main body, a backrest located at the rear of the main body, and a footrest located at the front of the main body. The main body includes a seat cushion, a folding bracket, a telescopic support mechanism, and wheels. The folding bracket is located below the seat cushion and includes a crossbar, a diagonal bar, and several connecting rods. The crossbar extends along the direction of wheelchair movement and includes at least two upper crossbars and at least two lower crossbars. The upper crossbars support the seat cushion, and the lower crossbars are respectively connected to the wheels on the left and right sides. At least one set of two diagonal bars are scissor-shaped and movably connected to each other, and the two ends of the set of diagonal bars are respectively connected to the upper and lower crossbars. The upper crossbars drive the lower crossbars and wheels to fold or unfold through the diagonal bars. The telescopic support mechanism is respectively connected to the backrest and the lower crossbars. By adjusting the length of the telescopic support mechanism, the backrest can be controlled to rotate downwards to connect horizontally with the seat cushion or rotate upwards to return to an inclined position.

[0007] Specifically, the telescopic support mechanism is a telescopic rod, which includes a sub-rod and a main rod. The main rod has multiple adjustment holes along the axial direction. The main rod is sleeved on the sub-rod. The sub-rod is provided with an elastic pin. The elastic pin matches the adjustment holes to determine the length of the telescopic rod. One of the sub-rod or the main rod is rotatably connected to the backrest. The other sub-rod or the main rod is connected to the lower crossbar.

[0008] Furthermore, the backrest is located behind the seat cushion, and the backrest includes at least two vertical rods and a backrest surface. The vertical rods are located on the left and right sides of the multifunctional wheelchair and are vertically connected to the lower horizontal rod, so that the vertical rods extend upward from the lower horizontal rod. The backrest surface is made of flexible material, and the vertical rods are connected to its two sides to form the main support surface of the backrest. The telescopic support mechanism is rotatably connected to the vertical rods.

[0009] Furthermore, the backrest also includes an extension plate, which is disposed above the vertical rod and is detachably connected to the vertical rod.

[0010] Specifically, the footrest is located in front of the seat cushion, and there are two footrests, respectively located on the left and right sides of the multifunctional wheelchair; each footrest includes a folding rod, a forward extension rod, and a foot pedal. One end of the folding rod is connected to the lower crossbar via a connecting rod, and the other end of the folding rod is connected to the connecting end of the forward extension rod. The connecting end of the forward extension rod is flush with the seat cushion, and the suspended end of the forward extension rod is connected to the foot pedal. By adjusting the folding rod, the forward extension rod can be controlled to rotate up or down around its connecting end.

[0011] Furthermore, the foot bracket also includes a support plate, and the body of the extension rod is connected to the support plate.

[0012] Furthermore, the main body also includes a toilet bowl, and the seat cushion has an opening that is detachably connected to the toilet bowl, so that the toilet bowl is positioned below the seat cushion.

[0013] Furthermore, the main body also includes two handrails, which are connected to the lower crossbar via connecting rods.

[0014] Furthermore, the armrest is provided with a second crossbar, and the at least two upper crossbars are respectively provided on the left and right sides of the multifunctional wheelchair. The second crossbar is provided on the outside of the upper crossbars, and the second crossbar is provided with a hook, which supports the upper crossbar and limits the minimum height of the upper crossbar.

[0015] Specifically, the main body includes two sets of wheels located on the left and right sides of the multifunctional wheelchair. Each set of wheels includes a main wheel and an auxiliary wheel. The axle of the main wheel is connected to the axle of the auxiliary wheel and the lower crossbar via a connecting rod.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. The support end of the telescopic support mechanism of this utility model is set on the folding bracket, i.e. the wheelchair itself, so that the wheelchair bed does not rely on the ground support. Whether the wheelchair bed can move depends entirely on whether the wheels can move, which is convenient for caregivers to operate.

[0018] 2. The unfolding and folding directions of the wheelchair bed of this utility model are independent of the unfolding and folding directions of the wheelchair itself and do not interfere with each other.

[0019] 3. This utility model has three main forms, including wheelchair use state, wheelchair folding state, and wheelchair bed state. In the wheelchair use state, a commode can also be installed. It has multiple forms and functions, meets the personalized needs of wheelchair users, and has broad market prospects. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a rear view of the present invention.

[0022] Figure 3 This is a bottom-view diagram of the present invention.

[0023] Figure 4 This is another side view of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of this utility model, showing the removal of the seat cushion and extension plate.

[0025] In the picture:

[0026] 10-Main body, 11-Seat cushion, 12-Toilet bowl, 131-Upper crossbar, 132-Lower crossbar, 134-Diagonal bar, 136-Connecting rod, 14-Telescopic support mechanism, 147-Sub-bar, 1470-Elastic pin, 148-Main bar, 1480-Adjusting hole, 152-Main wheel, 154-Auxiliary wheel, 16-Handrail, 163-Second crossbar, 1630-Hook body

[0027] 20-Backrest, 21-Vertical bar, 23-Backrest panel, 25-Extension board, 27-Handle

[0028] 30 - Footrest, 32 - Folding bar, 34 - Extending bar, 36 - Support plate, 38 - Foot pedal. Detailed Implementation

[0029] To facilitate understanding of this utility model, the technical solutions and advantages of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Any mechanisms or methods not elaborated in this utility model can be referred to in the prior art. The specific structures and features of this utility model are illustrated below by way of example and should not constitute any limitation on this utility model. Furthermore, any technical feature mentioned below (including implicit or disclosed features), as well as any technical feature directly shown or implied in the figures, can be arbitrarily combined or deleted among these technical features to form more other embodiments that may not be directly or indirectly mentioned in this utility model. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0030] like Figure 1-5 As shown, the multifunctional wheelchair of this embodiment includes a main body 10, a backrest 20, and a footrest 30. The backrest 20 is located at the rear of the main body 10, and the footrest 30 is located at the front of the main body 10. The main body 10 includes a seat cushion 11, a commode 12, a folding support frame, a telescopic support mechanism 14, two sets of wheels, and two armrests 16. The commode 12 and the folding support frame are located below the seat cushion 11. The telescopic support mechanism 14 is located behind the backrest 20 to support it. The two sets of wheels and the two armrests 16 are respectively located on both sides of the folding support frame.

[0031] Specifically, the folding frame includes four horizontal bars, four diagonal bars 134, and several connecting rods 136. The four horizontal bars extend along the direction of wheelchair movement. Two horizontal bars are at the top, forming upper horizontal bars 131, which are respectively positioned on the left and right sides of the wheelchair. Two horizontal bars are at the bottom, forming lower horizontal bars 132, which are also respectively positioned on the left and right sides of the wheelchair. The four diagonal bars 134 are connected in a scissor-like manner in two groups. The two ends of each group of diagonal bars 134 are vertically connected to the four horizontal bars. The upper end of each diagonal bar 134 is fixedly connected to the upper horizontal bar 131, and the lower end of each diagonal bar 134 is rotatably connected to the lower horizontal bar 132 via a pivot. The two upper horizontal bars 131 support the seat cushion 11, and the two lower horizontal bars 132 connect to the wheels on the left and right sides respectively. When the seat cushion 11 is removed and the upper horizontal bars 131 are pulled upwards, the two diagonal bars 134 rotate and fold relative to each other, causing the wheels on both sides to move inwards, thus folding the wheelchair. Conversely, when the upper horizontal bar 131 is pressed down, the diagonal bar 134 moves in the opposite direction, and the wheels move away from each other.

[0032] In this preferred embodiment, the main body 10 includes two sets of wheels, left and right. Each set of wheels includes a main wheel 152 and an auxiliary wheel 154. The axle of the main wheel 152 is connected to the axle of the auxiliary wheel 154 and the lower crossbar 132 via several connecting rods 136. When the wheelchair is converted into a wheelchair bed, the main wheel 152 and the auxiliary wheel 154 can provide multiple support points for movement.

[0033] The seat cushion 11 is a square plate with an opening, making it U-shaped. The opening is detachably connected to the commode 12 below, making it convenient for the user to relieve themselves in the wheelchair.

[0034] Two armrests 16 are provided on the left and right sides of the seat cushion 11, and the armrests 16 are connected to the lower crossbar 132 by several connecting rods 136. In this preferred embodiment, the armrests 16 are provided with a second crossbar 163, which is provided on the outside of the upper crossbar 131. The second crossbar 163 is provided with a hook 1630, which supports the upper crossbar 131 and limits the minimum height of the upper crossbar 131.

[0035] The backrest 20 is located behind the seat cushion 11. The backrest 20 includes two vertical rods 21, a backrest surface 23, an extension plate 25, and two handles 27. The two vertical rods 21 are vertically connected to two lower horizontal rods 132, extending upwards from the lower horizontal rods 132. The backrest surface 23 is made of flexible material, and its two sides are connected to the vertical rods 21 to form the main support surface of the backrest 20. The extension plate 25 is located above the vertical rods 21 and is detachably connected to the two vertical rods 21. The function of the extension plate 25 is, on the one hand, to increase the height of the backrest 20, and on the other hand, to maintain the distance between the two vertical rods 21 from the upper end of the vertical rods 21, preventing deformation of the backrest 20. The two handles 27 are located behind the two vertical rods 21.

[0036] The telescopic support mechanism 14 is a telescopic rod, comprising a sub-rod 147 and a main rod 148. The main rod 148 has multiple adjusting holes 1480 along its axial direction. The sub-rod 147 is sleeved on the main rod 148, and the sub-rod 147 has an elastic pin 1470. The elastic pin 1470 matches the adjusting holes 1480 to determine the length of the telescopic rod. The main body 10 has two sets of telescopic support mechanisms 14, which are respectively located on the left and right sides of the wheelchair. One end of the telescopic support mechanism 14 is rotatably connected to the vertical rod 21 via a pivot, and the other end of the telescopic support mechanism 14 is connected to the lower horizontal rod 132 via a connecting rod 136. By shortening the telescopic rod, the backrest 20 can be unfolded downwards to make it completely horizontal, forming a wheelchair bed. Conversely, by extending the telescopic rod, the backrest 20 can be restored to an upright position, returning the wheelchair to its normal shape.

[0037] Footrests 30 are positioned in front of the seat cushion 11. Two footrests 30 are located on the left and right sides of the wheelchair, respectively. Each footrest 30 includes a folding rod 32, a forward extension rod 34, a support plate 36, and a foot pedal 38. One end of the folding rod 32 is connected to the lower crossbar 132 via a connecting rod 136, and the other end is connected to one end of the forward extension rod 34, which is flush with the seat cushion 11. The other end of the forward extension rod 34 is suspended diagonally downwards, and this suspended end is connected to the foot pedal 38. The rod body of the forward extension rod 34 is connected to the support plate 36. By adjusting the folding rod 32, the forward extension rod 34 can be rotated upwards around its connecting end to achieve a horizontal position, thus forming a wheelchair bed. Conversely, by adjusting the folding rod 32 in the opposite direction, the forward extension rod 34 can be rotated downwards around its connecting end to restore the wheelchair to its normal position.

[0038] The multifunctional wheelchair in this embodiment has three main modes: wheelchair in use, wheelchair folded, and wheelchair bed.

[0039] In the wheelchair's usage position, the backrest 20 is tilted upwards, forming a seat with the seat cushion 11. The footrest points downwards, providing convenient leg support for the wheelchair user. A commode 12 is installed under the seat cushion 11, allowing the user to relieve themselves directly on the wheelchair. After use, the commode 12 can be removed for cleaning, eliminating the need to transport the user.

[0040] The process of switching the wheelchair from its active state to its folded state involves removing the seat cushion 11 and extension plate 25. The upper crossbar 131, supported by the hook 1630 on the second crossbar 163, is lifted upwards. The two sets of diagonal bars 134 fold and rotate, causing the two sets of wheels on the left and right sides to move towards each other. This folds the wheelchair for easy storage and transportation. This process is reversible.

[0041] The process of switching the wheelchair from its active use mode to a wheelchair bed mode involves adjusting the telescopic rod of the telescopic support mechanism 14 to retract, causing the backrest 20 to rotate downwards until it is horizontally aligned with the seat cushion 11. Then, adjusting the folding rod 32 of the footrest 30 causes it to rotate upwards until it is horizontally aligned with the seat cushion 11, thus forming a wheelchair bed. This process is reversible.

[0042] Compared with existing technologies, the support end of the telescopic support mechanism of the multifunctional wheelchair in this embodiment is set on the folding bracket, i.e., the wheelchair itself. This allows the wheelchair bed to be independent of ground support, and its movement depends entirely on the mobility of the wheels, making it convenient for caregivers to operate. Furthermore, the unfolding and folding directions of the wheelchair bed are independent of the unfolding and folding directions of the wheelchair itself, and they do not interfere with each other.

[0043] The above embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-functional wheelchair, characterized by, The wheelchair includes a main body, a backrest located at the rear of the main body, and a footrest located at the front of the main body. The main body includes a seat cushion, a folding bracket, a telescopic support mechanism, and wheels. The folding bracket is located below the seat cushion and includes a crossbar, diagonal bars, and several connecting rods. The crossbars extend along the direction of wheelchair movement and include at least two upper crossbars and at least two lower crossbars. The upper crossbars support the seat cushion, and the lower crossbars are connected to the wheels on the left and right sides respectively. At least one set of two diagonal bars are scissor-shaped and movably connected to each other, and the two ends of the set of diagonal bars are connected to the upper and lower crossbars respectively. The upper crossbars drive the lower crossbars and wheels to fold or unfold via the diagonal bars. The telescopic support mechanism is connected to the backrest and the lower crossbars respectively. By adjusting the length of the telescopic support mechanism, the backrest can be controlled to rotate downwards to connect horizontally with the seat cushion or rotate upwards to return to an inclined position.

2. The multi-functional wheelchair as claimed in claim 1, wherein The telescopic support mechanism is a telescopic rod, which includes a sub-rod and a main rod. The main rod has multiple adjustment holes along the axial direction. The main rod is sleeved on the sub-rod. The sub-rod is provided with an elastic pin. The elastic pin matches the adjustment holes to determine the length of the telescopic rod. One of the sub-rod or the main rod is rotatably connected to the backrest. The other sub-rod or the main rod is connected to the lower crossbar.

3. The multi-functional wheelchair as claimed in claim 2, wherein The backrest is located behind the seat cushion and includes at least two vertical rods and a backrest surface. The vertical rods are located on the left and right sides of the multifunctional wheelchair and are vertically connected to the lower horizontal rod, so that the vertical rods extend upward from the lower horizontal rod. The backrest surface is made of flexible material and is connected to the vertical rods on both sides to form the main support surface of the backrest. The telescopic support mechanism is rotatably connected to the vertical rods.

4. The multi-functional wheelchair of claim 3, wherein, The backrest also includes an extension plate, which is disposed above the vertical rod and is detachably connected to the vertical rod.

5. The multi-functional wheelchair as claimed in claim 1, wherein The footrests are located in front of the seat cushion. There are two footrests, one on each side of the multifunctional wheelchair. Each footrest includes a folding rod, a forward extension rod, and a foot pedal. One end of the folding rod is connected to the lower crossbar via a connecting rod, and the other end of the folding rod is connected to the connecting end of the forward extension rod. The connecting end of the forward extension rod is flush with the seat cushion, and the suspended end of the forward extension rod is connected to the foot pedal. By adjusting the folding rod, the forward extension rod can be controlled to rotate up or down around its connecting end.

6. The multi-functional wheelchair of claim 5, wherein, The foot bracket also includes a support plate, and the support plate is connected to the body of the extension rod.

7. The multi-functional wheelchair of claim 1, wherein, The main body also includes a toilet bowl, and the seat cushion has an opening that is detachably connected to the toilet bowl, so that the toilet bowl is positioned below the seat cushion.

8. The multi-functional wheelchair of claim 1, wherein, The main body also includes two handrails, which are connected to the lower crossbar via connecting rods.

9. The multi-functional wheelchair of claim 8, wherein, The armrest is provided with a second crossbar, and the at least two upper crossbars are respectively provided on the left and right sides of the multifunctional wheelchair. The second crossbar is provided on the outside of the upper crossbars and has a hook body. The hook body supports the upper crossbar and limits the minimum height of the upper crossbar.

10. The multi-functional wheelchair of claim 1, wherein, The main body comprises two groups of wheels on the left and right sides of the multifunctional wheelchair, each group of wheels comprising a main wheel and an auxiliary wheel, and the rotation shaft of the main wheel is connected to the rotation shaft of the auxiliary wheel and the lower cross bar through a connecting rod respectively.

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