A multifunctional wheelchair

Abstract

The present invention discloses a multifunctional wheelchair, belonging to the field of wheelchairs. The wheelchair body comprises: a seat frame; a backrest frame, the bottom end of which is hinged with the seat frame; a front wheel, which is arranged below the seat frame and located on the left and right sides of the seat frame; a first connecting rod, which is arranged on the left and right sides of the backrest frame and its top end is hinged with the backrest frame; an arc rocker, the rear end of which is hinged with the bottom end of the first connecting rod; a second connecting rod, which is arranged on the left and right sides of the seat frame and its top end is connected with the seat frame, and the bottom end of the second connecting rod is hinged with the front end of the arc rocker; a gas spring, the top end of which is hinged with the backrest frame and the bottom end of which is hinged with the seat frame, and the gas spring includes a control switch for controlling the operation of the gas spring; a folding mechanism, which is respectively connected with the front wheel and the seat frame to drive the front wheel to swing. The wheelchair can facilitate the elderly and disabled people with limited mobility to independently complete the conversion between the wheelchair and the rocking chair, and overcome the problem of unstable center of gravity when the two states of the wheelchair and the rocking chair are converted when sitting on the wheelchair.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchairs, and in particular to a multifunctional wheelchair. Background Art

[0002] There are a large number of elderly people in China, and the number is still increasing.

[0003] Consumer demand in industries related to the aging population, such as the wheelchair industry, is also gradually increasing.

[0004] At present, the demand for wheelchairs in the market is increasing, but the functions of wheelchairs are still relatively simple. With the development of technology, wheelchairs with rocking chair functions have been launched. However, when using this type of wheelchair, it is difficult for the elderly and disabled with limited mobility to independently complete the transition between the wheelchair and the rocking chair. In addition, there is a problem of unstable center of gravity when sitting on the wheelchair to switch between the two states. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional wheelchair to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0006] The technical solutions adopted to solve the above technical problems are:

[0007] The present invention provides a multifunctional wheelchair, comprising a wheelchair body, wherein the wheelchair body comprises:

[0008] Seat frame;

[0009] A backrest frame, the bottom end of which is hinged to the seat frame;

[0010] Front wheels are disposed below the seat frame, and the front wheels are located on the left and right sides of the seat frame respectively;

[0011] A first connecting rod, which is respectively arranged on the left and right sides of the backrest frame, and the top end of the first connecting rod is hinged to the backrest frame;

[0012] An arc-shaped rocker, the rear end of which is hinged to the bottom end of the first connecting rod;

[0013] A second connecting rod, which is respectively arranged on the left and right sides of the seat frame, the top end of the second connecting rod is connected to the seat frame, and the bottom end of the second connecting rod is hinged to the front end of the arc rocker;

[0014] A gas spring, the top end of which is hinged to the backrest frame, and the bottom end of which is hinged to the seat frame; the gas spring includes a control switch for controlling the operation of the gas spring;

[0015] A folding mechanism is respectively connected to the front wheel and the seat frame to drive the front wheel to swing.

[0016] The backrest frame and the seat frame are hingedly connected, which is conducive to the state conversion between the rocking chair and the wheelchair. The rear end of the arc rocker is connected to the backrest frame through the first connecting rod, and the front end of the arc rocker is connected to the seat frame through the second connecting rod. When the backrest frame swings up and down, the arc rocker is driven to change to the ground or off the ground, so as to facilitate the user to convert the state between the rocking chair and the wheelchair.

[0017] The setting of the gas spring can effectively support the backrest frame, and through the extension and retraction action of the gas spring, the inclination angle of the backrest frame can be adjusted to improve the user's comfort; moreover, when the user leans on the backrest, the gas spring controls the arc-shaped rocker to slowly swing down, and when the user leaves the backrest, the gas spring controls the arc-shaped rocker to slowly swing up. The gas spring design can effectively solve the problem of unstable center of gravity when switching between the two states of wheelchair and rocking chair.

[0018] The front wheels can be retracted and extended through the folding mechanism, so that the front wheels can play a supporting role in the wheelchair state and avoid being an obstruction in the rocking chair state.

[0019] As a further improvement of the above technical solution, the folding mechanism includes:

[0020] A fixing bracket is horizontally arranged, and the fixing bracket is respectively arranged on the left side and the right side of the seat frame, and the fixing bracket is connected to the seat frame; and the fixing bracket is provided with a limiting hole, and the two ends of the limiting hole are arranged front and back;

[0021] A support rod, the bottom end of which is connected to the front wheel, and the top end of which is hinged to the fixed bracket;

[0022] A sliding rod, the axial direction of which is horizontally arranged left and right, the sliding rod is arranged in the limiting hole, and can move forward and backward along the length direction of the limiting hole;

[0023] A connecting member, one end of which is hinged to the support rod, and the other end of which is connected to the sliding rod;

[0024] A locking piece is connected to the fixing bracket, and the locking piece is clamped with the sliding rod.

[0025] The support rod and the fixed bracket are rotatably connected, so that the front wheel can be swung forward and backward, which is helpful for realizing the retracting and extending operation of the front wheel. The connecting piece is hinged to the support rod and the sliding rod respectively, and the sliding rod can slide forward and backward along the limiting hole. The locking piece can be engaged with the sliding rod. When the sliding rod moves to the front end of the limiting hole and is locked by the locking piece, the front wheel can play a supporting role in the wheelchair state; when the sliding rod moves to the rear end of the limiting hole and is locked by the locking piece, the front wheel can be prevented from causing an obstruction in the rocking chair state.

[0026] As a further improvement of the above technical solution, the cross-section of the sliding rod is circular. Designing the cross-section of the sliding rod to be circular can reduce the friction force on the sliding rod in the limiting hole, making it easier for the elderly to operate.

[0027] As a further improvement of the above technical solution, the locking piece is a locking block; the locking block is provided with a hinge shaft which is horizontally arranged on the left and right sides, the hinge shaft is connected to the fixed bracket, and the hinge shaft is located below the limiting hole; the long end of the locking block is provided with an arc-shaped end surface, the long end of the locking block is clamped with the sliding rod, and the long end of the locking block is in contact with the fixed bracket; the short end of the locking block can be in contact with the fixed bracket.

[0028] The lock block is connected to the fixed bracket through a hinge shaft, and the long end of the lock block is provided with an arc-shaped end face, which contacts the circumferential surface of the sliding rod through the arc-shaped end face. At this moment, the long end of the lock block is located above the sliding rod, so that the sliding rod and the lock block are engaged to ensure that the front wheel can play a stable and powerful supporting role. When an upward force is applied to the short end of the lock block, the long end of the lock block can be caused to swing down until it is located below the sliding rod, thereby releasing the blocking effect of the lock block on the sliding rod, facilitating the sliding rod to move to the rear side of the limiting hole, and folding the front wheel; and, because the long end of the lock block is heavier than the short end, the short end of the lock block is caused to abut against the fixed bracket, so that the short end of the lock block blocks the sliding rod, so as to avoid the front wheel swinging down in the rocking chair state and causing an obstruction.

[0029] As a further improvement of the above technical solution, the fixed bracket is provided with a groove with an opening facing downward, the limiting holes are respectively provided on the left and right sides of the groove, and the locking block is provided in the groove. The provision of the groove is conducive to enhancing the connection strength between the sliding rod and the fixed bracket, and also enhancing the connection strength between the locking block and the fixed bracket, thereby enabling the locking block to withstand a large force from the sliding rod for a long time, thereby extending the service life of the folding mechanism.

[0030] As a further improvement of the above technical solution, the locking member is a blocking rod; the blocking rod is vertically arranged, the top of the fixed bracket is provided with a step hole, the blocking rod is arranged in the step hole, and the bottom end of the blocking rod is engaged with the sliding rod. The fixed bracket is provided with a step hole, and the blocking rod is inserted into the step hole from top to bottom. After the blocking rod moves down to the right position, it can block the sliding rod. When it is necessary to release the blocking effect of the blocking rod on the sliding rod, it is only necessary to lift the blocking rod upwards, which is very convenient for the elderly and disabled to operate.

[0031] As a further improvement of the above technical solution, the locking member is a locking screw; the locking screw is vertically arranged, the locking screw is connected to the fixed bracket, and the bottom end of the locking screw is engaged with the sliding rod. A screw hole is arranged on the fixed bracket, and the locking screw is screwed into the screw hole to engage the sliding rod, which can not only play a strong blocking role, but also ensure a strong connection strength between the locking screw and the fixed bracket, preventing the locking screw from being separated from the fixed bracket when the rocking chair or wheelchair is used.

[0032] As a further improvement of the above technical solution, the connecting members are respectively arranged on the left and right sides of the support rod, and the two connecting members are respectively connected to the two ends of the sliding rod. Providing two connecting members can effectively reduce the force on a single connecting member and improve the stability and safety of the folding mechanism.

[0033] As a further improvement of the above technical solution, the control switch is a button, and the control switch is arranged on the left or right side of the seat frame. The button design is adopted and arranged on the left or right side of the seat frame, so that the user can control the gas spring through the button to switch between the two states of wheelchair and rocking chair at will.

[0034] As a further improvement of the above technical solution, the hinge between the gas spring and the backrest frame is arranged in front of the hinge between the first connecting rod and the backrest frame. The connection between the gas spring and the backrest frame is arranged in front of the connection between the first connecting rod and the backrest frame, which can shorten the telescopic distance of the gas spring, which can provide strong support for the user's back on the one hand, and greatly extend the service life of the gas spring on the other hand.

[0035] The beneficial effects of the invention are as follows: the invention provides a multifunctional wheelchair with novel design, stable and reliable structure, and very easy to use. It is intended to facilitate elderly people and disabled people with limited mobility to independently complete the conversion between a wheelchair and a rocking chair, and it effectively overcomes the problem of unstable center of gravity when switching between the two states of a wheelchair and a rocking chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0037] Figure 1 It is a structural stereogram of one embodiment of the multifunctional wheelchair provided by the present invention;

[0038] Figure 2 yes Figure 1 Left view of

[0039] Figure 3 It is a left side view of the structure of the multifunctional wheelchair provided by the present invention in a state where the driving wheels are omitted;

[0040] Figure 4 It is a structural left view of the folding mechanism of the multifunctional wheelchair provided by the present invention in the wheelchair state;

[0041] Figure 5 yes Figure 4 A top view of

[0042] Figure 6 yes Figure 5 Sectional view of section AA;

[0043] Figure 7 It is a structural left view of the folding mechanism of the multifunctional wheelchair provided by the present invention in the rocking chair state;

[0044] Figure 8 yes Figure 7 A top view of

[0045] Fig. 9 yes Figure 8 Sectional view of the middle BB section;

[0046] Fig.10 It is a structural schematic diagram of another embodiment of the folding structure of the multifunctional wheelchair provided by the present invention in the wheelchair state;

[0047] Fig.11 It is a structural stereogram of a fixed bracket in the multifunctional wheelchair provided by the present invention.

[0048] The markings in the accompanying drawings are as follows: 110, back cushion; 120, driving wheel; 130, front wheel; 140, seat cushion; 150, seat frame; 160, back frame; 200, arc rocker; 300, first connecting rod; 400, second connecting rod; 500, folding mechanism; 510, connecting piece; 520, sliding rod; 530, locking block; 540, fixing bracket; 541, groove; 542, mounting hole; 550, limiting hole; 560, support rod; 570, locking screw; 600, gas spring. DETAILED DESCRIPTION

[0049] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0051] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there are descriptions of first, second, and third, they are only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0052] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0053] Reference Figures 1 to 11 , several embodiments of the multifunctional wheelchair of the present invention are given below.

[0054] like Figures 1 to 3 As shown, one embodiment of the present invention provides a multifunctional wheelchair, including a wheelchair body, wherein the wheelchair body includes a seat frame 150, a backrest frame 160, a front wheel 130, a first connecting rod 300, an arc rocker 200, a second connecting rod 400, a gas spring 600 and a folding mechanism 500.

[0055] The seat frame 150 may be formed by connecting a plurality of metal rods such as lean tubes. A cushion 140 is provided on the seat frame 150 to support the user's buttocks.

[0056] The bottom end of the backrest frame 160 is hinged to the seat frame 150, so that the backrest frame 160 can rotate around the connection between the backrest frame 160 and the seat frame 150, which helps to achieve the conversion between the rocking chair and the wheelchair. The backrest frame 160 is provided with a backrest cushion 110 to support the back of the user. The backrest frame 160 can be formed by connecting multiple metal rods such as lean pipes.

[0057] The front wheels 130 are disposed below the seat frame 150, and the front wheels 130 are respectively located on the left and right sides of the seat frame 150. When in the wheelchair state, the front wheels 130 are in contact with the ground, which can provide better support for the wheelchair body, so that the wheelchair body can move stably under the action of the driving wheels 120.

[0058] The first connecting rod 300 is respectively disposed on the left and right sides of the backrest frame 160, and the top end of the first connecting rod 300 is hinged to the backrest frame 160, and the first connecting rod 300 can swing forward or backward relative to the backrest frame 160. The first connecting rod 300 can be a straight tube, and its cross-section shape can be circular.

[0059] The rear end of the arc-shaped rocker 200 is hinged to the bottom end of the first connecting rod 300, and the arc-shaped rocker 200 can swing forward or backward relative to the first connecting rod 300. The cross-sectional shape of the arc-shaped rocker 200 can be circular. Figure 3 As shown, the arc rocker 200 is concave at the top and convex at the bottom. When the bottom surface of the arc rocker 200 contacts the ground, the arc rocker 200 can swing back and forth relative to the bottom surface. One or more connecting rods are arranged between two arc rockers 200 for fixing, which can enhance the structural stability of the arc rocker 200. Of course, multiple arc rockers 200 can be arranged according to actual conditions.

[0060] The second connecting rod 400 is respectively arranged on the left and right sides of the seat frame 150, the top end of the second connecting rod 400 can be connected to the seat frame 150 by welding or a pipe connector, and the second connecting rod 400 is fixed relative to the seat frame 150; the bottom end of the second connecting rod 400 is hinged to the front end of the arc rocker 200, and the arc rocker 200 can swing back and forth relative to the second connecting rod 400. The second connecting rod 400 can be a straight tube, and its cross-sectional shape can be circular.

[0061] A first connecting rod 300 is set between the back frame 160 and the arc rocker 200 for connection, and a second connecting rod 400 is set between the seat frame 150 and the arc rocker 200 for connection. The back and forth swinging of the back frame 160 can drive the arc rocker 200 to change between the grounded and off-ground positions, thereby switching between the rocking chair and wheelchair states.

[0062] The top end (i.e., the telescopic end) of the gas spring 600 is hinged to the back frame 160, and the bottom end (i.e., the cylinder end) of the gas spring 600 is hinged to the seat frame 150. When the telescopic end of the gas spring 600 is extended or retracted, it can drive the back frame 160 to swing forward or backward to complete the conversion between the wheelchair and rocking chair states.

[0063] Preferably, the hinge between the gas spring 600 and the back frame 160 is arranged on the front side of the hinge between the first connecting rod 300 and the back frame 160. Such a design can shorten the telescopic distance of the gas spring 600. On the one hand, it can provide strong support for the user's back, and on the other hand, it can prevent the telescopic end of the gas spring 600 from being excessively extended and easily broken, thereby greatly extending the service life of the gas spring 600.

[0064] The gas spring 600 may be a controllable gas spring. The gas spring 600 includes a control switch for controlling the operation of the gas spring 600. The control switch may be a handle, a button or other. In addition, the control switch is disposed on the left or right side of the seat frame 150. In this embodiment, a button design is adopted and disposed on the left or right side of the seat frame 150, so that the user can control the operation of the gas spring 600 through the button, thereby arbitrarily switching between the two states of the wheelchair and the rocking chair.

[0065] The user leans on the backrest frame 160 and operates a control switch such as a button. By pressing the button, the backrest frame 160 can be driven to slowly swing backward under the action of the gas spring 600, thereby driving the arc rocker 200 to swing down until the arc rocker 200 reaches the ground. At this time, the arc rocker 200 is just tangent to the outer circle of the driving wheel 120. Then release the button, the gas spring 600 will self-lock, so that the arc rocker 200 and the backrest frame 160 are firmly fixed, thereby completing the conversion from the wheelchair state to the rocking chair state.

[0066] Next, when the user's back slightly leans forward, without applying excessive pressure to the backrest frame 160, the button of the gas spring 600 is pressed. At this time, the force of the gas spring 600 is greater than the pressure of the back on the backrest frame 160. Therefore, the telescopic end of the gas spring 600 will automatically extend and drive the backrest frame 160 to swing forward, while driving the rear end of the arc rocker 200 to swing upward, leave the ground, and convert into a wheelchair state. At this time, the driving wheel 120 and the front wheel 130 are on the ground, providing a guarantee for the stability of the wheelchair body.

[0067] The setting of the gas spring 600 can effectively support the backrest frame 160, and through the extension and retraction action of the gas spring 600, the inclination angle of the backrest frame 160 can be adjusted to improve the comfort of the user; moreover, when the user leans on the back cushion 110, the gas spring 600 controls the arc rocker 200 to slowly swing down, and after leaving the back cushion 110, the gas spring 600 controls the arc rocker 200 to slowly swing up. The design of the gas spring 600 can effectively solve the problem of unstable center of gravity when the user is sitting in a wheelchair and switching between the two states of a wheelchair and a rocking chair.

[0068] like Figure 1 , Figures 4 to 11As shown, the folding mechanism 500 is connected to the front wheel 130 and the seat frame 150 respectively, and is used to drive the front wheel 130 to swing. When the wheelchair is in the rocking chair state, the folding mechanism 500 drives the front wheel 130 to swing backward and leave the ground, so as to avoid the front wheel 130 from causing an obstruction to the wheelchair in the rocking chair state. When switched to the wheelchair state, the folding mechanism 500 drives the front wheel 130 to swing forward and reach the ground to effectively support the wheelchair body.

[0069] Specifically, the folding mechanism 500 includes a fixed bracket 540, a support rod 560, a sliding rod 520, a connecting member 510 and a locking member.

[0070] The fixing bracket 540 is arranged horizontally, and the fixing bracket 540 is respectively arranged on the left and right sides of the seat frame 150. The fixing bracket 540 is connected to the seat frame 150 by screws, and the fixing bracket 540 is located below the seat cushion 140. In addition, the fixing bracket 540 is provided with a limiting hole 550, and the two ends of the limiting hole 550 are arranged front and back. The limiting hole 550 may be a waist-shaped hole. The fixing bracket 540 may be made of metal.

[0071] The bottom end of the support rod 560 is connected to the front wheel 130, and the top end of the support rod 560 is hinged to the fixed bracket 540, so that the support rod 560 can swing forward and backward around the hinge between the support rod 560 and the fixed bracket 540. In this embodiment, the support rod 560 is hinged to the front end of the fixed bracket 540. The support rod 560 can be made of metal.

[0072] The sliding rod 520 is arranged horizontally in the axial direction, and is arranged in the limiting hole 550, and can move forward and backward along the length direction of the limiting hole 550. In this embodiment, the cross-sectional shape of the sliding rod 520 is circular, and the sliding rod 520 is adapted to the limiting hole 550. The sliding rod 520 can be made of metal.

[0073] One end of the connecting member 510 is hinged to the support rod 560, and the other end of the connecting member 510 can be connected to the sliding rod 520 by welding or screw connection. In this embodiment, the connecting members 510 are respectively arranged on the left and right sides of the support rod 560, and the two connecting members 510 are respectively connected to the two ends of the sliding rod 520. The connecting member 510 can be made of metal.

[0074] When the sliding rod 520 moves forward along the limiting hole 550, the connecting member 510 moves with the forward movement of the sliding rod 520, and the connecting member 510 drives the supporting rod 560 to swing forward. When the sliding rod 520 moves forward to the right position, the supporting rod 560 swings to the right position, and the front wheel 130 reaches the ground.

[0075] When the sliding rod 520 moves backward along the limiting hole 550 , the connecting member 510 moves with the sliding rod 520 , and the connecting member 510 drives the supporting rod 560 to swing backward, folding and storing the front wheel 130 so that the front wheel 130 leaves the ground.

[0076] The locking member is connected to the fixing bracket 540, and the locking member is engaged with the sliding rod 520. By setting the locking member, the sliding rod 520 is engaged, so that the sliding rod 520 cannot move backward, thereby ensuring that the front wheel 130 can stably and effectively support the entire wheelchair body. Moreover, when the front wheel 130 is in a folded state, the locking member can block the sliding rod 520, preventing the sliding rod 520 from moving forward and causing the front wheel 130 to fall to the ground.

[0077] Specifically, Figure 4 , Figure 6 , Figure 7 , Fig. 9 and Fig.11 As shown, the locking member is a locking block 530. The locking block 530 can be made of metal. The locking block 530 is provided with a hinge shaft horizontally arranged left and right, and the hinge shaft is connected to the fixing bracket 540. The fixing bracket 540 is provided with a mounting hole 542, and the hinge shaft is mounted in the mounting hole 542. In addition, the hinge shaft is located below the limiting hole 550.

[0078] The long end of the locking block 530 is provided with an arc-shaped end surface, which is semicircular and horizontal in its axial direction. The long end of the locking block 530 is engaged with the sliding rod 520, and the long end of the locking block 530 is in contact with the fixing bracket 540. The short end of the locking block 530 can be in contact with the fixing bracket 540.

[0079] When the front wheel 130 touches the ground, the sliding rod 520 moves forward to its position, and then the arc-shaped end surface of the long end of the locking block 530 contacts the circumferential surface of the sliding rod 520. At this moment, the long end of the locking block 530 is located above the sliding rod 520, so that the sliding rod 520 and the locking block 530 are engaged with each other to ensure that the front wheel 130 can play a stable and strong supporting role. Figure 6 shown.

[0080] Due to the arrangement of the arc-shaped end surface and the circular cross-sectional shape of the sliding rod 520, when an upward force is applied to the short end of the locking block 530, the long end of the locking block 530 can overcome the friction between the locking block 530 and the sliding rod 520 and swing down until it is located below the sliding rod 520, thereby releasing the blocking effect of the locking block 530 on the sliding rod 520, and facilitating the sliding rod 520 to move to the rear side of the limiting hole 550, so as to fold the front wheel 130. In addition, since the long end of the locking block 530 is heavier than the short end thereof, under the action of gravity, the locking block 530 swings upward until it contacts the fixed bracket 540 and cannot continue to swing; the short end of the locking block 530 contacts the fixed bracket 540, so that the short end of the locking block 530 blocks the sliding rod 520, so as to prevent the front wheel 130 from swinging downward in the rocking chair state and causing an obstruction, such as Fig. 9 shown.

[0081] Of course, a torsion spring can be provided on the hinge shaft, and by providing the torsion spring, the long end of the locking block 530 can be driven to always contact the fixed bracket 540. When restoring the front wheel 130 in the folded state to the normal use state, the user only needs to swing the support rod 560 forward to move the sliding rod 520 forward in the limiting hole 550, and the sliding rod 520 applies a downward pressure force to the long end of the locking block 530, so that the sliding rod 520 can move forward to the position, and then the long end of the locking block 530 is reset to apply a blocking effect to the sliding rod 520.

[0082] like Fig.11 As shown, in this embodiment, the fixing bracket 540 is provided with a groove 541 with an opening facing downward, the limiting holes 550 are respectively provided on the left and right sides of the groove 541, and the locking block 530 is provided in the groove 541. The provision of the groove 541 is conducive to enhancing the connection strength between the sliding rod 520 and the fixing bracket 540, and also enhances the connection strength between the locking block 530 and the fixing bracket 540, thereby enabling the locking block 530 to withstand a large force from the sliding rod 520 for a long time, thereby extending the service life of the folding mechanism 500.

[0083] like Fig.10 As shown, in some embodiments, the locking member is a locking screw 570. The locking screw 570 is vertically arranged and connected to the fixing bracket 540. Specifically, the fixing bracket 540 is provided with a screw hole. The locking screw 570 is screwed into the screw hole from top to bottom, so that the bottom end of the locking screw 570 can be engaged with the sliding rod 520. By screwing the locking screw 570 in or out, the locking screw 570 can be established to establish the engagement relationship with the sliding rod 520 or the blocking effect of the locking screw 570 on the sliding rod 520 can be released.

[0084] With this design, the locking screw 570 can not only play a strong blocking role, but also ensure a strong connection strength between the locking screw 570 and the fixed bracket, preventing the locking screw from separating from the fixed bracket when used in a rocking chair or wheelchair state.

[0085] In some embodiments, the locking member is a blocking rod, which is vertically arranged, and a step hole is arranged on the top of the fixing bracket 540 , in which the blocking rod is arranged, and the bottom end of the blocking rod is engaged with the sliding rod 520 .

[0086] A step hole is set on the fixed bracket 540, and a blocking rod is inserted into the step hole from top to bottom. After the blocking rod moves down into place, it can block the sliding rod 520. When it is necessary to release the blocking effect of the blocking rod on the sliding rod 520, just lift the blocking rod upwards, which is very convenient for the elderly and disabled to operate.

[0087] The multifunctional wheelchair provided by the present invention is a novel wheelchair product that combines a rocking chair with a wheelchair. The user can switch between the two states of a rocking chair and a wheelchair by himself without the help of others, which is convenient for the elderly who live alone to use, greatly reduces the burden of children taking care of the elderly, and can also help the elderly to take care of themselves and improve their sense of happiness in life. In addition, the entire wheelchair has a stable structure and is easy to operate, which can bring people a new experience.

[0088] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A multifunctional wheelchair, comprising a wheelchair body, characterized in that: The wheelchair body comprises: Seat frame (150); A backrest frame (160), the bottom end of which is hinged to the seat frame (150); a backrest cushion (110) is provided on the backrest frame (160); A front wheel (130) is disposed below the seat frame (150), and the front wheel (130) is located on the left and right sides of the seat frame (150) respectively; A first connecting rod (300) is respectively arranged on the left side and the right side of the backrest frame (160), and the top end of the first connecting rod (300) is hinged to the backrest frame (160); An arc-shaped rocker arm (200), the rear end of which is hinged to the bottom end of the first connecting rod (300); A second connecting rod (400) is respectively arranged on the left and right sides of the seat frame (150), the top end of the second connecting rod (400) is connected to the seat frame (150), and the bottom end of the second connecting rod (400) is hinged to the front end of the arc-shaped rocker (200); A gas spring (600), the top end of which is hinged to the backrest frame (160), and the bottom end of which is hinged to the seat frame (150); the gas spring (600) comprises a control switch for controlling the operation of the gas spring (600); a hinged portion between the gas spring (600) and the backrest frame (160) is arranged at the front side of a hinged portion between the first connecting rod (300) and the backrest frame (160); a folding mechanism (500), which is respectively connected to the front wheel (130) and the seat frame (150) to drive the front wheel (130) to swing; Wherein, the folding mechanism (500) comprises: a fixed bracket (540) which is arranged horizontally, and the fixed bracket (540) is respectively arranged on the left side and the right side of the seat frame (150), and the fixed bracket (540) is connected to the seat frame (150); and the fixed bracket (540) is provided with a limiting hole (550), and the two ends of the limiting hole (550) are arranged front and back; A support rod (560), the bottom end of which is connected to the front wheel (130), and the top end of the support rod (560) is hinged to the fixed bracket (540); The sliding rod (520) is axially arranged horizontally from left to right, and the sliding rod (520) is arranged in the limiting hole (550) and can move forward and backward along the length direction of the limiting hole (550); the cross-sectional shape of the sliding rod (520) is circular; A connecting member (510), one end of which is hinged to the support rod (560), and the other end of the connecting member (510) is connected to the sliding rod (520); a locking member connected to the fixed bracket (540), the locking member being engaged with the sliding rod (520); wherein the locking member is a blocking rod; the blocking rod is arranged vertically, a step hole is provided at the top of the fixed bracket (540), the blocking rod is arranged in the step hole, and the bottom end of the blocking rod is engaged with the sliding rod (520); Alternatively, the locking member is a locking screw (570); the locking screw (570) is vertically arranged, the locking screw (570) is connected to the fixing bracket (540), and the bottom end of the locking screw (570) is clamped with the sliding rod (520); Alternatively, the locking member is a locking block (530); the locking block (530) is provided with a hinge shaft which is horizontally disposed on the left and right sides, the hinge shaft is connected to the fixed bracket (540), and the hinge shaft is located below the limiting hole (550); the long end of the locking block (530) is provided with an arc-shaped end surface, the long end of the locking block (530) is clamped with the sliding rod (520), and the long end of the locking block (530) is in contact with the fixed bracket (540); the short end of the locking block (530) can be in contact with the fixed bracket (540).

2. The multifunctional wheelchair according to claim 1, characterized in that: The fixing bracket (540) is provided with a groove (541) with an opening facing downwards, the limiting holes (550) are respectively provided on the left and right sides of the groove (541), and the locking block (530) is provided in the groove (541).

3. The multifunctional wheelchair according to claim 1 or 2, characterized in that: The connecting members (510) are respectively arranged on the left and right sides of the support rod (560), and the two connecting members (510) are respectively connected to two ends of the sliding rod (520).

4. The multifunctional wheelchair according to claim 3, characterized in that: The control switch is a button, and the control switch is arranged on the left side or the right side of the seat frame (150).

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