An improved multi-functional wheelchair

Abstract

The present invention relates to an improved multifunctional wheelchair, which comprises: a seat, at the bottom of which a walking mechanism is provided, and a grip is provided at a corresponding position; a transfer device, which is arranged on the seat and is used for supporting and transferring a human body so that the buttocks can be moved out of or into the seat. Wherein: the seat comprises a seat plate frame and a back plate frame, and the back plate frame is arranged on one side of the seat plate frame; the transfer device comprises a first transfer mechanism and a second transfer mechanism, the first transfer mechanism is arranged on the front of the back plate frame and is used for supporting and transferring the upper body of the human body; the second transfer mechanism is arranged on the front of the seat plate frame and is used for supporting and transferring the lower body of the human body. The advantages are as follows: the two groups of transfer mechanisms are used to drive the human body to slide on the wheelchair, so that while the human body is supported, the buttocks can be exposed outside the wheelchair as needed, making it possible for patients to defecate and receive buttock care on the wheelchair, and the whole process can be operated by one person, which is convenient and labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an improved multifunctional wheelchair. Background Art

[0002] Wheelchairs have become an important tool for patient rehabilitation or transportation. Some disabled people even rely on wheelchairs to participate in social activities and maintain normal life.

[0003] Inside the hospital, wheelchairs also play a crucial role and are indispensable in many situations. In view of the problem that the wheelchairs currently used in hospitals have a single function and only have the function of transportation, some improved wheelchairs have also emerged on the market. For example, folding functions and lifting functions are added to the wheelchairs, etc. However, the following problems are all ignored. First, patients sitting in wheelchairs for a long time are prone to bedsores, and the buttocks need to be frequently cared for and cleaned. However, the existing wheelchairs cannot achieve the nursing function, resulting in the need for patients to move back and forth between the wheelchair and the nursing table, wasting time. Second, the existing wheelchairs are not convenient for patients to urinate and defecate. If the patient needs to defecate during the wheelchair pushing process, multiple people are required to assist in helping the patient to the washroom. For the elderly or disabled people with inconvenient legs and feet, the process is strenuous. Summary of the Invention

[0004] Based on this, in view of the problem that users cannot perform buttock care and defecation on the wheelchair, it is necessary to provide an improved multifunctional wheelchair on which the buttock care and defecation of patients, the elderly or disabled people can be completed, effectively reducing the work intensity of caregivers and better meeting the needs of wheelchair users and caregivers.

[0005] An improved multifunctional wheelchair, characterized in that it comprises:

[0006] A seat, provided with a traveling mechanism at its bottom and a handle at its corresponding position;

[0007] A conveying device, arranged on the seat, for supporting and conveying the human body so that the buttocks can be moved out of or into the seat, wherein:

[0008] The seat includes a seat plate frame and a back plate frame, and the back plate frame is arranged on one side of the seat plate frame;

[0009] The conveying device further includes an intermediate conveying mechanism and a driving mechanism, the driving mechanism drives the first conveying mechanism, and the first conveying mechanism is connected to the second conveying mechanism through the intermediate conveying mechanism to realize the linkage of the three.

[0010] The above-mentioned improved multifunctional wheelchair, wherein:

[0011] The conveying device further includes an intermediate conveying mechanism. The first conveying mechanism is connected to the second conveying mechanism through the intermediate conveying mechanism to achieve the linkage of the three, and the driving mechanism drives the first conveying mechanism.

[0012] The improved multifunctional wheelchair described above, wherein:

[0013] A cushion cloth is further provided above the seat plate frame, and a first airbag is provided on the cushion cloth;

[0014] A pedal frame is further provided at the corresponding position of the seat. The pedal is connected to the pedal frame through a return spring. The pedal is connected to a second airbag, and the second airbag is communicated with the first airbag. When the first airbag is squeezed, the gas in the first airbag enters the second airbag to cause the second airbag to expand and drive the pedal to flip to the footrest position against the acting force of the return spring. When the squeezing of the first airbag is released, the pedal is reset under the action of the return spring.

[0015] The improved multifunctional wheelchair described above, wherein:

[0016] The pedal frame is connected to the seat plate frame through a first telescopic mechanism.

[0017] The improved multifunctional wheelchair described above, wherein the first telescopic mechanism includes:

[0018] A sliding tube, connected to the pedal frame;

[0019] A sliding rod, one end of which is arranged in the sliding tube so that one end can slide back and forth in the sliding tube, and the other end is connected to the seat plate frame;

[0020] A spiral spring, sleeved on the sliding rod, one end of which is connected to the sliding tube, and the other end of which is connected to the corresponding position of the seat plate frame.

[0021] The improved multifunctional wheelchair described above, wherein:

[0022] The driving mechanism includes:

[0023] A motor, arranged on the back of the backrest frame, and its motor shaft serves as a first rotating shaft;

[0024] The first conveying mechanism includes:

[0025] A first support frame group, including a pair of first support frames, arranged on the front of the backrest frame;

[0026] A second rotating shaft, rotatably connected to one of the first support frames, and connected to the first rotating shaft through a first belt to achieve synchronous rotation with the first rotating shaft;

[0027] The first rotating cylinder has one end sleeved on the second rotating shaft and the other end rotatably connected to another one of the first support frames so as to rotate following the second rotating shaft;

[0028] The second support frame group includes a pair of second support frames and is arranged on one side of the front surface of the seat plate frame close to the back plate frame;

[0029] The third rotating shaft is rotatably connected to one of the second support frames;

[0030] The second rotating cylinder has one end sleeved on the third rotating shaft and the other end rotatably connected to another one of the second support frames. The second rotating cylinder is linked with the first rotating cylinder through a first conveyor belt so that the first conveyor belt conveys the upper body of a human body and drives the third rotating shaft to rotate at the same time;

[0031] The second conveying mechanism includes:

[0032] The third support frame group includes a pair of third support frames and is arranged on the front surface of the seat plate frame close to the second support frame group;

[0033] The fourth support frame group includes a pair of fourth support frames and is arranged on the front surface of the seat plate frame away from the second support frame group;

[0034] The fourth rotating shaft is rotatably connected to one of the third support frames;

[0035] The third rotating cylinder has one end sleeved on the fourth rotating shaft and the other end rotatably connected to another one of the third support frames so as to rotate following the fourth rotating shaft;

[0036] The fourth rotating cylinder has both ends rotatably connected to the corresponding fourth support frames respectively and is linked with the third rotating cylinder through a second conveyor belt so that the second conveyor belt conveys the lower body of a human body;

[0037] The middle conveying mechanism includes: a second belt, which is respectively connected to the third rotating shaft and the fourth rotating shaft to make the fourth rotating shaft and the third rotating shaft rotate synchronously.

[0038] For the above-mentioned improved multi-functional wheelchair, where:

[0039] A first foldable mechanism is respectively arranged in the middle of each of the first support frames, each of the second support frames, each of the third support frames and each of the fourth support frames;

[0040] A universal shaft is respectively arranged in the middle of the first rotating cylinder, the second rotating cylinder, the third rotating cylinder and the fourth rotating cylinder.

[0041] For the above-mentioned improved multi-functional wheelchair, where:

[0042] A set of first fixing frames is provided on the backrest frame, and a backrest cloth is provided on the set of first fixing frames;

[0043] The seat cushion cloth is arranged on the seat board frame through a set of second fixing frames;

[0044] The set of first fixing frames and the set of second fixing frames are respectively connected through a second foldable mechanism;

[0045] The seat board frame is provided with a telescopic structure, and top blocks are respectively arranged on the telescopic structure at positions corresponding to the universal shafts in the middle of each of the second rotating cylinder, the third rotating cylinder, and the fourth rotating cylinder.

[0046] In the above improved multifunctional wheelchair,

[0047] The backrest frame can rotate a certain angle relative to the seat board frame.

[0048] In the above improved multifunctional wheelchair,

[0049] Armrests are respectively arranged on both sides of the seat board frame.

[0050] The above improved multifunctional wheelchair has the following advantages compared with the prior art:

[0051] 1. The human body is driven to slide on the wheelchair through two sets of transmission mechanisms, so that while the human body is supported, the buttocks can be exposed outside the wheelchair as needed. Further, the patient can defecate on the wheelchair and perform buttock care, and the whole process can be operated by one person, which is convenient and labor-saving;

[0052] 2. The automatic flipping of the pedal is realized through a set of airbags on the wheelchair, avoiding the problem of cross-infection caused by the possible spread of bacteria through the hands during the manual flipping process;

[0053] 3. Corresponding foldable mechanisms are provided on the wheelchair frame body, the transmission mechanism, the connecting cloth, etc. On the one hand, the connecting cloth is strongly supported, and on the other hand, the foldability of the wheelchair is realized, which helps to reduce the volume of the wheelchair during storage, and is safe and practical. Brief Description of the Drawings

[0054] Figure 1 It is a side view of the improved multifunctional wheelchair of the present invention;

[0055] Figure 2 It is a schematic connection structure diagram of the seat cushion cloth, the second fixing part and the second foldable mechanism in an embodiment of the improved multifunctional wheelchair of the present invention;

[0056] Figure 3 It is a schematic diagram of the positional relationship between the second conveyor belt and the seat cushion cloth in a top view state of an embodiment of the improved multifunctional wheelchair of the present invention;

[0057] Figure 4 Schematic diagram of the structure of the fourth rotating cylinder and the middle universal shaft in an embodiment of the improved multi-functional wheelchair of the present invention;

[0058] Figure 5 Schematic diagram of the connection structure of the top block, the seat plate frame and the telescopic structure in an embodiment of the improved multi-functional wheelchair of the present invention;

[0059] Figure 6 Schematic diagram of the connection structure of the fourth rotating cylinder, the universal shaft, the fourth support frame and the first foldable mechanism in an embodiment of the improved multi-functional wheelchair of the present invention;

[0060] Figure 7 Schematic diagram of the structure of the second airbag in the non-inflated state in an embodiment of the improved multi-functional wheelchair of the present invention;

[0061] Figure 8 Schematic diagram of the structure of the second airbag in the inflated state in an embodiment of the improved multi-functional wheelchair of the present invention. Detailed implementation manners

[0062] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0063] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "front", "rear", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0064] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0067] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0068] Figure 1An improved multi-functional wheelchair in an embodiment of the present invention is shown, which includes: a seat, a walking mechanism 300 is provided at the bottom thereof, and a grip 400 is provided at the corresponding position; a conveying device is arranged on the seat and is used for supporting and conveying the human body so that the buttocks can move out of or into the seat. Among them: The seat includes: a seat plate frame 100 and a backrest frame 200, and the backrest frame 200 is arranged on one side of the seat plate frame 100; the conveying device includes: a first conveying mechanism 600 and a second conveying mechanism 700. The first conveying mechanism 600 is arranged on the front of the backrest frame 200 and is used for supporting and conveying the upper body of the human body; the second conveying mechanism 700 is arranged on the front of the seat plate frame 100 and is used for supporting and conveying the lower body of the human body. Usually, the walking mechanism 300 includes a pair of front wheels 301 and a pair of rear wheels 302, and armrests 130 are respectively arranged on both sides of the seat plate frame 100; the seat plate frame 100 and the backrest frame 200 are of a frame structure, and the seat plate frame 100 and the backrest frame 200 can be assembled and connected or rotatably connected. In the case of the rotatable connection method, the backrest frame 200 can rotate relative to the seat plate frame 100 by a certain angle so that its angle can be adjusted to adapt to the sitting or lying posture of the human body, making the comfort experience of the patient better when receiving care or defecating. When the improved multi-functional wheelchair of the present invention is used as an ordinary wheelchair, the user normally sits on the wheelchair, specifically on the first conveying mechanism on the seat plate frame 100, with the back against the second conveying mechanism of the backrest frame 200, and the two provide strong support for the user's body. When the user needs to defecate or receive buttock care, due to the inconvenience of the user's legs and feet, the two conveying mechanisms of the first conveying mechanism 600 and the second conveying mechanism can be operated to drive the human body to move on the surface of the wheelchair to Figure 1 the leftward conveyance in, while the human body is being supported, the buttocks can be exposed outside the wheelchair, specifically outside the seat plate frame, and the upper body is still supported by the two conveying mechanisms. At this time, the caregiver can receive buttock care or defecate, and the whole process can be operated by one person, which is convenient and labor-saving. During the process, the user's feet can always be on the pedals or placed on the ground.

[0069] In some embodiments, the first conveying mechanism 600 and the second conveying mechanism 700 can be driven separately. Refer to Figure 1 , in this embodiment, the first conveying mechanism 600 and the second conveying mechanism 700 adopt a linkage mode. Specifically, the conveying device further includes an intermediate conveying mechanism 800 and a driving mechanism 500. The driving mechanism 500 drives the first conveying mechanism, and the first conveying mechanism 600 is connected to the second conveying mechanism 700 through the intermediate conveying mechanism 800 to realize the linkage of the three, further ensuring the stability and synchronization of the conveying process.

[0070] In order to further solve the problem of cross-infection caused by manual adjustment of the pedal and enable the pedal 904 to have the function of automatic retraction and extension, in this embodiment, a seat cushion cloth 120 is further provided above the seat plate frame 100. The seat cushion cloth 120 further provides a comfortable sitting experience for the human body. In order to realize the automatic retraction and extension of the pedal 904, a first airbag 121 is provided on the seat cushion cloth 120; a pedal frame 904 is also provided at the corresponding position of the seat. The pedal 906 is connected to the pedal frame 904 through a return spring 907. Specifically, a through groove is provided on the pedal frame 904, and a pair of return springs 904 are provided. Both ends of the pedal 906 are respectively connected to the through groove through the return springs 904. The pedal 906 is connected to a second airbag 905. Specifically, a push plate 908 is provided on the surface of the pedal 906, and the second airbag 905 is connected through the push plate 908. The second airbag 905 is communicated with the first airbag 121. For example, it can be communicated through an air pipe. When a person sits on the wheelchair, the first airbag 121 is squeezed, and the gas in the first airbag 121 enters the second airbag 905 to cause the second airbag 905 to expand and drive the pedal 906 to flip and flatten to the footrest position against the acting force of the return spring 904. When the person moves away from the wheelchair, the squeezing force on the first airbag 121 is released, and the pedal 906 is reset to the vertical state under the action of the return spring 907, as Figure 7 , 8 shown. When in use, when a person sits on the wheelchair, as Figure 8 shown, the person squeezes the first airbag 121, and the pedal 906 flips to the flat state under the thrust of the second airbag 905. When the user leaves the wheelchair, as Figure 7 shown, the squeezing force of the person on the first airbag 121 disappears, the second airbag 905 contracts, and drives the pedal 906 to return to the horizontal state; it should be noted that usually, the number of pedals 906 provided on the wheelchair is a pair. Correspondingly, the number of the second airbag 905 and the pedal frame 904 and other corresponding structures are also set to the corresponding number.

[0071] To improve the comfort of use, while the buttocks are moved out of the seat, the calves and feet can also be adjusted at a reasonable angle and moved to corresponding positions according to the posture of the human body. In some embodiments, the pedal frame 904 is connected to the seat plate frame 100 through a first telescopic mechanism, and the first telescopic mechanism is used to provide the functions of adjusting the angle and position of the pedal frame 904; as an example: the first telescopic mechanism is a structure that can freely adjust its length; in this embodiment, the first telescopic mechanism includes: a sliding tube 903, which is connected to the pedal frame 904; a sliding rod 902, one end of which is arranged in the sliding tube 903 so that one end can slide back and forth in the sliding tube 903, and the other end is connected to the seat plate frame 100; a spiral spring 901, which is sleeved on the sliding rod 902, one end of which is connected to the sliding tube 903, and the other end of which is connected to the corresponding position of the seat plate frame 100; when in use, when the buttocks are moved out of the seat to the left under the action of the conveyor belt, the positions of the lower body including the legs and feet can be adjusted in position and angle by virtue of the extensible and contractible characteristics of the first telescopic mechanism. Specifically, during the conveying process, the patient exerts a certain thrust on the pedal 906 with the strength of the feet, and the spiral spring 901 can be stretched, and the sliding rod 902 partially extends out of the sliding tube 903 to make the part of the sliding rod 902 exposed outside the sliding tube 903 longer, and the feet can be moved to the left by an appropriate distance to adjust to a more comfortable nursing angle. When the user returns to the sitting position under the action of the conveyor belt after the nursing is completed, the feet are relaxed, and under the pulling force of the spiral spring 901, the sliding rod 902 retracts to the starting position, and the lower body also returns to its original position.

[0072] In this embodiment, the driving mechanism includes: a motor 501 disposed on the back surface of the backrest frame 200, and its motor shaft serves as a first rotating shaft 502; the first transmission mechanism 600 includes: a first support frame group including a pair of first support frames 602 disposed on the front surface of the backrest frame 200; a second rotating shaft 603 rotatably connected to one of the first support frames 602 and connected to the first rotating shaft 502 through a first belt 601 to achieve synchronous rotation with the first rotating shaft 502; a first rotating cylinder 604 with one end sleeved on the second rotating shaft 603 and the other end rotatably connected to the other of the first support frames 602 to rotate following the second rotating shaft 603; a second support frame group including a pair of second support frames 606 disposed on one side of the seat plate frame 100 close to the backrest frame 200; a third rotating shaft 607 rotatably connected to one of the second support frames 606; a second rotating cylinder 608 with one end sleeved on the third rotating shaft 607 and the other end rotatably connected to the other of the second support frames 606, and the second rotating cylinder 608 is linked with the first rotating cylinder 604 through a first conveyor belt 605 to convey the upper body of the human body by the first conveyor belt 605 and drive the third rotating shaft 607 to rotate at the same time; the second transmission mechanism 700 includes: a third support frame group including a pair of third support frames 701 disposed on the front surface of the seat plate frame 100 close to the second support frame group 606; a fourth support frame group including a pair of fourth support frames 705 disposed on the front surface of the seat plate frame 100 away from the second support frame group; a fourth rotating shaft 702 rotatably connected to one of the third support frames 701; a third rotating cylinder 703 with one end sleeved on the fourth rotating shaft 702 and the other end rotatably connected to the other of the third support frames 701 to rotate following the fourth rotating shaft 702; a fourth rotating cylinder 706 rotatably connected to the corresponding fourth support frames 705 at both ends and linked with the third rotating cylinder 703 through a second conveyor belt 704 to convey the lower body of the human body by the second conveyor belt 704. As Figure 3 shown, the second conveyor belt 704 is located above the seat cushion cloth 120; the intermediate transmission mechanism 800 includes: a third belt connecting the third rotating shaft 607 and the fourth rotating shaft 702 respectively to make the fourth rotating shaft 607 and the third rotating shaft 702 rotate synchronously; when it is necessary to care for the patient's buttocks or defecate, the driving motor 501 rotates forward to make the human body slide along with the conveyor belt until the buttocks are exposed and in a lying position. After the care or defecation is completed, the driving motor 501 rotates backward to pull the human body back to the sitting position along with the conveyor belt in the reverse direction; it should be noted that to ensure stable rotation, pulley corresponding to the belt needs to be installed on the surface of the rotating shaft.

[0073] To achieve the foldability of the wheelchair and help reduce the volume of the wheelchair during storage, the corresponding parts need to have the folding function. In one of the embodiments, to enable the first transmission mechanism 600, the second transmission mechanism 700, and the intermediate transmission mechanism 800 to fold correspondingly, as Figure 6As shown, a first foldable mechanism is respectively provided in the middle of each first support frame 602, each second support frame 607, each third support frame 701, and each fourth support frame 705. As an example, the first foldable mechanism can be a hinge; a universal shaft 7061 is respectively provided in the middle of the first rotating cylinder 604, the second rotating cylinder 608, the third rotating cylinder 703, and the fourth rotating cylinder 706. As Figure 4 , 5 , as shown in FIG. 6, that is, each support frame and each rotating cylinder are of a two-stage folding structure. When the wheelchair needs to be folded, the universal shaft 7061 bends synchronously with the first foldable mechanism to realize the folding function of the first transmission mechanism 600, the second transmission mechanism 700, and the intermediate transmission mechanism 800.

[0074] In this embodiment, a set of first fixing frames is provided on the backrest frame 200, and a backrest cloth is provided on the set of first fixing frames, further providing strong support for the human back; the seat cushion cloth 120 is arranged on the seat plate frame 100 through a set of second fixing frames 122. The bending of the backrest cloth and the seat cushion cloth 120 can naturally bend following the folding of the wheelchair. To further improve the sitting feeling of the backrest cloth and the seat cushion cloth 120 so as not to collapse, the set of first fixing frames and the set of second fixing frames 122 are respectively connected through a second foldable mechanism to support the folding function and provide strong support for the connecting cloth at the same time. As Figure 2 shown, the second foldable mechanism can include a first rotating rod 124 and a second rotating rod 125 respectively hinged at corresponding positions of the second fixing frame 122. The first rotating rod 124 intersects with the second rotating rod 125. A guide groove 1241 is provided locally on the first rotating rod 124, and a slider 1251 is slidably provided in the guide groove 1241. The slider 1251 is connected to a corresponding part of the second rotating rod 125.

[0075] To further improve the use safety of the wheelchair, the folding of the seat plate frame 100 can be realized through a telescopic structure 101, and the backrest frame 200 can also be provided with the same telescopic structure. The telescopic structure improves the structural strength of the vehicle body on the one hand and supports the universal shaft 7061 on the other hand. Specifically, as Figure 5 shown, the telescopic structure 101 can adopt a telescopic rod, and a top block 1011 for supporting the universal shaft 7061 is respectively provided on the telescopic structure 101 at positions corresponding to the universal shafts 7061 in the middle of each second rotating cylinder 608, third rotating cylinder 703, and fourth rotating cylinder 706.

[0076] In summary, the present invention drives the human body to slide on the wheelchair through two sets of conveying mechanisms, enabling the buttocks to be exposed outside the wheelchair as needed while the human body is supported, making it possible for patients to defecate and receive buttock care on the wheelchair, and the whole process can be operated by one person, which is convenient and labor-saving; the automatic flipping of the pedal is realized through a set of airbags on the wheelchair, avoiding the problem of cross-infection caused by the possible transmission of bacteria through the hands during the manual flipping process; finally, corresponding folding mechanisms are provided on the wheelchair frame, conveying mechanism, connecting cloth, etc. On the one hand, it provides strong support for the connecting cloth, and on the other hand, it realizes the foldability of the wheelchair, which helps to reduce the volume of the wheelchair during storage, and is safe and practical.

[0077] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0078] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. An improved multi-functional wheelchair, characterized in that, Comprising: A seat, with a walking mechanism provided at its bottom and a handle provided at a corresponding position; A conveying device, arranged on the seat, for supporting and conveying a human body so that the buttocks can move out of or into the seat. Among them: The seat includes: a seat plate frame and a backrest frame, and the backrest frame is arranged on one side of the seat plate frame; The conveying device includes: a first conveying mechanism and a second conveying mechanism. The first conveying mechanism is arranged on the front of the backrest frame for supporting and conveying the upper body of the human body; the second conveying mechanism is arranged on the front of the seat plate frame for supporting and conveying the lower body of the human body; A seat cushion cloth is further provided above the seat plate frame, and a first airbag is provided on the seat cushion cloth; A pedal frame is also provided at a corresponding position of the seat. The pedal frame is connected to a pedal through a return spring. The pedal is connected to a second airbag, and the second airbag is communicated with the first airbag. When the first airbag is squeezed, the gas in the first airbag enters the second airbag to cause the second airbag to expand and drive the pedal to flip to the footrest position against the acting force of the return spring. When the squeezing of the first airbag is released, the pedal is reset under the action of the return spring; The pedal frame is connected to the seat plate frame through a first telescopic mechanism; The first telescopic mechanism includes: A sliding tube, connected to the pedal frame; A sliding rod, with one end arranged in the sliding tube so that one end can slide back and forth in the sliding tube, and the other end is connected to the seat plate frame; A helical spring, sleeved on the sliding rod, with one end connected to the sliding tube and the other end connected to a corresponding position of the seat plate frame.

2. The improved multifunctional wheelchair according to claim 1, characterized in that: The conveying device further includes an intermediate conveying mechanism and a driving mechanism. The driving mechanism drives the first conveying mechanism, and the first conveying mechanism is connected to the second conveying mechanism through the intermediate conveying mechanism to realize the linkage of the three; 3. The improved multifunctional wheelchair according to claim 2, characterized in that: The driving mechanism includes: A motor, arranged on the back of the backrest frame, and its motor shaft serves as a first rotating shaft; The first conveying mechanism includes: A first support frame group, including a pair of first support frames, arranged on the front of the backrest frame; A second rotating shaft, rotatably connected to one of the first support frames and connected to the first rotating shaft through a first belt to realize synchronous rotation with the first rotating shaft; A first rotating cylinder, with one end sleeved on the second rotating shaft and the other end rotatably connected to the other one of the first support frames to rotate following the second rotating shaft; A second support frame group, including a pair of second support frames, arranged on the front of the seat plate frame close to one side of the backrest frame; A third rotating shaft, rotatably connected to one of the second support frames; A second rotating cylinder, with one end sleeved on the third rotating shaft and the other end rotatably connected to the other one of the second support frames. The second rotating cylinder is linked with the first rotating cylinder through a first conveyor belt so that the first conveyor belt conveys the upper body of the human body and drives the third rotating shaft to rotate at the same time; The second conveying mechanism includes: The third support frame group includes a pair of third support frames, which are arranged at the front of the seat plate frame near the second support frame group; The fourth support frame group includes a pair of fourth support frames, which are arranged at the front of the seat plate frame away from the second support frame group; The fourth rotating shaft is rotatably connected to one of the third support frames; One end of the third rotating cylinder is sleeved on the fourth rotating shaft, and the other end is rotatably connected to the other third support frame to rotate following the fourth rotating shaft; Both ends of the fourth rotating cylinder are respectively rotatably connected to the corresponding fourth support frames, and are linked with the third rotating cylinder through a second conveyor belt so that the second conveyor belt conveys the lower body of the human body; The intermediate conveying mechanism includes: a second belt, which is respectively connected to the third rotating shaft and the fourth rotating shaft to make the fourth rotating shaft and the third rotating shaft rotate synchronously.

4. The improved multi-functional wheelchair according to claim 3, wherein: A first foldable mechanism is respectively provided in the middle of each of the first support frames, each of the second support frames, each of the third support frames, and each of the fourth support frames; Cardan shafts are respectively provided in the middle of the first rotating cylinder, the second rotating cylinder, the third rotating cylinder, and the fourth rotating cylinder.

5. The improved multi-functional wheelchair according to claim 4, wherein: A group of first fixing frames are provided on the backrest frame, and a backrest cloth is provided on the group of first fixing frames; The seat cushion cloth is arranged on the seat plate frame through a group of second fixing frames; The group of first fixing frames and the group of second fixing frames are respectively connected through a second foldable mechanism; A telescopic structure is provided on the seat plate frame, and top blocks are respectively provided at positions corresponding to the cardan shafts in the middle of each of the second rotating cylinder, the third rotating cylinder, and the fourth rotating cylinder on the telescopic structure.

6. The improved multi-functional wheelchair according to any one of claims 1 to 5, characterized in that: The backrest frame can rotate relative to the seat plate frame by a certain angle.

7. The improved multi-functional wheelchair according to claim 1, wherein: Armrests are respectively provided on both sides of the seat plate frame.

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