Novel wheelchair device for assisting old people in safe defecation

Abstract

The invention discloses a novel wheelchair device for assisting old people in safely defecating, and relates to the technical field of medical instruments. The invention provides a novel wheelchair device for assisting old people in safely defecating, which comprises a wheelchair main body and a wheelchair body, the two dynamic adjusting pedal units are symmetrically arranged at the front ends of the bottoms of the two sides of the wheelchair body in a sliding mode; the dynamic rotary shielding unit is arranged at the front end of the wheelchair main body and comprises a rear-end air bag; the dynamic telescopic adjusting unit comprises a push-pull mechanism, a side end air bag, a push rod, a telescopic plate and an adjusting air bag; the push-pull mechanism is connected with a rear-end airbag, one end of the push rod is connected to the top of the rear-end airbag, the other end of the push rod is connected into the side-end airbag, movement of the rear-end airbag pushes gas in the side-end airbag to be transmitted to the adjusting airbag, and gas change of the side-end airbag provides pneumatic assistance for position adjustment of the telescopic plate. And the shielding angle of the dynamic rotary shielding unit is adjusted in a linkage manner.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a novel wheelchair device for assisting the elderly to use the toilet safely. Background Art

[0002] With the acceleration of the aging process, the daily life needs of the elderly, especially the auxiliary needs for basic life activities such as going to the toilet, are gradually attracting widespread attention from the society. For elderly people with limited mobility or physical weakness, safety and convenience when going to the toilet are particularly important. Studies have shown that compared with sitting defecation, squatting defecation can make the anus and rectum straight and increase abdominal pressure, which can significantly improve defecation efficiency and effectively reduce the occurrence of problems such as constipation and hemorrhoids. Therefore, an auxiliary device that can achieve free switching from sitting defecation to squatting defecation can not only help improve the toilet experience of the elderly, but also effectively reduce the health risks caused by poor defecation posture.

[0003] Most of the assistive devices currently on the market, especially wheelchairs, can usually only meet basic mobility needs and are unable to provide adequate support and protection for the elderly during toileting. In medical and nursing institutions, traditional wheelchairs have problems such as single design and functional separation. They cannot achieve dynamic adaptation and linkage adjustment during toileting, which can easily cause discomfort to users and even increase safety risks. In addition, most existing equipment is designed for sitting defecation, which makes it difficult to switch to squatting defecation according to the specific needs of the elderly, and lacks personalized and flexible support.

[0004] The present invention proposes a new wheelchair device for assisting the elderly to use the toilet safely, which specifically solves the above-mentioned problems. By designing the linkage adjustment function of the dynamic adjustment pedal unit, the retractable guardrail and the dynamic rotation shielding unit, the device is highly flexible and accurate during the toileting process. Specifically, the present invention ensures the efficiency and stability of the movement of each component through innovative sliding pedal adjustment, hydraulically driven guardrail lifting and lowering, and pneumatic linkage baffle adjustment design. At the same time, the present invention supports the free switching of sitting and squatting defecation modes, which can not only meet the toileting habits of different elderly people, but also effectively improve toilet health problems.

[0005] For example, in the Chinese utility model patent with application number CN202121144749.5, a new wheelchair for assisting the elderly to use the toilet safely is disclosed. It includes a seat, a lifting device and a moving device, wherein the seat and the moving device are connected via a lifting device, the lifting device is located under the seat, and the moving device is installed under the lifting device. The wheelchair can drive the lifting device to lift the seat thereon through the lifting electric cylinder in the lifting device, and deform the seat forward with the help of a coupling connecting rod, simulating the movement of the elderly getting up, helping the elderly to squat and stand up when using the toilet, and the moving device allows the wheelchair to move flexibly indoors, assisting the elderly to travel between the bedroom and the bathroom. However, the new wheelchair for assisting the elderly to use the toilet safely in the above patent also has the following defects; (1) The existing device only realizes the tilt and lifting of the seat through the cooperation of the lifting electric cylinder and the coupling connecting rod, and cannot flexibly switch between the sitting and squatting modes. For the elderly, the squatting posture is more ergonomic, which can effectively improve defecation efficiency and reduce the occurrence of anorectal diseases.

[0006] (2) The patented device mainly relies on the scissor lift assembly and coupling connecting rod to achieve the lifting and forward tilting of the seat, but the synergy between the various structural parts is weak. For example, the lifting of the armrest and the movement of the seat are not dynamically linked, and the support provided when the elderly stand up may not be stable enough. In addition, there is a lack of guardrail lifting or other auxiliary protection designs, which poses certain safety hazards in actual use.

[0007] (3) Although the patented device has basic lifting and moving functions, it does not have a privacy protection structure designed for the toilet. For elderly users who need additional protection, the existing device is difficult to meet their psychological and physiological needs. In addition, the forward tilt angle of the seat is a fixed design and cannot be dynamically adjusted according to the physical condition and needs of different users, which is insufficient in flexibility. Summary of the invention

[0008] The present invention proposes a new wheelchair device that assists the elderly to use the toilet safely, so as to solve the problems in the above-mentioned prior art, such as the inability to realize flexible switching between sitting and squatting positions for defecation, poor linkage between structures, lack of privacy protection and dynamic adaptation functions. The new wheelchair device has the advantages of simple structure, strong linkage, and diversified functions, and is intended to ensure the safety, convenience and comfort of the elderly in the process of using the toilet, while meeting the personalized needs of different users.

[0009] To achieve the above purpose, the technical idea of ​​the present invention is: (1) By designing a dynamically adjustable pedal unit, the height and angle of the pedal can be adjusted according to user needs. At the same time, with the adjustable seat system, the elderly can seamlessly switch between sitting and squatting defecation modes. This function not only meets the diverse needs of users, but also improves toilet health problems, such as constipation and increased incidence of anorectal diseases.

[0010] (2) A retractable guardrail assembly is integrated into the main body of the wheelchair. The guardrail is linked to the pedals and seat. When the user gets on and off the wheelchair or adjusts the toilet posture, the guardrail rises and falls synchronously to provide reliable support. At the same time, the hydraulic drive design of the guardrail ensures smooth movement and reduces the risk of the user falling.

[0011] (3) The linkage design between the dynamic rotating shielding unit and the dynamic telescopic adjustment unit. When the dynamic rotating shielding unit adjusts its angle, the expansion or contraction of the front airbag is linked to control the gas transmission of the dynamic telescopic adjustment unit through the gas pipe. The airbag box moves accordingly, and the compressed gas is transmitted to the adjustment airbag through the push rod to achieve synchronous adjustment of the telescopic plate.

[0012] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a new type of wheelchair device for assisting the elderly to use the toilet safely, including a wheelchair main body, characterized in that it also includes: two dynamically adjustable pedal units, which are slidably and symmetrically arranged at the front end of the bottom of both sides of the wheelchair main body; a dynamic rotating shielding unit, which is arranged at the front end of the wheelchair main body, including a rear end airbag; a dynamic telescopic adjustment unit, including a push-pull mechanism, a side airbag, a pushing rod, a telescopic plate, and an adjusting airbag; wherein the rear end airbag is connected to the pushing-pull mechanism, and the pushing-pull mechanism drives the rear end airbag to move toward the adjusting airbag; one end of the pushing rod is connected to the top of the rear end airbag, and the other end is connected to the side airbag. The movement of the rear end airbag pushes the gas inside the side airbag to transfer to the adjusting airbag connected thereto. The gas change of the side airbag provides pneumatic assistance for the position adjustment of the telescopic plate, and linkage adjusts the shielding angle of the dynamic rotating shielding unit.

[0013] Furthermore, a telescopic plate is arranged inside the side end airbag, and the telescopic plate includes a sliding cavity, a plate body and an elastic member; wherein the plate body is slidably connected inside the sliding cavity, and the plate body is connected to the side end airbag through the elastic member.

[0014] Furthermore, the dynamic rotating shielding unit includes a rear airbag, a front airbag, an air pipe and a baffle. The front airbag is connected to the rear airbag through the air pipe, and the front airbag is provided with a baffle rotatably connected to the wheelchair body.

[0015] Furthermore, the dynamically adjustable pedal unit includes a pedal, a telescopic rod, and a sliding member, the top of the telescopic rod is connected to the sliding member, the bottom of the sliding member is connected to the pedal, and the sliding member is slidably installed on the side of the wheelchair body.

[0016] Furthermore, the retractable guardrail assembly includes a hydraulic rod, an infusion tube, a push rod and a guardrail, the end of the retractable rod is connected to the hydraulic rod, and the hydraulic rod is connected to the bottom of the push rod through the infusion tube connected to the end thereof.

[0017] Furthermore, a retractable guardrail is sleeved inside the push rod, and the guardrail is retracted and retracted under the drive of the hydraulic rod.

[0018] Furthermore, the push-pull mechanism includes a slider and a sliding shaft. A sliding rail is provided on each side of the upper surface of the wheelchair body. Both ends of the sliding shaft are respectively connected to the ends of the sliding rails, and a slider is slidably connected to the sliding shaft. The sliders on both sides are respectively connected to the inner wall of the rear end airbag.

[0019] Furthermore, the push-pull mechanism also includes a spring, one end of the spring is connected to the end of the slide rail, the other end is connected to the end of the slider, and a protective cover is provided on the outside of the spring.

[0020] Furthermore, the push rod includes a connecting member, a connecting rod, and a push plate. The connecting member is connected to the inner upper surface of the rear end airbag, one end of the connecting rod is connected to the connecting member, and the other end is connected to the push plate.

[0021] Furthermore, an airway extending along the length direction of the side end airbag is arranged inside the side end airbag, a vent hole is arranged on the airway, and the push plate is located inside the airway.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the free switching between sitting and squatting defecation modes by designing a dynamically adjustable pedal unit, meeting the personalized needs of different users. By adapting to the ergonomic design, the toilet posture of the elderly is optimized, the toilet experience is improved, the defecation efficiency is increased, and the risk of health problems such as constipation and hemorrhoids is reduced; 2. The present invention integrates a retractable guardrail assembly on the wheelchair body and realizes the linkage of the guardrail with the pedal and the seat, thereby optimizing the overall coordination of the wheelchair device, improving the practicality of the device in complex care scenarios, reducing the auxiliary burden for nursing and caregivers, and improving the convenience and safety of operation; 3. The present invention not only provides a privacy protection function and meets the user's psychological and self-esteem needs through the linkage design between the dynamic rotating shielding unit and the dynamic telescopic adjustment unit, but also improves the convenience of the device through the linkage optimization of the baffle and the dynamic telescopic adjustment unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 This is an overall structural diagram of a new wheelchair device for assisting the elderly to use the toilet safely according to the present invention; Figure 2 yes Figure 1 A perspective view from another angle; Figure 3 yes Figure 1 Bottom perspective view of Figure 4 yes Figure 1 Side view of Figure 5 It is a schematic diagram of the structure of the main components of the vehicle body; Figure 6 It is a schematic diagram of the structure of the driving components of the vehicle body; Figure 7 It is a schematic diagram of the structure of the pedal and the sliding member; Figure 8 is a schematic diagram of the structure of a dynamically adjustable pedal unit and a retractable armrest assembly; Fig. 9 yes Figure 1 Bottom view of Fig.10 is a structural schematic diagram of a dynamic rotating occlusion unit; Fig.11 It is a structural diagram of the push-pull mechanism; Fig.12 It is a schematic diagram of the structure of the connection between the air bag box and the push rod; Fig.13 It is a schematic diagram of the structure of the telescopic plate; Fig.14 It is a schematic diagram of the internal structure of the telescopic plate; Fig.15 It is a schematic diagram of the structure of the side airbag and the regulating airbag; Fig.16 is a structural schematic diagram of a dynamic rotating shielding unit 1; In the figure: 1. wheelchair body; 11. backboard; 12. rear airbag slot; 13. front airbag slot; 14. drainage hole; 15. slideway; 16. adjustable footrest; 17. guardrail; 18. wheel; 19. push handle; 20. seat plate; 201. slide rail; 2. Dynamically adjustable pedal unit; 21. Pedal; 22. Telescopic rod; 221. Conveying member; 23. Sliding member; 3. Retractable handrail assembly; 31. Hydraulic rod; 32. Infusion tube; 33. Power rod; 34. Handrail; 4. Dynamic rotating shielding unit; 41. Rear airbag; 411. Airbag body; 4111. Air pump; 412. Airbag box; 42. Front airbag; 43. Air pipe; 44. Baffle; 5. Dynamic telescopic adjustment unit; 51. Push-pull mechanism; 511. Spring; 512. Slider; 513. Sliding shaft; 52. Side airbag; 521. Airway; 5211. Vent; 53. Push rod; 531. Connecting piece; 532. Connecting rod; 533. Push plate; 54. Telescopic plate; 541. Sliding cavity; 542. Plate body; 543. Elastic piece; 55. Adjusting airbag; 56. Protective box. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Embodiment 1

[0028] Combination Figures 1 to 16 The present invention discloses a novel wheelchair device for assisting the elderly to use the toilet safely, comprising a wheelchair body 1, and also comprising: two dynamic adjustment pedal units 2, which are slidably and symmetrically arranged at the front ends of the bottoms of both sides of the wheelchair body 1; a dynamic rotation shielding unit 4, which is arranged on the upper surface of the wheelchair body 1, and comprises a rear end airbag 41; a dynamic telescopic adjustment unit 5, which comprises a push-pull mechanism 51, a side end airbag 52, a push rod 53, a telescopic plate 54, and an adjustment airbag 55; Among them, the push-pull mechanism 51 is connected to the rear end airbag 41, and the push-pull mechanism 51 drives the rear end airbag 41 to move toward the adjusting airbag 55; one end of the push rod 53 is connected to the top of the rear end airbag 41, and the other end is connected to the side airbag 52. The movement of the rear end airbag 41 pushes the internal gas of the side airbag 52 to transfer to the adjusting airbag 55. The gas change of the side airbag 52 provides pneumatic assistance for the position adjustment of the telescopic plate 54, and is linked to adjust the shielding angle of the dynamic rotating shielding unit 4.

[0029] like Figure 2 The wheelchair body 1 includes a back plate 11, a rear airbag slot 12, a front airbag slot 13, a discharge hole 14, a slide 15, an adjustable foot support plate 16, a guardrail 17, wheels 18, a push handle 19, and a seat plate 20; Specifically, the back panel 11 is designed in a rectangular or arc-shaped plate shape, which conforms to the curve of the human back. The back panel 11 is fixed to the rear of the wheelchair body 1 by welding or bolts. The rear airbag groove 12 is a rectangular groove structure, located below the back panel 11, for accommodating the rear airbag 41.

[0030] Specifically, the front airbag groove 13 is a narrow and long rectangular groove located at the front end of the seat plate 20, and is used to accommodate the front airbag 42. The discharge hole 14 is an elliptical opening located at the center of the seat plate 20; the slide groove 15 is two linear guide rails, and two parallel slide grooves 15 are arranged at intervals on both sides of the wheelchair body 1, which are used to dynamically adjust the sliding connection of the pedal 21 unit 2, support the height adjustment of the pedal 21 and maintain smooth movement.

[0031] Specifically, the adjustable footrest 16 is a long rectangular plate-like structure with anti-skid patterns on the surface. It is rotatably connected to the lower support leg of the wheelchair body 1 and is used to place the feet during normal use. The guardrail 17 is an arc-shaped guardrail 17, which is linked to the hydraulic drive mechanism; it is fixed to both sides of the seat plate 20 through the guardrail 17 mounting interface; the wheel 18 is circular and covered with a rubber anti-skid layer; the four wheels 18 are respectively installed on the bottom frame of the wheelchair through a rotating shaft, the front wheel is a universal wheel, and the rear wheel is a directional wheel, and is equipped with a braking device to provide movement and stability. The push handle 19 is a U-shaped curved structure, and the handle is covered with anti-skid material; the push handle 19 is fixedly connected to the top of the back plate 11, and is used by caregivers to push the wheelchair to improve the convenience of operation.

[0032] It is worth noting that the wheelchair body 1 is 800mm long, 600mm wide and 900mm high (including the back panel 11), and an arc is provided at the front with a radius of 300mm and an arc length of 200mm. The drainage hole is 350mm long, 250mm wide and 100mm away from the edge of the body.

[0033] like Figure 6 The dynamically adjustable pedal 21 unit 2 includes a pedal 21, a telescopic rod 22, and a sliding member 23. The top of the telescopic rod 22 is connected to the sliding member 23, the bottom of the sliding member 23 is connected to the pedal 21, and the sliding member 23 is slidably installed on the side of the wheelchair body 1.

[0034] Specifically, the pedal 21 is in the shape of a rectangular plate, and the surface is provided with anti-skid patterns to enhance the safety of use; the top of the pedal 21 is connected to the bottom of the sliding member 23 through a fixing member to ensure firmness; the sliding member 23 is a "U"-shaped sliding rod, and the outside is provided with a guide groove matching the slide groove 15, so as to move smoothly in the slide groove 15; the top of the sliding member 23 is fixedly connected to the end of the telescopic rod 22 through a connecting block; the telescopic rod 22 is a cylindrical rod body with a telescopic function, and the inside is a pneumatic structure; like Figure 8The retractable armrest 34 assembly 3 includes a hydraulic rod 31, an infusion tube 32, a power rod 33 and an armrest 34. The end of the telescopic rod 22 is connected to the hydraulic rod 31. The hydraulic rod 31 is connected to the bottom of the power rod 33 by connecting the infusion tube 32 at its end. The power rod 33 is internally sleeved with a retractable armrest 34, and the armrest 34 is retracted and extended under the drive of the hydraulic rod 31.

[0035] Specifically, the telescopic rod 22 is connected to a conveying member 221, and the fixing member is a hollow structure. The output end of the telescopic rod 22 is connected to the hydraulic rod 31 through the conveying member 221. The hollow structure of the conveying member 221 is used for the circulation of gas to ensure stable transmission of hydraulic power. The other end of the conveying member 221 is tightly connected to the input end of the hydraulic rod 31 to form a hydraulic power transmission path, thereby realizing seamless linkage from the telescopic rod 22 to the hydraulic rod 31.

[0036] Specifically, the hydraulic rod 31 is a cylindrical rod body with a hydraulic chamber inside, which is used to provide a power source for the extension and retraction of the handrail 34; one end of the hydraulic rod 31 is connected to the end of the telescopic rod 22 through a conveying member 221; the other end is connected to the bottom of the power-assisting rod 33 through an infusion tube 32 to form a hydraulic circuit; the power-assisting rod 33 is a hollow rod body, which accommodates the telescopic handrail 34, and the outer diameter of the bottom of the telescopic handrail 34 is the same as the inner diameter of the power-assisting rod 33, and a hydraulic interface is provided at the bottom of the power-assisting rod 33 for receiving hydraulic power from the infusion tube 32.

[0037] It is worth mentioning that the armrest 34 adopts a multi-stage telescopic structure, and the surface is covered with anti-slip material to provide a comfortable grip; the armrest 34 is sleeved inside the power-assisting rod 33 and is connected to the power-assisting rod 33 through a sliding guide rail; under the driving action of the power-assisting rod 33, the armrest 34 is telescopic in the vertical direction. Embodiment 2

[0038] refer to Figure 1-Figure 16 A dynamic rotating shielding unit 4 is also provided, which includes a rear airbag 41, a front airbag 42, an air pipe 43 and a baffle 44. The front airbag 42 is connected to the rear airbag 41 through the air pipe 43, and the front airbag 42 is provided with a baffle 44 that is rotatably connected to the wheelchair body 1.

[0039] like Fig.10 The rear airbag 41 includes an airbag body 411 and an airbag box 412, and an air pump 4111 is arranged inside the airbag body 411. The rear airbag 41 is a rectangular flexible airbag, and the airbag body 411 is made of a flexible leakproof material, and a sealed space is formed inside; the airbag box 412 is a rigid shell that wraps the airbag body 411, and is fixedly installed at the rear of the wheelchair body 1 to provide support and fixation; the air pump 4111 is arranged inside the airbag body 411, and is used to realize the gas conversion between the front airbag 42 and the rear airbag 41; It is worth noting that before going to the toilet, the airbag body 411 expands. Since an elliptical hole is provided on the upper surface of the airbag box 412, the airbag body 411 protrudes from the hole to provide support for the human body.

[0040] Specifically, the front airbag 42 is a rectangular flexible airbag, which is connected to the inside of the front airbag groove 13 of the wheelchair body 1 and is adapted to the shape of the baffle 44; the front airbag 42 is connected to the rear airbag 41 through the air supply pipe 43, and receives the gas delivered by the rear airbag 41; when the front airbag 42 expands, it pushes the baffle 44 to rotate, thereby forming a privacy shielding, and when the front airbag 42 contracts, the baffle 44 returns to its initial position, which facilitates the movement and operation of the wheelchair. Embodiment 3

[0041] refer to Figure 1-Figure 16 , a dynamic telescopic adjustment unit 5 is also provided, the dynamic telescopic adjustment unit 5 includes a push-pull mechanism 51, a side airbag 52, a push rod 53, a telescopic plate 54, and an adjustment airbag 55; Among them, the push-pull mechanism 51 is connected to the rear end airbag 41, and the push-pull mechanism 51 drives the rear end airbag 41 to move toward the adjusting airbag 55; one end of the push rod 53 is connected to the top of the rear end airbag 41, and the other end is connected to the side airbag 52. The movement of the rear end airbag 41 pushes the internal gas of the side airbag 52 to transfer to the adjusting airbag 55. The gas change of the side airbag 52 provides pneumatic assistance for the position adjustment of the telescopic plate 54, and is linked to adjust the shielding angle of the dynamic rotating shielding unit 4.

[0042] like Fig.11 The push-pull mechanism 51 includes a slider 512 and a sliding shaft 513, and the push-pull mechanism 51 is installed on the upper surface of the wheelchair body 1. A linear slide rail 201 is provided on both sides of the upper surface of the wheelchair body 1 to support and guide the sliding shaft 513. Both ends of the sliding shaft 513 are fixedly connected to the ends of the slide rail 201, and a slider 512 is slidably connected on the sliding shaft 513. The sliders 512 on both sides are respectively connected to the inner wall of the airbag box 412 of the rear airbag 41. The slide rail 201 and the sliding shaft 513 together constitute the sliding path of the slider 512, ensuring that the slider 512 moves smoothly in a straight direction.

[0043] Specifically, the push-pull mechanism 51 also includes a spring 511, one end of which is fixed to the end of the slide rail 201, and the other end is connected to the end of the slider 512. At the same time, a protective cover is provided on the outside of the spring 511 to prevent foreign matter from intruding. When the rear airbag 41 delivers gas to the front airbag 42 through the gas pipe 43, the rear airbag 41 loses support, and the airbag box 412 moves forward with the tensile force of the spring 511. The movement of the rear airbag 41 box simultaneously drives the push rod 53 connected thereto to push toward the side airbag 52, and the push rod 53 acts on the side airbag 52 to realize gas flow, thereby completing the linkage adjustment and dynamic adjustment of the entire airbag system.

[0044] like Figure 13-14 The side airbag 52 and the top of the telescopic plate 54 are covered with a protective box 56. The airbag box 412 is a rectangular plate-like structure with a hollow design at the bottom and front and an elliptical hole at the top. When the rear airbag 41 completes gas delivery, the airbag box 412 moves forward under the tensile force of the spring 511. Since the bottom of the airbag box 412 contacts the top of the protective box 56, the airbag box 412 slides along the top surface of the protective box 56 under the action of the spring 511. This sliding process minimizes friction through the smooth surface of the top of the protective box 56 and the hollow design of the bottom of the airbag box 412, ensuring the smooth movement of the airbag box 412. During the sliding process, the elliptical hole on the upper part of the airbag box 412 gradually corresponds to the rectangular hole formed by the telescopic plates 54 designed symmetrically on the left and right sides, thereby completing the linkage docking and entering a stable state.

[0045] Specifically, while the airbag box 412 moves forward, since a push rod 53 is provided at the end of the airbag box 412 close to the side airbag 52, the other end of the push rod 53 is inside the side airbag 52, and is used to push the gas in the side airbag 52 to be transferred to the adjusting airbag 55. The gas change of the adjusting airbag 55 provides pneumatic assistance for the position adjustment of the telescopic plate 54, and is linked to adjust the shielding angle of the dynamic rotating shielding unit 4.

[0046] It is worth noting that, when not using the toilet, the adjustable foot support plate 16 is rotated to the front, the airbag body 411 is inflated, and the holes of the airbag box 412 contain inflated airbags, and the elderly person's buttocks are placed on the airbags. When the elderly person needs to use the toilet, the airbag box 412 moves forward, and the elderly person needs to lift his buttocks slightly to achieve smooth sliding of the airbag box 412.

[0047] like Fig.14The push rod 53 includes a connecting member 531, a connecting rod 532, and a push plate 533. The connecting member 531 is connected to the upper surface of the airbag box 412. One end of the connecting rod 532 is connected to the connecting member 531, and the other end is connected to the push plate 533. An air passage 521 extending along the length direction of the side airbag 52 is provided inside the side airbag 52. A vent hole 5211 is provided on the air passage 521. The push plate 533 is located inside the air passage 521.

[0048] Specifically, the connecting member 531 is a rigid component, which is fixedly mounted on the inner upper surface of the airbag box 412 and serves as a support point for the push rod 53. The connecting rod 532 is a slender rod, one end of which is connected to the connecting member 531, and the other end is fixed to the push plate 533 by a buckle or a bolt to ensure effective transmission of force. The push plate 533 is a sheet-like structure, located in the airway 521 of the side airbag 52, and moves with the push rod 53 to push the gas flow. The size of the push plate 533 matches the cross-section of the airway 521, ensuring that the gas can be fully compressed in the airway 521 and transmitted to the regulating airbag 55.

[0049] Specifically, an air channel 521 extending along the length direction of the side end air bag 52 is provided inside the side end air bag 52, and a vent hole 5211 is provided on the air channel 521, and the push plate 533 is located inside the air channel 521. The distribution design of the vent hole 5211 at the top of the air channel 521 ensures uniform discharge of gas and avoids the generation of local high pressure or low pressure areas inside the regulating air bag 55.

[0050] It is worth noting that a telescopic plate 54 that closely matches the side airbag 52 is provided on the inner side thereof, and the telescopic plate 54 includes a sliding cavity 541, a plate body 542 and an elastic member 543. The sliding cavity 541 is a hollow cavity structure, extending along the length direction of the telescopic plate 54, and the plate body 542 is slidably connected therein. The plate body 542 is a rectangular plate-like structure, and its side is connected to the inner wall of the side airbag 52 through the elastic member 543 to form a dynamic adjustment system. When the gas pressure in the side airbag 52 changes, the elastic member 543 is stretched or compressed, driving the plate body 542 to move back and forth in the sliding cavity 541, thereby realizing the length adjustment of the telescopic plate 54. The elastic member 543 is made of high-strength elastic material, which is flexible to adapt to pressure changes and has a high restoring force to ensure that the plate body 542 can quickly return to its initial position. Through the guiding effect of the sliding cavity 541, the movement of the plate body 542 is smoother, avoiding jamming or deviation, so that the entire system can achieve accurate and stable linkage adjustment under the change of gas pressure of the side airbag 52.

[0051] The workflow of this embodiment The retractable pedal 21 is slidably connected to the slide groove 15 on the wheelchair body 1 through the sliding member 23. After starting, the telescopic rod 22 is extended or shortened under the drive of the hydraulic or pneumatic device, thereby pushing the sliding member 23 to move up and down along the slide groove 15, driving the pedal 21 to adjust the height.

[0052] The sliding of the retractable pedal 21 not only changes its own position, but also triggers the hydraulic system to drive the retractable armrest assembly 3 through the linkage of the telescopic rod 22. The output end of the telescopic rod 22 is connected to the hydraulic rod 31, and the hydraulic rod 31 transmits the liquid pressure to the booster rod 33 through the infusion tube 32. The booster rod 33 generates a lifting movement with the change of the hydraulic pressure, pushing the armrest 34 to rise upward or retract downward along the two sides of the wheelchair body 1.

[0053] The dynamic rotating shielding unit 4 is linked with the dynamic telescopic adjustment unit 5 through the gas transmission system. After starting, the rear airbag 41 delivers gas to the front airbag 42 through the gas pipe 43. The front airbag 42 expands under the action of gas pressure, pushing the baffle 44 to rotate around its axis to form a shielding or open state. In this process, the gas output of the rear airbag 41 further triggers the action of the dynamic telescopic adjustment unit 5. The dynamic telescopic adjustment unit 5 includes a spring 511 and a push-pull mechanism 51. As the gas of the rear airbag 41 flows to the front airbag 42, the airbag box 412 slides forward along the protection box 56 under the action of the tensile force of the spring 511, so that the hole on the airbag box 412 is aligned with the discharge hole 14. At the same time, the push rod 53 compresses the gas from the side airbag 52 and delivers it to the adjustment airbag 55. At this time, the gas in the side airbag 52 is reduced, thereby driving the dynamic adjustment of the position of the telescopic plate 54, thereby realizing the precise linkage between the baffle 44 component and the dynamic telescopic adjustment unit 5.

[0054] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new wheelchair device for assisting the elderly to use the toilet safely, comprising a wheelchair body (1), characterized in that ； Also includes; Two dynamically adjustable pedal units (2) are slidably and symmetrically arranged at the bottom front ends of both sides of the wheelchair body (1); A dynamic rotating shielding unit (4) is arranged at the front end of the wheelchair body (1) and comprises a rear end airbag (41); A dynamic telescopic adjustment unit (5), comprising a push-pull mechanism (51), a side airbag (52), a push rod (53), a telescopic plate (54), and an adjustment airbag (55); The push-pull mechanism (51) is connected to a rear airbag (41), and the push-pull mechanism (51) drives the rear airbag (41) to move in the direction of the regulating airbag (55); one end of the push rod (53) is connected to the top of the rear airbag (41), and the other end is connected to the inside of the side airbag (52); the movement of the rear airbag (41) pushes the gas inside the side airbag (52) to be transferred to the regulating airbag (55) connected thereto; the gas change in the side airbag (52) provides pneumatic assistance for the position adjustment of the telescopic plate (54), and is linked to adjust the shielding angle of the dynamic rotating shielding unit (4).

2. A new wheelchair device for assisting the elderly to use the toilet safely according to claim 1, characterized in that: A telescopic plate (54) is provided inside the side end airbag (52), and the telescopic plate (54) comprises a sliding cavity (541), a plate body (542) and an elastic member (543); A plate body (542) is slidably connected in the sliding cavity (541), and the plate body (542) is connected to the side end airbag (52) via an elastic member (543).

3. A new wheelchair device for assisting the elderly to use the toilet safely according to claim 1, characterized in that: The dynamic rotating shielding unit (4) comprises a rear airbag (41), a front airbag (42), an air pipe (43) and a baffle (44); the front airbag (42) is connected to the rear airbag (41) via the air pipe (43); and the front airbag (42) is provided with a baffle (44) rotatably connected to the wheelchair body (1).

4. A new wheelchair device for assisting the elderly to use the toilet safely according to claim 1, characterized in that: The dynamically adjustable pedal unit (2) comprises a pedal (21), a telescopic rod (22), and a sliding member (23); the top of the telescopic rod (22) is connected to the sliding member (23); the bottom of the sliding member (23) is connected to the pedal (21); and the sliding member (23) is slidably mounted on the side of the wheelchair body (1).

5. The novel wheelchair device for assisting the elderly to use the toilet safely according to claim 1 is characterized in that: The telescopic guardrail assembly (3) comprises a hydraulic rod (31), a fluid infusion tube (32), a push rod (33) and a guardrail (34). The end of the telescopic rod (22) is connected to the hydraulic rod (31), and the hydraulic rod (31) is connected to the bottom of the push rod (33) via the fluid infusion tube (32) connected to the end of the hydraulic rod (31).

6. A new wheelchair device for assisting the elderly to use the toilet safely according to claim 5, characterized in that: A retractable guardrail (34) is sleeved inside the push rod (33), and the guardrail (34) is retractable when driven by the hydraulic rod (31).

7. A new wheelchair device for assisting the elderly to use the toilet safely according to claim 1, characterized in that: The push-pull mechanism (51) comprises a slider (512) and a sliding shaft (513); a sliding rail (201) is provided on each of the left and right sides of the upper surface of the wheelchair body (1); both ends of the sliding shaft (513) are respectively connected to the ends of the sliding rail (201); and the slider (512) is slidably connected to the sliding shaft (513); and the sliders (512) on both sides are respectively connected to the inner wall of the rear end airbag (41).

8. A new wheelchair device for assisting the elderly to use the toilet safely according to claim 7, characterized in that: The push-pull mechanism (51) further comprises a spring (511), one end of the spring (511) being connected to the end of the slide rail (201), and the other end of the spring (511) being connected to the end of the slide block (513), and a protective cover being provided on the outside of the spring (511).

9. The novel wheelchair device for assisting the elderly to use the toilet safely according to claim 1, characterized in that: The push rod (53) comprises a connecting piece (531), a connecting rod (532), and a push plate (533); the connecting piece (531) is connected to the inner upper surface of the rear end air bag (41); one end of the connecting rod (532) is connected to the connecting piece (531), and the other end is connected to the push plate (533).

10. The novel wheelchair device for assisting the elderly to use the toilet safely according to claim 1, characterized in that: An air channel (521) extending along the length direction of the side end air bag is arranged inside the side end air bag (52), a vent hole (5211) is arranged on the air channel (521), and a push plate (533) is located inside the air channel (521).

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