Assistant chair

Abstract

The invention discloses a chair for helping the aged. The chair comprises a chair body, a seat panel, a pedal and an auxiliary mechanism, the front end of the seat panel is rotationally connected with a lifting plate through a seat rotating shaft; the pedal is connected with the lower part of the supporting plate; the auxiliary mechanism comprises a lead screw arranged on one side of the supporting plate, a spline fixed to the top of the lead screw and a sleeve connected with the spline in a sleeved mode, the middle of the sleeve is rotationally connected with the lifting plate, the top of the sleeve is in linkage with the seat rotating shaft through a first gear set, and the middle of the lead screw is in threaded connection with a regulation and control plate fixed to the lifting plate. The seat panel is synchronously lifted while supporting the buttocks of an old person to assist the old person to stand, so that the pressure of the standing action on the legs of the old person is reduced, otherwise, the buttocks of the old person are tightly attached to the seat panel, the screw rod rotates to gradually lay the seat panel flat, the old person is assisted to gradually sit on the chair body, and the assisting effect on the old person is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elderly assistance chairs, and particularly relates to an elderly assistance chair. Background Art

[0002] Population aging refers to the dynamic process in which the proportion of the elderly population in the total population increases correspondingly due to the decrease in the fertility rate and the extension of the average life expectancy, resulting in a decrease in the number of young people and an increase in the number of elderly people. At present, the problem of population aging in China has gradually attracted people's attention.

[0003] The invention patent with the publication number of CN111658350B discloses an elderly assistance chair, which includes a chair body, and also includes a seat panel and a lifting and flipping mechanism. The front end of the seat panel is hinged to the middle part of the chair body, and the lifting and flipping mechanism is located at the lower end of the seat panel and is connected to the lower end of the seat panel; the lifting and flipping mechanism can drive the seat panel to rotate along the hinge with the chair body. Using this elderly assistance chair can help the elderly stand up from the chair.

[0004] When the above solution is implemented, when the elderly need to stand up while sitting on the chair, although the inclination of the seat panel can lift the buttocks of the elderly to assist the elderly to stand up, the knees of the elderly are in a bent state when sitting, and after standing, the knees of the legs are in a nearly straight state. Therefore, during the standing process, the position of the buttocks will gradually rise, and the traditional elderly assistance chair can only assist in pushing the buttocks away from the chair, and the elderly need to continuously exert force with their legs to fully stand up, resulting in great inconvenience for the elderly to use. Summary of the Invention

[0005] Based on this, in view of the above technical problems, the present invention adopts the following technical solutions: An elderly assistance chair, which includes: A chair body; A seat panel, which is placed at the seat of the chair body. The front end of the seat panel is rotatably connected with a lifting plate through a seat shaft. A support plate fixed to the chair body is vertically arranged inside the lifting plate, and the lifting plate is vertically slidably connected with the support plate; A pedal, which is connected to the lower part of the support plate; An auxiliary mechanism, which includes a lead screw arranged on one side of the support plate, a spline fixed to the top of the lead screw, a sleeve sleeved on the spline. The middle part of the sleeve is rotatably connected with the lifting plate. The top of the sleeve is linked with the seat shaft through a first gear set. A regulating plate fixed to the lifting plate is threadedly connected to the middle part of the lead screw, and a driving mechanism is arranged at the bottom of the lead screw.

[0006] As a preferred embodiment of the assistive chair provided by the present invention, a guide rod is fixed to the bottom of the lifting plate. The guide rod is vertically inserted into the side surface of the support plate. The lifting plate drives the guide rod to be vertically inserted into the support plate, enabling the lifting plate to move vertically stably, thereby stably assisting the elderly to stand up and sit down.

[0007] As a preferred embodiment of the assistive chair provided by the present invention, the driving mechanism includes a driving member installed on the chair body and a driving rod installed at the output end of the driving member. The output end of the driving rod is linked to the lead screw through a second gear set. When it is necessary to control the rotation of the lead screw, the driving member is used to drive the driving rod to rotate, and the second gear set is used to synchronously control the rotation of the lead screw to achieve the control of the lead screw.

[0008] As a preferred embodiment of the assistive chair provided by the present invention, a rotating rod is arranged between the driving rod and the second gear set. The end of the rotating rod is connected to the second gear set, and a coupling mechanism is arranged between the other end of the rotating rod and the end of the driving rod. The coupling mechanism is connected to the pedal. When the driving rod works and drives the driving rod to rotate, the driving rod will drive the rotating rod to rotate through the coupling mechanism, and the rotating rod drives the lead screw to rotate through the second gear set to control the lead screw.

[0009] As a preferred embodiment of the assistive chair provided by the present invention, the coupling mechanism includes a linkage plate connected to the pedal, a face gear placed below the linkage plate, and two tooth rings meshing with the face gear. The two tooth rings are respectively installed at the ends of the corresponding rotating rod and the driving rod. A spring is installed between the linkage plate and the face gear. When the teeth of the face gear mesh with the two tooth rings, the rotation of the driving rod will synchronously drive the rotation of the rotating rod. On the contrary, when the face gear disengages from the two tooth rings, the rotation of the driving rod will not drive the rotation of the rotating rod, thereby avoiding the situation where the driving member is wrongly started and the elderly are dropped.

[0010] As a preferred embodiment of the assistive chair provided by the present invention, the linkage plate penetrates through the support plate, and the linkage plate is vertically slidably connected to the support plate, enabling the pedal and the linkage plate to move vertically stably along the support plate.

[0011] As a preferred embodiment of the assistive chair provided by the present invention, a plug rod is fixed to the top of the face gear. The plug rod penetrates through the linkage plate, and the spring is sleeved on the plug rod, so that when the linkage plate compresses the spring, the elastic force accumulated by the spring can stably act on the face gear in the vertical direction.

[0012] As a preferred embodiment of the assistive chair provided by the present invention, a limiting strip arranged radially along the spline is fixed on the outer ring of the spline. The regulation plate is of a frame structure and is arranged around the outer ring of the support plate. When the spline is inserted into the sleeve, the spline can drive the sleeve to rotate synchronously, so that the lifting plate moves up and down stably along the support plate.

[0013] As a preferred embodiment of the assistive chair provided by the present invention, a chute is provided at the corresponding position of the chair body and the seat rotating shaft. The seat rotating shaft slides vertically along the chute on the chair body. When the seat panel moves up, it will move up along the chute on the chair body through the seat rotating shaft, further improving the stability of the movement and the safety of the structure.

[0014] As a preferred embodiment of the assistive chair provided by the present invention, a soft pad is arranged on the top surface of the seat panel, and an anti-slip pattern or an anti-slip rubber pad is arranged on the top surface of the pedal. The elderly can stand on the pedal to operate, which is convenient for assisting the elderly to stand up and sit down.

[0015] Compared with the prior art, the present invention has the following beneficial effects: For the assistive chair provided by the present invention, the elderly rest on the seat panel of the chair body. When the elderly need to stand up, at this time, the spline is driven to rotate by the lead screw, and the sleeve is synchronously driven to rotate. At this time, the seat rotating shaft linked by the first gear set drives the seat panel to gradually turn over, gradually lifting the buttocks of the elderly. In order to make the seat panel always fit the buttocks of the elderly to support them, when the lead screw rotates, it will drive the regulation plate and the lifting plate to move up, thereby synchronously driving the seat panel to move up, so that the seat panel moves up synchronously while lifting the buttocks of the elderly, assisting the elderly to stand on both legs, thereby reducing the pressure on the elderly's legs during the standing movement. On the contrary, when the elderly need to sit on the chair body, their buttocks are close to the seat panel, the lead screw rotates to gradually flatten the seat panel, and the lifting plate is synchronously controlled to move down, assisting the elderly to gradually sit on the chair body, thereby improving the assisting effect on the elderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure provided by the present invention; Figure 2 It is a schematic diagram of the structure when the seat panel is lifted and turned over provided by the present invention; Figure 3Schematic diagram of the seat panel and auxiliary mechanism provided by the present invention Figure 1 ; Figure 4 Schematic diagram of the seat panel and auxiliary mechanism provided by the present invention Figure 2 ; Figure 5 Schematic diagram of the structure of the auxiliary mechanism when the seat panel of the present invention is lifted and flipped; Figure 6 Schematic diagram of the coupling mechanism provided by the present invention.

[0018] The markings in the figure are explained as follows: 1. Chair body; 2. Seat panel; 3. Lifting plate; 4. Support plate; 5. Pedal; 6. Guide rod; 7. Seat rotation shaft; 8. Gear set one; 9. Sleeve; 10. Spline; 11. Lead screw; 12. Regulation plate; 13. Gear set two; 14. Rotating rod; 15. Driving member; 16. Driving rod; 17. Tooth ring; 18. Linking plate; 19. Face gear; 20. Spring. Detailed implementation manners

[0019] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As described in the background art, traditional elderly assistance chairs can only assist in pushing the buttocks away from the chair, and the elderly need to continuously exert force with their legs to fully stand up, resulting in great inconvenience for the elderly to use.

[0021] Specifically, please refer to Figures 1 - 5 , an elderly assistance chair, including a chair body 1, a seat panel 2, a pedal 5 and an auxiliary mechanism; the seat panel 2 is placed at the seat of the chair body 1, the front end of the seat panel 2 is rotatably connected to a lifting plate 3 through a seat rotation shaft 7, a support plate 4 fixed to the chair body 1 is vertically arranged inside the lifting plate 3, and the lifting plate 3 is vertically slidably connected to the support plate 4; the pedal 5 is connected to the lower part of the support plate 4; the auxiliary mechanism includes a lead screw 11 arranged on one side of the support plate 4, a spline 10 fixed to the top of the lead screw 11, a sleeve 9 sleeved on the spline 10, the middle part of the sleeve 9 is rotatably connected to the lifting plate 3, the top of the sleeve 9 is linked to the seat rotation shaft 7 through a gear set one 8, the middle part of the lead screw 11 is threadedly connected to a regulation plate 12 fixed to the lifting plate 3, and a driving mechanism is arranged at the bottom of the lead screw 11.

[0022] An elderly assistance chair provided by the present invention. An elderly person rests on the seat panel 2 of the chair body 1. When the elderly person needs to stand up, at this time, the lead screw 11 drives the spline 10 to rotate, and synchronously drives the sleeve 9 to rotate. The seat shaft 7 linked by the first gear set 8 drives the seat panel 2 to gradually turn over, gradually lifting the buttocks of the elderly person. In order to make the seat panel 2 always fit the buttocks of the elderly person to support it, when the lead screw 11 rotates, it will drive the regulation plate 12 and the lifting plate 3 to move upward, thereby synchronously driving the seat panel 2 to move upward, so that the seat panel 2 lifts synchronously while lifting the buttocks of the elderly person, assisting the elderly person to stand on both legs, thereby reducing the pressure on the legs of the elderly person during the standing action. On the contrary, when the elderly person needs to sit on the chair body 1, his buttocks are closely attached to the seat panel 2. The lead screw 11 rotates to gradually flatten the seat panel 2, and synchronously controls the lifting plate 3 to move downward, assisting the elderly person to gradually sit on the chair body 1, thereby improving the assistance effect on the elderly person.

[0023] In order to enable the personnel in the technical field to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings.

[0024] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Embodiment

[0026] Please refer to Figures 1 - 5 , an elderly assistance chair, including a chair body 1, a seat panel 2, a pedal 5 and an auxiliary mechanism; the seat panel 2 is placed at the seat of the chair body 1. During use, the buttocks of the elderly person sit on the seat panel 2. A soft pad is provided on the top surface of the seat panel 2 to improve the comfort of the elderly person's seat. The front end of the seat panel 2 is rotatably connected to a lifting plate 3 through a seat shaft 7. A support plate 4 fixed to the chair body 1 is vertically arranged inside the lifting plate 3. The lifting plate 3 is vertically slidably connected to the support plate 4. The lifting plate 3 and the support plate 4 are arranged at the leg position of the chair body 1. When the lifting plate 3 moves upward, it will drive the seat panel 2 to move upward, playing a role in lifting the buttocks of the elderly person. On the contrary, the lifting plate 3 drives the seat panel 2 to move downward, assisting the buttocks of the elderly person who needs to sit and stand to gradually sit on the seat panel 2, facilitating the operation of the elderly person to stand up and sit down. A guide rod 6 is fixed to the bottom of the lifting plate 3. The guide rod 6 is vertically inserted into the side surface of the support plate 4. The lifting plate 3 drives the guide rod 6 to be vertically inserted into the support plate 4, so that the lifting plate 3 can stably move vertically, thereby stably assisting the elderly person to stand up and sit down.

[0027] In addition, the pedal 5 is connected to the lower part of the support plate 4. The top surface of the pedal 5 is provided with anti-slip patterns or anti-slip rubber pads, allowing the elderly to stand on the pedal 5 for operation, which facilitates assisting the elderly to stand up and sit down.

[0028] It is worth mentioning that the auxiliary mechanism includes a lead screw 11 arranged on one side of the support plate 4, a spline 10 fixed to the top of the lead screw 11, and a sleeve 9 sleeved on the spline 10. The middle of the sleeve 9 is rotatably connected to the lifting plate 3. The top of the sleeve 9 is linked to the seat rotating shaft 7 through a first gear set 8. The middle of the lead screw 11 is threadedly connected to a regulating plate 12 fixed to the lifting plate 3. A driving mechanism is arranged at the bottom of the lead screw 11. By driving the lead screw 11 to rotate through the driving mechanism, the lead screw 11 drives the spline 10 to rotate and simultaneously drives the sleeve 9 to rotate. At this time, the seat rotating shaft 7 linked through the first gear set 8 drives the seat panel 2 to gradually flip, gradually lifting the buttocks of the elderly. In order to keep the seat panel 2 always fitting the buttocks of the elderly for support, when the lead screw 11 rotates, it will drive the regulating plate 12 and the lifting plate 3 to move upward, thereby synchronously driving the seat panel 2 to move upward, so that the seat panel 2 lifts synchronously while lifting the buttocks of the elderly. When the lifting plate 3 moves upward, it will drive the sleeve 9 to move upward. Since the bottom of the sleeve 9 is inserted into the spline 10, the spline 10 will always drive the sleeve 9 to rotate when the sleeve 9 moves upward, achieving the purpose of synchronously driving the seat rotating shaft 7 to rotate and controlling the flipping of the seat panel 2, facilitating linkage control and improving the convenience of operation. Conversely, when the elderly need to sit on the chair body 1, their buttocks are closely attached to the seat panel 2. The lead screw 11 rotates to gradually flatten the seat panel 2 and simultaneously controls the lifting plate 3 to move downward, assisting the elderly to gradually sit on the chair body 1, thereby improving the auxiliary effect on the elderly.

[0029] In addition, the driving mechanism includes a driving member 15 installed on the chair body 1 and a driving rod 16 installed at the output end of the driving member 15. The output end of the driving rod 16 is linked to the lead screw 11 through a second gear set 13. When it is necessary to control the rotation of the lead screw 11, the driving member 15 is used to drive the driving rod 16 to rotate, and the rotation of the lead screw 11 is synchronously controlled through the second gear set 13 to achieve the control of the lead screw 11.

[0030] Preferably, a limiting strip is fixed to the outer circle of the spline 10 along the radial direction of the spline 10. When the spline 10 is inserted into the sleeve 9, the spline 10 can drive the sleeve 9 to rotate synchronously, and the sleeve 9 can freely move up and down while rotating. The regulating plate 12 is of a frame structure and is arranged around the outer circle of the support plate 4, enabling the lifting plate 3 to move up and down stably along the support plate 4. A sliding groove is provided at the corresponding position of the chair body 1 and the seat rotating shaft 7, and the seat rotating shaft 7 slides vertically along the sliding groove on the chair body 1. When the seat panel 2 moves upward, it will move upward along the sliding groove on the chair body 1 through the seat rotating shaft 7, further improving the stability of the movement and the safety of the structure. Embodiment

[0031] Further optimize an elderly assistance chair provided in the first embodiment. Different from the first embodiment, as Figures 4 - 6 shown, a rotating rod 14 is provided between the driving rod 16 and the second gear set 13. The end of the rotating rod 14 is connected to the second gear set 13, and a coupling mechanism is provided between the other end of the rotating rod 14 and the end of the driving rod 16. The coupling mechanism is connected to the pedal 5. When the driving rod 16 works to drive the driving rod 16 to rotate, the driving rod 16 will drive the rotating rod 14 to rotate through the coupling mechanism, and the rotating rod 14 drives the lead screw 11 to rotate through the second gear set 13 to control the lead screw 11.

[0032] It is worth mentioning that, as Figure 6 shown, the coupling mechanism includes a linkage plate 18 connected to the pedal 5, a face gear 19 placed below the linkage plate 18, and two toothed rings 17 meshing with the face gear 19. The two toothed rings 17 are respectively installed at the ends of the corresponding rotating rod 14 and the driving rod 16. A spring 20 is installed between the linkage plate 18 and the face gear 19. When the teeth of the face gear 19 mesh with the two toothed rings 17, at this time, the rotation of the driving rod 16 will synchronously drive the rotation of the rotating rod 14. On the contrary, when the face gear 19 disengages from the two toothed rings 17, the rotation of the driving rod 16 will not drive the rotation of the rotating rod 14, thereby avoiding the situation where the driving member 15 starts incorrectly and causes the elderly to fall.

[0033] When the elderly need to stand up, the elderly step down forcefully on the pedal 5 with both feet. The pedal 5 will move downward and synchronously drive the linkage plate 18 to move downward. The linkage plate 18 compresses the spring 20 to store elastic potential energy. The compressed spring 20 pushes the face gear 19 downward to tightly mesh with the toothed ring 17, so that when the driving member 15 drives the driving rod 16 to rotate, the rotating rod 14 and the driving rod 16 rotate synchronously, thereby driving the lead screw 11 to rotate, controlling the seat panel 2 to move upward and deflect; so that when stepping down forcefully on the pedal 5 with both feet, the corresponding seat panel 2 can be controlled to move upward and deflect through the driving member 15, preventing the situation where the driving member 15 starts incorrectly and causes the elderly to fall. In addition, when the pedal 5 is not stressed, the pressure of the top spring 20 on the face gear 19 is reduced, and the face gear 19 and the toothed ring 17 cannot be tightly meshed. At this time, when the driving member 15 drives the driving rod 16 to rotate, the rotating rod 14 cannot rotate synchronously with it, making the device play a certain role in preventing mis-starting and having better safety.

[0034] Preferably, the linkage plate 18 penetrates through the support plate 4 and is vertically slidably connected to the support plate 4, so that the pedal 5 and the linkage plate 18 can stably move vertically along the support plate 4. A plug rod is fixed to the top of the face gear 19. The plug rod penetrates through the linkage plate 18, and the spring 20 is sleeved on the plug rod, so that when the linkage plate 18 compresses the spring 20, the elastic force stored in the spring 20 can stably act on the face gear 19 in the vertical direction.

[0035] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "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, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal connection 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.

[0036] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all of them. The preferred embodiments of the present invention are shown in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields shall be within the scope of the patent protection of the present invention by the same token.

Claims

1. An elderly-assisting chair, characterized in that: It includes: Chair body(1); A seat panel (2), the seat panel (2) being placed at the seat of the chair body (1), the front end of the seat panel (2) being rotatably connected to a lifting plate (3) via a seat rotating shaft (7), a support plate (4) fixed to the chair body (1) being vertically arranged on the inner side of the lifting plate (3), the lifting plate (3) being vertically slidably connected to the support plate (4); A pedal (5), the pedal (5) being connected to the lower part of the support plate (4); An auxiliary mechanism, the auxiliary mechanism comprising a screw rod (11) arranged on one side of a support plate (4), a spline (10) fixed to the top of the screw rod (11), and a sleeve (9) sleeved with the spline (10), the middle portion of the sleeve (9) being rotatably connected to the lifting plate (3), the top of the sleeve (9) being linked to the seat shaft (7) via a gear set (8), the middle portion of the screw rod (11) being threadedly connected to a regulating plate (12) fixed to the lifting plate (3), and the bottom of the screw rod (11) being provided with a driving mechanism.

2. The elderly-assisting chair according to claim 1, characterized in that: A guide rod (6) is fixed to the bottom of the lifting plate (3), and the guide rod (6) is vertically plugged into the side surface of the support plate (4).

3. The elderly-assisting chair according to claim 1, characterized in that: The driving mechanism comprises a driving member (15) mounted on the chair body (1), and a driving rod (16) mounted on the output end of the driving member (15); the output end of the driving rod (16) is linked to the screw rod (11) via a second gear set (13).

4. The elderly-assisting chair according to claim 3, characterized in that: A rotating rod (14) is provided between the driving rod (16) and the second gear set (13), the end of the rotating rod (14) being connected to the second gear set (13), and a coupling mechanism is provided between the other end of the rotating rod (14) and the end of the driving rod (16), and the coupling mechanism is connected to the pedal (5).

5. The elderly-assisting chair according to claim 4, characterized in that: The coupling mechanism comprises a linkage plate (18) connected to the pedal (5), a face gear (19) disposed below the linkage plate (18), and two ring gears (17) meshing with the face gears (19); the two ring gears (17) are respectively mounted on the ends of the corresponding rotating rod (14) and the driving rod (16); and a spring (20) is mounted between the linkage plate (18) and the face gear (19).

6. The elderly-assisting chair according to claim 5, characterized in that: The linkage plate (18) is arranged to penetrate the support plate (4), and the linkage plate (18) is vertically slidably connected to the support plate (4).

7. The elderly-assisting chair according to claim 5, characterized in that: A plug rod is fixed on the top of the face gear (19), the plug rod passes through the linkage plate (18), and the spring (20) is sleeved on the plug rod.

8. The elderly-assisting chair according to claim 1, characterized in that: The outer ring of the spline (10) is fixed with a limit strip arranged radially along the spline (10); the regulating plate (12) is a frame-type structure; the regulating plate (12) is arranged around the outer ring of the support plate (4).

9. The elderly-assisting chair according to claim 1, characterized in that: Slide grooves are provided at positions corresponding to the chair body (1) and the seat rotating shaft (7), and the seat rotating shaft (7) slides vertically along the slide grooves on the chair body (1).

10. The elderly-assisting chair according to claim 1, characterized in that: The top surface of the seat panel (2) is provided with a soft pad, and the top surface of the pedal (5) is provided with an anti-slip pattern or an anti-slip rubber pad.

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