A type of chair for home-based aging-friendly applications

Abstract

This application proposes a home-based age-friendly chair, comprising: a moving device disposed at the front end of the base bottom; a first control unit disposed at the base bottom and connected to the moving device; a guide device disposed at the rear end of the base bottom; and a second control unit disposed at the base bottom and connected to the guide device. The guide device includes: a fixed axis disposed perpendicular to the base bottom surface; a U-shaped guide seat connected to the fixed axis; and guide wheels disposed within the U-shaped guide seat. The second control unit includes: a double-headed cylinder disposed between two U-shaped guide seats; and a reversing seat connected to the output end of the double-headed cylinder. By setting the second control unit to connect to the guide device, after the user adjusts to a comfortable sitting posture, the double-headed cylinder is activated to make the reversing seat contact the U-shaped guide seat, and then the U-shaped guide seat is pushed to drive the rollers on both sides to rotate in a figure-eight shape, thereby locking the chair. This solves the problem in the prior art that the chair cannot be slightly adjusted after the elderly person sits on it.

Description

Technical Field

[0001] This utility model relates to the technical field of child safety seats, and more particularly to a seat suitable for home use in elderly-friendly scenarios. Background Technology

[0002] Aging-friendly home environments refer to home environments specially designed and modified to meet the living needs of the elderly. By optimizing furniture layout, adding assistive facilities, and selecting age-friendly products, the safety, comfort, and convenience of the elderly at home can be improved, thereby meeting their various daily needs and promoting healthy aging and improved quality of life.

[0003] A utility model patent, titled "A Gravity-Sensing Functional Caster for Age-Friendly Seats," with publication number CN216675244U, is disclosed. It includes: a metal foot cover fixed to the seat leg with screws; a rubber wheel installed at the bottom of the metal foot cover; and a connector and spring positioned between the metal foot cover and the rubber wheel. In use, when the user sits on the chair, the metal foot cover descends due to gravity and contacts the ground. At this point, the rubber wheel can no longer roll, thus providing a fixing function. When the user gets up and needs to move the chair, the upward force of the spring causes the metal foot cover to lift off the ground, at which point the rubber wheel can roll, facilitating the movement of the chair.

[0004] However, according to the patent application, when the elderly person sits on the chair, the spring is already compressed, causing the metal foot cover to contact the ground and lock the chair. At this time, it is difficult for the elderly person to adjust the chair to a comfortable position. They need to get up repeatedly to remove the metal foot cover from the ground in order to make minor adjustments to the chair. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology that age-friendly chairs cannot allow elderly people to make minor adjustments to the chair after sitting down to achieve a comfortable sitting posture.

[0006] To achieve the above objectives, this application proposes a seat for home-based aging-friendly applications, comprising: a seat cushion; a backrest; armrests on both sides of the top of the seat cushion; a support rod at the bottom of the seat cushion; a base connected to the bottom of the support rod; a moving device at the front end of the base bottom; a first control unit connected to the moving device at the base bottom; a guide device at the rear end of the base bottom; and a second control unit connected to the guide device at the base bottom. The guide device includes: a fixed axis perpendicular to the bottom surface of the base; a U-shaped guide seat connected to the fixed axis; and a guide wheel within the U-shaped guide seat. The second control unit includes: a double-ended cylinder disposed between the two U-shaped guide seats; and a reversing seat connected to the output end of the double-ended cylinder. The axial direction of the output shaft of the double-ended cylinder and the line connecting the centers of the two U-shaped guide seats are located in different x-planes.

[0007] The age-friendly chair for home use described in this application uses a second control unit connected to a guide device. The output end of a double-headed cylinder is connected to a reversing seat. After the user adjusts to a comfortable sitting posture, the double-headed cylinder is activated to make the reversing seat contact the U-shaped guide seat. Then, the U-shaped guide seat is pushed to rotate the rollers on both sides, forming a figure-eight shape, thereby locking the chair. This solves the problem in the prior art that age-friendly chairs cannot make minor adjustments to the chair after the elderly sit down to achieve a comfortable sitting posture.

[0008] As an improvement of the aforementioned reversing seat in this application, in order to achieve the installation and fixation of the reversing seat and facilitate the pushing of the end face of the U-shaped guide seat, the reversing seat includes: a clamping plate symmetrically arranged in the horizontal direction and clamping the output shaft of the double-headed cylinder and fixed by a pin; and a support plate connecting the clamping plate away from the end of the double-headed cylinder and parallel to the end face of the U-shaped guide seat.

[0009] As an improvement to the aforementioned moving device of this application, in order to prevent accidents during the process of the elderly moving towards the chair by holding the armrest, the moving device includes: a roller frame welded to both sides of the front end of the base and arranged along the x-axis; a directional roller installed in the roller frame; a rotating shaft welded to the directional roller and passing through the roller frame; and damping grooves sequentially arranged along the circumferential surface of the rotating shaft.

[0010] As an improvement to the damping groove described in this application, in order to gradually increase the resistance encountered by the chair during movement and eventually stop the movement, the damping groove includes: a first damping groove, a second damping groove, and a third damping groove with successively increasing depths, wherein the cross-sections of the first damping groove and the second damping groove are isosceles trapezoids with arc-shaped bottoms, and the cross-section of the third damping groove is a right trapezoid with arc-shaped bottoms.

[0011] As an improvement to the first control unit described above in this application, in order for the first control unit to control the moving device, the first control unit includes: an L-shaped support base connected to the bottom surface of the base; a U-shaped support plate disposed at the end of the L-shaped support base; an F-shaped support plate covering the opening of the U-shaped support plate; a T-shaped plate passing through the F-shaped support plate disposed in the closed space enclosed by the F-shaped support plate and the U-shaped support plate; a positioning post vertically disposed on the inner wall of the T-shaped plate; a compression spring covering the positioning post, with one end welded to the T-shaped plate and the other end welded to the U-shaped support plate; and a cylinder disposed between the F-shaped support plate and the U-shaped support plate.

[0012] Furthermore, in order to better release the compressive force on the spring during the extension and retraction of the cylinder, the extension and retraction direction of the cylinder output shaft is parallel to the axial direction of the positioning column.

[0013] Furthermore, control buttons are installed on the handrail to make it easier for the elderly to operate the cylinder.

[0014] The beneficial effects of this application are as follows: 1. The age-friendly chair for home use described in this application uses a second control unit connected to a guide device. The output end of a double-headed cylinder is connected to a reversing seat. After the user adjusts to a comfortable sitting posture, the double-headed cylinder is activated to make the reversing seat contact the U-shaped guide seat. Then, the U-shaped guide seat is pushed to rotate the rollers on both sides, forming a figure-eight shape, thereby locking the chair. This solves the problem in the prior art that age-friendly chairs cannot make minor adjustments to the chair after the elderly sit down to achieve a comfortable sitting posture.

[0015] 2. The first control device of this application is connected to the moving device. A U-shaped support plate at the end of the L-shaped support seat is embedded in an F-shaped support plate, forming a closed cavity. A cylinder is installed between the U-shaped support plate and the F-shaped support plate. The extension and retraction of the cylinder drives the U-shaped support plate to achieve relative movement with the F-shaped support plate, changing the volume of the closed cavity. During this process, the compression force of the spring in the closed cavity is gradually released, causing the spring to push the T-shaped plate against the inner wall of the F-shaped support plate while gradually approaching the damping groove on the rotating shaft of the moving device. When the end of the T-shaped plate is embedded in the damping groove, the connection between the first control device and the moving device is completed. Subsequently, as the elderly person moves towards the seat while holding the armrest, if the seat is pushed, the seat will move away from the elderly person. At this time, the rollers roll, causing the rollers to move. When the pivot of the sexual connection rotates, the T-shaped plate moves in different damping grooves. As the T-shaped plate moves from the first damping groove to the second damping groove, it needs to gradually rise along the slope of the first damping groove, at which point the compression of the spring increases. When the T-shaped plate moves to the slope of the second damping groove, the compression of the spring decreases. Since the depth of the second damping groove is greater than that of the first damping groove, the frictional force on the pivot when the T-shaped plate moves from the second damping groove to the third damping groove is greater than that when it moves from the first damping groove to the second damping groove. Furthermore, when the T-shaped plate moves to the third damping groove, the cross-section of the third damping groove is a right-angled trapezoid with an arc-shaped bottom. At this point, the T-shaped plate is blocked by the right-angled wall, preventing the pivot from continuing to rotate. This locks the moving device, ensuring that the chair does not easily slide when the elderly person is not fully seated, thus preventing accidents during the process of the elderly person sitting on the chair.

[0016] 3. The maximum distance that the rollers in the moving device of this application can move is the circumference of one rotation of the pivot. That is to say, when the first control device is working, the relative displacement between the chair and the elderly is extremely short. During this process, the chair increases resistance while preventing the chair from moving a large distance and causing the elderly to fall. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a chair used in a home-based aging-friendly scenario according to an embodiment of this application; Figure 2 This is a cross-sectional view of the damping groove in an embodiment of this application; Figure 3This is a schematic diagram of the structure of the second control unit in an embodiment of this application; Figure 4 This is a cross-sectional view of the first control unit in an embodiment of this application; Figure 5 This is a circuit schematic diagram from an embodiment of this application; Explanation of reference numerals in the attached figures: 1. Seat cushion; 2. Backrest; 3. Handrails; 4. Support rod; 5. Base; 6. Moving device; 61. Roller frame; 62. Directional roller; 63. Rotating shaft; 64. Damping groove; 641. First damping groove; 642. Second damping groove; 643. Third damping groove; 7. First control unit; 71. L-shaped support base; 72. U-shaped support plate; 73. F-shaped support plate; 74. T-shaped plate; 75. Positioning post; 76. Compression spring; 77. Cylinder; 8. Guiding device; 81. Fixed shaft; 82. U-shaped guide seat; 83. Guide wheel; 9. Second control unit; 91. Double-ended cylinder; 92. Directional switch seat; 921. Clamping plate; 922. Support plate; 10. Control buttons. Detailed Implementation

[0019] The following will be combined with the appendix Figures 1-5 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1: like Figure 1 , Figure 3 and Figure 5This illustration depicts a home-based aging-friendly chair, addressing the issue of limited adjustments for elderly users after sitting in the chair. The chair utilizes a second control unit 9 connected to a guide device 8, enabling locking and unlocking functions. Specifically, the guide device 8 includes a fixed shaft 81 perpendicular to the bottom surface of the base 5, a U-shaped guide seat 82 connecting to the fixed shaft 81, and guide wheels 83 within the U-shaped guide seat 82. The second control unit 9 includes a double-headed cylinder 91 positioned between the two U-shaped guide seats 82, and a reversing seat 92 connected to the output end of the double-headed cylinder 91. The axis of the double-headed cylinder 91's output shaft lies in a different x-plane from the line connecting the centers of the two U-shaped guide seats 82. This design allows the double-headed cylinder 91 to extend or retract, pushing the U-shaped guide seat 82 to rotate along the fixed shaft 81 via the reversing seat 92, thereby displacing the guide wheels 83 and forming a figure-eight configuration to lock the chair.

[0021] Furthermore, once the elderly person is seated and has adjusted to a comfortable posture, they can simply activate the dual-headed cylinder 91 via the control button 10 on the armrest 3. This causes the reversing seat 92 to contact the U-shaped guide seat 82 and rotate it, thus locking the seat. This design solves the problem in existing age-friendly seats where minor adjustments cannot be made after the elderly person sits down, allowing the elderly person to maintain a comfortable posture while the seat remains stable and does not move.

[0022] Example 2: like Figure 1 , Figure 2 and Figure 4 This illustration shows a home-based age-friendly chair application of this application. In order to prevent accidents during the elderly's use, the clever combination of the mobile device 6 and the first control unit 7 effectively prevents accidents during the elderly's use.

[0023] Furthermore, the moving device 6 includes a roller frame 61 welded to both sides of the front end of the base 5 and arranged along the x-axis, directional rollers 62 installed in the roller frame 61, a rotating shaft 63 welded to the directional rollers 62 and passing through the roller frame 61, and damping grooves 64 sequentially arranged along the circumferential surface of the rotating shaft 63. The damping grooves 64 include a first damping groove 641, a second damping groove 642, and a third damping groove 643 with progressively increasing depths. Their cross-sectional design causes the resistance experienced by the chair to gradually increase during movement, eventually stopping the movement.

[0024] Furthermore, gravity sensors are installed on the armrests and seat cushions. When an elderly person holds onto the seat, the gravity sensors detect the pressure exerted on the seat. At this time, the sensors form a closed loop with the first control unit 1, causing the cylinder to operate. The first control unit 7 includes an L-shaped support 71 connected to the bottom surface of the base 5, a U-shaped support plate 72 located at the end of the L-shaped support 71, an F-shaped support plate 73 covering the opening of the U-shaped support plate 72, and a T-shaped plate 74, a positioning post 75, a compression spring 76, and a cylinder 77 disposed in the closed space enclosed by the F-shaped support plate 73 and the U-shaped support plate 72. The extension and retraction of the cylinder 77 causes the U-shaped support plate 72 to move relative to the F-shaped support plate 73, gradually releasing the compression force of the compression spring 76 in the closed cavity. When the end of the T-shaped plate 74 is inserted into the damping groove 64, the connection between the first control device and the moving device is completed.

[0025] Furthermore, as the elderly person moves towards the seat cushion 1 while holding onto the armrest 3, if the seat is pushed, it will move away from the elderly person. At this time, the roller 62 will roll, causing the rotating shaft 63 to rotate. The T-shaped plate 74 moves through different damping grooves 64, and the resistance it encounters gradually increases until it is finally embedded in the third damping groove 643 and blocked by the right-angle wall, preventing the rotating shaft 63 from continuing to rotate and locking the moving device. This design ensures that the chair does not easily slide when the elderly person is not fully seated, effectively preventing accidents during the process of sitting down.

[0026] Example 3: like Figure 2 This illustration depicts a home-based age-friendly chair application of this invention. To prevent large displacements and ensure the safety of the elderly, the maximum distance that the roller 62 in the moving device 6 can move is the circumference of one rotation of the pivot 63. In other words, when the first control device 7 is operating, the relative displacement between the chair and the elderly person is extremely short. This design increases resistance while preventing large displacements, effectively ensuring the safety of the elderly. Even if the elderly person slightly pushes the chair while sitting or adjusting their posture, the chair will not suddenly slide due to excessive force, causing them to lose balance and fall. Therefore, the chair design of this invention not only improves the comfort of the elderly but also significantly enhances the safety and stability of the chair.

[0027] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chair for home aging-in-place scenario applications, comprising: Seat cushion (1); backrest (2); Armrests (3) are set on both sides of the top of the seat cushion (1); A support rod (4) is provided at the bottom of the seat cushion (1); a base (5) is connected to the bottom of the support rod (4); characterized in that a moving device (6) is provided at the front end of the bottom of the base (5); a first control unit (7) is provided at the bottom of the base (5) and connected to the moving device (6); a guide device (8) is provided at the rear end of the bottom of the base (5) and a second control unit (9) is provided at the bottom of the base (5) and connected to the guide device (8); wherein the guide device (8) includes: a fixed shaft (81) provided perpendicular to the bottom surface of the base (5); a U-shaped guide seat (82) connected to the fixed shaft (81) and a guide wheel (83) provided in the U-shaped guide seat (82); the second control unit (9) includes: a double-headed cylinder (91) provided between the two U-shaped guide seats (82); a reversing seat (92) connected to the output end of the double-headed cylinder (91); wherein the axial direction of the output shaft of the double-headed cylinder (91) and the line connecting the center of the two U-shaped guide seats (82) are in different x-direction horizontal planes.

2. The home aging-in-place scenario application's chair according to claim 1, characterized in that, The reversing seat (92) includes: a clamping plate (921) symmetrically arranged in the horizontal direction and clamping the output shaft of the double-headed cylinder (91) and fixed by a pin; and a support plate (922) connecting the clamping plate (921) away from the end of the double-headed cylinder (91) and parallel to the end face of the U-shaped guide seat (82).

3. The home aging-in-place scenario application's chair according to claim 1, wherein, The moving device (6) includes: a roller frame (61) welded to both sides of the front end of the base (5) and arranged along the x-axis; a directional roller (62) installed in the roller frame (61); a rotating shaft (63) welded to the directional roller (62) and passing through the roller frame (61); and damping grooves (64) sequentially arranged along the circumferential surface of the rotating shaft (63).

4. The home aging-in-place scenario application's chair according to claim 3, characterized in that, The damping groove (64) includes a first damping groove (641), a second damping groove (642), and a third damping groove (643) with increasing depths. The cross-sections of the first damping groove (641) and the second damping groove (642) are arc-bottom isosceles trapezoids, and the cross-section of the third damping groove (643) is an arc-bottom right trapezoid.

5. The home aging-in-place scenario application's chair according to claim 1, wherein, The first control unit (7) includes: an L-shaped support base (71) connected to the bottom surface of the base (5); a U-shaped support plate (72) disposed at the end of the L-shaped support base (71); an F-shaped support plate (73) covering the opening of the U-shaped support plate (72); a T-shaped plate (74) that passes through the F-shaped support plate (73) is disposed in the closed space enclosed by the F-shaped support plate (73) and the U-shaped support plate (72); a positioning post (75) vertically disposed on the inner wall of the T-shaped plate (74); a compression spring (76) covering the positioning post (75) and having one end welded to the T-shaped plate (74) and the other end welded to the U-shaped support plate (72); and a cylinder (77) disposed between the F-shaped support plate (73) and the U-shaped support plate (72).

6. The home aging-in-place scenario application's chair of claim 1, wherein, The extension and retraction direction of the cylinder (77) output shaft is parallel to the axis direction of the positioning column (75).

7. The chair for home-based aging-friendly applications according to claim 1, characterized in that, Control buttons (10) are provided on the handrail (3).

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