An adjustable stool for assisting standing

Abstract

This invention belongs to the field of stool technology, specifically relating to a height-adjustable stool for assisting standing, comprising: a Y-shaped base including three supporting arms; the upper surface of each supporting arm is a supporting plane; chamfered edges are present on opposite sides of the supporting plane; the width of the extended end of the supporting plane is greater than the width at its base; a base; and a support assembly including a movable rod and a fixed sleeve; the movable rod is movably mounted on the fixed sleeve; the upper end of the movable rod is connected to a connection port at the center of the Y-shaped base, and the lower end of the fixed sleeve is fixedly connected to the base. The height-adjustable stool in this design allows for straddle use and height adjustment as needed, assisting workers who stand for long periods, alleviating lower limb swelling and varicose veins; when made of metal, it is more robust and durable, and absorbs static electricity. Height control is unnecessary, reducing bacterial transmission and cross-infection among mobile users.

Description

Technical Field

[0001] This invention belongs to the field of stool technology, specifically relating to a height-adjustable stool that assists in standing. Background Technology

[0002] People with leg problems and those who stand for long periods of time (such as bartenders, teachers, sculptors, painters, pastry chefs, hairdressers, cashiers, cooks, dishwashers, kitchen helpers, vegetable washers, doctors, nurses, factory workers, maintenance engineers, electricians, waiters / waitresses, cashiers, factory workers, outdoor enthusiasts, etc.) are prone to a series of problems in their legs due to gravity, muscle fatigue, and poor blood circulation, leading to lower limb swelling, varicose veins, and fatigue from standing for long periods of time.

[0003] In existing technologies, weight is typically supported by a stool or leg support brace to prevent and alleviate problems such as lower limb venous issues and muscle fatigue. However, existing stools on the market are inconvenient to move and adjust in height, while existing leg support braces generally need to be worn on the body, which presents inconvenience in use.

[0004] Therefore, it is necessary to design a height-adjustable stool to assist in standing. Summary of the Invention

[0005] To address the aforementioned problems in existing technologies, this solution provides a height-adjustable stool for assisting standing.

[0006] The technical solution adopted in this invention is as follows: A height-adjustable stool for assisting standing includes: The Y-shaped support includes three supporting arms; the upper surface of each supporting arm is a supporting plane; there are chamfered edges on opposite sides of the supporting plane; the width of the extended end of the supporting plane is greater than the width at the root. The base has an anti-slip pad on the bottom and is designed for placement on the ground. The support assembly includes a movable rod and a fixed sleeve; the movable rod is vertically and movablely mounted on the fixed sleeve; the upper end of the movable rod is connected to the connection port at the center of the Y-shaped seat, and the lower end of the fixed sleeve is fixedly connected to the base.

[0007] Optional: A buffer pad is installed above the Y-shaped seat; the buffer pad is Y-shaped, and the bottom surface of the buffer pad is provided with a groove that matches the Y-shaped seat; Alternatively, a tray may be mounted above the Y-shaped seat; bolts may pass through bolt holes in the Y-shaped seat and connect to the tray.

[0008] Optional: The thickness of the support arm decreases continuously from the center of the Y-shaped seat outwards.

[0009] Optionally, the side and / or lower surface of the support crossarm is provided with heat dissipation holes.

[0010] Optionally: the base includes a conical base plate and a central base; the central base is located at the bottom center of the conical base plate; the anti-slip pad includes an anti-slip sheet and an anti-slip ring, the anti-slip sheet and the anti-slip ring are located on the same plane; the anti-slip ring is located at the edge of the conical base plate, and the anti-slip sheet is located on the central base.

[0011] Optionally: The bottom of the conical base plate is provided with multiple rolling components, each rolling component including a housing, a compression spring, a ball socket, and a rolling ball; the housing is connected to the base, the ball socket is slidably disposed inside the housing and abuts against the housing by the compression spring; the rolling ball is rotatably disposed at the lower part of the ball socket, and the lower part of the rolling ball extends below the housing; when not in use, the rolling ball contacts the ground and lifts the base by the compression spring, so that the base is in a suspended state; when in use, the base moves down and contacts the ground, while compressing the compression spring.

[0012] Optional: The support assembly may be an electric lifting rod, a nitrogen cylinder lifting rod, a pneumatic lifting rod, or a threaded screw lifting rod.

[0013] Optionally: When the support assembly is a threaded screw lifting rod: the movable rod is a threaded rod, and the fixed sleeve is threadedly connected to the movable rod; a pin is provided on the wall of the fixed sleeve.

[0014] Optionally: When the support assembly is an electric lifting rod: the movable rod has a hollow structure and its lower end is connected to a threaded sleeve; the threaded sleeve is slidably fitted with the fixed sleeve; a lead screw is provided inside the fixed sleeve, the lead screw is threadedly connected to the threaded sleeve and is driven by a motor at the lower end of the fixed sleeve.

[0015] Optionally: When the support assembly is a pneumatic lifting rod: the fixed sleeve is tubular, the lower end of the movable rod extends out of the fixed sleeve and connects to the base, and the upper end connects to the upper piston. The upper piston is sealed to the inner wall of the fixed sleeve. Nitrogen gas is present above the upper piston and connected to the natural environment below. The movable rod is a hollow structure with built-in nitrogen gas. A lower piston is installed inside the movable rod. The lower piston is connected to the lower end of the connecting rod. The upper end of the connecting rod passes through the movable rod and connects to the retainer at the upper part of the fixed sleeve. A connecting channel is provided inside the tube wall of the movable rod. The connecting channel connects the upper end and the lower end of the movable rod. An air plug is provided at the lower end of the connecting channel. The air plug is controlled by a pedal to open and close the nitrogen gas. When the air plug is open, the nitrogen gas above and below the lower piston can flow to each other. At this time, when the external force of the human body's weight compresses the fixed sleeve downward, the nitrogen gas is compressed. When the downward external force is removed, the nitrogen gas pushes the fixed sleeve upward. When the air plug is closed, the nitrogen gas above and below the upper piston no longer flows, thereby locking the position of the fixed sleeve.

[0016] The beneficial effects of this invention are as follows: 1. The height-adjustable stool in this solution can be adjusted according to the user's height, providing support for those who stand for long periods, and alleviating problems such as lower limb swelling and varicose veins. In addition, this height-adjustable stool can be made entirely of metal, making it sturdy and durable, absorbing static electricity, and relieving pressure on the legs of people who stand for long periods. At the same time, it can also be used as a stool when lowered to a certain height. 2. The adjustable stool in this solution uses a Y-shaped seat, which can be straddled, avoiding the problem of ordinary stools being too wide and affecting standing. 3. The height-adjustable stool in this solution can be adjusted using support components such as electric lifting rods, nitrogen cylinder lifting rods, pneumatic lifting rods, or threaded screw lifting rods. The support components can be controlled without human intervention, reducing the spread of bacteria and cross-infection among mobile users. The stool surface has less contact with the skin, which is more conducive to ventilation and coolness in summer. In addition, a removable soft pad can be added to the stool surface in winter. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this scheme or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a structural diagram of the adjustable stool that assists in standing in this solution; Figure 2 This is a schematic diagram of the Y-shaped seat; Figure 3 This is a schematic diagram of the structure of the tray and the Y-shaped seat; Figure 4 This is a structural diagram of the base; Figure 5 This is a schematic diagram of the scrolling component; Figure 6 This is a diagram showing the connection between the pedal and the pneumatic lifting rod. Figure 7 This is a schematic diagram of the structure of a threaded lead screw lifting rod; Figure 8 This is a structural diagram of an electric lifting boom; Figure 9 This is a schematic diagram of the pneumatic lifting rod. Figure 10 This is a schematic diagram of the nitrogen cylinder lifting rod.

[0019] In the diagram: 1-Buffer pad; 2-Y-shaped seat; 21-Support plane; 22-Chamfered edge; 23-Connection port; 24-Heat dissipation hole; 25-Bolt hole; 3-Support assembly; 31-Moving rod; 32-Fixed sleeve; 34-Motor; 35-Lead screw; 36-Threaded sleeve; 37-Air plug head; 38-Lower piston; 39-Upper piston; 4-Pedal; 5-Base; 51-Conical seat plate; 52-Anti-slip ring; 53-Center seat; 54-Anti-slip plate; 6-Rolling assembly; 61-Outer shell; 62-Compression spring; 63-Ball socket seat; 64-First retaining ring; 65-Rolling ball; 66-Second retaining ring; 67-Ball; 7-Tray; 8-Reversing switch valve. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this solution without creative effort are within the protection scope of this solution.

[0021] Example like Figures 1 to 10 As shown, this embodiment designs a standing adjustable stool, including a Y-shaped seat 2, a base 5, a support component 3, and other components.

[0022] The Y-shaped seat 2 is Y-shaped and has three supporting arms. The ends of the three supporting arms are connected together to form a Y shape. The angle between adjacent supporting arms is 100-150 degrees. The upper surface of each supporting arm is a supporting plane 21. When straddling the Y-shaped seat 2, one supporting arm extends between the thighs, and the supporting planes 21 of the other two supporting arms provide upward support for the buttocks, thereby supporting the buttocks of the human body.

[0023] The lower surface of the support crossarm of the Y-shaped seat 2 is an inclined slope, thereby improving the support strength. The Y-shaped seat 2 can be made of high-strength plastic, carbon fiber, titanium alloy, stainless steel, solid wood, fiberglass, plexiglass, aluminum alloy, and other materials to ensure strength.

[0024] Each support arm has chamfered edges 22 on opposite sides of its support plane 21 to avoid sharp edges causing slippage to the user and improve comfort during use.

[0025] The width of the extended end of the support plane 21 is greater than the width at the root; thus, it fits the curve of the human groin better and improves comfort during use.

[0026] The thickness of the supporting crossarm decreases continuously from the center of the Y-shaped seat 2 outwards, which not only improves the structural strength at the center of the Y-shaped seat 2, but also allows the supporting crossarm to be processed into a hollow Y-shaped structure, reducing the material used in the Y-shaped seat 2 and reducing its weight.

[0027] The side and / or lower surface of the supporting crossarm is provided with heat dissipation holes 24, which can be used to reduce weight. When the user straddles the Y-shaped seat 2, the heat dissipation holes 24 can be used to improve heat dissipation, avoid excessive local heat on the legs, and reduce sweating.

[0028] When the temperature drops in winter, a cushioning pad 1 can be installed above the Y-shaped seat 2; the cushioning pad 1 is Y-shaped, and the bottom surface of the cushioning pad 1 is provided with a groove that matches the Y-shaped seat 2; the cushioning pad 1 can be detachably assembled onto the Y-shaped seat 2, which can not only keep the temperature, but also improve the comfort during use.

[0029] In addition, a tray 7 can be installed above the Y-shaped base 2; when the tray 7 needs to be installed, bolts are passed through the bolt holes 25 of the Y-shaped base 2 and connected to the tray 7. The tray 7 not only allows the adjustable stool to be converted into a regular round stool, but also serves as a table for placing utensils. The bolt holes 25 and ventilation holes 24 are optional, not mandatory.

[0030] The support assembly 3 connects the Y-shaped seat 2 and the base 5, and supports the Y-shaped seat 2. The support assembly 3 includes a movable rod 31 and a fixed sleeve 32. The movable rod 31 is movably mounted on the fixed sleeve 32. The upper end of the movable rod 31 is connected to the connection port 23 at the center of the Y-shaped seat 2, and the lower end of the fixed sleeve 32 is fixedly connected to the base 5. By changing the height of the movable rod 31, the height of the adjustable stool can be adjusted.

[0031] The support component 3 can be an electric lifting rod, a nitrogen cylinder lifting rod, a pneumatic lifting rod, or a threaded screw lifting rod. In scenarios where height adjustment can be achieved without manual intervention, an electric lifting rod can be selected for control via a foot-operated power switch or voice commands. Alternatively, a nitrogen cylinder lifting rod, threaded screw, or pneumatic lifting rod can be used for control via an existing foot-operated valve. A nitrogen cylinder lifting rod is preferred for adjusting the lifting position, allowing control via the pedal 4 at the base 5.

[0032] like Figure 7 As shown, when the support assembly 3 is a threaded screw jack: the movable rod 31 is a threaded rod, and the fixed sleeve 32 is an internally threaded tube and is threadedly connected to the movable rod 31.

[0033] like Figure 8As shown, when the support assembly 3 is an electric lifting rod: the movable rod 31 has a hollow structure and its lower end is connected to the threaded sleeve 36; the threaded sleeve 36 is slidably fitted with the fixed sleeve 32; a lead screw 35 is provided inside the fixed sleeve 32, and the lead screw 35 is threadedly connected to the threaded sleeve 36 and is drivenly connected to the motor 34 at the lower end of the fixed sleeve 32.

[0034] like Figure 9 As shown, when the support assembly 3 is a pneumatic lifting rod: the fixed sleeve 32 is tubular, the lower end of the movable rod 31 extends out of the fixed sleeve 32 and connects to the base, and the upper end connects to the upper piston 39. The upper piston 39 is sealed to the inner wall of the fixed sleeve 32. Nitrogen gas is present above the upper piston 39, and the lower end is connected to the natural environment. The movable rod 31 is a hollow structure with built-in nitrogen gas. A lower piston 38 is provided inside the movable rod 31. The lower piston 38 is connected to the lower end of the connecting rod, and the upper end of the connecting rod passes through the movable rod 31 and connects to the retainer at the upper part of the fixed sleeve 32. A connecting channel is provided inside the tube wall, connecting the upper and lower ends of the movable rod 31. An air valve head 37 is located at the lower end of the connecting channel, controlled by the pedal 4 to open and close the nitrogen flow. When the air valve head 37 is open, the nitrogen above and below the lower piston 38 can flow to each other. At this time, when the external force of the human body's weight compresses the fixed sleeve 32 downwards, the nitrogen is compressed; when the downward force is removed, the nitrogen pushes the fixed sleeve 32 upwards. When the air valve head 37 is closed, the nitrogen above and below the upper piston 39 no longer flows, thus locking the position of the fixed sleeve 32. Figure 10 As shown, when the support component 3 is a nitrogen cylinder lifting rod: both the rod chamber and the rodless chamber of the nitrogen cylinder are connected to the air pump through a reversing switch valve. The air pump is connected to a nitrogen source. When the air pump starts, the lifting and lowering control of the nitrogen cylinder lifting rod is realized through the reversing of the reversing switch valve.

[0035] The base 5 includes a conical base plate 51 and a central seat 53; the central seat 53 is fixedly disposed at the bottom center of the conical base plate 51. An anti-slip pad is provided on the bottom of the base 5 for placement on the ground to increase load-bearing capacity; the anti-slip pad prevents slippage between the base 5 and the ground. Specifically, the anti-slip pad includes an anti-slip sheet 54 and an anti-slip ring 52, which are located on the same plane; the anti-slip ring 52 is disposed at the edge of the conical base plate 51, and the anti-slip sheet 54 is disposed on the central seat 53.

[0036] The upper surface of the base 5 has a sloping structure, which not only improves the comfort during use, but also allows for fine-tuning of the overall height of the stool by adjusting the control components of the base 5.

[0037] Multiple rolling components 6 are provided at the bottom of the conical seat 51, arranged in a ring. The rolling components 6 assist in the movement of the adjustable stool. When the user is not sitting on the adjustable stool, the rolling components 6 support the stool in a suspended state, thus facilitating movement; when the user sits on the adjustable stool, the rolling components 6 are compressed, causing the base 5 to contact the ground, thus achieving anti-slip.

[0038] The rolling assembly 6 includes a housing 61, a compression spring 62, a ball socket 63, and a rolling ball 65. The upper end of the housing 61 is fixedly connected to the base 5 to support the base 5. The ball socket 63 has a flat upper end and a groove at its lower end, and is slidably disposed within the housing 61. The upper end of the ball socket 63 abuts against the housing 61 via the compression spring 62. The sum of the elastic forces of all the compression springs 62 is greater than the overall weight of the lifting stool, but less than the sum of the weight of the lifting stool and the user, so that the compression springs 62 can support the lifting stool in a suspended state. The rolling ball 65 is rotatably disposed in the groove at the lower part of the ball socket 63, and the lower part of the rolling ball 65 extends below the housing 61 to contact the ground.

[0039] When the adjustable stool is not in use (i.e., the user is not sitting on it), the rolling ball 65 contacts the ground and lifts the base 5 through the compression spring 62, keeping the base 5 and the entire adjustable stool suspended in the air, thus facilitating the movement of the adjustable stool on the ground. When the adjustable stool is in use (i.e., the user is sitting on it), the user's weight will press down on the adjustable stool, causing the base 5 to move down and contact the ground, compressing the compression spring 62. At this time, the base 5 contacts the ground, thus achieving anti-slip.

[0040] The advantages of the height-adjustable stool in this embodiment are as follows: 1. For professionals who stand for long periods, such as doctors, it's essential to reduce the burden on their legs and alleviate the weight-bearing strain. Additionally, it can assist in standing for various purposes, including bartending, teaching, sculpting, painting, pastry making, hairdressing, cashiering, cooking, dishwashing, kitchen work, vegetable washing, and for those engaged in outdoor activities. It can also reduce leg pressure and lower the risk of lower limb swelling and varicose veins. For those who sit at a desk for extended periods, adjusting the straddle and sitting posture on a height-adjustable stool can reduce fatigue, lessen the burden on the gluteal muscles, and adjust the angle of the head, neck, and lower back.

[0041] 2. The main body of the adjustable stool is made of metal, which is sturdy and durable, can absorb static electricity, and has high reliability and safety.

[0042] 3. The adjustable stool can be used in a straddle position, allowing the legs to leverage the ground and thus enabling the body to exert greater force, making it suitable for jobs requiring high strength. Simultaneously, the straddle position allows for greater height, with less impact on arm length and height, minimizing disruption to work and facilitating power exertion. Furthermore, it can be lowered to a certain height and used as a seat.

[0043] 4. Various structures such as electric lifting rods, nitrogen cylinder lifting rods, pneumatic lifting rods, and threaded screw lifters can be adopted to meet the needs of different groups of people and different areas. For example, when doctors are performing surgery, they cannot adjust the height of the lifting stool by hand. In this case, electric lifting rods can be selected so that the height can be adjusted by foot pedal, reducing the spread of bacteria and cross-infection among mobile personnel.

[0044] 5. In addition, the structure of this solution meets the requirements of high lifting and moving frequency. When a screw jack is used, the screw lifting height range is wide; when an electric lifting rod is used, the electric lifting accuracy is high.

[0045] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation; it is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the scope of this technology.

Claims

1. A height-adjustable stool for assisting standing, characterized in that: include: Y-shaped seat (2) includes three support arms; the upper surface of each support arm is a support plane (21). The support plane (21) has chamfered edges (22) on opposite sides; the width of the extended end of the support plane (21) is greater than the width at the root. The base (5) has an anti-slip pad on the bottom and is used for placing on the ground; The support assembly (3) includes a movable rod (31) and a fixed sleeve (32); the movable rod (31) is movable and can be raised and lowered on the fixed sleeve (32); the upper end of the movable rod (31) is connected to the connection port (23) at the center of the Y-shaped seat (2), and the lower end of the fixed sleeve (32) is fixedly connected to the base (5).

2. The adjustable stool for assisting standing according to claim 1, characterized in that: A buffer pad (1) is installed above the Y-shaped seat (2); the buffer pad (1) is Y-shaped, and the bottom surface of the buffer pad (1) is provided with a groove that matches the Y-shaped seat (2); Alternatively, a tray (7) may be mounted above the Y-shaped seat (2); bolts may pass through bolt holes (25) in the Y-shaped seat (2) and connect to the tray (7).

3. The adjustable stool for assisting standing according to claim 1, characterized in that: The thickness of the supporting cross arm decreases continuously from the center of the Y-shaped seat (2) outwards to reduce weight and improve aesthetics.

4. The adjustable stool for assisting standing according to claim 1, characterized in that: The side and / or lower surface of the support arm is provided with heat dissipation holes (24) to reduce weight.

5. The adjustable stool for assisting standing according to any one of claims 1-4, characterized in that: The base (5) includes a conical base plate (51) and a center seat (53); the center seat (53) is located at the bottom center of the conical base plate (51); the anti-slip pad includes an anti-slip sheet (54) and an anti-slip ring (52), the anti-slip sheet (54) and the anti-slip ring (52) are located on the same plane; the anti-slip ring (52) is located at the edge of the conical base plate (51), and the anti-slip sheet (54) is located on the center seat (53).

6. The adjustable stool for assisting standing according to claim 5, characterized in that: The bottom of the conical base plate (51) is provided with multiple rolling components (6). The rolling components (6) include a housing (61), a compression spring (62), a ball socket (63), and a rolling ball (65). The housing (61) is connected to the base (5). The ball socket (63) is slidably disposed inside the housing (61) and abuts against the housing (61) by the compression spring (62). The rolling ball (65) is rotatably disposed at the lower part of the ball socket (63), and the lower part of the rolling ball (65) extends to the bottom of the housing (61). When not in use, the rolling ball (65) contacts the ground and lifts the base (5) by the compression spring (62), so that the base (5) is in a suspended state. When in use, the base (5) moves down and contacts the ground, while compressing the compression spring (62).

7. The adjustable stool for assisting standing according to any one of claims 1-4, characterized in that: The support assembly (3) adopts an electric lifting rod, a nitrogen cylinder lifting rod, a pneumatic lifting rod, or a threaded screw lifting rod.

8. The adjustable stool for assisting standing according to claim 7, characterized in that: When the support component (3) is a threaded screw lifting rod: the movable rod (31) is a threaded rod, and the fixed sleeve (32) is threadedly connected to the movable rod (31).

9. The adjustable stool for assisting standing according to claim 7, characterized in that: When the support component (3) is an electric lifting rod: the movable rod (31) is a hollow structure and its lower end is connected to the threaded sleeve (36); the threaded sleeve (36) is slidably fitted with the fixed sleeve (32); a lead screw (35) is provided inside the fixed sleeve (32), the lead screw (35) is threadedly connected to the threaded sleeve (36) and is connected to the motor (34) at the lower end of the fixed sleeve (32).

10. The adjustable stool for assisting standing according to claim 7, characterized in that: When the support assembly (3) is a pneumatic lifting rod: the fixed sleeve (32) is tubular, the lower end of the movable rod (31) extends out of the fixed sleeve (32) and connects to the base, and the upper end connects to the upper piston (39). The upper piston (39) is sealed to the inner wall of the fixed sleeve (32). The upper piston (39) has nitrogen gas above it and is connected to the natural environment below it. The movable rod (31) is a hollow structure with built-in nitrogen gas. A lower piston (38) is provided inside the movable rod (31). The lower piston (38) is connected to the lower end of the connecting rod. The upper end of the connecting rod passes through the movable rod (31) and is connected to the fixture at the upper part of the fixed sleeve (32). The tube wall of 31) is provided with a connecting channel, which connects the upper end and the lower end of the movable rod (31). At the lower end of the connecting channel, there is a gas plug (37). The gas plug (37) is controlled by the pedal (4) to open and close the nitrogen gas. When the gas plug (37) is open, the nitrogen gas above and below the lower piston (38) can flow to each other. At this time, when the external force of the human body weight compresses the fixed sleeve (32) downward, the nitrogen gas is compressed. When the downward external force is removed, the nitrogen gas pushes the fixed sleeve (32) upward. When the gas plug (37) is closed, the nitrogen gas above and below the upper piston (39) no longer flows, thereby locking the position of the fixed sleeve (32).

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