Portable and stable exoskeleton seat

Abstract

The invention discloses a portable and stable exoskeleton seat, and relates to the technical field of exoskeleton chairs, the portable and stable exoskeleton seat comprises a waist fixing assembly and two leg supporting assemblies, each leg supporting assembly comprises a thigh supporting part and a shank supporting part arranged at the lower end of the thigh supporting part, the stabilizing mechanisms are used for improving stability when a wearer sits, the locking mechanisms are used for limiting the positions of the stabilizing mechanisms, the foot sleeves are used for being worn on the feet of the wearer, the stabilizing mechanisms and the foot sleeves are arranged in two sets, each stabilizing mechanism comprises an abutting plate, and the abutting plates are used for abutting against the locking mechanisms. And one side of the pressing plate is fixedly connected with a first connecting rod. When the leg supporting device is used, after a wearer sits down, the ground of the abutting plate makes contact with the ground, the abutting plate has a large bottom area, the overall stability is improved by enlarging the contact area with the ground, shaking of the shank supporting part can be effectively reduced through a locking mechanism of the first connecting rod and the top protrusion, and the comfort level of the wearer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of exoskeleton seats, and in particular to a portable and stable exoskeleton seat. Background Art

[0002] The exoskeleton chair is an intelligent product that combines biomechanics and modern technology. It is designed based on ergonomics, can fit human joints, and uses robotic technology to replace human forces and eliminate biological fatigue. The exoskeleton chair is suitable for people who stand or walk for a long time, as well as the elderly and people with limited mobility, and can effectively improve the user's comfort and quality of life.

[0003] When using the exoskeleton chair, the user needs to fix the brackets and straps around the waist, thighs and feet. These brackets and straps form a stable support system. After wearing it, the user only needs to squat lightly, and the exoskeleton chair will support the user, allowing the user to sit down easily.

[0004] The disadvantages of the above existing technical solutions are that the calf support parts of the exoskeleton seat are all connected flexibly. In the sitting state, the entire seat actually relies on only two support points to maintain stability. When the legs move, the support rods will rotate around these two support points, resulting in poor stability of the seat. In order to ensure that the position of the hips does not change, the user needs to keep the body straight. After long-term use, muscle soreness may occur, affecting the user experience. Summary of the invention

[0005] The purpose of the present invention is to provide a portable and stable exoskeleton chair, which solves the problem that when the user is in a sitting state of the exoskeleton chair, in order to ensure that the position of the hips does not change, the user needs to keep the body straight all the time, which may cause muscle soreness after long-term use.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A portable and stable exoskeleton chair comprises a waist fixing assembly and two groups of leg supporting assemblies, each group of the leg supporting assemblies comprises a thigh supporting portion and a calf supporting portion arranged at the lower end of the thigh supporting portion, the device also comprises a stabilizing mechanism for improving stability when the wearer is sitting, a locking mechanism for limiting the position of the stabilizing mechanism and a foot cover for being worn at the foot position of the wearer, the stabilizing mechanism and the foot cover are provided in two groups, each group of the stabilizing mechanism comprises a pressure plate, one side of the pressure plate is fixedly connected to a first connecting rod, and the other side is fixedly connected to a second connecting rod, each group of the foot cover is arranged on the corresponding second connecting rod, the locking mechanism is provided in two groups, each group of the locking mechanism comprises an articulated limit block fixedly arranged at the lower end of the corresponding calf supporting portion for limiting the rotation angle of the first connecting rod, the first connecting rod of each group is movably articulated with the corresponding articulated limit block, and both sides of each group of the articulated limit blocks are provided with a locking assembly for limiting the first connecting rod and an elastic assembly for pushing the locking assembly to squeeze the first connecting rod.

[0008] As a further solution of the present invention: the angle between the first connecting rod and the pressure plate and the angle between the second connecting rod and the pressure plate are both greater than 90° and less than 180°.

[0009] As a further solution of the present invention: each group of the locking components includes two groups of sliding columns, each group of the articulated limit blocks are provided with through holes on both sides for guiding the sliding columns, each group of the sliding columns are slidably fitted in the corresponding through holes, each group of the elastic components are arranged at the end of the sliding column away from the center of the articulated limit block, each group of the sliding columns are provided with a top protrusion at the end close to the center of the articulated limit block, the edges of the top protrusions are provided with slopes, and each group of the first connecting rods are provided with locking grooves on both sides that match the shape of the top protrusions.

[0010] As a further solution of the present invention: each group of the elastic components includes extension blocks fixedly connected to both sides of the hinged limit block, and a spring is provided between each group of the extension blocks and the corresponding sliding column.

[0011] As a further solution of the present invention: the foot cover includes a heel strap movably connected to the second connecting rod, and the heel strap is cooperated with a foot fixing strap for surrounding and binding the wearer's foot.

[0012] As a further solution of the present invention: a seat cushion is fixedly provided on one side of the upper end of each group of thigh support parts, a leg fixing strap is provided on each group of seat cushions, and a second connecting strap is provided between the two groups of seat cushions.

[0013] As a further solution of the present invention: the waist fixing assembly includes a first connecting belt that is connected to the seat cushion, and the other end of the first connecting belt is slidably matched with a waist fixing strap.

[0014] As a further solution of the present invention: a sliding cavity is opened inside the upper end of the calf support part, and a limiting rod is slidably matched inside the sliding cavity. The size of the sliding cavity is smaller than the size of the limiting rod, and the upper end of the limiting rod is movably connected to a position near the lower end of the thigh support part.

[0015] As a further solution of the present invention: the thigh support part, the calf support part, the stabilizing mechanism, the articulated limit block, the extension block, the sliding column, and the limit rod are all made of carbon fiber composite materials.

[0016] As a further solution of the present invention: the surfaces of the thigh support part, the calf support part, the locking mechanism, and the stabilizing mechanism are all coated with a protective paint layer.

[0017] Beneficial effects of the present invention:

[0018] 1. In the present invention, when the wearer sits down, the first connecting rod, the pressure plate, and the second connecting rod rotate around the hinged limit block together, so that the first connecting rod contacts the two groups of top protrusions and cuts into the two groups of top protrusions. Under the squeezing action of the first connecting rod, the two groups of top protrusions push the connected sliding column backward, thereby compressing the spring until the top protrusion docks with the corresponding locking groove. The spring pushes the sliding column and the top protrusion to insert into the locking groove. At this time, the first connecting rod contacts the top wall inside the hinged limit block to achieve the limiting and locking effect of the first connecting rod. After sitting down, the pressure plate contacts the ground. The pressure plate has a large bottom area. By expanding the area in contact with the ground, the overall stability is improved. The locking mechanism of the first connecting rod and the top protrusion can effectively reduce the shaking of the calf support part and improve the comfort of the wearer.

[0019] 2. In the present invention, when the wearer stands up, the first connecting rod, the pressure plate and the second connecting rod jointly rotate in the opposite direction around the hinged limit block. At this time, the first connecting rod will cut out between the top protrusions, and the slope provided on the edge of the top protrusion is convenient for sliding out from the locking groove. After the first connecting rod is away from the top protrusion, the spring pushes the sliding column and the top protrusion to automatically reset, thus completing the unlocking operation of the first connecting rod, thereby facilitating the wearer to stand and walk. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention when the user is standing upright;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention when the user is in a sitting position;

[0023] Figure 3 yes Figure 1A schematic diagram of the partially enlarged structure at center A;

[0024] Figure 4 It is a schematic diagram of the longitudinal section structure of the locking mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the stabilizing mechanism of the present invention;

[0026] Figure 6 It is a rear view structural schematic diagram of the present invention.

[0027] In the figure: 1. thigh support part; 2. calf support part; 3. limit rod; 4. locking mechanism; 401. hinged limit block; 402. extension block; 403. spring; 404. slide column; 405. top protrusion; 5. stabilizing mechanism; 501. first connecting rod; 502. pressure plate; 503. second connecting rod; 504. locking groove; 6. foot cover; 601. heel strap; 602. foot fixing strap; 7. seat cushion; 8. leg fixing strap; 9. first connecting strap; 10. second connecting strap; 11. waist fixing strap. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-6 As shown, the present invention is a portable and stable exoskeleton chair, including a waist fixing component and two groups of leg support components, each group of leg support components includes a thigh support part 1 and a calf support part 2 arranged at the lower end of the thigh support part 1, and a seat cushion 7 is fixedly arranged on one side of the upper end of each group of thigh support parts 1. The seat cushion 7 is made of silicone plastic material and has a certain elastic deformation ability, which is convenient for adapting to the leg and buttocks shapes of different users. A leg fixing strap 8 is arranged on each group of seat cushions 7. When worn, the leg fixing strap 8 is fixed on the wearer's thigh to maintain the relative position of the seat cushion 7 and the thigh. A second connecting belt 10 is arranged between the two groups of seat cushions 7, and the connection of the two groups of seat cushions 7 is realized by the second connecting belt 10. A sliding cavity is opened inside the upper end of the calf support part 2, and a limit rod 3 is slidably matched inside the sliding cavity. The size of the sliding cavity is smaller than the size of the limit rod 3. The upper end of the limit rod 3 is movably connected to the position near the lower end of the thigh support part 1, so that the limit rod 3 can support the thigh support part 1.

[0030] The waist fixing assembly includes a first connecting belt 9 connected to the seat cushion 7, and the other end of the first connecting belt 9 is slidably matched with a waist fixing strap 11. Buckles are provided at both ends of the waist fixing strap 11, so as to facilitate the waist fixing strap 11 to be wrapped around and fixed near the wearer's waist.

[0031] The device further comprises a stabilizing mechanism 5 for improving stability when the wearer is sitting, a locking mechanism 4 for limiting the position of the stabilizing mechanism 5 and a foot cover 6 for being worn on the wearer's foot.

[0032] The stabilizing mechanism 5 and the foot cover 6 are provided in two groups, each group of the stabilizing mechanism 5 includes a pressure plate 502, one side of the pressure plate 502 is fixedly connected to the first connecting rod 501, and the other side is fixedly connected to the second connecting rod 503, and each group of the foot cover 6 is arranged on the corresponding second connecting rod 503. The angle between the first connecting rod 501 and the pressure plate 502 and the angle between the second connecting rod 503 and the pressure plate 502 are both greater than 90° and less than 180°. Figure 2 As shown, in a specific embodiment, the angle between the first connecting rod 501 and the pressure plate 502 and the angle between the second connecting rod 503 and the pressure plate 502 are both 120°. When the wearer is standing, it can be used as a connecting piece. When the wearer sits down, the pressure plate 502 will fit with the ground, thereby facilitating support for other components and improving stability during use.

[0033] There are two groups of locking mechanisms 4, each group of locking mechanisms 4 includes an articulated limit block 401 fixedly arranged at the lower end of the corresponding calf support part 2 for limiting the rotation angle of the first connecting rod 501, each group of first connecting rods 501 is movably hinged with the corresponding articulated limit block 401, and each group of articulated limit blocks 401 is provided with locking components for limiting the first connecting rod 501 and elastic components for pushing the locking components to squeeze the first connecting rod 501 on both sides.

[0034] Each set of locking components includes two sets of sliding columns 404. Through holes for guiding the sliding columns 404 are provided on both sides of each set of articulated stop blocks 401. Each set of sliding columns 404 is slidably fitted inside the corresponding through holes. Each set of elastic components is arranged at one end of the sliding column 404 away from the center of the articulated stop block 401, and the position of the sliding column 404 is maintained by the elastic components. A top protrusion 405 is provided at one end of each set of sliding columns 404 close to the center of the articulated stop block 401, and a slope is provided on the edge of the top protrusion 405. The slope is provided to facilitate the first connecting rod 501 to cut into between the two sets of top protrusions 405. Locking grooves 504 matching the shape of the top protrusions 405 are provided on both sides of each set of first connecting rods 501. The locking grooves 504 are squeezed by the top protrusions 405 to limit the position of the first connecting rod 501. Each set of elastic components includes extension blocks 402 fixedly connected to both sides of the hinged limit block 401 , and a spring 403 is provided between each set of extension blocks 402 and the corresponding sliding column 404 .

[0035] The foot cover 6 includes a heel strap 601 movably connected to the second connecting rod 503, and the heel strap 601 is matched with a foot fixing strap 602 for surrounding and binding the wearer's foot. When wearing, the wearer can put the foot into the foot fixing strap 602, and fix the fixed end of the foot fixing strap 602 so that the wearer's ankle is located between the foot fixing strap 602 and the heel strap 601, and the foot fixing strap 602 is arranged around the sole and the instep, so as to realize the wearing of the foot cover 6;

[0036] The materials used to make the thigh support 1, the calf support 2, the stabilizing mechanism 5, the hinged stop block 401, the extension block 402, the slide column 404, and the stop rod 3 are all carbon fiber composite materials. Carbon fiber composite materials have the characteristics of high strength, high modulus, corrosion resistance, and low density, and can effectively reduce the weight of the seat while providing stable support. The surfaces of the thigh support 1, the calf support 2, the locking mechanism 4, and the stabilizing mechanism 5 are all coated with a protective paint layer to improve the hardness and smoothness of their surfaces.

[0037] Working principle of the present invention: When in use, the wearer needs to wear the waist fixing strap 11, the leg fixing strap 8 and the foot cover 6 on the wearer's waist, thigh and foot in sequence. After wearing, when the wearer sits down, the calf support part 2 falls until the lower end of the calf support part 2 contacts the ground, and the angle between the upper end of the calf support part 2 and the lower end of the thigh support part 1 gradually decreases until the limit rod 3 contacts the bottom of the sliding cavity at the upper end of the calf support part 2, thereby supporting the thigh support part 1. At the same time, the first connecting rod 501, the pressure plate 502, and the second connecting rod 503 rotate together around the hinge limit block 401, so that the first connecting rod 501 contacts the two groups of top protrusions 405 and cuts into between the two groups of top protrusions 405. Under the squeezing action of the first connecting rod 501, the two groups of top protrusions 405 push the connected sliding column 404 to move backward, thereby compressing the spring 403 until the top protrusion 405 docks with the corresponding locking groove 504. The spring 403 pushes the sliding column 404 and the top protrusion 405 to insert into the locking groove 504. At this time, the first connecting rod 501 contacts the inner top wall of the hinge limit block 401, thereby achieving the limiting and locking effect of the first connecting rod 501. After sitting down, the pressing plate 502 contacts the ground. The pressing plate 502 has a large bottom area, which improves the overall stability by expanding the area in contact with the ground. The locking mechanism between the first connecting rod 501 and the top protrusion 405 can effectively reduce the shaking of the calf supporting part 2, thereby improving the comfort of the wearer.

[0038] When the wearer stands up, the thigh vertically drives the angle between the thigh support part 1 and the calf support part 2 to gradually increase, and the calf support part 2 gradually rises until the lower end of the calf support part 2 is away from the ground, and the first connecting rod 501, the pressure plate 502, and the second connecting rod 503 rotate around the hinge limit block 401 together. At this time, the first connecting rod 501 will cut out between the top protrusions 405, and the slope set on the edge of the top protrusion 405 facilitates sliding out from the locking groove 504. After the first connecting rod 501 is away from the top protrusion 405, the spring 403 pushes the sliding column 404 and the top protrusion 405 to automatically reset, thereby completing the unlocking operation of the first connecting rod 501, thereby facilitating the wearer to stand and walk.

[0039] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A portable and stable exoskeleton chair, comprising a waist fixing assembly and two sets of leg support assemblies, each set of the leg support assemblies comprising a thigh support portion (1) and a calf support portion (2) arranged at the lower end of the thigh support portion (1), characterized in that: Also includes: A stabilizing mechanism (5) for improving the stability of a wearer when sitting, a locking mechanism (4) for limiting the position of the stabilizing mechanism (5), and a foot cover (6) for being worn on the foot of the wearer, wherein the stabilizing mechanism (5) and the foot cover (6) are provided in two groups, each group of the stabilizing mechanism (5) comprises a pressing plate (502), one side of the pressing plate (502) is fixedly connected to a first connecting rod (501), and the other side of the pressing plate (502) is fixedly connected to a second connecting rod (503), and each group of the foot cover (6) is provided on the corresponding second connecting rod (503). ), the locking mechanism (4) is provided with two groups, each group of the locking mechanism (4) comprises an articulated limit block (401) fixedly arranged at the lower end of the corresponding calf support part (2) for limiting the rotation angle of the first connecting rod (501), the first connecting rod (501) of each group is movably hinged with the corresponding articulated limit block (401), and both sides of each group of the articulated limit blocks (401) are provided with a locking component for limiting the first connecting rod (501) and an elastic component for pushing the locking component to squeeze the first connecting rod (501).

2. A portable and stable exoskeleton chair according to claim 1, characterized in that: The included angle between the first connecting rod (501) and the pressing plate (502) and the included angle between the second connecting rod (503) and the pressing plate (502) are both greater than 90° and less than 180°.

3. A portable and stable exoskeleton chair according to claim 1, characterized in that: Each group of the locking components includes two groups of sliding columns (404), each group of the articulated limit blocks (401) are provided with through holes on both sides for guiding the sliding columns (404), each group of the sliding columns (404) are slidably fitted inside the corresponding through holes, each group of the elastic components are arranged at one end of the sliding columns (404) away from the center of the articulated limit blocks (401), each group of the sliding columns (404) are provided with a top protrusion (405) at one end close to the center of the articulated limit blocks (401), and the edges of the top protrusions (405) are provided with slopes, and each group of the first connecting rods (501) are provided with locking grooves (504) on both sides that match the shape of the top protrusions (405).

4. A portable and stable exoskeleton chair according to claim 1, characterized in that: Each group of the elastic components comprises extension blocks (402) fixedly connected to both sides of the hinged limit block (401), and a spring (403) is provided between each group of the extension blocks (402) and the corresponding sliding column (404).

5. A portable and stable exoskeleton chair according to claim 1, characterized in that: The foot cover (6) comprises a heel strap (601) movably connected to the second connecting rod (503), and the heel strap (601) is matched with a foot fixing strap (602) for surrounding and binding the wearer's foot.

6. A portable and stable exoskeleton chair according to claim 1, characterized in that: A seat cushion (7) is fixedly arranged on one side of the upper end of each set of the thigh support parts (1), a leg fixing strap (8) is arranged on each set of the seat cushions (7), and a second connecting strap (10) is arranged between the two sets of the seat cushions (7).

7. A portable and stable exoskeleton chair according to claim 6, characterized in that: The waist fixing assembly comprises a first connecting belt (9) which is connected to the seat cushion (7), and the other end of the first connecting belt (9) is slidably matched with a waist fixing strap (11).

8. A portable and stable exoskeleton chair according to claim 7, characterized in that: A sliding cavity is provided inside the upper end of the calf support part (2), and a limiting rod (3) is slidably fitted inside the sliding cavity. The size of the sliding cavity is smaller than the size of the limiting rod (3), and the upper end of the limiting rod (3) is movably connected to a position near the lower end of the thigh support part (1).

9. A portable and stable exoskeleton chair according to claim 1, characterized in that: The thigh support part (1), the calf support part (2), the stabilizing mechanism (5), the hinged limit block (401), the extension block (402), the sliding column (404), and the limit rod (3) are all made of carbon fiber composite materials.

10. A portable and stable exoskeleton chair according to claim 1, characterized in that: The surfaces of the thigh support part (1), the calf support part (2), the locking mechanism (4) and the stabilizing mechanism (5) are all coated with a protective paint layer.

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