Portable ergonomic seat fitting waist

Abstract

The portable ergonomic seat comprises a seat cushion and a waist support backrest, a central shaft is arranged between the seat cushion and the waist support backrest, two ends of the central shaft are movably connected with end seats, a first connecting groove is axially formed in the outer wall surface of the central shaft, a first connecting strip is mounted at one end of the seat cushion, and a second connecting strip is mounted at the other end of the seat cushion. The first connecting strips are slidably arranged in the first connecting grooves, second connecting grooves are axially formed in the end seats, third connecting grooves are formed in the positions, right opposite to the second connecting grooves, of the waist support backrest, the second connecting grooves and the third connecting grooves are combined to form positioning channels, and positioning strips are inserted into the positioning channels. And locking assemblies for pressing the positioning strips are mounted on the outer side end surfaces of the end seats. The portable waist support chair is simple in structure, the waist support backrest and the seat cushion are detachably arranged, the waist support backrest can rotate with the end seat as the center until the waist support backrest gets close to the seat cushion, the size is greatly reduced in a folding mode, and carrying is convenient.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to a portable ergonomic chair that conforms to the waist. Background Technology

[0002] Currently, for some people who sit for long periods of time, such as office workers or students, the prolonged use of computers for work or study, with their bodies in a forward-leaning sitting posture without lumbar support, can easily lead to lumbar and abdominal strain.

[0003] Although a lumbar support chair has emerged in the existing technology, the lumbar support backrest and seat cushion of this product are fixed as one piece, forming a fixed "L" shape. This results in a large size, making it inconvenient to carry. Furthermore, if any part of the lumbar support backrest or seat cushion is damaged, the entire device needs to be replaced, increasing costs. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a portable ergonomic chair that fits the waist, with a detachable lumbar support backrest and seat cushion, and can be folded, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a portable ergonomic chair that conforms to the waist, including a seat cushion and a lumbar support backrest. A central shaft is provided between the seat cushion and the lumbar support backrest. End seats are movably connected to both ends of the central shaft. A first connecting groove is axially provided on the outer wall surface of the central shaft. A first connecting strip is installed at one end of the seat cushion and is slidably disposed in the first connecting groove. A second connecting groove is axially provided on each end seat. A third connecting groove is provided on each lumbar support backrest directly opposite the second connecting groove. The second and third connecting grooves are combined to form a positioning channel. A positioning strip is inserted into each positioning channel. A locking component is installed on the outer end face of each end seat to press the positioning strip tightly.

[0006] As a preferred technical solution, both ends of the central shaft are provided with grooves, and bearings are embedded in the inner wall of the grooves. A shaft is installed in the inner ring of each bearing, and the other end of the shaft is fixedly connected to the end seat.

[0007] As a preferred technical solution, a first limiting block is installed on the outer wall surface of the shaft, and a second limiting block is installed on the inner ring surface of the groove, with the first limiting block and the second limiting block being set to abut against each other.

[0008] As a preferred technical solution, the cross-sections of the first connecting groove, the first connecting strip, the second connecting groove, and the third connecting groove are all trapezoidal, and the cross-sections of the positioning channel and the positioning strip are funnel-shaped.

[0009] As a preferred technical solution, both ends of the first connecting strip are configured to contact the end faces opposite to the end seats.

[0010] As a preferred technical solution, the outer ring surface of the end seat is provided with axial inlet and outlet grooves.

[0011] As a preferred technical solution, the locking components all include a screw and a nut. The screw is installed on the end face of the outer side of the end seat, and the nut is threaded onto the screw. One end face of the nut is set to abut against the end face of the outer side of the positioning strip.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure, and the lumbar support backrest and seat cushion are detachable. After the end seat rotates and the inlet / outlet groove is aligned with the first connecting groove, the first connecting strip can be directly removed along the inlet / outlet groove, which is convenient for replacing the seat cushion. After removing the nut, the positioning strip can be removed from the second and third connecting grooves, which is convenient for disassembling the lumbar support backrest, increasing its adaptability. Moreover, the lumbar support backrest can rotate around the end seat until it moves towards the seat cushion. The folding method greatly reduces the volume and makes it easy to carry. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model after the nut is removed;

[0016] Figure 3 This is a schematic diagram of the installation structure of the shaft of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the seat cushion and lumbar support backrest of this utility model.

[0018] Among them, 1. seat cushion; 2. lumbar support backrest; 3. central shaft; 4. end seat; 5. inlet / outlet groove; 6. screw; 7. nut; 8. positioning strip; 9. groove; 10. bearing; 11. shaft; 12. first limiting block; 13. second limiting block; 14. third connecting groove; 15. first connecting strip. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a portable ergonomic chair that conforms to the waist, including a seat cushion 1 and a lumbar support backrest 2. A central shaft 3 is provided between the seat cushion 1 and the lumbar support backrest 2. End seats 4 are movably connected to both ends of the central shaft 3. A first connecting groove is axially provided on the outer wall surface of the central shaft 3. A first connecting strip 15 is installed at one end of the seat cushion 1 and is slidably disposed in the first connecting groove. A second connecting groove is axially provided on each end seat 4. A third connecting groove 14 is provided on each lumbar support backrest 2 opposite to the second connecting groove. The second connecting groove and the third connecting groove 14 are combined to form a positioning channel. A positioning strip 8 is inserted into each positioning channel. A locking component is installed on the outer end surface of each end seat 4 to press the positioning strip 8 tightly. The lumbar support backrest is bent towards the central shaft to conform to the curve of the waist.

[0023] In this embodiment, both ends of the central shaft 3 are provided with grooves 9, and bearings 10 are embedded in the inner wall of the grooves 9. A shaft 11 is installed in the inner ring of the bearing 10, and the other end of the shaft 11 is fixedly connected to the end seat 4.

[0024] In this embodiment, a first limiting block 12 is installed on the outer wall surface of the shaft 11, and a second limiting block 13 is installed on the inner ring surface of the groove 9. The first limiting block 12 is set to abut against the second limiting block 13.

[0025] In this embodiment, the cross-sections of the first connecting groove, the first connecting strip 15, the second connecting groove, and the third connecting groove 14 are all trapezoidal, and the cross-sections of the positioning channel and the positioning strip 8 are funnel-shaped. The seat cushion can be positioned on the central axis through the trapezoidal first connecting groove and the first connecting strip, while the lumbar support backrest can be positioned through the funnel-shaped positioning channel and the positioning strip.

[0026] In this embodiment, both ends of the first connecting strip 15 are in contact with the end face opposite to the end seat 4, thereby positioning the positioning strip and preventing the positioning strip from moving longitudinally.

[0027] In this embodiment, the outer ring surface of the end seat 4 is provided with an axial groove 5, through which the seat cushion can be easily disassembled.

[0028] In this embodiment, the locking components all include screws 6 and nuts 7. The screws 6 are all installed on the outer end face of the end seat 4, and the nuts 7 are all threaded onto the screws 6. One end face of the nuts 7 is set to abut against the outer end face of the positioning strip 8. The positioning strip can be easily disassembled and positioned by rotating the nuts.

[0029] When in use, the lumbar support backrest can be lifted up. The rotation of the lumbar support backrest drives the end seat and shaft. As the lumbar support backrest continues to rotate, the first limit block on the shaft will abut against the second limit block, thereby limiting the lumbar support backrest so that it can bear the weight of the waist.

[0030] When not in use, rotate the lumbar support backrest toward the seat cushion until it folds onto the seat cushion, greatly reducing its size and making it easy to carry.

[0031] When the seat cushion is damaged, rotate the end seat until the inlet / outlet groove on the end seat is aligned with the first connecting groove. At this point, the seat cushion can be pulled outward. The movement of the seat cushion drives the first connecting strip, allowing the first connecting strip to be removed outward along the inlet / outlet groove, which facilitates the disassembly of the seat cushion.

[0032] After the lumbar support backrest is damaged, the nut can be rotated and unscrewed from the screw to pull out the positioning strip. Once the positioning strip is no longer obstructing the lumbar support backrest, it can be removed directly, which facilitates the disassembly of the lumbar support backrest and increases its adaptability.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A portable ergonomic seat for fitting around the waist, characterised in that: The utility model provides a seat backrest and waist support, which comprises a seat cushion (1) and a waist support backrest (2), a central shaft (3) is arranged between the seat cushion (1) and the waist support backrest (2), end seats (4) are movably connected to both ends of the central shaft (3), a first connecting groove is axially arranged on the outer wall surface of the central shaft (3), a first connecting strip (15) is installed at one end of the seat cushion (1), the first connecting strip (15) is slidably arranged in the first connecting groove, a second connecting groove is axially arranged on each end seat (4), a third connecting groove (14) is arranged on the waist support backrest (2) opposite to the second connecting groove, the second connecting groove and the third connecting groove (14) are combined to form a positioning channel, a positioning strip (8) is inserted into the positioning channel, and a locking assembly is installed on the outer end surface of each end seat (4) to press and fix the positioning strip (8).

2. The portable ergonomic seat with a fitted waist according to claim 1, characterized in that: Grooves (9) are arranged at both ends of the central shaft (3), bearings (10) are embeddedly installed on the inner wall surfaces of the grooves (9), shaft rods (11) are installed in the inner rings of the bearings (10), and the other ends of the shaft rods (11) are fixedly connected with the end seats (4).

3. The portable ergonomic seat with a fitted waist according to claim 2, characterized in that: First limiting blocks (12) are installed on the outer wall surfaces of the shaft rods (11), second limiting blocks (13) are installed on the inner ring surfaces of the grooves (9), and the first limiting blocks (12) are in abutting contact with the second limiting blocks (13).

4. The portable ergonomic seat with a fitted waist of claim 1, wherein: The first connecting groove, the first connecting strip (15), the second connecting groove and the third connecting groove (14) are all in trapezoidal structure, and the positioning channel and the positioning strip (8) are both in funnel structure.

5. The portable ergonomic seat with a fitted waist of claim 1, wherein: The two ends of the first connecting strip (15) are in contact with the end faces of the end seats (4) opposite to each other.

6. The portable ergonomic seat with a fitted waist of claim 1, wherein: An inlet and outlet groove (5) is axially arranged on the outer ring surface of each end seat (4).

7. The portable ergonomic seat with a fitted waist of claim 1, wherein: Each locking assembly comprises a screw rod (6) and a nut (7), the screw rod (6) is installed on the end face outside the end seat (4), the nut (7) is threadedly connected with the screw rod (6), and the end face of the nut (7) is in abutting contact with the end face outside the positioning strip (8).

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