Leisure chair with sitting depth convenient to adjust

Abstract

The utility model provides a leisure chair convenient for adjusting the sitting depth, which is used for solving the technical problems that the backrest of the existing leisure chair cannot be adjusted and cannot be attached to the back of a user according to different sitting postures of the user. The leisure chair comprises a seat plate, two first stress rods are fixedly arranged at the bottom end of the seat plate, second stress rods are adjustably arranged in the two first stress rods in a sliding mode, a backrest is fixedly arranged at one ends of the two second stress rods, a connecting shaft is rotationally arranged on the bottom side of the seat plate, and the connecting shaft is connected with the seat plate through a connecting rod. The connecting shaft penetrates through the first stress rod and the second stress rod, the connecting shaft rotates to limit whether the first stress rod and the second stress rod can move relatively or not, and the backrest can move close to or away from the air rod, so that the backrest can be attached to the back of a user when the user adopts different sitting postures.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a leisure chair with adjustable seat depth. Background Technology

[0002] A lounge chair is a chair that we use to enjoy our leisure time.

[0003] The backrest of a chair is designed to conform to the user's back and waist, thereby relieving fatigue. However, the backrests of existing lounge chairs are not adjustable. When the user occupies a small area of ​​the seat and sits far from the backrest, the backrest cannot conform to the user, requiring the user to actively lean back to the backrest, which is quite inconvenient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a leisure chair with adjustable seat depth, which solves the technical problem that the backrest of the existing leisure chair cannot be adjusted and cannot fit the user's back according to different sitting postures.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A recliner with adjustable seat depth includes a seat board. Two first force-bearing rods are fixedly provided at the bottom end of the seat board. A second force-bearing rod is slidably provided inside each of the two first force-bearing rods. A backrest is fixedly provided at one end of each of the two second force-bearing rods. A connecting shaft is rotatably provided on the bottom side of the seat board. The connecting shaft passes through the first force-bearing rods and the second force-bearing rods. The rotation of the connecting shaft can restrict whether the first force-bearing rods and the second force-bearing rods can move relative to each other.

[0007] Working principle:

[0008] When the user occupies a small area of ​​the seat and needs to move the backrest closer to the gas spring, the connecting shaft is rotated so that the connecting shaft does not restrict the movement of the second force rod. The backrest moves closer to the gas spring, and the backrest drives the second force rod to move. After the movement is completed, while keeping the backrest stationary, the connecting shaft is rotated to fix the second force rod, thereby fixing the backrest.

[0009] When the user occupies a large area of ​​the seat and needs to move the backrest away from the gas spring, the connecting shaft is rotated so that the connecting shaft does not restrict the movement of the second force rod. The backrest moves away from the gas spring, and the backrest drives the second force rod to move. After the movement is completed, while keeping the backrest stationary, the connecting shaft is rotated to fix the second force rod, thereby fixing the backrest.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. The backrest can move closer to or further away from the gas spring, and the backrest can still maintain a close fit when the user's sitting posture changes;

[0012] 2. The backrest can be locked by rotating the connecting shaft, which is quite convenient. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the connecting shaft mounting structure according to an embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the friction block structure of this utility model.

[0016] In the above figures: 10, gas spring; 11, first connecting sleeve; 12, first force-bearing rod; 13, force-bearing block; 14, sponge pad; 15, support rod; 16, headrest; 17, backrest; 18, armrest; 19, seat; 20, second force-bearing rod; 21, connecting shaft; 22, second connecting sleeve; 23, chair leg; 24, caster wheel; 25, mounting sleeve; 26, pressure rod; 27, elastic element; 28, working chamber; 29, limiting hole; 31, friction block; 32, contact groove; 33, third force-bearing rod. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] Example:

[0019] like Figure 1 As shown, a reclining chair with adjustable seat depth includes a seat 19. Two first support rods 12 are fixedly mounted on the bottom of the seat 19. Two second support rods 20 are slidably mounted within each of the two first support rods 12. A backrest 17 is fixedly mounted at one end of each of the two second support rods 20. The backrest 17 consists of two bent sections. This structure allows the backrest 17 to fit more closely to the user's waist. During use, one end of the backrest 17 is covered with mesh. A connecting shaft 21 is rotatably mounted on the bottom side of the seat 19. This connecting shaft 21 passes through the first support rods 12 and connects to the second support rods 10. The force bar 20 and the second force bar 20 are composed of three bent sections. The rotation of the connecting shaft 21 can restrict whether the first force bar 12 and the second force bar 20 can move relative to each other. Rotating the connecting shaft 21 can lock the backrest 17, which is convenient. The backrest 17 can move closer to or further away from the gas spring 10. When the user's sitting posture is different, the backrest 17 can still maintain a close fit. The top of the backrest 17 is fixed with a support rod 15, and the top of the support rod 15 is fixed with a headrest 16. Both ends of the seat board 19 are fixed with armrests 18, and the top of the armrests 18 is fixed with a sponge pad 14.

[0020] When the user occupies a small area of ​​the seat 19 and needs to move the backrest 17 closer to the gas spring 10, the connecting shaft 21 is rotated so that the connecting shaft 21 does not restrict the movement of the second force rod 20. The backrest 17 moves closer to the gas spring 10, and the backrest 17 drives the second force rod 20 to move. After the movement is completed, while keeping the backrest 17 stationary, the connecting shaft 21 is rotated to fix the second force rod 20, thereby fixing the backrest 17.

[0021] When the user occupies a large area of ​​the seat 19 and needs to move the backrest 17 away from the gas spring 10, the connecting shaft 21 is rotated so that the connecting shaft 21 does not restrict the movement of the second force rod 20, and the backrest 17 moves away from the gas spring 10. The backrest 17 drives the second force rod 20 to move. After the movement is completed, while keeping the backrest 17 stationary, the connecting shaft 21 is rotated to fix the second force rod 20, thereby fixing the backrest 17.

[0022] like Figure 2 As shown, two force-bearing blocks 13 are fixedly provided at the bottom of the seat plate 19. The connecting shaft 21 is rotatably disposed between the two force-bearing blocks 13. A working cavity 28 is provided through the interior of each first force-bearing rod 12 along the length direction. Limiting holes 29 are provided on the inner walls of both sides of each working cavity 28 to communicate with the outside. Two second force-bearing rods 20 are slidably disposed in the corresponding working cavities 28. Two contact grooves 32 are provided through the interior of each second force-bearing rod 20. The contact grooves 32 extend along the length direction of the second force-bearing rod 20. The connecting shaft 21 passes through the contact grooves 32 and the limiting holes 29. The diameter of the limiting holes 29 is the same as the width of the contact grooves 32.

[0023] like Figure 3 As shown, two third force-bearing rods 33 are symmetrically fixed on a section of the connecting shaft 21 within the working cavity 28. Friction blocks 31 are fixed at the ends of the third force-bearing rods 33. The friction blocks 31 are arch-shaped. After the two friction blocks 31 within the same working cavity 28 rotate, they can respectively abut against the inner wall of the first force-bearing rod 12 and the inner wall of the second force-bearing rod 20.

[0024] An elastic element 27 is provided between the section of the connecting shaft 21 inside the working cavity 28 and the inner wall of the working cavity 28. The elastic element 27 is a torsion spring. A total of four torsion springs are provided on the connecting shaft 21. An installation sleeve 25 is fixedly provided at the end of the connecting shaft 21. A pressure rod 26 is fixedly provided at one end of the installation sleeve 25.

[0025] The bottom end of the seat 19 is fixedly provided with a first connecting sleeve 11. The end of the first connecting sleeve 11 is rotatably provided with a gas spring 10. The other end of the gas spring 10 is embedded in the second connecting sleeve 22. Five chair legs 23 are fixedly provided on the outer periphery of the second connecting sleeve 22. Each chair leg 23 is provided with a universal wheel 24 at its end. This connection method is a conventional technical means, so it will not be described in detail in the instruction manual.

[0026] Working principle:

[0027] When the backrest 17 needs to be moved, the pressure rod 26 is rotated. The pressure rod 26 drives the connecting shaft 21 to rotate through the mounting sleeve 25. The connecting shaft 21 drives the third force-bearing rod 33 to rotate. The third force-bearing rod 33 drives the friction block 31 to rotate. The friction block 31 rotates and disengages from the first force-bearing rod 12 and the second force-bearing rod 20. The second force-bearing rod 20 moves relative to the first force-bearing rod 12. The second force-bearing rod 20 drives the backrest 17 to move. After moving to the appropriate position, the backrest 17 remains stationary. The pressure rod 26 drives the connecting shaft 21 to rotate through the mounting sleeve 25. The connecting shaft 21 drives the third force-bearing rod 33 to rotate. The third force-bearing rod 33 drives the friction block 31 to rotate. The friction block 31 rotates and abuts against the first force-bearing rod 12 and the second force-bearing rod 20. The second force-bearing rod 20 cannot rotate relative to the first force-bearing rod 12, thus fixing the backrest 17.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A reclining chair with adjustable seat depth, characterized in that, include: A seat (19) is provided with two first force-bearing rods (12) fixed at the bottom end of the seat (19). A second force-bearing rod (20) is slidably provided in both of the first force-bearing rods (12). A backrest (17) is fixed at one end of each of the two second force-bearing rods (20). A connecting shaft (21) is rotatably provided on the bottom side of the seat (19). The connecting shaft (21) passes through the first force-bearing rods (12) and the second force-bearing rods (20). The rotation of the connecting shaft (21) can restrict whether the first force-bearing rods (12) and the second force-bearing rods (20) can move relative to each other.

2. The recliner with adjustable seat depth according to claim 1, characterized in that: Two force-bearing blocks (13) are fixedly provided at the bottom of the seat plate (19). The connecting shaft (21) is rotatably disposed between the two force-bearing blocks (13). Each first force-bearing rod (12) has a working cavity (28) extending through it along the length direction. Each working cavity (28) has a limiting hole (29) on both sides of its inner wall communicating with the outside. Two second force-bearing rods (20) are slidably disposed in the corresponding working cavity (28). Each second force-bearing rod (20) has two contact grooves (32) extending through it along the length direction of the second force-bearing rod (20). The connecting shaft (21) passes through the contact groove (32) and the limiting hole (29).

3. A reclining chair with adjustable seat depth according to claim 2, characterized in that: The diameter of the limiting hole (29) is the same as the width of the contact groove (32).

4. A reclining chair with adjustable seat depth according to claim 2, characterized in that: The second force-bearing rod (20) consists of three bent sections.

5. A reclining chair with adjustable seat depth according to claim 4, characterized in that: The connecting shaft (21) is symmetrically fixed with two third force rods (33) in the working cavity (28). The end of the third force rod (33) is fixed with a friction block (31). The two friction blocks (31) in the same working cavity (28) can abut against the inner wall of the first force rod (12) and the inner wall of the second force rod (20) respectively after rotation.

6. A reclining chair with adjustable seat depth according to claim 4, characterized in that: An elastic element (27) is provided between the section of the connecting shaft (21) inside the working cavity (28) and the inner wall of the working cavity (28). An installation sleeve (25) is fixedly provided at the end of the connecting shaft (21), and a pressure rod (26) is fixedly provided at one end of the installation sleeve (25).

7. A reclining chair with adjustable seat depth according to claim 1, characterized in that: A support rod (15) is fixedly provided at the top of the backrest (17), and a headrest (16) is fixedly provided at the top of the support rod (15).

8. A reclining chair with adjustable seat depth according to claim 1, characterized in that: Both ends of the seat (19) are fixed with armrests (18), and the top of the armrests (18) is fixed with a sponge pad (14).

9. A reclining chair with adjustable seat depth according to claim 1, characterized in that: The bottom end of the seat (19) is fixedly provided with a first connecting sleeve (11), and the end of the first connecting sleeve (11) is rotatably provided with a gas spring (10). The other end of the gas spring (10) is embedded in the second connecting sleeve (22). Five chair legs (23) are fixedly provided on the outer periphery of the second connecting sleeve (22), and each chair leg (23) is provided with a universal wheel (24) at its end.

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