Leisure chair

Abstract

A leisure chair is used for solving the technical problems that a part of existing leisure chairs mentioned in the background technology can only keep the same posture for a long time when a user leans on a backrest for a rest, and the user may fall down when inclining. Comprising a seat plate and supporting legs fixedly arranged at the bottom of the seat plate, a leg support and a backrest are rotatably arranged on the seat plate, the backrest is of an internal hollow structure and is provided with two opposite openings, two expansion plates for leaning are slidably arranged in the backrest, and the two expansion plates are connected with the seat plate. The backrest is provided with two openings, part of plate surfaces of the two expansion plates correspondingly and slidably extend out of the backrest from the two openings, the two expansion plates are parallel to the leaning surface of the backrest, and two positioning assemblies are arranged on the backrest and correspondingly clamped and positioned with the two expansion plates respectively. The anti-falling leisure chair is simple in structure and mainly used for preventing the leisure chair from falling.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture processing, in particular to a leisure chair. Background Art

[0002] A leisure chair is a chair we use to enjoy our leisure time. Unlike formal dining or office chairs, this type of chair has a little personality, offering both visual and physical comfort. When people feel tired, they lean back on a leisure chair to relax and unwind.

[0003] There are some leisure chairs in the prior art. For example, the utility model patent document with authorization announcement number “CN212678720U” and patent name “A New Adjustable Leisure Chair” discloses a leisure chair comprising a seat plate, a backrest plate and a tension spring.

[0004] When the user needs to rest, he sits on the seat plate and leans back against the backboard, thereby tilting backwards to rest by the effect of the tension spring. However, some existing leisure chairs can only maintain the same posture for a long time when resting against the backrest, and the user may fall when tilting. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies of the existing technology and to propose a leisure chair for solving the technical problem mentioned in the background technology that some existing leisure chairs can only maintain the same posture for a long time when leaning against the backrest for rest, and may cause the user to fall when leaning.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A leisure chair comprises a seat plate and supporting legs fixed to the bottom thereof, wherein the seat plate is rotatably provided with a leg support and a backrest for placing the legs, the backrest is an internal hollow structure, and the backrest is provided with two opposite openings, two expansion plates for leaning are slidingly provided in the backrest, and part of the plate surfaces of the two expansion plates slide out of the two openings correspondingly to the backrest, and the two expansion plates are parallel to the leaning surface of the backrest, and two positioning components are provided on the backrest, and the two positioning components are respectively engaged with the two expansion plates for positioning.

[0008] Working principle:

[0009] First, the user slides the two expansion boards out of the two openings relative to each other, and then uses the two positioning components to snap the two expansion boards into place. When the user needs to lean their legs against the leg support, they can adjust the inclination angle of the leg support and then place their legs on it.

[0010] The beneficial effects of the utility model are:

[0011] During use of the utility model, the two expansion plates are extended out of the backrest to widen the backrest, thereby increasing the leaning area of ​​the backrest, allowing the user to adjust the posture when leaning and resting, thereby avoiding maintaining the same leaning posture for a long time and preventing the user from falling when leaning, making the user more comfortable when leaning and resting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of an embodiment of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the cross-section structure of the middle backrest.

[0014] Explanation of the accompanying drawings: seat plate 1, supporting leg 2, leg support 3, backrest 4, opening 5, expansion plate 6, snap-in groove 7, positioning piece 8, pull-out block 9, bolt 10, positioning block 11, snap-in piece 12, pull-out rod 13, first spring 14, airbag 15, air inlet 16, positioning groove 17, protective cover 18, snap-in block 19, limit groove 20, limit block 21, sliding groove 22, second spring 23, slider 24, first sliding groove 25, second sliding groove 26, connecting block 27, foot pedal 28, abutment block 29, abutment groove 30, shaft sleeve 31, third spring 32, abutment piece 33, first rotating shaft 34, second rotating shaft 35, gear 36, positioning plate 37, latch 38, through-rod 39. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 As shown, a leisure chair includes a seat plate 1 and supporting legs 2 fixed to the bottom thereof. The seat plate 1 is rotatably provided with a leg support 3 for placing legs and a backrest 4. The backrest 4 is an internal hollow structure and is provided with two opposite openings 5. Two expansion boards 6 for leaning are slidingly provided in the backrest 4. Parts of the two expansion boards 6 slide out of the two openings 5 ​​correspondingly to the backrest 4. Both expansion boards 6 are parallel to the leaning surface of the backrest 4. Two positioning components are provided on the backrest 4. The two positioning components are respectively engaged with the two expansion boards 6 for positioning. Figure 2 As shown, a limiting groove 20 is provided in the backrest 4, and a limiting block 21 is fixed on each expansion board 6, and both limiting blocks 21 are slidably arranged in the limiting groove 20. This design facilitates the smooth sliding of the expansion board 6, has a simple structure and a good effect.

[0017] During use of the present invention, the two extension plates 6 are extended out of the backrest 4 to widen the backrest 4, thereby increasing the leaning area of ​​the backrest 4, so that the user can adjust the posture when leaning and resting, thereby avoiding maintaining the same leaning posture for a long time and avoiding the user from falling when leaning, making the user more comfortable when leaning and resting.

[0018] like Figure 1 and Figure 2 As shown, the top of the expansion plate 6 is provided with a plurality of arc-shaped snap-in grooves 7 arranged along the sliding direction, and the positioning assembly includes a positioning member 8, a pull-out block 9 and a bolt 10. The positioning member 8 is an internal hollow structure and is fixed to the top of the backrest 4. A positioning block 11 is slidably provided in the positioning member 8, and a snap-in member 12 that can slide through the positioning member 8 and the top of the backrest 4 is fixed at the bottom of the positioning block 11. The bottom of the snap-in member 12 is an arc-shaped structure adapted to the snap-in groove 7. The pull-out block 9 is provided at the top of the positioning member 8, and a pull-out rod 13 that slides into the interior of the positioning member 8 and is fixed to the bottom of the pull-out block 9 is fixed. A first spring 14 is wound around the pull-out rod 13, one end of the first spring 14 is fixed to the positioning block 11, and the other end is fixed to the inner top wall of the positioning member 8. The bolt 10 is threaded through the positioning member 8 and is fixed to the positioning block 11. As shown Figure 1 and Figure 2As shown, the top of the backrest 4 is provided with two opposing positioning slots 17, each with a magnet-like inner wall. A protective cover 18 is provided on the top of the backrest 4 to house the positioning member 8. Two opposing clamping blocks 19 are provided at the bottom of the protective cover 18. These clamping blocks 19 are magnet-like structures and are correspondingly clamped into the two positioning slots 17. First, the user opens the protective cover 18, allowing the two clamping blocks 19 to be removed from the two positioning slots 17. Next, the user unscrews the two bolts 10 and then slides the two expansion plates 6 through the two openings 5 ​​to remove the backrest 4. During this process, as the clamping member 12 is inserted into the clamping slot 7, the expansion plates 6 continuously slide out of the backrest 4, squeezing the clamping member 12 upward through the curved clamping slot 7. This causes the clamping member 12 to push the pull rod 13 vertically upward through the positioning blocks 11, simultaneously compressing the first spring 14. When the expansion board 6 extends beyond the appropriate surface of the backrest 4, the user slightly moves the expansion board 6 back and forth so that the clip 12 snaps into place in the appropriate clip groove 7. At this point, the user screws in the two bolts 10, threading them through the two positioning members 8 and threading them into the two positioning blocks 11. The protective cover 18 is then placed on the two positioning members 8 at the top of the backrest 4, and the two clip blocks 19 snap into place in the two positioning grooves 17. This design makes it easy to widen the leaning area of ​​the backrest 4, making it more comfortable for the user to lean back and rest, and preventing them from falling due to tilting caused by adjusting their posture or maintaining the same posture for a long time. It also makes it easy to position the adjusted expansion board 6, while covering the positioning block 11 to prevent it from being exposed and causing bumps to the user. It also protects the positioning block 11 from excessive dust that could affect the positioning of the expansion board 6.

[0019] like Figure 1 and Figure 2 As shown, an airbag 15 is bonded to the expansion plate 6 and provided with an air inlet 16. When inflated, the airbag 15, which extends beyond the backrest 4, is flush with the backrest 4's reclining surface. When the expansion plate 6 extends beyond the backrest 4, the user can inflate the airbag 15 through the air inlet 16, causing it to swell and become flush with the backrest 4's reclining surface, allowing the user to lean back and rest. This design facilitates rest and offers excellent results with its simple structure.

[0020] like Figure 1As shown, a sliding groove 22 is provided in the leg support 3, a second spring 23 is fixed in the sliding groove 22, a slider 24 is fixed on the second spring 23 and slidably provided in the sliding groove 22, a first sliding groove 25 and a second sliding groove 26 are provided on the leg support 3, the first sliding groove 25 and the second sliding groove 26 are parallel to the sliding groove 22, a connecting block 27 is fixed on the slider 24 and slidably provided in the first sliding groove 25, a foot pedal 28 is fixed on the connecting block 27, and an abutment block 29 is fixed on the bottom of the leg support 3 and is connected to the second sliding groove 26. The connecting block 29 is provided with a plurality of abutment grooves 30 arranged in a line and parallel to and opposite to the second sliding groove 26. The slider 24 is fixed with a shaft sleeve 31 that slides through the second sliding groove 26 and is slidably arranged in the abutment block 29. A third spring 32 is fixed in the shaft sleeve 31. The third spring 32 is fixed with an abutment member 33 that slides through the shaft sleeve 31. One end of the abutment member 33 that passes through the shaft sleeve 31 is an arc-shaped structure. The leg support 3 is provided with a plurality of penetration holes along the direction of the sliding groove 22. The leg support 3 is provided with a penetration rod 39 that passes through any penetration hole and passes through the slider 24. To adjust the support height of the footrest 28, the user slides the footrest 28 along the extension direction of the first slot 25. During this process, the connecting block 27 slides within the first slot 25, and the slider 24 slides within the sliding slot 22, squeezing the spring within the sliding slot 22. Simultaneously, the slider 24 drives the sleeve 31 to slide within the second slot 26 and the abutment block 29. The third spring 32 within the sleeve 31 elastically expands and contracts, squeezing the abutment 33 and forcing it to penetrate the abutment slot 30. As the sleeve 31 moves, the abutment 33 is squeezed by the curved surface of the arcuate slot edge and penetrates the sleeve 31. During the sliding process, the elastic expansion and contraction of the third spring 32 forces the abutment 33 to re-enter the abutment slot 30. The operator then inserts the insertion rod 39 through any insertion hole and passes it through the slider 24. This design facilitates adjustment of the support height of the footrest 28 and is simple in structure and easy to operate.

[0021] like Figure 1As shown, the leg support 3 and the backrest 4 are respectively fixed with a first rotating shaft 34 and a second rotating shaft 35. The first rotating shaft 34 is rotatably mounted on the end of the seat plate 1 away from the backrest 4, and a gear 36 is fixed at both ends of the first rotating shaft 34. The end of the seat plate 1 provided with the backrest 4 is provided with two opposing positioning plates 37. The second rotating shaft 35 is rotatably mounted between the two positioning plates 37, and a gear 36 is fixed at both ends of the second rotating shaft 35. A pin 38 located on the seat plate 1 and the positioning plates 37 is inserted into the teeth gap of the gear 36. When it is necessary to position the leg support 3 and the backrest 4 after rotation adjustment, the user inserts the two pins correspondingly into the teeth gaps of the two gears 36 to engage and position them. This design facilitates the rotation and positioning of the leg support 3 and the backrest 4, and has a simple structure and is easy to operate.

[0022] Working principle:

[0023] When the user needs to lean on the backrest for a rest, the user can rotate the gear 36 on the second rotating shaft 35 . When the backrest 4 is rotated to a suitable tilt angle, the user inserts the latch 38 into the teeth gap of the gear 36 on the second rotating shaft 35 .

[0024] Next, the user opens the protective cover 18 and pulls the two clamping blocks 19 out of the two positioning slots 17 respectively. Then, the user unscrews the two bolts 10 respectively and slides the two expansion plates 6 out of the two openings 5 ​​to pull out the backrest 4 accordingly. During this process, when the clamping member 12 is inserted into the clamping slot 7, the expansion plate 6 continuously slides out of the backrest 4, and presses the clamping member 12 upward through the arc-shaped clamping slot 7, so that the clamping member 12 pushes the pull rod 13 vertically upward through the positioning block 11, and at the same time compresses the first spring 14. When the expansion plate 6 extends out of the appropriate surface of the backrest 4, the user slightly moves the expansion plate 6 back and forth so that the clamping member 12 is clamped and inserted into the appropriate clamping slot 7. At this time, the user inflates the airbag 15 through the air inlet 16, causing the airbag 15 to swell and be flush with the leaning surface of the backrest 4. Next, the user screws in two bolts 10, threading them through the two positioning members 8 and threading them into the two positioning blocks 11. Next, the user places the protective cover 18 over the two positioning members 8 at the top of the backrest 4, and engages the two engaging blocks 19 in the two positioning slots 17.

[0025] When the user needs to lean on the legs for support, the user can rotate the gear 36 on the first rotating shaft 34. When the leg support 3 is rotated to a suitable support angle, the user inserts the pin 38 into the teeth gap of the gear 36 on the first rotating shaft 34.

[0026] When the user needs to support their foot, they slide the footrest 28 along the extension direction of the first slide groove 25. During this process, the connecting block 27 slides in the first slide groove 25, and the slider 24 slides in the slide groove 22, squeezing the spring in the slide groove 22. At the same time, the slider 24 drives the sleeve 31 to slide in the second slide groove 26 and the abutment block 29. The third spring 32 in the sleeve 31 elastically expands and contracts, squeezing the abutment 33 and forcing it to penetrate the abutment groove 30. As the sleeve 31 moves, the abutment 33 is squeezed by the arc surface of the arc groove edge and penetrates the sleeve 31. During the sliding process, the elastic expansion and contraction of the third spring 32 squeezes the abutment 33 back into the abutment groove 30. Afterwards, the operator passes the penetration rod 39 through any penetration hole and passes the penetration rod 39 through the slider 24.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A leisure chair comprising a seat plate (1) and support legs (2) fixed to the bottom thereof, characterized in that: The seat plate (1) is rotatably provided with a leg support (3) for placing legs and a backrest (4), the backrest (4) is an internal hollow structure, and the backrest (4) is provided with two opposite openings (5), and two expansion plates (6) for leaning are slidably provided in the backrest (4), and part of the plate surfaces of the two expansion plates (6) slide out of the two openings (5) correspondingly to the backrest (4), and the two expansion plates (6) are parallel to the leaning surface of the backrest (4), and two positioning components are provided on the backrest (4), and the two positioning components are respectively and correspondingly engaged with the two expansion plates (6) for positioning.

2. The leisure chair according to claim 1, characterized in that: The top of the expansion plate (6) is provided with a plurality of arc-shaped snap-in grooves (7) arranged and distributed along the sliding direction. The positioning assembly includes a positioning member (8), a pull-out block (9) and a bolt (10). The positioning member (8) is an internal hollow structure and is fixed to the top of the backrest (4). A positioning block (11) is slidably provided in the positioning member (8). The bottom of the positioning block (11) is fixed with a snap-in member (12) that can slide through the positioning member (8) and the top of the backrest (4). The bottom of the snap-in member (12) is connected to the snap-in groove ( 7) an arc-shaped structure adapted thereto, the pull-out block (9) is arranged on the top of the positioning member (8), and a pull-out rod (13) is fixedly provided at the bottom of the pull-out block (9) and is slidably inserted into the interior of the positioning member (8) and fixedly connected to the positioning block (11), a first spring (14) is wound around the pull-out rod (13), one end of the first spring (14) is fixedly connected to the positioning block (11), and the other end thereof is fixedly connected to the inner top wall of the positioning member (8), and the bolt (10) is threadedly passed through the positioning member (8) and fixedly connected to the positioning block (11).

3. The leisure chair according to claim 1, characterized in that: An air bag (15) is adhered to the expansion plate (6), and an air inlet (16) is provided on the air bag (15). The air bag (15) extending out of the backrest (4) is flush with the leaning surface of the backrest (4) after being inflated.

4. The leisure chair according to claim 2, characterized in that: The top of the backrest (4) is provided with two opposite positioning grooves (17), the inner wall of each positioning groove (17) is a magnet structure, the top of the backrest (4) is provided with a protective cover (18) for covering the positioning member (8), the bottom of the protective cover (18) is provided with two opposite clamping blocks (19), the clamping blocks (19) are a magnet structure, and the two clamping blocks (19) are respectively clamped in the two positioning grooves (17) in a one-to-one corresponding manner.

5. The leisure chair according to claim 1, characterized in that: A limiting groove (20) is provided in the backrest (4), and a limiting block (21) is fixedly provided on each expansion plate (6), and both limiting blocks (21) are slidably arranged in the limiting groove (20).

6. The leisure chair according to claim 1, characterized in that: The leg support (3) is provided with a sliding groove (22), a second spring (23) is fixed in the sliding groove (22), a slider (24) is fixed on the second spring (23) and is slidably arranged in the sliding groove (22), the leg support (3) is provided with a first sliding groove (25) and a second sliding groove (26) which are opposite to each other, the first sliding groove (25) and the second sliding groove (26) are parallel to the sliding groove (22), a connecting block (27) is fixed on the slider (24) and is slidably arranged in the first sliding groove (25), a foot pedal (28) is fixed on the connecting block (27), a contact block (29) which is in conduction with the second sliding groove (26) is fixed on the bottom of the leg support (3), the The abutment block (29) is provided with a plurality of abutment grooves (30) arranged in a line and parallel to and opposite to the second slide groove (26); the slider (24) is fixed with a shaft sleeve (31) that slides through the second slide groove (26) and is slidably arranged in the abutment block (29); a third spring (32) is fixed in the shaft sleeve (31); the third spring (32) is fixed with an abutment member (33) that slides through the shaft sleeve (31); one end of the abutment member (33) that slides through the shaft sleeve (31) is an arc-shaped structure; the leg support (3) is provided with a plurality of through holes along the direction of the sliding groove (22); the leg support (3) is provided with a through rod (39) that passes through any through hole and passes through the slider (24).

7. The leisure chair according to claim 1, characterized in that: The leg support (3) and the backrest (4) are respectively fixed with a first rotating shaft (34) and a second rotating shaft (35); the first rotating shaft (34) is rotatably arranged at one end of the seat plate (1) away from the backrest (4), and gears (36) are fixed at both ends of the first rotating shaft (34); the seat plate (1) is provided with two opposite positioning plates (37) at one end of the backrest (4); the second rotating shaft (35) is rotatably arranged between the two positioning plates (37), and the gears (36) are fixed at both ends of the second rotating shaft (35); a pin (38) located on the seat plate (1) and the positioning plate (37) is inserted into the tooth gap of the gear (36).

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