Deck chair with adjustable chair back

Abstract

The technical scheme belongs to the technical field of reclining chairs, and particularly relates to a reclining chair with an adjustable chair back, which comprises a chair frame main body, the chair frame main body comprises a support frame and a chair seat plate, and the chair seat plate is mounted on the support frame and extends forwards equivalent to the support frame; the chair back plate is hinged to the rear portion of the supporting frame, and a U-shaped supporting rod is hinged to the rear side of the chair back plate; the level adjusting assembly comprises an adjusting part arranged on the U-shaped supporting rod and a transverse positioning part fixed to the supporting frame, and a plurality of angle adjusting grooves are formed in the side, facing the transverse positioning part, of the adjusting part, so that the transverse positioning part can be matched with the different angle adjusting grooves in an embedded mode and used for adjusting the angle of the chair back plate; the chair back angle can be freely adjusted, and the comfort and the angle adaptability of the chair back of the deck chair are improved.

Description

Technical Field

[0001] The present technical solution relates to the technical field of reclining chairs, and particularly refers to a reclining chair with an adjustable backrest. Background Art

[0002] A reclining chair is a piece of furniture designed for rest and relaxation, usually having an inclined or adjustable backrest, an ergonomic seat, and soft armrests. Depending on ergonomics and comfort, it is designed to conform to the body curves of a person. By its adjustment ability, it can achieve semi - reclined, semi - seated, or fully flat - lying positions, thus providing a comfortable experience as a modern household item.

[0003] In existing reclining chairs, in order to support the raised backrest with tubular equipment in the semi - reclined sitting position, there is often a significant limitation, that is, the angle of the backrest is not adjustable. After long - term use, it often makes people feel uncomfortable and fatigued, with poor comfort and adaptability, thus needing improvement. Summary of the Invention

[0004] The present technical solution aims to improve the problem of poor adaptability caused by the limited angle of the backrest of the reclining chair, and provides a reclining chair with an adjustable backrest.

[0005] The purpose of the present technical solution is achieved as follows:

[0006] A reclining chair with an adjustable backrest includes a main chair frame. The main chair frame includes a support frame, and also includes a seat board which is installed on the support frame and extends forward relative to the support frame.

[0007] A backrest board is hinged to the rear of the support frame, and a U - shaped support rod is hinged to the rear side of the backrest board.

[0008] A grading component. The grading component includes an adjusting part arranged on the U - shaped support rod and a horizontal positioning part fixed to the support frame. The adjusting part is provided with a plurality of angle - adjusting grooves on the side facing the horizontal positioning part, so that the horizontal positioning part can be fitted corresponding to different angle - adjusting grooves for adjusting the angle of the backrest board.

[0009] Through the above - mentioned technical solution, when the reclining chair with an adjustable backrest is in normal use, the support frame on the main chair frame stably supports. The seat board is installed on the support frame and extends forward for the user to lie on and sit. The backrest board is hinged to the rear of the support frame, and a U - shaped support rod is hinged to its rear side. Among them, the grading component includes an adjusting part arranged on the U - shaped support rod and a horizontal positioning part fixed to the support frame. By rotating the U - shaped support rod, different adjusting grooves are aligned with the horizontal positioning rod below for fitting, freely adjusting the angle of the backrest, improving the comfort of the reclining chair and the adaptability of the backrest angle of the reclining chair.

[0010] Preferably, the notch direction of the angle adjustment groove along the distribution direction slopes obliquely downward towards the position of the horizontal positioning part, and the shape of the angle adjustment groove is adapted to that of the horizontal positioning part.

[0011] Through the above technical solution, the notch of the angle adjustment groove slopes obliquely downward along its distribution direction, directly facing the position of the horizontal positioning part, ensuring that the horizontal positioning part can smoothly slide in and be firmly locked during fitting. At the same time, the shape of the angle adjustment groove is designed to be adapted to that of the horizontal positioning part, ensuring a firm fit between the two, reducing the friction and resistance during adjustment, and also enhancing the stable support of the chair backrest at different angles, making the adjustment process smoother and less prone to dislocation, and reducing the adjustment difficulty to a certain extent.

[0012] Preferably, one inner wall of the angle adjustment groove along the fitting direction is an arc wall, and the arc direction of the arc wall is such that the groove width of the angle adjustment groove is set to be constricted towards the through end direction.

[0013] Through the above technical solution, the groove width of the angle adjustment groove gradually decreases towards the through end direction, forming a constricted structure, so that once the horizontal positioning part is embedded in the angle adjustment groove, it can be more firmly held in the groove and is not easily loosened or detached due to external forces, thereby enhancing the overall stability and safety of the reclining chair.

[0014] Preferably, at least five angle adjustment grooves are provided, and the angles of the chair backrest corresponding to the fitting of different angle adjustment grooves with the horizontal positioning part are set to be 100° - 160°.

[0015] Through the above technical solution, the adjustable angle range of the chair backrest is limited between 100° and 160°. At least five angle adjustment grooves are used in combination to provide multiple chair backrest angle options, meeting the needs of different users for the comfort of the reclining chair, realizing the switching between the upright sitting position and the semi - reclining position, making the adjustment of the chair backrest angle more flexible and precise, and further improving the applicability of the reclining chair.

[0016] Preferably, a connecting piece for clamping the support frame is provided at the lower part of the seat board, and the connecting piece is hinged to the seat board.

[0017] Through the above technical solution, the connecting piece clamps the support frame from the lower side of the support frame, and its upper end extends towards the seat board. The seat board is hinged to the connecting piece through a bolt, thereby realizing the rotational adjustment of the seat board.

[0018] Preferably, both the seat board and the chair backrest include two side support rods and a cross support rod rotatably arranged between the two side support rods, and a chair cloth is covered between the two side support rods on both sides.

[0019] Through the above technical solution, the overall structure of the seat board and the backrest board is mainly composed of side support rods on both sides, establishing the maximum width contour of the recliner. A plurality of horizontal support rods are arranged between the side support rods on both sides, which are used to enhance the load-bearing capacity and stability of the recliner. The chair cloth is connected to the side support rods on both sides for sitting and lying.

[0020] Preferably, the side support rod has an arrangement groove, and both sides of the chair cloth are clamped in the arrangement groove.

[0021] Through the above technical solution, the chair cloth is fixed by being clamped in the arrangement grooves on the side support rods on both sides, and the embedded part of the chair cloth is squeezed and positioned, increasing the overall aesthetic degree of the recliner and improving the fixing stability of the chair cloth.

[0022] Preferably, a reinforcing rod is provided at the front end of the seat board, and the reinforcing rod is fixed between the side support rods on both sides.

[0023] Through the above technical solution, the reinforcing rod is arranged corresponding to the user's ankle part at the front end of the seat board and is close to the ground support position, forming an additional support structure, which can share and bear the pressure generated by the user's sitting and lying, effectively resist deformation, and enhance the load-bearing capacity and structural stability of the seat board.

[0024] Preferably, both sides of the support frame have symmetrically arranged armrest parts.

[0025] Through the above technical solution, the armrest part and the support frame adopt an integrated design, which can bear greater pressure and weight. The armrest part enriches the functionality of the recliner, provides an additional support point for the user, and enhances the comfort and practicality of the recliner.

[0026] The prominent and beneficial technical effects of this technical solution compared with the prior art are as follows:

[0027] 1. In this technical solution, a grading component is arranged between the seat board and the backrest board. By rotating the U-shaped support rod, different adjustment grooves on the adjustment part are aligned with the horizontal positioning rod below for fitting, freely adjusting the backrest angle, improving the comfort of the recliner, and enhancing the adaptability of the backrest angle of the recliner;

[0028] 2. In this technical solution, at least five adjustment grooves are provided, increasing the adjustable range of the backrest board to meet different angle requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall structural schematic diagram of this embodiment;

[0030] Figure 2 is the partial structural schematic diagram of this embodiment;

[0031] Figure 3 is for this embodiment Figure 2 partial enlarged schematic diagram;

[0032] Figure 4 Another perspective schematic diagram of this embodiment; Figure 2 Another perspective schematic view;

[0033] Figure 5 For this embodiment Figure 4 Partial enlarged schematic diagram;

[0034] Figure 6 Schematic diagram of the minimum adjustment angle of the chair backrest in the embodiment;

[0035] Figure 7 Schematic diagram of the maximum adjustment angle of the chair backrest in the embodiment.

[0036] Reference numerals: 1, support frame; 2, seat board; 3, chair backrest; 4, grading component; 41, adjustment part; 42, horizontal positioning part; 5, armrest part; 6, U-shaped support rod; 7, angle adjustment groove; 8, arc wall; 9, connecting piece; 10, side support rod; 11, horizontal support rod; 12, chair cloth; 13, arrangement groove; 14, strengthening rod. Detailed implementation manners

[0037] The following further elaborates on the detailed implementation manners of the technical solution in conjunction with the accompanying drawings.

[0038] Embodiment:

[0039] Refer to Figure 1 , a reclining chair with an adjustable backrest, including a chair frame body, which includes a support frame 1, a seat board 2 and a chair backrest 3. Both sides of the support frame 1 have armrest parts 5, and they are symmetrically arranged on both sides of the seat board 2. The height of the armrest part 5 is higher than the height of the seat board 2. The seat board 2 is fixedly connected to the front side of the support frame 1, extends forward away from the support frame 1, and its front end bends downward and cooperates with the support frame 1 to achieve the stability of the overall placement of the chair frame body. The chair backrest 3 is located behind the seat board 2 and is hinged to the support frame 1, and the hinge axis is arranged horizontally.

[0040] Refer to Figure 2 and Figure 3 , both the seat board 2 and the chair backrest 3 include two side support rods 10 and several horizontal support rods 11. The positions of the two side support rods 10 are parallel and symmetrical, and several horizontal support rods 11 are spaced along the length direction of the side support rods 10. Each horizontal support rod 11 is rotatably connected by being respectively embedded between the two side support rods 10 at both ends. In this embodiment, the situation where three horizontal support rods 11 are provided on the seat board 2 and two horizontal support rods 11 are provided on the chair backrest 3 is shown.

[0041] The seat plate 2 is provided with a reinforcing rod 14, which is arranged at the downward bending portion of the front end of the seat plate 2, and the two ends of the reinforcing rod 14 are fixed between the side supporting rods 10 located at the opposite sides by bolts.

[0042] The side support rods 10 on both sides are covered with a chair cloth 12, and the chair cloth 12 is located above the horizontal support rod 11. The chair cloth 12 is fixed in a manner that the side support rods 10 have a distribution groove 13, which is opened on the upper end surface of the side support rods 10. The two sides of the chair cloth 12 are engaged in the corresponding distribution grooves 13 on both sides. The engagement method is to embed the distribution grooves 13 and then press them. Alternatively, the side support rods 10 on both sides can be wrapped with the chair cloth 12 and fixed with stitches, or fixed by gluing.

[0043] The specific hinged connection between the seat plate 2 and the support frame 1 is that the seat plate 2 is provided with a connecting piece 9, and two connecting pieces 9 are provided. The two connecting pieces 9 correspond to the two side support rods 10 one by one. The connecting piece 9 is preferably a U-shaped connecting piece, which is clamped on the lower side of the support frame 1, and the upper part extends to the corresponding sides of the side support rods 10. The pin shaft passes through the connecting piece 9 and the side support rods 10, and the backrest plate 3 rotates around the axial direction of the pin shaft. Based on the clearance space left between the backrest plate 3 and the support frame 1, the backrest plate 3 can be folded against the seat plate 2 after rotation.

[0044] See also Figure 4 and Figure 5 The backrest board 3 is provided with a U-shaped support rod 6, which is hinged on the rear side of the backrest board 3, and the hinge axis is parallel to the hinge axis of the backrest board 3. The backrest board 3 is adjusted relative to the seat board 2. A level adjustment component 4 is arranged between the two, which includes an adjustment part 41 and a horizontal positioning part 42. The horizontal positioning part 42 is arranged on the rear side of the support rod, and its length direction is parallel to the hinge axis of the U-shaped support rod. There are two adjustment parts 41, and the two adjustment parts 41 are fixed on one side of the U-shaped support rod close to the horizontal positioning part 42; each adjustment part 41 is provided with a plurality of angle adjustment slots 7, and the angle adjustment slots 7 on each adjustment part 41 are shown in this embodiment. In the case where there are at least five grooves 7, the groove direction of each angle adjustment groove 7 along the distribution direction is inclined downward toward the position of the horizontal positioning portion 42, and each angle adjustment groove 7 has a curved wall 8, which is arranged on the inner wall of one side of the corresponding angle adjustment groove 7 along the fitting direction. The curved surface direction makes the angle adjustment groove 7 have a narrowing setting in the groove width and groove through-end direction. The groove width and shape of the angle adjustment groove 7 are adapted to the width and shape of the horizontal positioning portion 42. The seat back plate 3 angle (the angle between the seat back plate 3 and the seat seat plate 2) corresponding to the fitting of different angle adjustment grooves 7 and the horizontal positioning portion 42 is set to α, and α is preferably 100°-160°. Figure 6As shown, when the angle adjustment slot 7 disposed at the farthest end from the backboard 3 is mated with the horizontal positioning portion 42, the adjustment angle of the backboard 3 is the smallest, which is 100°. When the angle adjustment slot 7 disposed at the closest end to the backboard 3 is mated with the horizontal positioning portion 42, the adjustment angle of the backboard 3 is the largest, which is 160°.

[0045] The specific working process of this program is as follows:

[0046] The technical solution is to rotate the U-shaped support rod so that the positions of different angle adjustment grooves 7 are aligned with the horizontal positioning part 42 on the lower support frame 1, and the backrest plate 3 is rotated so that the angle adjustment groove 7 is close to the horizontal positioning part 42 and fits with it through the groove, so as to freely adjust the backrest angle, improve the comfort of the recliner, and improve the adaptability of the recliner back angle.

[0047] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A reclining chair with an adjustable backrest, comprising a main chair frame, characterized in that: The main body of the chair frame includes a support frame (1), and also includes a seat board (2), which is installed on the support frame (1) and extends forward relative to the support frame (1); a backrest board (3), which is hinged to the rear of the support frame (1), and a U-shaped support rod (6) is hinged to the rear side of the backrest board (3); a grading component (4), the grading component (4) includes an adjusting part (41) arranged on the U-shaped support rod (6) and a horizontal positioning part (42) fixed to the support frame (1), and a plurality of angle adjusting grooves (7) are formed on one side of the adjusting part (41) facing the horizontal positioning part (42), so that the horizontal positioning part (42) can be fitted corresponding to different angle adjusting grooves (7) for adjusting the angle of the backrest board (3).

2. The adjustable-back reclining chair according to claim 1, wherein: The notch direction of the angle adjusting groove (7) along the distribution direction slopes downward toward the position of the horizontal positioning part (42), and the shape of the angle adjusting groove (7) is adapted to the horizontal positioning part (42).

3. A reclining chair with an adjustable backrest according to claim 1, characterized in that: One inner wall of the angle adjusting groove (7) along the fitting direction is an arc wall (8), and the arc direction of the arc wall (8) is such that the groove width of the angle adjusting groove (7) is set to be constricted in the direction of the through end of the groove.

4. A reclining chair with an adjustable backrest according to claim 1, characterized in that: At least five angle adjusting grooves (7) are provided, and the angles of the backrest board (3) corresponding to the fitting of different angle adjusting grooves (7) and the horizontal positioning part (42) are set to 100°-160°.

5. The adjustable-back reclining chair according to claim 1, wherein: A connecting piece (9) for tightening the support frame (1) is arranged at the lower part of the seat board (2), and the connecting piece (9) is hinged to the seat board (2).

6. The adjustable reclining chair according to claim 1, wherein: Both the seat board (2) and the backrest board (3) include two side support rods (10) and a horizontal support rod (11) rotatably arranged between the two side support rods (10), and a chair cloth (12) is covered between the two side support rods (10).

7. A reclining chair with an adjustable backrest according to claim 6, characterized in that: The side support rod (10) has an arrangement groove (13), and both sides of the chair cloth (12) are clamped in the arrangement groove (13).

8. The adjustable-back reclining chair according to claim 6, wherein: A reinforcing rod (14) is arranged at the front end of the seat board (2), and the reinforcing rod (14) is fixed between the two side support rods (10).

9. A reclining chair with an adjustable backrest according to claim 1, characterized in that: Both sides of the support frame (1) are provided with symmetrically arranged armrest parts (5).

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