Leisure chair with adjustable backrest

Abstract

The utility model relates to the technical field of leisure chairs, in particular to a leisure chair with an adjustable backrest. Comprising two side plate frames, a seat plate, a hinge, a backrest, connecting plates, an installation frame, a threaded rod and a protruding block, the seat plate is arranged between the two side plate frames, the hinge is arranged on the rear side of the seat plate, the other end of the hinge is connected with the backrest, the connecting plates are arranged on the two sides of the rear portion of the backrest, and straight grooves are formed in the connecting plates. Mounting frames are arranged at the rear side ends of the side plate frames, threaded rods are rotationally arranged in the mounting frames, and protruding blocks in sliding fit with the mounting frames on the same sides are arranged on the threaded rods in a threaded mode. A convenient backrest angle adjusting mechanism is designed, interaction between the protruding block and the connecting plate can be effectively driven by manually rotating the threaded rod, then accurate adjustment of the angle of the backrest is achieved, the process is simple and rapid, a user can adjust the backrest to the needed angle only through one-time operation, and the user experience is improved. And the use experience and the comfort level are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of leisure chairs, in particular to a leisure chair with an adjustable backrest. Background Art

[0002] A leisure chair refers to a chair used for enjoying leisure time. It is not as formal as dining chairs and office chairs, but focuses on personalization and comfort, and can bring people both visual and physical enjoyment.

[0003] While traditional lounge chairs emphasize aesthetics and comfort, they have functional limitations. Existing solutions are often inflexible when it comes to backrest angle adjustment. The backrest angle of most lounge chairs is pre-set during production, making it difficult for users to adjust it to their needs once installed. Some products offer adjustment functionality, but this requires partial disassembly and reassembly of the chair, a time-consuming and labor-intensive process that creates significant inconvenience for users.

[0004] Therefore, in view of the above problems, there is an urgent need to propose a leisure chair with an adjustable backrest, which allows users to easily adjust the angle of the backrest according to their own needs while ensuring the overall stability and comfort of the seat, thereby improving the user experience. Utility Model Content

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a leisure chair with an adjustable backrest, which allows users to easily adjust the angle of the backrest according to their own needs while ensuring the overall stability and comfort of the seat, thereby improving the user experience.

[0006] The technical solution is: a leisure chair with an adjustable backrest, including a side panel frame, a seat panel, a hinge, a backrest, a connecting plate, a mounting frame, a threaded rod and a protrusion. There are two side panel frames, a seat panel is arranged between the two side panel frames, a hinge is arranged on the rear side of the seat panel, and the other end of the hinge is connected to the backrest. Connecting plates are arranged on both sides of the rear of the backrest, and straight grooves are opened on the connecting plates. Mounting frames are provided at the rear ends of the side panel frames, and threaded rods are rotatably arranged in the mounting frames. The threaded rods are threaded with protrusions that slide with the mounting frame on the same side. The protrusion is in the shape of a protrusion facing the connecting plate, and the protrusion of the protrusion slides through the straight groove on the same side.

[0007] Furthermore, it also includes a positioning disk, a guide rod, a clamping plate and an elastic member. A positioning disk with a circumferential groove is provided at the rear end of the threaded rod, a guide rod is provided at the top of the mounting frame, and a clamping plate that is slidably provided on the guide rod and is engaged with the positioning disk on the same side, and an elastic member is provided between the clamping plate and the corresponding guide rod.

[0008] Furthermore, it also includes guide rails and extension plates. The side plate frames are each provided with a guide rail, and an extension plate is slidably provided between the two guide rails.

[0009] Furthermore, it also includes a connecting seat and an insertion rod. A connecting seat is provided at the bottom of the guide rail, and an insertion rod is provided on the connecting seat to be rotated by a torsion spring and to be plugged into and matched with the extension plate.

[0010] Furthermore, a protective shell is also included, and a protective shell is also provided on the installation frame to cover the guide rod and the upper components.

[0011] Furthermore, auxiliary wheels are also included, and auxiliary wheels are symmetrically rotatably arranged on the front side of the bottom of the extension plate.

[0012] The beneficial effects of the present invention are: 1. The present invention designs a convenient backrest angle adjustment mechanism. By manually rotating the threaded rod, it can effectively drive the interaction between the protrusion and the connecting plate, thereby realizing precise adjustment of the backrest angle. This process is simple and quick. The user only needs one operation to adjust the backrest to the desired angle, which greatly improves the user experience and comfort.

[0013] 2. The present invention also introduces an ingenious combination of a positioning disc and a clamping plate. This design not only ensures the smooth operation of the threaded rod when performing the adjustment action, but also accurately fixes the position of the threaded rod after the adjustment is completed, avoiding the stability of the backrest caused by external vibration or displacement during use. In this way, whether it is static rest or dynamic use, the firmness and reliability of the seat back can be guaranteed, significantly enhancing the overall performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the side panel frame, seat panel, hinge and backrest of the utility model.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of part A of the utility model.

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the three-dimensional structure after the A part is enlarged.

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide rail, extension plate, connecting seat and other components of the utility model.

[0019] Figure 6 This is a schematic diagram of the seat plate, extension plate and auxiliary wheels of the utility model in use.

[0020] In the accompanying drawings: 1-side panel frame, 2-seat plate, 3-hinge, 4-backrest, 5-connecting plate, 51-straight groove, 6-installation frame, 61-protective shell, 7-threaded rod, 8-bump, 9-locking plate, 10-guide rod, 11-clamping plate, 12-elastic part, 13-guide rail, 14-extension plate, 15-connecting seat, 16-insertion rod, 17-auxiliary wheel. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] Embodiment: A leisure chair with an adjustable backrest, such as Figure 1-Figure 4 As shown, it includes a side panel frame 1, a seat panel 2, a hinge 3, a backrest 4, a connecting plate 5, a mounting frame 6, a threaded rod 7 and a protrusion 8. There are two side panel frames 1, which constitute the basic frame of the chair, one on each side. A seat panel 2 is arranged between the two side panel frames 1. Each corner of the side panel frame 1 is rounded to make the corner smoother, which improves the aesthetics and avoids bumps. A hinge 3 is arranged on the back side of the seat panel 2, and the other end of the hinge 3 is connected to the backrest 4. The contact surfaces of the seat panel 2 and the backrest 4 with the human body are padded to improve the comfort of use, and the backrest 4 can be tilted forward and backward under the connection of the hinge 3. 4 is provided with connecting plates 5 on both sides of the rear part, and vertical straight grooves 51 are opened on the connecting plates 5. The rear ends of the side plate frames 1 are provided with mounting frames 6. Threaded rods 7 are rotatably provided in the mounting frames 6. The threaded rods 7 are threadedly provided with protrusions 8 that slide with the mounting frames 6 on the same side. The protrusions 8 are in the shape of protrusions facing the connecting plates 5, and the protrusions of the protrusions 8 slide through the straight grooves 51 on the same side. By rotating the threaded rods 7, the protrusions 8 are driven to move, so that the protrusions 8 move in the straight grooves 51, thereby changing the inclination angle of the backrest 4. The angle can extend from 95 degrees to 135 degrees, providing more angle adjustment options for back support.

[0023] like Figure 3 and Figure 4As shown, it also includes a locking disk 9, a guide rod 10, a clamping plate 11 and an elastic member 12. A locking disk 9 with a circumferential groove is provided at the rear end of the threaded rod 7. Guide rods 10 are symmetrically provided on the top of the mounting frame 6. A clamping plate 11 that is engaged with the locking disk 9 on the same side is slidably provided between the two guide rods 10. An elastic member 12 is provided between the clamping plate 11 and the corresponding guide rod 10. In this embodiment, the elastic member 12 is a spring. The clamping plate 11 can be used to lock the position of the locking disk 9 together with the threaded rod 7, thereby locking the position of the backrest 4.

[0024] like Figure 5 and Figure 6 As shown, it also includes a guide rail 13 and an extension plate 14. A guide rail 13 is set on the side panel frame 1, and an extension plate 14 is slidably set between the two guide rails 13 to provide additional placement space. The extension plate 14 can be slid to increase the length of the seat plate 2 to facilitate the placement of the legs.

[0025] like Figure 5 As shown, it also includes a connecting seat 15 and an insertion rod 16. A connecting seat 15 is provided at the bottom of the guide rail 13. The connecting seat 15 is provided with an insertion rod 16 that is plugged into the extension plate 14 through a torsion spring rotation, which is used to lock the position of the extension plate 14 to prevent it from sliding out accidentally.

[0026] like Figure 1 and Figure 3 As shown, a protective shell 61 is also included. A protective shell 61 is provided on the mounting frame 6 to cover the guide rod 10 and the components thereon, thereby protecting the internal components.

[0027] like Figure 5 and Figure 6 As shown, auxiliary wheels 17 are also included. Auxiliary wheels 17 are symmetrically rotatably provided on the bottom front side of the extension plate 14 to provide auxiliary support for the extended extension plate 14.

[0028] When the user sits on the seat plate 2, the back rests on the backrest 4, and the arms rest on the side frame 1 on both sides. The angle of the backrest 4 can be adjusted according to the needs of use by rotating the threaded rod 7. As the threaded rod 7 rotates, the protrusion 8 on it is driven to slide along the thread in the installation frame 6, and then the protrusion on the protrusion 8 will push the connecting plate 5 to slide in the straight groove 51 of the connecting plate 5, and push the backrest 4 to rotate on the basis of the hinge 3, thereby achieving the angle adjustment of the backrest 4. As the threaded rod 7 rotates, it drives the positioning plate 9 to rotate, and the grooves on the positioning plate 9 also rotate and continuously move circumferentially, and then different grooves are continuously replaced and contact the card plate 11, so that the card plate 11 is forced to move up on the guide rod 10, and the elastic member 12 is deformed accordingly, and when the threaded rod 7 stops operating, the locking disc 9 stops rotating, and the elastic member 12 is reset accordingly, so that the locking plate 11 is locked into the groove corresponding to the locking disc 9, thereby limiting the movement of the threaded rod 7 and stabilizing the position of the protrusion 8 to ensure the stability of the backrest 4 after the angle is adjusted; in order to improve the comfort of the legs, during use, the insertion rods 16 on both sides are first moved to make it rotate on the connecting seat 15, and then the insertion rods 16 are separated from the extension plate 14, so that the extension plate 14 can slide freely on the guide rail 13, and then the extension plate 14 is slid out from under the seat plate 2, and then the two auxiliary wheels 17 on the front side are lowered to support the extension plate 14, and then the legs can be placed on the extension plate 14 to form a semi-lying use state, which greatly improves the use comfort.

[0029] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the present invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to illustrate rather than limit the present invention, which shall be defined by the claims.

Claims

1. A leisure chair with an adjustable backrest, characterized in that: The invention comprises a side panel frame (1), a seat panel (2), a hinge (3), a backrest (4), a connecting plate (5), a mounting frame (6), a threaded rod (7) and a protrusion (8), wherein two side panel frames (1) are provided, a seat panel (2) is provided between the two side panel frames (1), a hinge (3) is provided on the rear side of the seat panel (2), the other end of the hinge (3) is connected to the backrest (4), connecting plates (5) are provided on both sides of the rear part of the backrest (4), A straight groove (51) is provided on each connecting plate (5), and a mounting frame (6) is provided at the rear end of each side plate frame (1). A threaded rod (7) is rotatably provided in each mounting frame (6), and a convex block (8) is threadedly provided on each threaded rod (7) and is slidably matched with the mounting frame (6) on the same side. The convex block (8) is in the shape of a convex rod facing the side of the connecting plate (5), and the convex rod of the convex block (8) is slidably penetrated into the straight groove (51) on the same side.

2. The leisure chair with an adjustable backrest according to claim 1, characterized in that: The invention also comprises a positioning disc (9), a guide rod (10), a clamping plate (11) and an elastic member (12). A positioning disc (9) with a groove formed in a circumferential direction is provided at the rear end of the threaded rod (7). A guide rod (10) is provided at the top of the installation frame (6). A clamping plate (11) is slidably provided on the guide rod (10) and is engaged with the positioning disc (9) on the same side. An elastic member (12) is provided between the clamping plate (11) and the corresponding guide rod (10).

3. The leisure chair with an adjustable backrest according to claim 2, characterized in that: It also includes a guide rail (13) and an extension plate (14). The guide rail (13) is arranged on the side plate frame (1), and the extension plate (14) is slidably arranged between the two guide rails (13).

4. The leisure chair with an adjustable backrest according to claim 3, characterized in that: It also includes a connecting seat (15) and an insertion rod (16). The connecting seat (15) is provided at the bottom of the guide rail (13). The insertion rod (16) that is plugged into and matched with the extension plate (14) is rotatably provided on the connecting seat (15) through a torsion spring.

5. The leisure chair with an adjustable backrest according to claim 4, characterized in that: It also includes a protective shell (61), which is provided on the installation frame (6) and covers the guide rod (10) and the components thereon.

6. The leisure chair with an adjustable backrest according to claim 5, characterized in that: It also includes auxiliary wheels (17), which are symmetrically rotatably arranged on the front side of the bottom of the extension plate (14).

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