Seat-back linkage type seat

Abstract

The utility model provides a seat-back linkage type seat which comprises armrest seats which are symmetrically arranged at intervals, a seat assembly and a backrest assembly, the seat assembly and the backrest assembly are hinged between the two armrest seats, and the seat assembly and the backrest assembly are connected through a linkage mechanism. The linkage mechanism is used for linking the backrest assembly to rotate and unfold when the chair seat assembly is turned over and opened; the linkage mechanism comprises a driving connecting rod mounted on one side or two sides of the chair seat assembly, one end of the driving connecting rod is connected with the chair seat assembly, and the other end of the driving connecting rod is hinged to the backrest assembly; a reset piece is installed in the seat assembly, after the passenger leaves, the reset piece enables the seat assembly to return, and the seat assembly drives the backrest assembly to approach and return towards the middle through the driving connecting rod; the seat-back linkage type seat overcomes the defect that an existing seat adopts a fixed backrest, so that the occupied space is large.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to a seat-back linkage type seat. Background Technology

[0002] As an indispensable part of daily life and work, seating is becoming increasingly functional. With the development of technology, people are paying more and more attention to the space utilization of seating, especially in public places such as conference rooms, theaters, and stadiums, where the space utilization of seating is crucial.

[0003] Existing chairs generally include components such as a backrest, armrests, and seat cushion. To reduce the space occupied by the chair, the seat cushion is usually designed to be flip-up, meaning it is mounted between the two armrests and can be folded up when not in use, thus reducing space usage. While this structure achieves some effect, the fixed, non-adjustable backrest takes up too much space. With limited row spacing, this reduces pedestrian access, hindering movement and evacuation, resulting in poor usability. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The problem to be solved by this utility model is to provide a seat with a linked backrest to overcome the defect of existing seats with fixed backrests that occupy a large amount of space.

[0006] (II) Technical Solution

[0007] To solve the aforementioned technical problem, this utility model provides a seat-back linkage type seat, including symmetrically arranged and spaced armrests, and a seat assembly and a backrest assembly hinged between the two armrests. The seat assembly and the backrest assembly are connected by a linkage mechanism, which is used to link the backrest assembly to rotate and unfold when the seat assembly is flipped open. The linkage mechanism includes a drive link installed on one or both sides of the seat assembly, one end of the drive link being connected to the seat assembly, and the other end being hinged to the backrest assembly. A reset member is installed inside the seat assembly. When the passenger leaves, the reset member causes the seat assembly to return to its original position, and the seat assembly drives the backrest assembly to move towards the center and return to its original position via the drive link.

[0008] In some embodiments, a seat pivot is provided on the seat assembly, and the seat assembly can rotate relative to the seat pivot; a support seat fixed to the seat pivot is provided on the armrest seat, and one end of the drive linkage is fixed to the outer wall of the seat assembly.

[0009] In some embodiments, the driving link comprises a rocker and an arc-shaped rod, one end of the rocker is fixed on the outer wall of the seat assembly, one end of the arc-shaped rod is hinged with the rocker, and the other end is hinged with the backrest assembly; when the seat assembly is flipped open, the seat assembly drives the rocker to rotate, and the rocker drives the backrest assembly to rotate and unfold through the arc-shaped rod.

[0010] In some embodiments, the side end of the seat assembly is provided with a first baffle, the armrest seat is provided with a first limiting plate and a second limiting plate for blocking the first baffle, and the two sides of the first baffle are respectively provided with a first buffer pad.

[0011] In some embodiments, the lower end of the backrest assembly is provided with a connecting lug plate, the upper end of the connecting lug plate is hinged on the armrest seat through a hinge shaft, and one end of the driving link is hinged at the lower end of the connecting lug plate.

[0012] In some embodiments, the side end of the backrest assembly is provided with a second baffle, the armrest seat is provided with a horizontal limiting rod and a vertical limiting rod for blocking the second baffle, and the two sides of the second baffle are respectively provided with a second buffer pad.

[0013] In some embodiments, the reset member is a spring, and a gas spring is arranged between the armrest seat and the backrest assembly, one end of the gas spring is hinged on the armrest seat, and the other end is connected with the backrest assembly.

[0014] In some embodiments, the linkage mechanism is two groups and is symmetrically arranged on the two sides of the seat assembly.

[0015] (Three) beneficial effects

[0016] The seat-back linkage type seat provided by the utility model adopts a swingable backrest assembly, the backrest assembly is linked with the seat assembly through a driving link, when the seat assembly is flipped open, the seat rotating shaft drives the rocker to rotate, and the rocker drives the backrest assembly to rotate and unfold through the arc-shaped rod; when the occupant leaves, the reset member makes the seat assembly reset, the seat assembly drives the backrest assembly to close to the middle through the driving link, and keeps the seat assembly and the backrest assembly in the storage state of closing to the middle, the depth size of the stored seat is reduced, the space for pedestrians to pass through is increased under the same row spacing, the personnel walking and evacuation are facilitated, and the defect that the space occupation is large caused by the fixed backrest of the existing seat is overcome. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 It is a perspective view of the seat-back linkage type seat of the utility model;

[0019] Figure 2 It is an exploded view of the seat-back linkage type seat of the utility model;

[0020] Figure 3 It is a perspective view of the connection of the seat assembly and the backrest assembly of the seat-back linkage type seat of the utility model;

[0021] Figure 4 It is a perspective view of the driving connecting rod of the seat-back linkage type seat of the utility model;

[0022] Figure 5 It is a perspective view of the armrest seat of the seat-back linkage type seat of the utility model;

[0023] Figure 6 It is a perspective view of the seat assembly of the seat-back linkage type seat of the utility model;

[0024] Figure 7 It is a perspective view of the backrest assembly of the seat-back linkage type seat of the utility model;

[0025] Figure 8 It is a perspective view of the gas spring of the seat-back linkage type seat of the utility model;

[0026] Figure 9 It is a perspective view of the storage state of the seat-back linkage type seat of the utility model;

[0027] Figure 10 It is a perspective view of the driving connecting rod in the storage state of the seat-back linkage type seat of the utility model;

[0028] Figure 11 It is a structural schematic view of the inside of the seat assembly of the seat-back linkage type seat of the utility model;

[0029] The corresponding component names of the various reference numerals in the figures are as follows: 1, armrest seat; 11, support seat; 12, first limiting plate; 13, second limiting plate; 14, horizontal limiting rod; 15, vertical limiting rod; 2, seat assembly; 21, seat rotating shaft; 22, first baffle; 23, first cushion block; 3, backrest assembly; 31, connecting lug plate; 32, hinged shaft; 33, second baffle; 34, second cushion block; 4, driving link; 41, rocker; 42, arc-shaped rod; 5, gas spring; 6, reset member. DETAILED DESCRIPTION

[0030] The present application will be described in detail below with reference to the drawings and specific embodiments.

[0031] The above and other aspects of the present application will become more apparent by describing in detail the embodiments thereof with reference to the attached drawings in which:

[0032] It is to be understood that the embodiments described herein below are merely illustrative of the principles of the present application and that various modifications can be implemented by those skilled in the art without departing from the scope and spirit of the application. It is therefore contemplated to cover by the present application any and all modifications, variations or equivalents that fall within the scope of the present application. It is intended that the scope of the present application shall be limited only to the extent of the claims and equivalents thereof.

[0033] It is also to be understood that the following description is only illustrative of the aspects of the present application and that various modifications can be implemented by those skilled in the art without departing from the scope and spirit of the application. It is therefore contemplated to cover by the present application any and all modifications, variations or equivalents that fall within the scope of the present application. It is intended that the scope of the present application shall be limited only to the extent of the claims and equivalents thereof.

[0034] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0035] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0036] See Figures 1 to 11 This utility model provides a seat with a linked backrest, including symmetrically arranged and spaced armrest seats 1, and a seat assembly 2 and a backrest assembly 3 hinged between the two armrest seats 1. The seat assembly 2 is located in front of the backrest assembly 3. The seat assembly 2 and the backrest assembly 3 are connected by a linkage mechanism, which is used to link the backrest assembly 3 to rotate and unfold when the seat assembly 2 is flipped open. The linkage mechanism includes a drive link 4 installed on one or both sides of the seat assembly 2. The drive link 4 is located inside the armrest seats 1, with one end connected to the seat assembly 2 and the other end hinged to the backrest assembly 3. A reset member is installed inside the seat assembly 2. When the occupant leaves, the reset member causes the seat assembly 2 to flip back to its original position. The seat assembly 2, through the drive link 4, drives the backrest assembly 3 to move towards the center and return to its original position, maintaining the seat assembly 2 and backrest assembly 3 in a folded-in state.

[0037] In some embodiments, such as Figure 3 , Figure 5 and Figure 6 As shown, a seat pivot 21 is mounted on the seat assembly 2, allowing the seat assembly 2 to rotate relative to the seat pivot 21. A support seat 11 is mounted on the armrest seat 1 and fixed to the seat pivot 21. Both ends of the seat pivot 21 are placed on the corresponding support seats 11 and fixed to them with rivets. One end of the drive linkage 4 is fixed to the outer wall of the seat assembly 2.

[0038] like Figure 3 and Figure 4 As shown, the drive linkage 4 includes a rocker arm 41 and an arc-shaped rod 42. One end of the rocker arm 41 is fixed to the outer wall of the seat assembly 2, and the rocker arm 41 can rotate with the seat assembly 2. The seat assembly 2 has metal connecting plates on both sides, and the rocker arm 41 can be fixed to the metal connecting plates by welding. One end of the arc-shaped rod 42 is hinged to the rocker arm 41, and the other end of the arc-shaped rod 42 is hinged to the backrest assembly 3.

[0039] When the seat assembly 2 is turned over to open, the seat assembly 2 rotates, the seat assembly 2 drives the rocker 41 to rotate, and the rocker 41 drives the backrest assembly 3 to rotate and unfold through the arc-shaped rod 42. When the passenger leaves, the seat assembly is returned to the original position under the action of the return member, the seat assembly drives the backrest assembly to return to the middle through the driving connecting rod, and the seat assembly and the backrest assembly are kept in the storage state of being close to the middle. After storage, the depth of the seat is reduced, the space for pedestrians to pass through is increased under the same row spacing, and the movement and evacuation of personnel are facilitated.

[0040] In some embodiments, as shown in Figure 5 and Figure 6 , the side end of the seat assembly 2 is provided with a first baffle 22, and the armrest seat 1 is provided with a first limiting plate 12 and a second limiting plate 13 for blocking the first baffle 22. The first baffle 22, the first limiting plate 12 and the second limiting plate 13 are all L-shaped. The first baffle 22 can move between the first limiting plate 12 and the second limiting plate 13. When the seat assembly 2 is turned over to open, the first baffle 22 is positioned on the first limiting plate 12 for limiting; when the seat assembly 2 is stored, the first baffle 22 is positioned on the second limiting plate 13 for limiting. Among them, the two sides of the first baffle 22 are respectively provided with first buffer pads 23, which can be made of plastic or silicone material, which can buffer when the first baffle 22 contacts the first limiting plate 12 and the second limiting plate 13, thereby reducing noise and weakening collision, and the use effect is good.

[0041] In some embodiments, as shown in Figure 3 and Figure 7 , the lower end of the backrest assembly 3 is provided with a connecting lug plate 31, the upper end of the connecting lug plate 31 is hinged to the armrest seat 1 through a hinge shaft 32, and one end of the driving connecting rod 4 is hinged to the lower end of the connecting lug plate 31.

[0042] In some embodiments, as shown in Figure 7 and Figure 8 , the side end of the backrest assembly 3 is provided with a second baffle 33, the second baffle 33 is in the shape of a trapezoid with one end open, and the armrest seat 1 is provided with a horizontal limiting rod 14 and a vertical limiting rod 15 for blocking the second baffle 33. When the backrest assembly 3 is unfolded, the second baffle 33 is positioned on the horizontal limiting rod 14 for limiting; when the backrest assembly 3 is stored, the second baffle 33 is positioned on the vertical limiting rod 15 for limiting. Among them, the two sides of the second baffle 33 are respectively provided with second buffer pads 34, which can be made of plastic or silicone material, which can buffer, thereby reducing noise and weakening collision.

[0043] In some embodiments, as shown in Figure 8 and Figure 11As shown, the reset member 6 can be a spring. In order to increase the buffering damping effect, a buffering gas spring is installed in the seat assembly 2 on one side of the spring. A gas spring 5 is installed between the armrest seat 1 and the backrest assembly 3, one end of the gas spring 5 is hinged to the horizontal limiting rod 14 of the armrest seat 1, and the other end of the gas spring is connected with the backrest assembly 3, thereby increasing the buffering effect.

[0044] In some embodiments, as shown, Figure 4 As shown, the linkage mechanism is two groups and symmetrically arranged on both sides of the seat assembly 2; two groups of linkage mechanisms are adopted, the force is flat and horizontal, the structure is more stable, and the linkage effect is better.

[0045] In the specification, the same or similar parts among various embodiments can be referred to each other, and each embodiment focuses on the difference from other embodiments.

[0046] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A seat and back linkage for a seat, characterized by: The application relates to a chair with a linkage mechanism, which comprises symmetrically and spaced armrests (1), a seat assembly (2) and a backrest assembly (3) hinged between the two armrests (1), and a linkage mechanism connecting the seat assembly (2) and the backrest assembly (3), which is used to link the rotation of the backrest assembly (3) when the seat assembly (2) is flipped open; the linkage mechanism comprises a driving link (4) installed on one side or both sides of the seat assembly (2), one end of the driving link (4) being connected to the seat assembly (2) and the other end being hinged to the backrest assembly (3); a reset member (6) is installed in the seat assembly (2), which makes the seat assembly (2) return to the original position when a passenger leaves, and the seat assembly (2) drives the backrest assembly (3) to return to the original position through the driving link (4).

2. The recliner linkage seat as set forth in claim 1, further characterized by: A seat rotating shaft (21) is arranged on the seat assembly (2), and the seat assembly (2) can rotate relative to the seat rotating shaft (21); a supporting seat (11) fixed with the seat rotating shaft (21) is arranged on the armrest (1), and one end of the driving link (4) is fixed on the outer wall of the seat assembly (2).

3. The recliner linkage seat as set forth in claim 2, further characterized by: The driving link (4) comprises a rocker (41) and an arc-shaped link (42), one end of the rocker (41) being fixed on the outer wall of the seat assembly (2); one end of the arc-shaped link (42) is hinged to the rocker (41), and the other end is hinged to the backrest assembly (3); when the seat assembly (2) is flipped open, the seat assembly (2) drives the rocker (41) to rotate, and the rocker (41) drives the backrest assembly (3) to rotate and expand through the arc-shaped link (42).

4. The recliner linkage seat as described in claim 1, further comprising: First baffles (22) are arranged on the side ends of the seat assembly (2), and first limiting plates (12) and second limiting plates (13) for blocking the first baffles (22) are arranged on the armrest (1).

5. The recliner linkage seat as described in claim 4, further comprising: First buffer blocks (23) are arranged on the two sides of the first baffles (22).

6. The recliner linkage seat as described in claim 1, further comprising: Connecting lugs (31) are arranged on the lower ends of the backrest assembly (3), the upper ends of the connecting lugs (31) are hinged to the armrest (1) through hinge shafts (32), and one end of the driving link (4) is hinged to the lower ends of the connecting lugs (31).

7. The recliner linkage seat as described in claim 1, further comprising: Second baffles (33) are arranged on the side ends of the backrest assembly (3), and horizontal limiting rods (14) and vertical limiting rods (15) for blocking the second baffles (33) are arranged on the armrest (1).

8. The recliner linkage seat as set forth in claim 7, further characterized by: Second buffer blocks (34) are arranged on the two sides of the second baffles (33).

9. The recliner linkage seat as described in claim 1, further comprising: The reset member (6) is a spring; a gas spring (5) is arranged between the armrest (1) and the backrest assembly (3), one end of the gas spring (5) is hinged to the armrest (1), and the other end is connected to the backrest assembly (3).

10. The recliner linkage seat as described in claim 1, further comprising: The linkage mechanism is two groups, which are symmetrically arranged on the two sides of the seat assembly (2).

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