Seat with backrest flatwise and cushion capable of descending along with flatwise of backrest

Abstract

The seat comprises a backrest assembly, a cushion assembly and a sliding rail assembly, seat-backrest connecting supports are arranged on the two sides of the cushion assembly, each seat-backrest connecting support is of an L-shaped structure, a transverse connecting part is fixedly connected with the cushion assembly, the upper end of a vertical connecting part is rotationally connected with the backrest assembly, and the lower end of the vertical connecting part is rotationally connected with the sliding rail assembly. A concave avoiding groove is formed in the position, opposite to an angle adjuster on the backrest assembly, of the vertical connecting part; a sliding rail and cushion linking mechanism is arranged at the front end of the cushion assembly and comprises a stabilizing rod, a left front Link bracket and a right front Link bracket, wherein the stabilizing rod is rotationally connected with a sliding rail left front bracket and a sliding rail right front bracket of the sliding rail assembly, and the left front Link bracket and the right front Link bracket are rotationally connected with the cushion assembly; according to the seat, the cushion and the backrest dive in a linkage mode in the forward flat turning process of the backrest, flat turning space is reserved, only the backrest motor and the sliding rail motor need to be installed on the whole seat, a height adjusting motor is omitted, and the overall structure and the operation process are both simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats and relates to a seat with a flat - folding backrest and a following - diving seat cushion. Background Technique

[0002] Existing vehicle seats are composed of a seat cushion and a backrest. To increase riding comfort, side wings are provided on both sides of the seat cushion and the backrest. However, the setting of the side wings causes the backrest unable to be folded forward flat, unable to meet customer requirements.

[0003] Chinese Patent CN 219769689 U discloses "a height - adjustable seat capable of realizing flat - folding of the backrest". A rotating mechanism is arranged at the front end of the seat cushion of this height - adjustable seat to realize the forward flipping of the seat cushion, providing space for the flat - folding of the backrest. This kind of structure requires relatively high space at the front end of the seat due to the need for the seat cushion to flip forward; in addition, there are also defects such as complex structure, numerous parts, complex assembly of the assembly, and difficult control of dimensional clearances.

[0004] To overcome the above problems, the applicant designed a seat with a diving seat cushion and a forward - folding flat backrest (Application No.: 2024108706204). This seat provides space for the flat - folding of the backrest by controlling the diving of the seat cushion. However, it needs to set up an independent motor to drive the seat cushion to dive, and the flat - folding of the backrest and the diving of the seat cushion need to be operated separately, with the seat cushion diving first and the backrest folding flat later. This kind of structure not only has high cost but also has a relatively cumbersome operation process. Summary of the Invention

[0005] In view of the above - mentioned technical problems and disadvantages, the purpose of the utility model is to provide a seat with a flat - folding backrest and a following - diving seat cushion. During the process of the forward flat - folding of the backrest, the seat cushion and the backrest are linked to dive, creating a flat - folding space. Only a backrest motor and a slide - rail motor need to be installed on the whole seat, omitting the high - lift motor, which not only simplifies the overall structure of the seat, but also saves a driving motor, reduces costs and the overall weight of the seat. At the same time, because the flat - folding of the backrest and the diving of the seat cushion are carried out synchronously, the operation process can also be simplified.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A seat with a flat - folding backrest and a following - diving seat cushion, including a backrest assembly, a seat - cushion assembly, and a slide - rail assembly. The backrest assembly is connected to the upper slide - rail of the slide - rail assembly through angle - adjuster lower connecting plates arranged on both sides of the backrest assembly. The improvement is that seat - back connecting brackets are provided on both sides of the seat - cushion assembly. The seat - back connecting brackets are of an L - shaped structure, including a horizontal connecting part and a vertical connecting part. The horizontal connecting part is fixedly connected to the seat - cushion assembly. The vertical connecting part and the horizontal connecting part are of an integral structure. The upper end of the vertical connecting part is rotatably connected to the backrest assembly, and an inward - concave avoidance groove is provided at the position of the vertical connecting part opposite to the angle adjuster on the backrest assembly;

[0008] The front end of the seat cushion assembly is provided with a slide rail seat cushion linkage mechanism. The slide rail seat cushion linkage mechanism includes a stabilizing rod and a left front Link bracket and a right front Link bracket arranged at both ends of the stabilizing rod. The left front Link bracket and the right front Link bracket are rotatably connected to the seat cushion assembly;

[0009] On the upper slide rail of the slide rail assembly, at a position near the front end, there are a left front slide rail bracket and a right front slide rail bracket. The left front slide rail bracket and the right front slide rail bracket are provided with assembly holes. Both ends of the stabilizing rod are respectively arranged in the assembly holes of the left front slide rail bracket and the right front slide rail bracket and can rotate relative to the upper slide rail;

[0010] When the backrest assembly is flipped forward and flattened by the backrest motor, the backrest assembly and the seat cushion assembly are linked through a seat-back connection bracket, so that the seat cushion assembly continuously sinks with the movement of the backrest assembly, creating a flattening space.

[0011] As a preference of the present utility model, the seat-back connection bracket and the backrest assembly are installed together by riveting. When the backrest assembly is flipped forward and flattened, the rivet connecting the seat-back connection bracket and the backrest assembly rotates counterclockwise relative to the angle adjuster with the movement of the backrest assembly.

[0012] As a preference of the present utility model, the left front Link bracket and the right front Link bracket are installed together with the seat cushion assembly by riveting.

[0013] As a preference of the present utility model, both ends of the stabilizing rod are installed at the assembly holes of the left front slide rail bracket and the right front slide rail bracket through bushings and thrust washers, and the connection part can rotate.

[0014] As a preference of the present utility model, on the upper slide rail of the slide rail assembly, at a position near the rear end, there are a left rear slide rail bracket and a right rear slide rail bracket. The lower connecting plates of the angle adjusters on both sides of the backrest assembly are installed and fixed on the left rear slide rail bracket and the right rear slide rail bracket.

[0015] Advantages and beneficial effects of the present utility model: In the process of the backrest of the seat provided by the present utility model being flipped forward and flattened, the seat cushion and the backrest are linked and dive downward, creating a flattening space. Only a backrest motor and a slide rail motor need to be installed on the whole seat, and the high-lift motor is omitted, which not only simplifies the overall structure of the seat, but also saves a driving motor, reduces the cost and the overall weight of the seat. At the same time, because the backrest is flipped flat and the seat cushion dives synchronously, the operation process can also be simplified. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the seat with the backrest folded flat and the seat cushion following and diving (normal posture) provided by the present invention;

[0018] Figure 2 Schematic diagram of the seat with the backrest folded flat and the seat cushion following and diving (front-flipped posture of the backrest) provided by the present invention;

[0019] Figure 3 Schematic diagram of the four rotational positions of the seat with the backrest folded flat and the seat cushion following and diving provided by the present invention;

[0020] Figure 4 Exploded schematic diagram of the seat with the backrest folded flat and the seat cushion following and diving provided by the present invention;

[0021] Figure 5 Connection schematic diagram of the various components of the seat with the backrest folded flat and the seat cushion following and diving provided by the present invention.

[0022] Reference numerals: backrest assembly 1, seat cushion assembly 2, slide rail assembly 3, seat-back connection bracket 4, slide rail-seat cushion link mechanism 5, lower connecting plate of the angle adjuster 11, angle adjuster 12, upper slide rail 31, left front slide rail bracket 32, right front slide rail bracket 33, left rear slide rail bracket 34, right rear slide rail bracket 35, horizontal connecting portion 41, vertical connecting portion 42, stabilizer bar 51, left front Link bracket 52, right front Link bracket 53, left assembly hole 321, right assembly hole 331, avoidance groove 421. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0025] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] As Figures 1 to 5 shown, a seat with a backrest that flips flat and a seat cushion that follows and dives provided in this embodiment includes a backrest assembly 1, a seat cushion assembly 2, and a slide rail assembly 3. The backrest assembly 1 is connected to the upper slide rail 31 of the slide rail assembly 3 through the angle adjuster lower connecting plates 11 provided on both sides of the backrest assembly 1. The improvement is that seat-back connecting brackets 4 are provided on both sides of the seat cushion assembly 2. The seat-back connecting brackets 4 are of an L-shaped structure, including a horizontal connecting portion 41 and a vertical connecting portion 42. The horizontal connecting portion 41 is fixedly connected to the seat cushion assembly 2. The vertical connecting portion 42 and the horizontal connecting portion 41 are of an integral structure. The upper end of the vertical connecting portion 42 is rotatably connected to the backrest assembly 1, and a concave avoidance groove 421 is provided at a position of the vertical connecting portion 42 opposite to the angle adjuster 12 on the backrest assembly.

[0027] A slide rail seat cushion linking mechanism 5 is provided at the front end of the seat cushion assembly 2. The slide rail seat cushion linking mechanism 5 includes a stabilizing rod 51 and left front Link brackets 52 and right front Link brackets 53 provided at both ends of the stabilizing rod. The upper ends of the left front Link bracket 51 and the right front Link bracket 52 are rotatably connected to the seat cushion assembly 2.

[0028] On the upper slide rail 31 of the slide rail assembly 3, a slide rail left front bracket 32 and a slide rail right front bracket 33 are provided at positions close to the front end. Left assembly holes 321 and right assembly holes 331 are respectively provided on the slide rail left front bracket 32 and the slide rail right front bracket 33. Both ends of the stabilizing rod 3 are respectively arranged in the left assembly hole 321 and the right assembly hole 331 of the slide rail left front bracket 32 and the slide rail right front bracket 33, and can rotate relative to the upper slide rail 31.

[0029] When the backrest assembly 1 is flattened forward by a backrest motor (not shown), the backrest assembly 1 and the seat cushion assembly 2 are linked by a seat-back connection bracket 4, so that the seat cushion assembly 2 continuously sinks with the movement of the backrest assembly 1 to create a flattening space.

[0030] Further, in this embodiment, the seat-back connection bracket 4 and the backrest assembly 1 are installed together by riveting. When the backrest assembly 1 is flattened forward, the rivet connecting the seat-back connection bracket 4 and the backrest assembly 1 rotates counterclockwise relative to the angle adjuster 12 with the movement of the backrest assembly 1;

[0031] The left front Link bracket 52 and the right front Link bracket 53 are installed on the seat cushion assembly 2 by riveting;

[0032] Both ends of the stabilizer bar 51 are installed at the left assembly hole 321 and the right assembly hole 331 of the left front slide rail bracket 32 and the right front slide rail bracket 33 through bushings and thrust washers, and the connection points can rotate.

[0033] Further, in this embodiment, on the upper slide rail 31 of the slide rail assembly 3, a left rear slide rail bracket 34 and a right rear slide rail bracket 35 are provided near the rear end, and the angle adjuster lower connecting plates 11 on both sides of the backrest assembly 1 are installed and fixed on the left rear slide rail bracket 34 and the right rear slide rail bracket 35.

[0034] The above are the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A seat with a backrest that can be flipped flat and a cushion that follows and dives, comprising a backrest assembly, a cushion assembly, and a slide rail assembly. The backrest assembly is connected to the upper slide rail of the slide rail assembly through angle adjuster lower connecting plates provided on both sides of the backrest assembly. It is characterized in that, On both sides of the seat cushion assembly, there are seat-back connection brackets. The seat-back connection brackets are of L-shaped structure, including a horizontal connection part and a vertical connection part. The horizontal connection part is fixedly connected to the seat cushion assembly. The vertical connection part and the horizontal connection part are of integral structure. The upper end of the vertical connection part is rotatably connected to the backrest assembly. And at the position opposite to the angle adjuster on the backrest assembly, the vertical connection part is provided with a concave avoidance groove. At the front end of the seat cushion assembly, there is a slide rail seat cushion linking mechanism. The slide rail seat cushion linking mechanism includes a stabilizer bar and left front Link brackets and right front Link brackets arranged at both ends of the stabilizer bar. The left front Link brackets and the right front Link brackets are rotatably connected to the seat cushion assembly. On the upper slide rail of the slide rail assembly, at a position close to the front end, there are a slide rail left front bracket and a slide rail right front bracket. The slide rail left front bracket and the slide rail right front bracket are provided with assembly holes. Both ends of the stabilizer bar are respectively arranged in the assembly holes of the slide rail left front bracket and the slide rail right front bracket, and can rotate relative to the upper slide rail. When the backrest assembly is flipped forward by the backrest motor, the backrest assembly and the seat cushion assembly are linked through the seat-back connection brackets, so that the seat cushion assembly continuously sinks with the movement of the backrest assembly, creating a flipping space.

2. The seat with a backrest that can be flattened and a cushion that can move downwards following the movement, as claimed in claim 1, wherein The seat-back connection brackets and the backrest assembly are installed together by riveting. When the backrest assembly is flipped forward, the rivets connecting the seat-back connection brackets and the backrest assembly rotate counterclockwise relative to the angle adjuster with the movement of the backrest assembly.

3. The seat with a backrest that can be flattened and a cushion that can move downwards following a certain motion, as described in claim 1, is characterized in that The left front Link brackets and the right front Link brackets and the seat cushion assembly are installed together by riveting.

4. The seat with a backrest that can be flipped flat and a cushion that follows and dives according to claim 1, characterized in that, Both ends of the stabilizer bar are installed at the assembly holes of the slide rail left front bracket and the slide rail right front bracket through bushings and thrust washers, and the connection part can rotate.

5. A seat with a backrest that can be flipped flat and a cushion that follows the movement and dives down according to claim 1, characterized in that, On the upper slide rail of the slide rail assembly, at a position close to the rear end, there are a slide rail left rear bracket and a slide rail right rear bracket. The lower connection plates of the angle adjusters on both sides of the backrest assembly are installed and fixed on the slide rail left rear bracket and the slide rail right rear bracket.

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