Zero-gravity seat framework with backrest capable of being turned flat forwards

Abstract

The zero-gravity seat framework comprises the backrest, a cushion, a front connecting rod, a front fixing support and a rear fixing support, the front end of the cushion is hinged to the upper end of the front connecting rod, the zero-gravity seat framework further comprises a zero-gravity connecting rod, the front end of the zero-gravity connecting rod is hinged to the lower end of the front connecting rod, and the rear end of the zero-gravity connecting rod is hinged to the rear fixing support. The rear end of the zero-gravity connecting rod is hinged to the front end of the zero-gravity lead screw motor, and the middle of the zero-gravity connecting rod is hinged to the front fixing support. The lower end of the backrest is hinged to the rear fixing support, the rear end of the cushion is hinged to the lower portion of the backrest, and the hinge point is located above the fixed hinge point of the backrest. The seat cushion and the backrest are hinged, share one set of connecting rod mechanism and are provided with respective driving assemblies, so that the two functions of zero gravity and linkage of backrest turnover and seat cushion diving exist in one set of connecting rod structure at the same time, the occupied space of structural arrangement is small, the comfort requirement of people in the zero-gravity state is met, and the comfort of the people in the zero-gravity state is improved. And the large space requirement of placing the luggage case under the state that the backrest is turned flat is also met.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a zero-gravity seat frame with a backrest capable of being folded forward and flattened. Background Art

[0002] Car seats are an important part of car interiors. As people's requirements for car comfort, functionality and space continue to increase. At present, under the requirement of comfort, there is an increasing demand for zero-gravity seats in the rear car seats, but the zero-gravity structure is complex and takes up a lot of space. At the same time, as people's demand for luggage space is also increasing, the luggage space is often expanded by flipping the backrest forward to be flush with the rear luggage body surface. In order to achieve the flattening of the backrest in the limited rear body space, it is generally achieved through the structure of the backrest flipping and the seat cushion diving. Since the two functions are independent of each other in structure, the space occupied by the layout is likely to conflict with each other. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a zero-gravity seat frame that can realize the diving of the zero-gravity seat cushion and the forward folding of the backrest.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a zero-gravity seat frame with a backrest that can be flipped forward, including a backrest, a seat cushion, a front connecting rod, a front fixed bracket and a rear fixed bracket, the backrest is equipped with an angle adjuster and a backrest motor, the seat cushion is equipped with a zero-gravity screw motor, the front end of the seat cushion is hinged to the upper end of the front connecting rod, and also includes a zero-gravity connecting rod, the front end of the zero-gravity connecting rod is hinged to the lower end of the front connecting rod, the rear end of the zero-gravity connecting rod is hinged to the front end of the zero-gravity screw motor, and the middle part of the zero-gravity connecting rod is hinged to the front fixed bracket; the lower end of the backrest is hinged to the rear fixed bracket, and the rear end of the seat cushion is hinged to the lower part of the backrest, and its hinge point is located above the fixed hinge point of the backrest, and the rear end of the zero-gravity screw motor is hinged and installed on the rear fixed bracket;

[0005] When the zero-gravity seat frame starts the backrest flipping flat and the seat cushion diving function from the initial state, the zero-gravity screw motor remains stationary, and the backrest motor drives the angle adjuster to make the backrest rotate forward around the fixed hinge point with the fixed bracket, driving the seat cushion and the front connecting rod to rotate forward and downward, realizing the backrest flipping flat and the seat cushion diving state function;

[0006] When the zero-gravity seat frame starts the zero-gravity function from the initial state, the zero-gravity screw motor starts to extend the front end, causing the zero-gravity connecting rod to rotate clockwise around the hinge point with the front fixed bracket, driving the front connecting rod and the seat cushion to move upward to achieve the zero-gravity posture with the front end of the seat cushion lifted. At the same time, the backrest motor drives the angle adjuster to make the backrest rotate backward around the fixed hinge point with the fixed bracket, and the backrest achieves a reclining zero-gravity posture, thereby realizing the zero-gravity function of the seat cushion and backrest.

[0007] Preferably, the zero-gravity link is "V"-shaped, and the hinge point between the zero-gravity link and the front fixed bracket is located at the corner of the zero-gravity link, and in the initial state, the hinge points at both ends of the zero-gravity link are lower than the hinge point in the middle. When the rear end of the zero-gravity link rotates forward driven by the zero-gravity screw motor, the front end of the zero-gravity link rotates upward. The "V" shape helps to drive the front section of the zero-gravity link to rotate upward when the rear end of the zero-gravity link moves forward, thereby realizing the zero-gravity function of the seat.

[0008] Preferably, the front connecting rod and the front fixed bracket are each provided with a pair and are symmetrically arranged on the left and right sides of the seat cushion; the zero-gravity connecting rod includes a cross bar, a rear end rod and a pair of front end rods, the cross bar is rotatably installed between the two front fixed brackets, the two front end rods are symmetrically fixed at the left and right ends of the cross bar and are hinged to the front connecting rod on the corresponding sides, the rear end rod is fixed at the middle part of the cross bar and is hinged to the zero-gravity screw motor, and there is an angle between the front end rod and the rear end rod, which is a "V" shape.

[0009] Preferably, a pair of the recliners are provided, respectively arranged on the left and right sides of the backrest and located between the backrest and the rear fixed bracket. The inner side of the recliner is welded to the backrest, and the outer side of the recliner is welded to the rear fixed bracket. Recliners are provided on both sides of the backrest, which facilitates the synchronous rotation of the two sides of the backrest.

[0010] Preferably, a linkage rod is provided at the bottom end of the backrest, the linkage rod is inserted between the two angle adjusters, and the backrest motor drives the angle adjusters on both sides to rotate synchronously through the linkage rod, so that the backrest rotates around the fixed hinge point with the fixed bracket.

[0011] Preferably, the backrest motor is fixedly connected to the backrest by bolts.

[0012] Preferably, the front fixing bracket and the rear fixing bracket are fixedly mounted on the vehicle body floor by bolts.

[0013] Preferably, the rear end of the seat cushion is bent vertically upward to form an "L" shape as a whole, and the top end of the vertical portion is hinged to the backrest.

[0014] The beneficial effects of the utility model are as follows: by hingedly connecting the backrest and the seat cushion, using a set of connecting rod mechanisms and equipping them with respective driving components, the two functions of zero gravity and backrest flattening and seat cushion diving are realized simultaneously in a set of connecting rod structures; when the backrest motor drives the backrest to rotate forward from an initial position, the backrest flattening and seat cushion diving functions can be realized; when the backrest motor drives the backrest to rotate backward from an initial position and the zero-gravity screw motor drives the extension, the zero-gravity function can be realized; the structural arrangement occupies a small space, which not only meets people's comfort requirements in a zero-gravity state, but also meets the large space requirement for placing a suitcase in a flat backrest state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the initial state of the utility model;

[0017] Figure 3 This is a schematic diagram of the utility model in which the backrest is folded forward and the seat cushion is submerged;

[0018] Figure 4 It is a schematic diagram of the zero gravity state of the utility model;

[0019] Figure 5 It is a connection diagram of the zero gravity connecting rod and the zero gravity lead screw motor;

[0020] Figure 6 This is the initial state principle diagram of the utility model;

[0021] Figure 7 This is a schematic diagram of the utility model in which the backrest is folded forward and the seat cushion is submerged;

[0022] Figure 8 This is the zero gravity state principle diagram of the utility model;

[0023] In the figure: 1-backrest, 2-seat cushion, 3-front connecting rod, 4-zero gravity connecting rod, 5-front fixed bracket, 6-zero gravity screw motor, 7-rear fixed bracket, 8-angle adjuster, 9-linkage rod, 10-backrest motor. DETAILED DESCRIPTION

[0024] In order to better understand the improvements made by the present invention relative to the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] like Figure 1As shown in the figure, the zero-gravity seat frame with a backrest that can be folded forward is mainly composed of a backrest 1, a seat cushion 2, a front connecting rod 3, a front fixing bracket 5, a rear fixing bracket 7 and a zero-gravity connecting rod 4, wherein the backrest 1 is equipped with a recliner 8 and a backrest motor 10, the seat cushion 2 is equipped with a zero-gravity screw motor 6, the front fixing bracket 5 and the rear fixing bracket 7 are fixed to the vehicle body floor by bolts, and the zero-gravity seat frame is in an initial state as shown in FIG. Figure 2 shown.

[0026] The front end of the seat cushion 2 is hinged to the upper end of the front link 3, the front end of the zero gravity link 4 is hinged to the lower end of the front link 3, the rear end of the zero gravity link 4 is hinged to the front end of the zero gravity screw motor 6, and the middle part of the zero gravity link 4 is hinged to the front fixed bracket 5. In order to make the seat cushion 2 move together with balanced force on both sides, a pair of front links 3 and front fixed brackets 5 are provided and symmetrically arranged on the left and right sides of the seat cushion 2, and the zero gravity link 4 is mainly composed of a cross bar, a rear end bar and a pair of front end bars, and there is an angle between the front end bar and the rear end bar, forming a "V" shape.

[0027] The cross bar is rotatably installed between the two front fixed brackets 5, the rear end rod is fixed in the middle of the cross bar, the two front end rods are symmetrically fixed at the left and right ends of the cross bar and hinged with the front connecting rod 3 on the corresponding side, and the hinge point between the zero gravity connecting rod 4 and the front fixed bracket 5 is located at the corner of the zero gravity connecting rod 4, that is, at the cross bar, and in the initial state, the hinge points at both ends of the zero gravity connecting rod 4 are lower than the hinge point in the middle, so that when the rear end of the zero gravity connecting rod 4 rotates forward under the drive of the zero gravity screw motor 6, the front end of the zero gravity connecting rod 4 rotates upward.

[0028] In order to make the seat cushion 2 and the backrest 1 use a set of connecting rod mechanisms together, and realize the two functions of zero gravity and backrest flattening and seat cushion diving, the lower end of the backrest 1 is hinged to the rear fixed bracket 7, and the rear end of the seat cushion 2 is hinged to the lower part of the backrest 1, and its hinge point is located above the fixed hinge point of the backrest 1. The rear end of the zero gravity screw motor 6 is hingedly installed on the rear fixed bracket 7, and the front end of the zero gravity screw motor 6 is hinged to the rear end rod as shown in FIG. Figure 5 In order to allow the backrest 1 to be folded forward and the seat cushion to sink to reserve a corresponding space, the rear end of the seat cushion 2 is vertically bent upward to form an "L" shape as a whole, and the top of the vertical part is hinged to the backrest 1.

[0029] A recliner 8 is provided between the backrest 1 and the rear fixed bracket 7, and a pair of recliners 8 are provided, which are respectively arranged on the left and right sides of the backrest 1 and between the backrest 1 and the rear fixed bracket 7. The inner side of the recliner 8 is welded to the backrest 1, and the outer side of the recliner 8 is welded to the rear fixed bracket 7. At the same time, a linkage rod 9 is provided at the bottom end of the backrest 1, and the linkage rod 9 is inserted between the two recliners 8. The backrest 1 is fixedly installed with a backrest motor 10 by bolts. The backrest motor 10 drives the recliners 8 on both sides to rotate synchronously through the linkage rod 9, so that the backrest 1 rotates around the fixed hinge point with the fixed bracket 7.

[0030] like Figure 7 As shown, when the zero-gravity seat frame starts the backrest flattening and seat cushion diving function from the initial state, the zero-gravity screw motor 6 remains stationary, and the backrest motor 10 drives the angle adjuster 8, so that the backrest 1 rotates forward around the fixed hinge point with the fixed bracket 7, driving the seat cushion 2 and the front connecting rod 3 to rotate forward and downward. Under the action of the backrest 1, the rear end of the seat cushion 2 moves forward and rotates clockwise relative to the backrest 1. At the same time, the front end of the seat cushion 2 drives the front connecting rod 3 forward. Since the zero-gravity screw motor 6 remains stationary, the zero-gravity connecting rod 4 connected to the zero-gravity screw motor 6 remains stationary. The front connecting rod 3 rotates counterclockwise around the hinge point with the zero-gravity connecting rod 4 and the front end moves downward, causing the front end of the seat cushion 2 to sink, as shown in FIG. Figure 3 The function of the backrest being folded flat and the seat cushion being in a diving state is realized as shown.

[0031] like Figure 8 As shown, when the zero-gravity seat frame starts the zero-gravity function from the initial state, the zero-gravity screw motor 6 starts to extend its front end, driving the rear end rod of the zero-gravity link 4 to move forward, so that the zero-gravity link 4 rotates clockwise around the hinge point with the front fixed bracket 5, and the front end rod of the zero-gravity link 4 rotates upward. At the same time, the backrest motor 10 drives the angle adjuster 8 to make the backrest 1 rotate backward around the fixed hinge point with the fixed bracket 7. Under the action of the backrest 1, the seat cushion 2 moves backward as a whole. Under the action of the backward movement of the seat cushion 2 and the upward movement of the front end rod of the zero-gravity link 4, the front link 3 and the seat cushion 2 move upward to complete the zero-gravity posture with the front end of the seat cushion 2 lifted, and the backrest 1 achieves a zero-gravity posture of lying backward, so as to be shown in FIG. Figure 4 As shown, the zero gravity function of the seat cushion and backrest is realized.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A zero-gravity chair frame with a backrest that can be folded forward, comprising a backrest (1), a seat cushion (2), a front connecting rod (3), a front fixing bracket (5) and a rear fixing bracket (7), wherein the backrest (1) is equipped with a recliner (8) and a backrest motor (10), the seat cushion (2) is equipped with a zero-gravity screw motor (6), the front end of the seat cushion (2) is hinged to the upper end of the front connecting rod (3), and is characterized in that: It also includes a zero-gravity connecting rod (4), the front end of the zero-gravity connecting rod (4) is hinged to the lower end of the front connecting rod (3), the rear end of the zero-gravity connecting rod (4) is hinged to the front end of the zero-gravity screw motor (6), and the middle part of the zero-gravity connecting rod (4) is hinged to the front fixed bracket (5); the lower end of the backrest (1) is hinged to the rear fixed bracket (7), and the rear end of the seat cushion (2) is hinged to the lower part of the backrest (1), and the hinge point is located above the fixed hinge point of the backrest (1), and the rear end of the zero-gravity screw motor (6) is hinged and installed on the rear fixed bracket (7); When the zero-gravity seat frame starts the backrest flipping flat and the seat cushion diving function from the initial state, the zero-gravity screw motor (6) remains stationary, and the backrest motor (10) drives the angle adjuster (8), so that the backrest (1) rotates forward around the fixed hinge point with the fixed bracket (7), driving the seat cushion (2) and the front connecting rod (3) to rotate forward and downward, thereby realizing the backrest flipping flat and the seat cushion diving state function; When the zero-gravity seat frame starts the zero-gravity function from the initial state, the zero-gravity screw motor (6) starts to extend its front end, causing the zero-gravity connecting rod (4) to rotate clockwise around the hinge point with the front fixed bracket (5), driving the front connecting rod (3) and the seat cushion (2) to move upward to achieve a zero-gravity posture in which the front end of the seat cushion (2) is lifted. At the same time, the backrest motor (10) drives the angle adjuster (8) to rotate the backrest (1) backward around the fixed hinge point with the fixed bracket (7), and the backrest (1) achieves a zero-gravity posture of lying backward, thereby realizing the zero-gravity function of the seat cushion and backrest.

2. A zero-gravity chair frame with a backrest that can be folded forward according to claim 1, characterized in that: The zero gravity connecting rod (4) is in a "V" shape. The hinge point between the zero gravity connecting rod (4) and the front fixed bracket (5) is located at the corner of the zero gravity connecting rod (4). In the initial state, the hinge points at both ends of the zero gravity connecting rod (4) are lower than the hinge point in the middle. When the rear end of the zero gravity connecting rod (4) rotates forward under the drive of the zero gravity screw motor (6), the front end of the zero gravity connecting rod (4) rotates upward.

3. A zero-gravity chair frame with a backrest that can be folded forward according to claim 2, characterized in that: The front connecting rod (3) and the front fixing bracket (5) are each provided with a pair and are symmetrically arranged on the left and right sides of the seat cushion (2); the zero-gravity connecting rod (4) comprises a cross bar, a rear end rod and a pair of front end rods, the cross bar is rotatably installed between the two front fixing brackets (5), the two front end rods are symmetrically fixed to the left and right ends of the cross bar and are hinged to the front connecting rod (3) on the corresponding side, the rear end rod is fixed to the middle of the cross bar and is hinged to the zero-gravity screw motor (6), and there is an angle between the front end rod and the rear end rod, which is in a "V" shape.

4. The zero-gravity chair frame with a backrest that can be folded forward according to claim 1, characterized in that: A pair of the angle adjusters (8) are provided, which are respectively arranged on the left and right sides of the backrest (1) and located between the backrest (1) and the rear fixed bracket (7); the inner side of the angle adjuster (8) is welded to the backrest (1), and the outer side of the angle adjuster (8) is welded to the rear fixed bracket (7).

5. A zero-gravity chair frame with a backrest that can be folded forward according to claim 4, characterized in that: A linkage rod (9) is provided at the bottom end of the backrest (1), and the linkage rod (9) is inserted between the two angle adjusters (8). The backrest motor (10) drives the angle adjusters (8) on both sides to rotate synchronously through the linkage rod (9), so that the backrest (1) rotates around the fixed hinge point with the fixed bracket (7).

6. The zero-gravity chair frame with a backrest that can be folded forward according to claim 1, characterized in that: The backrest motor (10) is fixedly connected to the backrest (1) via bolts.

7. The zero-gravity chair frame with a backrest that can be folded forward according to claim 1, characterized in that: The front fixing bracket (5) and the rear fixing bracket (7) are fixedly mounted on the vehicle body floor by means of bolts.

8. The zero-gravity chair frame with a backrest that can be folded forward according to claim 1, characterized in that: The rear end of the seat cushion (2) is vertically bent upwards to form an "L" shape as a whole, and the top end of the vertical portion is hinged to the backrest (1).

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