Seat and seat framework

Abstract

The utility model discloses a seat framework. The seat framework comprises a seat frame framework and a backrest framework, the seat frame framework comprises a supporting frame and a cushion framework, and a sliding rail assembly is arranged between the supporting frame and the cushion framework. The sliding rail assembly comprises a sliding rail, a sliding block and a sliding driving mechanism which are installed on the supporting frame, and the sliding block is hinged to the cushion framework; a linkage adjusting connecting rod mechanism is arranged between the seat frame skeleton and the backrest skeleton; the cushion framework comprises a first connecting plate, the linkage adjusting connecting rod mechanism comprises a second connecting plate and a connecting rod, and the second connecting plate is hinged to the first connecting plate and the supporting frame; the first connecting plate is provided with an arc sliding groove, the arc sliding groove is coaxial with a hinge shaft between the first connecting plate and the second connecting plate, and the second connecting plate is provided with a guide shaft matched with the arc sliding groove. The first end of the connecting rod is hinged with the backrest framework, and the second end is rotationally matched with the guide shaft; and the backrest framework is hinged with the cushion framework. The utility model further discloses a seat.

Description

Technical Field

[0001] The utility model relates to a seat, in particular to a seat and a seat frame. Background Art

[0002] Zero-gravity seats are designed to create a relaxed state similar to weightlessness in outer space to improve riding comfort. A Chinese patent with publication number CN208682692U discloses a zero-gravity seat for automobiles, including a seat frame frame, the front end of which is connected to a leg rest through a flip mechanism, and the rear end is equipped with a seat back through an angle adjuster, a mounting base is provided below the seat frame frame, the rear end of which is hinged on the mounting base, and an inclination adjustment mechanism is provided between the front end and the mounting base, the inclination adjustment mechanism includes a threaded seat hinged on the lower side of the seat frame frame, a gear box hinged on the upper side of the mounting base, and a screw with one end mounted in the gear box and the other end threadedly matched with the threaded seat, the gear box is built with a mutually meshing turbine and worm, wherein the turbine is sleeved on the screw, and the worm is connected to a drive motor at the end away from the meshing with the turbine.

[0003] The zero-gravity seat for automobiles is composed of a tilt adjustment mechanism consisting of a threaded seat, a gear box and a screw rod. Although the tilt angle of the seat frame skeleton relative to the mounting base can be adjusted, the weight will eventually be transferred from the screw rod to the mounting base, that is, there is stress concentration at the screw rod, resulting in a short service life of the screw rod or even breakage of the screw rod; the seat back is adjusted by an angle adjuster, that is, the seat frame angle and the seat back angle are adjusted separately, resulting in a more complicated adjustment process; after the slide rail is set, if the seat frame skeleton is tilted relative to the mounting base under the action of the tilt adjustment mechanism, a large gravity component force will be applied to the slide rail mechanism, resulting in instability of the receiving structure at the slide rail. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a seat and a seat frame, which can adjust the inclination angle of the seat cushion and the backrest in a linked manner.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] The utility model firstly proposes a seat frame, comprising a seat frame frame and a backrest frame, wherein the backrest frame is located at the rear side of the seat frame frame;

[0007] The seat frame frame includes a support frame and a cushion frame, a slide rail assembly is provided between the support frame and the cushion frame; the slide rail assembly includes a slide rail mounted on the support frame, a slider slidably matched with the slide rail, and a sliding drive mechanism for driving the slider to move along the slide rail, and the slider is hingedly connected to the cushion frame;

[0008] A linkage adjustment link mechanism is provided between the seat frame frame and the backrest frame;

[0009] The seat cushion frame includes a first connecting plate, the linkage adjustment link mechanism includes a second connecting plate and a connecting rod, the second connecting plate is hingedly connected to the first connecting plate and the support frame respectively; the first connecting plate is provided with an arc slide groove, the arc slide groove is coaxial with the hinge axis between the first connecting plate and the second connecting plate, and the second connecting plate is provided with a guide shaft matched with the arc slide groove; the first end of the connecting rod is hingedly connected to the backrest frame, and the second end is rotatably matched with the guide shaft;

[0010] The backrest frame and the seat cushion frame are hingedly connected.

[0011] Furthermore, the slide rail assemblies are provided in two numbers and are respectively located on the left and right sides of the support frame, and the linkage adjustment connecting rod mechanisms are respectively provided between the left and right sides of the seat cushion frame and the left and right sides of the backrest frame.

[0012] Furthermore, a mounting shaft is provided between the sliders of the two slide rail assemblies, and the sliding drive mechanism comprises a dual-axis motor mounted on the mounting shaft and used for driving the two sliders to move synchronously.

[0013] Furthermore, the first connecting plates are provided in two pieces and are respectively located on the left and right sides of the seat cushion frame, and a first fixed axis and a second fixed axis are respectively provided between the front and rear ends of the two first connecting plates.

[0014] Furthermore, armrests are respectively provided on the left and right sides of the backrest frame.

[0015] Furthermore, the slide rail is an inclined slide rail that is higher in the front and lower in the back.

[0016] Furthermore, a headrest frame is provided above the backrest frame, and angle adjusters are provided between the left and right sides of the headrest frame and the left and right sides of the backrest frame respectively, a synchronization shaft is provided between the two angle adjusters, and a power device transmission-connected to the synchronization shaft is installed on the backrest frame.

[0017] Furthermore, the power device includes an angle adjustment motor and a transmission box, the transmission box is fixedly mounted on the backrest frame, and the angle adjustment motor is fixedly mounted on the transmission box; the input shaft of the transmission box is transmission-connected to the angle adjustment motor, and the output shaft of the transmission box is transmission-connected to the synchronous shaft.

[0018] Furthermore, it also includes a leg rest assembly, which includes a leg rest and a leg rest adjustment mechanism for adjusting the inclination angle of the leg rest relative to the seat cushion frame.

[0019] The present utility model also provides a seat, which includes the seat frame as described above.

[0020] The beneficial effects of the present utility model are as follows:

[0021] The seat frame of the present utility model can realize the linkage adjustment of the angles of the seat cushion frame and the backrest frame. The principle is as follows: The sliding driving mechanism drives the slider to move along the slide rail, thereby driving the seat cushion frame to move and the second connecting plate to rotate around the hinge axis with the support frame; during the rotation of the second connecting plate around the hinge axis with the support frame, the driving guide shaft moves along the arc chute, and then drives the second end of the connecting rod to move along the arc chute, so as to drive the backrest frame to rotate around the hinge axis between it and the seat cushion frame, achieving the purpose of adjusting the angle of the backrest frame; in summary, the seat frame of the present utility model can link and adjust the tilting angles of the seat cushion and the backrest. Description of the Drawings

[0022] In order to make the purpose, technical solution and beneficial effects of the present utility model clearer, the present utility model provides the following drawings for illustration:

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the seat frame of the present utility model.

[0024] Description of the Reference Numerals in the Drawings:

[0025] 10 - Support frame; 11 - Slide rail; 12 - Slider; 13 - Hinge plate; 14 - Mounting shaft; 15 - Biaxial motor;

[0026] 20 - Seat cushion frame; 21 - First connecting plate; 221 - Arc chute; 22 - Second connecting plate; 23 - Connecting rod; 24 - Guide shaft; 25 - First fixed shaft; 26 - Second fixed shaft;

[0027] 30 - Backrest frame;

[0028] 40 - Headrest frame; 41 - Angle adjuster; 42 - Synchronization shaft; 43 - Third connecting plate; 44 - Fourth connecting plate; 45 - Angle adjustment motor; 46 - Transmission box. Detailed Embodiment

[0029] The following further illustrates the present utility model with reference to the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments given are not intended to limit the present utility model.

[0030] As Figure 1As shown in the figure, the seat frame of this embodiment includes a seat frame skeleton and a backrest skeleton 30. The backrest skeleton 30 is located at the rear side of the seat frame skeleton. Specifically, the seat frame skeleton includes a support frame 10 and a seat cushion skeleton 20, and a slide rail assembly is provided between the support frame 10 and the seat cushion skeleton 20. Specifically, the slide rail assembly includes a slide rail 11 installed on the support frame 10, a slider 12 slidably engaged with the slide rail 11, and a sliding drive mechanism for driving the slider 12 to move along the slide rail 11. The slider 12 is hinged to the front end or the middle part of the seat cushion skeleton 20. In this embodiment, a hinge plate 13 is installed on the slider 12, and the hinge plate 13 is hinged to the front end or the middle part of the seat cushion skeleton 20. In the preferred embodiment of this embodiment, the slide rail 11 is an inclined slide rail with a higher front end and a lower rear end. In this way, the seat cushion skeleton 20 can have a certain initial inclination angle to improve comfort.

[0031] A linkage adjustment link mechanism is provided between the seat frame skeleton and the backrest skeleton 30 of this embodiment. Specifically, the seat cushion skeleton 20 includes a first connecting plate 21, and the linkage adjustment link mechanism includes a second connecting plate 22 and a connecting rod 23. The second connecting plate 22 is hinged to the first connecting plate 21 and the support frame 10 respectively. An arc-shaped chute 211 is provided on the first connecting plate 21 of this embodiment. The arc-shaped chute 211 is coaxial with the hinge axis between the first connecting plate 21 and the second connecting plate 22. A guide shaft 24 cooperating with the arc-shaped chute 211 is provided on the second connecting plate 22. The first end of the connecting rod 23 is hinged to the backrest skeleton 30, and the second end is rotatably engaged with the guide shaft 24. The backrest skeleton 30 and the seat cushion skeleton 20 of this embodiment are hinged to each other.

[0032] Specifically, the principle of the seat frame of this embodiment to realize the linkage adjustment of the angles of the seat cushion skeleton 20 and the backrest skeleton 30 is as follows: The sliding drive mechanism drives the slider 12 to move along the slide rail 11, thereby driving the seat cushion skeleton 20 to move and the second connecting plate 22 to rotate around the hinge axis with the support frame 10; during the rotation of the second connecting plate 22 around the hinge axis with the support frame 10, the guide shaft 24 is driven to move along the arc-shaped chute 211, and then the second end of the connecting rod 23 is driven to move along the arc-shaped chute 211, so that the backrest skeleton 30 can be driven to rotate around its hinge axis with the seat cushion skeleton 20, achieving the purpose of adjusting the angle of the backrest skeleton 30.

[0033] In this embodiment, two slide rail assemblies are provided and are respectively located on the left and right sides of the support frame 10. Linkage adjustment link mechanisms are respectively provided between the left and right sides of the seat cushion skeleton 20 and the left and right sides of the backrest skeleton 30. Specifically, an installation shaft 14 is provided between the sliders 12 of the two slide rail assemblies. The sliding drive mechanism includes a double-shaft motor 15 installed on the installation shaft 14 for driving the two sliders 12 to move synchronously. The manner in which the double-shaft motor 15 drives the slider 12 to move along the slide rail 11 can be realized by various existing methods, such as a gear-rack mechanism, etc., which will not be elaborated here.

[0034] In this embodiment, the hinge plate 13 is hingedly connected to the first connecting plate 21. In this embodiment, the first connecting plates 21 are provided in two pieces and are respectively located on the left and right sides of the seat cushion frame 20. A first fixing shaft 25 and a second fixing shaft 26 are respectively provided between the front and rear ends of the two first connecting plates 21. In this way, the structural stability and reliability between the seat cushion frame 20 and the two first connecting plates 21 can be improved.

[0035] Above the backrest frame of this embodiment, a headrest frame 40 is provided. Angle adjusters 41 are respectively provided between the left and right sides of the headrest frame 40 and the left and right sides of the backrest frame 30. A synchronizing shaft 42 is provided between the two angle adjusters 41, and a power device drivingly connected to the synchronizing shaft 42 is installed on the backrest frame 30. Specifically, the angle adjuster 41 includes a first output gear disc and a second output gear disc located on both sides thereof. A third connecting plate 43 that rotates synchronously therewith is provided on the first output gear disc, and the third connecting plate 43 is fixedly connected to the backrest frame 30. A fourth connecting plate 44 that rotates synchronously therewith is provided on the second output gear disc, and the fourth connecting plate 44 is fixedly connected to the headrest frame 40. The power device of this embodiment includes an angle adjustment motor 45 and a transmission box 46. The transmission box 46 is fixedly installed on the backrest frame 30, and the angle adjustment motor 45 is fixedly installed on the transmission box 46; the input shaft of the transmission box 46 is drivingly connected to the angle adjustment motor 45, and the output shaft of the transmission box 46 is drivingly connected to the synchronizing shaft 42.

[0036] In some other embodiments, armrests can also be respectively provided on the left and right sides of the backrest frame 30 to improve comfort.

[0037] In some other embodiments, a leg rest assembly can also be provided. The leg rest assembly includes a leg rest and a leg rest adjustment mechanism for adjusting the inclination angle of the leg rest relative to the seat cushion frame to improve comfort.

[0038] This embodiment also proposes a seat, including the seat frame as described above in this embodiment.

[0039] The above-described embodiments are only preferred embodiments cited to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A seat frame, characterized in that: It comprises a seat frame frame and a backrest frame, wherein the backrest frame is located at the rear side of the seat frame frame; The seat frame frame includes a support frame and a cushion frame, a slide rail assembly is provided between the support frame and the cushion frame; the slide rail assembly includes a slide rail mounted on the support frame, a slider slidably matched with the slide rail, and a sliding drive mechanism for driving the slider to move along the slide rail, and the slider is hingedly connected to the cushion frame; A linkage adjustment link mechanism is provided between the seat frame frame and the backrest frame; The seat cushion frame includes a first connecting plate, the linkage adjustment link mechanism includes a second connecting plate and a connecting rod, the second connecting plate is hingedly connected to the first connecting plate and the support frame respectively; the first connecting plate is provided with an arc slide groove, the arc slide groove is coaxial with the hinge axis between the first connecting plate and the second connecting plate, and the second connecting plate is provided with a guide shaft matched with the arc slide groove; the first end of the connecting rod is hingedly connected to the backrest frame, and the second end is rotatably matched with the guide shaft; The backrest frame and the seat cushion frame are hingedly connected.

2. The seat frame according to claim 1, characterized in that: The slide rail assemblies are provided in two numbers and are respectively located at the left and right sides of the support frame, and the linkage adjustment link mechanisms are respectively arranged between the left and right sides of the seat cushion frame and the left and right sides of the backrest frame.

3. The seat frame according to claim 2, characterized in that: A mounting shaft is provided between the sliders of the two slide rail assemblies, and the sliding drive mechanism comprises a double-shaft motor mounted on the mounting shaft and used for driving the two sliders to move synchronously.

4. The seat frame according to claim 1, characterized in that: The first connecting plates are provided in two pieces and are respectively located at the left and right sides of the seat cushion frame, and a first fixed axis and a second fixed axis are respectively provided between the front and rear ends of the two first connecting plates.

5. The seat frame according to claim 1, characterized in that: Armrests are respectively arranged on the left and right sides of the backrest frame.

6. The seat frame according to claim 1, characterized in that: The slide rail is an inclined slide rail with a high front and a low back.

7. The seat frame according to claim 1, characterized in that: A headrest frame is provided above the backrest frame, and angle adjusters are provided between the left and right sides of the headrest frame and the left and right sides of the backrest frame respectively. A synchronization shaft is provided between the two angle adjusters, and a power device transmission-connected to the synchronization shaft is installed on the backrest frame.

8. The seat frame according to claim 7, characterized in that: The power device includes an angle adjustment motor and a transmission box. The transmission box is fixedly mounted on the backrest frame, and the angle adjustment motor is fixedly mounted on the transmission box. The input shaft of the transmission box is transmission-connected to the angle adjustment motor, and the output shaft of the transmission box is transmission-connected to the synchronous shaft.

9. The seat frame according to claim 1, characterized in that: It also includes a leg rest assembly, which includes a leg rest and a leg rest adjustment mechanism for adjusting the inclination angle of the leg rest relative to the seat cushion frame.

10. A seat, characterized in that: Comprising a seat frame as described in any one of claims 1-9.

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