Seat backrest middle folding mechanism and seat

Abstract

The utility model discloses a seat backrest middle folding mechanism, which relates to the technical field of automobile seats, and comprises a middle folding part rotationally connected with a seat backrest framework, a lead screw motor for driving the middle folding part to rotate, and a connecting part for connecting the middle folding part with the lead screw motor, the lead screw motor drives the connecting part to move so as to drive the middle folding part to rotate relative to the seat backrest framework; according to the seat backrest middle folding mechanism and the seat, the angle of the upper portion of the backrest can be adjusted according to needs, the sitting posture requirements of different passengers are met, the overall comfort and reliability of the seat are improved, adjustment is conducted through the lead screw motor, the adjustment effect is more smooth and accurate, operation is easier, more convenient and faster, higher adjustment precision is provided, and the adjustment efficiency is improved. In the adjusting process, the body can be supported, balance is effectively kept, and the seat is suitable for more sitting postures.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a seat back folding mechanism and a seat. Background Technology

[0002] As vehicles are a common means of transportation, people have increasingly higher requirements for the comfort of cars as their living standards improve. The place where passengers have the most contact with a vehicle is the seat, and the comfort of the seat is the most important for passengers, especially drivers.

[0003] Currently, most car models on the market only adjust the overall angle of the backrest. A single angle adjustment cannot fully meet ergonomic requirements, and the adjustable shape of the seat cannot fully meet the needs of passengers of different sizes. During long-distance driving, an uncomfortable sitting posture will affect the passenger's experience.

[0004] Therefore, a seat back folding mechanism and a seat were designed to improve the above problems. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides a seat back folding mechanism and a seat. The seat back folding mechanism can adjust the angle of the upper part of the backrest as needed to meet the sitting posture requirements of different passengers and improve the overall comfort and reliability of the seat.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A seat back folding mechanism includes a folding part rotatably connected to a seat back frame, a lead screw motor for driving the folding part to rotate, and a connecting part connecting the folding part and the lead screw motor. The lead screw motor is mounted on the seat back frame, and the lead screw motor drives the connecting part to move so as to cause the folding part to rotate relative to the seat back frame.

[0008] As a preferred embodiment of this invention, the lead screw of the lead screw motor is provided with positive and negative threads.

[0009] As a preferred embodiment of this utility model, the connecting part includes a connecting rod, which is connected to the lead screw of the lead screw motor via a lead screw nut.

[0010] As a preferred embodiment of this invention, the connecting rods are arranged symmetrically.

[0011] As a preferred embodiment of this utility model, the connecting rod includes a first connecting rod and a second connecting rod, with the first connecting rod and the second connecting rod respectively disposed on both sides of the lead screw of the lead screw motor.

[0012] As a preferred embodiment of this utility model, a connecting rod bracket is provided on the middle folding part, and one end of the connecting rod is rotatably connected to the connecting rod bracket.

[0013] As a preferred embodiment of this utility model, the seat back frame is provided with a motor bracket and a lead screw bracket, the lead screw motor is fixed on the motor bracket, and one end of the lead screw of the lead screw motor is connected to the lead screw bracket.

[0014] As a preferred embodiment of this utility model, the folded portion is n-shaped, and the two ends of the folded portion are rotatably connected to the upper middle part of the seat back frame.

[0015] As a preferred embodiment of this invention, a headrest guide tube is provided on the folded portion.

[0016] A seat includes a seat back frame and a seat back folding mechanism, wherein the seat back folding mechanism is any of the seat back folding mechanisms described above.

[0017] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are:

[0018] 1. The present invention relates to a seat back folding mechanism and a seat, which can adjust the angle of the upper part of the backrest as needed to meet the sitting posture needs of different passengers and improve the overall comfort and reliability of the seat.

[0019] 2. The seat back folding mechanism and seat of this utility model are adjusted by a screw motor, which makes the adjustment smoother and more accurate, and the operation simpler and faster. It provides higher adjustment precision, maintains body support during the adjustment process, effectively maintains balance, and adapts to more sitting postures. Attached Figure Description

[0020] Other objects and results of this invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0021] Figure 1 This is a perspective view of the present invention after application;

[0022] Figure 2 This is another perspective view after the application of this utility model;

[0023] Figure 3 This is a perspective view of the seat back folding mechanism of this utility model in the open state;

[0024] Figure 4 This is another perspective view of the seat back folding mechanism of this utility model in the open state;

[0025] Figure 5 This is a perspective view of the seat back folding mechanism of this utility model in the closed state;

[0026] Figure 6 This is another perspective view of the seat back folding mechanism of this utility model in the closed state;

[0027] The reference numerals in the accompanying drawings include: 1. Central folding part; 2. Lead screw motor; 3. Connecting part; 4. Seat back frame; 11. Linkage bracket; 12. Headrest guide tube; 21. Lead screw; 22. Lead screw nut; 31. Linkage; 311. First link; 312. Second link; 41. Motor bracket; 42. Lead screw bracket. Detailed Implementation

[0028] The technical solutions of various embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. It should be pointed out that all accompanying drawings are exemplary representations. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0032] Reference Figures 1 to 6 , Figure 1 This is a perspective view of the rear seat back folding mechanism of this utility model in its open state. Figure 2 This is a perspective view of the closed state of the rear seat back folding mechanism of this utility model. Figure 3 andFigure 4 This is a perspective view of the seat back folding mechanism of this utility model in its open state. Figure 5 and Figure 6 This is a perspective view of the closed state of the seat back folding mechanism of this utility model. The seat back folding mechanism provided by this utility model includes a folding section 1, a lead screw motor 2, and a connecting section 3. The folding section 1 is rotatably connected to the seat back frame 4. The lead screw motor 2 is mounted on the seat back frame 4 and drives the folding section 1 to rotate. The connecting section 3 connects the folding section 1 and the lead screw motor 2. The lead screw motor 2 drives the connecting section 3 to rotate the folding section 1 relative to the seat back frame 4, thereby allowing the upper part of the backrest to be adjusted as needed to meet the sitting posture requirements of different passengers and improve the overall comfort and reliability of the seat.

[0033] In one embodiment, the lead screw 21 of the lead screw motor 2 has opposite threads, that is, the two sides of the lead screw 21 have opposite threads. The connecting part 3 includes a connecting rod 31, which is symmetrically arranged. The middle bend 1 is provided with a connecting rod bracket 11. One end of the connecting rod 31 is rotatably connected to the connecting rod bracket 11, and the other end of the connecting rod 31 is connected to the lead screw 21 of the lead screw motor 2 through a lead screw nut 22. When the lead screw 21 moves, it drives the two lead screw nuts 22 to move relative to each other, that is, to move simultaneously toward the middle part of the lead screw 21 or to move simultaneously toward both sides of the lead screw 21. Optionally, the connecting rod 31 includes a first connecting rod 311 and a second connecting rod 312, which are respectively arranged on both sides of the lead screw 21 of the lead screw motor 2.

[0034] In one embodiment, the seat back frame 4 is provided with a motor bracket 41 and a lead screw bracket 42. The lead screw motor 2 is fixed on the motor bracket 41, and one end of the lead screw 21 of the lead screw motor 2 is connected to the lead screw bracket 42. The middle folding part 1 is n-shaped, and the two ends of the middle folding part 1 are rotatably connected to the upper middle part of the seat back frame 4. The middle folding part 1 is provided with a headrest guide tube 12.

[0035] According to another embodiment of the present invention, a seat includes a seat back frame 4 and a seat back folding mechanism disposed on the seat back frame 4, wherein the seat back folding mechanism is the same as described above. The seat according to the present invention can adjust the angle of the upper part of the backrest as needed to meet the sitting posture requirements of different passengers, thereby improving the overall comfort and reliability of the seat.

[0036] The following will refer to Figures 1 to 6 The working principle of this utility model will be explained.

[0037] When passengers have different sitting posture requirements, they can adjust the screw motor 2 by using the backrest center folding adjustment button. The screw motor 2 drives the screw 21 to rotate, and the screw nut 22 moves along the screw 21 to both ends. This pushes the center folding part 1 of the upper backrest to rotate forward around the mounting point of the center folding part 1 and the seat backrest frame 4 through the connecting part 3, thereby achieving the effect of the upper backrest folding forward. Conversely, when the screw nut 22 moves towards the middle along the screw 21, the seat backrest center folding mechanism will fold backward, thereby meeting the sitting posture requirements of passengers.

[0038] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A seat back folding mechanism, characterized in that, It includes a central folding part rotatably connected to the seat back frame, a lead screw motor for driving the central folding part to rotate, and a connecting part connecting the central folding part and the lead screw motor. The lead screw motor is mounted on the seat back frame, and the lead screw motor drives the connecting part to move so as to drive the central folding part to rotate relative to the seat back frame.

2. The seat back folding mechanism according to claim 1, characterized in that, The lead screw of the lead screw motor is provided with positive and negative threads.

3. The seat back folding mechanism according to claim 1, characterized in that, The connecting part includes a connecting rod, which is connected to the lead screw of the lead screw motor via a lead screw nut.

4. A seat back folding mechanism according to claim 3, characterized in that, The connecting rods are arranged symmetrically.

5. A seat back folding mechanism according to claim 3, characterized in that, The connecting rod includes a first connecting rod and a second connecting rod, which are respectively located on both sides of the lead screw of the lead screw motor.

6. A seat back folding mechanism according to claim 3, characterized in that, The middle section is provided with a connecting rod bracket, and one end of the connecting rod is rotatably connected to the connecting rod bracket.

7. The seat back folding mechanism according to claim 1, characterized in that, The seat back frame is equipped with a motor bracket and a lead screw bracket. The lead screw motor is fixed on the motor bracket, and one end of the lead screw of the lead screw motor is connected to the lead screw bracket.

8. A seat back folding mechanism according to claim 1, characterized in that, The folded section is n-shaped, and the two ends of the folded section are rotatably connected to the upper middle part of the seat back frame.

9. A seat back folding mechanism according to claim 1, characterized in that, The folded section is equipped with a headrest guide tube.

10. A type of seat, characterized in that, It includes a seat back frame and a seat back folding mechanism, wherein the seat back folding mechanism is the seat back folding mechanism as described in any one of claims 1-9.

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