Novel backrest and seat cushion linkage mechanism for high-speed rail

Abstract

The utility model discloses a novel high-speed rail backrest and seat cushion linkage mechanism, which belongs to the technical field of high-speed rail seats and comprises a rotating stand structure, linear guide rails are symmetrically mounted on two sides in the rotating stand structure along the width direction, a seat frame is slidably arranged in the rotating stand structure along the width direction, and guide wheels are rotatably mounted at the bottom ends of two sides of the seat frame along the linear direction. The guide wheels are located in the linear guide rails, and guide grooves are formed in the side plates on the two sides of the seat frame. The swing arms are symmetrically and fixedly installed on the two sides of the backrest framework, one ends of the swing arms can slide in the sliding ways on the two sides of the rotating stand structure, the other ends of the swing arms can slide in the guide grooves in the side edges of the seat frame, and meanwhile the seat frame can linearly slide on the rotating stand structure, so that linkage control can be achieved between the seat frame and the backrest framework; the H point is kept unchanged when the seat frame and the backrest framework are linked, and the action is not driven by a motor, so that the purposes of simplifying the mechanism, reducing the weight of the seat and improving the comfort of the seat and the operation convenience are achieved.

Description

Technical Field

[0001] This utility model relates to a novel linkage mechanism for high-speed rail backrests and seat cushions, belonging to the field of high-speed rail seat technology. Background Technology

[0002] Currently, the first-class high-speed rail seats produced by the company are generally of the form where the backrest rotates and the seat cushion is fixed, and the backrest and seat cushion cannot be linked. Alternatively, they are of the cradle type structure to achieve linkage between the backrest and seat cushion, or a structure that relies on the translation of the seat cushion to drive the backrest to tilt. In the former case, the relative position of the H point and the seat cushion changes during the movement of the seat, and a motor is required to drive it, resulting in a heavy structure. In the latter case, the power of the buttocks is required to drive the seat cushion to pull the backrest to tilt, which is not very convenient to operate. In addition, the existing mechanism that achieves the above functions has the pivot at the H point. Because the H point overlaps with the position of other mechanisms, the moving mechanism is close to other structures. Due to the influence of assembly errors, this mechanism is at risk of colliding with other mechanisms. Therefore, the assembly precision requirements are high.

[0003] To address these issues, a novel linkage mechanism for high-speed rail backrests and seat cushions was designed. Utility Model Content

[0004] The main purpose of this utility model is to provide a new type of high-speed rail backrest and seat cushion linkage mechanism to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A novel high-speed rail backrest and seat cushion linkage mechanism includes a rotating frame structure. Linear guide rails are symmetrically installed on both sides of the rotating frame structure along its width. A seat frame is slidably installed inside the rotating frame structure along its width. Guide wheels are rotatably installed on the bottom ends of both sides of the seat frame along a straight line, and the guide wheels are located inside the linear guide rails. Guide grooves are provided on the side plates of both sides of the seat frame. A return gas spring is installed between the bottom end of the rotating frame structure and the bottom of the seat frame via a pin, and the return gas spring is parallel to the length direction of the linear guide rails. Slide tracks are symmetrically installed on both sides of the rear end of the rotating frame structure. A backrest frame is installed at the rear end of the rotating frame structure. Swing arms are symmetrically arranged on both sides of the backrest frame. Bolted bearings are installed on the outer sides of the swing arms, passing through the swing arms and fixedly connected to the backrest frame. The outer ends of the bolted bearings are slidably installed inside the slide tracks. A slider is fixed to the inner side of the swing arm away from the backrest frame, and the slider is slidably installed inside the guide groove.

[0007] Preferably, the rear ends of both sides of the rotating frame structure are provided with arc-shaped through grooves, and the slides are all located inside the arc-shaped through grooves.

[0008] Preferably, the outer side of the slide and the side of the rotating frame structure are provided with matching mounting holes, and the slide is fixedly connected to the rotating frame structure by screws.

[0009] Preferably, screws are fixedly installed between the linear guide rail and the rotating frame structure, and the screws are evenly distributed along the linear direction of the linear guide rail.

[0010] Preferably, screws are fixed to the inner side of the slider, the screws pass through the inside of the guide groove, and the diameter of the screw head is greater than the width of the guide groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model features symmetrically fixed swing arms on both sides of the backrest frame. One end of the swing arm can slide inside the slide rails on both sides of the rotating frame structure, and the other end of the swing arm can slide inside the guide groove on the side of the seat frame. At the same time, the seat frame can slide linearly on the rotating frame structure, so that the seat frame and the backrest frame can be linked and controlled. This ensures that the H point remains unchanged when the seat frame and the backrest frame are linked, and the movement does not rely on motor drive, thereby simplifying the mechanism, reducing the weight of the seat, and improving the comfort and ease of operation of the seat.

[0013] 2. This utility model has a simple structure. It transforms the original axis that rotates around point H by moving the moving parts of the mechanism downward to avoid interference with the installation part of the small table, increase the installation space of the small table, and at the same time reduce the installation size of the mechanism, thereby reducing the weight of the whole chair and meeting the requirements of lightweighting. Attached Figure Description

[0014] Figure 1 This is an exploded view of the structure of this utility model;

[0015] Figure 2 This is the front view of the present invention;

[0016] Figure 3 This is a side sectional view of the backrest in its initial state according to this utility model;

[0017] Figure 4 This is a side sectional view of the backrest in an inclined state according to this utility model.

[0018] In the diagram: 1. Frame structure; 2. Linear guide rail; 3. Seat frame; 4. Guide groove; 5. Guide wheel; 6. Return gas spring; 7. Slide rail; 8. Backrest frame; 9. Swing arm; 10. Bearing with bolts; 11. Slider. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the 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, not all, of the embodiments of this utility model.

[0020] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Example 1

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a novel high-speed rail backrest seat cushion linkage mechanism, including a rotating frame structure 1. Linear guide rails 2 are symmetrically installed on both sides of the interior of the rotating frame structure 1 along the width direction. A seat frame 3 is slidably arranged inside the rotating frame structure 1 along the width direction. Guide wheels 5 are rotatably installed on the bottom ends of both sides of the seat frame 3 along the linear direction, and the guide wheels 5 are located inside the linear guide rails 2. Guide grooves 4 are provided on the side plates of both sides of the seat frame 3. A return gas spring 6 is installed between the bottom end of the rotating frame structure 1 and the bottom of the seat frame 3 via a pin. Parallel to the length direction of the linear guide rail 2, slide rails 7 are symmetrically installed on both sides of the rear end of the rotating frame structure 1. A backrest frame 8 is installed at the rear end of the rotating frame structure 1. Swing arms 9 are symmetrically arranged on both sides of the backrest frame 8. Bolted bearings 10 are installed on the outer side of each swing arm 9. The bolted bearings 10 pass through the swing arm 9 and are fixedly connected to the backrest frame 8. The outer ends of the bolted bearings 10 are slidably arranged inside the slide rails 7. A slider 11 is fixed on the inner side of each swing arm 9 away from the backrest frame 8, and the slider 11 is slidably arranged inside the guide groove 4.

[0026] In the initial state, two bolted bearings 10 connect the swing arm 9 and the backrest frame 8 as a whole. The slide 7 is fixed on the rotating frame structure 1, and the end of the bolted bearing 10 is located at the inner top of the slide 7. The bolted bearing 10 can slide downward along the slide 7. The slider 11 at the end of the swing arm 9 is inside the guide groove 4. When adjusting the backrest and seat cushion, the passenger applies force through their legs and back, and the passenger's back applies force on the backrest foam. The bolted bearing 10 at the end of the swing arm 9 moves downward inside the slide 7. At the same time, the slider 11 on the swing arm 9 moves upward inside the guide groove 4, and applies a pushing force to the front end of the seat frame 3 during the upward movement. The seat frame 3 slides between the two linear guide rails 2 to realize the linkage between the backrest and the seat cushion, and ensure that the position of the seat cushion at point H remains relatively unchanged when it moves.

[0027] Example 2

[0028] The solution in Example 1 will be further described below with reference to its specific working method.

[0029] like Figure 1 As shown, in a preferred embodiment, based on the above method, the rear ends of both sides of the rotating frame structure 1 are provided with arc-shaped through grooves, and the slide rails 7 are all located inside the arc-shaped through grooves. By hiding the slide rails 7 inside the arc-shaped through grooves, the stability of the slide rails 7 can be improved.

[0030] like Figure 1 As shown, in a preferred embodiment, based on the above method, the outer side of the slide 7 and the side of the rotating frame structure 1 are further provided with mutually cooperating mounting holes. The slide 7 is fixedly connected to the rotating frame structure 1 by screws. With the reinforcement of multiple sets of screws, the installation stability of the slide 7 is better.

[0031] like Figure 1 As shown, in a preferred embodiment, based on the above method, screws are further fixedly installed between the linear guide rail 2 and the rotating frame structure 1, and the screws are evenly arranged along the straight direction of the linear guide rail 2. The linear guide rail 2 is uniformly reinforced by the screws to ensure the stable sliding of the seat frame 3.

[0032] like Figure 1 As shown, in a preferred embodiment, based on the above method, screws are fixed to the inner side of the slider 11. The screws pass through the inside of the guide groove 4, and the diameter of the screw head is greater than the width of the guide groove 4. By using the limiting effect of the screws, it can be ensured that the slider 11 is always located inside the guide groove 4.

[0033] Example 3

[0034] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0035] In the initial state, two bolted bearings 10 connect the swing arm 9 and the backrest frame 8 as a whole. The slide 7 is fixed in the arc-shaped through groove on the side of the rotating frame structure 1 by screws, and the end of the bolted bearing 10 is located at the inner top of the slide 7. The bolted bearing 10 can slide downward along the slide 7, while the slider 11 at the end of the swing arm 9 is in the middle position of the guide groove 4. When adjusting the backrest and seat cushion, the passenger applies force through the legs and back, and the passenger's back applies force on the backrest foam. The bolted bearing 10 at the end of the swing arm 9 moves downward inside the slide 7, while the slider 11 on the swing arm 9 moves upward inside the guide groove 4. During the upward movement, it applies a pushing force to the front end of the seat frame 3. The seat frame 3 slides between the two linear guide rails 2. The seat frame 3 moves horizontally to the front end and compresses the return gas spring 6 by a certain length. The change in the position of both ends of the swing arm 9 moves the moving parts of the mechanism downward, realizing the linkage between the backrest and the seat cushion, and ensuring that the position of the seat cushion at point H remains relatively unchanged when it moves.

[0036] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A novel high-speed rail backrest seat linkage mechanism, comprising a rotating frame structure (1), characterized in that: The rotating frame structure (1) has linear guide rails (2) symmetrically installed on both sides along the width direction inside. A seat frame (3) is slidably installed inside the rotating frame structure (1) along the width direction. Guide wheels (5) are rotatably installed on the bottom ends of both sides of the seat frame (3) along the linear direction, and the guide wheels (5) are located inside the linear guide rails (2). Guide grooves (4) are opened on the side plates of both sides of the seat frame (3). A return air spring (6) is installed between the bottom end of the rotating frame structure (1) and the bottom of the seat frame (3) via a pin, and the return air spring (6) is parallel to the length direction of the linear guide rails (2). 1) Slide rails (7) are symmetrically installed on both sides of the rear end. Backrest frame (8) is installed at the rear end of the rotating frame structure (1). Swing arms (9) are symmetrically arranged on both sides of the backrest frame (8). Bolted bearings (10) are installed on the outer side of the swing arms (9). The bolted bearings (10) pass through the swing arms (9) and are fixedly connected to the backrest frame (8). The outer ends of the bolted bearings (10) are slidably arranged inside the slide rails (7). A slider (11) is fixed on the inner side of the swing arms (9) away from the backrest frame (8). The slider (11) is slidably arranged inside the guide groove (4).

2. A novel high-speed rail backrest seat linkage mechanism according to claim 1, characterized in that: The rear ends of both sides of the rotating frame structure (1) are provided with arc-shaped through grooves, and the slides (7) are all located inside the arc-shaped through grooves.

3. A novel high-speed rail backrest seat linkage mechanism according to claim 1 or 2, characterized in that: The slide (7) and the side of the rotating frame structure (1) are provided with matching mounting holes. The slide (7) is fixedly connected to the rotating frame structure (1) by screws.

4. The novel high-speed rail backrest and seat cushion linkage mechanism according to claim 1, characterized in that: Screws are fixedly installed between the linear guide rail (2) and the rotating frame structure (1), and the screws are evenly arranged along the straight direction of the linear guide rail (2).

5. The novel high-speed rail backrest and seat cushion linkage mechanism according to claim 1, characterized in that: Screws are fixed to the inside of the slider (11), and the screws pass through the inside of the guide groove (4), with the screw head diameter being larger than the width of the guide groove (4).

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