low block value back row zero gravity seat frame

Abstract

The utility model discloses low block value's rear row zero gravity seat skeleton relates to the field of car seat, and the technical scheme of the utility model discloses base frame body, seat cushion frame body and backrest frame body, the seat cushion frame body includes two groups of seat backrest connecting plate fixed through connecting rod each other, two groups of seat backrest connecting plate distribution in the outside of base frame body, and the back of two groups of seat backrest connecting plate is hinged with base frame body, the front of seat cushion frame body and base frame body between be provided with height adjusting assembly, and height adjusting assembly is used for driving the front end of seat cushion frame body swing upward, and the lower part of backrest frame body is hinged with the rear part of seat cushion frame body. Through the layout mode of inside and outside distribution of base frame body and seat backrest connecting plate, make seat cushion's block value reduce significantly.

Description

Technical Field

[0001] This utility model relates to the field of automotive seats, and in particular to a rear zero-gravity seat frame with low block value. Background Technology

[0002] Zero-gravity seats are a popular seating mode. Their core principle is adjusting the backrest angle to align the heart and feet at the same level, theoretically reducing blood circulation pressure and improving comfort. They are currently used in some cars. The block value of a car seat is an important parameter for evaluating seat space, usually a design benchmark. The vertical distance from point h to the bottom surface of the slide rail (block value) is a key indicator of seat space; a lower block value means more seat space. However, for zero-gravity car seats, due to their more complex raised structure compared to ordinary car seats, they occupy a significant amount of car space, compressing the fuel tank volume and significantly increasing the seat's block value. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a rear zero-gravity seat frame with low block value. By distributing the base frame and the seat back connecting plate in an inner and outer manner, the block value of the seat cushion is significantly reduced.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a rear zero-gravity seat frame with low block value, including a base frame, a seat cushion frame and a backrest frame;

[0005] The seat frame includes two sets of seat back connecting plates that are fixed to each other by connecting rods. The two sets of seat back connecting plates are distributed on the outside of the base frame, and the rear of the two sets of seat back connecting plates are hinged to the base frame.

[0006] A height adjustment component is provided between the front part of the seat cushion frame and the base frame, and the height adjustment component is used to drive the front end of the seat cushion frame to swing upward.

[0007] The lower part of the backrest frame is hinged to the rear part of the seat cushion frame.

[0008] In this design, the lower end of the backrest frame is connected to the rear section of the seat cushion frame. Therefore, on one hand, the backrest frame can be adjusted relative to the seat cushion frame at an angle; on the other hand, by changing the swing of the front end of the seat cushion frame, the angle of the backrest frame can be adjusted simultaneously with the angle of the seat cushion frame. This allows for a large-angle adjustment of the backrest, enabling the user to achieve a comfortable, zero-gravity sitting posture.

[0009] This solution significantly reduces the vertical thickness space occupied by placing the seat back connecting plate on the outside of the base frame, i.e., the base frame and the seat back connecting plate are distributed inside and outside. The overall height of the seat cushion frame is reduced, effectively reducing the overall block value of the seat frame and significantly improving comfort.

[0010] Preferably, the height adjustment assembly includes a self-locking motor, a gear sector, a rocker arm, and a connecting rod;

[0011] The self-locking motor is mounted on the base frame, and the output end of the self-locking motor is equipped with a drive gear. The center of the gear sector is hinged to the base frame via a rotating shaft. The gear sector meshes with the drive gear. The rotating shaft is fixed with the swing rod. The two ends of the connecting rod are respectively hinged to the end of the swing rod and the front of the seat frame.

[0012] The self-locking motor and drive gear can drive the gear sector to swing, thereby realizing the swing of the rocker arm. The rocker arm pushes the front end of the seat frame to swing up and down through the connecting rod. The whole control process is very convenient and reliable.

[0013] Preferably, the gear sector is coaxially provided with an arc-shaped hole, and the base frame is provided with a limiting pin passing through the arc-shaped hole. During the swinging process of the gear sector, the limiting pin moves within the arc-shaped hole. The cooperation between the arc-shaped hole and the limiting pin can significantly improve the stability of the gear sector's swing and limit the swing angle of the gear sector.

[0014] Preferably, the seat back connecting plate includes a main board and a transition plate, the transition plate is fixed to the rear of the main board, the transition plate extends upward, and the upper part of the transition plate is hinged to the lower part of the backrest frame. This allows for easier connection of the backrest frame.

[0015] Preferably, the base frame includes a base and a movable part. The base has longitudinally arranged slide rails on its left and right sides, and the movable part slides relative to the slide rails. The movable part is driven by a horizontal motor, and the height adjustment component is disposed on the movable part. The movable part can drive the upper part of the seat to slide back and forth on the base, facilitating changes in the forward and backward position of the upper part of the seat.

[0016] Preferably, it also includes a lead screw, a gearbox, a transition worm gear, and a worm;

[0017] The two ends of the lead screw are rotatably engaged with the slide rail. The gearbox is provided with a through hole for the lead screw to pass through. The transition worm gear and the worm are rotatably arranged inside the gearbox. The transition worm gear and the worm mesh with each other. The transition worm gear is provided with a threaded hole in the axial direction that is threaded to the lead screw. The worm is connected to the rotor of the horizontal motor.

[0018] A horizontal motor drives a worm gear to rotate, which in turn drives a transition worm wheel to rotate, thus changing the direction of power by 90 degrees. The transition worm wheel is engaged with a gearbox, so when the transition worm wheel rotates, it will rotate relative to the lead screw, thereby driving the gearbox to move axially relative to the lead screw, which in turn drives the moving part to slide on the slide rail. This solution adopts a worm gear structure, which has a self-locking effect, enabling more stable transmission and more stable parking.

[0019] Preferably, the horizontal motor is a horizontally arranged dual-output shaft motor, with each end of the dual-output shaft motor providing sliding power to the slide rails on both sides. A single motor can simultaneously provide power to the slide rails on both sides.

[0020] Preferably, the slide rail is a grooved component, and the lead screw is located within the grooved component, with both ends of the lead screw engaging with the two ends of the grooved component. This design results in a more integrated structure; the slide rail provides support for the lead screw while protecting it and preventing interference with external structures.

[0021] The beneficial effects of this utility model are:

[0022] This solution significantly reduces the block value of the seat cushion by distributing the base frame and the seat back connecting plate in an inward and outward manner. At the same time, the lower part of the backrest frame is hinged to the rear part of the seat cushion frame, which further increases the swing angle of the backrest frame. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only 7 of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the base frame and seat cushion frame according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the base frame and height adjustment assembly according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the slide rail-related components according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the gearbox according to an embodiment of the present utility model;

[0029] Figure 6This is a top perspective view of the seat frame and height adjustment assembly according to an embodiment of the present utility model.

[0030] Figure 7 This is a bottom perspective view of the seat frame and height adjustment component according to an embodiment of the present utility model.

[0031] The components include: 1. Base frame; 11. Base plate; 12. Moving part; 13. Lead screw; 14. Gearbox; 15. Transition worm gear; 16. Worm; 17. Slide rail; 2. Seat cushion frame; 21. Seat back connecting plate; 211. Main board; 212. Transition plate; 22. Connecting rod; 3. Backrest frame; 4. Height adjustment assembly; 41. Self-locking motor; 42. Gear sector; 43. Swing rod; 44. Connecting rod; 45. Arc hole; 46. Limit pin; 47. Rotating shaft. Detailed Implementation

[0032] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0033] Example

[0034] like Figure 1 As shown, the low-block value rear zero-gravity seat frame includes a base frame 1, a seat cushion frame 2, and a backrest frame 3; combined with Figure 2 and Figure 5 As shown, the seat cushion frame 2 includes two sets of seat back connecting plates 21 fixed to each other by connecting rods 22. The two sets of seat back connecting plates 21 are distributed on the outside of the base frame 1, and the rear parts of the two sets of seat back connecting plates 21 are hinged to the base frame 1. A height adjustment component 4 is provided between the front part of the seat cushion frame 2 and the base frame 1. The height adjustment component 4 is used to drive the front end of the seat cushion frame 2 to swing upward. The lower part of the backrest frame 3 is hinged to the rear part of the seat cushion frame 2, specifically using an angle adjuster connection.

[0035] In this design, the lower end of the backrest frame 3 is connected to the rear section of the seat cushion frame 2. Therefore, on the one hand, the backrest frame 3 can be adjusted relative to the seat cushion frame 2 at an angle; on the other hand, by changing the swing of the front end of the seat cushion frame 2, the angle of the backrest frame 3 can be further adjusted while simultaneously adjusting the angle of the seat cushion frame 2. This allows for a large-angle adjustment of the backrest, enabling the user to achieve a comfortable, zero-gravity sitting posture.

[0036] This solution significantly reduces the vertical thickness space occupied by placing the seat back connecting plate 21 on the outside of the base frame 1, i.e., the base frame 1 and the seat back connecting plate 21 are distributed inside and outside. The overall height of the seat cushion frame 2 is reduced, effectively reducing the overall block value of the seat frame and significantly improving comfort.

[0037] The height adjustment assembly 4 includes a self-locking motor 41, a gear sector 42, a swing arm 43, and a connecting rod 44;

[0038] The self-locking motor 41 is mounted on the base frame 1. The output end of the self-locking motor 41 is equipped with a drive gear. The center of the gear sector 42 is hinged to the base frame 1 through a rotating shaft 47. The gear sector 42 meshes with the drive gear. The rotating shaft 47 is fixed with the swing rod 43. The two ends of the connecting rod 44 are respectively hinged to the end of the swing rod 43 and the front of the seat cushion frame 2.

[0039] The self-locking motor 41 and the drive gear can drive the gear sector 42 to swing, thereby realizing the swing of the swing arm 43. The swing arm 43 pushes the front end of the seat frame 2 to swing up and down through the connecting rod 44. The whole control process is very convenient and reliable.

[0040] The toothed sector 42 is coaxially provided with an arc-shaped hole 45, and the base frame 1 is provided with a limiting pin 46 passing through the arc-shaped hole 45. During the swinging process of the toothed sector 42, the limiting pin 46 moves within the arc-shaped hole 45. Through the cooperation of the arc-shaped hole 45 and the limiting pin 46, the stability of the swinging of the toothed sector 42 can be significantly improved, and the swinging angle of the toothed sector 42 can be limited.

[0041] The seat back connecting plate 21 includes a main plate 211 and a transition plate 212. The transition plate 212 is fixed to the rear of the main plate 211. The transition plate 212 extends upward, and its upper part is hinged to the lower part of the backrest frame 3. This allows for easier connection of the backrest frame 3.

[0042] Combination Figure 4 and Figure 5 As shown, the base frame 1 includes a base and a movable part 12. The base has longitudinally arranged slide rails 17 on its left and right sides, and the movable part 12 slides relative to the slide rails 17. The movable part 12 is driven by a horizontal motor, and the height adjustment component 4 is disposed on the movable part 12. The movable part can drive the upper part of the seat to slide back and forth on the base, facilitating changes in the front-back position of the upper part of the seat.

[0043] It also includes lead screw 13, gearbox 14, transition worm gear and worm;

[0044] The two ends of the lead screw 13 are rotatably engaged with the slide rail 17. The gearbox 14 is provided with a through hole for the lead screw 13 to pass through. The transition worm gear and the worm are rotatably arranged inside the gearbox 14. The transition worm gear and the worm mesh with each other. The transition worm gear is provided with a threaded hole in the axial direction that is threaded to the lead screw 13. The worm is connected to the rotor of the horizontal motor.

[0045] A horizontal motor drives a worm gear to rotate, which in turn drives a transition worm wheel to rotate, thus changing the direction of power by 90 degrees. The transition worm wheel is engaged with the gearbox 14. Therefore, when the transition worm wheel rotates, it will rotate relative to the lead screw 13, which in turn drives the gearbox 14 to move axially relative to the lead screw 13. This, in turn, drives the moving part 12 to slide on the slide rail 17. This design uses a worm gear structure, which has a self-locking effect, enabling more stable transmission and more stable parking.

[0046] Combination Figure 3 As shown, the horizontal motor is a horizontally arranged dual-output shaft motor, with each end of the dual-output shaft motor providing sliding power to the slide rails 17 on both sides. A single motor can simultaneously provide power to the slide rails 17 on both sides.

[0047] The slide rail 17 is a groove-shaped component, and the lead screw 13 is located inside the groove-shaped component. The two ends of the lead screw 13 respectively mate with the two ends of the groove-shaped component. The structure is more integrated. While providing support for the lead screw 13, the slide rail 17 can also protect the lead screw 13 and prevent it from interfering with external structures.

[0048] In this design, the backrest frame 3 can be adjusted relative to the seat cushion frame 2 by 65° backward and 18° forward, with an electric angle adjustment structure at the hinge. The front end of the seat cushion frame 2 can be raised by 6.6°, which in turn causes the backrest frame 3 to swing backward by 6.6°. Through the coordinated action of the base frame 1, seat cushion frame 2, and backrest frame 3, a zero-gravity function is achieved.

[0049] The movable part 12 can move forward 137.5 mm relative to the base.

[0050] The self-locking motor 41 used in this embodiment is existing technology, which includes a motor and a worm gear structure. The motor outputs to the outside through the worm gear structure, which can prevent the driven structure from driving the motor to rotate when the motor is not rotating, and can stop at any time.

[0051] The beneficial effects of this utility model are:

[0052] This solution significantly reduces the block value of the seat cushion by arranging the base frame 1 and the seat back connecting plate 21 in an inner and outer distribution. At the same time, the lower part of the backrest frame 3 is hinged to the rear part of the seat cushion frame 2, which further increases the swing angle of the backrest frame 3.

[0053] This embodiment achieves a block value of less than 165mm through a simplified assembly structure, which is far smaller than the block value (195-245mm) of existing zero-gravity seat frames on the market. This greatly increases the lower space of the seat frame and provides a significant advantage to the overall vehicle body layout.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A low-block value rear zero-gravity seat frame, characterized in that, It includes a base frame (1), a seat cushion frame (2), and a backrest frame (3); The seat frame (2) includes two sets of seat back connecting plates (21) fixed to each other by connecting rods (22). The two sets of seat back connecting plates (21) are distributed on the outside of the base frame (1), and the rear of the two sets of seat back connecting plates (21) are hinged to the base frame (1). A height adjustment component (4) is provided between the front part of the seat frame (2) and the base frame (1), and the height adjustment component (4) is used to drive the front end of the seat frame (2) to swing upward. The lower part of the backrest frame (3) is hinged to the rear part of the seat cushion frame (2).

2. The low-block value rear zero-gravity seat frame according to claim 1, characterized in that: The height adjustment assembly (4) includes a self-locking motor (41), a gear sector (42), a rocker arm (43), and a connecting rod (44); The self-locking motor (41) is mounted on the base frame (1). The output end of the self-locking motor (41) is equipped with a drive gear. The center of the gear sector (42) is hinged to the base frame (1) through a rotating shaft (47). The gear sector (42) meshes with the drive gear. The rotating shaft (47) is fixed with the swing rod (43). The two ends of the connecting rod (44) are respectively hinged to the end of the swing rod (43) and the front of the seat cushion frame (2).

3. The low-block value rear zero-gravity seat frame according to claim 2, characterized in that: The toothed sector (42) is coaxially provided with an arc-shaped hole (45), and the base frame (1) is provided with a limiting pin (46) passing through the arc-shaped hole (45). During the swinging process of the toothed sector (42), the limiting pin (46) moves within the arc-shaped hole (45).

4. The low-block value rear zero-gravity seat frame according to claim 1, characterized in that: The seat back connecting plate (21) includes a main plate (211) and a transition plate (212). The transition plate (212) is fixed to the rear of the main plate (211). The transition plate (212) extends upward and the upper part of the transition plate (212) is hinged to the lower part of the backrest frame (3).

5. The low-block value rear zero-gravity seat frame according to claim 1, characterized in that: The base frame (1) includes a base and a movable part (12). The base is provided with slide rails (17) on the left and right sides respectively. The movable part (12) slides relative to the slide rails (17). The movable part (12) is driven by a horizontal motor. The height adjustment component (4) is provided on the movable part (12).

6. The low-block value rear zero-gravity seat frame according to claim 5, characterized in that: It also includes a lead screw (13), a gearbox (14), a transition worm gear, and a worm; The two ends of the lead screw (13) are rotatably engaged with the slide rail (17). The gearbox (14) is provided with a through hole for the lead screw (13) to pass through. The transition worm wheel and the worm are rotatably arranged inside the gearbox (14). The transition worm wheel and the worm mesh with each other. The transition worm wheel is axially provided with a threaded hole that is threaded to the lead screw (13). The worm is connected to the rotor of the horizontal motor.

7. The low-block value rear zero-gravity seat frame according to claim 6, characterized in that: The horizontal motor is a horizontally arranged dual-output shaft motor, and the two ends of the dual-output shaft motor provide sliding power to the slide rails (17) on both sides.

8. The low-block value rear zero-gravity seat frame according to claim 7, characterized in that: The slide rail (17) is a groove-shaped component, and the lead screw (13) is located inside the groove-shaped component. The two ends of the lead screw (13) are respectively engaged with the two ends of the groove-shaped component.

Images