Seat frame inclination angle adjusting mechanism of zero-gravity seat

Abstract

The utility model discloses a zero-gravity seat frame inclination angle adjusting mechanism which comprises an upper sliding rail and a seat frame arranged above the upper sliding rail, a front support protruding upwards is arranged at the front end of the upper sliding rail, a rear support protruding upwards is arranged at the rear end of the upper sliding rail, the front end of the seat frame is supported on the front support in a rotating mode, and a driving assembly is arranged between the rear end of the seat frame and the rear support. The driving assembly is used for driving the seat frame front end to rotate relative to the front support so that the seat frame rear end can be lifted up and down. The zero-gravity seat has the advantages that the zero-gravity mode of the seat is switched in the mode that the rear end of the seat frame sinks, compared with a traditional mode that the zero-gravity mode of the seat is achieved by adjusting the elevation angle of the front end of the seat frame, the lifting amplitude of the front end of the whole seat frame is smaller, and therefore it is guaranteed that the legs and the feet of a passenger have sufficient activity space; and the overall riding comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats, and particularly relates to an inclination angle adjusting mechanism for a zero-gravity seat frame. Background Art

[0002] With the improvement of people's living standards, people increasingly focus on enjoying life. Seats with zero-gravity mode function are one of the products that bring people the enjoyment of life, namely: zero-gravity vehicle seats.

[0003] The forms for vehicle seats to achieve zero-gravity attitude adjustment are all realized by lifting the front end of the seat frame, then extending the leg rest forward, and rotating the seat back backward. In the prior art, the working principle of lifting the zero-gravity mode seat frame is that the rear end of the seat frame is rotatably installed, and a driving structure is arranged at the front end to jack up the front end of the seat frame. By adopting such an adjustment method, the legs of the occupant will be lifted. However, for some small and medium-sized vehicles, especially for the front-row occupants, due to the small space layout in the vehicle, when the vehicle seat is in the zero-gravity mode, the movable space for the legs and feet of the occupant becomes very cramped. Summary of the Utility Model

[0004] In view of this, the utility model provides an inclination angle adjusting mechanism for a zero-gravity seat frame, aiming to meet the zero-gravity adjustment requirement by reducing the height of the rear end of the seat frame, so as to solve the problem of limited movable space caused by the lifting of the occupant's legs.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An inclination angle adjusting mechanism for a zero-gravity seat frame includes an upper slide rail and a seat frame arranged above the upper slide rail. It is characterized in that: the front end of the upper slide rail has a front bracket protruding upward, and the rear end has a rear bracket protruding upward. The front end of the seat frame is rotatably supported on the front bracket, and a driving component is arranged between the rear end and the rear bracket. The driving component is used to drive the front end of the seat frame to rotate relative to the front bracket, so that the rear end of the seat frame moves up and down.

[0007] By adopting the above structure, the seat frame is elevated and installed through the brackets, and with the front end as the rotation fulcrum, releasing the height of the rear end can achieve the purpose of adjusting the seat frame, so as to achieve the purpose of only adjusting the height change of the rear end of the seat frame without the front end being additionally elevated, ensuring that the legs and feet of the occupant have sufficient movable space while meeting the zero-gravity mode conversion of the seat.

[0008] Preferably: the driving component includes a motor, a gear and an arc-shaped toothed plate that mesh with each other. One end of the arc-shaped toothed plate is rotatably connected to the rear end of the seat frame, and the other end is rotatably supported on the rear bracket. The gear is driven by the motor to rotate. By adopting the above structure, the height adjustment of the rear end of the seat frame can be realized.

[0009] Preferably, a strip-shaped hole extending along the length direction of the upper slide rail is provided on the front bracket, and a support pin is installed at the front end of the seat frame. The support pin is rotatably and slidably sleeved in the strip-shaped hole. With the above structure, when the height of the rear end of the seat frame is adjusted, the support pin moves back and forth in the strip-shaped hole under the constraint of the strip-shaped hole, so that the front end of the seat frame makes a forward and backward sliding movement, further avoiding the lifting of the front end of the seat frame and ensuring that the occupant's legs and feet have sufficient activity space.

[0010] Preferably, a rotating shaft extends outward from the rear end of the seat frame, and the arc-shaped toothed plate has a first mounting hole. The rotating shaft is inserted into the first mounting hole. With the above structure, when the motor operates, it can force the arc-shaped toothed plate to rotate around the seat frame, thus avoiding movement interference.

[0011] Preferably, the motor is arranged inside the seat frame, the gear is fixedly arranged on the output shaft of the motor and protrudes outwardly toward the outside of the seat frame. A first meshing portion is provided at the front end of the arc-shaped toothed plate, and the gear meshes and drives with the first meshing portion. With the above structure, the overall structure can be made more compact, and at the same time, the power source for adjusting the rear end of the seat frame is ensured.

[0012] Preferably, a thickening plate is provided on the side of the arc-shaped toothed plate, and a second meshing portion consistent with the tooth profile of the first meshing portion is provided on the thickening plate. Both the second meshing portion and the first meshing portion mesh and drive with the gear. With the above structure, more stable power transmission between the motor and the arc-shaped toothed plate can be ensured.

[0013] Preferably, the arc-shaped toothed plate is a fan-shaped plate structure. The first meshing portion is arranged at the arc edge of the fan-shaped plate, the first mounting hole is arranged at the center position corresponding to the fan-shaped plate, and a weight-reducing hole is provided between the first mounting hole and the first meshing portion. With the above structure, the stability of the arc-shaped toothed plate structure can be ensured while reducing the overall weight, thereby reducing the transmission load.

[0014] Preferably, an extension portion extends forward from the bottom of the first meshing portion, and a second mounting hole is provided at the end of the extension portion. A pin shaft is inserted between the second mounting hole and the rear bracket. With the above structure, it is convenient for the arc-shaped toothed plate to rotate around the rear bracket.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. By using the zero-gravity seat frame inclination angle adjustment mechanism provided by the present utility model, the seat frame is elevated and installed through the bracket, and with the front end as the rotation fulcrum, releasing the height of the rear end can achieve the purpose of adjusting the seat frame, and further achieve the purpose of changing the sitting posture of the occupant, and the legs of the occupant are not deliberately elevated, ensuring that the occupant's legs and feet have sufficient activity space.

[0017] 2. Through the provided strip-shaped holes, when the rear end of the seat frame is adjusted in height, the support pin can move back and forth within the strip-shaped holes, thereby causing the front end of the seat frame to exhibit a forward and backward sliding movement, further preventing the legs of the occupant from being lifted, and thus ensuring that the occupant has sufficient leg and foot space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram (front view perspective) of the seat frame inclination adjustment mechanism of a zero-gravity seat;

[0019] Figure 2 It is a schematic structural diagram (rear view perspective) of the seat frame inclination adjustment mechanism of a zero-gravity seat;

[0020] Figure 3 It is a schematic structural diagram of the arc-shaped tooth plate 7;

[0021] Figure 4 It is a schematic structural diagram of the thickened plate 10. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the embodiments and the drawings.

[0023] As Figure 1 and Figure 2 shown, a seat frame inclination adjustment mechanism of a zero-gravity seat includes an upper slide rail 1 and a seat frame 2 installed on the top of the upper slide rail 1. A front bracket 3 is fixedly installed at the front end of the upper slide rail 1 by bolts, and a rear bracket 4 is fixedly installed at the rear end by bolts. The front end of the seat frame 2 is rotatably supported on the front bracket 3, and a driving assembly is installed between the rear end and the rear bracket 4. The driving assembly is used to drive the front end of the seat frame 2 to rotate relative to the front bracket 3 so that the rear end of the seat frame 2 performs a lifting movement up and down.

[0024] With such a design, the entire seat frame 2 is lifted and installed through the front bracket 3 and the rear bracket 4, and the entire seat frame 2 can use the front end as a rotation fulcrum. By releasing the height of the rear end, the purpose of adjusting the seat frame 2 can be achieved, and thus the sitting posture of the occupant can be changed. Compared with the traditional adjustment mechanism that uses the rear end of the seat frame 2 as a rotation fulcrum, the lifting amplitude of the front end of the seat frame 2 is lower, and thus it is ensured that the occupant has sufficient leg and foot space for activities.

[0025] As Figure 1 and Figure 2 shown, in this embodiment, the driving assembly includes a motor 5 and a gear 6 and an arc-shaped tooth plate 7 that are meshed with each other. One end of the arc-shaped tooth plate 7 is rotatably connected to the rear end of the seat frame 2, and the other end is rotatably supported on the rear bracket 4, and the gear 6 is driven by the motor 5.

[0026] Specifically, as Figure 1 and Figure 3As shown, a rotating shaft 2a extends outward from the rear end of the seat frame 2. A first mounting hole 7a is formed on the arc-shaped toothed plate 7, and the rotating shaft 2a is inserted inside the first mounting hole 7a. With this design, it ensures the movable installation between the seat frame 2 and the arc-shaped toothed plate 7. When the motor 5 operates, it can make the arc-shaped toothed plate 7 rotate relatively, thereby preventing movement interference between the seat frame 2 and the arc-shaped toothed plate 7. At the same time, the rotating shaft 2a also facilitates the positioning and installation of the arc-shaped toothed plate 7.

[0027] In this embodiment, the motor 5 is fixedly installed inside the seat frame 2 by nuts. The gear 6 is fixedly installed on the output shaft of the motor 5 and protrudes outward from the seat frame 2. A first meshing portion 7b is formed at the front end of the arc-shaped toothed plate 7. The gear 6 and the first meshing portion 3b are in meshing transmission. With this design, the overall structure can be made more compact, and at the same time, the rotational power of the arc-shaped toothed plate 7 is ensured, thereby ensuring the height adjustment of the rear end of the seat frame 2.

[0028] As Figure 4 shown, a thickening plate 10 is also fixedly installed on the side of the arc-shaped toothed plate 7. A second meshing portion 10a consistent with the tooth profile of the first meshing portion 7b is formed on one side of the thickening plate 10, and both the second meshing portion 10a and the first meshing portion 7b are in meshing transmission with the gear 6. Through the design of the thickening plate 10, the structural strength of the arc-shaped toothed plate 7 is increased, and at the same time, the power transmission between the motor 5 and the arc-shaped toothed plate 7 is made more stable.

[0029] In this embodiment, the arc-shaped toothed plate 7 is a fan-shaped plate structure. The first meshing portion 7b is formed on the arc edge of the fan-shaped plate, and the first mounting hole 7a is formed at the center position corresponding to the fan-shaped plate. As Figure 3 shown, a weight-reducing hole 7c is also provided between the first mounting hole 7a and the first meshing portion 7b. With this design, while ensuring the overall structural strength of the arc-shaped toothed plate 7, it can also reduce the overall weight increased due to the addition of the thickening plate 10.

[0030] Furthermore, an extension portion 7d extends forward at the bottom of the first meshing portion 7b. A second mounting hole 7e is formed at the end of the extension portion 7d. A pin shaft 11 is inserted between the second mounting hole 7e and the rear support 4, so as to ensure that the arc-shaped toothed plate 7 can rotate around the rear support 4.

[0031] As Figure 1As shown in the figure, a strip-shaped hole 8 extends along the length direction of the upper slide rail 1 on the front support 3. A support pin 9 is installed at the front end of the strip seat frame 2. The support pin 9 is rotatably and slidably sleeved in the strip-shaped hole 8. With such a design, when the height of the rear end of the seat frame 2 is adjusted, due to the restraint of the rear strip-shaped hole 8, the support pin 9 can move back and forth in the strip-shaped hole 8, so that the front end of the seat frame 2 assumes a posture of front-back sliding movement, further ensuring that when the seat is switched to the zero-gravity mode, the legs of the occupant will not be excessively lifted, thus ensuring that the occupant has sufficient space for the legs and feet to move.

[0032] In this embodiment, the gear 6, the rotating shaft 2a and the support pin 9 are on the same horizontal line. With such a design, the overall force and transmission of the seat frame 2 can be made more stable.

[0033] Combined with Figure 1 , the working principle of the seat frame inclination adjustment mechanism of the zero-gravity seat is as follows:

[0034] When the seat is in the normal state, the support pin 9 is located at the frontmost end of the strip-shaped hole 8, and the gear 6 is located at the middle position of the first meshing part 7b. When the seat is switched to the zero-gravity mode, the motor 5 operates, and the gear 6 rotates clockwise. Since the motor 5 is fixedly installed, it forces the arc-shaped tooth plate 7 to rotate counterclockwise around the rotation point on the rear support 4, causing the rear end of the seat frame 2 to deflect downward, thereby changing the sitting posture of the occupant. At the same time, the support pin 9 moves leftward along the strip-shaped hole 8, and the front end of the seat frame 2 as a whole presents a state of backward sliding. When the seat is switched from the zero-gravity mode to the normal state, only need to reverse the motor 5, that is, the gear 6 rotates counterclockwise.

[0035] With such a design, by means of the sinking of the rear end of the seat frame 2, the switching of the zero-gravity mode of the seat is realized. Coupled with the strip-shaped hole 8 provided at the front end, compared with the traditional way of realizing the zero-gravity mode of the seat by adjusting the elevation angle of the front end of the seat frame 2, the lifting amplitude of the entire front end of the seat frame 2 is smaller, thus ensuring that the occupant has sufficient space for the legs and feet to move and improving the overall riding comfort.

[0036] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Those of ordinary skill in the art, under the inspiration of the present invention, without departing from the purpose and claims of the present invention, can make various similar representations, and such transformations all fall within the protection scope of the present invention.

Claims

1. A zero-gravity seat frame inclination adjustment mechanism, comprising an upper slide rail (1) and a seat frame (2) arranged above the upper slide rail (1), characterized in that: The front end of the upper slide rail (1) has a front bracket (3) protruding upward, and the rear end has a rear bracket (4) protruding upward. The front end of the seat frame (2) is rotatably supported on the front bracket (3), and a driving assembly is provided between the rear end and the rear bracket (4). The driving assembly is used to drive the front end of the seat frame (2) to rotate relative to the front bracket (3) so that the rear end of the seat frame (2) moves up and down.

2. The zero-gravity seat frame inclination angle adjustment mechanism according to claim 1, characterized in that: The driving assembly includes a motor (5), and a gear (6) and an arc-shaped toothed plate (7) that mesh with each other. One end of the arc-shaped toothed plate (7) is rotatably connected to the rear end of the seat frame (2), and the other end is rotatably supported on the rear bracket (4). The gear (6) is driven to rotate by the motor (5).

3. The zero-gravity seat frame tilt angle adjustment mechanism according to claim 2, characterized in that: A strip-shaped hole (8) extending along the length direction of the upper slide rail (1) is provided on the front bracket (3). A support pin (9) is installed at the front end of the seat frame (2), and the support pin (9) is rotatably and slidably sleeved in the strip-shaped hole (8).

4. The zero-gravity seat frame inclination angle adjustment mechanism according to claim 2, characterized in that: A rotating shaft (2a) extends outward from the rear end of the seat frame (2). The arc-shaped toothed plate (7) has a first mounting hole (7a), and the rotating shaft (2a) passes through the first mounting hole (7a).

5. The zero-gravity seat frame tilt angle adjustment mechanism according to claim 4, characterized in that: The motor (5) is arranged inside the seat frame (2). The gear (6) is fixedly arranged on the output shaft of the motor (5) and protrudes outward from the seat frame (2). A first meshing portion (7b) is provided at the front end of the arc-shaped toothed plate (7), and the gear (6) meshes and drives with the first meshing portion (7b).

6. The zero-gravity seat frame inclination angle adjustment mechanism according to claim 5, characterized in that: A thickening plate (10) is provided on the side of the arc-shaped toothed plate (7). The thickening plate (10) is provided with a second meshing portion (10a) that is consistent with the tooth profile of the first meshing portion (7b). Both the second meshing portion (10a) and the first meshing portion (7b) mesh and drive with the gear (6).

7. The zero-gravity seat frame inclination angle adjustment mechanism according to claim 5, characterized in that: The arc-shaped toothed plate (7) is of a fan-shaped plate structure. The first meshing portion (7b) is arranged on the arc edge of the fan-shaped plate, the first mounting hole (7a) is arranged at the center position corresponding to the fan-shaped plate, and a weight-reducing hole (7c) is provided between the first mounting hole (7a) and the first meshing portion (7b).

8. The zero-gravity seat frame inclination angle adjusting mechanism according to claim 7, characterized in that: An extension portion (7d) extends forward from the bottom of the first meshing portion (7b). A second mounting hole (7e) is provided at the end of the extension portion (7d), and a pin shaft (11) is passed through between the second mounting hole (7e) and the rear bracket (4).

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