Seat depth mechanism applied to three-row zero-gravity seat without slide rail

Abstract

The utility model relates to a seat depth mechanism applied to three-row non-sliding rail zero-gravity seat, including: the non-sliding rail seat in three-row position is provided with seat depth mechanism for adjusting the length before and after the cushion, and the seat depth mechanism includes: the thigh support assembly of sliding connection on the cushion framework, the screw rod motor of installation on the seat framework, the thigh support assembly includes: the thigh support board, two groups of strip -shaped guide holes of setting up on the thigh support board and setting along seat depth before and after adjustment direction, the strip -shaped guide hole is installed with the guide bolt, and the guide bolt is through the strip -shaped guide hole of thigh support board and is fixedly connected on the seat framework, and the screw rod motor is installed on the seat framework through the motor base, and the screw rod motor is fixedly connected with the thigh support board and pushes the thigh support board and slides before and after, the utility model's advantage is: installs seat depth mechanism on three-row non-sliding rail seat, uses the thigh support board to connect the cushion, and the motor control is prolonged forward, and the thigh is supported to a greater extent, and the passenger comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a seat depth mechanism for a three-row railless zero-gravity seat. Background Technology

[0002] Currently, most three-row railless zero-gravity seats lack a seat depth adjustment mechanism, which makes them unable to adapt to the leg support needs of users of different heights, seriously affecting the three-row seating experience. There is an urgent need for a seat depth mechanism that can be applied to three-row railless zero-gravity seats. Utility Model Content

[0003] In view of the above problems, the purpose of this utility model is to provide a seat depth mechanism for a three-row railless zero-gravity seat, so as to provide seat depth adjustment for the three-row railless zero-gravity seat and overcome the shortcomings of the prior art.

[0004] This utility model provides a seat depth mechanism for a three-row railless zero-gravity seat, comprising: a railless seat located in the third row, and a seat depth mechanism for adjusting the front-to-back length of the seat cushion on the third row seat. The seat depth mechanism includes: a thigh support assembly slidably connected to the seat cushion frame, and a screw motor mounted on the seat frame and driving the thigh support assembly. The thigh support assembly includes: a thigh support plate, and two sets of strip-shaped guide holes formed on the thigh support plate and arranged along the front-to-back seat depth adjustment direction. Guide bolts are installed in the strip-shaped guide holes. The guide bolts pass through the strip-shaped guide holes of the thigh support plate and are fixed to the seat frame. The guide bolts are used to limit the Z-axis and Y-axis displacement of the thigh support plate. The thigh support plate slides along the X-axis on the guide bolts through the strip-shaped guide holes. The screw motor is mounted on the seat frame through a motor mount and located near the thigh support plate. The screw motor is fixed to the thigh support plate and pushes the thigh support plate to slide back and forth relative to the seat cushion.

[0005] As a preferred embodiment of this utility model, two sets of four strip-shaped guide holes are symmetrically arranged on the thigh support plate. The length direction of the strip-shaped guide holes is the sliding direction of the thigh support plate, and the length of the strip-shaped guide holes is the front-to-back sliding distance of the thigh support plate.

[0006] The beneficial effects of this utility model are as follows:

[0007] 1. This utility model installs a seat depth mechanism on three rows of rail-free seats, uses a thigh support plate connected to the seat cushion, and extends forward through motor control to support the thighs to a greater extent and improve passenger comfort.

[0008] 2. This utility model has a simple structure, low cost, high stability, and can meet various travel needs of users. Attached Figure Description

[0009] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0010] Figure 2 This is a top view of the overall structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the installation of the thigh support plate and guide bolts of this utility model.

[0012] Figure 4 This is a side view of the overall structure of this utility model.

[0013] Figure 5 This is a bottom view of the overall structure of this utility model.

[0014] Attached reference numerals: 1. Lead screw motor; 2. Thigh support plate; 3. Strip guide hole; 4. Guide bolt. Detailed Implementation

[0015] See Figure 1-5 As shown in the figure, this embodiment provides a seat depth mechanism for a three-row railless zero-gravity seat, including: a railless seat located in the third row, and a seat depth mechanism for adjusting the front-to-back length of the seat cushion on the third row of seats. The seat depth mechanism includes: a thigh support assembly slidably connected to the seat cushion frame, and a lead screw motor 1 mounted on the seat frame and driving the thigh support assembly. The thigh support assembly includes: a thigh support plate 2, and two sets of four strip-shaped guide holes 3 formed on the thigh support plate 2 and arranged along the front-to-back seat depth adjustment direction. Guide bolts 4 are installed in the strip-shaped guide holes 3 and are fixed to the seat frame through the strip-shaped guide holes 3 of the thigh support plate 2. The guide bolts 4 are used to limit the Z-axis and Y-axis displacement of the thigh support plate 2. The thigh support plate 2 slides along the X-direction on the guide bolt 4 through the strip-shaped guide hole 3. The lead screw motor 1 is mounted on the seat frame through the motor mount and is located near the thigh support plate 2. The lead screw motor adopts two driving forms. In the first form, the lead screw of the lead screw motor is fixed to the seat frame, and the main body of the lead screw motor moves back and forth on the lead screw. During the movement, it drives the thigh support plate 2, which is fixed to the main body of the lead screw motor, to move back and forth. In the second form, the main body of the lead screw motor is fixed to the seat frame, and a nut is fixed to the thigh support plate 2. The nut is fitted on the lead screw of the lead screw motor, and the lead screw motor drives the nut to move back and forth on the lead screw, which indirectly drives the thigh support plate 2, which is fixed to the nut, to move back and forth relative to the lead screw.

[0016] Furthermore, two sets of four strip-shaped guide holes 3 are symmetrically arranged on the thigh support plate 2. The length direction of the strip-shaped guide holes 3 is the sliding direction of the thigh support plate 2, and the length of the strip-shaped guide holes 3 is the front and back sliding distance of the thigh support plate 2.

[0017] In this embodiment, the Z-direction is the height direction of the vehicle, the Y-direction is the width direction of the vehicle, and the X-direction is the length direction of the vehicle.

[0018] Working principle: The four strip-shaped guide holes 3 on the thigh support plate 2 serve as guide rails, the guide bolts 4 serve as guide rods, and the screw motor 1 pushes the thigh support plate 2 to slide back and forth along the guide rails, thereby realizing the adjustment of the seat depth of the cushion.

[0019] 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 depth mechanism for a three-row railless zero-gravity seat, comprising: A railless seat located in the third row is characterized by a seat depth mechanism for adjusting the fore-and-aft length of the seat cushion. The seat depth mechanism includes: a thigh support assembly slidably connected to the seat cushion frame; and a lead screw motor mounted on the seat frame and driving the thigh support assembly. The thigh support assembly includes: a thigh support plate; and two sets of strip-shaped guide holes formed on the thigh support plate and arranged along the fore-and-aft adjustment direction of the seat depth. Guide bolts are installed in the strip-shaped guide holes and are fixed to the seat frame through the strip-shaped guide holes in the thigh support plate. The guide bolts limit the Z-axis and Y-axis displacement of the thigh support plate. The thigh support plate slides along the X-axis on the guide bolts through the strip-shaped guide holes. The lead screw motor is mounted on the seat frame via a motor mount and located near the thigh support plate. The lead screw motor is fixed to the thigh support plate and pushes the thigh support plate to slide back and forth relative to the seat cushion.

2. The seat depth mechanism for a three-row railless zero-gravity seat according to claim 1, characterized in that, Two sets of four strip-shaped guide holes are symmetrically arranged on the thigh support plate. The length direction of the strip-shaped guide holes is the sliding direction of the thigh support plate, and the length of the strip-shaped guide holes is the front and back sliding distance of the thigh support plate.

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