CN-117377588-B - Vehicle seat

CN117377588BCN 117377588 BCN117377588 BCN 117377588BCN-117377588-B

Abstract

The present disclosure proposes a vehicle seat including a back adjuster mounted so as to adjust an inclination angle of a back frame with respect to a seat cushion frame, a first walk-in lever mounted so as to be rotated from an initial position to an operation position by a walk-in operation force to release the back adjuster, a fold lever mounted so as to be rotated when rotated by a fold operation force and thus release the back adjuster, a second walk-in lever rotatably mounted on a seat cushion frame so that the second walk-in lever is rotated by the back frame being inclined inward by releasing the back adjuster and thus unlocking a seat rail in a locked state and limiting inward inclination of the back frame, and a synchronous operation mechanism provided so that the second walk-in lever is rotated in synchronization with the fold lever so as not to limit inward inclination of the back frame when the fold lever is rotated to release the back adjuster.

Inventors

LI TINGBIN
JIANG HAOCHENG
Bu Quanhe
LIN CHENGYI
Jin Dongjuan

Assignees

现代坦迪斯株式会社

Dates

Publication Date: 20260505
Application Date: 20220718
Priority Date: 20210719

Claims (13)

1. A vehicle seat, comprising: a back adjuster installed so as to adjust an inclination angle of the back frame with respect to the seat cushion frame; A first walk-in lever installed such that the backrest adjuster is released by rotating from an initial position to an operation position by a walk-in operation force; A folding lever installed such that, when rotated by a folding operation force, the first walk-in lever is rotated and thus the backrest adjuster is released; A second walk-in lever rotatably mounted on the seat cushion frame such that the second walk-in lever is rotated by the back frame inclined inward by releasing the back adjuster, and thus unlocks the seat rail in a locked state and restricts the inward inclination of the back frame, and And a synchronization operating mechanism provided so that the second walk-in lever is rotated in synchronization with the folding lever so that the second walk-in lever does not restrict inward tilting of the back frame when the folding lever is rotated to release the back adjustor.
2. The vehicle seat of claim 1, wherein the first walk-in lever is coupled to the input shaft of the back adjuster in such a manner that rotation of the first walk-in lever is limited, The folding bar is rotatably mounted on the input shaft such that the folding bar is concentric with the first step-in bar, and A drive release protrusion is provided on the folding bar in such a manner as to protrude from the folding bar toward the first walk-in bar such that the drive release protrusion can be rotated by a folding operation force, thereby rotating the first walk-in bar.
3. The vehicle seat according to claim 2, wherein a drive release protrusion is provided on the first walk-in lever in such a manner as to protrude from the first walk-in lever toward the folding lever to stably receive the rotational displacement transmitted by the drive release protrusion.
4. The vehicle seat according to claim 2, wherein a walk-in protrusion is provided on the second walk-in lever in such a manner as to protrude from the second walk-in lever toward a radial direction from a rotation center of the second walk-in lever, such that the walk-in protrusion is hooked on a fold-restricting protrusion on the back frame that is inclined inward by releasing the back adjuster, and A walk-in cable is connected to the second walk-in lever, the walk-in cable being used to unlock the seat rail in the locked state when pulled.
5. The vehicle seat of claim 4, wherein the second walk-in bar is mounted below the first walk-in bar, and The walk-in protrusion protrudes upward from a rotation center of the second walk-in lever.
6. The vehicle seat according to claim 4, wherein the synchro-operation mechanism is configured as a link member, both end portions of which are connected to the folding bar and the second step-in bar in a rotatable state, respectively.
7. The vehicle seat according to claim 6, wherein one end of the link member is connected to one side of the folding lever opposite to the other side provided with the drive release protrusion, a rotation center of the folding lever is located between both sides of the folding lever, and The other end of the link member is connected to one side of the second walk-in lever opposite to the other side of the second walk-in lever to which the walk-in cable is connected, and the rotation center of the second walk-in lever is located between both sides of the second walk-in lever.
8. The vehicle seat of claim 1, wherein the second walk-in bar comprises: a synchronous operation lever connected to the folding lever through the synchronous operation mechanism, and An operating lever installed in a concentric manner with the synchronous operating lever and relatively rotatable within a predetermined range, and performs a function of unlocking a seat rail in the locked state and restricting inward tilting of the back frame.
9. The vehicle seat according to claim 8, wherein a range in which the synchronization operation lever and the operation lever are rotatable relative to each other is set to be limited by an arc-shaped adjustment groove formed in each of the synchronization operation lever and the operation lever and an adjustment pin inserted into the arc-shaped adjustment groove.
10. The vehicle seat according to claim 9, wherein a support spring is installed between the synchronization operation lever and the operation lever, the support spring elastically supporting the synchronization operation lever and the operation lever in such a manner that a relative position of the synchronization operation lever and the operation lever is kept constant.
11. The vehicle seat according to claim 8, wherein a walk-in protrusion is provided on the operation lever so as to protrude from the operation lever in a radial direction from a rotation center of the operation lever, such that the walk-in protrusion is hooked on a fold-restricting protrusion on the back frame that is inclined inward by releasing the back adjuster, and A walk-in cable is connected at a location spaced from the walk-in protrusion, the walk-in cable for unlocking the seat rail in the locked state.
12. The vehicle seat according to claim 11, wherein the synchronization lever is connected to the folding lever by the synchronization operating mechanism on an opposite side of the walk-in cable to which the lever is connected with respect to a rotation center of the lever.
13. The vehicle seat according to claim 12, wherein the synchro-lever is configured as a link member that connects the folding lever and the synchro-lever such that, when the folding lever is rotated in a direction of releasing the back adjuster, the walk-in protrusion on the second walk-in lever is out of a rotation radius of the fold-restricting protrusion on the back frame, and such that the second walk-in lever is rotated in a direction opposite to a direction in which the walk-in cable is pulled.

Description

Vehicle seat Technical Field The present invention relates to a technology related to walk-in (walk-in) and folding functions of a vehicle seat. Background A front seat of a Recreational Vehicle (RV) or a three-door vehicle has a walk-in function so that an occupant who is to sit on or leave the rear seat gets in and out of the vehicle. The "walk-in" function of the vehicle seat refers to a function in which, in an initial state, when an occupant to be seated in or away from the vehicle rear seat operates a walk-in lever or a walk-in switch of the vehicle front seat, the seatback is tilted forward by a predetermined angle while the front seat is slid forward by a predetermined distance. When the walk-in function is performed, a space is left between the front seat and the rear seat so that an occupant who wants to sit on the rear seat enters and exits the vehicle at or away from the rear seat. The vehicle seat also has a folding function different from the walk-in function. The folding function refers to a function in which the seat back is tilted forward at a larger angle than the walk-in function. Typically, the seat back may be tilted forward to a position where it contacts the seat cushion. The forward tilting angle of the seat back is fixed by a back adjuster (recliner). The related art is KR10-2017-0056744A. The matters described as background of the invention are only intended to assist in understanding the background of the invention and are not intended to mean that the invention falls within the scope of the related art known to those of ordinary skill in the art. Disclosure of Invention Technical problem An object of the present invention is to provide a vehicle seat in which a folding function and a walk-in function can be performed even if components necessary for performing the folding function and the walk-in function of the seat are mounted on only one side of the vehicle seat. The vehicle seat can have a simple and compact construction, thereby reducing the number of parts and the weight thereof, and making it easier to construct a seat assembly including a plurality of seats. Technical proposal In order to achieve the above object, according to an aspect of the present invention, there is provided a vehicle seat including: a back adjuster installed so as to adjust an inclination angle of the back frame with respect to the seat cushion frame; A first walk-in lever installed so that the backrest adjuster is released by rotating from an initial position to an operation position by a walk-in operation force; a folding lever installed such that the first walk-in lever is rotated when rotated by a folding operation force, and thus the backrest adjuster is released; a second walk-in lever rotatably mounted on the cushion frame and mounted to be rotated by the back frame being inclined inward due to release of the back adjuster, and thus unlocking the seat rail in the locked state and restricting the inward inclination of the back frame, and And a synchronization operation mechanism (in-unison operating mechanism) configured to rotate the second walk-in lever in synchronization with the folding lever such that the second walk-in lever does not restrict inward tilting of the back frame when the folding lever is rotated to release the back adjustor. In the vehicle seat, the first walk-in lever may be coupled to the input shaft of the back adjuster in such a manner that rotation of the first walk-in lever is restricted, The folding bar may be rotatably mounted on the input shaft such that the folding bar is concentric with the first walk-in bar, and A drive release protrusion (driving-for-RELEASING PROTRUSION) may be provided on the folding bar in such a manner as to protrude from the folding bar toward the first step-in bar so that the drive release protrusion can be rotated by a folding operation force, thereby rotating the first step-in bar. In the vehicle seat, the drive release protrusion may be provided on the first walk-in lever in such a manner as to protrude from the first walk-in lever toward the folding lever to stably receive the rotational displacement transmitted by the drive release protrusion. In the vehicle seat, the walk-in protrusion may be provided on the second walk-in lever in such a manner as to protrude from the second walk-in lever in a radial direction from a rotation center of the second walk-in lever, so that the walk-in protrusion hooks (hook) on a fold-restricting protrusion on a back frame that is inclined inward by releasing the back adjuster, and A walk-in cable for unlocking the seat rail in a locked state when pulled, the walk-in cable being connectable to the second walk-in lever. In the vehicle seat, the second walk-in lever may be installed under the first walk-in lever, and The walk-in protrusion may protrude upward from the rotation center of the second walk-in lever. In the vehicle seat, the synchro-operation mechanism may be configured as a link member whose