Vehicle seat with convertible seating direction

Abstract

The present invention provides a vehicle seat capable of changing a seating direction, comprising: a seat cushion mounted on a seat rail and sliding in a front-back direction; an upper seat back rotatably coupled to the seat cushion and including an opening portion; and a lower seat back located inside the opening portion and rotatably coupled to the seat cushion so as to be unfolded to the rear of the seat cushion.

Description

Technical Field

[0001] The present invention relates to a vehicle seat with a convertible sitting direction, and more particularly to a vehicle seat with a convertible sitting direction which can realize two-way sitting by converting the angle of a seat back. Background Art

[0002] Generally, vehicle seats are equipped with various convenience devices to provide passengers with a comfortable riding feeling and convenience.

[0003] For example, the application includes a seat rail device that enables a vehicle seat to move forward and backward to adapt to the body shape of a passenger, a leg rest for supporting the legs of a passenger, and the like.

[0004] In recent years, as the research and development of autonomous vehicles has continued to deepen, the development of vehicle seats suitable for autonomous vehicles is also underway. As a seat structure that can be applied to autonomous vehicles, a seat structure that can realize multiple modes such as conversation mode between passengers and relaxation mode in addition to normal driving mode is being developed.

[0005] As an example of such a seat structure, a swivel mechanism structure for swivel seats can be applied, and a vehicle seat having such a swivel mechanism can be applied to the second row of a multi-purpose vehicle (MPV) or an autonomous driving vehicle, etc.

[0006] On the other hand, since conventional vehicle seats using a rotating mechanism have many manual operation specifications, there is the inconvenience that the passenger needs to pull the lever himself to rotate the seat.

[0007] In addition, the rotation radius of the seat may cause interference with other structures in the vehicle, which is also inconvenient, and in order to realize the rotation mechanism, a separate rod and locking system need to be configured, so the structure becomes complicated and the weight of the vehicle is increased.

[0008] Prior art literature

[0009] Patent Literature

[0010] Patent Document 1: Korean Patent No. 10-1826520 Summary of the invention

[0011] 1. Technical issues to be resolved

[0012] The object of the present invention is to provide a vehicle seat with convertible sitting direction, which can selectively realize two-way sitting by converting the angle of the split seat back according to different modes, so that the sitting position can be changed without rotating the entire seat, thereby preventing interference caused by the rotation radius of the seat in advance and realizing two-way sitting.

[0013] (II) Technical solution

[0014] The vehicle seat with convertible sitting direction according to the present invention is characterized in that it includes: a seat cushion, which is installed on a seat rail and slides in the front-rear direction; an upper seat back, which is rotatably coupled to the seat cushion and includes an opening portion; and a lower seat back, which is located inside the opening portion and is rotatably coupled to the seat cushion so as to be unfolded to the rear of the seat cushion.

[0015] Here, when the upper seat back is rotated to face the seat cushion, an inner side edge for forming the opening portion is exposed to a seating area.

[0016] Preferably, the seating area is formed to be inclined upward relative to the seat cushion.

[0017] More preferably, the upper seat back is adjusted in the following manner: when the upper seat back is adjacent to the seat cushion, the angle between the seat cushion and the inner edge is largest, and as the upper seat back rotates toward the initial position, the angle between the seat cushion and the inner edge gradually decreases.

[0018] On the other hand, when the upper seat back is rotated to face the seat cushion, the lower seat back is operated in conjunction with the upper seat back to be deployed to the rear of the seat cushion.

[0019] The lower seat back is capable of adjusting a rotation angle in a state where it is deployed to the rear of the seat cushion.

[0020] Additionally, the lower seat back rotates independently of the upper seat back to deploy rearward of the seat cushion.

[0021] (III) Beneficial effects

[0022] The present invention can selectively realize two-way riding by converting the angle of the split seat back according to different modes, so that the sitting position can be changed without rotating the entire seat, thereby preventing interference caused by the rotation radius of the seat in advance and realizing two-way riding.

[0023] Therefore, the present invention can eliminate multiple structures that need to be applied in order to realize the conventional rotating mechanism, and can realize two-way riding, thereby simplifying the structure and reducing the weight.

[0024] In addition, the present invention can also independently convert the angles of the split seat backs, thereby providing a leg rest function for the second row passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 1 is a diagram showing a driving mode of a vehicle seat having a convertible seating direction according to an embodiment of the present invention.

[0026] Figure 2 1 is a diagram showing a face-to-face mode of a vehicle seat having a convertible seating direction according to an embodiment of the present invention.

[0027] Figure 3 1 is a diagram showing a leg rest mode of a vehicle seat capable of switching a seating direction according to an embodiment of the present invention.

[0028] Figure 4 and Figure 5 1 is a diagram showing a rotation structure of an upper seat back of a vehicle seat capable of switching a seating direction according to an embodiment of the present invention.

[0029] Figure 6 and Figure 7 1 is a diagram showing a rotation structure of a lower seat back of a vehicle seat capable of switching a seating direction according to an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 100: Seat cushion

[0032] 110: Connecting guide

[0033] 120: Cover part

[0034] 200: Upper seat back

[0035] 200a: Headrest

[0036] 210: Inside edge

[0037] 220: Upper axis

[0038] 300: Lower seat back

[0039] 310: Lower shaft

[0040] A: Opening

[0041] M1, M2: drive motor DETAILED DESCRIPTION

[0042] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0043] Advantages and features of the present invention and methods for achieving the advantages and features will become more apparent through embodiments described in detail with reference to the accompanying drawings.

[0044] However, the present invention is not limited to the embodiments disclosed below, but can be implemented in different various forms. These embodiments are provided only to make the disclosure of the present invention more complete and to fully convey the scope of the present invention to ordinary technicians in the technical field to which the present invention belongs. The present invention is only defined by the scope of the claims.

[0045] In addition, when describing the present invention, if it is considered that the relevant well-known technology and the like may obscure the gist of the present invention, the detailed description thereof will be omitted.

[0046] Figure 1 is a diagram showing a driving mode of a vehicle seat with a convertible seating direction according to an embodiment of the present invention, Figure 2 1 is a diagram showing a face-to-face mode of a vehicle seat with a convertible seating direction according to an embodiment of the present invention, Figure 3 1 is a diagram showing a leg rest mode of a vehicle seat capable of switching a seating direction according to an embodiment of the present invention.

[0047] in addition, Figure 4 and Figure 5 1 is a diagram showing a rotation structure of an upper seat back of a vehicle seat capable of switching a seating direction according to an embodiment of the present invention, Figure 6 and Figure 7 1 is a diagram showing a rotation structure of a lower seat back of a vehicle seat capable of switching a seating direction according to an embodiment of the present invention.

[0048] like Figure 1 As shown, the vehicle seat with a convertible seating direction according to the present embodiment includes a seat cushion 100 , an upper seat back 200 , and a lower seat back 300 .

[0049] The seat cushion 100 is provided so that the lower body of a passenger can be positioned and seated thereon, and is configured to be mounted on a seat rail (not shown) and to slide in the front-rear direction.

[0050] The upper seat back 200 includes a headrest 200 a for supporting a head of a passenger, is rotatably coupled to the seat cushion 100 , and includes an opening portion A. As shown in FIG.

[0051] That is, one side and the other side of the upper seat back 200 are respectively connected to the pair of connecting guides 110, so that the upper seat back 200 is rotatably coupled to the seat cushion 100 (refer to Figure 4 ), and the upper seat back 200 has a “ㄷ”-shaped structure, so that an opening portion A is formed inside when connected to the connecting guide 110.

[0052] like Figure 2 As shown, when the upper seat back 200 is selectively rotated to a position facing the seat cushion 100 according to the operation of the passenger, the inner edge 210 for forming the opening portion A is exposed to the seating area.

[0053] In other words, the upper seat back 200 is a structure for supporting the upper body of the passenger, and in the normal driving mode, supports the upper body of the passenger through the front (refer to Figure 1 ), and in the set face-to-face mode, the upper body of the passenger sitting on the seat cushion 100 is supported by the placement area formed by the inner edge 210 (refer to Figure 2 ).

[0054] More specifically, the face-to-face mode is a mode in which the passenger's sitting direction is toward the rear seat, so that when in the face-to-face mode, the upper seat back 200 rotates in the direction of folding to the seat cushion 100, thereby supporting the upper body of the passenger sitting toward the rear seat through the inner edge 210.

[0055] Preferably, the seating area formed by the inner side edge 210 of the upper seat back 200 may be formed to be inclined upward with respect to the seat cushion 100 .

[0056] More preferably, when the upper seat back 200 is rotated in the direction of being folded onto the seat cushion 100 to achieve the face-to-face mode, the upper seat back 200 can be rotated to a range in which the angle between the inner edge 210 and the upper surface of the seat cushion 100 is greater than 90°, so that in the face-to-face mode, the upper body of the passenger in the seated state can be stably supported by the placement area formed by tilting upward relative to the seat cushion 100.

[0057] Here, the upper seat back 200 can adjust the rotation range by a separate operating button (not shown) provided on the cover part 120 for blocking the connection guide 110 from being exposed to the outside, thereby providing effective support for different sitting postures of passengers through the front and inner edges 210 in the driving mode and the face-to-face mode respectively.

[0058] More specifically, the upper seat back 200 can be adjusted in the following manner: when the upper seat back 200 is rotated to a range in which the angle between the inner edge 210 and the upper surface of the seat cushion 100 is greater than 90°, when the upper seat back 200 is adjacent to the seat cushion 100, the angle between the seat cushion 100 and the inner edge 210 is the largest, and as the upper seat back 200 is rotated toward the initial position, i.e., the upright position, the angle between the seat cushion 100 and the inner edge 210 gradually decreases.

[0059] On the other hand, the lower seat back 300 is located inside the opening portion A and is rotatably coupled to the seat cushion 100 so as to be deployed to the rear of the seat cushion 100 .

[0060] That is, the lower seat back 300 is configured to support the lumbar vertebrae of a passenger sitting on the seat cushion 100 in a normal driving mode, partially shields the opening A and is formed at a predetermined height, and is axially coupled to the connecting guide 110 (refer to Figure 4 ), so that the seat cushion 100 can be selectively rotated toward the rear.

[0061] Preferably, the lower seat back 300 can be operated in conjunction with the upper seat back 200 , and more preferably, when the upper seat back 200 rotates to face the seat cushion 100 , the lower seat back 300 can be operated in conjunction with the upper seat back 200 to rotate in a direction to be deployed to the rear of the seat cushion 100 .

[0062] In addition, the lower seat back 300 may be rotated independently of the upper seat back 200 to be deployed to the rear of the seat cushion 100 , and the rotation angle may be adjusted in a state of being deployed to the rear of the seat cushion 100 .

[0063] In other words, the lower seat back 300 can be operated in conjunction with the upper seat back 200, that is, when the upper seat back 200 is rotated forward, the lower seat back 300 is rotated rearward to be deployed to the rear. In addition, the lower seat back 300 can also be rotated independently regardless of the operation of the upper seat back 200. In each case, the rotation angle can be adjusted in the state of being deployed to the rear of the seat cushion 100 by rotation by a separate operation button (not shown) provided on the cover part 120 for blocking the connection guide 110 from being exposed to the outside.

[0064] Therefore, if Figure 2 As shown in FIG. 1 , when the lower seat back 300 rotates in conjunction with the upper seat back 200 as the upper seat back 200 rotates forward, the lower seat back 300 can support the legs of a passenger sitting on the seat cushion 100. Figure 3 As shown, when the lower seat back 300 is independently rotated to be deployed to the rear of the seat cushion 100 regardless of the operation of the upper seat back 200 , the lower seat back 300 can provide a leg rest function for passengers sitting on the rear seats.

[0065] Based on the above configuration, operations of the upper seat back 200 and the lower seat back 300 in the driving mode, the face-to-face mode, and the leg rest mode are described as follows.

[0066] Driving Mode

[0067] In the normal driving mode, the front portions of the upper seat back 200 and the lower seat back 300 support the passenger and the lumbar spine of the passenger, respectively (refer to Figure 1 ).

[0068] Here, the lower seat back 300 has a shape that partially exposes the opening portion A and can be coupled to the connection guide 110, but considering design factors, etc., the lower seat back 300 can be formed in a shape corresponding to the shape of the opening portion A, that is, a circle.

[0069] Face to face mode

[0070] like Figure 4 As shown, when an operation button (not shown) is operated to switch from the driving mode to the face-to-face mode, as shown in FIG. Figure 5 As shown, the upper shaft 220 is driven by the driving motor M1 to rotate forward, so that the upper seat back 200 rotates in a direction to be folded onto the seat cushion 100 .

[0071] At this time, if Figure 7 As shown, in conjunction with this, the lower shaft 310 is driven by the driving motor M2 to rotate rearward, so that the lower seat back 300 is deployed to the rear of the seat cushion 100 .

[0072] When switched to the face-to-face mode, the lower seat back 300 can be operated in conjunction with the upper seat back 200, but can also be operated independently without regard to the operation of the upper seat back 200 by operating an operation button (not shown), and the range of rotation, i.e., the deployed position, can also be selectively adjusted by operating an operation button (not shown).

[0073] In the above-mentioned face-to-face mode, the upper seat back 200 rotates to a range where the angle between the inner edge 210 and the upper surface of the seat cushion 100 is greater than 90° (refer to Figure 2 ), so that the passenger can be supported by the inner edge 210, and the passenger's legs can be supported by the unfolded lower seat back 300.

[0074] Leg support mode

[0075] like Figure 6 As shown, when an operation button (not shown) is operated to switch from the driving mode to the leg rest mode, the lower seat back 300 is independently rotated and is in a state of being deployed to the rear of the seat cushion 100 .

[0076] More specifically, when an operation button (not shown) is operated, the lower shaft 310 is driven by the driving motor M2 to rotate backward (refer to Figure 7 ), the lower seat back 300 is deployed to the rear of the seat cushion 100 independently of the upper seat back 200.

[0077] In this leg support mode, if Figure 3 As shown, a leg rest function can be provided for passengers sitting in the second row, i.e., behind the front passenger seat of the vehicle, and the angle of the lower seat back 300 unfolded to the rear of the seat cushion 100 can be selectively adjusted, so that the body shape of the second row passengers, such as leg length, etc., can be taken into consideration to achieve a comfortable ride.

[0078] The present invention can selectively realize two-way riding by converting the angle of the split seat back according to different modes, so that the sitting position can be changed without rotating the entire seat, thereby preventing interference caused by the rotation radius of the seat in advance and realizing two-way riding.

[0079] Therefore, the present invention can eliminate multiple structures that need to be applied in order to realize the conventional rotating mechanism, and can realize two-way riding, thereby simplifying the structure and reducing the weight.

[0080] In addition, the present invention can also independently convert the angles of the split seat backs, thereby providing a leg rest function for the second row passengers.

[0081] The present invention has been described above with reference to the embodiments shown in the accompanying drawings, but these embodiments are only exemplary, and a person skilled in the art may make various changes thereto, and all or part of the above embodiments may be selectively combined and configured. Therefore, the true technical protection scope of the present invention is determined by the technical ideas in the attached claims.

Claims

1. A vehicle seat with a convertible sitting direction, characterized in that: include: A seat cushion, mounted on the seat rails and sliding in the front-rear direction; an upper seat back rotatably coupled to the seat cushion and including an opening portion; as well as The lower seat back is located inside the opening portion and is rotatably coupled to the seat cushion so as to be unfolded to the rear of the seat cushion.

2. The vehicle seat with a convertible sitting direction according to claim 1, characterized in that: When the upper seat back is rotated to face the seat cushion, an inner side edge for forming the opening portion is exposed to a seating area.

3. The vehicle seat with a convertible sitting direction according to claim 2, characterized in that: The seating area is formed to be inclined upward relative to the seat cushion.

4. The vehicle seat with a convertible seating direction according to claim 3, characterized in that: The upper seat back is adjusted as follows: When the upper seat back is adjacent to the seat cushion, the angle between the seat cushion and the inner edge is the largest, and as the upper seat back rotates toward an initial position, the angle between the seat cushion and the inner edge gradually decreases.

5. The vehicle seat with a convertible sitting direction according to claim 1, characterized in that: When the upper seat back is rotated to face the seat cushion, the lower seat back operates in conjunction with the upper seat back to be deployed to the rear of the seat cushion.

6. The vehicle seat with a convertible seating direction according to claim 5, characterized in that: The lower seat back is capable of adjusting a rotation angle in a state where it is deployed to the rear of the seat cushion.

7. The vehicle seat with a convertible seating direction according to claim 1, characterized in that: The lower seat back rotates independently of the upper seat back to deploy rearwardly of the seat cushion.

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