Sheet structure

Abstract

To provide a sheet structure which can keep holding performance when a sheet back is tilted back and improve sitting comfortableness.SOLUTION: A seat structure comprises a seat back 12 including: a backward tilting main seat 16; and a side seat 18 which is bulged forward in a longitudinal direction of a vehicle at a lateral side of the main seat 16. The side seat 18 is vertically divided including: an upper side seat 18a which extends from a side part of the main seat 16 to an outer side in a vehicle width direction and is fixed to the main seat 16 at the approximately center thereof in a vertical direction; and a lower side seat 18b which is independently formed from the main seat 16.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat structure. [Background technology]

[0002] A vehicle seat typically has a seat back that supports the occupant's back and a seat cushion that supports the occupant's buttocks, thighs, etc. In a reclining seat, the upper part of the seat back can be tilted backward with the lower part of the seat back as a fulcrum.

[0003] Patent Document 1 discloses a seat structure equipped with a reclining mechanism. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-109703 Summary of the Invention [Problem to be solved by the invention]

[0005] In vehicles with reclining rear seats, the greater the angle at which the seatback is tilted backward, the more comfortable the resting position can be. If a seatback can be provided that allows the occupant to sit more stably and feel as if they are being wrapped in the seat, or if the side seats, which are part of the seatback, can be used as armrests, the riding comfort and sitting comfort can be further improved.

[0006] Therefore, this specification provides a seat structure that maintains the holding performance when the seat back is tilted backward and improves seating comfort. [Means for solving the problem]

[0007] The seat structure disclosed in this specification comprises a seat back having a main seat that can be tilted backward and side seats that bulge forward in the fore-and-aft direction of the vehicle on the sides of the main seat, and the side seats extend outward in the vehicle width direction from the sides of the main seat and are divided into upper and lower parts at approximately the center in the vertical direction into an upper side seat that is fixed to the main seat and formed, and a lower side seat that is formed independently of the main seat.

[0008] According to the above configuration, the holding performance is maintained when the seat back is tilted backward, and the seating comfort is improved.

[0009] In addition, when the seat back is in an initial position, the lower side seat may be positioned further forward in the vehicle longitudinal direction than the upper side seat.

[0010] According to the above configuration, even when the seat back is in the initial position where it is not tilted backward, a space for the occupant to place their elbows can be secured.

[0011] The main seat and the side seats may be provided on the seat backs of the rear seats of the vehicle.

[0012] According to the above configuration, it is possible to improve the seating comfort in the rear seats, which are used as passenger seats and for which riding comfort is particularly important.

[0013] The position at which the door is divided into upper and lower parts may be within 10 mm above the door armrest provided on the door trim on the passenger compartment side of the vehicle door in the vertical direction of the vehicle.

[0014] According to the above configuration, the seat can be positioned at a suitable height for passengers of various builds to rest their elbows.

[0015] Furthermore, when the main seat is tilted backward, an upper surface of the lower side seat extending in the vehicle front-rear direction may be exposed.

[0016] According to the above configuration, the upper surface of the lower side seat can be used as an armrest. [Effects of the Invention]

[0017] The seat structure disclosed in this specification maintains the holding performance when the seat back is tilted backward, improving seating comfort. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a diagram schematically illustrating a seat structure according to an embodiment. [Figure 2] FIG. 2 is a perspective view of FIG. 1, showing a state in which the main seat is tilted backward. DETAILED DESCRIPTION OF THE INVENTION

[0019] The seat structure will be described below with reference to the drawings. In each drawing, "Fr," "Up," and "Rh" indicate the front, upper, and right sides of the vehicle, respectively.

[0020] FIG. 1 is a diagram schematically illustrating a seat structure according to an embodiment. FIG. 1 shows a seat structure 10 for a right rear seat. The seat structure for the left rear seat is similar to that for the right side, and therefore detailed description and illustration thereof are omitted. The seat structure 10 shown in FIG. 1 includes a seat back 12 at the rear of the seat that supports the back of an occupant in a vehicle seat, and a seat cushion 14 at the seat surface of the seat that reduces strain on the occupant's buttocks and thighs. A headrest 12a is provided at the upper end of the seat back 12 to support the occupant's head from behind. The rear end of the seat cushion 14 and the lower end of the seat back 12 are connected to a connecting shaft (not shown) via a reclining mechanism. With this configuration, the seat back 12 can be tilted backward within a predetermined range.

[0021] The seatback 12 has a main seat 16 that can be tilted backward, and side seats 18 that bulge forward in the longitudinal direction of the vehicle on either side of the main seat 16. The side seats 18 are provided so as to extend outward in the vehicle width direction from the sides of the main seat 16, and their shape allows the occupant to sit in the seat more stably (i.e., as if wrapped in the seat). The side seats 18 are also divided into upper and lower halves, an upper side seat 18a and a lower side seat 18b (shown in light grey in Figure 1), approximately at the center in the vertical direction.

[0022] The upper side seat 18a is formed and fixed to the main seat 16, while the lower side seat 18b is formed independently of the main seat 16. Therefore, when the occupant leans the main seat 16 backward, only the upper side seat 18a folds backward along with the movement of the main seat 16. In other words, when the main seat 16 is leaned backward, the upper surface of the lower side seat 18b, which was partially hidden by the upper side seat 18a, becomes visible. This configuration will be further described with reference to Figure 2.

[0023] FIG. 2 is a perspective view of FIG. 1, showing the state in which the main seat is tilted backward. In FIG. 2, the seat back 12 is indicated by a lighter shade to distinguish it from other components. When the seat back 12 is tilted backward, an upper surface 24 of the lower side seat 18b (hereinafter referred to as the "armrest portion 24") appears. In FIG. 2, this armrest portion 24 is indicated by a darker shade. Because the armrest portion 24 is one part that constitutes the lower side seat 18b, which is part of the seat back 12, it can be made of the same material as the seat back 12. For example, the armrest portion 24 is formed by wrapping synthetic leather as a skin material around elastic urethane foam or the like, which provides soft cushioning and further increases the comfort of passengers who place their elbows on it.

[0024] In the seat back 12 according to this embodiment, in its initial position, the lower side seat 18b is set to be located further forward in the vehicle longitudinal direction than the upper side seat 18a. With this configuration, even when the seat back 12 is in the initial position where it is not tilted backward, space for the occupant to place their elbows can be secured. Therefore, depending on the physique of the occupant, it may be difficult to place their elbows on the door armrest 22 provided on the door trim 20 on the passenger compartment side of the vehicle door. However, even in such cases, the occupant can rest their elbows on part of the armrest portion 24 constituting the seat back 12, improving sitting comfort.

[0025] The position where the side seat 18 is divided into upper and lower halves is set within 10 mm above the door armrest 22 of the door trim 20. This position is set at a height suitable for resting elbows of occupants of various builds. Note that, because the difference in height between the position where the side seat 18 is divided into upper and lower halves (in other words, the position of the armrest 24) and the door armrest 22 is negligible, the door armrest 22 and the armrest 24 can be said to be provided so as to be continuous (i.e., connected). In this embodiment, the depth of the armrest 24 when the seatback 12 is tilted backward to the maximum is set to approximately 40 mm. Therefore, the occupant can rest their entire forearms in this continuous area (i.e., across the entire area between the door armrest 22 and the armrest 24), thereby improving seating comfort.

[0026] As described above, in the seat structure disclosed in this specification, the side seat 18, which is part of the seat back 12, is divided approximately in the center in the vertical direction, and the upper surface of the lower side seat 18b, which is formed independently of the main seat 16, is used as the armrest 24, thereby improving seating comfort. In other words, in the past, when the main seat 16 was tilted backward, the door armrest 22, where the occupant normally places their elbows, was separated from the main seat 16, making it impossible to achieve both reclining and armrests. However, with this seat structure 10, the configuration described above makes it possible to achieve both reclining of the main seat 16 and armrests, thereby improving seating comfort while maintaining the holding performance when the seat back 12 is tilted backward.

[0027] The above description is merely an example, and the side seat may be configured as long as it is divided into an upper side seat that is fixed to the main seat and formed approximately at the center in the vertical direction, and a lower side seat that is formed independently of the main seat. Therefore, other configurations may be changed as appropriate. For example, the depth dimension of the armrest 24 that appears when the main seat 16 is tilted backward may be set between 20 mm and 40 mm and may be changed depending on the vehicle model. In addition, in the embodiment, the door armrest 22 and the armrest 24 are provided so as to be continuous, but the armrest 24 can improve the seating comfort of the occupant, so the door armrest 22 does not necessarily have to be configured so as to be continuous. [Explanation of symbols]

[0028] 10 Seat structure, 12 Seat back, 14 Seat cushion, 16 Main seat, 18 Side seat, 18a Upper side seat, 18b Lower side seat, 20 Door trim, 22 Door armrest, 24 Upper surface of lower side seat (armrest part).

Claims

1. A seat back includes a main seat that can be tilted backward, and a side seat that bulges forward in the vehicle longitudinal direction on the side of the main seat, The side sheet is extending outward in the vehicle width direction from the side portion of the main seat, The seat is divided into upper and lower parts at the approximate center in the vertical direction, an upper side sheet formed by being fixed to the main sheet, and a lower side sheet formed independently of the main sheet. A seat structure characterized by:

2. When the seat back is in an initial position, the lower side seat is located further forward in the vehicle front-rear direction than the upper side seat.

2. The seat structure according to claim 1.

3. The main seat and the side seats are provided on the seat backs of the rear seats of the vehicle. The seat structure according to claim 1 .

4. The position where the door is divided into upper and lower parts is within 10 mm above a door armrest provided on a door trim on the passenger compartment side of the vehicle door in the vertical direction of the vehicle.

2. The seat structure according to claim 1.

5. When the main seat is tilted backward, an upper surface of the lower side seat extending in the vehicle front-rear direction appears. The seat structure according to claim 1 .

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