JPH0529844U - Passenger seat back - Google Patents

Abstract

(57) [Summary] [Purpose] The seat back of the front passenger seat is tilted forward to widen the front view of the rear seats. [Structure] Headrest 2 of passenger seat back 1b
A motor 5 configured to fold up and down the front side of the upper part 1c supporting the upper part 1c via a gear mechanism 4
And the passenger seat back 1b and seat cushion 1
First and second switches 6a and 7c for individually controlling the motor 5 are provided at the respective predetermined positions of a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a passenger seat back of a vehicle.

[0002]

[Prior Art]

 In passenger cars, the passenger seat may be seated in the rear seat even when the passenger seat is vacant. In this case, the seat back of the passenger seat blocks the front of the passenger seated in the rear seat to narrow the field of view. For this reason, conventionally, there has been a device in which the headrest located above the seat back of the passenger seat can be manually tilted so that the front view from the rear seat can be widened. In addition, if the passenger seat is, for example, a walk-in type and the seat back has a structure that can be tilted forward, the seat back can be tilted forward to widen the front view from the rear seats or the driver's seat. ing.

[0003]

[Problems to be solved by the device]

 By the way, there is a problem that it is troublesome to manually tilt the headrest of the passenger seat or to tilt the seatback of the passenger seat forward each time the passenger gets in the rear seat. For this reason, the passengers in the rear seats are often on board with a narrow forward field of view. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a front passenger seatback in which the front view of the rear seat can be easily widened.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, an upper portion that supports the headrest of the seat back of the passenger seat is configured to be capable of hoisting forward and backward in a middle-folded manner, and a motor that hoists the upper portion via a gear mechanism, The seat back and the seat cushion of the passenger seat are provided with first and second switches for controlling the motors at predetermined positions, respectively.

[0005]

[Operation] When the passenger seat is vacant, the motor is used to fold the upper part of the passenger seat back by the operation of the first switch provided on the seat back of the passenger seated in the rear seat. It is tilted to the front position and the front view from the rear seats is widened. On the other hand, by operating the second switch of the passenger seated in the passenger seat, the ups and downs of the upper part of the seat back of the passenger seat are finely adjusted by the motor to fit the physique of the passenger, etc., and the comfort of the passenger seat is improved. Is improved.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a walk-in type passenger seat to which the present invention is applied. The passenger seat 1 is composed of a seat cushion 1a and a seat back 1b, and the seat cushion 1a is driven by respective corresponding motors (not shown). The seat back 1b can be slid back and forth, the seat back 1b can be tilted forward, and the angle of the seat back 1b can be adjusted. In the center of the upper portion of the seat back 1b, a backrest 1c that is bendable to the front side is provided separately from the seatback 1b, and the headrest 2 is arranged on the upper portion of the backrest 1c. ing.

As shown in detail in FIG. 2, the backrest 1c is rotatably supported by the frame 1d of the seatback 1b. That is, bearings 3, 3 are welded to the left and right sides substantially in the center of the frame-like frame 1d of the seat back 1b, and these bearings 3, 3 are attached to the shaft 1f of the frame-like frame 1e of the backrest 1c. Both ends are rotatably supported. A bevel gear 4 is fixed to one end of the shaft 1f, and a small gear 5a of a motor 5 arranged on the frame 1d meshes with the bevel gear 4, and the backrest 1c is a normal gear of the motor 5. It is adapted to be rotated to the front side and rotated in the reverse direction to the rear side.

As shown in FIG. 1, the passenger seat 1 is equipped with a walk-in switch 6 and a seat adjust switch 7, and the walk-in switch 6 is operated by passengers in the rear seats and the driver's seat. The seat adjust switch 7 is arranged on the right shoulder of the seat back 1b for easy operation, and the seat adjust switch 7 is arranged on the left side surface of the seat cushion 1a for easy operation by the passenger in the passenger seat. As shown in detail in FIG. 3, the walk-in switch 6 is composed of two push button switches 6a and 6b. By pushing a predetermined position of the switch 6a, the seat back 1b is tilted forward or reclining such as angle adjustment. An operation is performed, and a center folding operation is performed in which the backrest 1c is rotated separately from the seat back 1b by pressing another predetermined position of the switch 6a. Further, the sliding operation of the seat cushion 1a is performed by pushing the predetermined position of the switch 6b. On the other hand, as shown in detail in FIG. 4, the seat adjust switch 7 is composed of knob-shaped manual switches 7a and 7b and a push button type middle folding switch 7c, and is located in the direction of arrows A and A'of the manual switch 7a. Reclining adjustment of the seat back 1b is performed by operation, and slide adjustment of the seat cushion 1a is performed by operation of moving the manual switch 7b in the directions of arrows B 1 and B '. Further, the front height of the seat cushion 1a can be adjusted by operating the front side of the manual switch 7b in the directions of arrows C and C ', and the rear side of the manual switch 7b can be operated in the directions of arrows D and D'. By this, the rear height of the seat cushion 1a is adjusted. Further, the center folding switch 7c performs the center folding operation similar to the center folding operation of the switch 6a. The switch 6a and the center folding switch 7c are arranged so that the motor 5 continues to rotate in a predetermined direction while being pressed.

The passenger seat 1 of the present invention is configured as described above and is used as follows. When the passenger seat is vacant, the occupant seated in the rear seat or the driver operates the switch 6a of the walk-in switch 6 in the middle, and as shown in FIG. 5, the backrest 1c of the seat back 1b is arrowed. Rotate it in the direction of E in the shape of a half-fold and tilt it forward. As a result, the range S of the forward field of view of the occupant in the rear seat is widened as indicated by the chain double-dashed line. On the other hand, when an occupant is seated in the passenger seat 1, by operating the middle-folding switch 7c of the seat adjust switch 7 of the occupant, the occupant of the backrest 1c is lifted so that the passenger's comfort is improved. The position is finely adjusted according to the physique.

In addition, although an example has been described in which only the backrest 1c is rotated separately from the seatback 1b to tilt it forward in the shape of a middle fold, thereby increasing the forward field of view of the occupant in the rear seat, but the invention is not limited to this. Alternatively, the backrest 1c may be folded forward and then folded forward. That is, as shown in FIG. 6, an occupant seated in the rear seat or a driver reclines the switch 6a of the walk-in switch 6 to tilt the seat back 1b of the front passenger seat 1 forward, and then perform a middle bending operation. Then, the backrest 1c is folded forward and folded forward. As a result, the front view of the passenger in the rear seat is further widened.

Further, in the above-described embodiment, the case where the portion of the backrest 1c to which the headrest 2 is attached can be folded forward with respect to the seat back 1b in the shape of a center fold has been described, but the present invention is not limited to this. As shown in FIG. 7, a substantially upper half 8c of the seat back 8b of the passenger seat 8 may be configured to be able to be folded forward in a middle-folded shape, and the upper half 8c may be rotated by a motor. . The walk-in switch 6 is arranged on the right shoulder on the driver's seat side of the upper half 8c, and the seat adjust switch 7 is arranged on the left side surface of the seat cushion 8a.

[0012]

[Effect of the device]

 As described above, according to the present invention, the upper portion that supports the headrest of the seat back of the passenger seat is configured so that it can be undulated in the front in a folded manner, and the motor that undulates the upper portion via the gear mechanism and the passenger seat. Since the first and second switches for individually controlling the motors are provided at the predetermined positions of the seat back and the seat cushion, respectively, when the passenger seat is vacant, the passenger in the rear seat is By operating the switch on the passenger seat, the front view of the rear seat can be easily widened by tilting the upper part of the passenger seat seat back forward, while the passenger sitting on the passenger seat operates the second switch. By doing so, the upper part of the seat back can be finely adjusted to a position corresponding to the physique of the occupant, etc., to improve the riding comfort.

[Brief description of drawings]

FIG. 1 is a perspective view of a passenger seat according to the present invention.

FIG. 2 is a partial cross-sectional view of a seat cushion showing the frame structure of the backrest of FIG.

FIG. 3 is a front view of the walk-in switch of FIG.

FIG. 4 is a front view of the seat adjust switch of FIG.

5 is a side view when the backrest of the passenger seat of FIG. 1 is tilted forward.

FIG. 6 is an explanatory diagram of a case where the seat back of the passenger seat is tilted forward and the backrest is tilted forward.

FIG. 7 is a side view showing another embodiment of the seat back of the passenger seat of the present invention.

[Explanation of symbols]

 1 passenger seat 1b seat back 1c backrest 2 headrest 4 bevel gears 5 motor 6 walk-in switch 7 seat adjust switch

Claims (1)

[Scope of utility model registration request] 1. A motor for hoisting an upper portion supporting a headrest of a front passenger seat back in a middle-folded manner so that the upper portion can be hoisted via a gear mechanism, a seat back of the passenger seat, and a seat. A seat back for a passenger seat, wherein first and second switches for individually controlling the motor are provided at respective predetermined positions of the cushion.