JPS62134340A - Seat for vehicle - Google Patents

Abstract

PURPOSE:To protect an infant accurately and easily by making a heat rest for an adult seat cooperate with an arm rest part when said infant is seated and using these parts as a chest part protecting member for said infant. CONSTITUTION:A movable seat part 2 is installed, rotatably frontward and backward, to the front side center part of a seat cushion 1, so as to form a nearly horizontal seating part on the upper part of the rear side center part of the seat cushion 1. And, by backwardly rotating this movable seat part 2, a nearly horizontal seating part can be formed on the upper part of the rear side center part of the seat cushion 1. Also, arm rests 4 are installed on both sides of the seat back 3, rotatably around pins 7 while with their positions adjustably, and a head rest 5 is installed on the upper ends of the arm rests 4, rotatably through pins 8. And, by adjusting the arm rests 4 to a proper forwardly inclined angle, the head part and chest part of an infant in a seated position at the rear part of the head rest 5, can be protected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a seat for vehicles such as automobiles, aircraft, and ships.

[Conventional technology]

Regarding conventional infant seats, for example, Japanese Patent Application Laid-Open No. 59-1
There is one as shown in Japanese Patent No. 56836. This seat has an armrest for infants attached to the seat back of an adult seat with a pin so that it can be folded forward almost horizontally. Further, this seat has a movable seat portion provided at the front center portion of the seat as part of the seat cushion in order to raise the eye point of the infant. This movable seat is attached to the seat so that it can be rotated forward and backward using the skin as a hinge, and the movable seat can be rotated backward and used as a seating section for a seat cushion for infants.

[Problem that the invention seeks to solve]

With this conventional structure, when a vehicle suddenly brakes while an infant is seated, or receives an impact force from the front, the infant's head, chest, etc. move forward and are restrained and protected in front of the armrest. be done. However, if this restraint area is small, it is difficult for the infant to be restrained at a good restraint point.
There was a problem in that the restraint for young children was not sufficient.

The present invention has been made in view of these conventional problems, and an object of the present invention is to improve the protection performance for infants when using infant seats.

[Means for solving problems]

The present invention takes the following technical measures to solve the above problems. That is, a seat cushion part (1) for a passenger to sit on, and the seat cushion part (1)
a seat back portion (3) that supports the back of a seated occupant, and one end of which is attached to the seat cushion portion (
1) A movable seat part (2) forming an almost horizontal infant seating part above the rear center part, and a rod-shaped part on the left and right sides of the seat back part (3) as part of the seat back part (3). an armrest portion (4) whose lower part is rotatably connected to the seat back portion (3); and an armrest portion (4) rotatably connected to the upper portion of the armrest portion (4), the 3) Supports the head of the occupant when positioned upward, and protects the head and chest of the infant seated at the rear when the armrest section (4) is adjusted to an appropriate forward tilt angle. A headrest part (5) provided in the armrest part (4), which adjusts the rotation angle of the armrest part (4) and the seat back part (3), and the headrest part (5) and the armrest part. (4
) and an angle adjustment device (6) for adjusting the rotation angle of the vehicle seat.

[Effect]

Hereinafter, the operation of the present invention will be explained using FIG. 1 and FIG. 2. As shown in FIG. 1, the adult seat is composed of a seat cushion section (1), a seat back section (3), and a headrest section (5). When using the infant seat, as shown in FIG. 2, the movable seat portion (2) is placed in a position where the infant can be seated. Next, a bar is formed at the left and right ends as a part of the seat back part (3), and the lower part of the bar is formed as a part of the seat back part (3).
) The armrest part (4) rotatably attached to the seat is adjusted to an appropriate forward tilt angle to hold the seated infant from both sides. Next, the headrest part (5) and the armrest part (5) are rotatably connected to the upper part of the armrest part (4).
The rotation angle of step 4) is adjusted to protect the head and chest of a seated infant at the rear of the headrest section (5).

If the vehicle etc. suddenly brakes in such a state or receives an impact force from the front, the head and chest of the infant who is about to jump forward will be affected by the headrest part (
5) The entire rear part of the vehicle is restrained and protected. Therefore, it has excellent safety and protection performance.

〔Example〕

Next, one embodiment of the present invention will be described using FIGS. 1 to 5. The overall configuration is shown in FIGS. 1 and 2. A seat cushion l is attached to a vehicle and allows a passenger to sit on it. The seat back 3 has one end attached to the seat cushion 1 and supports the back of the occupant. The movable seat portion 2 is attached to the front center portion of the seat cushion 1 so as to be rotatable forward and backward so as to form a substantially horizontal seating portion above the rear center portion of the seat cushion 1. Then, when the movable seat part 2 is turned backward so that a substantially horizontal seating part is formed above the rear center part of the seat cushion 1, the infant can be seated, and the seated infant can maintain a high eye point. The armrest 4 is formed into a rod shape at the left and right ends as a part of the seat back 3, and its lower part is attached to the seat back 3 with a pin 7 so that its rotational position can be adjusted. The armrest 4 holds the seated infant from both sides by adjusting the rotation angle with the seat back 3 to an appropriate forward tilt angle by the occupant.The headrest 5 is attached to the upper end of the armrest 4 with a pin. 8, and supports the occupant's head when positioned above the seat back 3, and when the armrest 4 is adjusted to an appropriate forward tilt angle, the rear part of the headrest 5 supports the occupant's head while the occupant is seated. The angle adjustment device 6 is provided in the armrest 4 and enables adjustment of the rotation angle of the armrest 4 and the seat back 3, depending on the forward tilt angle of the armrest 4. hand,
This is an interlocking device that simultaneously adjusts the rotation angles of the armrest 4 and headrest 5.

Next, the angle adjusting device 6 of this embodiment will be explained using FIGS. 3 to 5.

In FIGS. 3 and 4, the headrest frame 10
is rotatably attached to the armrest frame 11 by a pin 8 via a stopper 14 and a headrest handle 12.

A convex portion 101 is provided on the outer periphery of the end of the headrest frame 10 in order to attach the headrest handle 12 non-rotatably and movably from side to side.

A hole for attaching to the headrest frame 10 with a pin 8 is penetrated through the center of the headrest handle 12. Further, a slot 122 is bored in the lower inner circumference of the headrest handle 12 in order to fit the convex part 101 of the headrest frame 10, and a slot 122 is bored in the upper inner circumference in order to insert the spring 13. A hole 121 is bored.

The headrest handle 12 is attached to the headrest frame 10 with a pin 8 by inserting a spring 13, and is pressed in the direction of the headrest frame 10 by a spring 13. Further, the headrest handle 12 has teeth 123 cut in its outer circumference so that the headrest handle 12 can be fixed by engaging the teeth with the stopper 14 at any position in the rotational direction.

The stopper 14 is for fixing the headrest handle 12 at an arbitrary position in the rotation direction, and the teeth 12 on the outer periphery of the headrest handle 12 are provided on the inner periphery on the left side in the figure.
1. Teeth 141 for meshing are cut. Further, the stopper 14 is fixed by a first sprocket wheel 15 rotatably attached to the armrest frame 11.

The first sprocket wheel 15 is connected to the second sprocket wheel 17 by a chain 16, and rotates as the second sprocket wheel rotates. Further, the second sprocket wheel 17 is fixed to the seat back frame 20.

The tip 201 of the seat back frame 20 is tapered to accommodate the armrest handle 19, and is attached with a pin 7 so as to be movable left and right. Moreover, teeth 202 are cut on a part of the outer circumference of the tip end 201 of the seat back frame 20 so that the teeth can be engaged with and fixed to the armrest handle 19 at any position in the rotational direction.

A hole for attaching to the seat back frame 20 with a pin 7 is penetrated through the center of the armrest handle 19. Furthermore, a tip 201 of the seat back frame 20 is provided on the inner circumference of the lower part of the armrest handle 19.
A hole 192 is bored in the inner circumference of the upper part for inserting the hub 21 thereinto.

In addition, the tip of the hole 192 on the inner circumference of the lower part of the armrest handle 19 has a hole 192 for engagement so that it can be fixed to the outer circumference 202 of the seat back frame 20 at any position in the rotation direction. Teeth 193 are cut. Furthermore, a convex portion 194 is provided on the outer circumferential portion of the armrest handle 19 so as to be attached to the stopper 18 so as to be movable from side to side but not rotatable. The armrest handle 19 is attached to the seat back frame 20 with a pin 7 by inserting a handle 21, and is pressed in the direction of the seat back frame 20 by a spring 21.

The first part 18 is the convex part 1 of the armrest handle 19.
A slot 181 is provided for receiving 94. The convex portion 194 of the armrest handle 19 is connected to the stopper 18
By fitting into the slot 181, the armrest handle 19 can be moved left and right and fixed in a non-rotatable manner. Further, the stopper 18 is fixed to the armrest frame 11.

The armrest frame 11 is rotatably attached to the seatback frame 20 by a pin 7 via an armrest handle 21 and a stopper 18.

Next, the operation of this embodiment will be explained. In FIG. 1, when setting the infant seat, the movable seat portion 2 is rotated backwards so that the seating portion 2 is approximately horizontal, as shown in FIG. Next, the armrest 4 and headrest 5 are set using the interlocking device shown in FIG. That is, the armrest handle 19 is pulled as shown in FIG. 5 to unlock the armrest 4. Then, tilt the armrest 4 forward and release the armrest handle 19 at an arbitrary position to lock it as shown in FIG. 3. When the armrest 4 is tilted forward, the first sprocket wheel 15 is rotated by the chain 16, and the stopper 14 fixed thereto, the handle 12 and the headrest frame 10 fixed to the stopper 14 also rotate.

Therefore, the rotation angle of the headrest 5 with respect to the seat eight 3 changes depending on the forward inclination angle of the armrest 4 shown in FIG. If you want to change only the angle of the headrest 5 while leaving the forward tilt angle of the armrest 4 unchanged, pull the headrest handle 12 outward as shown in Figure 5, release the lock with the stopper 14, and turn the handle. Release the handle at any position and lock it again.

When set in this manner, the forward inclination angle of the armrest 4 is adjusted depending on the infant, and the headrest 5 is adjusted to an appropriate angle corresponding thereto.

That is, the pad at the rear of the headrest 5 exists as a child restraint part up to a position higher than the armrest 4.

In this state, if the vehicle etc. suddenly brakes or receives an impact force from the front, the head and chest of the infant who is about to jump forward will be in front of the infant, adjusted to an appropriate angle by the angle adjustment device 6. Since the entire rear pad of the headrest 5 is restrained and protected, it has excellent safety and protection performance.

In this embodiment, a chain is used as the interlocking device of the angle adjustment device 6, but the same effect can be obtained by using a heald, wire, etc. instead of the chain.

In addition, on the front side of the almost horizontal infant seating part of the movable seat part 2,
A body restraint member may be installed to restrain the infant from moving forward of the seat.

〔Effect of the invention〕

As explained above, the present invention allows the headrest portion (5) when an adult seat is used to be positioned appropriately in the front position of a seated infant depending on the forward inclination angle of the armrest portion (4) when an infant seat is used. By adjusting the angle and using it as a chest protection member for infants, it is possible to improve the protection performance for infants.

[Brief explanation of drawings]

1 to 5 show a preferred embodiment of the vehicle seat according to the present invention, in which FIG. 1 is a front view thereof, FIG. 2 is a side view thereof, and FIGS. 3 to 5 3 is a sectional view showing the angle adjusting device according to an embodiment of the present invention, FIG. 3 is a sectional view showing the angle adjusting device in a locked state, and FIG.
FIG. 5 is a cross-sectional view showing the angle adjustment device in an unlocked state. 1... Seat cushion part, 2... Movable seat part, 3.
...Seat back part, 4...Armrest part, 5...
・Navel rest part, 6... Angle adjustment device. Representative Patent Attorney Takashi Okabe Figure 1 Figure 2 @ Figure 3 Figure 5

Claims (2)

[Claims] (1) Seat cushion part for the passenger to sit on (1)
and a seat back part (one end of which is attached to the seat cushion part (1) and supports the back of a seated occupant).
3), and a movable seat part (2) forming a substantially horizontal infant seating part above the rear central part of the seat cushion part (1).
), and an armrest part () formed in a bar shape on the left and right sides of the seat back part (3) as a part of the seat back part (3), and whose lower part is rotatably connected to the seat back part (3). 4) is rotatably connected to the upper part of the armrest part (4), supports the occupant's head when located above the seat back part (3), and the armrest part (4) is a headrest part (5) that protects the head and chest of a seated infant at the rear when adjusted to a forward tilt angle; and a headrest part (5) provided within the armrest part (4), and an angle adjustment device (6) that adjusts the rotation angle of the seat back portion (3) and the headrest portion (5) and the armrest portion (4). (2) The angle adjustment device is a patented device that changes the rotation angle of the headrest portion (5) and the armrest portion (4) according to the rotation angle of the armrest portion (4) and the seatback portion (3). A vehicle seat according to claim 1.