JPH01141134A - Automobile seat - Google Patents

Abstract

PURPOSE:To facilitate the storage of a headrest and the expansion of sightability or the like by setting up a pair of separating places at both symmetrical sides in an upper end of a seat back, and constituting a separating state and a forming state of the headrest to be selectable upon sliding each separating piece. CONSTITUTION:An upper end 10 of a seat back 1 is formed into a trapezoidal form at a front view, and a pair of separating pieces 2a, 2b are set up each free of slide motion along both symmetrical side edges of this upper end 10. With this formation, these separating pieces 2a, 2b make a separating state of a headrest R along these symmetrical side edges in the upper end 10 of the seat back 1 and a forming state of the headrest R, where it is projected upward the seat back 1 and each upper end comes into contact with each other, selectable. At this time, these separating pieces 2a, 2b forms a part of the seat back 1 in the separating state of the headrest R, expanding a field of view. On the other hand, in the forming state of the headrest R, such a recess 20 that holds the occipital of a rider is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automobile seat having a headrest.

(Prior Art) Conventionally, as shown in FIG. 8, in an automobile seat, a pair of support rods is attached to the lower end of a headrest a so as to protrude, and the support rods are inserted from the upper surface of a seat back C. It is known that a headrest a is removably attached.

However, in the above-mentioned conventional automobile seat, the headrest a protrudes above the seat back C, which obstructs the forward view of the occupant in the rear seat. Particularly when no one is seated in the passenger seat, there is a desire to remove the headrest a to increase the forward visibility. In this case, with the above-mentioned conventional car seat, it is troublesome to pull the support rod upward by the length of the support rod, and the headrest a needs to be stored somewhere in the vehicle interior. .

Therefore, it is desired to develop an automobile seat having a headrest a that can be easily omitted when no one is seated in the front seat, and that does not cause problems in storage space.

(Purpose of the Invention) This invention was made to solve such conventional problems, and when there is a front seat passenger, the head of the passenger is supported, and when there is no front seat passenger, the head of the rear seat passenger is supported. An object of the present invention is to provide a car seat having a headrest which can improve the forward visibility of the headrest and which can be easily and reliably switched.

(Structure of the Invention) In this invention, a pair of divided pieces are arranged on the left and right sides of the seat back, and the pair of divided pieces are arranged at the disassembled position of the headrest along the left and right sides of the seat back and protrude above the seat back. The headrest is mounted so as to be movable between the headrest forming position and the headrest is configured by the pair of divided pieces at the headrest forming position.

According to the above configuration, when there is an occupant in the front seat, the head of the front seat occupant can be supported by moving the pair of split pieces to the headrest forming position, and when there is no occupant in the front seat, the pair of split pieces can be moved to the headrest forming position. By returning the pieces to the headrest disassembled position, forward visibility for the rear seat occupant can be improved, and the divided pieces are arranged along both left and right sides of the seat back and become part of the seat back.

(Embodiment) In FIG. 1, the upper end portion 10 of the seat back 1 is formed into a substantially trapezoidal shape when viewed from the front, and the upper end portion 10 is provided with a pair of divided pieces 2a along its left and right edges.

2b is placed. This pair of divided pieces 2a.

2b shows the disassembled state of the headrest along both left and right edges of the upper end portion 10, as shown by solid lines in FIG. 1, and a pair of divided pieces 2a, as shown by dashed lines in the same figure.

2b protrudes above the seat back 1 and their upper ends are in contact with each other so that they can slide (see the two-dot chain arrow) or rotate (see the three-dot chain arrow). is attached to seat back 1. The divided pieces 2a and 2b become a part of the seat back 1 when the headrest is disassembled, and when the headrest is formed, an approximately triangular headrest R is formed which has a through-hole 20 in the center that is large enough to hold the back of the occupant's head. The size is set so that

FIG. 2 shows a first embodiment in which the pair of divided pieces 2a are slidably movable. In Figure 2,
The upper end portion 10 of the seat back 1 is formed into a substantially trapezoidal shape when viewed from the front by the seat back frame 11, and a pair of pins 3 are provided with brackets at the upper end portions of both side edges of the seat pack frame 11 so as to protrude laterally. It is attached via 12. The pair of pins 3 consist of a shaft portion 31 and a head portion 32 having a larger diameter than the shaft portion 31, and are arranged along both side edges of the seat back 1 at predetermined intervals.

The divided piece 2a is formed into a rod shape by a frame 21a disposed on a surface facing the side surface of the upper end portion 10 of the seat back 1, a cushion material 22, and an outer skin 23. An elongated hole 211a having a width approximately the same size as the shaft portion 31 of the pin 3 is formed through the frame 21a.
The heads 32 of a pair of pins 3 are held within 1a. A concave groove 24 larger than the head 32 is provided in the elongated hole 211a.
is formed, so that the divided piece 2a is connected to the elongated hole 211.
It is possible to slide by the length of a, and
A pair of pins 3 restricts the sliding direction.

According to the automobile seat having the above structure, the pin 3 is located at the upper end of the elongated hole 211a when the headrest is disassembled as shown by the solid line in FIG. It is held along the side of the From this state, move the left and right divided pieces 2a upwards as shown in Figure 2.
When the divided piece 2a is slid to the position shown by the dotted chain line, the divided piece 2a is guided by the pair of bins 3 and is slid diagonally upward so that the upper ends of the left and right divided pieces 2a approach each other.
As a result, the pair of divided pieces 2a protrude upward from the upper end 10 of the seat back 1, and the seat back 1 becomes in a headrest forming state as shown by the dashed line in FIG. It is held by the frictional force between the bracket 12 and the bracket 12. By pushing the pair of divided pieces 2a downward, the seat back 1 can be returned to the headrest disassembled state again.

In this way, when there is a passenger in the front seat, the pair of divided pieces 2a
By putting the headrest into the headrest formation state, the head of the occupant can be protected, and when the occupant is not present, the pair of split pieces 2a can be put into the headrest disassembly state, so that the front view of the rear seat occupant can be changed to the headrest formation state. can be larger than the state. In addition, mutual switching between the two states is easy because it is only necessary to slide the divided piece 2a in the vertical direction.Moreover, when the headrest is disassembled, the divided piece 2a is a part of the seat back 1. Since the headrest 10 is held along both sides of the upper end 10, there is no need to provide a special storage location somewhere in the vehicle interior, as in the case where the conventional headrest a shown in FIG. 7 is pulled out. do not have.

FIG. 3 shows a second embodiment in which the pair of divided pieces 2a of the first embodiment are configured to be rotatable. In FIG. 3, the frame 21b and the bracket 12 are connected to each other by a connecting bolt 4 at one end of the divided piece 2b. A flanged bush 41 is interposed between the connecting bolt 4 and the frame 21b, a unibu washer 43 is interposed between the flanged bush 41 and the head 42 of the connecting bolt 41, and the head 42, a unibu washer 43, a flanged bush 41, and the like are separated from the cushion material 22 by a cap 44. Due to these, the divided piece 2b is configured to be able to rotate with respect to the seat back 1 around the axis X of the connecting bolt 4 with some resistance.

As shown in FIGS. 3 and 4, the frame 21b has an arcuate groove 211b centered around the connecting bolt 4, and a stopper pin 5 is fixed to the bracket 12 with a screw 51. The pin 5 is arranged to protrude into the groove 211b.

This stopper pin 5 is connected to both end surfaces 212b of the groove 211b.
By making contact with the split piece 2b, the rotation range of the divided piece 2b is restricted to approximately 180' between the headrest disassembled state shown by the solid line in FIG. 1 and the headrest formed state shown by the dashed-dotted line in FIG.

According to the automobile seat in this second embodiment, the third
In the disassembled state of the headrest shown by the solid line in the figure, the stopper pin 5 comes into contact with one end surface 212b of the groove 211b, whereby the divided piece 2b is held as part of the seat back 1 along the side of its upper end 10. Ru. From this state, when the left and right divided pieces 2b are rotated approximately 1000 times around the axis X toward the front side of the seat back 1 to the position shown by the dashed line in FIG. As a result, the pair of divided pieces 2b protrude upward from the upper end 10 of the seat back 1, and the seat back 1 becomes in a headrest forming state as shown by the dashed line in FIG. By rotating this pair of divided pieces 2b in the opposite direction, the seat back 1 can be returned to the bed rest disassembled state again.

FIG. 5 shows a third embodiment in which the left and right divided pieces 2b of the twelfth embodiment described above are configured to rotate in conjunction with each other. A shaft body 6 is fixed to the frame 21c of the left and right divided pieces 2C, and this shaft body 6 is rotatably attached to the seat back frame 11 by a bearing 25° 13. Further, a drive shaft 7 is rotatably attached to the seat back frame 11 by a bearing 71, and the end of the drive shaft 7 and the tip of the shaft 6 are connected by a pair of bevel gears 61 and 72. . As a result, when either one of the pair of divided pieces 2C is rotated, the rotation operation force is transmitted via the drive shaft 7 and the other one is also operated in conjunction with the rotation operation, and the switching operation between the headrest disassembled state and the headrest formed state is performed. can be easily done.

In the third embodiment, the rotational force between the drive shaft 7 and the shaft body 6 is transmitted by a pair of bevel gears 61 and 72, but the invention is not limited to this, and for example, a universal joint as shown in FIG. 8 may be used to transmit the rotational force. Also, without using the drive shaft 7, the -pair of shaft bodies 6 are connected by an inner wire 9 rotatably held by an outer case 91,
The rotational operating force may be transmitted from one divided piece 2c to the other divided piece 2c using the inner cable 9.

In the first, second, and third embodiments, the pair of divided pieces 2a, 2b, and 2c are shown as elongated rod-shaped pieces, but they are not limited to this. Various shapes can be applied to form a headrest R capable of supporting the back of the head.

Further, in this case, the upper ends of the pair of divided pieces do not necessarily need to be in contact with each other in the headrest forming state.

(Effects of the Invention) According to the automobile seat of the present invention, when there is an occupant in the front seat, the head of the front seat occupant can be supported by moving the pair of divided pieces to the headrest forming position, and the head of the front seat occupant can be supported. When no occupant is present in the headrest, the pair of split pieces can be returned to the disassembled position of the headrest to improve forward visibility for the rear seat occupant.

In addition, mutual switching between the above two positions can be easily performed by simply moving the divided pieces.Moreover, when the headrest is disassembled, the divided pieces are aligned with the left and right sides of the seat pack. Since it is placed and becomes part of the seat pack, there is no need to provide a special storage location somewhere inside the vehicle, unlike when the headrest of a conventional car seat is pulled out.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the first and second embodiments of the present invention;
Fig. 2 is a sectional view showing the main parts of the first embodiment, and Fig. 3 is a sectional view showing the main parts of the first embodiment.
A sectional view showing the main part of the embodiment, FIG. 4 is a cross-sectional view showing the main part of the embodiment,
A sectional view taken along the V line; FIG. 5 is a sectional view showing essential parts of the third embodiment;
FIG. 6 is an explanatory diagram showing another example of the rotational force transmitting means in the third embodiment, FIG. 7 is an explanatory diagram showing still another example, and FIG.
The figure is a perspective view of a conventional automobile seat. 1... Seat back, 2 a, 2 b * 2
c...divided piece, R...headrest. Patent applicant Delta Kogyo Co., Ltd. Representative Patent attorney Etsushi Kotani
Patent Attorney Chief 1) Masayuki Patent Attorney Yasuo Itaya Figure 1 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. A pair of divided pieces are arranged on the left and right sides of the seat back, and the pair of divided pieces has a headrest disassembled position along the left and right sides of the seat back, and a headrest that protrudes above the seat back. mounted so as to be movable between the forming position and
An automobile seat characterized in that a headrest is constituted by the pair of divided pieces at the headrest forming position. 2. The automobile seat according to claim 1, wherein the pair of divided pieces is configured to change between a headrest disassembly position and a headrest forming position by sliding in the vertical direction. 3. The automobile seat according to claim 1, wherein the pair of divided pieces is configured to change between a headrest disassembly position and a headrest forming position by rotating. 4. Claims 1, 2, or 3, characterized in that the pair of divided pieces are configured to interlock with each other.
Automobile seats as described in Section 1.