JPH0755634B2 - Car seat - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automobile seat, and more particularly to an automobile seat that does not cause fatigue even when riding a long distance.

[Prior art]

As a conventional automobile seat, for example, Japanese Utility Model Laid-Open No. 51-112707
There is one as shown in Japanese Patent Publication.

This automobile seat has a flat seat back.

[Problems to be solved by the invention]

However, according to such a conventional example, since the upper body of the occupant is not always supported, it moves left and right. Therefore, some of them are provided with side supports, but even this may still cause a gap between the side support and the upper body of the occupant, and in such a case, it is impossible to reliably prevent the left and right movements of the occupant.

Therefore, the present invention has been made in view of such conventional problems, and an object of the present invention is to provide a vehicle seat that reliably blocks left and right movements of the upper body of an occupant.

[Means for solving problems]

In order to achieve such an object, the present invention provides a seat back having at least a first support part for supporting the scapulae around the upper body of the occupant and a second support part for supporting the spine around the upper body, and a seat supporting the seat back. A cushion, and the first support portion is located 300 mm upward from the hip point along the torso line,
Approximately 55 mm to the rear from the torso line, and to the left and right of the seat back seating center line
The first intersection point of 150 mm and the dimension 300 mm upward from the hip point along the torso line, and the dimension rearward and substantially perpendicular to the torso line is 58, 32, 37 mm and 153, 173, 17 to the left and right from the seating center line of the seat back
A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a rear side of the seat back. A curve having a curvature of 140 mm including the first and third intersections centered on the center of a curve and a curve having a curvature of 180 mm including the second and fourth intersections also centering on the rear side of the seat back. The second support is located within the enclosed area and is located 300 mm above the hip point along the torso line.
Be positioned in an area surrounded by straight sides of 114 mm and 120 mm in a rearward direction at a right angle to the torso line and straight sides of 8 mm to the left and right of the seating center line. It is characterized by having done.

[Work]

Since the present invention has such a configuration, the first support portion and the second support portion support a portion of the upper body of the occupant corresponding to the external auxiliary muscles and a portion in the vicinity thereof, so that the occupant's upper body moves laterally. Is surely blocked.

〔Example〕

1 to 4 are views showing an embodiment of the present invention.
Reference numeral S is a seat of the present invention that supports the upper half of the occupant, and the seat S includes a seat back 6 having a first support portion 1 and a second support portion 2 and a seat cushion 7 supporting the seat back 6. Become.

Before going into the detailed description, the terms used in the present specification will be specified here.

"Seating center line of seat back" means the back pan of JIS (Japanese Industrial Standard) D 4607-1977 three-dimensional sitting human model (3DM-JM50) (hereinafter simply referred to as "human model") for measuring vehicle interior dimensions. (A curved plate that has the shape of the back of the body)
Left and right center plane.

The "hip point" is the center of rotation between the torso and thigh of the "human model" and corresponds to the hip joint of the human body.

The "torso line" is a line (the axis of the body) that is displayed when the torso bar, which is a standard bar for measuring the tilt angle of the back pan, contacts the stopper of the back bracket, and is located behind the normal line of this line ( The tilt angle (direction A) is called the torso angle, which is 26 ° in the embodiment of the present invention.

The intersection is the intersection of the vertical dimension from the hip point HP and the horizontal dimension from the seating center line BC, and identifies the area supporting the upper body of the occupant by the first to fourth intersections. Specifying this area means that the upper half of the occupant can be held in the area even if the entire seat back does not have to be a so-called seat back.

As shown in FIG. 2, the first support portion 1 has a "seating center line" BC of the seat back 6 at a position where the upper dimension along the "torso line" TR from the "hip point" HP is 300 mm. The distance from the torso line TR passing through the hip point HP at a position of 300 mm to the left and right, and at a position of 300 mm, and the distance to the rear at a right angle.
The first intersection 8a with the position of 55 mm, and 153,173,17 to the left and right of the seating center line BC of the seat back 6, respectively.
The second to fourth intersections 8b, 8c, 8d with the position of 300 mm, which is the same as the position of 6 mm, and the dimension of the rearward direction of the torso line TR passing through the hip point HP at a position substantially 58,32,37 mm rearward. And a straight line 1W connecting the first and second intersections 8a and 8b, and the third and fourth intersections 8
A straight line 1X connecting c and 8d, a curve 1Y having a curvature R1 of 140 mm including the first and third intersections 8a and 8c with the rear side of the seatback 6 as a center point, and the rear of the seatback 6 also Second and fourth intersections 8b, 8d with the side as the center point
Is located within an area 1A (hatched display) surrounded by a curve 1Z having a curvature R2 of 180 mm including.

In FIG. 1, reference numeral 14 is a pan frame made of FRP material that constitutes the back surface of the seat back 6 and the lower surface of the seat cushion 7, and a pipe-shaped frame 9 is supported in a loop on the front surface of the pan frame 14. Thin side frames 10 and 11 are arranged in front of the frame 9.

The seat back 6 has a structure in which the frame 9 and the side frames 10 and 11 are wrapped with a pad material 12 made of a polyurethane foam material and covered with a skin 13 such as cloth.

As the position of the frame 9, as shown in FIG. 2, the dimension from the hip point HP to the upper side along the torso line TR is at a position of 300 mm, and 191 mm to the left and right of the seating center line BC of the seat back 6, respectively. And also at a position of 300 mm and at a position approximately 55 mm rearward from the torso line TR passing through the hip point HP at a position of 55 mm as a center.

As shown in FIG. 2, the second support portion 2 has a dimension of 30 from the hip point HP to the upper side along the torso line TR.
At the position of 0 mm, the dimension of the torso line TR passing through the hip point HP at a position approximately 114 mm and 120 mm rearward from the torso line TR, and the position of 8 mm to the left and right of the seating center line BC, respectively. Two intersections 19a, 19b and the 3rd and 4th intersections 19c, 19d (not shown) are connected to the lines 2W, 2X, 2Y (not shown), 2Z so that they are located within the area 2A (hatched display). There is.

Specifically, the first support portion 1 includes, as shown in FIGS. 3 and 4, the bent portion 10a in which the side frame 10 is bulged toward the outer skin 13 and the bracket 10b fixed to the bent portion 10a. When,
It is composed of a bent portion 10a and a pad material 12 arranged on the front side of the bracket 10b. In other words, the original thickness of the pad material 12 (for example, 20 mm) is 25% (5 mm for 20 mm).
It is set to be 25 kilograms. And
The portion of the pad material 12 other than the first support portion 1 is such that the load is 16 to 18 kilograms (for example, plate thickness,
(From the point of view of density).

The second support portion 2 bulges the bread frame 14 toward the outer skin 13 side to narrow the space between the outer skin 13 and the bulging portion of the bread frame 14, thereby reducing the original thickness of the pad material 12 as described above. For example, it is specified by setting it to 20 millimeters and setting the above load to be 25 kilograms.

Although it has been described that the first support portion 1 includes the bent portion 10a and the bracket 10b formed on the side frame 10, and the pad material 12, the present invention is not limited to this. For example, the bulging portion may be formed on the pan frame 14. Alternatively, a spring may be stretched between the frames 9, a bent portion may be formed in the spring, and the bracket may be fixed. Further, a sub-bracket may be installed between the side frames 10 and 11, a bent portion may be formed in the sub-bracket, and the bracket may be fixed.

Also, the figure discloses a sheet S covered with a uniform skin 13,
Alternatively, only the first and second support portions 1 and 2 may be formed and arranged of a hard resin or the like to form the seat back 4, and the seat back 7 may support the seat back 4.

In FIG. 2, reference numeral 6'shown by a broken line along the seat back 6 is another embodiment of the line on the front surface side of the seat back 6, and the shape shown by the solid line is for an automobile such as a race with a large lateral load. It is preferable to use it, and the shape indicated by the broken line is preferably used for a versatile automobile.

Therefore, according to this embodiment, most of the occupant (98% of Japanese according to the measurement results) corresponds to the external auxiliary muscles of the occupant by the first supporting portion and the supporting portion shown in FIG. Will support the hip point HP
The lateral movement of the upper body of the occupant centering around is surely prevented.

〔effect〕

As described above, according to the present invention, the seat back including at least the first support portion that supports the scapulae around the upper body of the occupant and the second support portion that supports the spine around the upper body, and the seat back are provided. The seat cushion is supported, and the first support portion is located at a position of 300 millimeters upward from the hip point along the torso line,
Approximately 55 mm to the rear from the torso line, and to the left and right of the seat back seating center line
The first intersection point of 150 mm and the dimension 300 mm upward from the hip point along the torso line, and the dimension rearward and substantially perpendicular to the torso line is 58, 32, 37 mm and 153, 173, 17 to the left and right from the seating center line of the seat back
A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a rear side of the seat back. A curve having a curvature of 140 mm including the first and third intersections with the center point as a center point, and a curve having a curvature of 180 millimeters including the second and fourth intersection points having the rear side of the seat back as the center point. The second support portion is located 300 mm upward from the hip point along the torso line, and is located in an area surrounded by
Be positioned in an area surrounded by straight sides of 114 mm and 120 mm in a rearward direction at a right angle to the torso line and straight sides of 8 mm to the left and right of the seating center line. Since it is characterized in that, by supporting the upper body of the occupant, the effect of being able to reliably prevent lateral movement is obtained.

[Brief description of drawings]

1 to 4 are views showing an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a first support. FIG. 4 is a perspective view showing a longitudinal section of the part. S: Automotive seat, 1st support portion, 2nd second
Support part, 6 ... Seat back, 7 ... Seat cushion, 8a, 19a ... 1st intersection, 8b, 19b ... 2nd intersection, 8c, 19c
...... 3rd intersection, 8d, 19d …… 4th intersection, 1W, 1X, 2W, 2X, 2Y, 2
Z: straight line, 1W, 1Z: curved line, 1A, 2A: area, HP:
Hip point, TR ... Torso line, BC ... Seating center line.

Claims (1)

[Claims] 1. A first support for supporting the upper part of the occupant's upper body around the shoulder blades
A seat back having at least a second supporting portion that supports the supporting portion and a spine around the upper body, and a seat cushion that supports the seat back. The first supporting portion is located above the hip point along the torso line. At a dimension of 300 mm,
Approximately 55 mm to the rear from the torso line, and to the left and right of the seat back seating center line
The first intersection point of 150 mm and the dimension 300 mm upward from the hip point along the torso line, and the dimension rearward and substantially perpendicular to the torso line is 58, 32, 37 mm and 153, 173, 17 to the left and right from the seating center line of the seat back
A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a rear side of the seat back. A curve having a curvature of 140 millimeters including the first and third intersections with the center point as a center point, and a curve having a curvature of 180 millimeters including the second and fourth intersection points having a center point on the rear side of the seat back. The second support portion is located 300 mm upward from the hip point along the torso line, and is located in an area surrounded by
Be positioned in an area surrounded by straight sides of 114 mm and 120 mm in a rearward direction at a right angle to the torso line and straight sides of 8 mm to the left and right of the seating center line. An automobile seat characterized by