JPH0753494B2 - Car seat - Google Patents

Description

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

[Prior art]

As a conventional automobile seat, for example, JP-A-52-5476
As shown in Japanese Patent No. 1, the seat back has a smooth back and forth portion where an occupant leans back, so that the passenger can get in and out of the seat back easily.

[Problems to be solved by the invention]

However, according to such a conventional technique, the occupant's state may shift upward due to the acceleration G that causes the back to hit the seat back when suddenly starting.

Therefore, according to the present invention, in view of such conventional problems,
The purpose of the present invention is to reliably prevent the occupant's shoulders from moving upward and to support the condition.

[Means for solving problems]

In order to achieve such an object, the present invention comprises a seat back having at least first to third support parts capable of supporting the rhomboid muscles and shoulder blades of an occupant, and a seat cushion supporting the seat back, The first support portion is located in the range of 234 mm behind the vertical line passing through the hip point on the seating center line of the seat back and 262 mm above the horizontal line passing through the hip point and perpendicular to the seating center line. 239, 234, and 229, respectively, behind the first intersection and the vertical line that passes through the hip point at the seating center line.
The second to fourth intersections at a position of millimeters and having a dimension above the horizontal line passing through the hip point and orthogonal to the seating center line at 260, 249, and 251 millimeters, respectively, and A straight line connecting the intersection and the second intersection,
Similarly, it is located in an area surrounded by a straight line connecting the third intersection and the fourth intersection, a straight line connecting the first intersection and the fourth intersection, and a straight line connecting the second intersection and the third intersection, 2 The supporting portion is located within a range of 282 mm behind the vertical line passing through the hip point at the seating center line of the seat back and 323 mm above the horizontal line perpendicular to the seating center line passing through the hip point. 286, 280, 275 behind the vertical line passing through the hip point at the first intersection and the seating center line, respectively.
A second to a fourth intersection point at a position of 321, 306, 308 millimeters above the horizontal line passing through the hip point and perpendicular to the seating center line. A straight line connecting the first intersection and the second intersection, a straight line similarly connecting the third intersection and the fourth intersection, and a first intersection, a fourth intersection, a second intersection and a second intersection with the front side of the seat back as a center point. It is located in an area surrounded by a curve having a curvature of 320 mm including three intersections, and the third support part is 292 mm behind the vertical line passing through the hip point at the seating center line of the seat back. In the range of, the first intersection point that is located 379 mm above the horizontal line passing through the hip point and perpendicular to the seating center line, and the hip point at the seating center line. 298, 296 behind the vertical line passing through
At a position of 291 mm, and having a second to a fourth intersection point at which the dimension above the horizontal line passing through the hip point and perpendicular to the seating center line is 378, 367, 368 mm, respectively, and A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a first intersection and a fourth intersection having a front side of the seat back as a center point, a second intersection, and It is characterized in that it is located within an area surrounded by a curve having a curvature of 320 mm including the third intersection.

[Work]

According to the present invention, since the first to third support portions support the occupant's rhomboid muscles and scapulae because of such a configuration, upward movement of the occupant can be reliably prevented, and pain can occur even during long-time driving. And less fatigue.

〔Example〕

1 to 3 are views showing an embodiment of the present invention, in which reference symbol S is a seat of the present invention, and the seat S is a first support part 1 and a first support part 1 capable of supporting the back and shoulders of an occupant. The seat back 4 includes at least the second support portion 2 and the third support portion 3, and the seat cushion 5 that supports the seat back 4.

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

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

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

The "torso line" is a back bracket of a "human body model" that has a torso bar, which is a standard bar for measuring the tilt angle of the back pan (curved plate that has the shape of the back of the body) supported by the back pan. A line (axial line of the body) represented when it comes into contact with the stopper, and a rearward (A direction) inclination angle with respect to the vertical line of the line is called a 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 horizontal line that is perpendicular to the seating center line BC.
The area that supports the upper body of the occupant is specified by the fourth intersection. 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.

At the seating center line of the seat back 4 (cross-sectional position in FIG. 1), the first support portion 1 is located behind the vertical line SC passing through the hip point HP (direction of arrow A), as shown in FIG.
At the position of 234 mm, first with the position of 262 mm above the horizontal line SH passing through the hip point HP.
239,234,229 behind the vertical line SC passing through the hip point HP at the intersection 1a and the seating center line SS, respectively.
The second to fourth intersections 1b, 1c, 1d with the position of mm and the position of 260,249,251 mm above the horizontal line SH which also passes through the hip point HP are straight lines 1W, 1X, 1Y, 1 respectively.
It is located in area 1A (hatched display) surrounded by Z.

The second support part 2 has a first intersection 2a at a position of 282 mm behind the vertical line SC and a position of 323 mm above the horizontal line SH, and also at a position of 286,280,275 mm behind the vertical line SC, respectively. Similarly, above the horizontal line SH, there are second to fourth intersections 2b, 2c, 2d with positions of 321, 306, 308 millimeters, and a straight line 2W connecting the first and second intersections 2a, 2b, and also the third and third intersections. A curvature R1 of 320 mm including a straight line 2Y connecting the four intersections 2c and 2d, the first and fourth intersections 2a and 2d, and the second and third intersections 2b and 2c with the front side of the seat back 4 as the center point. , R2 is located within an area 2A (hatched display) surrounded by the curves 2Z and 2X.

The third support portion 3 is located at a position 292 mm behind the vertical line SC and at a first intersection 3a with a position 379 mm above the horizontal line SH passing through the hip point HP and also at the seating center line SS. Positions 298,296,291 mm behind the vertical line SC passing through the hip point HP and a horizontal line SH passing through the hip point HP as well.
The second to fourth intersections 3b, 3c, 3d with the positions of 378, 367, 368 millimeters above are provided, and the first and second intersections 3a, 3
A straight line 3W connecting between b, a straight line 3Y similarly connecting between the third and fourth intersections 3c, 3d, and first and fourth intersections 3a, 3d, second and third with the front side of the seat back 4 as a center point It is located within an area 3A (hatched display) surrounded by curves 3Z and 3X having curvatures R1 and R2 of 320 mm including the third intersections 3b and 3c.

In FIG. 1, reference numeral 11 is a pan frame made of FRP material that constitutes the back surface of the seat back 4 and the lower surface of the seat cushion 5, and a pipe-shaped frame 6 is supported in a loop shape on the front surface of the pan frame 11. In front of the frame 6, thin side frames 7 and 8 are arranged.

In FIG. 2, SC3 is a reference vertical line parallel to the vertical line SC and 300 mm behind the vertical line SC, and SH2 is a reference vertical line parallel to the horizontal line SH and 200 mm above the horizontal line SH. It is the horizon. Also, the symbol TR in FIG.
Is the torso line.

The sheet S has a configuration in which the frame 6 and the frame 6 are wrapped with a pad material 9 made of a polyurethane foam material and covered with a skin 10 such as cloth.

In FIGS. 1 and 2, reference numeral 4'indicated by a broken line along the seat back 4 is another embodiment of the line on the front surface side of the seat back 4, and the shape indicated by a solid line is a lateral line such as a race. It is preferable to use it for an automobile having a large load, and the shape shown by the broken line 4'is for an automobile having general versatility.

Specifically, the first to third support parts 1 to 3 are pan frames.
As shown in FIG. 3, 11 is a bulging portion bulging toward the skin 10 side.
11a and a pad material 9 arranged on the front side of the bulging portion 11a. That is, the load necessary to bend the original plate thickness (for example, 20 mm) of the pad material 9 by 25% (5 mm when 20 mm) is set to 25 kg. And this first
˜3 The parts of the pad material 9 other than the support parts 1 to 3 may be such that the load is 16 to 18 kg (for example, in terms of plate thickness, density, etc.).

The first to third support portions 1 to 3 are not limited to this description. For example, a spring may be stretched between the frames 6, a bent portion may be formed on the outer spring, and the bracket may be fixed. Further, although the drawing discloses the sheet S covered with the uniform skin 10, a member having a higher hardness than other portions may be used only for the first to third support portions 1 to 3.

Therefore, according to this embodiment, the first to third support portions 1 to 3 are
According to most of the passengers (98% of Japanese according to the measurement results)
Since the seat back supports the upper half of the body, especially the rhombus and the scapula, the shoulder is prevented from moving, the contact area is increased, and a support structure without local contact is obtained.

[Effect]

As described above, according to the present invention, the seat back including at least the first to third support portions capable of supporting the rhomboid muscles and the shoulder blades of the occupant, and the seat cushion supporting the seat back. , The first support portion is located in a range of 234 mm behind the vertical line passing through the hip point on the seating center line of the seat back and 262 mm above the horizontal line passing through the hip point and perpendicular to the seating center line. And 239, 234, 229 respectively behind the vertical line passing through the hip point at the seating center line and
The second to fourth intersections at a position of millimeters and having a dimension above the horizontal line passing through the hip point and orthogonal to the seating center line at 260, 249, and 251 millimeters, respectively, and A straight line connecting the intersection and the second intersection,
Similarly, it is located in an area surrounded by a straight line connecting the third intersection and the fourth intersection, a straight line connecting the first intersection and the fourth intersection, and a straight line connecting the second intersection and the third intersection, 2 The supporting portion is located within a range of 282 mm behind the vertical line passing through the hip point at the seating center line of the seat back and 323 mm above the horizontal line perpendicular to the seating center line passing through the hip point. 286, 280, 275 behind the vertical line passing through the hip point at the first intersection and the seating center line, respectively.
A second to a fourth intersection point at a position of 321, 306, 308 millimeters above the horizontal line passing through the hip point and perpendicular to the seating center line. A straight line connecting the first intersection and the second intersection, a straight line similarly connecting the third intersection and the fourth intersection, and a first intersection, a fourth intersection, a second intersection and a second intersection with the front side of the seat back as a center point. It is located in an area surrounded by a curve having a curvature of 320 mm including three intersections, and the third support part is 292 mm behind the vertical line passing through the hip point at the seating center line of the seat back. In the range of, the first intersection point that is located 379 mm above the horizontal line passing through the hip point and perpendicular to the seating center line, and the hip point at the seating center line. 298, 296 behind the vertical line passing through
At a position of 291 mm, and having a second to a fourth intersection point at which the dimension above the horizontal line passing through the hip point and perpendicular to the seating center line is 378, 367, 368 mm, respectively, and A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a first intersection and a fourth intersection having a front side of the seat back as a center point, a second intersection, and Since it is located in the area surrounded by the curve having a curvature of 320 mm including the third intersection, it is possible to reliably prevent the occupant's back from shifting upward, and to accelerate suddenly when starting. Even if G is suddenly applied to the back, it is possible to reliably support and evenly contact the body of the occupant so that the so-called seating area can be expanded.

[Brief description of drawings]

1 to 3 are views showing an embodiment of the present invention, in which FIG. 1 is a vertical sectional view, FIG. 2 is an enlarged view of an essential part of FIG. 1, and FIG. 3 is a vertical sectional view of a supporting portion. It is a figure. S: Automotive seat, 1st support portion, 2nd second
Support part, 3 ... Third support part, 4 ... Seat back, 5 ...
… Seat cushion, HP… Hip point, SC… Vertical line, SH… Horizontal line.

Claims (1)

[Claims] 1. A first device capable of supporting the rhomboid muscles and shoulder blades of an occupant.
The seat back includes at least a support portion to a third support portion, and a seat cushion that supports the seat back. The first support portion is located 234 behind the vertical line passing through the hip point at the seating center line of the seat back. In the range of millimeters, a first intersection point 262 mm above the horizontal line passing through the hip point and perpendicular to the seating center line, and 239 behind the vertical line passing through the hip point at the seating center line. , 234, 229
The second to fourth intersections at a position of millimeters and having a dimension above the horizontal line passing through the hip point and orthogonal to the seating center line at 260, 249, and 251 millimeters, respectively, and A straight line connecting the intersection and the second intersection,
Similarly, it is located in an area surrounded by a straight line connecting the third intersection and the fourth intersection, a straight line connecting the first intersection and the fourth intersection, and a straight line connecting the second intersection and the third intersection, 2 The supporting portion is located within a range of 282 mm behind the vertical line passing through the hip point at the seating center line of the seat back and 323 mm above the horizontal line perpendicular to the seating center line passing through the hip point. 286, 280, 275 behind the vertical line passing through the hip point at the first intersection and the seating center line, respectively.
A second to a fourth intersection point at a position of 321, 306, 308 millimeters above the horizontal line passing through the hip point and perpendicular to the seating center line. A straight line connecting the first intersection and the second intersection, a straight line similarly connecting the third intersection and the fourth intersection, and a first intersection, a fourth intersection, a second intersection and a second intersection with the front side of the seat back as a center point. It is located in an area surrounded by a curve having a curvature of 320 mm including three intersections, and the third support part is 292 mm behind the vertical line passing through the hip point at the seating center line of the seat back. In the range of, the first intersection point that is located 379 mm above the horizontal line passing through the hip point and perpendicular to the seating center line, and the hip point at the seating center line. 298, 296 behind the vertical line passing through
At a position of 291 mm, and having a second to a fourth intersection point at which the dimension above the horizontal line passing through the hip point and perpendicular to the seating center line is 378, 367, 368 mm, respectively, and A straight line connecting the first intersection and the second intersection, a straight line connecting the third intersection and the fourth intersection, and a first intersection and a fourth intersection having a front side of the seat back as a center point, a second intersection, and A vehicle seat characterized by being positioned within an area surrounded by a curve having a curvature of 320 mm including a third intersection.