JPH0757581B2 - Car seat - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automobile seat, and more particularly to an automobile seat that supports the hips and thighs of an occupant and 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.

The seat cushion of this automobile seat is substantially flat.

[Problems to be solved by the invention]

However, according to such a conventional example, since the waist and thigh of the occupant are not always supported structurally, there is a problem in that the occupant may shift forward and the driving posture may collapse.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and provides a vehicle seat that can prevent the occupant's waist and thighs from being displaced forward and ensure a good driving posture. With the goal.

[Means for solving problems]

In order to achieve the above object, the present invention provides a seat back, and a seat including at least a first support part, a second support part, and a third support part that support the seat back and support the waist and thighs of an occupant. The first support portion is in a range of 80 mm on each side centering on the seating center line, is 112 mm forward of a vertical line passing through the hip point, and is more than a horizontal line passing through the hip point. The first intersection point, which is located 44 mm below, and 108, 103, 93, 91, 106 mm ahead of the vertical line passing through the hip point, and below the horizontal line passing through the hip point. In the area surrounded by the straight lines connecting the first to sixth intersections with the second to sixth intersections at 41, 49, 50, 56 and 54 millimeters, respectively. So as to location, the second support portion is in the range of left and right each 80 mm around the seating center line forward of the vertical line passing through the hip point
It is located at 158 millimeters and is located at a first intersection point 2 millimeters above the horizontal line passing through the hip point and 150, 138, 145 millimeters forward of the vertical line also passing through the hip point. 1 above the horizontal line passing through the hip points
5 to 8 millimeters, and second to fourth intersections that are located 4 millimeters downward, and are located within an area surrounded by straight lines connecting the first to fourth intersections, respectively. The support portion is located within a range of 80 mm to the left and right centering on the seating center line, located 50 mm behind the vertical line passing through the hip point, and 83 mm below the horizontal line passing through the hip point. At the position of 50, 65, 64 mm behind the vertical line passing through the first intersection point and the hip point,
77 and 8 below the horizontal line passing through the hip points
It is characterized in that it is located in an area surrounded by straight lines connecting the first to fourth intersections with the second to fourth intersections at positions of 0 and 86 mm.

[Work]

Since the present invention has such a configuration, the first support portion, the second
The insides of both thighs of the occupant are restrained by the support portion and the third support portion, and the forward displacement is prevented.

〔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 which supports the upper body, waist and thighs of an occupant, and the seat S is a seat back 6 When,
A seat cushion 7 having at least a first support portion 1, a second support portion 3 and a third support portion 3 for supporting the seat back 6 and for supporting the waist and thighs of the occupant.

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 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 that supports the lower body of the occupant by the first to fourth intersections. Specifying this area means that the lower half of the occupant can be held in that area even if the entire seat cushion is not a so-called seat cushion.

The first support portion 1 is a vertical line passing through the hip point HP as shown in FIG. 1 within a range of 80 mm on each side centering on the seating center line (corresponding to the cross section of FIG. 1).
The first intersection 15a between the position 112 mm in front of SS (direction of arrow B) and the position 44 mm below the horizontal line SH passing through the hip point HP, and also in front of the vertical line SS also passing through the hip point HP. 108,103,93,91,
Straight lines connecting the second to sixth intersections 15b, 15c, 15d, 15e, 15f at the position of 106 mm and the positions of 41, 49, 50, 56, 54 mm below the horizontal line SH passing through the hip point HP, respectively. Area 1 surrounded by 15U, 15V, 15W, 15X, 15Y, 15Z
It is located within A (hatching display).

The second support portions 2 are left and right about the seating center line.
In the range of 80 mm, the first intersection point 16a between the position 158 mm in front of the vertical line SS passing through the hip point HP and the position 2 mm above the horizontal line SH passing through the hip point HP, also the hip point HP
The second to fourth intersections 16b, 16c, 16d at positions 150,138,145 mm forward of the vertical line SS passing through and 15,8 mm above the horizontal line SH passing the hip point HP, and 4 mm downwardly respectively. Straight line connecting each of the 16W, 1
Area 2A surrounded by 6X, 16Y, 16Z (hatched display)
It is located inside.

The third support portion 3 is arranged on each of the left and right sides about the seating center line.
In the range of millimeters, the first intersection point 17a between a position 50 mm behind the vertical line SS passing through the hip point HP and a position 83 mm below the horizontal line SH passing through the hip point HP, and the hip point HP also Second to second intersection points 17b, which are respectively 50,65,64 mm behind the vertical line SS passing through and 77,80,86 mm below the horizontal line SH passing through the hip point HP.
17c and 17d are located in an area 3A (hatched display) surrounded by straight lines 17W, 17X, 17Y and 17Z, respectively.

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 S includes the frame 9 and side frames 10,1.
1 and 2 are wrapped with a pad material 12 made of a polyurethane foam material and covered with a skin 13 such as cloth.

In FIG. 2, the reference numeral 7'shown by a broken line along the seat cushion 7 is another embodiment of the line on the front surface side of the seat cushion 7, and the shape shown by the solid line is for an automobile such as a race having 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.

Specifically, the first to third support parts 1 to 3 are pan frames.
As shown in FIG. 3, bulge 14 toward the skin 13 side
The portion of the pad material 12 between the bulging portion 14a and the bulging portion 14a of the pan frame 14 is narrowed to form the original thickness of the pad material 12 (for example,
25 mm is the load required to deflect 25 percent (5 mm for 20 mm)
It is set to be kilograms. Further, the parts of the pad material 12 other than the first to third support parts 1 to 3 may be such that the load is 16 to 18 kg (for example, in terms of plate thickness and density).

Also, the figure discloses a sheet S covered with a uniform skin 13,
Only the first, second and third support portions 1, 2, 3 may be made of a member having a higher hardness than other portions.

Therefore, according to the present embodiment, most of the occupants (the result of the measurement shows that it is 98
Will be restraining the inside of both thighs,
This prevents the hips and thighs from slipping forward and prevents the driver from losing his / her driving posture.

[Effect]

As described above, according to the present invention, the seat back and the first support portion, the second support portion, and the third support portion that support the seat back and that support the waist and thighs of the occupant are provided. The seat cushion includes at least a seat cushion, and the first support portion is located within a range of 80 mm on each side of the seating center line and 112 mm ahead of a vertical line passing through the hip point, A first intersection point 44 mm below the horizontal line passing through and a horizontal line passing through the hip point at positions 108, 103, 93, 91 and 106 mm forward of the vertical line passing through the hip point. The second to sixth intersections at the positions of 41, 49, 50, 56, and 54 millimeters below each other, and the edges surrounded by straight lines connecting the first to sixth intersections, respectively. The second support part should be located in front of the vertical line passing through the hip point within the range of 80 mm on each side centering on the seating center line.
It is located at 158 millimeters and is located at a first intersection point 2 millimeters above the horizontal line passing through the hip point and 150, 138, 145 millimeters forward of the vertical line also passing through the hip point. 1 above the horizontal line passing through the hip points
5 to 8 millimeters, and second to fourth intersections that are located 4 millimeters downward, and are located within an area surrounded by straight lines connecting the first to fourth intersections, respectively. The support portion is located within a range of 80 mm to the left and right around the seating center line, is located 50 mm behind the vertical line passing through the hip point, and is 83 mm below the horizontal line passing through the hip point. And at the positions of 50, 65, and 64 mm behind the vertical line passing through the hip point and below the horizontal line passing through the hip point.
It is characterized in that it has second to fourth intersections at positions of 7, 80, and 86 millimeters, and is located in an area surrounded by straight lines connecting the first to fourth intersections, respectively. Therefore, by restraining the insides of both thighs of the occupant, it is possible to prevent the occupant's hips and thighs from moving forward and to obtain a good driving posture. To be

[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, 6 ... Seat back, 7 ...
… Seat cushions, 1A, 2A, 3A …… Areas, 15a, 16a,
17a …… first intersection, 15b, 16b, 17b …… second intersection, 15c, 1
6c, 17c ... 3rd intersection, 15d ... 4th intersection, 15e ... 5th
Intersection, 15f ... 6th intersection, HP ... Hip point, SS ...
… Vertical line, SH… horizontal line.

Claims (1)

[Claims] 1. A seat cushion, comprising: a seat back; and a seat cushion having at least a first support portion, a second support portion, and a third support portion that support the seat back and support a waist and a thigh of an occupant. Each of the first support portions has a right and left 80 centered on the seating center line.
In the range of millimeters, at a position 112 mm ahead of the vertical line passing through the hip point and at a position 44 mm below the horizontal line passing through the hip point, and a vertical line passing through the hip point as well. And the second to sixth intersections, which are located 108 mm, 103 mm, 93 mm, 91 mm, and 106 mm ahead of each other and are 41 mm, 49 mm, 50 mm, 56 mm, and 54 mm below the horizontal line passing through the hip point. And is located in an area surrounded by straight lines connecting the first to sixth intersections, respectively, and the second support portion is in the range of 80 millimeters to the left and right about the seating center line, At a position 158 mm forward of the vertical line passing through the hip point and at a position 2 mm above the horizontal line passing through the hip point, and the same as above. 150, 138, and 145 mm forward of the vertical line passing through the hip point, and 1 each above the horizontal line passing through the hip point.
5 to 8 millimeters, and second to fourth intersections that are located 4 millimeters downward, and are located within an area surrounded by straight lines connecting the first to fourth intersections, respectively. The support portion is in the range of 80 mm to the left and right centering on the seating center line, is located 50 mm behind the vertical line passing through the hip point, and is 83 mm below the horizontal line passing through the hip point. Position 50, 65, 64 mm behind the vertical line passing through the hip point and the horizontal line passing through the hip point, respectively.
77, 80, 86 mm and the second to fourth intersections, and is located in an area surrounded by straight lines connecting the first to fourth intersections, respectively. Automotive seat.