JPH0420278Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used for automobile seats.
This invention relates to improvements in air mats used in support devices such as thigh supports and lumbar support devices disposed in seats.

(Prior Art) Conventional air mats for support devices for automobile seats include those shown in FIG. 6 and those shown in FIG. 9.

The conventional air mat, which is also shown in a plan view in FIG.
Both left and right side surfaces 3, 3' are formed in a bellows shape, and the front surface 2 is expanded and expanded by pressurizing air into the main body 1 through an air supply/exhaust pipe 4 provided in the main body 1.

FIG. 8 shows a CC cross section in the expanded state.

Moreover, since the front surface 2 is formed of the bellows 2a having a uniform width, the height of the front surface 2 is kept equal throughout.

In addition, by discharging the air inside the main body 1 through the air supply and exhaust pipe 4, the bellows 2a on the front surface 2 and the side surfaces 3,
3' bellows 3a, 3a' contract respectively and the front surface 2
height decreases.

A CC cross section of this form is shown in FIG.

Such an air mat is buried in the front bend or back part of a seat pad to function as a thigh support device, a side support device, and a lumbar support device for a vehicle seat.

FIGS. 10 and 11 show a case in which the air mat is embedded in the front part of the bent portion of the seat cushion pad 5 to function as a thigh support device.

Figure 10 shows seat cushion 6 of a vehicle seat.
2 is a perspective view of the seat cushion 6, in which the air mat main body 1 is buried in the front part of the bending part of the seat cushion pad 5 forming the seat cushion 6, and the seat cushion 6 is expanded and contracted. The height of the front bending part 6a is adjusted to provide good support for the thighs.

However, the air mat constructed as described above has a problem in that the legs of the seated person open when the air mat main body 1 is inflated to increase the height of the bent-over front portion 6a.

This is shown by the imaginary line in FIG.

That is, when no external pressure is applied to the air mat main body 1, the height of the front surface 2 of the air mat body 1 is formed so as to be the same height due to the uniform pressure of the air, and the height can be adjusted. Air mat main body 1
upper seat cushion pad 5 and skin 7
The force required to push up the air mat body 1 is maximum at both left and right ends of the air mat body 1 and minimum at the center due to the tension of the skin 7. In FIG. 11, the direction of the arrow is the direction of tension in the skin 7.

From this, when the air mat main body 1 is inflated and the upper seat cushion pad 5 and skin 7 are expanded upward, the amount of bulge in the central part becomes maximum as shown by the imaginary line in the figure, and the bending front part 6
There was a problem in that the legs 8 of the person seated on A were spread apart, making it difficult to obtain a good sense of support.

Another type of air mat used in the support device is shown in FIG.

This is made by providing partitions 9 at predetermined positions on the left and right sides of the air mat body 1 to make it easier for the thighs to sit.However, since the front surface 10 and side surfaces 11 are fixed and do not expand in the vertical direction, the absolute amount of inflation is limited. There was a problem that the amount was small and I could not get a good feeling of support.

(Problem to be solved by the invention) The problem to be solved by the invention is that the above-mentioned conventional air mat used in a support device has uneven bulge or absolute amount of bulge in the support part. The aim is to solve this problem by improving the structure of the air mat.

(Means for Solving the Problems) The present invention to achieve the above-mentioned purpose consists of the following:
It is characterized in that it is provided with an enlarged portion that expands upward in an enlarged manner with respect to the central portion.

(Function) Therefore, when air is injected into the air mat main body to inflate it, the enlarged portions on the left and right sides expand by a large amount with respect to the center portion. However, as mentioned above, the maximum force required to push up the seat cushion pad and the skin is applied to these left and right enlarged parts, but since the amount of bulge is large relative to the central front part,
Push up the air mat body with approximately uniform pressure.

(Example) An example of the present invention will be described based on FIGS. 1 to 5.

Figures 1 and 2 show an air mat body A that is long in the left and right direction and used in the present invention. A supply/exhaust pipe 4 for supplying and discharging air is connected to the center thereof. In the figure, 11 is the top surface of the air mat main body A, 12 is the front surface, 13 and 13' are the side surfaces, 14 is the bottom surface, and 15 is the rear surface, and the top surface 11 side is on the skin 7 side.
They are arranged in the seat cushion pads 5, 5' so that the front surfaces 12 are respectively located on the front side of the seat. In Figure 1, A is the front 12
This figure shows folds provided on both sides 13 and 13', and these folds A are formed in large shapes upwards on the left and right sides of the front surface 12, and by injecting air into the air mat body A, the left and right sides are folded. It expands upward in an enlarged manner, and the enlarged portions are defined as enlarged parts a and a', and the area between the enlarged parts a and a' is defined as a central part b. Therefore, the enlarged parts a and a' expand upwardly by injecting air into the central part b, but when the air is discharged, the enlarged parts a and a' expand as shown in FIG. It contracts in the same plane as the central part b.

In addition, in the figure, B and B indicate the fused portion where the top surface 11 and the bottom surface 14 are fused together by high frequency. The fabric forming the front surface 12 is the second fabric.
Fold as shown.

FIG. 3 shows the air mat main body A in a contracted state when the air mat of the present invention is used in a thigh support device for supporting the thigh as shown in FIG. 10.

When air is injected into the air mat main body A, the upper surface of the seat cushion is deformed as shown by the two-dot chain line. That is, the central portion b of the air mat main body A shown in FIG. 1 is the same as that shown in FIG.
a' bulges out against the tension of the skin 7, as shown in FIG.

Therefore, the thigh support portion of the seat cushion bulges upward in a plane.

In FIG. 3, 5 and 5' in the figure are seat cushion pads, and these pads 5 and 5' are grooves 5a and 5.
It is divided into upper and lower halves by a. 8, 8 indicates the legs of the seated person.

(Effects) According to the present invention, the enlarged portions provided on the left and right sides of the horizontally long bag-shaped air mat body are larger than the central portion, so the enlarged portions on the left and right are larger than the central portion. Although it is subjected to strong tension of the epidermis, it expands without succumbing to such tension. Therefore, unlike the conventional product, the amount of expansion at the center does not become larger than at both the left and right end portions, and the problems of the conventional product can be eliminated. Therefore, the air mat of the present invention can be effectively used in thigh support devices, lumbar support devices, side support devices, etc. of automobile seats.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention,
Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a cross-sectional view showing the state of use, and Fig. 4 is - in Fig. 1.
A sectional view along the line, Figure 5 is a sectional view along the same line, and Figures 6 to 11 show conventional products.
Figure 6 is its plan view, Figure 7 is C in Figure 6.
8 is a sectional view of the same expanded state, FIG. 9 is a sectional view of another conventional product, and FIGS. 10 and 11 are of the conventional product shown in FIG. 6. 10 is a perspective view thereof, and FIG. 11 is a sectional view taken along the line - in FIG. 10. In the figure, A is the air mat main body, a, a' are enlarged parts,
b indicates the central portion, respectively.

Claims (1)

[Scope of claim for utility model registration]
In the automobile seat disposed within a seat cushion pad, the seat cushion pad is covered with a skin, and the skin is fixed at a lower portion of the seat cushion pad in the longitudinal direction of the air mat main body, comprising: An automobile seat characterized in that an air mat body is provided with enlarged portions on the left and right sides thereof that expand upwardly from the center portion by injecting air.