JPH0451636Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to a vehicle seat, and particularly to a structure that prevents the generation of abnormal noise due to relative misalignment between a seat pad and a skin material covering its surface.

<<Prior Art>> Generally, a vehicle seat has a structure in which a pad is arranged on a frame, the surface of the pad is covered with a skin material, and the end of the skin material is clipped to an invisible part of the frame.

For example, FIG. 3 shows a conventional seat cushion.
It consists of a cushion pad 2 installed on the top surface of the frame 1, and a skin material 3 that covers the surface of the cushion pad 2. A bag-shaped draw cloth 4 is sewn integrally in the center of the skin material 3, and this The cloth 4 is drawn into the slit 2 formed in the center of the cushion pad 2 and fixed by fixing the hook 7 between the wire 5 passed through the slit 2 and the S spring 6 suspended from the frame 1. Further, the end of the skin material 3 is drawn into the lower part of the frame 1 and fixed to the frame 1 by hooks 7.

Functionally, in the seat cushion described above, the central portion is the seat surface portion A, and the higher portions on the left and right sides thereof are the side support portions B.

By sitting on the seat surface A, the cushion pad 2 is elastically contracted and curved downward by the deflection of the S spring 6, thereby providing appropriate cushioning properties.

<<Problem to be solved by the invention>> However, the seat cushion with this structure has the disadvantage that it tends to generate abnormal noise.

That is, the skin material 3 repeatedly tenses and relaxes toward the center of the seat surface each time the seat surface portion A expands and contracts, and each time the skin material 3 located at the side support portion B is subjected to a tensile force directed inwardly and outwardly. Since it is taking up the slack, it repeats the movement according to this tensile force.

On the other hand, no load is directly applied to the side support portion B of the cushion pad 2, and the amount of inward movement due to increase or decrease in load is small, resulting in repeated movement relative to the skin material 3. This causes a scraping sound accompanied by friction between the two.

This produced a so-called "kiyutsu, kiyutsu" abnormal noise, and was the main cause of low-grade noise.

This type of low-level noise results in unpleasant noise and a lack of luxury, resulting in a lower product value.

This invention solves the above-mentioned drawbacks, and by moving the pad in accordance with the movement of the skin material, it eliminates the scraping sound caused by the relative misalignment between the two and prevents the generation of abnormal noise. The present invention provides a vehicle seat structure.

<Means for Solving the Problems> In order to achieve the above object, this invention provides a vehicle seat in which the outer periphery of the seat pad is covered with a skin material and the end of the skin material is fixed to the frame. Slits that open and close according to the movement of the skin material are formed on both sides, and a spring body is integrally built into the interior of the seat pad to bias the slit in a direction that always closes the slit.

<<Operation>> According to the above configuration, the slit is always kept closed by the spring body. As the skin material moves due to the applied load, the slit opens against the spring pressure of the spring body and closes due to the spring pressure.As a result, the surface of the seat pad follows the movement of the skin material. to prevent scraping noise caused by friction.

<<Example>> Hereinafter, an example of this invention will be described in detail using the drawings.

Figures 1a and 1b show a first embodiment of this invention.

Note that the same reference numerals are given to parts that are the same as or corresponding to those in the conventional art, and only different parts are given different numerals in the explanation.

The figure shows an embodiment in which this invention is applied to a seat pad.The seat pad has a frame 1, a cushion pad 2 installed on the top surface of the frame 1, and a surface of the cushion pad 2, which is almost the same as the conventional one. It consists of a covering skin material 3, and a bag-shaped draw cloth 4 is sewn integrally in the center of the cover material 3, and this draw cloth 4 is drawn into a slit 2 formed in the center of the cushion pad 2. It is fixed by fixing a hook 7 between the wire 5 inserted therein and the S spring 6 suspended on the frame 1, and the end of the skin material 3 is drawn into the lower part of the frame 1, and the frame 1
is fixed by hook 7.

Functionally, in the seat cushion described above, the central portion is the seat surface portion A, and the higher portions on the left and right sides thereof are the side support portions B.

Side support part B of the cushion pad 2
There are 10 vertical slits in the top part of the
is formed, and the side support part B is connected to the inner part B1.
and an outer portion B2 (although only one side is shown in the figure, they are formed symmetrically on the left and right sides).

The inside of the slit 10 is expanded into a horseshoe shape, and a spring body 11 also having a horseshoe-shaped cross section is integrated in advance by insert molding inside the expanded portion 1a. This horseshoe-shaped spring body 11 is made of chip urethane, and is inserted integrally with the upper opening in a biased state so as to always close it, so that the slit 10 is always biased in the direction of closing. .

Further, a plurality of insertion holes 11a are opened at the bottom of the spring body 11.

Corresponding to the slits 10 of the cushion pad 2, a draw cloth 12 is integrally sewn on the back side of the skin material 3 located at the top of the side support part B, and a wire is inserted into the inside of the draw cloth 12. 13 and a bracket 14 integrated into the upper part of the frame 1 are connected by a hook 7, and the skin material 3 is also connected to the frame 1 at this location.

In the above configuration, when no load is applied, the slit 10 is in a closed state as shown in FIG. 1a.

From this state, when a person sits on the seat A,
The seat surface portion A of the cushion pad 2 elastically contracts, and the S spring holding the lower surface of the seat surface portion A also bends downward. As a result, the inner part B1 of the upholstery 3 is pulled toward the seat A side while pulling the draw cloth 12 inward, and the inner part B1 of the cushion pad 2 that is in contact with this is pulled by the spring body 11. As shown in FIG. 1b, the slit 10 is elastically deformed and tilted inward, that is, toward the seat surface A side, as shown in FIG. 1B, against the spring pressure.

By this action, the cushion pad 2
and the inner part B1 of the skin material 3, which move and deform integrally without causing any relative deviation,
Prevents abnormal noises caused by misalignment.

Next, when the load is removed, the skin material 3 returns to its original position by the amount of inward tension corresponding to the compression recovery of the cushion pad 2, and the inner part B1 of the inner pad also recovers from the spring. It is restored to its original position by the spring pressure of the body 11, and the slit 10 is closed.

Therefore, even in this state, no deviation occurs between the cushion pad 2 and the skin material 3, and abnormal noises due to relative deviation between the two are prevented.

FIG. 2 shows a second embodiment of this invention.

In the figure, a slit 20 is formed at the top of the side support portion B of the cushion pad 2 in the same manner as described above, dividing the side support portion B into an inner portion B1 and an outer portion B1.

The innermost part of this slit 20 is widened into a C-shape, and a spring body 21, which is also C-shaped, is integrally buried in the inner wall part of the slit 20. This spring body 2
1. Similar to the above, a pad made of chip urethane or the like is inserted into the cushion pad 2 in a state where it is bent on the side that closes the upper opening.

In addition, in the side support part B, the skin material 3 covering the surface side of the cushion pad 2 is not fixed by any fixing means such as a stretched cloth, as in the conventional case, and the inner part B1 is in a stretched state. While opening the slit 20 wide, the inner part B1 of the cushion pad 2 is tilted so that it can follow the tension of the skin material 3.

Further, when the load is removed and the skin material 3 returns to its original position, the inner portion B1 of the cushion pad 2 elastically recovers to its original position while closing the slit 20 due to the spring pressure of the spring body 21 in the closing direction.

In each of the above embodiments, the spring body is made of chip urethane which is shaped in the direction of contraction and is integrally insert-molded during the foam molding of the cushion pad. However, it is also possible to use another spring material. It can also be configured to be buried later.

Further, in each of the above embodiments, the invention has been applied to a seat cushion, but it goes without saying that it can also be applied to a seat bag in the same manner.

<<Effects of the invention>> As explained in detail using the embodiments above, in the vehicle seat structure according to this invention, the slit is always kept closed by the spring body, and the slit is kept closed as the skin material moves. The slit opens against the spring pressure of the spring body and closes due to the spring pressure.As a result, the surface of the seat pad moves following the movement of the skin material, so the relative relationship between the two There is no misalignment, and generation of abnormal noises such as scraping noise due to this misalignment can be prevented.

Therefore, this invention is useful for enhancing the sense of quality and improving the product value.

[Brief explanation of the drawing]

Figures 1a and 1b show the first embodiment of this invention,
Figure 1 is a sectional view of the main part in a state where no load is applied, b is a sectional view of the main part in a state where a load is applied,
FIG. 2 is a sectional view of a main part showing a second embodiment of this invention, and FIG. 3 is a sectional view of a conventional seat cushion. 1...Cushion frame (frame), 2...
...Cushion pads (seat pads), 3...Skin material, 10, 20...Slit, 11, 21...Spring body, A...Seat surface portion, B...Side support portion.

Claims (1)

[Scope of utility model registration request] In a vehicle seat in which the outer periphery of a seat pad is covered with a skin material and the ends of the skin material are fixed to a frame, slits that open and close according to the movement of the skin material are formed on both sides of the seat pad, and the seat pad A vehicle seat structure, characterized in that a spring body is integrally built into the interior side of the slit to bias the slit in a direction that always closes the slit.