JPH058000Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is a seat installed in automobiles, etc.
In particular, the present invention relates to a seat structure in which a seat pad is covered with a bag-shaped skin material.

<<Prior Art>> Seats installed in automobiles and the like generally consist of a seat pad, a seat pad, a skin material that covers the surface of the seat pad, and a frame that holds the seat pad.

The skin material is formed into a bag shape by sewing each part of the sheet cut in advance, and then covers the top surface and four sides of the seat pad, and the end portion of the skin material is secured to the frame side with a clip such as a hook ring. , the seat pad is inserted between the skin material and the frame.

In addition, a draw cloth is attached to the back side of the main part of the skin material by sewing, etc., and this is passed through a slit provided in the seat pad, and the terminal part of the draw cloth is attached to an S spring etc. suspended on the frame side. By locking, the seat pad may be fixed to the frame and the skin material may be drawn into the seat pad.

《Problems to be solved by the invention》 By the way, in the case of such a seat structure,
The seat pad is covered with a skin material, but since the two members are simply in contact with each other, for example, when the load is applied when sitting on the seat or when that load moves, the relative distance between the seat pad and the skin material may occur at the side support part of the seat. There was a shift in the position, and low-level noise such as scraping was occurring. This is because the skin material is more difficult to stretch than the seat pad, which tends to shrink and deform, so the skin material cannot follow the deformation of the seat pad, and there is a limit to how strong the tension of the skin material can be during assembly.
This is also because there are cases where it is desired to give a sense of luxury by giving the skin material a certain degree of slack in the design.

On the other hand, as a method to prevent such low-level noise, adhesive is interposed between the seat pad and the skin material in the assembly process to partially join them. Even if they are joined together, not only will it not be possible to completely eliminate the rubbing noise as described above, but the adhesive may also adhere to the surface of the skin material, and the position of the skin material may be adjusted after it has been joined. It was also unfavorable from the point of view of workability, as it would disappear.

As a result of various studies on this problem, the present applicant has found that by imparting elasticity to the skin material, it is possible to sufficiently prevent the rubbing noise caused by the relative misalignment between the skin material and the seat pad. This led me to this idea.

<Means for Solving the Problems> In other words, the present invention provides a seat structure in which a separate seat pad is covered with a bag-shaped skin material, in which the skin covers the side support portion of the seat pad. The gist is that the side part of the material is integrally provided with a band-shaped elastic part that can be freely expanded and contracted.

<<Function>> According to the above structure, since the skin material is sufficiently elasticized by the elastic parts of the side parts, it easily follows the contraction and deformation of the seat pad due to the load of the occupant or the movement of the load, and the seat pad The relative deviation between the This prevents low-grade noise such as rubbing noise caused by relative misalignment between the seat pad and the skin material.

<<Example>> Hereinafter, the seat structure of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing a seat cushion to which the present invention is applied.

The seat cushion 1 shown in the figure is broadly composed of a metal frame 2, a seat pad 3 held by the frame 2, a skin material 4 covering the seat pad 3, and the like.

The frame 2 has a generally frame shape, and a spring such as an S spring 5 is stretched in the opening, and side wires 6 are connected to both sides.
It is equipped with

In addition, the seat pad 3 is integrally formed with a main part 3a that holds the buttocks, and side support parts 3b that are raised one step on both sides of the main part 3a, and the seat pad 3 as a whole includes a frame 2, an S spring 5, and a side wire. It has a shape that is held at 6.
Further, the sheet pad 3 is made of ordinary foamed urethane foam mainly composed of polyether polyol, polyisocyanate, etc., and has grooves 7 and 8 formed during foam molding. Groove 7
is provided at the boundary between the main part 3a and the side support part 3b, and receives the end of the corresponding joint part 41 of the skin material 4. On the other hand, the groove 8 is provided on the upper outer periphery of the side support part 3b, and receives the base of the corresponding joint part 42 of the skin material 4.

The skin material 4 is made by cutting a sheet material such as woven fabric, knitted fabric, or leather in advance according to each part of the seat cushion.
The cut parts are joined together by sewing, and the entire seat pad 3 is formed into a bag shape large enough to cover the top surface and four side surfaces of the seat pad 3.

More specifically, this skin material 4 includes a main part 4a that covers at least the main part 3a, an inner side part 4b as an elastic part that covers the inner surface and upper surface of the side support part 3b, and an outer part that covers the outside of the side support part 3b. It consists of a side part 4c.
Here, the main part 4a and the outer side part 4c have flat surfaces, but the inner side part 4b has a band-like shape as a whole and a substantially wave-shaped cross section. Further, a band-shaped elastic member 9 is integrally provided on the back surface of the inner side portion 4b, and the elastic member 9 forms the same waveform so that it can freely expand and contract.

In other words, the inner side part 4b is made of the same sheet material as the main part 4a and the outer side part 4c, but the same sheet material is cut wider than usual and cut along the longitudinal direction by means such as heat pressing. The cross section is shaped into a substantially wave-like shape, and in this state, an elastic member 9 such as rubber is bonded to the back surface by welder welding or the like.

When the skin material 4 formed in this way is viewed as a whole, the inner support portion 4b exhibits a band-shaped wave pattern, giving a dynamic change in appearance, and has elasticity depending on the degree of collapse of the wave shape. is obtained.

The skin material 4 is covered by putting the seat pad 3 inside, and with the movable seat pad 3 installed on the frame 2, the end portion of the outer side portion 4c is attached to the lower part of the frame 2 by means such as a hook ring (not shown). Complete the assembly by stopping. In this case, a sound deadening material 10 such as a coarse blanket is interposed at the abutting portion between the seat pad 3 and the frame 2 to prevent the rubbing noise between the seat pad 3 and the frame 2.

Next, the operation of the above-mentioned seat structure will be explained with reference to FIG.

This figure shows the state when the seat cushion 1 is subjected to the load of the occupant. At this time, a downward load is concentrated on the central portion of the seat cushion 1, and the main portion 3a of the seat pad 3 is contracted and deformed toward the frame 2 in response to body pressure. The main portion 4a of the skin material 4 is forced to follow this deformation of the main portion 3a, and the main portion 3a is forced to follow the deformation of the main portion 3a.
The side support portion 3b and side portions 4b and 4c, which are respectively integrated with a or the main portion 4a, are pulled in the direction of the arrow. In this case, in the conventional type, the side support part 3b and the side parts 4b, 4c are misaligned relative to each other due to the material, such as the large difference in the degree of expansion/contraction or deformation between the seat pad 3 and the skin material 4. This caused a scraping sound.

However, in the seat structure of the present invention, since the inner side part 4b of the skin material 4 is configured to be able to expand and contract freely, when the inner side part 4b is strongly pulled in the direction of the arrow by the main part 4a, the inner side part 4b The side portion 4b extends as shown in the figure and changes from a wavy shape to a flat shape. In other words, the skin material 4, which is difficult to expand and contract, can be freely expanded and contracted by the inner side part 4b, so that the inner side part 4b is not stretched by the main part 4a or the side support part 3b is deformed. The skin material 4 is sufficiently tracked so that there is no relative displacement or the displacement is extremely small. As a result, it is possible to completely prevent low-grade noise such as rubbing noise caused by the relative misalignment between the seat pad 3 and the skin material 4, and it is possible to provide a high-quality seat.

Furthermore, it has been found that by almost eliminating the relative misalignment between the skin material 4 and the seat pad 3, it is also effective as a preventive measure against rubbing and squeak sounds between the seat pad 3 and the side wires 6. . This is because the deformation of the seat pad 3 and the upholstery material 4 due to the load of the occupant or the movement of the load in the main part of the seat cushion 1 is prevented from relative displacement between the upholstery material 4 and the seat pad 3, and the side support section 3b This is considered to be due to the fact that deformation of the lower side of the side support portion 6 is largely prevented, and stress is applied evenly to the contact portion of the side support portion 6 with respect to the side wire 6.

Therefore, in this sheet structure, even without intervening the above-mentioned sound deadening material 10 at the abutment portion between the side wire 6 and the side support portion 3b, the generation of rubbing noise and squeak noise at this portion can be sufficiently prevented. can.

In addition, an inner side portion 4 serving as an elastic portion is added to the skin material 4.
By providing b, a large bag-shaped skin material 4
When a large sheet pad 3 is placed inside and covered, the skin material 4 partially expands and contracts, so that the sheet pad 3 can be easily inserted into the skin material 4 and the covering operation can be performed smoothly.

In the above description, the elastic part of the skin material 4 is set on the entire inner side part 4b, but the elastic part may be provided on a part of the inner side part 4b, or conversely, it is limited to the inner side part 4b. It may also be installed on the outside side. Furthermore, for example, the joint portion 41,
The vicinity of 42 can also be set as an elastic part.

In addition, the structure of the elastic part can be modified in various ways other than those described above. For example, a part or the whole of the inner side part 4b may be made elastic by using a synthetic rubber skin material. Good too.

In addition, in the examples, the present invention was applied to seat cushion 1.
Although we have described an example in which this invention is applied to a seat pad, it goes without saying that the present invention can also be applied to a seat back.Furthermore, by passing the draw cloth attached to the back side of the upholstery material through a slit provided in the seat pad, the end portion of the draw cloth is It functions more effectively in the case of a seat structure that employs a so-called suspension system in which the seat is secured to an S spring or the like suspended on the frame side.

<Effects of the invention> As explained above, the seat structure of the invention has the following effects:
Since the elastic part gives the skin material elasticity,
The skin material easily follows the contraction and deformation of the seat pad, and the relative displacement with the seat pad can be almost eliminated.

Therefore, low-grade noise such as rubbing noise caused by relative misalignment between the seat pad and the skin material can be prevented, and higher quality can be achieved.

Further, when assembling a bag-shaped skin material to the seat pad, since the skin material expands and contracts due to the elastic portion, it becomes easier to cover the seat pad, and the ease of assembly can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a seat cushion to which the present invention is applied, and FIG. 2 is a sectional view showing the action of the seat cushion. 1...Seat cushion, 3...Seat pad, 4...Skin material, 4a...Main part, 4b...
Inner side part (elastic part), 4c...outer side part,
9...Elastic member.

Claims (1)

[Claims for Utility Model Registration] In a seat structure in which a separate seat pad is covered with a bag-shaped skin material, a side portion of the skin material that covers a side support portion of the seat pad is provided with: A seat structure characterized by an integral band-shaped elastic part that expands and contracts.