JP2000061179A - Terminal treatment of upholstery fabric of chair and upholstery fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to fix the terminal of an upholstery fabric with a fewer process without using staples. SOLUTION: In the terminal treatment method for the upholstery fabric 1 covering a cushion material 2 supported by a core material 3 of the back or seat of a chair, tape materials 4 (or racking threads) are sewn to the upholstery fabric 1 by two rows of sewing threads 6, 6 sewn in the portion on the side inner than the peripheral edge of the upholstery fabric 1 and simultaneously cords 5 for tensing are supplied between these tape materials 4 (or racking threads) and the upholstery fabric 1 and while the cords are retained by the tape materials 4 (or racking threads), the cores are mounted at the upholstery fabric 1. The cords 5 for tensing are so disposed as to be made freely movable within a cylindrical part 7 formed by the fancy stitches including the tape materials 4 (or racking threads). The upholstery fabric 1 is made fixable by pulling and tightening the cords 5 for tensing in the state of enveloping the cushion material 2 and the core material 3 in the peripheral edge, thereby tightly packing these materials.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal treatment method for an upholstery and a upholstery that covers a backrest and a cushion of a seat of the chair with the upholstery. More specifically, the present invention relates to a terminal processing method for an upholstery cloth and a method for treating the edge of the upholstery cloth, which is rotated around the periphery of the upholstery cloth to the back side of the cushion and squeezed with a string to stop the cloth.

[0002]

2. Description of the Related Art A conventional seat or back of a chair is composed of a core material, a cushion material supported by the core material, and an upholstery material covering the cushion material, and a peripheral edge of the upholstery material covered on the cushion. The cushion and core are wrapped and fixed. At this time, the peripheral edge of the upholstery is subjected to a terminal treatment of fixing the core material with staples or fixing it with an adhesive. For example, as shown in FIG. 6, the cushion material 1
02 and the core material 103 are wrapped around the lining 101,
The staple 104 is struck and fixed to the core 103. Then, the peripheral edge of the upholstery material 101 is cut off along the place where the staples 104 have been driven in, and it is arranged to improve the appearance.

Further, as one of the methods for wrapping the back of a chair and the front side of the cushion of the seat portion on the upholstery without loosening, as shown in FIG. And tighten both ends of the tightening cord 205 that is passed through the tunnel portion 204 formed by the overlock stitch 203 formed on the peripheral edge 202 of the upholstery 201 to squeeze the peripheral edge 202. There is a method in which both ends are connected and attached (Japanese Patent Laid-Open No. 9-10450).
issue).

[0004]

However, as shown in FIG. 6, when the staple 104 is used for terminal treatment of the upholstery material 101, the staple 104 is discarded when it is discarded.
It takes a lot of time to extract and makes it difficult to separate and discard. In addition, the upper cover material 101 is stapled with the core material 10
After fixing to No. 3, the extra edge / terminal 105 of the upholstery fabric 101
It requires a process of cutting off, and the number of working processes increases.
Moreover, if the upholstery fabric 101 is left uncut, the fabric thread may be loosened, or in the case of a foam-molded member in which the upholstery fabric 101, the core material 103, and the cushion material 102 are integrated, the core material 103 and the urethane 102 part There is a problem that the tongue is likely to be peeled off from the upholstery fabric 101 and there is a high possibility that the terminal / edge 105 of the upholstery fabric will pop out of the back cover.

Further, as shown in FIG.
When the tightening cord 205 is sewn at the same time as the end processing of the peripheral edge 202 of the upholstery fabric 201, the tightening cord 205 and the thread of the overlock stitch 203 come out without being separated from each other at the terminal end 206. An extra step of separating the tightening cord is required. Moreover, since the strength of the tunnel portion 204 formed by the overlock stitch 203 is weak, the tightening cord 2
When tightening 05, the overlocking thread may be loosened and deformed. In particular, when a stretchable knit type upholstery fabric 201 is adopted, there is a higher risk of deformation due to insufficient strength. For this reason, the fabric thread is unwound
There is a risk that the narrowing of 02 will loosen and wrinkles will occur on the upholstery fabric 201.

[0006] It is an object of the present invention to provide an upholstery material which can fix an end without using staples and with a small number of steps, and a method for processing the end.

[0007]

In order to achieve the above object, the present invention according to claim 1 is arranged along a peripheral edge of an upholstery cloth covering a cushion material supported by a core material such as a back or seat of a chair. In the terminal treatment method, the elastic cord is attached by tightening the elastic cord, and the cushion material and the core material are wrapped around the peripheral material by squeezing the elastic cord by tightening the elastic cord. Both side edges of the tape material supplied along the periphery of the upholstery fabric can be sewn with two rows of sewing threads at a portion inside the periphery of the overlaying cloth, and at the same time between the two rows of sewing threads and the tape. Supplied so that the tightening cord is passed between the material and the upholstery, and the tightening cord is held by the tape material while being attached to the upholstery, and the inner portion of the inner edge of the upper stretch is described above. The tubular part where the tightening cord is pulled out from both ends Along the circumference of the upholstery, and the cushion material and the core material are wrapped around the periphery of the upholstery, and the tightening cord is tightened with the cushion material and the core material wrapped around. The peripheral edge is squeezed to tightly fix the upholstery.

Therefore, at the same time when the tape material is sewn, the peripheral edge of the upholstery is sewn with two rows of seams and end treatment is performed so as not to be loosened, and the tightening cords are sewn in and attached so that they can be taken in and out. Moreover, since the tightening cord is attached to the upholstery fabric while being held down by the tape material when the tape material is sewn along the periphery of the upholstery fabric, the tightening cord is attached to the tape material and the upholstery fabric in a separate process. It is possible to omit the work of passing through the tubular portion between them. In addition, since the tightening cord is held by the tape material all around, the periphery of the upholstery is not deformed or loosened even if it is strongly pulled, and the tension of the upholstery is kept constant.

According to a second aspect of the present invention, there is provided a method of treating the end of the upholstery cloth, in which a tightening cord is provided along the peripheral edge of the upholstery cloth covering the cushion material supported by the core material such as the back and seat of the chair. In the terminal treatment method, the terminal treatment method comprises the steps of: attaching and tightening the tightening cord to squeeze the peripheral edge of the upholstery fabric and squeezing and fixing the upholstery fabric with the cushion material and the core material wrapped. Along two lines of the sewing thread sewn to the upholstery at a portion inside the peripheral edge of the upholstery along the two threads and the stroke ends of the two threads are reciprocated.
A decorative stitch consisting of a string of sewing threads sewn to the upholstery is applied, and at the same time a string for tightening is passed between the two rows of thread and between the string and the upholstery. While supplying and pressing with the swing thread, the tightening cord is attached to the upholstery fabric, and the tubular portion where the tightening cord is pulled out from both ends is attached to a portion inside the peripheral edge of the upholstery fabric. It is formed along the peripheral edge of the ground, and the peripheral edge of the upholstery material is turned to the back side of the core material, and the cushion material and the core material are wrapped around, and the tightening cord is tightened to wrap the cushion material and the core material. The peripheral edge of the stretched fabric is squeezed so that the stretched fabric is tightly fixed. In this case, at the same time as the decorative sewing with the sewing machine, the tightening cord can be put in and taken out by being attached by being sewn between the sewing thread of the decorative sewing and the upholstery, and the peripheral edge of the upholstery is sewn with two rows of stitches. Terminal processing is performed so that it cannot be solved. Therefore, the tightening cord is 2
Both ends are firmly sewn to the upholstery with a row of sewing threads, so it is strong because it is pressed against the upholstery with the sewing thread of the decorative stitch, and at the end the thread for the decorative stitch and the tightening cord are separated and taken out. Therefore, the subsequent work becomes easy.

[0010] According to a third aspect of the upholstery fabric, two rows of sewing threads are provided on both sides of the upholstery fabric around the periphery of the upholstery fabric that wraps around to the back side when the cushion material and the core material are wrapped. The tape material, which is sewn on the inner side of the peripheral edge to form a tubular portion along the peripheral edge of the upholstery cloth, is passed between the two rows of sewing threads and between the tape material and the upholstery cloth. And a string for tightening the both ends of which is pulled out from both ends of the tubular portion, and the string for tightening is attached to the upholstery fabric so that the string can be freely moved in and out. In this case, simply wrap the cushion material and the core material around the periphery of the upholstery cloth to the back side of the core material, and then tighten the tightening cord to squeeze the tape material and the periphery of the overlay material and wrap the cushion material and the core material. In this state, the upholstery can be stretched and fixed. That is, the periphery of the upholstery and the mouth formed by the tape material are narrowed, and the upholstery is tightly adhered to the cushion material. Therefore, the upholstery does not come off while covering the cushioning material, and the terminal does not stick out while keeping its shape. Also, if you untie the tightening cord and then spread the mouth formed on the periphery of the upholstery with your hand, the mouth of the periphery of the upholstery will be loosened and spread on one piece of cloth, so the cushioning material is easy. Can be removed from. Moreover, since the tightening cord is held by the tubular portion made of tape material over the entire circumference, the portion that holds the tightening cord even if it is pulled strongly, that is, the tubular portion is deformed or loosened, in other words, For example, the upholstery does not sag.

Further, according to a fourth aspect of the present invention, in an upholstery cloth covering a cushion material supported by a core material such as a back or seat of a chair, when the cushion material and the core material are wrapped, they are wrapped around to the back side. While reciprocating between the two rows of sewing threads and the two rows of sewing threads that are sewn to the above-mentioned upholstery on the inner edge of the outer edge, both stroke ends of the upper thread are covered with the two rows of thread. Decorative stitches that form a tubular portion along the peripheral edge of the upholstery cloth with a swing thread sewn on the upholstery cloth, and between the two rows of sewing threads and between the swing thread and the upholstery cloth. And a string for tightening both ends of which is pulled out from both ends of the tubular portion, and the string for tightening is attached to the upholstery fabric so that the string can be freely moved in and out. In this case, by tightening or loosening the tightening cord as in the case of the upholstery according to claim 3, the upholstery can be easily attached to and detached from the cushion material. Moreover, the tightening cord is attached to the upholstery fabric only by decorative stitching, and the tightening string is pressed down by the swing thread that is firmly sewn to the upholstery fabric at both ends with two rows of sewing thread. At the same time, the decorative stitch and the tightening cord are separated and taken out at the end.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of the present invention will be described below in detail based on an embodiment shown in the drawings.

FIGS. 1 to 3 show an example of a terminal processing method for an overhanging area. A cushion material 2 and a core material 3 are provided on the upholstery material 1.
A tape material 4 sewn along the peripheral edge 9 that wraps around to the back side when wrapped, and a tightening string 5 that is passed through the inside of the tape material 4 and pulled out from both end openings 8 to the outside. The tape string 4 is used to hold the tightening cord 5 so that it can be freely inserted and withdrawn and attached to the upholstery.

Here, the upholstery fabric 1 is made of cloth, vinyl chloride, synthetic leather, leather or the like, and has a shape substantially corresponding to a backrest or a seat, and a cover allowance for the seat or the back (back or seat). It is composed of a single sheet of material that is cut into a large size with a certain thickness and a margin for wrapping around to the back side thereof.
The upholstery material 1 is not necessarily formed of a member separated from the cushion 2, the core material 3, and the like, and in some cases, urethane is foamed between the upholstery material and the core material in the foaming mold. It can also be applied to the upholstery of the urethane foam product integrated with the skin.

The tape material 4 is made of, for example, a cloth, a plastic sheet, a synthetic leather, a leather, or the like, and has two rows of sewing threads 6 and 6 at both sides at any position inside the peripheral edge 9 of the upholstery material 1. The tubular portion 7 is formed by being sewn on the upholstery fabric 1. The tape material 4 is, as shown in FIG.
A position separated from the peripheral edge along the peripheral edge 9 of the upholstery cloth 1, in other words, both side edges of the tape material 4 is formed by two rows of sewing threads 6
The sewing machine is sewn at a position away from the peripheral edge 9 of the sewing machine. At this time, the tape material 4 is sewn onto the upholstery fabric 1, taking care not to sew the thread 6 directly onto the tightening string 5. At the same time as sewing the tape material 4,
The unnecessary peripheral portion is cut off as needed by a knife (not shown) attached to the sewing machine, so that a step of cutting off an extra edge of the upholstery fabric 1 is not required later. here,
The tightening string 5 is continuously supplied together with the tape material 4 or separately from the tape material 4. Then, at the time when the sewing of the tape material 4 is completed, both ends of the tightening cord 5 are cut at the positions where they are pulled out from the tape material 4. In this state, the tightening string 5 is movable in the tape material 4 in the longitudinal direction and can be tightened or loosened freely.

Thus, the tubular portion 7 made of the tape material 4 with the tightening cord 5 pulled out from both ends is formed along the peripheral edge 9 of the upholstery material 1.

According to this end treatment, the tape material 4 is sewn and at the same time, the peripheral edge 9 of the upholstery fabric 1 is sewn so that it is not loosened and the tightening cord 5 is sewn in and out. It is attached. Moreover, the tightening cord 5
Is supplied with the tape material 4 whose both edges are sewn to the upholstery cloth by two rows of sewing threads 6, and is arranged along the peripheral edge 9 of the upholstery cloth 1 while being pressed against the upholstery cloth 1 by the tape material 4. . Therefore, the work of passing the tightening cord 5 through the tape material 4 in a separate process can be omitted.

In the case of such an upholstery material 1, it is attached to the cushion material 2 and the like as follows. For example,
By covering the cushion material 2 with the upholstery material 1 from the front side and wrapping the peripheral edge to the back side (wrapping the cushion material 2 and the core material 3), pulling both ends of the tightening cord 5 in opposite directions to each other Fix 9 By turning the peripheral edge 9 of the upholstery material 1 that wraps the cushion material 2 and the core material 3 to the back side of the core material 3 and then tightening the tightening cord 5, the tape material 4 and the peripheral edge 9 of the upholstery material 1 are squeezed to form a cushion. With the material 2 and the core material 3 wrapped around, the upholstery material 1 can be tightened and fixed. Kamihari 1 obtained in this way
The edge 12 formed by the tape material 4 and the peripheral edge 9 of the upholstery material 1 are narrowed, and the upholstery material 1 is tightly attached to the cushion material 2. Therefore, the upholstery material 1 does not come off while covering the cushion material 2 and the core material 3, and the terminal does not stick out while maintaining its shape. Further, if the tightening cord 5 is untied and then the hand is pulled so as to open the mouth 12 formed at the periphery of the upholstery fabric 1, the upholstery fabric 1
Since the peripheral edge 9 is loosened and spread on one piece of cloth, it can be easily removed from the cushion material 2. Then, if necessary, the resin cover can be used to blind the eyes to further improve the appearance of the chair.

In the case of the upholstery fabric in this embodiment, the work of attaching and detaching the upholstery fabric 1 can be performed very easily. Therefore, cleaning when the upholstery fabric 1 is soiled or damaged,
This makes it easy to perform replacements for repairs, or replacements for summer and winter according to seasonal changes. Moreover, since the sewing of the tape material 4 covers the peripheral edge of the upholstery cloth 1 and decorates it, even if the peripheral edge of the upholstery cloth is not covered with an outer shell such as a back cover or a backrest cover, the appearance may be inferior. Disappear.

FIG. 4 and FIG. 5 show another embodiment of the overlay and the terminal treatment of the present invention. The upholstery fabric 1 in this embodiment reciprocates between two rows of sewing threads 6 and 6 which are sewn to the upholstery 1 at the inner side of the peripheral edge 9 and these two rows of sewing threads 6 and 6 while reciprocating between them. Decorative stitch 11 for forming a tubular portion 7 ′ along the peripheral edge 9 of the upholstery cloth 1 with a swing thread 10 whose stroke end is sewn to the upholstery cloth with two rows of sewing threads 6 and 6.
And a string 5 for tightening, which is passed between the two rows of sewing threads 6 and 6 and between the swing thread 10 and the upholstery material 1 and pulled out from both ends of the tubular portion 7 '. That is, in this embodiment, as shown in FIG.
˜Instead of the tape material 4 of the embodiment of FIG. 3, a tubular portion 7 ′ is formed by a decorative stitch 11 made up of two rows of sewing threads 6 and 6 and a swing thread 10.
Is formed, and the tightening cord 5 is pressed between the yarn 10 and the upholstery fabric 1 to be movably attached to the upholstery fabric 1. Reference numeral 6'denotes a back yarn.

In the case of such an upholstery cloth 1, although not shown, for example, when two rows of sewing threads 6 and 6 are sewn to the upholstery cloth 1 by a sewing machine, the swing thread 10 is sewn on the left and right sewing needles. It is also possible to supply the tightening cord 5 using a nozzle-shaped jig or the like from below the means for reciprocating between them, and sandwich the tightening cord 5 between the swing string 10 and the upholstery fabric 1. .

Thus, a tubular portion 7'consisting of decorative stitches 11 in which the tightening cord 5 is pulled out from both ends is formed along the peripheral edge 9 of the upholstery fabric 1.

According to this terminal treatment, the peripheral edge 9 of the upholstery cloth 1 is
By performing decorative sewing at an arbitrary position in the vicinity or away from the peripheral edge 9, the end treatment of the upholstery fabric 1 is performed, and at the same time, the tightening cord 5 is sewn in and attached so that it can be taken in and out. Moreover, the tightening string 5 is the thread 1 for decorative sewing.
It is supplied along with the 0, and is arranged along the peripheral edge 9 of the upholstery fabric 1 while being pressed against the upholstery fabric 1 by the ply thread 10.
Therefore, it is possible to omit the work of passing the tightening cord 5 through the tubular portion 7 ′ configured by the decorative stitch 11 in a separate process.

1 to 3 also in the case of such an upholstery fabric 1.
Similar to the embodiment described above, the cushioning material 2 and the core material 3 can be fixed in a wrapped state by only tightening the tightening cord 5.

The above-described embodiment is an example of the preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the tape material 4 or the decorative stitch is applied to the back surface of the upholstery fabric, but the invention is not particularly limited to this, and the tape material 4 or the decoration is applied to the front surface or both surfaces. The sewing 11 may be applied. Further, it goes without saying that the terminal processing of the upholstery of the present invention is not limited to the seat of a chair, but can be applied to a backrest or an armrest. Furthermore, it is not particularly limited to the configuration of covering the periphery of the upholstery and the outside of the terminal with a resin back cover or backrest cover,
It is also possible to use it without attaching a cover at all.

[0026]

As is apparent from the above description, according to the method for treating the upholstery of a chair according to claim 1, the tape material is tightened at the same time as the sewing is performed at a position slightly apart from the edge of the upholstery. Attachment of the cord and terminal processing are completed. Moreover, since the thread for sewing the tape material simultaneously functions as the terminal treatment, the cloth thread of the upholstery is not loosened. Further, since the formation of the tubular portion and the attachment of the tightening cord are completed at the same time by sewing the tape material, the work can be completed in the same number of steps as the case where the tightening string is passed by the overlock stitch. In addition, since the tightening cord is held on the entire circumference by the tape material, it is not deformed or loosened even if it is strongly pulled, and the tension of the upholstery fabric is kept constant and wrinkles are not given. Furthermore, it is necessary to use fasteners such as staples because the upholstery fabric can be tightened and fixed by simply tying or binding the periphery of the upholstery fabric with the cushion material and the core material wrapped around, or by tying. There is no. Therefore, the fixing work is quick. Moreover, when removing the upholstery, all that is necessary is to loosen the knots or ties of the strings and open the mouth made of the squeezed tape material. Therefore, the upholstery can be easily replaced or attached or removed, and since the staples are not used, the sorting and disposal work is easy.

Further, according to the second aspect of the invention, since the sewing work of the tightening cord is completed at the same time as the decorative sewing,
The attachment of the tightening cord does not become particularly difficult and can be realized by a normal sewing process. Moreover, the attachment position of the tightening cord is not limited to the peripheral edge of the upholstery cloth, and it is possible to arrange the tightening cord on the inner side with a necessary distance from it depending on the design.

Further, in any one of the first and second aspects of the invention, since the extra edge can be cut off by a sewing machine attached to the sewing machine at the same time as the sewing or the decorative sewing of the tape material by the sewing machine, the edge cutting is separately performed. No process required.

Further, according to the third and fourth aspects of the invention, the cushion material and the core material are wrapped and the peripheral edge of the upholstery material is tied or tied by tightening the tightening cord to tighten the upholstery material. Since it can be fixed in place, it is not necessary to use fasteners such as staples. Therefore, the fixing work is quick. Moreover, when removing the upholstery, all that is necessary is to loosen the knots or ties of the strings and open the mouth made of the squeezed tape material. Therefore, the upholstery can be easily replaced or attached or removed, and since the staples are not used, the sorting and disposal work is easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a chair seat to which a terminal treatment method for an upholstery according to the present invention is applied.

FIG. 2 is an enlarged cross-sectional perspective view of an essential part of the upholstery fabric of FIG.

FIG. 3 is a perspective view for explaining the operation of sewing a sewing machine by passing a tape material and a tightening string on the upholstery fabric of FIG.

4A and 4B are an explanatory view and an enlarged view showing another embodiment of the overlay and the terminal processing method thereof according to the present invention.

5 is an enlarged cross-sectional perspective view of an essential part of the upholstery fabric of FIG.

FIG. 6 is a diagram for explaining a conventional terminal treatment method for upholstery,
It is a perspective view which expands and shows the work which fixes upholstery to a core material with a staple, and the edge cutting work.

FIG. 7 is a diagram for explaining a conventional terminal treatment method for upholstery,
FIG. 8 is a front view showing the terminal through which the tightening cord is passed at the same time as the overedging of the peripheral edge of the upholstery fabric.

[Explanation of symbols]

1 Kamihari 2 cushion material 3 core material 4 tape material 5 tightening cord 6 sewing thread 7,7 'tubular part 9 Edge of Kamihari 10 Swing thread 11 Decorative stitching

Claims (4)

[Claims] 1. A tightening cord is attached along a peripheral edge of an upholstery cloth covering a cushioning material supported by a core material such as a back or seat of a chair, and the peripheral edge of the upholstery cloth is tightened by tightening the elastic cord. In the terminal treatment method of squeezing the cushion material and the core material so as to squeeze and fix the upholstery material, two side edges of the tape material supplied along the peripheral edge of the upholstery material are provided.
The sewing thread is sewn on the inner side of the periphery of the upholstery cloth, and at the same time, the tightening cord is fed between the two rows of thread and between the tape material and the upholstery cloth. While holding the tightening cord with the tape material, it is attached to the upholstery cloth, and a tubular portion where the tightening cord is pulled out from both ends is attached to a portion inside the peripheral edge of the upholstery cloth. It is formed along the peripheral edge, and the peripheral edge of the upholstery material is turned to the back side of the core material, and the cushion material and the core material are wrapped, and the tightening cord is tightened to wrap the cushion material and the core material. A terminal treatment method for the upholstery of a chair, which comprises squeezing the periphery of the sheet and tightly fixing the upholstery. 2. A tightening cord is attached along a peripheral edge of an upholstery cloth covering a cushioning material supported by a core material such as a back or seat of a chair, and the peripheral edge of the upholstery cloth is tightened by tightening the tightening strap. In the terminal treatment method of squeezing the cushion material and the core material and tightly fixing the upholstery fabric, the end treatment method is performed along the peripheral edge of the upholstery fabric to a portion inside the peripheral edge of the upholstery fabric. While reciprocating between the two rows of sewing threads sewn on the upholstery and these two rows of thread, both stroke ends are
A decorative stitch consisting of a string of sewing threads sewn to the upholstery is applied, and at the same time a string for tightening is passed between the two rows of thread and between the string and the upholstery. While supplying and pressing with the swing thread, the tightening cord is attached to the upholstery fabric, and the tubular portion where the tightening cord is pulled out from both ends is attached to a portion inside the peripheral edge of the upholstery fabric. It is formed along the peripheral edge of the ground, and the peripheral edge of the upholstery material is turned to the back side of the core material, and the cushion material and the core material are wrapped around, and the tightening cord is tightened to wrap the cushion material and the core material. A terminal treatment method for the upholstery of a chair, comprising squeezing the periphery of the upholstery and tightening and fixing the upholstery. 3. In an upholstery cloth covering a cushion material supported by a core material such as a back or seat of a chair, in a peripheral edge of the overlay material wrapping around to the back side when the cushion material and the core material are wrapped, Between the two rows of sewing thread and the tape material that has two rows of sewing threads sewn at both sides on the inner side of the peripheral edge of the upholstery and forms a tubular portion along the peripheral edge of the overlay. And a tightening cord having both ends pulled out from both ends of the tubular portion, which is passed between the tape material and the upholstery fabric, and the upholstery string is held by pressing the tightening cord with the tape material so as to freely come and go. The upholstery of the chair characterized by being attached to the ground. 4. In an upholstery cloth covering a cushion material supported by a core material such as a back or seat of a chair, the cushion material and the core material are wrapped around the periphery of the upholstery cloth to the back side when wrapped. While swinging back and forth between the two rows of sewing threads sewn to the upholstery inside the periphery and these two rows of sewing thread, both stroke ends thereof are sewn to the upholstery with the two rows of sewing thread. A decorative stitch that forms a tubular portion with a thread along the peripheral edge of the upholstery cloth, and a thread of the tubular portion that is passed between the two rows of sewing threads and between the swing thread and the upholstery material. Equipped with tightening cords with both ends pulled out from both ends,
An upholstery fabric for a chair, characterized in that the tightening cord is attached to the upholstery fabric so as to be able to move in and out by pressing the string.