JPH09294882A - Special core and upholstering method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate otherwise difficult single bead welting, to improve external appearance without using expensive bits, and facilitate work of fixing cover cloth ends by the use of a simple, special core. SOLUTION: A special core 1 integrally formed of plastic material that can be sewn has on its one end a swollen portion 1a of a thickness greater than a groove, on the other end a driving portion 1b of a thickness to be press fit into the groove, and a connecting web 14c of a thickness smaller than the former two portions for interconnecting them. A method of upholstering a chair using the special core 1 comprises the steps of; forming grooves in a frame of seat and seat back, wrapping and sewing the swollen portion 1a of the special core 1 with an end of a top cover cloth formed in an intended finish shape, pulling the wrapped special core 1 and fitting it into the groove while adjusting overall shape of the finished chair so that wrinkles are not produced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to furniture, in particular, a special core for tensioning upholstery cloth for a chair, and a chair tensioning method using the same.

[0002]

2. Description of the Related Art Conventionally, a method of upholstering a chair is such that, for example, in the seat portion, a cushion material for adjusting the shape is placed on the cushion material, and a preformed upholstery material is placed on the cushion material. Tensioning is to secure the pulling chair in a certain position with force so that wrinkles do not appear around it.

As a method for fixing the end portion of the upper portion, there are "single-ball buttocks finish" and "bit finish". First, the former method is die-molded to have a predetermined shape. After sewing (piping) a string with a diameter of 2 to 6 mm around the end of the upholstery cloth, place the upholstery cloth on the cushioning material and pull the upholstery cloth to prevent wrinkles. While the mold is being prepared, the position of the seam of the ball brace is fixed to a predetermined position of the groove with a tucker nail in a groove that is preliminarily formed on the chair side. [Fig. 4]

[0004] However, it is very difficult to pull the upholstery cloth with force while releasing it from the mold to fix it in a certain position, which requires a great deal of skill, and the stopping position is slightly deviated. Has a defect that it looks bent or becomes thick or thin, resulting in poor finish.

Further, this tucker nail is struck intermittently on a straight line at a constant interval (2 to 15 mm), and the tension of the cloth is concentrated on the part of the tucker nail struck at a position off the straight line. However, there is also a drawback that a depression like exvo is formed.

Next, the latter "bit finishing" means that one of the bits formed by folding a strip-shaped metal plate in two along the finishing line is nailed to a predetermined finished shape. Fixed to the side, and while pulling the top cloth with an appropriate tension, adjust the overall mold, cut the excess cloth that cannot be stored in the bit roller, and attach the end of the top cloth to the hook on the other side of the bit. It is done by striking and sequentially striking the bits with a hammer, but this bit was expensive. [Fig. 5]

[0007]

SUMMARY OF THE INVENTION Therefore, the present invention
By using a simple special core, it is possible to easily perform the difficult single-ball buty finish, and it looks good without using an expensive bit, making it easy to fix the end of the upholstery cloth. It is to provide a special core to be used and a method of upholstering a chair using the core.

[0008]

According to the present invention, a groove is formed on the chair side, and a special synthetic resin core having a driving portion that can be press-fitted is used in the groove. Ends are sewn on, and this core is pressed into the groove without fixing with tucker nails for easy terminal processing.
It's something to be quick.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION One aspect of the present invention is a hardness of 60 to 80.
And preferably has a hardness of 70 to 75, is made of a sewable synthetic resin, has a ridge having a width dimension larger than the groove width at one end, and has a width that can be press-fitted into the groove at the other end. The special core is characterized in that a driving portion having a dimension is provided, and the protruding bar and the driving portion are integrally formed with a connecting rod having a width narrower than these.

Next, in the second aspect of the present invention, by using this special core, a groove is formed in a frame of a chair, a backrest or the like, and an end portion of an upholstery cloth molded to have a predetermined finished shape is formed. The method is to sew around the convex strip of the special core, pull it, and adjust the whole mold so that no wrinkles are formed, and then fit the special core into the groove.

Next, according to the third aspect of the present invention, by using this special core, a groove is formed in a frame of a chair, a backrest or the like, and an end portion of an upholstery cloth that is molded so as to have a predetermined finished shape. , With a separate top cloth, sew the part of the special core wrapped around the ridges, pull it, and fit the special core into the groove while adjusting the whole mold so that wrinkles do not appear Is the way.

Further, according to a fourth aspect of the present invention, by using this special core, a groove is formed in a frame of a chair, a backrest or the like, and an end portion of a top cloth which is molded so as to have a predetermined finished shape, The special core is sewn only on the outside of the ridges of the special core and sewn together, and the special core is fitted in the groove while pulling this and adjusting the whole mold so that wrinkles do not appear. It consists of a chair upholstery method using a core.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The hardness is 60 to 80, preferably 70 to 7
5 is made of sewable synthetic resin and has one end
A projecting portion (1a) having a ridge (1a) having a width dimension larger than the groove width and having a width dimension capable of being press-fitted into the groove at the other end (1).
b) is provided, and the special core (1) is characterized in that it is integrally formed between the ridge and the driving portion by a connecting rod (1c) having a width narrower than these. [Fig. 1]

Another embodiment of the present invention will be described with reference to the drawings.
A projecting strip having a width dimension larger than the groove width is provided, and a driving portion having a width dimension capable of being press-fitted into the groove is provided at the other end, and a connecting rod having a width narrower than these is provided between the projecting strip and the driving portion. Using the special core (1) integrally formed with, the groove (B) is formed in the frame (A) of a chair, a backrest, etc., and the top cloth (X) is formed to have a predetermined finished shape. At the end of the special core (1), wrap and sew the ridge (1a) of the special core (1) and pull it to adjust the whole mold so that wrinkles do not occur, and groove (B) the special core (1). It is a method of upholstering a chair using a special core, which is characterized in that [Finishing with a ball; Fig. 2 (a)]

Next, still another embodiment of the present invention will be described with reference to the drawings. A sewn synthetic resin is used as a material, and a ridge having a width dimension larger than a groove width is provided at one end, and another end is provided at the other end. A driving part having a width dimension that can be press-fitted into the groove is provided, and a special core (1) integrally formed with a connecting rod having a width narrower than these is used between the ridge and the driving part, so that a chair, a backrest, etc. The groove (B) is formed in the frame (A), and the end portion of the upholstery cloth (X) that is molded so as to have a predetermined finished shape and a separate upholstery cloth (X ′) Fit the special core (1) into the groove (B) while integrally sewing the part of the core (1) around which the ridge (1a) is wrapped and pulling to adjust the whole mold so that no wrinkles appear. It consists of a chair upholstery method using a special core characterized by wearing. [Finishing with a ball; Fig. 2 (b)]

A further embodiment of the present invention will be described with reference to the drawings. A sewable synthetic resin is used as a material, and a ridge having a width dimension larger than a groove width is provided at one end and the other end is provided at the other end. A chair, a backrest, etc. is provided by using a special core (1) integrally formed with a connecting rod having a width narrower than these, by providing a driving portion having a width dimension capable of being press-fitted into the groove, and between the ridge and the driving portion. The groove (B) is formed in the frame (A) of the above, and the ridge (1a) of the special core (1) is formed at the end of the upholstery cloth (X) that is molded so as to have a predetermined finished shape.
Sew only the outside of, and sew it together, pull it,
Special core (1) while adjusting the whole mold to prevent wrinkles
Is fitted in the groove (B) by a chair tensioning method using a special core. [Ballless finish; Fig. 3]

[0017]

According to the present invention, by using a special core, it is necessary to wrap a lining cloth on a ridge, or to sew only the outer side and to fit a driving portion into a groove to strike a tucker nail. With such advantages, it is possible to perform chair upholstery work easily and quickly, and the finished product is beautiful.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a special core of the present invention.

FIG. 2 is an enlarged sectional view of an essential part showing an embodiment of the method of the present invention.

FIG. 3 is an enlarged cross-sectional view of an essential part showing another embodiment of the method of the present invention.

FIG. 4 is an enlarged sectional view of an essential part showing a conventional example.

FIG. 5 is an enlarged sectional view of a main part showing a conventional example.

[Explanation of symbols]

 1 Special core 1a Convex strip 1b Driving part 1c Connection rod A frame B Groove X Top cloth X'Top cloth

Claims (4)

[Claims] 1. A sewable synthetic resin is used as a raw material, a ridge having a width dimension larger than a groove width is provided at one end, and a driving portion having a width dimension capable of being press-fitted into the groove is provided at the other end,
A special core characterized in that it is integrally formed between the ridge and the driving part by a connecting rod narrower than these. 2. A sewable synthetic resin is used as a raw material, a ridge having a width dimension larger than the groove width is provided at one end, and a driving portion having a width dimension capable of being press-fitted into the groove is provided at the other end,
A special core integrally formed with a connecting rod that is narrower than these between the ridge and the driving section is used to form a groove in the frame of the chair, backrest, etc. so that it has a predetermined finished shape. At the end of the raised fabric, wrap around the ridges of the special core and sew it up, pull it, and fit the special core into the groove while adjusting the whole mold so that wrinkles do not appear. A chair upholstering method using a special core. 3. A sewable synthetic resin is used as a material, and a ridge having a width dimension larger than the groove width is provided at one end, and a driving portion having a width dimension capable of being press-fitted into the groove is provided at the other end,
A special core integrally formed with a connecting rod that is narrower than these between the ridge and the driving section is used to form a groove in the frame of the chair, backrest, etc. so that it has a predetermined finished shape. The end part of the top cloth that has been taken out and the separate top cloth are sewn together with the part of the special core where the ridges are wrapped, and this is pulled, and the whole mold is drawn so that wrinkles do not appear. A chair tensioning method using a special core, characterized by fitting a special core into the groove while adjusting. 4. A sewable synthetic resin is used as a raw material, a ridge having a width dimension larger than a groove width is provided at one end, and a driving portion having a width dimension capable of being press-fitted into the groove is provided at the other end,
A special core integrally formed with a connecting rod that is narrower than these between the ridge and the driving section is used to form a groove in the frame of the chair, backrest, etc. so that it has a predetermined finished shape. At the end of the lining cloth that has been taken out, only the outside of the convex strip of the special core is sewn and integrally sewn, and this is pulled,
A chair tensioning method using a special core, characterized by fitting the special core into the groove while adjusting the overall mold so that no wrinkles appear.