KR20240049215A - The made method of Sofa to set on the steel frame - Google Patents

Abstract

The 'method of manufacturing a sofa assembled with a steel structure' of the present invention has been manufactured with wood and resin products, but as wood is increasingly scarce and dependent on imports, it is expensive and difficult to manufacture, so plywood, plastic, or steel frames are used as substitutes. This is about the domestic furniture manufacturing sector, which has become alienated from consumers due to this unavailability, making elegant sofas expensive and rare products, and is also facing a stagnant economic crisis.
Fortunately, steel sculptures made by welding instead of wood are made into sofas, so the steel sculptures are not visible. In fact, they are lighter and stronger than wood, and are easy to move around indoors, making it possible to manufacture them as a suitable product, so they are professionally produced. This is an invention regarding a manufacturing method that is being applied for.
If this invention becomes popular, it is expected to have the effect of revitalizing the domestic furniture industry by making it possible to supply it to consumers at a lower price while being sturdier than existing products, so that even demand groups who have not been able to purchase it due to the high price can respond.
[index word]
Steel sculpture, upper semi-circular rebar, pillar steel plate, plywood hanger,
Base support, leg iron pipe, arm back reinforcement, backrest,
sponge,

Description

{The made method of Sofa to set on the steel frame}

Recently, as chairs have become a necessity according to the westernized lifestyle, sofas have been used for rest due to sitting for long periods of time, and sofas often have to be moved to utilize space. If the sofa is weak, it is easy to be damaged, and the study of sofa structure and materials is gradually increasing. It belongs to a manufacturing technology in the furniture field that has received increasing interest.

Considering that the existing sofa of the present invention is made of wood, sponge, and artificial leather and is easily damaged by frequent movement, thick reinforcing bars, round iron pipes, and square iron pipes are welded to form the backrest, the base for the seat, and the armrests for both arms. It is made as an iron sculpture for a sofa by assembling and combining the parts, and plywood cut to fit the lower arm, backrest, and seat is fixed with screws, a thick layer of sponge is placed on top, and colored leather or artificial leather is applied to create an existing sofa-shaped iron sculpture. It is a field belonging to sofa manufacturing technology in the furniture field, which is made of plywood, sponge, and artificial leather.

The reason for producing the iron sofa of the present invention is the scarcity of materials for making sofas rather than our daily lives. Wood is precious and heavy, and due to changes in diet, weight increases, causing severe damage to the sofa, so research was conducted to develop materials to gradually solve this problem. If a steel sculpture is made by welding steel bars, iron pipes, and iron plates, the skeleton is stronger than wood, but plywood is also lighter, so it is less damaged by frequent movement and is durable even when used for a long period of time. By making the steel sculpture as a skeleton, it is strong enough to not be damaged even by overweight people, including Koreans and foreigners. The background was the development of a steel sofa made of new materials for sofa production.

The main background technology is the sofa in which the sofa pad protrudes across the entire surface and the backrest is converted into a mat, published in Domestic Patent Publication No. 10-2011-0043574 (2011.04.27.) and the sofa published in Domestic Patent Publication No. 10-2020-0018844 (2020.02.21.). )'s prefabricated sofa frame and No. 10-2015-0050246 (2015.05.08.), a sofa having a metal frame that is easy to manufacture, and Domestic Utility Model Publication No. 20-1994-0002591 (1994.02.15.) and Japanese Registered Utility Model Publication No. 3210628 (22017.06.01.) and No. 3171404 (2011.10.27.) were used as background technology for the present invention.

Looking at the sofa manufacturing technology of existing inventions, all of them are wood-based and are not made of iron, but are only used for a little assistance. The entire frame is made of iron, so it belongs to the iron sofa rather than wood, which can withstand excessive weight. It is a furniture industry with a shortage of wood. We are at risk of having to develop internal construction materials at some point, and many chairs other than sofas use composite materials, a situation that needs to be resolved urgently.

The steel structure for the sofa frame of the present invention uses thick reinforcing bars that are not related to body weight and can only withstand pushing due to movement in the upper part including the backrest area, and also uses thick reinforcing bars in the arm back area, and has a sofa seat on which one sits only with the buttocks. Rectangular iron pipes were used only for the square base that forms the floor to be offered, and cylindrical iron pipes were used only for the four parts forming the legs. Instead of wooden legs, an iron pipe leg for attaching the bridge was manufactured, and only the height was adjusted to create a bridge. It is done as a research project to fit in,

The task is to develop technology to produce a light, strong, and well-cushioned steel sofa by wrapping and attaching a thick sponge that can wrap around reinforcing bars to the backrest and arm parts and then covering them with artificial leather.

The furniture industry began producing sofas made entirely of wood using plastic and iron sculptures in response to the global shortage of forest resources. This is a field of furniture that uses luxurious manufacturing techniques to create cushions by making only the skeleton of sofas made of iron, which are commonly used in living rooms and offices. Development is a means of solving problems,

Since iron sculptures are made only by welding, thick reinforcing bars and iron pipes are connected by welding rather than bending wire, and plywood is attached to large areas to make wooden boards. If you fold or roll a thick sponge and wrap it around the iron sculpture, the cushioning is excellent, so just weld the iron. If done well, it is strong and can accommodate overweight buttocks without hesitation, solving the research problem of the thickness of rebar and the assembly task of manufacturing a light and new shaped sofa.

In addition, the development of steel tube legs that can be removed and inserted from time to time so that the sofa legs can be raised according to the body size was selected as a task, and the development of sofa legs made of iron tube legs so that the height can be adjusted depending on the position whenever the sofa is moved rather than being fixed.

The steel sofa of the present invention, unlike the existing wooden sofa, is a new product that does not suffer damage due to movement when moving depending on the use of the sofa and has an adjustable height. It is a product that fits the eye level of consumers and is suitable for living rooms and general offices due to apartment living. It is expected to have the effect of increasing consumer usability as frequent movement is possible.

Moreover, it is expected to contribute to the expansion of demand and the development of the furniture industry, as the sofa can be easily moved in offices and living rooms that are becoming narrow due to various types of furniture, relieving consumers' difficulties by making it easier to move the sofa depending on the purpose and situation.

Figure 1 is a front view showing only the sofa iron structure in this sofa manufacturing method,
Figure 2 is a left side view of the iron sculpture from the left side in this sofa manufacturing method;
Figure 3 is a layout diagram of the iron structure separated by part in this sofa manufacturing method,
Figure 4 is an arrangement diagram of additional materials used in the iron sculpture in this sofa manufacturing method,
Figure 5 is a perspective view of only the seat plate attached to the iron sculpture in this sofa manufacturing method;
Figure 6 is a front view of the finished sofa product made of iron sculpture in this sofa manufacturing method,
Figure 7 is a front view of only plywood for each part attached to the iron sculpture in this sofa manufacturing method;
<Brief explanation of symbols>
10: top semicircular reinforcing bar, 12,12a: left and right column reinforcing bars,
14,14a: Left and right pillar steel plates, 16,16a: Left and right rear leg iron pipes,
18,18a: Left and right front leg iron pipes, 20: Upper back horizontal band,
22: Upper and middle back horizontal bars, 24: Back upper and lower horizontal bars,
26: back and lower horizontal bars, 30,30a: left and right longitudinal base supports,
32,32a: Belly, front horizontal bar base support, 34,34a: Left, right arm back reinforcement,
36,36a: Left, right rear reinforcing bars, 38,38a: Left, right front reinforcing bars,
40: plywood hanger, 42: elastic band,
50,50a,: Top and bottom back plywood, 50b,50c,: Left and right side plywood,
52: Seat plywood, 60: Sponge,
70: Artificial leather, 80: Sofa waist area,
82: sofa cushion, 90: iron sculpture,
92,92a,92b,92c: sofa legs, 100: steel sofa,
A: Perspective view of base support assembly, B: Perspective view of assembly of iron sculpture,
C: Assembly drawing of the backrest, D: Assembly drawing of the left and right arm backs,

Existing sofas on the market have wooden arm backs covered with artificial leather (70) arranged to the left and right, and the heavy backrest and seat parts are also made of wood and then combined to make a chair, and the arm backs are placed on top of them and screwed together. After combining, the short legs are attached again, plywood is attached to the seat area, and apart from making a sofa with a cushion made of elastic bands (42) and sponges (60), rebar, steel plates, and iron pipes are cut to suit the purpose of each section of the sofa and welded for each section. After making the iron sculpture (90), when the sofa-shaped iron sculpture (90) is molded, unlike wood, spaces are formed for each part, so the back and buttocks of the person sitting may fall out, so it is cut and manufactured to fit the space created for each part. The upper and lower back plywood (50, 50a), the left and right side plywood (50b, 50c), and the seat plywood (52) are cut to fit the plywood hanger (40) previously attached to the iron sculpture (90) to form an iron sculpture ( 90), it was attached to each space formed on the backrest, seat, and left and right sides of the thighs, then woven with sponge (60) so that the iron part was not visible, and only the seat plywood (52) was attached to have elasticity with an elastic band (42). This is a manufacturing method for a steel sofa (100), which is later covered with artificial leather (70).

Before the development of this iron sofa (100), the skeleton was made of wood, boards, and sponge (60) to form a cushion, and covered with artificial leather (70), but now that wood is scarce and the cost has increased, wood is used. As consumers turned away from sofas because they were expensive, heavy, and difficult to move, this steel sofa (100) became necessary.

After researching materials through various methods, we developed a steel sculpture (90) made by cutting light rebar, steel plates, and cylindrical and square iron pipes into various sofa sizes and attaching them by welding. After comparing it with wood products, we found that it was not only lighter than wood but also stronger. It was confirmed that the steel sofa (100) was made of high-quality iron sculpture (90) and was excellent.

First, as shown in the backrest assembly diagram (C), for the backrest to support the upper body, including the neck region, a semicircular upper semicircular reinforcing bar (10) is manufactured from reinforcing bars forming a round border on the upper layer, and the upper semicircular reinforcing bar (10) is The left and right column reinforcing bars (12, 12a), which run in a straight line at the bottom of both left and right sides, are connected to the same reinforcing bar, and the left and right column steel plates (14) are connected to the lower ends of the left and right column reinforcing bars (12, 12a). , 14a) is manufactured separately and attached to the ends of the left and right column reinforcing bars (12, 12a) by welding, and the lower ends of the left and right column steel plates (14, 14a) are attached to the left and right sides of the left, right, and rear leg iron pipes (16, 16a). Welded to one side of the upper outer circumference, it is manufactured so that the corresponding sofa legs (92, 92a) can be inserted.

As shown in the perspective view of the base support assembly (A), the rear cross-piece base support (32) connects the left and right rear leg iron pipes (16, 16a), and the front cross-piece base support (32a) connects the left and right front leg iron pipes (18, 18a). ), and connects the left and right hind leg iron pipes (16, 16a) and the left and right front leg iron pipes (18, 18a). The base support is assembled by welding it to the left and right ends of the support (32), and the end of the front horizontal base support (32a) is welded to the front end of the left and right longitudinal base support (30, 30a) and connecting the front and back and left and right sides. It forms a square base as shown in the perspective view (A).

The left and right ends of the front crosspiece base support (32a) without a backrest are welded to one side of the outer circumference of the left and right front leg iron pipes (18, 18a), and the rear crosspiece base support (32) with a backrest is welded to the left and right rear leg iron pipes ( 16, 16a) is connected to form the base of the sofa, and the left column base support (30) and the right column base support (30a) become base support parts that support the sofa base, and the front side is slightly wide and the back side is slightly wide. As shown in the perspective view (A) of the assembly of the base support that forms the bottom of a narrow sofa, it is manufactured with the base support that forms a square corner.

In the base support area forming the square corner, the left and right hind leg iron pipes (16, 16a) are welded to the left and right ends of the left and right pillar steel plates (14, 14a), and when viewed from the side, extend to the front and are welded to the left and right arm backs. The reinforcing bars (34, 34a) extend forward from the left and right, gradually lowering, then bend straight from the top just before the left and right column base supports (30, 30a) from the left and right, and then turn slightly inward to form the left and right column base supports. It is welded and attached 30mm inside the front upper part of (30,30a), and the shape is manufactured as shown in the left and right arm back assembly drawing (D), so that the left and right arm back reinforcements (34,34a) are connected to the left and right rear reinforcement bars (36,36a). And the left and right front reinforcing bars (38, 38a) are attached to complete the left and right arm back areas.

As described above, if the backrest assembly drawing (C), the base support assembly perspective view (A), and the left and right arm back assembly drawings (D) are combined into one, it becomes the assembly perspective view (B) of the iron sculpture, and the left and right sides of the completed iron sculpture (90) , the right column base supports (30, 30a) do not have plywood hangers (40), and only the belly and front cross base base supports (32, 32a) have plywood hangers (40) at two locations, front and back, and the plywood to be fixed here is at the hip. The reason for cutting out the center of the seat plywood (52) is to create a space by cutting it out when cutting to add cushion to the buttocks area, and attaching an elastic band (42) and sponge (60) to ensure good cushioning for comfort. Same as the existing sofa,

It is made of left and right arm back reinforcements (34, 34a) that raise the left and right arms, left and right side plywood (50b, 50c) that accommodates the left and right thighs, and sponge (60) for the left and right sides. Attached to the backrest area, the upper back panel plywood (50) and sponge (60) are attached between the upper back panel (20) and the upper middle back panel (22), and the lower layer is between the upper back panel (24) and the lower back panel (26). Attached with back plywood (50a) and appropriately cut sponge (60),

After manufacturing the steel sculpture 90 with the steel frame, steel plate, and iron pipe as described above, it is fitted with the upper and lower back plywood (50, 50a), the left and right side plywood (50b, 50c), and the seat plywood (52), respectively. Attach the sponges (60) that have been cut so that the remaining steel parts are not visible, and attach the sponges (60) that have been cut in advance so that the steel parts are not visible to form a cushion. Then, all the steel parts of the sofa are covered with sponges (60). , After covering the entire covered body with only the bottom surface and covering it with artificial leather (70), the corresponding sofa legs (92, 92a, 92b, 92c) are inserted into the designated positions. Front view of the finished iron sofa manufactured as an iron sculpture in this sofa manufacturing method. As shown in (Figure 6), it is made of iron sofa 100,

The left and right pillar steel plates 14, 14a in the backrest area of the iron sculpture 90 are long iron plates with a thickness of 3 mm and a width of 25 mm, and are 330 mm long. The length can be adjusted because the upper and lower parts are welded even if they overlap and shrink when welded. The semicircular reinforcing bar (10) is 798mm long and forms an upper semicircle, and the upper back crossbar (20), which is welded laterally to support the back at the left and right ends of the upper semicircle, is 480mm, and the ends of the left and right column reinforcing bars (12 and 12a) are located at the left and right columns. The top of the steel plates (14, 14a) and the upper and middle rear cross bars (22) are welded, and the ends of the left and right pillar steel plates (14, 14a) are joined to the lower and lower back cross bars (26) and the left and right rear leg iron pipes (16, 16a). It was assembled by welding with the upper side of the

The left and right hind leg iron pipes (16, 16a) are made by inserting a 2 mm thick, 28 mm diameter cylindrical iron pipe into a 30 mm diameter cylindrical iron pipe to form a double complex with 45 mm of overlap. The total length of the left and right hind leg iron pipes (16, 16a) is 90 mm. A large iron pipe rises to the top and is welded to the ends of the left and right pillar iron plates (14, 14a), and is attached to the rear of the left and right column base supports (30, 30a) on one side of the outer circumference of the left and right rear leg iron pipes (16, 16a). It is attached to the end, and the left side of the rear cross section base support (32) is attached to the left rear leg iron pipe (16), the right side is attached to the right rear leg iron pipe (16a), and the left side of the front cross section base support (32a) is attached to the left front leg iron pipe (18). It is attached to the right side by welding to one side of the right front leg iron pipe (18a), so the left and right front leg iron pipes (18, 18a), the left and right rear leg iron pipes (16, 16a), and the belly and front crossbar base supports ( 32,32a) and the left and right column base supports (32,32a) are combined with each other, so these base supports (32,32a, 30,30a) form a square and are completed as base supports.

The left and right longitudinal base supports (30, 30a) are square iron pipes 30 mm wide and 20 mm long, and the length is 500 mm. The back and front horizontal base supports (32, 32a) are first, and the length of the rear horizontal base supports (30) is 500 mm long. It is 620mm with 90mm on the right and 90mm on the right and 440mm on the floor, but 90mm on the left and right comes down at 45 degrees, so the actual straight distance is 550mm, which is 90mm down, but the straight length is about 55mm and the length that touches the floor is 440mm. ), the front horizontal base support (32a) is slightly wider at 30mm and slightly wider at 470mm, so the total length is 650mm, but the straight width is 55mm and 47Om, which is 580mm,

In the backrest area, the upper semicircular reinforcing bar (10) is a reinforcing bar with a diameter of 8mm forming a semicircle, the maximum height at the center is 100mm, the width on the left and right is 480mm, but the total length is 798mm, and the left and right column reinforcing bars (12, 12a) at both ends are 200mm left and right. They are connected to each other, and the lower ends of the left and right pillar steel bars (12, 12a) are also welded to the top of the left and right pillar steel plates (14, 14a), and the ends of the left and right pillar steel plates (14, 14a) are connected to the left and right rear legs. It is welded to the top of the iron pipe (16, 16a), and the left and right front leg iron pipes (18, 18a), unlike the backrest area, are manufactured independently below the knee for the front crossbar base support (32a) for the seat plate and the front for the armrest.

Next, the left and right arm back bars (34,34a) with a diameter of 8 mm gradually lower and extend from the upper front of the left and right pillar steel plates (14,14a), and are at a right angle from the upper part of the front left and right front leg iron pipes (18,18a). It was bent down and brought inward about 30 mm from the front just before it touches the left and right column base supports (30, 30a) and fixed by welding to the upper surface of the front part of the left and right column base supports (30, 30a), respectively.

When the iron sculpture (90) consists of only the skeleton, it is made of reinforcing bars with a diameter of 8 mm to strengthen durability, and cross bars are attached to four places on the back to strengthen the backrest. First, the upper back cross bars (20) with a length of 480 mm are attached to the left and right pillars. It is inserted and welded to the top of the reinforcing bars (12, 12a), and secondly, the upper middle back cross band 22 is welded to the top of the left and right pillar steel plates 14, 14a, so the upper middle back cross band 22 has a length of 500 mm,

Third, the upper back horizontal bar (24) is lowered 45 mm from the top of the left and right pillar steel plates (14, 14a) and welded to the left and right, and the lower ends of the left and right pillar steel plates (14, 14a) are fourthly lower back horizontal bars (26). ) is welded, the backrest area forms a space with the upper and lower plates, so the two upper and lower back plywood boards (50, 50a) to be mounted top and bottom are attached. The upper layer plywood (50) is 480 mm wide and 500 mm long and 200 mm long, and the space between the upper back horizontal bar (24) and the lower back horizontal bar (26) is lowered from 330 mm to 45 mm to 285 mm, and the upper layer is 500 mm horizontal and the lower layer is horizontal. A 550mm trapezoidal lower layer plywood (50a) was attached.

The seat plywood (52) to be attached to the cut-out buttocks by cutting out 200mm horizontally and 230mm vertically in the center area to attach the elastic band (42) is cut to 440mm horizontally at the back, 470mm at the front, and 500mm vertically on the left and right. The seat plywood (52) for the buttocks is manufactured, and the plywood hangers (40) of the left and right horizontal base supports (32, 32a) are placed at two locations each at the front and back, and a bolt is installed at each bolt hole in a total of four plywood hangers (40). Filled and attached seat plywood (52),

The plywood hangers (40) are 2 mm thick in size and specification, and form bolt balls with a diameter of 5 mm in two places within 50 mm in width and 20 mm in height. Some are arranged in three places, two places, or one place, but the plywood hangers (40) have the same size. ) and attached by welding and then tightening with bolts. The upper and lower back plywood (50, 50a), the left and right side plywood (50b, 50c), and the seat plywood (52) are named and manufactured to cover all space areas. was able to attach without mistake,

To explain in more detail, both the upper back horizontal bar 20 and the upper middle back horizontal bar 22, which will support the upper back plywood 50, are attached with plywood hangers 40 at one center and two left and right places, so that the upper back plywood 50 is It was firmly attached and the back cushion sponge (60) was able to faithfully function as a cushion without being pushed or sagging.

The upper back cross bar (20) is horizontally welded and attached to the left and right column reinforcing bars (12, 12a) connected to the left and right ends of the upper semicircular reinforcing bar (10), and connected to the lower ends of the left and right column reinforcing bars (12, 12a). The top and middle back cross bars (22) are also welded and attached horizontally to the left and right pillar steel plates (14 and 14a), and the upper back cross bars (24), which come down 45 mm from the top of the left and right pillar steel plates (14 and 14a), are also horizontally attached. If the ends of the left and right pillar steel plates (14, 14a) that are welded and reconnected are also welded horizontally at the points where they contact the left and right rear leg iron pipes (16, 16a), respectively, the back and lower back bars (26) are also welded horizontally, so that the entire rear backrest area is left and right. The rear horizontal base support (32) was attached to one outer circumferential surface of the right rear leg iron pipe (16, 16a), and the upper and lower back plywood (50, 50a) were attached to the rear backrest in two places at the top and bottom.

Two steel plates with a thickness of 3 mm, a width of 30 mm, and a length of 330 mm are made of the left and right column steel plates (14, 14a), and the upper left and right sides are welded and attached to the left and right lower ends of the left and right column reinforcing bars (12, 12a). The left and right upper ends of the column reinforcing bars (12, 12a) are connected left and right to the upper semicircular reinforcing bar (10), and the longest distance between the central part of the upper semicircular reinforcing bar (10) and the upper back horizontal bar (20) is a semicircle formed at a height of 100 mm from the center. ,

The left and right rear leg iron pipes (16, 16a), which are made by inserting a 30 mm diameter pipe into a cylindrical iron pipe with a thickness of 2 mm and a diameter of 26 mm and a width of 20 mm and a length of 30 mm, so that the length of the two pipes are 90 mm, are connected to the left and right pillar steel plates (14, 14a). It is attached to the bottom, and the front horizontal base support (32a) is welded to the left and right longitudinal base supports (30, 30a), and the left and right side supports are welded to one side of the outer circumference of the left and right front leg iron pipes (18, 18a). The column base supports (30, 30a) were also attached by welding when attaching the front ends of the left and right arm back bars (34, 34a) at a position about 30 mm from the front.

When manufacturing the back and front horizontal base supports (32,32a), which are part of the base to be placed front and back, 90mm of the iron pipe is bent at 45 degrees to form the base, so one end extends to 440mm, the other to 470mm, and the end of the 90mm that rises again to 45 degrees. The four sofa legs (92, 90a, 92b, 92c) are attached to the outside of the left and right front leg pipes (18, 18a) and the left and right rear leg pipes (16, 16a). The left rear leg pipe (16) In the left side horizontal base support (32), it extends long, descending 45 mm at a 45 degree angle, then ascends again at a 45 degree angle for 45 mm and is attached to the right rear leg iron pipe (16a), and the front side also has a front side cross base support on the outside of the left front leg iron pipe (18). As the end of (32a) is welded, the right column base support (30a) is also welded at the same time, and the opposite end of the welded right column base support (30a) is connected to the right side of the back horizontal base support (32) and the bottom of the right column steel plate (14a). Attached by welding, each base support (30, 30a, 32, 32a) is welded together to form a solid square shape.

As described above, the rear horizontal base support (32) or the front horizontal base support (32a) descends from the left hind leg iron pipe (16) at a 45-degree diagonal, extends to form the floor, then rises again at a 45-degree diagonal, and then extends to the right hind leg iron pipe (16a). ), and the front horizontal base support (32a) also descends at a 45-degree diagonal from the left front leg iron pipe (18) and extends to form the floor, then rises again at a 45-degree diagonal and is then attached to one outer circumference of the right front leg iron pipe (18a). It is possible to attach four sofa legs (92, 92a, 92b, 92c) that are welded together, but only the front cross section base support (32a) attached to the left front leg iron pipe (18) is 30 mm longer than the rear side section base support (32). It is only longer and is the same as the left and right column base supports (30, 30a).

In addition, the left and right column base supports (30, 30a) attached to the sides of the left and right hind leg iron pipes (16, 16a) are arranged on the left and right by cutting square iron pipes with a thickness of 2 mm, a width of 30 mm and a length of 20 mm to 500 mm. When attached, the shape of the base support forms a square with a 30 mm gap in the front, forming the bottom of the iron sculpture (90) for a sofa.

First, fold the thin, round reinforcing bar into a semicircle to form the upper semicircular reinforcing bar (10), and then form the upper body of the backrest with the left and right column reinforcing bars (12, 12a) that form the column. This time, cut the steel plate to form the left and right column steel plates (14, 14a). Welded to the ends of the left and right column reinforcing bars (12, 12a) to form the lower part of the backrest, and attach the upper, upper, middle, upper back, and lower back horizontal bars (20, 22, 24, 26) for the backrest in four designated horizontal positions. The size can be adjusted according to the orderer's request, and since it is welding rather than mold manufacturing, the iron sculptures (90) can be adjusted in size even if they are not all uniform.

Assemble the ends of the left and right pillar steel plates (14, 14a), which are completed as backrest parts, into the base supports of the side pillar steel plates (14, 14a) in the backrest assembly diagram (C). 30, 30a) are attached to the outer circumference of the left and right rear leg iron pipes (16, 16a), and the left and right arm back bars (34, 34a) are welded to the top of the left and right pillar steel plates (14, 14a), If the ends of the right column steel plates (14, 14a) are attached by welding to the rear of the left and right column base supports (30, 30a), respectively, the iron sculpture (90) is completed. If additional explanation is given at the base support area, the left, When arranging the right longitudinal base supports (30, 30a), if the left and right horizontal base supports (32, 32a) are arranged in the front and rear, the left and right end parts of the base supports (30, 30a, 32, 32a) are After welding the left and right hind leg iron pipes (16, 16a) and the left and right front leg iron pipes (18, 18a) at the top of one side of the outer circumference, only the central portion of the front and rear horizontal base supports (32, 32a) is closed to the floor 45 It goes down the slope and the left and right hind leg iron pipes (16, 16a) and the left and right front leg iron pipes (18, 18a) touch the floor when there are no iron pipe legs (90, 92a, 92b, 92c).

The left and right arm back bars (34,34a) that are welded to the top of the left and right pillar steel plates (14,14a) and extend forward are bent down from the upper surface of the square front of the left and right steel base supports (30,30a) and welded. By welding in this way, the steel structures as a whole were completed to form a steel structure (90) for the backrest, the base support, and the left and right arm backs.

As described above, the iron sculpture (90) is completed and the upper and lower back plywood (50, 50a) and the left and right side plywood (50b, 50c) are attached to fill the space formed on the side of the backrest and arm area. The upper back panel (20) was cut into plywood (50) to fill the space between the upper back panel (20) and the upper middle back panel (22), then bolted to each plywood hanger (40), and the sponge (60) was properly arranged and fixed. ,

Of the 330 mm length of the left and right pillar steel plates (14, 14a), excluding the 45 mm between the upper back cross bar (24) and the upper and middle back cross bar (22), the length is 285 mm, and the upper and lower back cross bars (24) are 500 mm long. It is made of trapezoidal lower back plywood (50a) formed by 550 mm of the horizontal bar (26) and consists of a backrest corresponding to the area below the waist. If a sponge (60) is also attached to this, a cushion is provided, and again, each sponge (60) is made of artificial backrest. Cover with leather (70), select the sofa legs (92.92a, 92b, 92c) desired by the user, and attach them to the two left and right rear leg iron pipes (16, 16a) and the two left and right front leg iron pipes (18, 18a). and commercialized it,

The characteristic feature of the iron sofa 100 manufactured as described above is the iron sculpture 90, but another feature is the waist area 80 of the sofa, which is formed by the upper middle back horizontal bar 22 and the back horizontal horizontal bar 24, which allows you to sit on it for a long time. It supports the flexibility of the waist and adds comfort with the sofa cushion (82). The round space of the upper semi-circular reinforcement (10) is the neck area, so it is an area where no force is applied and plywood does not need to be attached.

Claims (1)

In the sofa manufacturing method of assembling the steel structure (90) by cutting and welding reinforcing bars, iron plates, and iron pipes for a sofa, the entire body of the iron structure (90) is covered with a sponge (60),
The left and right column steel plates (14, 14a) are welded to each end of the left and right column reinforcing bars (12, 12a) connected to the left and right ends of the upper semicircular reinforcing bar (10), forming a semicircle and extending from above between the left and right struts. A backrest portion that sequentially assembles the upper back horizontal bar (20), the upper middle back horizontal bar (22), the upper back horizontal bar (24), and the lower back horizontal bar (26),
Left and right columns made of square iron pipes on one side of the outer circumference of the left and right hind leg iron pipes (16, 16a) and left and right front leg iron pipes (18, 18a), which are assembled by inserting a long and small iron pipe into the inner surface of a short, round steel pipe so that only a part of it overlaps. A base support portion assembled into a square body by welding the base supports (30, 30a) and the back and front horizontal base supports (32, 32a) at each end,
The left and right arm back reinforcements (34, 34a), which are attached to the top of the left and right column reinforcement bars, come forward and are bent downward, and attach the ends to one side of the front upper part of the left and right steel base supports, and the upper arm back reinforcement bars. The left and right arm back parts assembled with the supporting left and right plywood arm back reinforcements (36, 36a) and the left and right front arm back reinforcements (38, 38a),
The backrest portion, the base support portion, and the left and right arm back portions are assembled into the iron sculpture, and upper and lower back plywood (50, 50a) and left and right side plywood (50b, 50c) and the seat plywood 52 are attached, the sponge is also attached, artificial leather 70 of the selected color is covered, and the corresponding sofa legs 92, 92a, 92b, 92c are attached to the left and right rear leg iron pipes and the left and right front leg iron pipes. A method of manufacturing a sofa assembled with a steel structure, which is characterized by inserting it into an iron sofa (100).