KR200437788Y1 - Chair with steel frame - Google Patents

Abstract

The present invention relates to a chair using a steel frame, more specifically, the front vertical frame 10 and the rear vertical frame 20 is configured by combining the seat frame 30, the seat plate 35 and the back plate 25 Install each combination; The front vertical frame 10 is formed of a frame 100 having a large cross-section of the rear vertical frame 20, and the rear vertical frame 20 is a pressing part formed by pressing and forming the upper and lower back portions of the rectangular pipe 21. 22 and 23, the upper back support 210 and the lower support leg 220 are formed to each of the inclined portions 211, 221 that are opened outwards, the back support 210, the inclined portion 211 As the curved backrest plate 25 is installed in close contact with each other, the chair prevents the safety accident from being flipped forward or rearward as well as comfortably supporting the user's waist while providing excellent safety and comfort. In order to provide excellent productivity and economy according to the frame fabrication, its characteristics are excellent.

Steel, frame, chair, tilt, safety, square, steel frame

Description

Chair using iron frame {A iron frame chair}

1 is a side view showing an example of a conventional chair.

2 is an exploded perspective view of the chair of the present invention.

Figure 3 is a side view of the subject innovation chair.

4 is a rear view of the subject innovation chair.

5 is a process chart showing a rear vertical frame manufacturing process of the present invention.

** Description of the symbols for the main parts of the drawings **

10: front vertical frame 20: rear vertical frame

22,23: pressurization portion 21: square pipe

30: seat frame 35: seat

25: back plate 100: frame

210: back support portion 220: support leg portion

211,221: slope

The present invention relates to a chair using a steel frame, and more particularly, to improve the structure of the front and rear vertical frame, the back plate, the chair using a steel frame that provides excellent safety and comfort as well as excellent productivity and economy. It is about.

In general, the chair is manufactured using a combination of wood, iron, synthetic resin or the above materials.

Particularly, in the case of the chair using the steel frame, the front vertical frame 2 and the rear vertical frame 3 are connected to the seat plate frame 4 as shown in FIG. 1.

At this time, each frame is coupled by a method such as welding or bolting.

In addition, the rear vertical frame 3 separates or integrally forms the lower support leg 3 'and the upper back support 3 ".

And the upper plate of the seat plate frame 4, the seat plate 5, the upper back of the vertical frame 3 is coupled to the back plate 6 is installed to complete the manufacture.

However, in the case of the chair, there is a problem that the risk of a safety accident such as the chair falling back when the weight of the user is seated backward while the user is sitting on the chair is simply produced in a vertical form. .

In addition, the user has a problem that the comfort is lowered when supporting the body because the back plate is also formed in a simple vertical form.

Due to this problem, when using a material such as wood, the rear vertical frame is formed to form a rounded curved surface with the upper and lower sides spreading outward like a bow, thereby preventing the user from falling backward even when the body is backward. It is to increase the comfort while supporting comfort.

However, when using the steel frame it was very difficult to process the rear vertical frame to form a round curved surface to the outside up and down like a bow as described above.

Of course, even if the top and bottom of the steel frame is processed to form a round curved surface to the outside, it is difficult to process a plurality of rear vertical frames formed on the left and right sides of the chair with the same constant curvature, so that practical production and use is difficult.

Therefore, in the case of the chair using the steel frame, although the durability, economical efficiency, productivity, etc. are much better than the case of the wood material, due to the above-mentioned problems, there was a limit to the manufacture and use of the chair using the steel frame.

In addition, the chair using the conventional steel frame is formed so that the front vertical frame has the same diameter in the same shape as the rear vertical frame, so that the safety to support the chair to support the weight to prevent falling back and forth is reduced There was a problem.

The present invention has been made to solve the above problems of the prior art, by improving the structure of the front, rear vertical frame, back plate, providing excellent safety and comfort, as well as simply and multiple rear vertical frames The purpose is to provide excellent productivity and economy by bending molding.

The purpose of this invention,

Combining the front vertical frame and the rear vertical frame into the seat plate frame, the seat plate and the back plate respectively coupled to install;

The front vertical frame is formed of a frame having a larger cross section than the rear vertical frame,

The rear vertical frame forms an inclined portion that is spread outwardly to the upper back support portion and the lower support leg portion by a pressing portion press-molded the rear upper and lower portions of the square pipe,

The backrest support is achieved by close installation of the curved back plate corresponding to the inclined portion.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

That is, the chair using the steel frame of the present invention is as shown in Figs.

A front vertical frame having a support leg function, and a rear vertical frame having a back support portion and a support leg up and down integrally constituted by a seat plate frame 30, and a seat plate 35 and a back support part of a rear vertical frame on the seat plate frame. In jointly installing the back plate on the table,

The rear vertical frame 20 is an upper back support 210 and a lower support leg by pressing parts 22 and 23 press-molded to a lower position where a rear upper position of the square pipe 21 and a lower seat plate are coupled. And forming inclined portions 211 and 221 which respectively open to the outside with portions 220,

The back support plate 210 is provided with a back plate 25 is formed in close contact with each other to form a curved portion 26 corresponding to the inclined portion 211.

At this time, the shaping of the pressing portion 22, 23, as shown in Figure 5, pressurized by a constant pressing force by a press, so as to be bent to have inclined portions 211, 221 of a predetermined angle in each of the plurality of frames. Will be produced.

In addition, the front vertical frame 10 is formed by forming a frame 100 having a larger cross section to form a larger support force than the rear vertical frame 20.

At this time, the front vertical frame 10 is formed in a circular cross section on the drawing, but it can be modified in a rectangular shape and the degree of change of such a simple shape is revealed to belong to the scope of the present invention.

Reference numeral 40 denotes a connection between the left and right rear vertical frames 20 and 20, and 45 represents a fastening member for fixing the rear vertical frame 20 and the back plate 25 to each other.

Next, look at the operation and action of the subject innovation configured as described above.

First of all, the present invention is manufactured using an iron frame, but the upper and lower ends of the rear vertical frame 20 are integrally formed so as to be unfolded to the outside, thereby maximizing comfort with safety preventing the chair from falling backward.

In more detail,

The rear vertical frame 20 is an upper back support part 210 by pressing parts 22 and 23 press-molded by a press or the like to a lower position where the upper position of the rear surface of the square pipe 21 and the lower plate are coupled. The inclined portions 211 and 221 are formed to be formed to the outside of the lower support leg 220, respectively.

In particular, since the pressing portion of the frame is press-molded with a constant force, the inclination of the inclined portions 211 and 221 is made to be uniform in processing a plurality of frames.

In this way, the productivity is improved by integrally manufacturing to form the inclined portions 211 and 221 up and down the rear vertical frame 20.

The chair according to the present invention to which the rear vertical frame 20 is applied, the inclined portion 221 of the support leg 220 is opened to the outside when the user faces the weight in a state where the user is sitting on the chair. By supporting the weight of the chair will prevent safety accidents such as falling back.

In addition, since the backrest plate 25 having the inclined curved portion 26 corresponding to the inclined portion 211 is closely attached to the inclined portion 211 of the backrest support portion 210, the bent portion 26 of the backrest plate is provided. As a result, the user can sit with his back and back bent to increase comfort.

In addition, the present invention is because the front vertical frame 10 is formed as a frame 100 having a larger cross-section to form a larger support force than the rear vertical frame 20, so that the user is not in the chair in front of or behind the weight In case of heading to provide excellent support to prevent flow by the frame 100 is to maximize the safety even more.

At this time, the frame 100 may be formed to have a circular or rectangular cross section, of course.

As described above, the chair of the present invention is formed by opening the upper and lower ends of the rear vertical frame to the outside, and by improving the structure that the cross section of the front vertical frame is larger than the cross section of the rear vertical frame, It prevents the safety accident to be flipped backwards, as well as comfortably supporting the user's waist, providing excellent safety and comfort, and has an effect of providing excellent productivity and economic efficiency according to the frame production.

Claims (2)

A front vertical frame having a support leg function, and a rear vertical frame having a back support portion and a support leg up and down integrally constituted by a seat plate frame 30, and a seat plate 35 and a back support part of a rear vertical frame on the seat plate frame. In attaching and mounting the back plate on the top, The rear vertical frame 20 is an upper back support 210 and a lower support leg by pressing parts 22 and 23 press-molded to a lower position where a rear upper position of the square pipe 21 and a lower seat plate are coupled. And forming inclined portions 211 and 221 which respectively open to the outside with portions 220, Chair back using a steel frame, characterized in that the back support plate 210 is formed in close contact with the back plate 25 to form a curved portion 26 corresponding to the inclined portion 211. The method of claim 1, The front vertical frame 10 is a chair using a steel frame, characterized in that formed by forming a frame 100 having a larger cross-section so as to form a larger support force than the rear vertical frame (20).

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