KR102251008B1 - Manufacturing method of door handle by curving pipe - Google Patents

Abstract

The present invention relates to a method of manufacturing a door handle manufactured by bending a pipe, and in particular, a binding means is integrally formed at both ends of the door handle manufactured by bending a pipe, and at the same time, damage to the bent portion even in the case of a thin pipe. It is intended to provide a high-quality door handle that is easy to manufacture and low in cost by bending without bending.
As a means for solving the above problem, the present invention constitutes a vertical body by cutting a thin metal pipe to a set length, and constructing a connection flange extended outward by pressing both ends of the vertical body with a press, In the above-described state, the auxiliary core material with threaded holes is inserted at both ends of the vertical body, and then the part where the auxiliary core material is inserted is bent with a pipe bending machine to manufacture a door handle in which the horizontal body is integrally bent at both ends of the vertical body. will be.

Description

Manufacturing method of a door handle manufactured by bending a pipe{MANUFACTURING METHOD OF DOOR HANDLE BY CURVING PIPE}

The present invention relates to a method of manufacturing a door handle manufactured by bending a pipe, and in particular, a door handle is constructed by bending both side ends of a thin pipe, but with smooth bending of the bent portions bent at both ends, it is bound to the bent ends. It is to provide a high-quality door handle, which is composed of two means, so that a solid fastening can be expected, and is easy to manufacture and low in cost.

In general, door handles for opening and closing the door are installed and used in the door, and in the case of the door handle, various types of door handles are applied according to the material, purpose, and type of the door.

Looking at the prior art related to the door handle, Utility Model Registration No. 20-0201918 "Door Handle" (Patent Document 1) and Utility Model Registration No. 20-0241030 "Decorative Cap Structure of Door Handle" (Patent Document 2) ) And Patent No. 10-0620453 "Glass door handle" (Patent Document 3), and the like are provided.

Examining the technical content of Patent Document 1, the inner and outer handles consisting of a straight tube body capable of expressing various and elaborate nickname patterns on the surface and an albow for attachment with one end fixed to both sides of this red line type tube are made of glass doors. In order to be able to easily, accurately and firmly assemble both sides of the same door, a female thread hole is formed in the center at the free end of one albow, and a fixing cap into which the hollow elastic packing is inserted is fixed, and the free end of the albow on the other side. A flange is formed on the side, and a fastening cap with a hole hanging on the flange is inserted into the other albow, and a bolt is fixed in the center on the inner circumference of the fastening cap, and a fixing plate formed with alternating protrusions and concave portions on the rim is fixed. , It relates to a door handle structure by inserting a locking plate and a hollow elastic packing formed on the rim of the wings in contact with the flange of the Albow past the concave inlet of the fixing plate and inserted into the fastening cap.

Examining the technical content of Patent Document 2, it is possible to omit polishing and plating by manufacturing a multi-stage curved hemisphere and a coupling pipe together, and to make it possible to simply fix the door handle without using bolts and nuts. It is designed to provide a decorative cap structure for a door handle that has a rational structure. The structural feature is that the decorative caps are fixed to both ends of the handle formed with fixed feet, and the decorative cap is a multi-stage curved hemisphere and multi-stage. The ends of the curved hemispheres are rounded to each other, and the stone pipe of the multi-stage curved hemisphere is apt-fixed by inserting it into the hole of the coupling pipe. will be.

In addition, looking at the technical content of Patent Document 3, the invention is a plurality of rods formed coaxially with through holes of different sizes; An insertion member consisting of a head portion having a diameter larger than one of the through holes and smaller in diameter than the other through hole, a body portion integrally formed with the head portion, a screw hole formed on a bottom surface, and a polygonal cross-section; A male screw having a head portion having a diameter larger than one of the through holes and smaller in diameter than the other through hole, and engaged with the screw hole of the insertion member; A first elastic member formed with a polygonal groove into which the insertion member is inserted and having a hole penetrating through a bottom and a cross section of the groove; A second elastic member corresponding to the first elastic member and the glass door and having a hole through which the male screw passes; It is to provide a glass door handle including a; closing means for closing the through-hole having a large diameter among the through-holes.

In the case of Patent Documents 1 to 3, the common point of configuring the door handle by using a pipe is the same, but in the case of Patent Document 1, an elbow having fixing caps formed at both ends of a straight tube body is assembled and fixed, and in the case of Patent Document 2, a pipe The free end and the fixed cap elbow are assembled at the upper and lower ends of the straight door handle, and the straight tube body is assembled in the vertical direction so that it can be assembled with the door, and in the case of Patent Document 3, it is closed at the upper and lower ends of the rod made of a straight pipe. A member and an elastic member are assembled, and there are problems such as difficulty in manufacturing and assembling a door handle composed of a pipe, and a lot of hassle in installation.

In particular, in the case of the door handle described in the above patent document, a separate fastening means is assembled at the upper and lower ends of the straight pipe, but if necessary, there is a hassle of assembling a separate connection flange or a fixing cap to the fastening means.

In addition, for the manufacture of the handle, it is possible to simplify the manufacturing by bending the upper and lower ends of the straight pipe, but in this case, the shape of the pipe is deformed or damaged as the bent portion of the pipe is squashed, so a thick pipe must be used, and the weight of the handle is therefore It became heavier and caused an increase in manufacturing cost, and there were problems such as having to prepare a separate binding means at the bent end.

Utility model registration No. 20-0201918 "Door handle" Utility model registration No. 20-0241030 "The structure of the decorative cap of the door handle" Patent No. 10-0620453 "Glass door handle"

The present invention relates to a method of manufacturing a door handle manufactured by bending a pipe, and in particular, a binding means is integrally formed at both ends of the door handle manufactured by bending a pipe, and at the same time, damage to the bent portion even in the case of a thin pipe. It is to provide a high-quality door handle that is easy to manufacture and inexpensive by bending without bending.

As a means for solving the above problem, the present invention constitutes a vertical body by cutting a thin metal pipe to a set length, and constructing a connection flange extended outward by pressing both ends of the vertical body with a press, In the above-described state, the auxiliary core with threaded holes is inserted into both ends of the vertical body, and then the part where the auxiliary core is inserted is bent with a pipe bending machine to manufacture a door handle in which the horizontal body is integrally bent at both ends of the vertical body. .

The present invention constitutes a vertical body by cutting a thin metal pipe to a set length, pressing both ends of the vertical body with a press to construct a connection flange extending outwardly, and in the above-described state, both ends of the vertical body After inserting the auxiliary core with a threaded hole in the side, the part where the auxiliary core is inserted is bent with a pipe bending machine so that the horizontal body is bent integrally at both ends of the vertical body. In addition, there is an effect of being able to manufacture a high-quality door handle that is easy to manufacture and inexpensive by making the connection flange, which is a binding means, integrally configured at both ends.

Figure 1: A perspective view of the door handle according to the present invention
Figure 2: A cross-sectional view of the door handle according to the present invention
Figure 3: Configuration of a vertical body cut pipe for manufacturing the present invention door handle
Figure 4: A state diagram of connecting flanges at both ends of the vertical body of Figure 3
Figure 5: A state diagram of inserting auxiliary core members on both sides of the vertical body of Figure 4
6: A state diagram of a door handle in which the horizontal body is bent at both ends of the vertical body of FIG. 5
Figure 7: Example of the use state of the present invention door handle

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

The door handle 10 to be provided in the present invention is composed of a vertical body 20 composed of a thin metal pipe and a horizontal body 30 vertically bent through bent portions 21 at both ends of the vertical body 20. .

At the end of the horizontal body 30, a connection flange 31 is formed in which a part of the horizontal body 30 extends in an outward direction is bent, and a plurality of fastening holes 32 are drilled in the connection flange 31.

In addition, by inserting the auxiliary core material 40 with a threaded hole 41 on the inner surface of the hollow part 22 of the bent part 21, the horizontal body 30 at both ends of the vertical body 20 made of a thin-walled pipe is formed. For this purpose, when bending the bent portion 21 with a pipe bending machine, the door handle 10 is configured to prevent damage such as collapsed or broken pipe.

The manufacturing of the door handle 10 having the above configuration is as follows.

The prepared thin metal pipe is cut to a set length to prepare a vertical body 20 as shown in FIG. 3.

In the above, it is suitable if the thickness of the metal pipe is about 0.8 to 1.5 mm, but in the embodiment of the invention, a metal pipe with a thickness of 1.2 mm was used based on the outer diameter of the pipe 19 mm (φ), and the thickness of the metal pipe Depends on the outer diameter.

In addition, the outer diameter of the metal pipe constituting the vertical body 20 varies depending on the purpose of the door handle 10 manufactured using the metal pipe.

For example, in the case of the door handle of a building, the door handle of the shoe cabinet, and the door handle of the sink, the size of the door handle is different, so a metal pipe with an outer diameter suitable for the purpose is used, and in the above case, the manufacture of the door handle of the building is required. The outer diameter of the metal pipe is large and can be selected in the order of shoe rack and sink door handle.

By pressing the hollow portions 22 at both ends of the vertical body 20 prepared above with a press mold, a connection flange 31 is formed in which a part of the vertical body 20 extends outward, and at the same time, the connection flange ( A plurality of fastening holes 32 are drilled in 31).

The connection flange 31 may be formed by bending the horizontal body 30 from the vertical body 20 and then forming the connection flange 31, which may be changed in order depending on the convenience of work.

When the molding of the connection flanges 31 at both ends of the vertical body 20 is completed, insert the auxiliary core 40 into the hollow part 22 for smooth bending of the vertical body 20, but the outer surface of the auxiliary core 40 There is a screw hole (41) is drilled.

The material of the auxiliary core material 40 is made of metal or synthetic resin, and the length of the auxiliary core material 40 is bent part 21 to form a horizontal body 30 by bending both ends of the vertical main body 20 Just enough to be located inside

When the coupling of the auxiliary cores 40 in the hollow portions 22 on both sides of the vertical body 20 is completed, use a bending machine to bend both ends of the vertical body 20 to which the auxiliary cores 40 are fitted, thereby bending the bent portion 21 ), and the horizontal body 30 having connection flanges 31 formed at both ends of the vertical body 20 through the bent part 21 is bent, so that the door handle 10 to be provided in the present invention is Manufacturing is complete.

Reference numeral 60 denotes an entrance door, and 61 denotes a fastening piece.

Since the door handle 10 of the present invention configured as described above is manufactured by bending a metal pipe composed of a thin thickness, it is lightweight and can be mass-produced and thus can be manufactured at low cost.

In particular, the auxiliary core 40 is fitted on the inner surface of the bent part 21 of the door handle 10, so that when forming the bent part 21 to form the horizontal body 30 on both side ends of the vertical body 20, Since the auxiliary core member 40 supports the inner diameter of the hollow portion 22 of the vertical body 20 on the inner surface, the vertical body 20 is bent in a desired shape without being collapsed or damaged.

In addition, the horizontal body 30 configured at both ends of the door handle 10 is fitted with a connection flange 31 and an auxiliary core 40 through which the screw hole 41 is drilled. Depending on the fastening hole 32 of the connection flange 31, or using only the screw hole 41 of the auxiliary core 40, the fastening piece 61 is used for fastening and fixing, or the fastening hole 32 and the screw hole 41 By using the fastening piece 61 can be double-coupled, you may expect a solid fastening.

Depending on the material of the metal pipe used to manufacture the door handle 10, the exterior surface may be painted with various types of plating, paint, or the like to provide the door handle 10 having a beautiful aesthetic.

(10)--Door handle (20)--Vertical body
(21)--Bending part (22)--Hollow part
(30)--Horizontal body (31)--Connecting flange
(32)--Contractor (40)--Subsidiary trial material
(41)--Screw hole

Claims (2)

The metal pipe is cut to a set length to form a vertical body 20, and the upper and lower ends of the vertical body 20 are expanded to the outside to constitute a bending configuration of the connection flange 31 having the fastening hole 32, and the connection flange 31 ) Is formed in the hollow portion 22 of the upper and lower ends of the vertical body 20, the auxiliary core member 40 having the screw hole 41 formed therein, and the auxiliary core member 40 fitted to both ends of the vertical body 20 By bending, the auxiliary core material 40 together with the vertical body 20 constitutes a bent portion 21, and the connection flange 31 is integrally formed at the upper and lower ends of the vertical body 20 through the bent portion 21 A method of manufacturing a door handle manufactured by bending a pipe, characterized in that the horizontal body 30 configured as a bent configuration. The method of claim 1, wherein the pipe constituting the vertical body (20) has an outer diameter ( φ ) of 19 mm and a thickness of 1.2 mm.

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