KR20160001011A

KR20160001011A - Piston rod and manufacture method for floor hinge

Info

Publication number: KR20160001011A
Application number: KR1020140078602A
Authority: KR
Inventors: 김정규
Original assignee: 김정규
Priority date: 2014-06-26
Filing date: 2014-06-26
Publication date: 2016-01-06
Also published as: KR101685756B1

Abstract

The present invention provides a piston rod for a floor hinge that can reduce the manufacturing cost of a piston rod for a floor hinge while preventing a function from deteriorating and can greatly improve productivity, A piston rod main body having a long hole formed therein so that a spring and a small piston can be loaded therein, a pin hole and a groove for mounting the piston head on the rear side,
And a knuckle member formed with a male screw portion is interlocked with a piston rod main body, and the plate holding pin portion and the roller seat receiving groove portion are formed on the front and the rear of the piston rod body. According to the present invention, it is possible to reduce manufacturing cost and raw material cost by manufacturing a piston rod body used for a floor hinge with a seamless pipe and assembling a knuckle member, thereby reducing manufacturing cost of the product, It is possible to reduce the processing time of the product and improve the productivity, thereby achieving economical benefits.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a piston rod for a floor hinge,

The present invention relates to a piston rod for a floor hinge and a method of manufacturing the same. More particularly, the present invention relates to a piston rod for a floor hinge, which can improve the productivity of a piston rod used for a floor hinge for automatically closing a door And a method of manufacturing such a piston rod.

As known, a floor hinge is used for opening and closing a door of a door installed at an entrance of a building. The floor hinge is embedded in a concrete floor and a door is installed on the hinge shaft to open the door artificially and then to be closed again. Is configured to perform the floor hinge.

As described above, in order to operate the floor hinge, there is provided a cam operation chamber having an opening at an upper side of one side thereof and a cylinder having an insertion hole formed at the other rear end communicating therewith, and a piston rod, a spring, and oil are charged into the cylinder, To close the door.

A configuration of a piston rod installed inside a cylinder will now be described in order to achieve the above-described operation.

The piston rod is formed with a long hole so that a spring and a small piston can be loaded therein. In the front portion, a plate seating portion for fixing the plate installed on the upper side and the lower side of the cam provided on the hinge shaft, The knuckle member is integrally formed.

In the method of manufacturing a piston rod having the above-described structure, a round rod having a predetermined diameter is prepared, a slot is formed in the center so that the spring and the small piston can be loaded, and the upper and lower portions of the tip are pressed to form a plate seating portion A knot member having a fixing hole and a roller seat portion is formed and then integrally finished or a round bar having a diameter as large as the width of the knuckle member is prepared to form a plate seating portion, a fixing hole and a roller seat portion, .

According to the manufacturing method of the piston rod as described above, the cost of purchasing raw materials, machining time, machining cost and machining cost are increased, and the productivity of the product is greatly reduced, There is a problem of low competitiveness.

Korean Patent Laid-Open No. 10-2002-0034137 (published on May 08, 2002) Korean Patent Publication No. 10-1995-0032970 (published on December 22, 1995) Korean Public Practice 20-2000-0007983 (Published May 06, 2000)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a structure capable of reducing manufacturing cost of a piston rod for a floor hinge while preventing deterioration of function, The present invention provides a method of manufacturing a piston rod for a floor hinge.

A piston rod body having a long hole formed therein for accommodating a spring and a small piston therein and having a pin hole and a groove for mounting the piston head on the rear side and a female threaded portion formed on the inner side of the front side, ,

A knuckle member having a male screw portion formed on an upper side and a lower knuckle portion formed on a front side thereof, a plate fixing pin hole and a roller seat groove formed on the front side thereof, a packing groove formed on the rear side thereof, A method of manufacturing a piston rod includes polishing a inner slit of a shimless pipe, forming a piston rod having a pin hole and a groove formed at the back thereof and having a female screw portion at the front thereof, A knuckle member having a packing groove and a male threaded portion formed on the rear side thereof is manufactured and the packing is coupled to a packing groove formed in the knuckle member and then the male threaded portion formed on the knuckle member is fastened to a female threaded portion formed on the piston rod body. .

According to the present invention, the manufacturing cost of the piston rod body used for the floor hinge is made of the seamless pipe, and the knuckle member is assembled, so that the manufacturing cost and the raw material cost can be reduced, ,

In addition, since the machining time of the product can be shortened and the productivity can be improved while greatly reducing the equipment cost, it is an invention that can be expected to achieve economical benefit.

1 is an overall perspective view of a piston rod for a floor hinge according to the present invention;
2 is an exploded perspective view of a piston rod for a floor hinge according to the present invention.
3 is an assembled cross-sectional view of a piston rod for a floor hinge according to the present invention

The construction of a piston rod for a floor hinge according to the present invention will be described in detail with reference to the following embodiments.

When the piston rod 10 for a floor hinge according to the present invention is constructed, the piston rod body 1 and the knuckle member 20 are separated and fixed to each other.

The piston rod main body 1 is provided with a slot 2 formed therein so that a spring and a small piston can be loaded therein. A pin hole 3 and a groove 5 for mounting the piston head are formed at the rear of the piston rod main body 1, A female screw portion 4 for fastening the knuckle member is formed,

The knuckle member 20 has a plate seating portion 21 formed at the upper and lower sides of the front and a plate fixing pin hole 22 and a roller seating groove portion 23. The packing groove 24 and the male thread portion And the male threaded portion 25 of the knuckle member 20 formed by coupling the packing 26 to the packing groove 24 is fastened to the female threaded portion 4 formed on the piston rod body 1 will be.

Hereinafter, the operation of the piston rod for a floor hinge according to the present invention will be described in detail.

In the case of the piston rod 10 for the floor hinge according to the present invention, the spring and the small piston are also loaded into the elongated hole 2 formed in the inside of the piston rod body 1, and the piston head is engaged with the pin hole 3 A pin is coupled and fixed, a spring is coupled to the outside, and a plate is seated on a plate seating portion 21 formed on the upper and lower sides of the knuckle member 20 to fix the pin through the plate fixing pin hole 22 And the roller seat 23 is provided with sliding rollers so as to be used as a component part of the floor hinge and the piston rod 10 is operated by the operation of the cam to close the door.

However, since the piston rod body 1 is manufactured by the seamless pipe, the manufacturing cost and the machining time can be reduced.

Since the female screw portion 25 formed on the female screw portion 20 formed on the piston rod main body 1 constructed as described above is composed of a single body by fastening, A spring and a small piston are provided on the elongated hole 2 formed in the piston rod body 1 because the packing 26 is engaged with the packing groove 24, It is possible to prevent the oil from flowing out between the female screw portion and the male screw portion when oil (not shown) is charged and functions as a hydraulic pressure.

A method of manufacturing a piston rod for a floor hinge according to the present invention will be described.

First step

The shimless pipe is cut to a predetermined length to prepare a piston rod main body.

Second Step

And a slot formed so that a spring and a small piston can be loaded into the interior of the piston rod body.

Third step

A piston hole mounting pin hole and an annular groove are formed in the rear of the piston rod main body, and a female screw is machined on the inner surface of the front end of the piston rod main body to complete the piston rod main body. (Steps 2 and 3 may be omitted. )

Fourth step

A round bar is prepared in a predetermined size to form a plate seating portion on the upper and lower sides of the front side, and the plate fixing pin hole and the roller seating groove are processed.

Step 5

A packing groove and a male thread portion are formed at the rear side and the packing is coupled to the packing groove to complete the knuckle member.

Step 6

And the male screw portion formed on the knuckle member is fastened to the female screw portion formed on the piston rod body and assembled.

1: piston rod body 2: long hole
3: Pin hole 4: Female threads
5: groove 10: piston rod
20: Knuckle member 21: Plate seat part
22: plate fixing pin hole 23: roller seating groove portion
24: packing groove 25: male thread portion

Claims

When the piston rod is constructed, a long hole is formed in the piston rod body so that a spring and a small piston can be loaded therein. On the rear side, a pin hole and a groove for mounting the piston head are formed. On the inner surface of the front side, Further,
The knuckle member has a plate seating portion formed on the upper and lower sides of the knuckle member, a plate fixing pin hole and a roller seating groove portion, and a packing groove is formed at the rear of the knuckle member to connect the packing. Wherein the piston rod is fastened to a female screw portion formed on the rod body.

Cutting the seamless pipe to a predetermined length and polishing a slot formed so that a spring and a small piston can be loaded therein;
Forming a piston hole mounting pin hole and a female threaded portion for fastening the knuckle member to the inner surface of the front side and the rear surface of the piston rod;
Preparing a round bar with a predetermined size, forming a plate seating portion on the upper and lower sides of the front side, machining the plate fixing pin hole and the roller seating groove portion; And a knuckle member forming a packing groove and a male screw portion at the rear side;
And assembling the packing into the packing groove, and fastening the male screw formed on the knuckle member to the female screw formed on the piston rod body.