KR200298397Y1 - Automatic door closing device - Google Patents

Abstract

This paper is a device for automatically closing various doors, and more specifically, a device for automatically closing a door automatically by using a spring, a hydraulic flow control device, a speed adjusting bolt, and hydraulic oil.

To this end, this paper uses the restoring force of the spring to close the door, slowly closes the door using the flow of hydraulic oil, adjusts the amount of hydraulic oil using the hydraulic oil control device, and adjusts the speed at which the door is closed using the speed adjusting bolt. Use the fine speed adjustment bolt to adjust the final speed when the door is closed.

By using this device, the door is closed automatically by the spring and the door is closed slowly by the flow of hydraulic oil, so there is no need to close the door manually, and the door is closed slowly to prevent the door from being broken and noise. Not only can you control the speed, but if you open the door more than a certain angle, the door stays open.

Description

Automatic door closing device

This paper is a device that closes various doors automatically. More specifically, it is a device that automatically closes doors by using hydraulic flow control device, spring and speed adjusting bolt.

In general, the automatic door closing device using the link on the cylindrical body or the automatic door closing device installed vertically is used to close the door automatically. However, the automatic door closing device using the link on the cylindrical body is too heavy and complicated to be small or light. It was hard to apply to the door and to stop the door by manually operating the stop bar attached to the door to keep it open when the door was opened at an angle, and the automatic door closing device installed vertically was weak and did not close the door properly. The installation was complicated and inconvenient.

The present invention uses a hydraulic flow control device, a spring and a speed adjusting bolt to solve the above problems, so that the shape of the hydraulic cylinder can be applied to small to large doors, and when the door is opened at any angle, The purpose of this paper is to keep this open and to improve the aesthetics after installation. In order to achieve this purpose, the present invention uses a torsion spring to keep the door open when the door is automatically closed and opened at an angle, and a speed adjusting bolt is used to control the speed at which the door is closed. A fine speed adjustment bolt was used to adjust the final speed when the door was closed.

1 is a perspective view according to the present invention

2 is an internal structure diagram according to the present invention

Figure 3 is a detailed view of part number 4 of Figure 2

4 is a cross-sectional view taken along line C-C of FIG.

5 is a cross-sectional view taken along the line A-A of FIG.

6 is a cross-sectional view taken along the line D-D of FIG.

7 is an enlarged view of a portion B of FIG.

8 is an enlarged view of a portion F of FIG.

9 is a cross-sectional view taken along line E-E of FIG.

10 is an enlarged view of part number 9a 9b of FIG.

Figure 11 is an example of the present article installed on the door

(Top view from above when the door is closed)

Figure 12 is an example of installing this product on the door

(Top view from above when door is open)

FIG. 13 is a front view as seen from FIG. 12D; FIG.

<Description of the symbols for the main parts of the drawings>

1: cylinder 2: piston

3: piston rod 4: hydraulic flow control device

5: spring 6: torsion spring

7: wall lock device 8: door lock device

9a: speed adjusting bolt 9b: fine speed adjusting bolt

Hereinafter, described in detail by the accompanying drawings as follows. According to the present invention, a piston having a wall fixing device (7) equipped with a torsion spring (6) is assembled at one end of the cylinder (1) and having a hole (2a) in which a ball (2b) is mounted in the cylinder (1). 2) and the hydraulic flow control device (4) and the spring (5) is built-in, the piston (2) is attached to the piston rod (3) and the one end of the piston rod (3) door lock (7) is assembled The speed adjusting bolt 9a and the fine speed adjusting bolt 9b are assembled at one edge of the cylinder 1, and the hydraulic chambers are filled with the cylinder chambers 1a and 1b. Reference numerals 20a, 20b, and 20c are seals and 1d, 1e, and 1f are oil holes.

When the door 10 is opened in FIG. 11, the main tooth formed of the above components pushes the piston 5 and the piston rod 3 to the left in FIG. 2 to compress the spring 5. At this time, the ball 2b of the hole 2a is pushed to the right side in FIG. 6 so that the hydraulic oil in the cylinder room 1b quickly exits the cylinder room 1a. At this time, when the hydraulic fluid flowing out of the cylinder chamber 1b flows into the cylinder chamber 1a, the hydraulic flow regulator 4 automatically moves to the left to match the hydraulic flow volume by the volume of the moved piston rod 3. In FIG. 12, when the door 10 is opened at an angle or more, the torsion spring 6 allows the door to be opened even when a person touches the door. When a person closes the door 10 while the door is open, or the person releases the door 10 with the door open at an angle or less, the piston is restrained by the restoring force of the spring 4 and the torsion spring 5 in FIG. (2) and the door 10 is closed as the piston rod 3 is pushed to the right, at which time the ball 2b of the hole 2a is pushed to the left by the flow of hydraulic oil so that the door 10 is closed slowly. (2a) is closed, and the hydraulic oil flows slowly from the cylinder chamber 1a to the cylinder chamber 1b through the oil hole 1e, the long hole 1c, the oil hole 1f and the id. Adjusting device (3) is pushed to the right automatically by hydraulic pressure. Adjust the speed adjusting bolt (9a) to adjust the speed at which the door is closed, and adjust the speed adjusting bolt (9b) to adjust the closing speed at the end. Turn it, that is, when the door is closed, the piston moves to the right. (2) after the last adjustment, and oil hole (1f) by the oil-hole (1f) speed control position by bolts (9a) by the movement is controlled by the fine speed control to the bolt (9b).

As described above, when the door is slowly closed by using the flow rate of the spring and hydraulic oil, and the door is opened at a certain position or more, the door is not closed but remains open, and when the door is opened within a certain position, the door is automatically closed slowly and at a certain position or more. When the door is open and a person closes the door a little, the door closes slowly and automatically adjusts the speed at which the door closes, and fine speed adjustment is possible until the door is completely closed just before the last close and the door is not impacted. It can be used for a long time and prevents noise, and its simple structure makes it light in weight, good in appearance and can be applied from small to large doors.

Claims (1)

Hydraulic flow control device (4) for adjusting the flow rate of hydraulic oil inside the cylinder (1) and the spring (5) is mounted to give the energy to close the door and the closing force when the door is opened more than a certain position The torsion spring (6) is mounted on the wall fixing device (7) and the speed adjusting bolt (9a) and the fine speed adjusting bolt (9b) are provided at one edge of the cylinder (1) to adjust the speed at which the door is closed. Automatic closing device, characterized in that mounted.