KR200296662Y1 - 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. Adjust it. .

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 {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 the door is opened at an angle, and a speed adjusting bolt is used to control the speed at which the door is 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 a cross-sectional view taken along the line E-E of FIG.

Fig. 9 is a view of the present article installed on the door (front view from the front)

Figure 10 is a view of installing this product on the door (top view from above)

Figure 11 is a view when opening the door to install the product (top view from above)

<Explanation of symbols for main parts of drawings>

1: cylinder 2: piston

2a: hole 2b: ball

3: piston rod 4: hydraulic flow control device

5: spring 6: torsion spring

7: wall lock device 8: door lock device

9: Speed adjusting bolt 10: Door

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 9 is assembled at one edge of the cylinder 1, and hydraulic oil is filled in the cylinder chambers 1a and 1b. Reference numeral 20 (a) (b) (c) is a seal and 1 (d) 1 (e) is an oil hole.

When the door 10 is opened in FIG. 9, the main tooth formed of the above components pushes the piston 5 and the piston rod 3 to the right in FIG. 2 to compress the spring 5. At this time, the ball 2b of the hole 2a is pushed to the left side in FIG. 6 so that the hydraulic oil in the cylinder room 1a quickly exits the cylinder room 1b, the hole 2a opens wide, and the hydraulic oil flows quickly so that the door opens quickly. At this time, the hydraulic flow rate of the hydraulic oil exiting the cylinder chamber 1a is greater than the hydraulic flow rate flowing into the cylinder chamber 1b, so that the hydraulic flow rate controller 4 is automatically pushed to the left in FIG. The flow amount equals the hydraulic flow rate entering the cylinder chamber 1b to the same as the hydraulic flow rate exiting the cylinder chamber 1a. In FIG. 11, when the door 10 is opened at an angle or more, a human torsion spring 6 causes the human hand to move out of the door. The door is open even when the door is open. If the person closes the door 10 with the door open or if the person releases the door 10 with the door open at an angle, the spring 4 and the torsion spring in FIG. (5) to the resilience As the piston 2 and the piston rod 3 are pushed to the left, the door 10 is closed. At this time, the ball 2b of the hole 2a is pushed to the right by the flow of hydraulic oil so that the door 10 is closed slowly. The temporary hole 2a is closed, and the hydraulic oil flows slowly from the cylinder chamber 1b to the cylinder chamber 1a through the long hole 1c. The required hydraulic flow rate in the cylinder chamber 1a is larger than that from the cylinder chamber 1b. The hydraulic oil regulator 3 is automatically pushed to the right by hydraulic pressure to equalize the flow rate coming out of the cylinder chamber 1b with the flow rate entering the cylinder chamber 1a to adjust the speed at which the door is closed. Turn the adjusting bolt (9) to adjust the size of the oil hole (1d) to adjust the speed at which the door (10) closes,

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 is left open. When the door is open and a person closes the door a little, the door closes slowly and automatically adjusts the speed of closing, it can be used for a long time without impacting the door, it can prevent the noise, and the weight is simple because of the simple structure. It is small and 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 (9) is mounted on one edge of the cylinder (1) to adjust the speed at which the door is closed. 1b) is an automatic door closing device, characterized in that the hydraulic oil is filled and the shape is a hydraulic pneumatic cylinder shape.