KR20010027832A - Auto hinge - Google Patents

Abstract

PURPOSE: An automatic hinge is provided to close a door slowly and automatically while the hinge has the function of a door closer or a door checker. CONSTITUTION: Several hinge-knuckles(108,110) are installed between hinge-plates(102,104). The hinge-plate(102) is installed in a doorframe, and the hinge-plate(104) is installed in a door. An upper cap(112) is fixed in the upper part of the hinge knuckle(108). A pressing spring(114) is installed in the hinge knuckles, and supplies the torque of the door. A convert head(116) is installed in the hinge knuckle by a guide hole(116b) and a guide pin(118) fixed in the hinge knuckle(110). The convert head converts the vertical motion by the pressing spring into the rotating motion. A piston rod(122) is connected to the convert head, and has a piston-head rotated by the convert head. A cylinder(134) is installed in the hinge knuckle, is fixed in the hinge knuckle(108), and guides the piston head. In the upper part of the cylinder, a stopper upside(134a) stopping the door by a guide pin(120) and an inclined guide-groove(134b) for the guide pin are formed. A control pin(124) controls the oil pressure of the cylinder with the piston rod. A control valve(144) is installed in the piston head. A return valve(128) returns oil pressure, and the control valve is installed in a lower cap(140).

Description

Automatic Hinges {AUTO HINGE}

The present invention relates to an automatic hinge.

The present invention is to configure a device such that a door closer (door closer) or door check (door check) in the hinge so that the door can be automatically and quietly closed at a speed of the first, second, third, conventional door closer or The present invention relates to an automatic hinge that performs a function such as a door check but has a relatively simple structure, which significantly reduces manufacturing costs and improves aesthetics by simplifying the appearance of the door.

In addition, the present invention has a function of fixing (stopping) an open door, such as a door closer or a door check, to provide convenience of door use.

In addition, the automatic hinge of the present invention is very difficult to disassemble and provided with a security means to obtain a security effect by making a security sound when opening the door, such security means may be removed when not needed.

In general, at least two hinges are connected to the door, in particular the swinging door, to open and close the door.

The most common hinge for opening and closing the door as described above is composed of a movable side hinge plate installed on the door side and a fixed side hinge plate installed on the door frame side, and pin receiving hinge knuckles formed at the ends of these hinge plates are bound to each other. A hinge is formed by inserting a pin into the hinge knuckle.

Since the hinge configured as described above does not have any function other than the hinge function of the hinge itself, it is inconvenient to manually close the door when the door is closed.

In order to solve the above problem, a device is designed to automatically close the door by configuring a torsion spring inside the hinge, but since the door is closed by the spring force, the speed is accelerated by the return force of the spring when the door is closed. As the door is closed at a very high speed, it is dangerous and there is no inconvenience in using the door because there is no means for fixing the door to the hinge itself when the door is opened.

To solve this problem, a door closer or door check is installed separately from the hinge. It is equipped with a stopper function to adjust the closing speed of the door by using hydraulic pressure or to fix the door when the door is opened, so that the door can be opened and closed automatically.

However, in the case of the door closer or the door check, since it is attached and used separately from the hinge installed in the door, an additional cost other than the hinge cost is generated, and it protrudes from the door to hinder the appearance of the door and at the same time occupy space. There is a problem.

The present invention was devised to solve the above problems of the prior art, the hinge is installed between the door and the door frame has a basic function of opening and closing the door, the door is automatically closed while adjusting the speed and at the same time The stopper function (stop function) is opened when the door is opened to provide convenience for use when opening and closing the door, and the security function is performed when the door is opened to protect human life and property, and at the same time, the configuration is very simple according to the manufacturing cost The purpose of the present invention is to provide an automatic hinge that greatly reduces the cost and separates a conventional attachment such as a door closer or a door check, thereby improving the appearance of the door.

In order to achieve the above object, the present invention provides a fixed side hinge plate provided on the door frame side, a movable side hinge plate installed on the door side, and a plurality of cylinders formed on the opposite ends of the hinge plate to bind the hinge plates to each other. Hinge knuckles,

An upper cap fixed to an upper portion of the hinge knuckle,

Compression spring installed in the hinge knuckle to provide the rotational force of the door,

A switching head installed in the hinge knuckle to receive the repulsive force of the compression spring and installed through guide pins and guide holes fixed to the hinge knuckle to convert vertical movement by the compression spring into rotational movement;

A piston rod having a piston head connected to the lower portion of the switch head via a guide pin to rotate together with the up and down movement of the switch head,

The stopper is fixed through the hinge hinge knuckle and is installed by a lower cap to guide the piston head, and an upper part of the stopper which stops the door by the guide pin and an opposite bevel induction guided to the guide pin formed from the upper part of the stopper. Grooved cylinder,

Sealing assembly in the hollow portion of the piston rod is a hydraulic control pin for controlling the hydraulic oil in the cylinder with the piston rod,

It is characterized in that it comprises a return valve and a safety valve and a control valve installed in the lower cap is installed on the piston head to return the oil pressure.

In another aspect, the present invention is a security pin protrudingly fixed through a fixing hole drilled in the fixed side hinge plate and having a locking jaw elastically installed security pin,

Guide pipe installed through the back of the hole drilled on the movable side fixed plate,

A torsion spring installed in the guide pipe to be rotated with a pin and having a locking end that is elastically engaged with and detached from the locking jaw;

It is provided at the end of the torsion spring is characterized by providing a security means consisting of a striking weight hitting the inner wall of the door.

In addition, the present invention is a fixed side hinge plate installed on the door frame side and the movable side hinge plate installed on the door side and a plurality of hinge knuckles formed in a cylindrical shape on the opposite end of the hinge plate to bind each other hinge plate,

An upper cap and a lower cap fixed to upper and lower portions of the hinge knuckle,

It is installed in the hinge knuckle and is fixed by the torsion spring and the movable side hinge knuckle and the pin that provides the rotational force of the door, and receives the torsional force of the torsion spring, and the stationary slope and the first, second, and third friction surfaces Formed friction plate head,

Friction that is installed in the hinge knuckle and friction friction portion of the friction plate head and the first, second, third friction surface contacting the slide slit is guided to the guide pin fixed to the hinge knuckle to be installed up and down Pinhead,

Compression spring is installed in the friction pin head to maintain a constant friction between the friction pin head and the friction plate head during the up and down movement of the friction pin head,

The pressure plate is installed through the friction plate head, the friction pin head and the lower cap to adjust the compression force of the compression spring, the pressure adjusting bolt for adjusting the friction force of the friction plate head and the friction pin head and a spring seat for fixing it.

In addition, the present invention is a fixed side hinge plate installed on the door frame side and the movable side hinge plate installed on the door side and a plurality of hinge knuckles formed in a cylindrical shape on the opposite end of the hinge plate to bind each other hinge plate,

An upper cap fixed to an upper portion of the hinge knuckle,

Compression spring installed in the hinge knuckle to provide the rotational force of the door,

A switching head installed in the hinge knuckle to receive the repulsive force of the compression spring and installed through guide pins and guide holes fixed to the hinge knuckle to convert vertical movement by the compression spring into rotational movement;

A piston connected to the lower part of the switching head via a guide pin to rotate together according to the up and down movement of the switching head and to realize the first, second and third speeds when the door is closed;

A switching guide head having a stopper upper surface installed in the hinge knuckle and stopping at a door by a guide pin at an upper portion thereof, and a counter bevel induction groove formed from an upper surface of the stopper and guided to the guide pin;

The lower cap which seals the switching guide head and the hydraulic chamber is formed and the piston is inserted into the cylinder by sliding,

A ring cap is assembled to the threaded portion of the lower cap and a projection is formed on the bottom surface and the control valve for connecting and disconnecting the flow path of the hydraulic chamber and the hydraulic storage chamber is constrained in the threaded portion of the lower cap by the ring cap to allow the movement of the hydraulic oil to the inner diameter ,

The screw is assembled to the lower cap to adjust the flow rate of the hydraulic pressure at the same time to finely flow the flow path to the hydraulic chamber and the hydraulic storage chamber,

It is characterized in that it comprises a safety valve installed in the piston to communicate with the hydraulic oil in the hydraulic chamber directly from the hydraulic chamber in case of emergency.

In addition, the present invention is a fixed side hinge plate installed on the door frame side and the movable side hinge plate installed on the door side and a plurality of hinge knuckles formed in a cylindrical shape on the opposite end of the hinge plate to bind each other hinge plate,

An upper cap fixed to an upper portion of the hinge knuckle,

Compression spring installed in the hinge knuckle to provide the rotational force of the door,

A switching head installed in the hinge knuckle to receive the repulsive force of the compression spring and installed through guide pins and guide holes fixed to the hinge knuckle to convert vertical movement by the compression spring into rotational movement;

A piston which is connected to the lower part of the switching head via a guide pin and serves as a piston rod which rotates together according to the up and down movement of the switching head,

A stopper upper surface which is installed in the hinge knuckle and is fixed to the fixed side hinge knuckle, the upper portion of which is stopped by a guide pin connecting the switching head and the piston, and is formed from the upper surface of the stopper and guided to the guide pin. Cylinder with inclined guide groove,

A lower cap sealing the lower portion of the cylinder and constituting the hydraulic chamber together;

Hydraulic control pin is installed through the control seat fixed in the cylinder to control the speed of the door by adjusting the amount of pressure oil movement,

A control rod which is installed through a hole having a guide flow path formed in the center of the control sheet and an inner diameter formed at a lower portion of the piston to realize first, second and third speeds when the door is closed;

The control rod around the small diameter portion is characterized in that it comprises a control ring which is moved by the high pressure oil when the door is suddenly opened and returned by the first and second compression springs in normal operation, and a snap ring installed below.

In addition, the present invention is a fixed side hinge plate installed on the door frame side and the movable side hinge plate installed on the door side and a plurality of hinge knuckles formed in a cylindrical shape on the opposite end of the hinge plate to bind each other hinge plate,

An upper cap fixed to an upper portion of the hinge knuckle,

Compression spring installed in the hinge knuckle to provide the rotational force of the door,

A switching head installed in the hinge knuckle to receive the repulsive force of the compression spring and installed through guide pins and guide holes fixed to the hinge knuckle to convert vertical movement by the compression spring into rotational movement;

The piston is connected to the lower portion of the switching head via a guide pin to move together in accordance with the up and down movement of the switching head, the lower piston is configured with a piston head,

A stopper upper surface which is installed in the hinge knuckle and is fixed to the fixed side hinge knuckle, the upper portion of which is stopped by a guide pin connecting the switching head and the piston, and is formed from the upper surface of the stopper and guided to the guide pin. Cylinder with inclined guide groove,

A lower cap sealing the lower portion of the cylinder and constituting the hydraulic chamber together;

Control rod is inserted to slide through the inner diameter of the piston head to implement the first, second, third speed when the door is closed, and serves as a safety valve,

Screw assembly through the hollow portion of the control rod is characterized in that it comprises a hydraulic adjustment pin for adjusting the speed of the door by adjusting the amount of movement of the pressure oil.

In addition, the present invention is a fixed side hinge plate installed on the door frame side and the movable side hinge plate installed on the door side and a plurality of hinge knuckles formed in a cylindrical shape on the opposite end of the hinge plate to bind each other hinge plate,

An upper cap fixed to an upper portion of the hinge knuckle,

Compression spring installed in the hinge knuckle to provide the rotational force of the door,

A switching head installed in the hinge knuckle to receive the repulsive force of the compression spring and installed through guide pins and guide holes fixed to the hinge knuckle to convert vertical movement by the compression spring into rotational movement;

A stopper upper surface formed at the fixed side hinge knuckle and facing each other to guide the guide pins to stop the door, and formed by a stopper guide groove formed from the upper surface of the stopper and guided to the guide pin. Head Guide,

A first control groove, a second control block portion, and a third, which are screwed to the fixed side hinge knuckle, and implements the first, second, and third speeds of the door by blocking and allowing the movement of the hydraulic oil to the inner diameter of the hydraulic chamber therein. A control groove is formed, the lower cap of the hydraulic chamber is sealed with a sealing cap,

A piston which is connected to the lower part of the switching head, serves as a piston rod, and has a hollow part and a flow path formed therein, and a piston head fixed to the lower part of the piston,

A hydraulic control pin installed on the piston head and having a control means to adjust the speed of the door by adjusting the amount of pressure oil movement;

And a control ring installed through the snap ring on the shaft of the piston head to block and allow the flow of hydraulic pressure in relation to the first control groove, the second control clogging portion, and the third control groove formed in the lower cap. It is done.

1 is an exploded perspective view of an automatic hinge of an embodiment of the present invention.

Figures 2a, 2b, 2c, 2d is an illustration of the working state as the assembled cross-sectional view of FIG.

Figure 3a and Figure 3b is a plan view showing the configuration and operation of the security means installed on the hinge plate of the present invention.

Figure 4 is an exploded perspective view of the automatic hinge 2 embodiment of the present invention.

Figures 5a, 5b, 5c, 5d is an illustration of the working state as the assembled cross-sectional view of FIG.

Figure 6 is an exploded perspective view of the automatic hinge of an embodiment of the present invention.

Figures 7a, 7b, 7c, 7d is an illustration of the working state as the assembled cross-sectional view of FIG.

Figure 8 is an exploded perspective view of the automatic hinge of an embodiment of the present invention.

9A, 9B, 9C, 9D, and 9E are sectional views of the assembly of Fig. 8, showing an example of an operating state.

Figure 10 is an exploded perspective view of the automatic hinge of the fifth embodiment of the present invention.

11A, 11B, 11C, and 11D are sectional views of the assembly of FIG.

Figure 12 is an exploded perspective view of the automatic hinge of an embodiment of the present invention.

Figures 13a, 13b, 13c, 13d is an illustration of the working state as the assembled cross-sectional view of FIG.

<Description of the code | symbol about the principal part of drawing>

100, 200, 300, 400, 500, 600: Automatic hinge

102, 202, 302, 402, 502, 602: fixed side hinge plate

104, 204, 304, 404, 504, 604: movable side hinge plate

108, 110, 208, 210, 308, 310, 408, 410, 508, 510, 608, 610: hinge knuckle

112, 212, 312, 412, 512, 612: upper cap

114, 226, 314, 414, 514, 542, 614 compression spring

116, 316, 416, 516, 616: conversion head

Guide pin: 118, 120, 230, 318, 320, 418, 420, 518, 520, 618, 620

122: piston rod

124, 332, 432, 534, 626: hydraulic control pin

126, 524, 624: piston head

128: Return valve

130, 324: Safety valve

134, 426, 528: cylinder

140, 216, 328, 428, 530, 628: lower cap

144, 336: control valve

148: door frame

152: door

156: security pin

160: bending spring

162: guide pipe

164, 224: torsion spring

168: hitting weight

220: friction plate head

222: friction pin head

234: Pressure adjusting bolt

322, 422, 522, 622: piston

326: conversion guide head

334 ring cap

430: Control Sheet

434, 532: control rod

436, 538, 630: control

440: first compression spring

442: second compression spring

623: conversion head guide

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

Figure 1 is an exploded perspective view of an automatic hinge of an embodiment of the present invention, Figures 2a, 2b, 2c, 2d is an illustration of the operating state as an assembled cross-sectional view of FIG.

Reference numeral 100 denotes the overall configuration of the automatic hinge.

Reference numeral 102 denotes a fixed side hinge plate installed on the door frame side and fixed at all times, and reference numeral 104 denotes a movable side hinge plate installed on the door side and moving together when opening and closing the door.

A plurality of screw holes 106 are drilled in the fixed side hinge plate 102 and the movable side hinge plate 104 and fixed to the door frame and the door, respectively, with screws.

In order to bind the fixed side hinge plate 102 and the movable side hinge plate 104 to each other, a plurality of hinge knuckles 108 and 110 are formed at each end thereof.

On the other hand, the hinge plate (102, 104) is provided with a security means for making a sound when opening the door, which will be described later.

Reference numeral 112 is screwed to the fixed side hinge knuckle 108 as an upper cap, reference numeral 114 is a compression spring providing a turning force of the door, and 116 is a switching head.

The switching head 116 is formed in a cylindrical shape having a stepped outer end, and a support step 116a supporting the compression spring 114 is formed therein, and guide holes 116b penetrating to face each other in the vertical direction. The guide pin 118 is installed through the guide hole 116b and the guide pin 118 is fixed to the hole 110a formed opposite to the movable side hinge knuckle 110.

Accordingly, the switching head 116 is rotated together with the movable side hinge knuckle 110 when the door is opened, and moves up and down according to the repulsive force of the compression spring 114, wherein the guide hole 116b moves through the guide pin 118. ) Will be guided to move the distance is limited.

A hole 116c is formed in the lower portion of the switching head 116 so that the piston rod 122 is connected via the guide pin 120 installed through the hole 116c, and the hollow portion of the piston rod 122 122a) is provided with a hydraulic adjustment pin 124 to allow the movement of the pressure oil through the piston rod 122 and to adjust the speed of the pressure oil to adjust the speed of the door.

The piston rod 122 is formed with a reduction passage 122b, a speed regulating groove 122c, and first and second speed regulating passages 122d and 122e passing through the hollow portion 122a, and a piston rod 122 The piston head 126 formed together in the return valve 128 and the safety valve 130 consisting of a spring and a ball is installed.

The hydraulic control pin 124 includes a plurality of threads 124d and a plurality of threads 124d screwed to the secondary speed control groove 124c having the primary speed control groove 124a and the flow path groove 124b and the piston rod 122. It consists of an O-ring groove 124e and a driver groove 124f.

Accordingly, the hydraulic control pin 124 is inserted through the hollow portion 122a of the piston rod 122 so that the threaded portion 124d is screw-assembled and sealed by the O-ring 132.

Reference numeral 134 denotes a cylinder.

The cylinder 134 is installed in the hinge knuckles 108 and 110 and is fixed to the fixed side hinge knuckles 108 by fixing means such as pins or welding, and a lower portion thereof is connected to the lower cap 140 through an O-ring 136. Sealing is fixed, the rod seal 142 is installed in the middle of the cylinder 134 is sealed when the piston rod 122 moves up and down, the upper stop of the door by the guide pin 120 on the cylinder 134 The stopper upper surface 134a to be formed is formed, and the opposite inclined surface guide groove 134b formed from the stopper upper surface 134a to guide the guide pin 120 is formed. In addition, a plurality of oil rings 138 are installed in the upper inner diameter portion of the lower cap 140, and a control valve 144 is formed in communication with the speed adjusting groove 122c of the piston rod 122.

In the drawings, reference numeral 146 is screwed to the lower cap 140 as a plug blocking the hollow portion of the lower cap 140.

In the above, it is preferable to install the bushing together with the guide pins 118 and 120 to reduce contact friction.

Referring to the effect by the automatic hinge 100 of an embodiment of the present invention configured as described above are as follows.

Figure 2a shows the stationary state of the automatic hinge 100 as the door is open.

That is, the fixed side hinge plate 102 is kept fixed at the door frame side, and the movable side hinge plate 104 fixed at the door side is positioned between about 90 ° and 180 ° with the door open.

In the above state, the compression spring 114 maintains the compressed state, and the switching head 116 and the piston rod 122 as a whole are in a raised state, and are located in the guide hole 116b of the switching head 116. The guide pin 118 is positioned below the guide hole 116b, and the guide pin 120 connecting the switching head 116 and the piston rod 122 to the top surface 134a of the cylinder 134. It is placed in a position.

As a result, the guide pin 120 is placed on the stopper upper surface 134a of the cylinder 134 when the movable side hinge plate 104 is positioned between about 90 ° and 180 °, thereby maintaining the door in a stopped state. In this case, the hydraulic pressure is not generated.

2B illustrates a state in which the automatic hinge 100 is closed at the first speed in a state where the door is opened.

In other words, the fixed hinge plate 102 is fixed at the door frame side, and the movable hinge plate 104 fixed at the door side is closed from about 90 ° to 30 ° while the door is closed.

The movable hinge plate 104 is rotated and the switching head 116 connected to the hinge knuckle 110 of the movable hinge plate 104 by the guide pin 118 is rotated so that the rotation angle of the door is within 90 °. While the compression spring 114 is expanded by the repulsive force, the guide pin 120, which was placed on the top surface 134a of the cylinder 134, rotates together with the switching head 116 to escape the top surface 134a. Entering the inclined induction groove 134b is moved downward. At this time, the hydraulic oil in the cylinder 134 passes through the first and second speed regulating passages 122d and 122e of the piston rod 122 and the flow path groove 124b and the secondary speed regulating groove 124c of the hydraulic control pin 124. And it is reduced to the reduction passage 122b through the hollow portion 122a of the piston rod 122 through the primary speed adjusting groove 124a to generate a low pressure inside the cylinder 134.

As described above, the first and second speed regulating passages 122d and 122e of the piston rod 122 are all opened, so that the door is quickly closed in a section between about 90 ° and 30 °.

Figure 2c shows a state in which the automatic hinge 100 is closed at a second speed in the open state.

In other words, the fixed hinge plate 102 is fixed at the door frame side, and the movable hinge plate 104 fixed at the door side is closed from about 30 ° to 10 ° while the door is closed.

As the guide pin 120 rotates together with the switching head 116 by the continuous repulsive force of the compression spring 114, the guide pin 120 continues to move downward through the inclined guide groove 134b, so that the piston rod The second speed regulating flow passage 122e of the 122 is positioned on the inner diameter wall 144a of the control valve 144 adjacent thereto so as to be clogged, so that the pressurized oil opens the first speed regulating flow passage 122d of the cylinder rod 122. Reduction flow path 122b through the hollow portion 122a of the piston rod 122 through the flow path groove 124b and the secondary speed control groove 124c of the hydraulic control pin 124 and the primary speed control groove 124a. Is reduced to reduce the rotation speed of the door.

As described above, only the first speed control flow passage 122d of the piston rod 122 is opened, and the second speed section is made relatively short, and the door has a slow speed in the section between about 30 ° and 10 °. 2 speed).

2D illustrates a state in which the automatic hinge 100 is closed at a third speed in a state where the door is opened.

That is, the fixed hinge plate 102 is fixed at the door frame side, and the movable hinge plate 104 fixed at the door side reaches the 0 ° starting point from about 10 ° while the door is closed. .

As the guide pin 120 rotates together with the switching head 116 by the continuous repulsive force of the compression spring 114, the guide pin 120 continues to move downward through the inclined guide groove 134b, so that the piston rod The second speed regulating passage 122e of the 122 is in communication with the flow passage 144b of the control valve 144 adjacent thereto so that the pressure oil passes through the first and second speed regulating passages 122d and 122e of the cylinder rod 122. Through the hollow portion 122a of the piston rod 122 through the flow path groove 124b and the secondary speed control groove 124c and the primary speed control groove 124a of the hydraulic control pin 124 through It is reduced to 122b to increase the rotation speed of the door.

As described above, the first speed regulating passage 122d of the piston rod 122 is opened and the second speed regulating passage 122e is opened through the control valve 144, so that the door is opened in a section of about 10 ° to 0 °. It closes at high speed (3rd speed). As a result of this high speed, the latch bolt installed in the door lock (not shown) is locked.

After the closing operation of the door is completed as described above, the opening operation of the door is performed in the reverse order of the operation, in which case the return valve 128 installed in the piston head 126 is opened to release the hydraulic pressure. 3 speed is released.

If, during the opening of the door, the opening operation of the door stops, the return valve 128 is automatically locked, and at that position, the return valve 128 is reduced to the operation of the first speed or the second speed or the third speed as described above. Will be done automatically.

In addition, when the door is suddenly opened and closed, the safety valve 130 installed in the piston head 126 is operated (opened operation), thereby preventing failure of each component or the like. After the reduction to the normal operation of the door safety valve 130 is locked.

And to adjust the opening and closing speed of the door, loosen or tighten the hydraulic adjustment pin 124. That is, tightening the hydraulic control pin 124, the flow rate of the flow is reduced, the overall speed of the first, second, third and third speeds are slowed, and when the hydraulic control pin 124 is released, the flow rate of the flow increases, the first, 1,2,3 The overall speed of the stomach is faster, and when the hydraulic control pin 124 is opened to the maximum, the functions of the first, second, and third speeds are all released.

In the release state of the first, second, and third speeds, only the hinge function and the security function described later are maintained.

Figure 3a and Figure 3b is a plan view showing the configuration and operation of the security means installed on the hinge plate of the present invention.

As shown, the fixed side hinge plate 102 is fixed to the door frame 148 by a plurality of screws 150, and the movable side hinge plate 104 is fixed to the door 152 by a plurality of screws 154. The automatic hinge 100 is installed so as to be opened and closed around the hinge knuckles 108 and 110.

The security pin 156 is fixed to the fixed side hinge plate 102 by fixing means such as a split pin 158 through a fixing hole 102a, and the security pin 156 of the movable side hinge plate 104 is fixed. Protruding position toward the hole (104a), through the plurality of spring fixing holes (156a) formed in the anti-theft pin 156 is installed in a substantially rectangular bending spring 160 is fixed.

In addition, a guide pipe 162 accommodated in the door 152 is fixed to a rear surface of the hole 104a drilled in the movable side hinge plate 104, and a torsion spring 164 having a rod shape is fixed to the guide pipe 162. It is installed to rotate with the pin 166.

One end of the torsion spring 164 is formed with a locking end 164a so that the locking end 164a is caught by the locking jaw 160a of the bending spring 160, and a door (2) is provided at the other end of the torsion spring 164. Strike weight 168 hitting the inner wall 152a of the 152 is provided and configured.

Referring to the effect of the security means configured as described above are as follows.

3A illustrates a state in which the door 152 is closed. At this time, the locking end 164a of the torsion spring 164 is caught by the locking jaw 160a of the bending spring 160 installed on the security pin 156. It will be maintained, in this case the striking weight 168 is not to operate.

In addition, in the above state, both the hinge plates 102 and 104 are connected to the security pin 156, so that the door 152 is not opened even when the hinge is disassembled or cut, thereby maintaining the security state.

When the door 152 is opened as shown in FIG. 3B in the above state, the door 152 rotates about the hinge knuckles 108 and 110, and thus the movable hinge plate 104 is fixed to the hinge plate 102. The torsion spring 164a of the torsion spring 164 is separated from the receiving end of the torsion spring 164 by receiving the elastic force from the locking jaw 160a of the bending spring 160, and the torsion spring accumulated in the torsion spring 164 is temporarily exerted. 164 rotates about the pin 166. As a result, the impact weight 168 installed on the torsion spring 164 hits the inner wall 152a of the door 152 to make a sound, thereby making it possible to know the intrusion from the outside.

Then, when the door 152 is closed again, the locking end 164a of the torsion spring 164 is elastically caught by the locking step 160a of the bending spring 160 to be in the initial security setting standby state as shown in FIG. 3A.

When the door 152 is closed as described above, it is not possible to release the impact sound generated by the impact weight 168, and maintains a state in which the impact sound may be generated even when the hinge is disassembled, dismantled, cut and forcibly opened.

However, if the security pin 156 is rotated about 45 ° before closing the door 152, the locking end 164a of the torsion spring 164 is not caught by the locking step 160a of the bending spring 160. It is possible to release the blow sound arbitrarily.

Figure 4 is an exploded perspective view of the automatic hinge of the second embodiment of the present invention, Figures 5a, 5b, 5c, 5d is an illustration of the operating state as an assembled cross-sectional view of FIG.

Reference numeral 200 denotes the overall configuration of the automatic hinge.

Reference numeral 202 denotes a fixed side hinge plate installed on the door frame side and fixed at all times, and reference numeral 204 illustrates a movable side hinge plate installed on the door side and moving together when opening and closing the door.

A plurality of screw holes 206 are drilled in the fixed side hinge plate 202 and the movable side hinge plate 204 to be fixed to the door frame and the door with screws or the like.

In order to bind the fixed side hinge plate 202 and the movable side hinge plate 204 to each other, a plurality of hinge knuckles 208 and 210 are formed at each end thereof.

On the other hand, the hinge plate 202, 204 is provided with a security means for sounding the security when opening and closing the door, which is the same as the configuration and effect of the security means described in the first embodiment, a description thereof will be omitted.

Reference numeral 212 is assembled and fixed to the upper hinge hinge knuckle 208 by a pin 214 or a screw, and reference numeral 216 denotes a lower cap by a pin 218 or a screw to the lower hinge knuckle 210. Assembly is fixed.

In the hinge knuckles 208 and 210, a friction plate head 220 and a friction pin head 222, which implement the stop function of the door and the first, second, and third speeds, are disposed, and the friction plate head 220 and the upper cap ( A torsion spring 224 is provided between the 212 to provide the rotational force of the door (that is, to provide the rotational force of the friction plate head 220), and the friction plate head between the friction pin head 222 and the lower cap 216. Compression spring 226 for maintaining a constant friction between the 220 and the friction pin head 222 is installed.

The torsion spring 224 has a torsion force and the upper bent portion 224a is fixed to the fixing groove 212a formed in the upper cap 212, and the lower bent portion 224b is formed in the friction plate head 220. It is fixedly installed in the fixing groove (220a).

And the friction plate head 220 is made of a cylindrical shape, the fixing hole 220b is opposed to the outer periphery of the cylindrical portion is fixed to the movable side hinge knuckle 210 by pins 228, the friction plate head 220 is When the door is opened, the torsion spring 224 receives the torsion force and rotates together, and the lower end surface of the friction plate head 220 is connected to the stop comb surface 220c and the first, second, and third friction surfaces ( 220d) (220e) and 220f are formed.

An upper portion of the friction pin head 222 is a friction protrusion 222a contacting the stationary comb surface 220c and the first, second and third friction surfaces 220d, 220e and 220f formed on the friction plate head 220. Slide slits 222b are formed around the cylindrical friction pin head 222 to face each other, and guide pins 230 fixed to the fixed side hinge knuckle 208 are positioned on the slide slits 222b. Guide the up and down movement of the friction pin head 222.

The compression spring 226 positioned between the friction pin head 222 and the lower cap 216 has a compression repulsion force and its upper bent portion 226a is fixed to the fixing groove 222c formed in the friction pin head 222. The lower bent portion 226b is fixedly installed in the fixing groove 232a formed in the spring sheet 232.

And pressure adjusting means for adjusting the frictional force of the friction plate head 220 and the friction pin head 222 is installed, which is the pressure adjusting bolt 234 through the friction plate head 220 and the friction pin head 222 Screwed to the spring seat 232 and the end is protruded from the lower cap 216, the protruding portion is formed by the adjustment hole 234a for adjusting the pressure adjusting bolt 234 is formed.

In the drawings, reference numeral 236 illustrates a plurality of friction rings inserted into the pressure adjusting bolt 234 to reduce friction with the contact surface of the friction plate head 220.

Referring to the operation and effect by the automatic hinge 200 of the second embodiment of the present invention configured as described above are as follows.

5A shows the stationary state of the automatic hinge 200 as the door is open.

That is, the fixed side hinge plate 202 is kept fixed at the door frame side, and the movable side hinge plate 204 fixed at the door side is positioned between about 90 ° and 180 ° with the door open.

In the above state, the torsion spring 224 has a torsion force and acts in the closing direction of the door, but the friction protrusion 222a formed on the friction pin head 222 has the repulsive force of the compression spring 226 and the friction plate head ( It is positioned on the stop comb surface 220c of the 220.

As such, when the movable hinge plate 204 is positioned between about 90 ° and 180 °, the torsion force of the torsion spring 224 and the repulsion force of the stop comb surface 220c and the compression spring 226 cancel each other and the door is stopped. Will be maintained.

5B illustrates a state in which the automatic hinge 200 is closed at a first speed in a state where the door is opened.

That is, the fixed hinge plate 202 is fixed at the door frame side, and the movable hinge plate 204 fixed at the door side is closed from about 90 ° to 30 ° while the door is closed.

The torsional force of the torsion spring 224 causes the movable side hinge plate 204 to rotate, and the friction plate head 220 connected to the hinge knuckle 210 of the movable side hinge plate 204 by a pin 228 rotates together. The first friction surface 220d is positioned at the friction protrusion 222a of the friction pin head 222. Accordingly, while the friction pin head 222 compresses the compression spring 226, the guide pin 230 fixed to the hinge knuckle 208 is guided to the slide slit 222b so that the friction pin head 222 moves downward. Done.

As described above, since the first friction surface 222d is flat, the door is quickly closed in a section between about 90 ° to 30 °.

5C illustrates a state in which the automatic hinge 200 is closed at the second speed in a state where the door is opened.

That is, the stationary side hinge plate 202 maintains the state fixed at the door frame side, and the movable side hinge plate 204 fixed to the door side is closed from about 30 degrees to 10 degrees while the door is closed.

As the friction plate head 220 continues to rotate due to the continuous torsion force of the torsion spring 224, the second friction surface 220e connected to the inclined surface from the first friction surface 220d is a friction protrusion of the friction pin head 222. Positioned at 222a is subjected to resistance to reduce the rotation speed of the door.

As described above, the friction protrusion 222a of the friction pin head 222 is subjected to resistance on the second friction surface 222e, and the second speed section is made relatively short, and the door is about 30 ° to 10 °. It will close at a slow speed (second speed) in the interval between.

5D illustrates a state in which the automatic hinge 200 is closed at a third speed in a state where the door is opened.

That is, the fixed hinge plate 202 is fixed at the door frame side, and the movable hinge plate 204 fixed at the door side reaches a starting point of about 10 ° to 0 ° while the door is closed. .

The friction plate head 220 is continuously rotated by the torsional force of the torsion spring 224 so that the third friction surface 220f connected from the second friction surface 220e to the reverse comb surface is friction of the friction pin head 222. Located in the protrusion 222a, the resistance is greatly reduced, thereby increasing the rotation speed of the door again.

As described above, the friction protrusion 222a of the friction pin head 222 is greatly reduced in resistance at the third friction surface 222f so that the door closes at a high speed (third speed) in a section of about 10 ° to 0 °. do. As a result of this high speed, the latch bolt installed in the door lock (not shown) is locked.

After the door closing operation is completed as described above, the door opening operation is performed in the reverse order of the operation.

And the closing speed adjustment of the door may be loosened or tightened through the adjusting hole 234a of the pressure adjusting bolt 234. That is, when the pressure adjusting bolt 234 is tightened, the compression spring 226 brings the friction plate head 220 and the friction pin head 222 into close contact with each other, thereby reducing the overall speed of the first, second, and third speeds, and the pressure adjusting bolt. When the 234 is released, the compression spring 226 makes the friction plate head 220 and the friction pin head 222 relatively less in contact with each other, thereby increasing the overall speed of the first, second, and third speeds.

In the above two embodiments, it is preferable to apply grease to the friction plate head 220 and the friction pin head 222 and each perturbation portion in order to eliminate noise due to friction and ensure smooth operation.

Figure 6 is an exploded perspective view of the automatic hinge of the third embodiment of the present invention, Figure 7a, 7b, 7c, 7d is an illustration of the operating state as an assembled cross-sectional view of FIG.

Reference numeral 300 denotes the overall configuration of the automatic hinge.

Reference numeral 302 denotes a fixed side hinge plate installed on the door frame side, and 304 denotes a movable side hinge plate installed on the door side and moving together when opening and closing the door.

A plurality of screw holes 306 are drilled in the fixed side hinge plate 302 and the movable side hinge plate 304 to be fixed to the door frame and the door, respectively, with screws or the like.

In order to bind the fixed side hinge plate 302 and the movable side hinge plate 304 to each other, a plurality of hinge knuckles 308 and 310 are formed at each end thereof.

On the other hand, the hinge plate 302, 304 is provided with a security means for sounding the security when opening and closing the door, which is the same as the configuration and effect of the security means described in the first embodiment, a description thereof will be omitted.

Reference numeral 312 is an upper cap screwed to the fixed side hinge knuckle 308 to support the compression spring 314 to be described later, reference 312a is a tightening groove that can use a tool when screwing the upper cap 312 Denoted at 314 is a compression spring for providing a rotational force of the door, and 316 is a switching head.

The switching head 316 is formed in a cylindrical shape having a stepped outer end, and a support step 316a supporting the compression spring 314 is formed therein, and guide holes 316b penetrating to face each other in the vertical direction. The guide pin 318 is installed through the guide hole 316b, and the guide pin 318 is fixed to the hole 310a formed opposite to the movable side hinge knuckle 310.

Accordingly, the switching head 316 is rotated together with the movable side hinge knuckle 310 when the door is opened, and moves up and down according to the repulsive force of the compression spring 314, wherein the guide hole 316b moves through the guide pin 318. ) Will be guided to move the distance is limited.

A hole 316c is formed in the lower portion of the switching head 316 so that the piston 322 serving as the piston rod is connected and fixed through the guide pin 320 installed through the hole 316c.

The piston 322 is sealed by a plug 323 formed therein with a hollow portion 322a thereon.

In addition, a plurality of flow paths 322b penetrating the hollow part 322a are formed in the piston 322, and the first, second, and third doors of the door are blocked by allowing and moving the hydraulic oil vertically around the piston 322. The first control groove 322c, the second control block portion 322d, and the third control groove 322e for forming the inside are formed, and the bottom portion of the piston 322 communicates with the hollow portion 322a to provide hydraulic pressure in an emergency. A safety valve 324 consisting of a case, a spring, a ball, and a cap is installed to pass the valve.

Reference numeral 326 denotes a switching guide head.

The switching guide head 326 is installed in the hinge knuckles 308 and 310 and is fixed to the fixed side hinge knuckle 308 by fixing means such as pins or welding, and a lower portion thereof seals with a lower cap 328 serving as a cylinder. It is screwed in, and the rod seal 330 is installed therein so that the oil pressure during the up and down movement of the piston 322 is sealed.

A stopper upper surface 326a for stopping the door is formed on the upper portion of the switching guide head 326 by the guide pin 320 connected to the switching head 316 and the piston 322. It is formed to form an opposite inclined inclined guide groove 326b is guided to guide pin 320 is formed.

The lower cap 328 is screw-assembled hydraulic adjustment pin 332 to control the speed of the door by adjusting the amount of pressure oil movement.

A hydraulic chamber 328a is formed in the lower cap 328, and the inner diameter 328b of the hydraulic chamber 328a is slightly larger than the outer diameter of the piston 322 to enable the movement of the hydraulic oil. At the upper portion of the seal 328a, a ring cap 334 is screwed (or forcedly fitted), and a control valve 336 is formed in the ring cap 334 to mediate and disconnect the flow path. 328 has a fastening groove (328c) is formed to use a tool when screwing it is configured.

In the control valve 336, the inner diameter 336a is in tight contact with the outer diameter of the piston 322, and a plurality of flow paths 336b are formed radially toward the center thereof, and the outer diameter 336c is lowered. The cap 328 has a smaller dimension than the screw inner diameter, and the ring cap 334 has a larger inner diameter 334a than the outer diameter of the piston to restrain the control valve 336 that permits and blocks the flow of hydraulic oil. And a projection 334b is formed on the bottom surface thereof, and the upper surface of the control valve 336 is contacted and spaced from the projection 334b according to the hydraulic oil so that the flow of the hydraulic oil is blocked and allowed.

The hydraulic adjustment pin 332 is an O-ring for sealing the flow path groove 332a for guiding the oil pressure and the threaded portion 332b screwed to the lower cap 328 and the flow path groove 332c formed in the threaded portion 332b. A groove 332d and a driver groove 332e for adjustment.

In the above, it is preferable to install the bushing together with the guide pins 318 and 320 to reduce contact friction.

Referring to the effect by the automatic hinge 300 of the third embodiment of the present invention configured as described above are as follows.

FIG. 7A illustrates the stationary state of the automatic hinge 300 as the door is opened.

That is, the fixed side hinge plate 302 is kept fixed at the door frame side, and the movable side hinge plate 304 fixed at the door side is positioned between about 90 ° and 180 ° with the door open.

In the above state, the compression spring 314 maintains the compressed state, and the switching head 316 and the piston 322 as a whole are in a raised state, where the guide spring 316b of the switching head 316 is positioned. The guide pin 318 is positioned below the guide hole 316b, and the guide pin 320 connecting the switching head 316 and the piston 322 to the top surface 326a of the switching guide head 326. It is placed in a position.

Accordingly, the guide pin 320 is placed on the stopper upper surface 326a of the switching guide head 326 when the movable side hinge plate 304 is positioned between about 90 ° and 180 ° with respect to the fixed side hinge plate 302. As a result, the door is kept in a stopped state, and hydraulic pressure is not generated at this time.

FIG. 7B illustrates a state in which the automatic hinge 300 is closed at the first speed in a state where the door is opened.

In other words, the fixed hinge plate 302 is fixed on the door frame side, and the movable hinge plate 304 fixed on the door side is closed from about 90 ° to 30 ° while the door is closed.

The movable hinge plate 304 is rotated, and the switching head 316 connected to the hinge knuckle 310 of the movable hinge plate 304 by the guide pin 318 is rotated so that the rotation angle of the door is within 90 °. While the compression spring 314 is expanded by the repulsive force, the guide pin 320, which was placed on the top surface 326a of the switch guide head 326, rotates together with the switch head 316, and the top surface of the stopper 326a. Off to enter the inclined induction groove 326b is moved downward.

At this time, as the piston 322 descends together, the first control groove 322c formed in the piston 322 passes through the control valve 336, and the pressure oil in the hydraulic chamber 328a is the inner diameter 328b of the hydraulic chamber 328a. As the pressure is applied to the control valve 336 by passing between the outer diameter of the piston 322 and the control valve 336, the control valve 336 moves upwards slightly, and the protrusion 334b having the upper surface formed on the lower surface of the ring cap 334. The oil pressure is sent to the flow rate storage chamber 326c formed between the piston 322 and the switching guide head 326 by being formed in close contact with the flow path through the first control groove 322c.

As the piston 322 is lowered as described above, the hydraulic pressure in the hydraulic chamber 328a flows to the hydraulic storage chamber 326c until the first control groove 322c passes the control valve 336. The hydraulic pressure in 328a flows to the hydraulic storage chamber 326c finely through the hydraulic control pin 332.

That is, the hydraulic oil in the hydraulic chamber 328a passes through the flow path groove 332c formed in the flow path groove 332a and the threaded portion 332b of the hydraulic control pin 332 and passes through the flow path hole 328d formed in the lower cap 328. Passes through the flow path groove 328f formed in the screw portion 328e of the lower cap 328 to flow into the hydraulic storage chamber (326c).

As described above, the pressure oil in the hydraulic chamber 328a flows simultaneously into the hydraulic storage chamber 326c through the first control groove 322c and the hydraulic control pin 332 formed in the piston 322, so that the door is about 30 to 30 degrees. It will close quickly in the interval between °. At this time, the amount of hydraulic pressure flowing to the hydraulic control pin 332 is less than the flow to the first control groove (322c) flows.

FIG. 7C illustrates a state in which the automatic hinge 300 is closed at the second speed while the door is opened.

That is, the fixed side hinge plate 302 is fixed in the door frame side, and the movable side hinge plate 304 fixed to the door side is closed from about 30 degrees to 10 degrees as the door is closed.

As the guide pin 320 rotates with the switching head 316 due to the continuous repulsive force of the compression spring 314, the guide pin 320 continues to ride the bevel induction groove 326b of the switching guide head 326. Direction, and the second speed section is made relatively short. At this time, the second control block 322d of the piston 322 passes through the inner diameter 336a of the control valve 336 so that the hydraulic pressure flows. In this case, the hydraulic oil in the hydraulic chamber 328a flows to the hydraulic storage chamber 326c through the hydraulic control pin 332, so that the rotation speed of the door is reduced.

As the pressure oil in the hydraulic chamber 328a continues to pressurize the control valve 336 as described above, the upper surface of the control valve 336 is in close contact with the protrusion 334b formed on the lower surface of the ring cap 334. As the inner diameter 336a of the control valve 336 is in contact with the second control block 322d of the piston 322 to block the passage of the hydraulic oil, the hydraulic oil passes only through the hydraulic adjustment pin 332. The door is closed at a slow speed (second speed) in a section between about 30 ° and 10 °.

FIG. 7D illustrates a state in which the automatic hinge 300 is closed at the third speed while the door is opened.

In other words, the fixed hinge plate 302 is fixed at the door frame side, and the movable hinge plate 304 fixed at the door side reaches the 0 ° starting point from about 10 ° while the door is closed. .

As the guide pin 320 rotates with the switching head 316 due to the continuous repulsive force of the compression spring 314, the guide pin 320 continues to ride the bevel induction groove 326b of the switching guide head 326. Will be moved in the direction.

At this time, as the piston 322 descends, the third control groove 322e formed in the piston 322 passes through the control valve 336. That is, as the pressure oil in the hydraulic chamber 328a continues to pressurize the control valve 336, the upper surface of the control valve 336 is in close contact with the protrusion 334b formed on the lower surface of the ring cap 334. The hydraulic oil in the hydraulic chamber 328a passes between the inner diameter 328b of the hydraulic chamber 328a and the outer diameter of the piston 322, and a flow path thereof is formed through the third control groove 322e to form the piston 322. Hydraulic pressure is sent to the flow rate storage chamber 326c formed between the switching guide heads 326.

As described above, the piston 322 is lowered so that the third control groove 322e passes through the control valve 336 so that the hydraulic pressure in the hydraulic chamber 328a flows into the hydraulic storage chamber 326c. Some of the hydraulic pressure in the flow through the hydraulic control pin 332 to the fine hydraulic storage chamber 326c at the same time.

Through the third control groove 322e and the hydraulic control pin 332 formed in the piston 322 as described above, the pressure oil in the hydraulic chamber 328a flows simultaneously into the hydraulic storage chamber 326c, so that the door is opened at about 10 °. It will close at high speed (3rd speed) at the starting point. As a result of this high speed, the latch bolt installed in the door lock (not shown) is locked.

After the closing operation of the door is completed as described above, the opening operation of the door is performed in the reverse order of the operation. In this case, the control valve 336 is operated downward by the hydraulic pressure of the hydraulic storage chamber 326c. As the upper surface of the control valve 336 is spaced apart from the protrusion 334b of the ring cap 334, the flow of hydraulic pressure flows to the radially formed flow path 336b through the outer diameter 336c of the control valve 336, so that the hydraulic chamber 328a. As the piston 322 rises and the compression spring 314 is compressed at the same time as it enters the hydraulic chamber 328a through the inner diameter 328b and the outer diameter of the piston 322, the opening angle of the door is 90 °. When it is beyond the guide pin 320 is located on the stopper upper surface (326a) of the switching guide head 326, the door is maintained in a stopped state as shown in Figure 7a.

In the opening operation of the door as described above, the speeds of the first, second and third speeds which were acted upon the closing of the door by the control valve 336 are released.

If, during the opening of the door, the opening operation of the door is stopped, it is reduced to the operation of the first speed, the second speed, or the third speed described above at that position, thereby automatically performing the automatic hinge function.

In addition, when the door is suddenly opened and closed, the safety valve 324 installed at the lower portion of the piston 322 is operated (opened operation) to directly communicate the hydraulic chamber 328a and the hydraulic storage chamber 326c. It is possible to prevent failures such as breakage. When the safety valve 324 is then reduced to the normal operation of the door is locked.

And to adjust the opening and closing speed of the door, loosen or tighten the hydraulic adjustment pin 332. That is, when the hydraulic control pin 332 is tightened, the flow rate decreases, and the overall speed of the first, second, and third speeds becomes slow. When the hydraulic control pin 332 is loosened, the flow rate increases, so that the flow rate increases. The overall speed of the stomach will be faster.

Figure 8 is an exploded perspective view of the automatic hinge of the fourth embodiment of the present invention, Figures 9a, 9b, 9c, 9d, 9e is an illustration of the operation state as an assembled cross-sectional view of FIG.

Reference numeral 400 denotes the overall configuration of the automatic hinge.

Reference numeral 402 denotes a fixed side hinge plate installed on the door frame side, and reference numeral 404 illustrates a movable side hinge plate installed on the door side and moving together when opening and closing the door.

A plurality of screw holes 406 are drilled in the fixed side hinge plate 402 and the movable side hinge plate 404 to be fixed to the door frame and the door with screws or the like.

In addition, a plurality of hinge knuckles 408 and 410 formed in a cylindrical shape are formed at each end to bind the fixed side hinge plate 402 and the movable side hinge plate 404 to each other.

On the other hand, the hinge plate 402, 404 is provided with a security means for sounding the sound when opening and closing the door, which is the same as the configuration and effect of the security means described in the first embodiment, a description thereof will be omitted.

Reference numeral 412 is screwed to the fixed side hinge knuckle 408 as the upper cap to support the compression spring 414 to be described later, reference numeral 412a is a fastening groove that can use a tool when screwing the upper cap 412 Denoted at 414 is a compression spring for providing a rotational force of the door, and 416 is a switching head.

The conversion head 416 is formed in a cylindrical shape having a stepped outer end, the support step 416a is formed therein to support the compression spring 414, the guide hole 416b penetrating facing each other in the vertical direction The guide pin 418 is installed through the guide hole 416b, and the guide pin 418 is fixed to the hole 410a formed opposite to the movable side hinge knuckle 410.

Accordingly, the switching head 416 is rotated together with the movable side hinge knuckle 410 when the door is opened, and moves up and down according to the repulsive force of the compression spring 414, and the guide hole 416b moves through the guide pin 418. ) Will be guided to move the distance is limited.

A hole 416c is formed in the lower portion of the switching head 416 so that the piston 422 serving as the piston rod is connected and fixed through the guide pin 420 installed through the hole 416c.

The piston 422 has a hydraulic storage chamber (422a) is formed therein.

Reference numeral 426 denotes a cylinder.

The cylinder 426 is installed in the hinge knuckles 408 and 410 and is fixed to the fixed side hinge knuckle 408 by fixing means such as pins or welding, and a lower portion thereof is screwed by a lower cap 428 and a seal. A stopper upper surface 426a for stopping the door is formed on the upper portion of the cylinder 426 by a guide pin 420 connecting the switching head 416 and the piston 422, and is formed from the upper surface of the stopper 426a. The opposite inclined induction groove 426b to which the guide pin 420 is formed is formed.

In the cylinder 426, a control sheet 430 having a guide flow path 430a is installed to be sealed by interference fitting or screwing, and the control sheet 430 controls the speed of the door by adjusting the amount of pressure oil movement. Hydraulic adjustment pin 432 is screwed.

The control rod 434 is positioned through a hole in which the guide passage 430a is formed in the center of the control sheet 430 and an inner diameter 422b formed in the lower portion of the piston 422.

The control rod 434 is a first control groove 434b is formed through the hollow portion (434a) and implements the first, second, third speed of the door by blocking and allowing the movement of the hydraulic oil vertically around the outer circumference, A second control block portion 434c and a third control groove 434d are formed, and a control ring 436 movable by a suddenly generated high pressure oil around the small diameter portion of the control rod 434 and a snap ring thereunder. 438 is provided, and between them, a first compression spring 440 of a small diameter and a second compression spring 442 of a large diameter are provided.

The first compression spring 440 is installed between the control ring 436 and the snap ring 438, the second compression spring 442 is between the control ring 436 and the upper surface 428a of the lower cap 428 Is installed on. The lower cap 428 is formed with a fastening groove 428b for using a tool when screwing it.

In the control rod 434, the outer diameter 434e is in tight contact with the inner diameter 422b of the piston 422.

The hydraulic control pin 432 is a flow path groove 432a for guiding the oil pressure through the flow path hole 430b formed in the control sheet 430 and a screw portion 432b screwed to the cylinder 426 and an O-ring groove for sealing. 432c and a driver groove 432d for adjusting the amount of hydraulic pressure.

The guide pins 418 and 420 are preferably provided with a bushing in order to reduce contact friction.

In the drawings, reference numerals 444 and 446 show O-rings for sealing.

Referring to the effect by the automatic hinge 400 of the fourth embodiment of the present invention configured as described above are as follows.

9A illustrates the stationary state of the automatic hinge 400 as the door is opened.

That is, the fixed side hinge plate 402 is kept fixed at the door frame side, and the movable side hinge plate 404 fixed at the door side is positioned between about 90 ° and 180 ° with the door open.

In the above state, the compression spring 414 maintains the compressed state, and the switching head 416 and the piston 422 as a whole are in a raised state, and are located in the guide hole 416b of the switching head 416. The guide pin 418 is located under the guide hole 416b, and the guide pin 420 connecting the switching head 416 and the piston 422 is located on the stopper upper surface 426a of the cylinder 426. It becomes a state.

As a result, the guide pin 420 is placed on the stopper upper surface 426a of the cylinder 426 when the movable side hinge plate 404 is positioned between about 90 ° and 180 ° with respect to the fixed side hinge plate 402. The door is to be stopped, the hydraulic pressure is not generated at this time.

9B illustrates a state in which the automatic hinge 400 is closed at the first speed in a state where the door is opened.

That is, the stationary side hinge plate 402 maintains the state fixed by the door frame side, and the movable side hinge plate 404 fixed to the door side is closed from about 90 degrees to 30 degrees while the door is closed.

The movable hinge plate 404 is rotated, and the switching head 416 connected to the hinge knuckle 410 of the movable hinge plate 404 by the guide pin 418 is rotated so that the rotation angle of the door is within 90 °. While the compression spring 414 is expanded by the repulsive force, the guide pin 420 placed on the stopper upper surface 426a of the cylinder 426 rotates together with the switching head 416 to escape the stopper upper surface 426a. Entering the inclined induction groove 426b is moved downward.

Accordingly, while the piston 422 is lowered together, the inner diameter 422b of the piston 422 passes through the control rod 434. At this time, the inner diameter 422b of the piston 422 passes the section of the first control groove 434b of the control rod 434, so that the hydraulic oil in the hydraulic chamber 426c of the cylinder 426 is the hydraulic storage chamber of the piston 422 ( 422a).

As the piston 422 descends as described above, the hydraulic pressure in the hydraulic chamber 426c flows to the hydraulic storage chamber 422a until the inner diameter 422b passes the first control groove 434b of the control rod 434. At the same time, the hydraulic pressure in the hydraulic chamber 426c flows into the hydraulic chamber 426d under the cylinder 426 finely through the hydraulic control pin 432.

That is, the hydraulic oil in the hydraulic chamber 426c passes through the flow path groove 432a of the hydraulic control pin 432 and flows through the flow path hole 430b formed in the control sheet 430 to the hydraulic chamber 426d below the cylinder 426. Will flow into.

As described above, the pressure oil in the hydraulic chamber 426c is simultaneously discharged through the first control groove 434b and the hydraulic control pin 432 formed in the control rod 434, so that the door is about 90 ° to 30 °. To close quickly. At this time, the amount of hydraulic pressure flowing to the hydraulic control pin 432 is less than the flow to the first control groove (434b) flows.

9C illustrates a state in which the automatic hinge 400 is closed at a second speed in a state in which the door is opened.

In other words, the fixed hinge plate 402 is fixed at the door frame side, and the movable hinge plate 404 fixed at the door side is closed from about 30 ° to 10 ° while the door is closed.

Continued repulsive force of the compression spring 414 causes the guide pin 420 to rotate with the switching head 416 so that the guide pin 420 continues on the inclined guide groove 426b of the cylinder 426 in the downward direction. The piston 422, which is moved together and connected to the guide pin 420, continues to descend, and the second speed section is made relatively short.

At this time, the inner diameter 422b of the piston 422 passes through the second control block 434c of the control rod 434 to temporarily block the flow of hydraulic pressure, and in this case, the hydraulic chamber through the hydraulic control pin 432. The hydraulic oil in 426c flows to the hydraulic chamber 426d under the cylinder 426, and the rotation speed of the door is decelerated.

As described above, the hydraulic oil in the hydraulic chamber 426c is the hydraulic control pin as the inner diameter 422b of the piston 422 is in contact with the second control block 434c of the control rod 434 to block the passage of the hydraulic oil. Only passage 432 permits the passage of the pressurized oil so that the door closes at a slow speed (second speed) in a section between about 30 ° and 10 °.

9D illustrates a state in which the automatic hinge 400 is closed at a third speed in a state where the door is opened.

In other words, the fixed hinge plate 402 is fixed at the door frame side, and the movable hinge plate 404 fixed at the door side reaches the 0 ° starting point from about 10 ° while the door is closed. .

Continued repulsive force of the compression spring 414 causes the guide pin 420 to rotate with the switching head 416 so that the guide pin 420 continues on the inclined guide groove 426b of the cylinder 426 in the downward direction. Will move.

Accordingly, as the piston 422 descends, the inner diameter 422b of the piston 422 passes through the third control groove 434d of the control rod 434 so that the hydraulic pressure in the hydraulic chamber 426c is transferred to the hydraulic storage chamber 422a. At the same time, the oil pressure in the oil pressure chamber 426c flows into the oil pressure chamber 426d under the cylinder 426 finely through the oil pressure adjusting pin 432.

As the piston 422 descends as described above, the inner diameter 422b passes through the third control groove 434d so that the hydraulic pressure in the hydraulic chamber 426c flows into the hydraulic storage chamber 422a. Hydraulic pressure in the flow through the hydraulic pressure adjustment pin 432 to the hydraulic chamber 426d at the same time.

Through the third control groove 434d and the hydraulic control pin 432 formed in the control rod 434 as described above, the pressure oil in the hydraulic chamber 426c flows simultaneously into the hydraulic storage chamber 422a and the hydraulic chamber 426d. The door is closed at high speed (3rd speed) in the interval of about 10 ° to 0 °. As a result of this high speed, the latch bolt installed in the door lock (not shown) is locked.

After the closing operation of the door is completed as described above, the opening operation of the door is performed in the reverse order of the operation. In this case, as the piston 422 is raised, the suction force in the hydraulic chamber 426c is generated to As the first compression spring 440 is contracted by the small diameter, the control rod 434 is raised together, so that oil pressure in the hydraulic chamber 426d under the cylinder 426 is formed in the control ring 436. And the guide passage 430a formed in the control sheet 430 and the third control groove 434d and the first control groove 434b of the control rod 434 flow into the hydraulic chamber 426c.

As described above, as the piston 422 rises, the switching head 416 connected to the guide pin 420 rises together to compress the compression spring 414. When the opening angle of the door exceeds 90 °, the guide pin ( 420 is located on the stopper upper surface 426a of the cylinder 426, so that the door is in a stopped state as shown in FIG. 9A.

In the opening operation of the door as described above, the speeds of the first, second and third speeds which were acted upon the closing of the door by the control rod 434 are released.

If, during the opening of the door, the opening operation of the door stops, the door is reduced to the operation of the first speed, the second speed, or the third speed described above, and the door is automatically closed by the automatic hinge function.

In addition, the safety device is activated when the door is suddenly closed.

That is, when the door is suddenly closed as shown in FIG. 9E, the first and second compression springs 440 and 442 are compressed by the sudden high pressure action of the hydraulic oil in the hydraulic chamber 426c to control the rod 434. While moving downward, the control ring 436 is spaced apart from the control seat 430 so that the hydraulic oil in the hydraulic chamber 426c is quickly discharged to the hydraulic chamber 426d under the cylinder 426, and thus, each component by the hydraulic oil is discharged. It is possible to prevent failures such as breakage. After the door is returned to the normal operation, the control rod 434 is returned to the normal position by the restoring force of the first and second compression springs 440 and 442 so that the control ring 436 is in close contact with the control seat 430. Will be done.

And to adjust the opening and closing speed of the door, the hydraulic adjustment pin 432 is loosened or tightened. That is, when the hydraulic control pin 432 is tightened, the flow rate decreases, and the overall speed of the first, second, and third speeds becomes slow. When the hydraulic control pin 432 is loosened, the flow rate increases, and the first, second, and third flow rates increase. The overall speed of the stomach will be faster.

FIG. 10 is an exploded perspective view of the automatic hinge of the fifth embodiment of the present invention, and FIGS. 11A, 11B, 11C, and 11D are sectional views of the operating state as shown in FIG. 10.

Reference numeral 500 denotes the overall configuration of the automatic hinge.

Reference numeral 502 denotes a fixed side hinge plate provided on the door frame side, and reference numeral 504 illustrates a movable side hinge plate installed on the door side and moving together when opening and closing the door.

A plurality of screw holes 506 are drilled in the fixed side hinge plate 502 and the movable side hinge plate 504 to be fixed to the door frame and the door by screws or the like.

In order to bind the fixed side hinge plate 502 and the movable side hinge plate 504 to each other, a plurality of hinge knuckles 508 and 510 are formed at each end thereof.

On the other hand, the hinge plate 502, 504 is provided with a security means for making a sound when opening and closing the door, which is the same as the configuration and effect of the security means described in the first embodiment, a description thereof will be omitted.

Reference numeral 512 is an upper cap screwed to the fixed side hinge knuckle 508 to support the compression spring 514 to be described later, reference 512a is a fastening groove that can use a tool when screwing the upper cap 512 Reference numeral 514 denotes a compression spring for providing a rotational force of the door, and 516 denotes a switching head.

The switching head 516 is formed in a cylindrical shape having an external step approximately, and a support step 516a for supporting the compression spring 514 is formed therein, and guide holes 516b penetrating to face each other in the vertical direction. ), Two guide pins 518 are installed through the guide holes 516b, and the guide pins 518 are fixed to the holes 510a formed opposite to the movable side hinge knuckle 510.

Accordingly, the switching head 516 is rotated together with the movable side hinge knuckle 510 when the door is opened, and moves up and down according to the repulsive force of the compression spring 514, wherein the guide hole 516b is guide pin 518. ) Will be guided to move the distance is limited.

A hole 516c is formed in the lower portion of the switching head 516 so that the piston 522 serving as the piston rod is connected and fixed through the guide pin 520 installed through the hole 516c. The lower portion of the piston head 524 is installed, the hydraulic reservoir 522a is formed inside the piston 522 is sealed by a plug 526 installed on the upper portion.

Reference numeral 528 denotes a cylinder.

The cylinder 528 is installed in the hinge knuckles 508 and 510 and is fixed to the fixed side hinge knuckle 508 by fixing means such as pins or welding, and a lower portion thereof is screwed by a lower cap 530 and a seal.

A stopper upper surface 528a for stopping the door is formed on the upper portion of the cylinder 528 by a guide pin 520 connecting the switching head 516 and the piston 522, and is formed from the upper surface 528a of the stopper. The opposite inclined induction groove 528b to which the guide pin 520 is guided is formed.

A control rod 532 is inserted into the inner diameter 524a of the piston head 524 to implement first, second, and third speeds when the door is closed, and serves as a safety valve.

And the hollow portion 532a of the control rod 532 is configured by screwing the hydraulic adjustment pin 534 to adjust the speed of the door by adjusting the amount of pressure oil movement.

The control rod 532 is formed through the hollow portion 532a through which the hydraulic control pin 534 is screw-assembled, a plurality of flow path holes (532b, 532c) is perforated above and below the outside, The first control groove 532d, the second control clogging portion 532e, and the third control groove 532f are formed in the circumference to block and allow the movement of the hydraulic oil vertically to implement the first, second, and third speeds of the door. The upper part of the control rod 532 is provided with a snap ring 536 so that the control rod 532 can be moved together with the piston head 524, and a lower portion of the control rod 532 is formed by a suddenly generated high pressure oil. The control ring 538 and the snap ring 540 for moving the 532 and the compression spring 542 is provided between them.

The control ring 538 is installed to be slidably tight with the outer diameter of the control rod 532.

On the other hand, the lower cap 530 is formed by fastening grooves (530a) that can be used when the screw is fastened to this.

The guide pins 518 and 520 are preferably provided with a bushing to reduce contact friction.

In the drawings, reference numerals 544 and 546 show O-rings for sealing.

Referring to the effect by the automatic hinge 500 of the fifth embodiment of the present invention configured as described above are as follows.

11A shows the stationary state of the automatic hinge 500 with the door open.

That is, the fixed side hinge plate 502 is kept fixed at the door frame side, and the movable side hinge plate 504 fixed at the door side is positioned between about 90 ° and 180 ° with the door open.

In such a state, the compression spring 514 is maintained in a compressed state, and the switching head 516, the piston 522, and the piston head 524 are in a raised state, and the guide of the switching head 516 is raised. The guide pin 518 positioned in the long hole 516b is positioned below the guide hole 516b, and the guide pin 520 connecting the switching head 516 and the piston 522 is a stopper of the cylinder 528. The state is located on the upper surface 528a.

As a result, the guide pin 520 is placed on the stopper upper surface 528a of the cylinder 528 at a position between the movable side hinge plate 504 and about 90 ° to 180 ° with respect to the fixed side hinge plate 502. The door is to be stopped, the hydraulic pressure is not generated at this time.

11B illustrates a state in which the automatic hinge 500 is closed at the first speed in a state where the door is opened.

That is, the stationary side hinge plate 502 is in the state fixed to the door frame side, and the movable side hinge plate 504 fixed to the door side is closed from about 90 degrees to 30 degrees while the door is closed.

The movable hinge plate 504 is rotated, and the switching head 516 connected to the hinge knuckle 510 of the movable hinge plate 504 by the guide pin 518 is rotated so that the rotation angle of the door is within 90 °. As the compression spring 514 is expanded by the repulsive force, the guide pin 520 placed on the top surface 528a of the cylinder 528 rotates together with the switching head 516 to escape the top surface 528a. Entering the inclined induction groove 528b is moved downward.

Accordingly, while the piston 522 and the piston head 524 are lowered together, the control rod 532 located at the inner diameter 524a of the piston head 524 is also lowered together so that the hydraulic oil in the hydraulic chamber 528c is controlled. The first control groove 532d formed in the 532 flows to the hydraulic storage chamber 522a, and the lower end of the control rod 532 moving downward with the lowering of the piston 522 and the piston head 524 is lower In contact with the top surface 530b of the cap 530, the downward movement of the control rod 532 is stopped, the compression spring 542 is compressed, and the piston head 524 slides relative to the control rod 532 to continue downward movement. Done.

As described above, the hydraulic pressure in the hydraulic chamber 528c is maintained in the hydraulic chamber 528c until the time when the piston 522 and the piston head 524 pass and the first control groove 532d of the control rod 532 moves downward and stops together. At the same time, the hydraulic pressure in the hydraulic chamber 528c flows to the hydraulic storage chamber 522a through the flow path holes 532b and 532c formed in the hollow portion 532a of the control rod 532. do.

The pressure in the hydraulic chamber 528c through the flow path holes 532b and 532c of the hollow portion 532a provided with the first control groove 532d and the hydraulic control pin 534 formed in the control rod 532 as described above. The oil price is simultaneously exited to the hydraulic storage chamber 522a so that the door closes quickly in a section between about 90 ° to 30 °. At this time, the amount of hydraulic pressure flowing toward the hollow portion 532a in which the hydraulic control pin 534 is installed flows in a smaller amount than that flowing into the first control groove 532d.

FIG. 11C illustrates a state in which the automatic hinge 500 is closed at the second speed while the door is opened.

That is, the stationary side hinge plate 502 is maintained in the state fixed by the door frame side, and the movable side hinge plate 504 fixed to the door side as the door is closed is closed from about 30 degrees to 10 degrees.

Continued repulsive force of the compression spring 514 causes the guide pin 520 to rotate with the switching head 516 so that the guide pin 520 continues on the inclined guide groove 528b of the cylinder 528 in the downward direction. The piston 522 that is moved together and connected to the guide pin 520 continues to descend, and the second speed section is made relatively short.

At this time, the piston 522 and the piston head 524 continue to be lowered so that the control rod 532 is in a stationary state, the compression spring 542 is continuously compressed in accordance with the falling of the control ring 538, the control ring 538 ) Passes through the second control block 532e of the control rod 532 to temporarily block the flow of hydraulic pressure. At this time, the hydraulic oil in the hydraulic chamber 528c flows to the hydraulic storage chamber 522a through the flow path holes 532b and 532c formed in the hollow portion 532a of the control rod 532, so that the rotation speed of the door is reduced. .

As described above, the hydraulic pressure in the hydraulic chamber 528c is controlled by the second control block 532e of the control rod 532 in contact with the control ring 538 to block passage of the hydraulic oil. Only the hollow portion 532a of the installed control rod 532 allows the passage of pressure oil so that the door is closed at a slow speed (second speed) in a section between about 30 ° and 10 °.

FIG. 11D illustrates a state in which the automatic hinge 500 is closed at the third speed while the door is opened.

That is, the fixed side hinge plate 502 is fixed in the door frame side, and the movable side hinge plate 504 fixed to the door side as the door is closed reaches the 0 degree starting point from about 10 degrees. .

Continued repulsive force of the compression spring 514 causes the guide pin 520 to rotate with the switching head 516 so that the guide pin 520 continues on the inclined guide groove 528b of the cylinder 528 in the downward direction. Will move.

Accordingly, while the piston 522 and the piston head 524 continue to descend, the control ring 538 that descends along with the piston passes through the third control groove 532f of the stopped control rod 532 to the hydraulic chamber 528c. The hydraulic pressure flows to the hydraulic storage chamber 522a, and at the same time, the hydraulic pressure in the hydraulic chamber 528c passes through the hydraulic holes 532b and 532c formed in the hollow portion 532a of the control rod 532. 522a.

Pressure in the hydraulic chamber 528c through the flow path holes 532b and 532c of the hollow portion 532a provided with the third control groove 532f and the hydraulic control pin 534 formed in the control rod 532 as described above. The oil price is simultaneously exited to the hydraulic storage chamber 522a so that the door is closed at a high speed (third speed) in a section of about 10 ° to 0 °. As a result of this high speed, the latch bolt installed in the door lock (not shown) is locked.

As described above, after the door closing operation is completed, the opening operation of the door is performed by the reverse order of the operation. In this case, the piston 522 and the piston head 524 are raised together in the hydraulic storage chamber 522a. As the suction force is generated and the compression spring 542 is compressed by the suction force, the control ring 538 is spaced apart from the bottom of the piston head 524 to form a flow path. 528c).

As described above, as the piston 522 rises, the switching head 516 connected to the guide pin 520 rises together to compress the compression spring 514. When the opening angle of the door exceeds 90 °, the guide pin ( The 520 is positioned on the stopper upper surface 528a beyond the bevel induction groove 528b of the cylinder 528, so that the door is in a stopped state as shown in FIG. 11A.

In the opening operation of the door as described above, the speeds of the first, second, and third speeds that were acting upon the closing of the door are released.

If, during the opening of the door, the opening operation of the door stops, the door is reduced to the operation of the first speed, the second speed, or the third speed described above, and the door is automatically closed by the automatic hinge function.

In addition, the safety device is activated when the door is suddenly closed.

That is, when the door is suddenly closed so that the hydraulic oil in the hydraulic chamber 528c acts as a high pressure, the control rod 532 operates upward to compress the compression spring 542 to press the hydraulic oil in the hydraulic chamber 528c. By quickly discharging to the hydraulic storage chamber 522a, it is possible to prevent breakdown of each component due to the pressurized oil. After the door is returned to the normal operation, the control rod 532 is returned to the normal position by the restoring force of the compression spring 542.

And to adjust the opening and closing speed of the door, loosen or tighten the hydraulic adjustment pin 534. That is, when the hydraulic control pin 534 is tightened, the plurality of flow path holes 532b formed in the hollow portion 532a of the control rod 532 are blocked one by one, thereby reducing the flow of the flow rate, thereby reducing the overall speed of the first, second, and third speeds. When the hydraulic control pin 534 is loosened, the flow rate of the flow path hole 532b increases, so that the overall speed of the first, second, and third speeds is increased.

Figure 12 is an exploded perspective view of the automatic hinge of the sixth embodiment of the present invention, Figure 13a, 13b, 13c, 13d is an illustration of an operating state as an assembled cross-sectional view of FIG.

Reference numeral 600 denotes the overall configuration of the automatic hinge.

Reference numeral 602 denotes a fixed side hinge plate installed on the door frame side, and reference numeral 604 denotes a movable side hinge plate installed on the door side and moving together when opening and closing the door.

A plurality of screw holes 606 are drilled in the fixed side hinge plate 602 and the movable side hinge plate 604 to be fixed to the door frame and the door, respectively, with screws.

In order to bind the fixed side hinge plate 602 and the movable side hinge plate 604 to each other, a plurality of hinge knuckles 608 and 610 are formed at each end thereof.

On the other hand, the hinge plate 602, 604 is provided with a security means for sounding the security when opening and closing the door, which is the same as the construction and the effect of the security means described in the first embodiment, a description thereof will be omitted.

Reference numeral 612 is screwed to the fixed side hinge knuckle 608 as the upper cap to support the compression spring 614 to be described later, reference numeral 612a is a fastening groove that can use a tool when screwing the upper cap 612 Denoted at 614 is a compression spring for providing a rotational force of the door, and 616 is a switching head.

The switching head 616 is formed in a cylindrical shape having a stepped outside and a support step 616a supporting the compression spring 614 therein, and guide holes 616b penetrating to face each other in the vertical direction. The guide pin 618 is installed through the guide hole 616b, and the guide pin 618 is fixed to the hole 610a formed opposite to the movable side hinge knuckle 610.

Accordingly, the switching head 616 is rotated together with the movable side hinge knuckle 610 when the door is opened, and moves up and down according to the repulsive force of the compression spring 614, wherein the guide hole 616b is guide pin 618 ) Will be guided to move the distance is limited.

A hole 616c is formed in the lower portion of the switching head 616 so that the guide pin 620 is installed through the hole 616c, and the piston serves as a piston rod through a screw hole formed in the lower portion of the switching head 616. 622 is connected and fixed.

In addition, the fixed side hinge knuckle 608 is fixed to the switching head guide 623 by a fixing means such as a pin or welding, the upper portion of the stopper is guided to the guide pin 620 to face each other to stop the door 623a is formed, and the inclined surface guide groove 623b formed from the stopper upper surface 623a and guided to the guide pin 620 is formed.

Reference numeral 628 shows a lower cap that also serves as a cylinder.

The lower cap 628 is screwed to the fixed side hinge knuckle 608, and the hydraulic chamber 628a, the inner diameter 628b of the inside is blocked and allowed to move the hydraulic oil to the first, second, third speed of the door A first control groove 628c, a second control block 628d and a third control groove 628e are formed, and the upper portion of the hydraulic chamber 628a of the lower cap 628 is a sealing cap for sealing ( 629 are screwed together.

The piston 622 is formed inside the hollow portion 622a and the upper portion thereof is closed and sealed by the sealing cap 629.

The piston 622 is formed with a plurality of flow paths 622b penetrating through the hollow portion 622a, and a piston head 624 is provided below the hollow portion 622a, and the piston head 624 is pressurized. The hydraulic adjustment pin 626 to adjust the speed of the door by adjusting the amount of movement of the screw is assembled.

In addition, the shaft portion 624a of the piston head 624 has a hydraulic pressure in relation to the first control groove 628c, the second control block portion 628d, and the third control groove 628e formed in the lower cap 628. A control ring 630 is provided to block and allow flow, and the control ring 630 is supported by a snap ring 632 fixed to the shaft portion 624a.

The control ring 630 has an outer diameter 630a in tight contact with the inner diameter 628b of the lower cap 628, and the inner diameter 630b is smaller than the outer diameter of the shaft portion 624a of the piston head 624. The outer diameter 624b of the piston head 624 is formed to be smaller than the inner diameter 628b of the lower cap 628 to allow the flow of hydraulic pressure, and a protrusion 624c is formed at the bottom thereof to the hydraulic oil. Accordingly, the upper and lower surfaces of the control ring 630 moving up and down are contacted and spaced from the protrusion 624c so that the flow of the pressurized oil is blocked and allowed.

The hydraulic control pin 626 is for adjusting the flow path groove 626a for guiding the oil pressure and the screw portion 626b screwed to the piston head 624 and the flow path groove 626c formed in the screw portion 626b Driver groove 626d.

The lower cap 628 is provided with a fastening groove 628f for using a tool when screwing it, and an adjusting means for adjusting the hydraulic control pin 626 is installed.

The adjusting means is inserted into the driver groove (626d) of the hydraulic control pin 626 and the adjusting pin 634,

A return spring 638 which is installed between a plurality of snap rings 636 fixed to the adjustment pin 634 to return the adjustment pin 634;

O-ring 640 for sealing the adjusting pin 634,

Driver grooves 634a formed in the head of the adjustment pin 634,

The cap 642 is screwed to the lower cap 628 to support the adjusting pin 634.

In the above-described guide pins 618 and 620, it is preferable to install a bushing together to reduce contact friction.

Referring to the effect by the automatic hinge 600 of the sixth embodiment of the present invention configured as described above are as follows.

13A shows the stationary state of the automatic hinge 600 as the door is open.

That is, the fixed side hinge plate 602 is kept fixed at the door frame side, and the movable side hinge plate 604 fixed at the door side is positioned between about 90 ° and 180 ° with the door open.

In the above state, the compression spring 614 maintains the compressed state, and the switching head 616 and the piston 622 and the piston head 624 and the hydraulic control pin 626 connected thereto are raised. At this time, the guide pin 618 located in the guide hole 616b of the switching head 616 is positioned below the guide hole 616b, and the guide pin 620 is the upper surface of the stopper 623a of the switching head guide 623. ) Will be in the state.

Accordingly, the guide pin 620 is placed on the stopper upper surface 623a of the switching head guide 623 when the movable side hinge plate 604 is positioned between about 90 ° and 180 ° with respect to the fixed side hinge plate 602. As a result, the door is kept in a stopped state, and hydraulic pressure is not generated at this time.

FIG. 13B illustrates a state in which the automatic hinge 600 is closed at the first speed while the door is opened.

In other words, the fixed hinge plate 602 is kept fixed at the door frame side, and the movable hinge plate 604 fixed at the door side is closed from about 90 ° to 30 ° while the door is closed.

The movable hinge plate 604 is rotated and the switching head 616 connected to the hinge knuckle 610 of the movable hinge plate 604 by the guide pin 618 is rotated so that the rotation angle of the door is within 90 °. While the compression spring 614 is expanded by the repulsive force, the guide pin 620 placed on the upper surface of the stopper 623a of the switching head guide 623 enters the inclined guide groove 623b beyond the upper surface of the stopper 623a. To move downward.

At this time, the piston 622 is lowered together with the control ring 630 formed on the piston head 624 is lowered with the upper surface is in close contact with the protrusion 624c of the piston head 624 by the pressure of the hydraulic oil. As the control ring 630 passes through the first control groove 628c formed in the inner diameter 628b of the hydraulic chamber 628a of the lower cap 628, the hydraulic oil in the lower hydraulic chamber 628a may be the first. Through the control groove 628c is introduced into the upper hydraulic storage chamber (628g).

As described above, the hydraulic pressure in the hydraulic chamber 628a flows to the hydraulic storage chamber 628g until the piston 622 descends and the control ring 630 passes the first control groove 628c. The hydraulic pressure in 628a flows to the hydraulic storage chamber 628g finely through the hydraulic control pin 626.

That is, a part of the pressure oil in the hydraulic chamber 628a is introduced into the hydraulic storage chamber 628g through the flow path grooves 626c and 626a formed in the hydraulic control pin 626.

As described above, the pressure oil in the hydraulic chamber 628a flows simultaneously into the hydraulic storage chamber 628g through the first control groove 628c and the hydraulic control pin 626 formed in the lower cap 628, so that the door is about 90 °. It closes quickly in the interval between 30 °. At this time, the amount of hydraulic pressure flowing to the hydraulic control pin 626 is less than the flow to the first control groove (628c) flows.

FIG. 13C illustrates a state in which the automatic hinge 600 is closed at the second speed while the door is opened.

In other words, the fixed hinge plate 602 is fixed at the door frame side, and the movable hinge plate 604 fixed at the door side is closed from about 30 ° to 10 ° while the door is closed.

The guide pin 620 is continuously moved downward by the inclined guide groove 623b of the switching head guide 623 by the continuous repulsive force of the compression spring 614, the second speed section is relatively very short In this case, the control ring 630 passes through the second control clogging portion 628d of the lower cap 628 to temporarily block the flow of hydraulic pressure, and in this case, the hydraulic chamber through the hydraulic control pin 626. The hydraulic oil in 628a flows into the hydraulic storage chamber 628g so that the rotation speed of the door is reduced.

As the pressure oil in the hydraulic chamber 628a continuously pressurizes the control ring 630 as described above, the upper surface of the control ring 630 adheres to the protrusion 624c formed on the lower surface of the piston head 624. The pressure is maintained only in the hydraulic control pin 626 as the outer diameter 630a of the control ring 630 is in contact with the second control block 628d of the lower cap 628 to block passage of the hydraulic oil. Allowing for passage of water allows the door to close at a slow speed (second speed) in a section between about 30 ° and 10 °.

FIG. 13D illustrates a state in which the automatic hinge 600 is closed at the third speed while the door is opened.

That is, the fixed hinge plate 602 is fixed at the door frame side, and the movable hinge plate 604 fixed at the door side reaches the 0 ° starting point from about 10 ° while the door is closed. .

The guide pin 620 continues to move downward through the inclined guide groove 623b of the switching head guide 623 by the continuous repulsive force of the compression spring 614.

At this time, the control ring 630 formed in the piston head 624 is lowered with the piston 622 is lowered so that the upper surface is in close contact with the projection (624c) of the piston head 624 by the pressure of the hydraulic oil. As the control ring 630 passes the section of the third control groove 628e formed in the inner diameter 628b of the hydraulic chamber 628a of the lower cap 628, the hydraulic oil in the hydraulic chamber 628a is controlled by the third control. The oil is introduced into the hydraulic storage chamber 628g through the groove 628e.

As the piston 622 is lowered as described above, the control ring 630 passes through the third control groove 628e formed in the lower cap 628 so that the hydraulic pressure in the hydraulic chamber 628a flows into the hydraulic storage chamber 628g. At this time, the hydraulic pressure in the hydraulic chamber 628a flows into the hydraulic storage chamber 628g at the same time through the hydraulic control pin 626.

As described above, the pressure oil in the hydraulic chamber 628a flows simultaneously into the hydraulic storage chamber 628g through the third control groove 628e and the hydraulic control pin 626 formed in the lower cap 628, so that the door is about 10 °. It closes at high speed (3rd speed) in the section of 0 ° starting point. As a result of this high speed, the latch bolt installed in the door lock (not shown) is locked.

As described above, after the door closing operation is completed, the opening operation of the door is performed by the reverse order of the operation. In this case, the piston 622 is raised to control the action of the hydraulic oil in the hydraulic storage chamber 628g. 630 is spaced apart from the protrusion 624c formed in the piston head 624.

Therefore, the flow of hydraulic pressure is rapidly introduced into the hydraulic chamber 628a through the inner diameter 630b, the third control groove 628e, and the first control groove 628c of the control ring 630, and some of the hydraulic pressure is adjusted by the hydraulic control pin ( The compression spring 614 is compressed by the switching head 616 which is introduced into the hydraulic chamber 628a through the 626 and the piston 622 is raised together, and the opening angle of the door exceeds 90 °. When the guide pin 620 is located on the stopper upper surface 623a of the switching head guide 623, the door is in a state as shown in Figure 13a to maintain a stop state.

In the opening operation of the door as described above, the speeds of the first, second, and third speeds that were acting upon the closing of the door are released.

If, during the opening of the door, the opening operation of the door is stopped, it is reduced to the operation of the first speed, the second speed, or the third speed described above at that position, thereby automatically performing the automatic hinge function.

And to adjust the opening and closing speed of the door, loosen or tighten the hydraulic adjustment pin 626. That is, when the hydraulic control pin 626 is tightened, the flow rate decreases, and the overall speed of the first, second, and third speeds becomes low. When the hydraulic control pin 626 is loosened, the flow rate increases, and the first, second, and third speeds increase. The overall speed of the stomach will be faster.

The adjustment of the hydraulic adjustment pin 626 in the above, remove the cap 642 installed in the lower cap 628 and then insert the driver tool into the driver groove 634a of the adjustment pin 634 and press the adjustment pin ( The end of 634 is engaged with the driver groove 626d of the hydraulic adjustment pin 626. After turning the driver tool to adjust the hydraulic flow of the hydraulic adjustment pin 626, after the driver tool is removed from the driver groove 634a of the adjustment pin 634 by adjusting the restoring force of the return spring 638 ( 634 is returned and the adjusting pin 634 is spaced apart from the hydraulic adjusting pin 626, and then the cap 642 is screwed to complete the adjustment of the hydraulic adjusting pin 626.

The automatic hinge described in the first to sixth embodiments described above is installed based on the right door, and may be installed in the same embodiment as described above even when installed on the left door.

And one or more automatic hinges can be installed and used in the door, a plurality of automatic hinges can be used when the height and width of the door and the door is heavy, such as a mansion.

Meanwhile, in the other embodiments except the second embodiment, the switching head and the switching head guide for converting the vertical motion into the rotational motion or the rotational motion into the vertical motion by the compression spring may be formed in one body and are divided into two bodies. It can be adopted in various forms (deformation such as inclined plane).

In the automatic hinge described in the first to sixth embodiments of the present invention, the stop function (stop function) when the door is opened and the first, second, and third speeds when the door is closed are closed. It was described.

The setting angle of the stop function is 90 ° to 180 ° with the door open, the first speed is 90 ° to 30 °, the second speed is 30 ° to 10 ° and the third speed is 10 ° to 0 ° with the door closed. It is described as a limited, but this is only an embodiment, and the setting angle of the stop function and the setting angle of the first, second, and third speeds can be variously implemented according to the installation condition and the installation environment of the door.

As described above, an embodiment of the automatic hinge of the present invention illustrated in FIGS. 1 to 13D has been described.

Further advantages and modifications to the present invention will be readily apparent to those skilled in the art. Thus, in a broad aspect, the invention is not limited to the specific details and representative structures shown and described herein.

Thus, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

The present invention is not limited to the above-described embodiments, and various modifications and variations are made by those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention. Of course this is possible.

As described above, the automatic hinge of the present invention exhibits the unique function of the hinge and the function of the door closer or the door check (stop and first, second, and third speed functions) inside the hinge, so that the convenience and quietness of operation can be achieved. It is guaranteed and can be manufactured very cheaply compared to conventional door closers or door checks, and the component parts are also simple to reduce the product cost significantly due to the improvement of assembly and production, and the security function is installed on the hinge itself. Has the effect of protecting lives and property.

Claims (20)

The hinge plate 102 and 104 face each other in order to bind the fixed side hinge plate 102 provided on the door frame side and the movable side hinge plate 104 provided on the door side and these hinge plates 102 and 104 to each other. A plurality of hinge knuckles 108 and 110 formed in a cylindrical shape at an end thereof; An upper cap 112 fixed to an upper portion of the hinge knuckle 108; Compression springs 114 installed in the hinge knuckles 108 and 110 to provide the rotational force of the door, The compression spring 114 is installed in the hinge knuckles 108 and 110 and receives the repulsive force of the compression spring 114 and is installed through the guide pin 118 and the guide hole 116b fixed to the hinge knuckle 110. Switching head 116 for converting the vertical motion by the rotary motion to), A piston rod 122 connected to the lower portion of the switching head 116 via a guide pin 120 and having a piston head 126 which is rotated together according to the up and down movement of the switching head 116, It is installed inside the hinge knuckles 108 and 110 and is fixed to the fixed side hinge knuckles 108 and sealed by a lower cap 140 to guide the piston head 126, and guide pins 120 thereon. A cylinder 134 formed from a stopper upper surface 134a for stopping the door by the stopper upper surface 134a and having an opposite inclined surface guide groove 134b for guiding the guide pin 120; Sealing assembly in the hollow portion (122a) of the piston rod 122, the hydraulic control pin 124 to control the hydraulic oil in the cylinder 134 with the piston rod 122, Automatic hinge, characterized in that configured to include a control valve (144) installed in the piston head (126) is installed in the return valve 128 and the safety valve 130 and the lower cap 140 to return the pressure oil. According to claim 1, wherein the hydraulic pressure adjusting pin 124 is screwed to the secondary speed adjusting groove 124c having a primary speed adjusting groove 124a and the flow path groove 124b and the piston rod 122 ( 124d) and a plurality of O-ring grooves (124e) and driver grooves (124f). The method of claim 1, wherein the piston rod 122 has a reduction passage 122b, a speed regulating groove 122c, and first and second speed regulating passages 122d and 122e passing through the hollow portion 122a. Featured auto hinge. According to claim 1, Security pin 156 protrudingly fixed through the fixing hole (102a) perforated in the fixed side hinge plate 102 and having a bending spring 160 having a locking jaw (160a), Guide pipe 162 provided through the rear surface of the hole 104a drilled in the movable side fixing plate 104, A torsion spring 164 installed on the guide pipe 162 by a pin 166 and having a locking end 164a that is elastically engaged and disengaged from the locking jaw 160a; The hinge is installed at the end of the torsion spring 164, the striking weight 168 hitting the inner wall (152a) of the door 152, characterized in that the automatic hinge. The hinge side plates 202 and 204 face each other in order to bind the fixed side hinge plate 202 provided on the door frame side and the movable side hinge plate 204 provided on the door side and these hinge plates 202 and 204 to each other. A plurality of hinge knuckles 208 and 210 formed in a cylindrical shape at an end thereof, An upper cap 212 and a lower cap 216 fixed to upper and lower portions of the hinge knuckles 208 and 210, A torsion spring 224 installed in the hinge knuckles 208 and 210 to provide a rotational force of the door, It is fixed by the movable side hinge knuckle 210 and the pin 228 and is subjected to the torsional force of the torsion spring 224, on the bottom surface of the stationary slope 220c and the first, second, third friction surface 220d ( 220e) friction plate head 220 is formed (220f), The friction protrusion 222a installed in the hinge knuckles 208 and 210 and in contact with the stationary comb surface 220c and the first, second and third friction surfaces 220d, 220e and 220f of the friction plate head 220. The friction slit 222b is guided to the guide pin 230 fixed to the hinge knuckle 208 and the friction pin head 222 is installed to be movable up and down, It is installed in the friction pin head 222 is characterized by consisting of a compression spring 226 for maintaining a constant friction force of the friction pin head 222 and the friction plate head 220 during the up and down movement of the friction pin head 222 Automatic hinge made. The friction plate head 220 and the friction pin head of claim 5 are installed through the friction plate head 220, the friction pin head 222, and the lower cap 216 to adjust the compression force of the compression spring 226. Automatic hinge, characterized in that it comprises a pressure adjustment bolt 234 for adjusting the friction force of the 222 and the spring seat 232 for fixing it. The hinge plate 302 and 304 face each other in order to bind the fixed side hinge plate 302 provided on the door frame side and the movable side hinge plate 304 provided on the door side and these hinge plates 302 and 304 together. A plurality of hinge knuckles (308) (310) formed in a cylindrical shape at an end thereof; An upper cap 312 fixed to an upper portion of the hinge knuckle 308, Compression springs 314 installed in the hinge knuckles 308 and 310 to provide the rotational force of the door, The compression spring 314 is installed in the hinge knuckles 308 and 310 to receive the repulsive force of the compression spring 314 and is installed through the guide pin 318 and the guide hole 316b fixed to the hinge knuckle 310. Conversion head 316 for converting the vertical motion by the rotary motion, A piston that is connected to the lower portion of the switching head 316 via a guide pin 320 and rotates according to the up and down movement of the switching head 316 to realize first, second and third speeds when the door is closed. (322), A stopper upper surface 326a is installed inside the hinge knuckles 308 and 310 and fixed to the fixed side hinge knuckle 308 and stops the door by a guide pin 320 thereon, and the stopper upper surface ( A switching guide head 326 formed from 326a and having an opposite inclined induction groove 326b through which the guide pin 320 is guided; The lower cap 328, which seals and fixes the switching guide head 326, is formed with a hydraulic chamber 328a, and a piston 322 is inserted into the cylinder to serve as a cylinder. A ring cap 334 and a ring cap 334 that are assembled to the threaded portion 328e of the lower cap 328 and have protrusions 334b formed on the bottom surface of the lower cap 328 to allow the movement of the hydraulic oil to the inner diameter 334a. A control valve 336 that is restrained in the threaded portion 328e of the 328 to connect and disconnect the flow of the flow path between the hydraulic chamber 328a and the hydraulic reservoir 326c, The screw is assembled to the lower cap 334 to adjust the speed of the door at the same time as the flow path to the hydraulic chamber 328a and the hydraulic storage chamber 326c fine, the hydraulic control pin 332, An automatic hinge, comprising: a safety valve (324) installed in the piston (322) for directly communicating hydraulic pressure from the hydraulic chamber (328a) to the hydraulic storage chamber (326c). According to claim 7, wherein the hydraulic control pin 332 is a screw portion (332b) that is screwed to the flow path groove 332a and the lower cap 328 for guiding the hydraulic oil and the flow path groove (332c) formed in the screw portion (332b) ) And the automatic hinge, characterized in that consisting of the O-ring groove (332d) for sealing and the driver groove (332e) for adjustment. The method of claim 7, wherein the piston 322 is formed in the hollow portion 322a is sealed by a plug 324 installed on the upper portion, the piston 322 is a plurality of penetrating through the hollow portion 322a A flow path 322b is formed, and the first control groove 322c and the second control blockage implement the first, second and third speeds of the door by blocking and allowing the movement of the hydraulic oil vertically around the piston 322. A portion 322d and a third control groove 322e are formed, and a safety valve 324 is installed in the bottom portion of the piston 322 to communicate with the hollow portion 322a to allow hydraulic pressure to pass through in an emergency. Automatic hinge. According to claim 7, wherein the inner diameter (328b) of the hydraulic chamber 328a formed in the lower cap 328 is formed slightly larger than the outer diameter of the piston 322 is configured to allow the movement of the pressure oil, the lower cap ( 328) an automatic hinge, characterized in that a plurality of fastening grooves (328c) formed by using a tool when screwing it is formed. 8. The control valve 336 has an inner diameter 336a in tight contact with an outer diameter of the piston 322, and a plurality of flow paths 336b are formed radially toward the center thereof. Automatic hinge, characterized in that the (336c) is formed in a smaller dimension than the screw inner diameter of the lower cap (328). The hinge side plates 402 and 404 face each other in order to bind the fixed side hinge plate 402 provided on the door frame side and the movable side hinge plate 404 provided on the door side and these hinge plates 402 and 404 to each other. A plurality of hinge knuckles 408 and 410 formed in a cylindrical shape at an end thereof; An upper cap 412 fixed to an upper portion of the hinge knuckle 408, Compression springs 414 are installed in the hinge knuckles 408 and 410 to provide the rotational force of the door, The compression spring 414 is installed in the hinge knuckles 408 and 410 and is installed through the guide pin 418 and the guide hole 416b fixed to the hinge knuckle 410 to receive the repulsive force of the compression spring 414. Conversion head 416 for converting the vertical motion by the rotational motion, Piston 422, which serves as a piston rod that is connected to the lower portion of the switching head 416 via a guide pin 420 to rotate together with the up and down movement of the switching head 316, A stopper installed in the hinge knuckles 408 and 410 and fixed to the fixed side hinge knuckle 408, the upper part of which is stopped by a guide pin 420 connecting the switching head 416 and the piston 422. An upper surface 426a and a cylinder 426 formed from the upper surface 426a of the stopper and having an opposite inclined surface guide groove 426b guided to the guide pin 420; A lower cap 428 that seals the lower portion of the cylinder 426 and constitutes the hydraulic chamber 426d together; Hydraulic control pin 432 is installed via the control sheet 430 fixed in the cylinder 426 to adjust the amount of pressure oil movement and the speed of the door, The control rod 430a is installed in the center of the control sheet 430 through the hole in which the guide flow path 430a is formed and the inner diameter 422b formed in the lower part of the piston 422 to implement the first, second, and third speeds when the door is closed. (434), The control ring 434 is moved through the high pressure oil when the door is suddenly opened around the small diameter part and is installed through the snap ring 438 to be returned by the first and second compression springs 440 and 442 in normal operation ( 436) comprising an automatic hinge. The screw 432b of claim 12, wherein the hydraulic pressure adjusting pin 432 is screwed to the flow path groove 432a and the cylinder 426 to guide the hydraulic oil through the flow path hole 430b formed in the control sheet 430. And an o-ring groove (432c) for sealing and a driver groove (432d) for adjusting the amount of hydraulic pressure. The control rod 434 has a first through-hole hollow portion 434a, and the first and second speeds of the door are realized by blocking and allowing the movement of the hydraulic oil vertically around the outer circumference. Auto hinge, characterized in that the control groove (434b), the second control block portion (434c) and the third control groove (434d) is formed. The hinge plate 502 and 504 face each other in order to bind the fixed side hinge plate 502 provided on the door frame side and the movable side hinge plate 504 provided on the door side and these hinge plates 502 and 504 to each other. A plurality of hinge knuckles 508 and 510 formed in a cylindrical shape at an end thereof; An upper cap 512 fixed to an upper portion of the hinge knuckle 508, Compression springs 514 installed in the hinge knuckles 508 and 510 to provide the rotational force of the door, The compression spring 514 is installed through the guide pin 518 and the guide hole 516b which are installed in the hinge knuckles 508 and 510 to receive the repulsive force of the compression spring 514 and are fixed to the hinge knuckle 510. Switching head 516 for converting the vertical motion by the rotary motion to), A guide pin 520 is connected to the lower portion of the switching head 516 to rotate together with the up and down movements of the switching head 516, and a piston configured with the piston head 524 installed at the lower portion thereof. 522), A stopper installed in the hinge knuckles 508 and 510 and fixed to the fixed side hinge knuckle 508, the upper part of which is stopped by a guide pin 520 connecting the switching head 516 and the piston 522. A cylinder 528 having an upper surface 528a formed thereon, and having an opposite sloped induction groove 528b formed from the stopper upper surface 528a and guided to the guide pin 520, Lower cap 530 that seals the lower portion of the cylinder 528 and constitutes the hydraulic chamber 528c together, The control rod 532 is inserted to slide through the inner diameter 524a of the piston head 524 to implement the first, second, and third speeds when the door is closed, and serves as a safety valve. Auto-hinges, characterized in that it comprises a hydraulic adjustment pin 534 is screwed through the hollow portion (532a) of the control rod 532 to adjust the amount of pressure oil to control the speed of the door. The method of claim 15, wherein the control rod 532 is formed through the hollow portion 532a through which the hydraulic control pin 534 is screw-assembled, a plurality of flow path holes (532b) (532c) above and below ) Is perforated, the first control groove 532d, the second control block 532e and the third control to implement the first, second, third speed of the door by blocking and allowing the movement of the hydraulic oil vertically around the outside A groove 532f is formed, and an upper portion of the control rod 532 is provided with a snap ring 536 so that the control rod 532 can be moved together with the piston head 524, and a lower portion of the control rod 532 is suddenly generated. Automatic hinge, characterized in that the control ring 538 and the snap ring 540 for moving the control rod 532 by the high pressure oil and a compression spring 542 is installed between them. The hinge side plates 602 and 604 of the fixed side hinge plate 602 provided on the door frame side, the movable side hinge plate 604 provided on the door side, and the hinge plates 602 and 604 to bind to each other. A plurality of hinge knuckles 608 and 610 formed in a cylindrical shape at an end thereof; An upper cap 612 fixed to an upper portion of the hinge knuckle 608, Compression springs 614 installed in the hinge knuckles 608 and 610 to provide a rotational force of the door, The compression spring 614 is installed in the hinge knuckles 608 and 610 to receive the repulsive force of the compression spring 614 and is installed through the guide pin 618 and the guide hole 616b fixed to the hinge knuckle 610. Conversion head 616 for converting the vertical motion by the rotary motion, A stopper upper surface 623a is formed on the fixed side hinge knuckle 608 and faces the top of the guide pin 620 so as to stop the door by guiding the guide pin 620, and is formed from the upper surface 623a of the stopper. Switching head guide 623 formed by forming the inclined surface guide groove 623b guided to the pin 620, The first control groove which is screwed to the fixed side hinge knuckle 608, and the hydraulic chamber 628a (inner diameter 628b) of the inside to block and allow the movement of the hydraulic oil to implement the first, second, third speed of the door 628c, a second control clogging portion 628d and a third control groove 628e are formed, the lower cap 628, the upper portion of the hydraulic chamber 628a is sealed with a sealing cap 629, A piston 622 connected to the lower part of the switching head 616 to serve as a piston rod and having a hollow part 622a and a flow path 622b and a piston head 624 fixed to the lower part of the piston 622, Hydraulic adjustment pin 626 installed on the piston head 624 having an adjustment means to adjust the speed of the door by adjusting the amount of pressure oil movement, The first control groove 628c, the second control block portion 628d, and the third control groove (installed in the lower cap 628 installed on the shaft portion 624a of the piston head 624 through the snap ring 636) 628e) an automatic hinge, characterized in that it comprises a control ring (630) for blocking and allowing the flow of hydraulic pressure. 18. The control ring 630 has an outer diameter 630a in tight contact with the inner diameter 628b of the lower cap 628, and an inner diameter 630b of the shaft portion 624a of the piston head 624. It is formed with a small dimension compared to the outer diameter, the automatic hinge characterized in that the flow of the hydraulic oil is blocked and allowed by the contact and spaced apart from the projection (624c) of the piston head (624). 18. The oil pressure adjusting pin 626 of claim 17, wherein the hydraulic pressure adjusting pin 626 includes a flow path groove 626a for guiding the pressure oil, a screw part 626b screwed to the piston head 624, and a flow path groove formed in the thread part 626b. 626c) and a driver hinge (626d) for adjusting the automatic hinge. 18. The method of claim 17, wherein the adjusting means and the adjustment pin 634 is inserted into the driver groove (626d) of the hydraulic control pin 626 and engaged, A return spring 638 which is installed between a plurality of snap rings 636 fixed to the adjustment pin 634 to return the adjustment pin 634; O-ring 640 for sealing the adjusting pin 634, Driver grooves 634a formed in the head of the adjustment pin 634, Automatic hinge, characterized in that consisting of a cap (642) for screwing the lower cap (628) for supporting the adjustment pin (634).