KR100813876B1 - Built-in door hinge with spring restoring force and hydraulic buffer force - Google Patents

Abstract

The present invention relates to a built-in door hinge having a spring restoring force and a hydraulic buffering force that allows the open door to be automatically closed with spring return force and hydraulic buffering force.

The present invention is a door hinge provided in the lower hinge of the door and the door frame, is inserted into the lower inside of the door, the bracket 120 is formed to be fixed to the door on one side of the lower outer peripheral surface, and the hydraulic regulator on the upper end A hollow housing 100 into which a 700 is inserted and coupled to the bottom and a hinge holder 250 having a coupling key to be coupled to the bottom hinge hole 21 of the door frame 20; Built into the housing 100, an extension member 210 having a predetermined thickness having an O-ring groove 212 formed on an outer circumferential surface thereof is formed at an upper side thereof, and the hinge holder 250 at a lower side centering on the extension member 210. An extension portion 220 which is slide-activated in an anti-rotation state, and a protrusion 200 having a multi-threaded screw portion 240 in a predetermined section thereon; A first cylinder (600) having a pipe shape and having a lower side surrounding the expansion member (210) and being hermetically coupled to the inside of the housing (100), and having an upper side integrally coupled to the hydraulic regulator (700); A thrust bearing (400) mounted on the upper circumferential surface of the extension member (210) in the inner side of the first cylinder (600); It has a pipe shape and the lower end is mounted on the upper surface of the thrust bearing 400 in a state spaced apart from the first cylinder 600 by a predetermined interval inside the first cylinder 600 and the upper end of the hydraulic regulator 700 A second cylinder 660 integrally coupled to the second cylinder, and having a spline groove 664 formed at a middle portion of the inner circumferential surface for guiding a predetermined section up and down; A spring 300 coupled to the extension part 220 of the shaft 200, the upper end of which is fixed to the extension member 210, and the lower end of which is fixed to the hinge holder 250; A screw portion 520 is formed in the inner circumferential hole to be coupled to the multi-threaded screw portion 240 provided in the protrusion 230 of the shaft 200, and is coupled to the spline groove 664 of the second cylinder 660 on the outer circumferential surface thereof. A piston 500 having a spline 510 which is guided only up and down, and having a check valve 540 formed at an upper center thereof so that the fluid can move upward in one direction; The clearance between the first passage hole 810 and the first cylinder 600 and the second cylinder 660 formed in the hydraulic regulator 700 to the fluid in the fluid chamber provided on the upper side of the piston 500 A flow path guide means (800) having a second flow path hole (820) for moving to the fluid chamber provided at the lower side of the piston (500) through; The hydraulic regulator 700 is characterized in that it has a hydraulic adjustment screw 860 to control the amount of movement of the fluid through the first passage hole 810 when rotated.

Description

Built-in door hinge with spring restoring force and hydraulic damping force {AUTO HINGE DEVICE FOR DOOR}

1 is a cross-sectional view of the built-in door hinge having a spring restoring force and a hydraulic buffer force in accordance with the present invention,

2 is a state diagram used in FIG.

Figure 3 is a perspective view of the cutaway showing the coupling state of the piston and the second cylinder in FIG.

<Brief description of symbols for the main parts of the drawings>

100: housing

120: bracket 200: shaft

210: extension member 220: extension part

230: protrusion 240: multi-threaded screw

250: hinge holder 300: spring

400: Thrust Bearing

500: piston

510: spline 520: screw

540: check valve 600: first cylinder

660: second cylinder 664: spline groove

700: hydraulic regulator 800: euro guide means

810: first euro hole 820: second euro hole

860: Hydraulic adjusting screw

The present invention relates to a door hinge for opening and closing the door with a buffering force, and more particularly, to a built-in door hinge having a spring restoring force and a hydraulic buffering force to automatically close the open door installed inside the door.

In general, the door is installed at the boundary of a place, the entrance of a building or a place where a person enters or exits, and an emergency exit, and the door is opened and closed based on a door hinge connected to the door and the frame. Is done.

However, the door is inconvenient for the person to open and close the door from time to time, moreover, there is a problem that the noise is generated or injured by the door that is suddenly closed.

In order to solve such a problem, the hinge portion of the door and the door frame is typically equipped with an auto hinge device having a spring buffer force.

The door auto hinge device is provided at the hinge of the door and the door frame, has a hydraulic buffer force and a spring restoring force when the door is opened and closed, and performs the automatic closing function by the buffer force and the restoring force, and through the hydraulic buffer force Maintaining proper opening / closing speed during opening and closing not only prevents safety accidents due to sudden opening and closing of the door, but also has the function of automatically closing the door after the door is opened.

However, the conventional door auto hinge device has a problem that the manufacturing cost is greatly increased because complex components are connected and assembled, and each part is fixed in accordance with the connection method such as welding to expect the stability of the product There was a hard problem.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention, to simplify the components of the door hinge mounted on the hinge portion of the door and the door frame to make the hydraulic force and spring restoring force stable In addition, the manufacturing cost can be greatly reduced, and the work time can be greatly reduced by simplifying assembly.

Hereinafter, a built-in door hinge having a spring restoring force and a hydraulic buffering force according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description, well-known technologies related to the present invention may obscure the gist of the present invention. Detailed description will be omitted.

1 to 3, the present invention, in the door hinge is built in the door 10 and provided in the lower hinge of the door 10 and the door frame 20,

The door hinge has a housing 100 which is hollow and coupled to the door 10, a shaft 200 provided inside the housing 100 and coupled to the door frame 20, and the shaft 200. And a spring 300 that provides a restoring force of the door 10 in a fixed state, and a piston 500 coupled to the shaft 200 to move up and down when the housing 100 rotates, and the piston 500. The first cylinder 600 and the second cylinder 660 including the flow path guide means 800 to guide the flow path in accordance with the lifting and lowering, and the hydraulic regulator 700 for adjusting the flow rate through the flow path guide means (800) It is configured to include.

The housing 100 is provided with a bracket 120 on one side of the lower outer circumferential surface of the housing 10 so as to be inserted into and fixed to the lower inner side of the door 10, and the hydraulic regulator 700 is inserted into the upper end to be integrated through welding or pin fixing. The hinge holder 250 having a coupling key is rotatably coupled to the bottom hinge hole 21 of the door frame 20.

On one side of the hydraulic regulator 700, the stepped stepped step 702 is formed up and down so that the first cylinder 600 and the second cylinder 660 is fitted.

The shaft 200 is embedded in the housing 100, and an extension member 210 having a predetermined thickness having an O-ring groove 212 formed on an outer circumferential surface thereof is formed at an upper side thereof, and the extension member 210 has a center. On the lower side of the hinge holder 250 is extended extending portion 220 which is coupled to the rotation preventing state in the same axial direction. In addition, the protrusion 230 having the predetermined section multi-threaded screw portion 240 extends in the coaxial direction.

The first cylinder 600 has a pipe shape, the lower side of the housing 100 is coupled to the airtight state surrounding the expansion member 210, the upper side is integrally coupled to the hydraulic regulator 700. do.

In addition, a thrust bearing 400 is mounted on an upper surface of the shaft 200, and a lower end of the first cylinder 600 is supported on an upper surface of the thrust bearing 400.

In addition, a second cylinder 660 having an inner and outer diameter smaller than the first cylinder 600 is positioned in the inner diameter of the first cylinder 600 to have a predetermined gap, and the second cylinder 660 is The lower end is mounted on the upper surface of the thrust bearing 400 in a state spaced apart from the first cylinder 600 by a predetermined interval inside the first cylinder 600 and the upper end is integrally formed with the hydraulic regulator 700. Spline grooves 664 for guiding the predetermined section up and down in the middle of the inner circumferential surface are formed.

The spring 300 is coupled to surround the extension portion 220 of the shaft 200, the upper end of which is fixed to the extension member 210, and the lower end of the spring 300 is fixed to the hinge holder 250.

The piston 500 has a screw portion 520 formed in the inner circumferential hole to be screwed with the multi-threaded screw portion 240 provided in the protrusion 230 of the shaft 200, the spline of the second cylinder 660 on the outer peripheral surface The spline 510 is coupled to the groove 664 to be guided only up and down, and a check valve 540 is provided at the upper center to allow the fluid to move upward in one direction.

The flow path guide means 800, the first passage hole 810 and the first cylinder 600 and the first fluid in the fluid chamber provided on the upper side of the piston 500 formed in the hydraulic regulator 700 The second passage hole 820 to be moved to the fluid chamber provided on the lower side of the piston 500 through the gap between the two cylinders (660).

The hydraulic control screw 860 is coupled to the hydraulic regulator 700 to control the amount of movement of the fluid through the first passage hole 810 when rotated.

Looking at the working state of the built-in door hinge having a spring restoring force and a hydraulic shock absorbing force according to the present invention configured and coupled as described above are as follows.

In operation, when the door is opened as shown in FIG. 1 or 2, the housing 100 rotates. As the housing 100 rotates, the housing 100 rotates or is integrally coupled with the housing 100. The hydraulic regulator 700 and the piston 500 are rotated together. Then, elastic restoring force is generated in the spring 300 connecting the housing 100 and the shaft 200, and at this time, the piston 500 descends while being rotated by the multi-threaded screw unit 240 of the shaft 200. It will work. According to the above operation, the piston 500 is rotated and lowered along the multi-threaded screw unit 240 of the shaft 200 such that oil under the piston 500 moves upward through the check valve 540.

Subsequently, when the door 10 is closed, the piston 500 moves upward according to the elastic restoring force of the spring 300, and pressurizes the oil stored above the piston 500. Then, the oil pressurized by the piston 500 is the clearance between the first passage hole 810 and the first cylinder 600 and the second cylinder 660 of the hydraulic regulator 700 and the second passage hole 820. It is moved to the lower side through the piston 500, the door 10 is provided with a hydraulic buffer force.

The closing force of the door 10 is adjusted by the rotation of the hydraulic adjustment screw 860 coupled to the hydraulic regulator 700.

In the figure 710 is a filter, 130 is a coupling pin for integrally fixing the hydraulic regulator 700 to the housing 100.

Therefore, the built-in door hinge having the spring restoring force and the hydraulic shock absorbing force according to the present invention, the configuration of the door hinge device installed in the hinge portion of the door and the door frame is simple and stable, the assembly is easy and the assembly is simplified According to the cost reduction effect can be achieved.

Claims (3)

In the door hinge provided on the door and the lower hinge of the door frame, Is inserted into the lower inner side of the door, the bracket 120 is formed to be fixed to the door on one side of the outer peripheral surface, and the hydraulic regulator 700 is inserted and coupled to the upper end and the bottom hinge of the door frame 20 at the bottom A hollow housing (100) rotatably coupled to a hinge holder (250) having a coupling key to be coupled to the hole (21); It is built in the housing 100, the expansion member 210 of a predetermined thickness is formed on one side of the upper side, the lower side with respect to the expansion member 210 is slide-coupled to the hinge holder 250 in an anti-rotation state An extension portion 220, and a shaft 200 having a protrusion 230 having a predetermined section multi-threaded screw portion 240 thereon; A first cylinder (600) having a pipe shape and having a lower side surrounding the expansion member (210) and being hermetically coupled to the inside of the housing (100), and having an upper side integrally coupled to the hydraulic regulator (700); A thrust bearing (400) mounted on the upper circumferential surface of the extension member (210) in the inner side of the first cylinder (600); It has a pipe shape and the lower end is mounted on the upper surface of the thrust bearing 400 in a state spaced apart from the first cylinder 600 by a predetermined interval inside the first cylinder 600 and the upper end of the hydraulic regulator 700 A second cylinder 660 integrally coupled to the second cylinder, and having a spline groove 664 formed at a middle portion of the inner circumferential surface for guiding a predetermined section up and down; A spring 300 coupled to the extension part 220 of the shaft 200, the upper end of which is fixed to the extension member 210, and the lower end of which is fixed to the hinge holder 250; A screw portion 520 is formed in the inner circumferential hole to be coupled to the multi-threaded screw portion 240 provided in the protrusion 230 of the shaft 200, and is coupled to the spline groove 664 of the second cylinder 660 on the outer circumferential surface thereof. A piston 500 having a spline 510 which is guided only up and down, and having a check valve 540 formed at an upper center thereof so that the fluid can move upward in one direction; The clearance between the first passage hole 810 and the first cylinder 600 and the second cylinder 660 formed in the hydraulic regulator 700 to the fluid in the fluid chamber provided on the upper side of the piston 500 A flow path guide means (800) having a second flow path hole (820) for moving to the fluid chamber provided at the lower side of the piston (500) through; Built-in door hinge having a spring restoring force and a hydraulic buffering force, characterized in that it has a hydraulic adjustment screw 860 coupled to the hydraulic regulator 700 to control the amount of movement of the fluid through the first passage hole 810 when rotating. . The method according to claim 1, Built-in door hinge having a spring restoring force and a hydraulic buffer force, characterized in that at least one or more O-ring groove 212 is formed on the outer circumferential surface of the expansion member 210 up and down. The method according to claim 1, Built-in door having a spring restoring force and a hydraulic buffering force, characterized in that the stepped stepped step 702 is formed to be coupled to the first cylinder 600 and the second cylinder 660 is fitted to one side of the hydraulic regulator 700. Hinge.

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