KR102217051B1 - Door hinge with stopper - Google Patents

Abstract

The present invention relates to a door hinge, wherein the first and second housings 110 and 120 are divided into a cylindrical shape and coupled to each other, and a plurality of bearings 510 inside the first and second housings 110 and 120 ) It is installed through the 520 and 540 and is installed inside the rotation shaft 400 with one end protruding to the outside, and the first and second housings 110 and 120 torsion according to the rotation of the rotation shaft 400 A torsion spring 200 that serves as a door check that is controlled and automatically closed, and a stopper 700 that is provided on the outer periphery of the rotation shaft 400 and inside the first and second housings and fixes the rotational position of the rotation shaft 400 ) Is installed in a fire door, etc. to automatically close when opened, and to a door hinge provided with a stopper that maintains an open state if necessary.

Description

Door hinge with stopper

The present invention relates to a door hinge, and more particularly, it is installed on a fire door to automatically close when opened, but an integral stopper is provided so that the open state is maintained in some open positions, so that the convenience of use is improved. It relates to a door hinge provided with a stopper so that the appearance is improved because there is no configuration provided separately or protruding.

In general, a door is installed in an arbitrary space to control access and air conditioning and ventilation by blocking or opening the space.Sliding door (sliding door), hinged door, etc. There is this.

Among them, the hinged door is rotatably installed on the door frame through the door hinge, and the door installed through the conventional door hinge has both opening and closing operations artificially performed by humans, so the door is opened. If it is not closed again in one state, energy wasted for maintaining the cooling and heating of the room, insects, etc. invade, and in some cases, there was a concern of a safety accident.

Accordingly, recently, a door check (also known as a door closer) for automatically closing the door between the door and the door frame, hydraulic or pneumatic cylinders, and the like are further provided.

However, such devices such as door checks require considerable installation and maintenance costs, and are installed to be exposed to the outside of the door to damage the aesthetics.

In addition, when the speed is not controlled during the process of opening and closing the door, there is a problem in that a safety accident such as a hand jam can occur due to the rotation speed of the door.

In addition, when functions such as door checks are deteriorated due to use, or when there is an error in product manufacturing, the door is not completely closed in the process of closing, so there is inconvenience that the user has to apply force again to close it, and the locking device provided on the door In the case of operating, the center of the locking devices did not coincide, causing inconvenience such as having to push the door to the locked position.

And if you want to keep the door open, conventionally, since a stopper must be attached to the lower part of the door in a separate configuration, a separate work process such as drilling to attach the stopper to the door is required, and damage to the door occurs. A separate configuration protrudes to the outside of the door to reduce aesthetics, and there is a problem in that it is inconvenient to use because the user must manipulate the stopper with hands or feet.

Patent Publication 10-2005-0080793 Registered Patent 10-0447081 Patent Publication 10-1997-0027620

An object of the present invention for solving the above problems is to minimize damage to the door by providing both a door check and a stopper in one door hinge, and to improve aesthetics by preventing separate parts from being exposed to the outside of the door as much as possible, It is to provide a door hinge provided with a stopper to improve the convenience of use.

A characteristic of the present invention for achieving the above object is, the first and second housings are divided into a cylindrical shape and coupled to each other; The first and second housing) a rotating shaft installed through a plurality of bearings and having one end protruding to the outside; A torsion spring installed inside the first and second housings to function as a door check to automatically close the torsion according to the rotation of the rotation shaft; A plurality of fixed blocks that are symmetrically spaced apart from each other and rotatable between the base plate coupled to the rotation shaft and rotating along the rotation shaft 400, the outer end edge (hereinafter, tail) formed in a narrow streamlined shape, A spring connecting the plurality of fixed blocks, a straight portion located on the inner circumference of the second housing and guiding the rotational movement of the fixed block, but allowing the plurality of fixed blocks to maintain a straight line with the spring when the door is closed, and a rotating shaft in the opening process A short diameter part with a shorter diameter that is symmetrical so that the tail part of the fixed block is located at the tail of the rotation direction of the door, a locking jaw that prevents the tail part of the fixed block from being caught and closed when the opening operation is stopped while the door is open at a predetermined angle, opening direction When the opening force is removed by allowing the fixing block to be in a straight line with the spring, it is positioned in the front of the locking jaw in order to have a closing release unit that changes the direction so that the tail of the fixing block is located at the rear of the closing direction by the restoring force of the torsion spring A stopper formed and configured to include a guide plate symmetrically formed with respect to the center, provided in the outer circumference of the rotation shaft and inside the first and second housings, and fixing the rotation position of the rotation shaft; It is in the door hinge having a stopper, characterized in that configured to include.

According to the present invention configured as described above, all configurations including a door check and a stopper are provided within one door hinge so that the door is automatically closed after opening the door by simply installing the door hinge inside the door during the installation process of the door. Since it is possible to keep the door open, the convenience of use is improved, the aesthetics is improved because there is no configuration exposed to the outside of the door, and the efficiency is improved because it does not take working time to install a separate configuration outside the door. It works.

In addition, the rotation speed is controlled by adjusting the tension of the torsion spring, which is responsible for the return operation by the door check, and smoothly rotates by using three bearings in the upper/middle/lower part of the rotating shaft provided in the door hinge. have.

In addition, the torsion spring can be easily rotated during the operation for adjusting the tension of the torsion spring, so that the tension control operation is facilitated.

1 is a cross-sectional view showing a door hinge configuration according to the present invention
Figure 2 is a view showing the torsion spring fixing structure of the door hinge according to the present invention
3 and 4 are views showing a stopper configuration of a door hinge according to the present invention
5 and 6 are views showing an example of operation of a stopper of a door hinge according to the present invention
7 to 9 are views showing the configuration of the buffer means of the door hinge according to the present invention
10 and 11 are views showing an operation example of the buffer means of the door hinge according to the present invention

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

As shown in FIG. 1, the door hinge according to the present invention is divided into a cylindrical shape and is coupled to each other by the first and second housings 110 and 120, and the first and second housings 110 and 120 on one side of the inner side. The torsion spring 200 is provided, the first and second housings 110 and 120 are installed on the other side of the inner other through a plurality of bearings 510, 520, 540, and one end is the torsion spring 200 It is connected to the end of the torsion spring 200 and rotates the torsion spring 200, and the other end is provided on the outer periphery of the rotation shaft 400 and inside the first and second housings, and the other end is the rotational position of the rotation shaft 400 It consists of a stopper 700 to fix.

In the above, the first and second housings 110 and 120 are coupled to each other by screwing, and in the coupled state, the upper and lower ends are blocked by the first and second housing caps 310 and 320, respectively, A torsion spring 200 is provided inside the first housing 110 located at the bottom, and a rotation shaft 400 connected to the torsion spring 200 is provided inside the second housing 120 located at the top.

In the above, the first housing cap 310 is inserted into the inner circumference of the lower end of the first housing 110 as shown in FIGS. 1 and 2 to cover the lower end of the first housing 100, and the torsion spring 200 At the side end, one end of the torsion spring 200 is fixed in position. In an embodiment of the present invention, a torsion spring fixing groove 312 is formed at the end of the torsion spring side so that the end of the torsion spring is inserted and fixed.

And the first housing cap 310 and the first housing 110 are concentrically formed with fastening holes 114 and 314 in a direction perpendicular to the axis, and the fastening holes 114 and 314 are formed with respect to the center. A pair of fastening holes symmetrically formed at a desired position after being symmetrically formed, after inserting the first housing cap 310 into the inner circumference of the first housing 110 and rotating a predetermined angle to adjust the tension of the torsion spring 200 The tension of the torsion spring 200 can be adjusted by inserting and fixing the fixing pins 316 with (114) (314).

At this time, the rotation of the first housing cap 310 is performed by inserting and turning a tool such as a rod into a plurality of through holes 318 formed in the axial direction.

The second housing cap 320 is inserted into the upper inner circumference of the second housing 120 and coupled between the rotation shaft 400 and the second housing 120, thereby covering the end of the second housing 120, and As the rotation shaft 400 passes through, an upper bearing 510 for smoothly rotating the rotation shaft 400 is provided.

The inner end of the rotation shaft 400 is formed with a torsion spring fixing groove 412 in which the other end of the torsion spring 200 is located, forming the torsion spring fixing groove 412, and then connecting with the stopper 700 To ensure that the inner end of the rotation shaft 400 is formed in a fork shape.

On the other hand, among the bearings for smoothly rotating the rotating shaft 400, the upper bearing is formed on the second housing cap 510, and the lower bearing 520 is located at the inner end portion of the rotating shaft 400 so that the torsion spring It is provided in the bearing housing 530 which is screwed to the inner end of the second housing 120 so as to have a function of limiting the upper position of the 200, and the middle bearing 540 is the outer circumference of the rotation shaft 400 and the second It is coupled between the inner periphery of the housing 120, so that the rotation shaft is stably rotated by a total of three bearings.

In the drawings, reference numeral 542 denotes an oil seal, S denotes a snap ring for fixing the position of the bearings 510 and 520 and the second housing cap 310, and P denotes a packing for maintaining airtightness.

The stopper 700 is coupled to the rotation shaft 400, as shown in Figs. 1, 3, and 4, the base plate 710 and 720 rotated along the rotation shaft 400, the outer end edge (hereinafter, tail) A plurality of fixing blocks 730 formed in a narrow streamlined shape and symmetrically spaced apart from each other and rotatable between the base plates 710 and 720, a spring 740 connecting the plurality of fixing blocks 730, A straight portion (B) positioned in the inner circumference of the second housing 120 and guiding the rotational movement of the fixing block 730 but allowing the plurality of fixing blocks 730 to maintain a straight line with the spring when the door is closed, a process of opening In the short diameter part (B) with a shorter diameter that is symmetrical so that the tail part of the fixed block is located at the rear end of the rotation direction of the rotating shaft, the tail part of the fixed block is caught and closed when the opening operation is stopped while the door is open at a predetermined angle. The locking jaw (C) is located in front of the locking jaw in the opening direction, so that the fixing block is in a straight line with the spring, and when the opening force is removed, the tail of the fixing block 730 is located at the rear of the closing direction by the restoring force of the torsion spring. It is formed to sequentially have a closing release portion (D) for changing the direction so as to be configured to include a guide plate 750 formed symmetrically with respect to the center.

The base plates 710 and 720 are drilled with an insertion hole into which the end fork portion of the rotation shaft is inserted, so that the base plates 710 and 720 rotate along the rotation of the rotation shaft.

In the above, the guide plate 750 has a short-diameter portion (hereinafter referred to as a short-diameter portion) (A) and a long-diameter portion (hereinafter referred to as a long-diameter portion) (B) continuously and repeatedly positioned, and the short-diameter portion (A) is a spring ( 740) and the fixed block 730 is formed shorter than the sum of the straight length, the long-diameter portion (B) is formed to correspond to the sum of the straight length of the spring 740 and the fixed block 730, and the short-diameter portion (A ) To the long-diameter portion (B), a sharply bent engaging jaw (C) is formed, and the portion that passes from the long-diameter portion (A) to the short-diameter portion (B) is formed smoothly, so that the fixed block 730 is In the process of reverse rotation, that is, closing, the tail of the fixing block 730 is caught by the locking jaw (C) so that reverse rotation is prevented so that the open state is maintained, and the guide plate 750 controls the position of the fixing block. It can be transformed into any shape.

One or more of these guide plates 750 are installed so that the open state is maintained at various angles.

In the drawings, reference numeral 760 denotes a hinge pin for installing the fixing block 730 and 770 denotes an installation pin for installing the spring 740.

Looking at the operation of the stopper 700 with reference to FIG. 5, in the process of opening the door, the tail of the fixing block 730 according to the rotation direction of the rotation shaft and the curvature of the guide plate 750 is shown in FIG. ) To move along the inner circumference of the guide plate 750 by the tension of the spring 740 while being bent in the direction opposite to the rotation direction as in (b), and in a fully open state, maintain a straight line as in (c), and Even in the process of closing, the tail portion of the fixing block 730 is positioned in the opposite direction to the rotational direction as shown in (d) of FIGS. 5(c) and 5, and when it is completely closed, it returns to its original position as shown in (e).

Meanwhile, in order to fix the door in an open state, as shown in FIG. 6, when the door is completely closed (a), the plurality of fixing blocks 730 are arranged in a straight line with the spring 740, and the door is at a predetermined angle. That is, when the opening operation is terminated at the position (b) that has passed the locking projection (C) of the guide plate (750), the tail of the fixing block 730 is located on the locking projection (C) as shown in (c), so it cannot be closed again. When the door is opened a little further, the fixed block 730 moves a little further, and the spring and the fixed block become a straight line as shown in Fig. 6(e) when the door is opened again. After the opening operation is finished, the rotation shaft rotates by the restoring force of the torsion spring, and the tail of the fixing block is located at the rear of the rotation direction from the closing direction as shown in (e), so that the door does not interfere with closing.

On the other hand, the door hinge is provided on the outer periphery of the rotation shaft 400 and inside the first and second housings, and further includes a buffering means 600 for slowing the rotational speed of the rotation shaft 400 by hydraulic pressure.

The buffer means 600 is formed by a difference between the outer diameter of the rotation shaft 400 and the inner diameter of the second housing 120 as shown in FIGS. 7 to 9 and is filled with oil therein, and the rotation shaft A pin support groove 620 formed in the axial direction at a portion located inside the hydraulic chamber 610 of 400, one edge is formed in a curved shape so that it flows in the pin support groove 620, and from the curved edge A wing portion inclined at a predetermined angle to the outside is formed, and the wing portion is formed to be inclined at a predetermined angle to slow the door closing speed while forming pressure in the process of opening the door, and is formed in a gap between the inner peripheral surface of the second housing 120 and the outer peripheral surface of the rotating shaft 400. A buffer pin 630 formed to allow oil to pass through, installed in a longitudinal direction on one side of the hydraulic chamber 610, the inner side in contact with the outer circumference of the rotation shaft 400 and the outer side in contact with the inner circumference of the second housing 120 It is configured to include a blade 640 for adjusting the rotation angle of the pin 630.

'모양으로 형성되며, 이외에도 다양한 모양으로 형성이 가능하며, 상기 완충핀(630)을 중심으로 유압실(610)은 열리는 과정에서 넓어지는 전방 유압실과 닫히는 과정에서 넓어지는 후방 유압실로 구분된다.In an embodiment of the present invention, the buffer pin 630 is'

It is formed in a'shape, and can be formed in a variety of other shapes, and the hydraulic chamber 610 around the buffer pin 630 is divided into a front hydraulic chamber that expands during the opening process and a rear hydraulic chamber that expands during the closing process.

In addition, a concave groove 650 is further formed in the rotation shaft 400 to increase the volume of the hydraulic chamber by being connected to one edge of the pin support groove 620.

In addition, an oil discharge hole 660 for supplying oil into the hydraulic chamber 610 is drilled in the upper portion of the groove 650, and an axial direction connected to the oil discharge hole 660 is at the center of the rotation shaft 400. The oil injection hole 670 is perforated, and the upper end of the oil injection hole 670 is opened and closed to maintain airtightness through the oil injection hole cap 680, and the upper and lower positions of the oil injection hole cap 680 are adjusted. As a result, the hydraulic pressure inside the hydraulic chamber 610 is adjusted, and thus the opening/closing speed of the door is also controlled.

In addition, a hydraulic release 665 connected to the oil discharge hole 660 is further formed on the rotation shaft 400, and the angle between the oil discharge hole 660 and the oil release 665 is somewhat less than the blade width. It is formed to have a wide angle, so that when the door is completely closed, the oil discharge hole 660 and the hydraulic release supply 665 are respectively located on both sides of the blade, that is, the front hydraulic chamber and the rear hydraulic chamber, respectively, and in the process of closing the door The hydraulic release 665 is opened at the beginning and all are located in the front hydraulic chamber together with the oil discharge hole 660, and the hydraulic release 665 is closed by the blades in the second half, and the hydraulic release immediately before the door is completely closed. As the supply 665 is opened, it is located in the rear hydraulic chamber, so that the O'Neill inside the front hydraulic chamber is moved to the rear hydraulic chamber through the oil discharge hole 660 and the hydraulic release 665, and resistance is removed so that the door is completely closed at a high speed. do.

In addition, the blade 640 is fixed by being inserted into a blade fixing groove 644 formed perpendicularly to the inner peripheral surface of the second housing 120 by a fixing protrusion 642 protruding in the longitudinal direction at the outer center.

As shown in FIG. 10, the buffer means 600 configured as described above does not contact the inner circumferential surface of the second housing during forward rotation, that is, in the process of opening the door, so that the oil in the rear hydraulic chamber flows along the edge of the buffer pin and into the front hydraulic chamber. As it moves, it rotates smoothly.

10 shows the door fully closed (0°), 90° and 180° open.

In the process of opening and closing the door again, that is, closing by the torsion spring, as shown in FIG. Since it cannot move smoothly to the seal, the pressure inside the front hydraulic chamber increases and the closing speed slows down, and after the door is fully open (180°) to 90° open, just before it is completely closed, that is, in the open state about 10°. As the oil in the front hydraulic chamber flows to the rear hydraulic chamber by the hydraulic release 665, resistance is reduced so that the door is completely closed.

On the other hand, in order to keep the door open by the stopper 700 and then caught by the locking jaw C as described above, the door must be opened and then rotated in reverse. In this process, the In order to prevent the rotational speed from slowing, a groove for smoothing the oil flow is further formed at a position corresponding to the locking projection C of the second housing 120 forming the buffering means 600.

In addition, in order to quickly equilibrate the hydraulic pressure inside the hydraulic chamber when the door is open or closed, grooves for smooth oil flow are further formed on both sides of the inner wall when the door of the second housing is closed.

The present invention configured as described above is installed symmetrically on the upper and lower portions of the fire door, etc., and automatically closes by the torsion spring when the door is opened, and in this process, the closing speed by the buffer means is slowed to prevent safety accidents. Is done.

In addition, in order to maintain the open state, when the door is opened and released, the open state of the door is maintained within a predetermined angle range by the stopper.

110: first housing 120: second housing
200: torsion spring 400: rotating shaft
600: buffer means 700: stopper

Claims (5)

The first and second housings 110 and 120 are divided into a cylindrical shape and coupled to each other;
A rotation shaft 400 installed inside the first and second housings 110 and 120 via a plurality of bearings 510, 520, and 540 and having one end protruding to the outside;
A torsion spring 200 installed inside the first and second housings 110 and 120 to function as a door check to automatically close the torsion according to the rotation of the rotation shaft 400;
The base plate 710, 720, which is coupled with the rotation shaft 400 and rotates along the rotation shaft 400, has a narrow streamlined outer end edge (hereinafter, referred to as the tail), and is symmetrical between the base plates 710 and 720. A plurality of fixed blocks 730 spaced apart from each other and provided to be rotatable, a spring 740 connecting the plurality of fixed blocks 730, the second housing 120 is located in the inner circumference of the fixed block 730 A straight portion (B) that guides the rotational movement, but keeps the plurality of fixed blocks 730 in a straight line with the spring when the door is closed. Short-diameter portion (B) with a shorter diameter, locking jaw (C) that prevents the tail portion of the fixed block from being caught and closed when the opening operation is stopped while the door is open at a predetermined angle, and is positioned in front of the locking jaw in the opening direction and fixed When the opening force is removed by making the block straight with the spring, it is formed to sequentially have a closing release part (D) that changes the direction so that the tail of the fixed block 730 is located at the rear of the closing direction by the restoring force of the torsion spring. A stopper 700 configured to include a guide plate 750 formed symmetrically with respect to the center, provided in the outer circumference of the rotation shaft 400 and inside the first and second housings, and fixing the rotational position of the rotation shaft 400;
Door hinge having a stopper, characterized in that configured to include. According to claim 1, The door hinge is provided on the outer periphery of the rotation shaft 400 and the inside of the first and second housings, and a buffer means 600 for slowing the rotational speed of the rotation shaft 400 by hydraulic pressure is further provided,
The buffering means 600 is formed by a difference between the outer diameter of the rotating shaft 400 and the inner diameter of the second housing 120 and filled with oil therein, and the hydraulic chamber 610 of the rotating shaft 400 A pin support groove 620 formed in an axial direction in a portion positioned inside, a wing portion formed in a curved shape so that one edge flows within the pin support groove 620 and inclined at a predetermined angle outward from the curved edge And the wing part is formed to be inclined at a predetermined angle to slow the door closing speed while forming pressure in the process of opening the door, and a buffer pin formed to allow oil to pass through the gap between the inner peripheral surface of the second housing 120 and the outer peripheral surface of the rotation shaft 400 630, installed in the longitudinal direction on one side of the hydraulic chamber 610, the inner side in contact with the outer circumference of the rotation shaft 400 and the outer side in contact with the inner circumferential surface of the second housing 120 to adjust the rotation angle of the buffer pin 630 Door hinge with a stopper, characterized in that configured to include a blade (640). The door hinge of claim 1, wherein at least one stopper (700) is provided. According to claim 1, In order to keep the door open by the stopper (700) and then caught by the locking jaw (C), the locking jaw () of the second housing (120) forming the buffer means (600) C) a door hinge with a stopper, characterized in that further forming a groove to facilitate oil flow at the position corresponding to the position. The method of claim 1, wherein a lower portion of the first housing 110 is sealed with a first housing cap 310 inserted therein, and a lower portion of the first housing cap 310 and the first housing 110 is concentrically formed. The fastening holes 114 and 314 in the vertical direction to the axis are formed, and the fastening holes 114 and 314 are formed symmetrical with respect to the center, so that the first housing cap 310 is attached to the first housing ( 110) After inserting into the inner circumference, rotating the torsion spring 200 by a predetermined angle to adjust the tension, and then inserting and fixing the fixing pin 316 with a pair of fastening holes 114 and 314 symmetrical at the desired position Door hinge provided with a stopper, characterized in that adjusting the tension of 200.

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