KR100470568B1 - Buffer of a hinge to open and shut a door - Google Patents

Abstract

Door hinge for opening and closing the door of the present invention using the torsional tension of the spring 140 on the inner circumference of the upper housing 110 to which the door rotating plate 130 formed a plurality of fastening holes 131 to open and close the door The piston 230 is installed by the rotational movement of the cam 221 in the interior of the lower housing 210 which is installed to be automatically connected to the vertically connected to the lower one side of the upper housing 110 to the return to 100 automatically. A hydraulic shock absorbing hinge 10 provided with a shock absorber 200 for moving up and down and controlling the opening and closing speed of the door 1 by the flow of hydraulic pressure filled in the lower housing 210, and the hydraulic shock absorbing hinge ( The upper housing 110 and the lower housing 210 are coupled to the lower side of the door 1 is installed up and down, and a plurality of springs 350 and 360 are introduced into the inner circumference to double the torsional tension of the spring. Opening and closing of the door (1) more flexibly It consists of a spring-buffered hinge (30) to allow the ear to easily adjust the strength of the torsional tension of the spring that automatically opens and closes the door, and maintains a constant cushioning force even when the door is opened suddenly or rapidly. It can suppress the occurrence of safety accidents due to the opening and closing of doors, and by excluding the complexity of the configuration, it can be applied to places with a large amount of opening and closing doors or heavy weight doors due to the large floating population, which minimizes ghosting in installation and maintenance. It has the effect of extending the life of the hinge.

Description

BUFFFER OF A HINGE TO OPEN AND SHUT A DOOR}

The present invention relates to a hydraulic shock-absorbing hinge, and in detail, when opening and closing the door, the opening and closing of the door is smooth and smooth, and the opening and closing speed of the door can be easily and conveniently adjusted, as well as door opening and closing which can be applied to a heavy weight door. It relates to a buffer hinge for.

In general, the door shock absorber is to allow the accessor to open and close the door to maintain the proper speed when opening and closing the door, usually by attaching a door closer, a separate shock absorber on the upper side of the door frame and the door opening and closing speed It was used to convert or use a free hinge installed a spring inside the existing hinge.

However, the door closer of the conventional door shock absorber has a problem in that the cumbersome installation process and the ghost rises, and in the case of the free hinge, when the door is used in a large amount of opening and closing of the door, the fatigue limit is reached. There is a problem that other spring breaks occur, or the general user is difficult to adjust the opening and closing speed of the door easily and easily, the safety accident of the elderly or children using such a door remarkably.

In particular, although the hydraulic shock absorbing hinge is conceived to compensate for this phenomenon, the hydraulic shock absorbing hinge as described above has a problem in that the configuration for having a shock absorbing function is quite complicated, and frequent failure occurs due to the complicated configuration. All.

In addition, when the door in which the hydraulic shock absorbing hinge is installed is opened or closed abruptly, the hydraulic pressure is generated in the hydraulic shock absorbing hinge, causing the door to open and close about the hinge repeatedly. There was a problem that was not made.

Therefore, the main object of the present invention is to provide a shock absorbing hinge for door opening and closing to be able to easily adjust the opening and closing speed of the door to easily adjust the strength of the torsional tension of the spring installed inside the hinge to automatically open and close the door. have.

Another object of the present invention is to suppress the hydraulic overload that may occur inside the hinge by the opening and closing speed of the door to maintain a constant buffer force so that the door can be opened and closed smoothly and naturally, due to the opening and closing of the door of the elderly and children It can suppress the occurrence of safety accidents.

Another object of the present invention is to install a hydraulic shock-absorbing hinge on the upper part of the door and a spring-type shock absorbing hinge having a plurality of springs in the lower part of the door, so that the spring is not easily broken even in a heavy door or heavy door. The present invention provides a shock absorbing hinge for opening and closing the door to increase the elasticity so as not to cause a failure while extending the life of the hinge.

To achieve this purpose, the door hinge for opening and closing the door according to the present invention has a torsional tension of the spring 140 at the inner circumference of the upper housing 110 to which the door pivot plate 130 having a plurality of fastening holes 131 is formed. Rotating movement of the cam 221 in the interior of the lower housing 210 is installed by the opening and closing device 100 for automatically returning the opening and closing of the door and coupled vertically connected to the lower one side of the upper housing 110. And a hydraulic shock absorbing hinge 10 having a shock absorber 200 for controlling the opening and closing speed of the door 1 by moving the piston 230 upward and downward to control the opening and closing speed of the door 1 by the flow of hydraulic pressure filled in the lower housing 210. Combining the upper housing 110 and the lower housing 210 to be vertically connected to the lower side of the door 1 in which the hydraulic buffer hinge 10 is installed, and the spring (350,360) in the plurality of the inner periphery Doors by doubling the torsional tension of the (1) is composed of a spring-buffer hinge 30 to be able to more elastically return the opening and closing of the technical features of the basic configuration.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention configured as described above are as follows. 1 is a front view showing a door with a door hinge opening and closing of the present invention, Figure 2 is an exploded perspective view showing a hydraulic buffer hinge of the door opening and closing buffer hinge of the present invention, Figure 3 a, b, c The hydraulic buffer hinge of the door opening and closing buffer hinge of the invention, a) is a cross-sectional view showing a hydraulic buffer hinge when the door is opened, b) is a cross-sectional view showing a hydraulic buffer hinge when the door is closed, c) is a 4 is an exploded perspective view showing the spring-type buffering hinge of the door opening and closing buffer hinge of the present invention, Figure 5 a, b, c is a spring of the door opening and closing buffer hinge of the present invention As a cushioning hinge, a) is a cross-sectional view showing a spring-type buffering hinge when the door is opened, b) is a cross-sectional view showing a spring-type cushioning hinge when the door is closed, c) is to adjust the opening and closing speed of the door It is sectional drawing which showed. Figure 6 a, b, c is a partially enlarged perspective view showing the hydraulic input means of the hydraulic buffer hinge of the present invention.

As shown in Figures 1 to 6 a, b, c, the door opening and closing hinge 10 of the present invention is the upper housing 110 to which the door rotating plate 130 is formed a plurality of fastening holes 131 A lower housing having an opening and closing device 100 for automatically returning the opening and closing of the door by using the torsional tension of the spring 140 at the inner circumference of the inner side and being vertically connected to the lower side of the upper housing 110. Inside the 210, the shock absorber for controlling the opening and closing speed of the door (1) by moving the piston 230 up and down by the rotational movement of the cam 221 by the flow of hydraulic pressure filled in the lower housing 210 ( A hydraulic shock absorbing hinge 10 having a 200 installed therein, and the upper housing 110 and the lower housing 210 are coupled to each other so as to be vertically connected to the lower side of the door 1 on which the hydraulic shock absorbing hinge 10 is installed. Insert a plurality of springs 350 and 360 at the periphery to improve the torsional tension of the springs. It constitutes an opening of a visible on the door (1) with a spring buffer hinge 30 for so as to return to the more flexible. Here, as shown in Figures 2 and 3a, b, c, the configuration of the hydraulic buffer hinge for the door opening and closing of the present invention is as follows.

The opening and closing device 100 is fixed to the fixing block 112 on the inner circumference of the position where the upper housing 110 and the lower housing 210 are in contact with each other by interlocking gears on the upper inner circumference of the upper housing 110. The main clutch 111 and the sub clutch 122 which transmit the rotational force only in the side direction are connected to each other.

Here, the main clutch 111 is fixed so as not to be rotated by the fixing pin 115 at the inner circumference of the upper housing 110, and the sub clutch 122 is installed on the upper end of the upper housing 110 to hold the main clutch 111. It is fixed by bonding to the lower outer periphery of the control block 121 of the tension adjusting means 120 penetrating).

 In addition, a spring 140 is embedded between the sub clutch 122 and the fixing block 112 of the opening and closing device 100, but is mounted in the mounting groove 112 a formed at the bottom of the sub clutch 122 and the top of the fixing block 112. The upper and lower ends of the spring 140 are bent and fixed to each other, and then the hydraulic input unit 220 rotates in association with the upper housing 110 whenever the door 1 is opened and closed through the lower inner periphery of the upper housing 110. Couple to the control block 121 of the tension adjusting means 120. The shock absorber 200 is coupled to the upper housing 110, the hydraulic input means 220 protruding into the lower portion is placed in the upper side of the lower housing 210, the upper housing 110 when opening and closing the door (1) Piston 230 for up and down linear reciprocating motion by the rotational movement of the hydraulic input means 220 in conjunction with the) is placed in the first cylinder portion 211 in the upper opening in the lower housing 210 in the center of the lower The piston 230 is elastically pushed up of the first cylinder 211 through the tension spring 250.

The piston 230 is coupled to the oil seal 228 in the lower portion of the cylindrical outer periphery and forms an inner space to open the upper end through the through hole 231 in the center and install the check valve 233 to the side do.

In addition, the hydraulic passage 241 in the through hole 231 of the piston 230 is upper Through the hydraulic shaft 240 formed to open to the outer peripheral side to be moved up and down along the outer periphery of the hydraulic shaft 240, but by forming a fine passage (231a) finely formed the coupling error range Allow a small amount of hydraulic pressure to pass before this overload occurs.

Here, the outer circumference of the hydraulic shaft 240 is tapered gradually from the upper side to the lower side to gradually taper, so that the clearance of the micro-path 213a gradually increases as the piston 230 descends to the lower outer circumference of the hydraulic shaft. Allow large flow rates to pass through.

 The outer periphery of the piston 230 is not rotated in the first cylinder portion 211 by the engaging bolt 232a is formed through the outer periphery of the lower housing 210 by forming the engaging groove 232 in the longitudinal direction. It is possible to limit only the length of movement in the vertical direction without using.

In particular, the bypass passage 213 is bent inwardly at the lower end of the first cylinder portion 211 of the lower housing 210 so as to communicate with the hydraulic passage 241 of the hydraulic shaft 240 and the lower housing 210. In the outer periphery of the perforated coupling hole 214 is interlocked with the bypass passage 213, but the coupling hole 214 is coupled to the flow control bolt 214a end of the flow control bolt 214a is bypassed To adjust the opening of the passage (213).

The hydraulic input unit 220 is formed in a cylindrical shape is coupled to the oil seal 228 on the outer periphery and the outer periphery cut in an oblique direction to the center of one side of the rotating cam 221 having a space inside the center of the cylindrical The shaft 222 is integrally formed, but the outer periphery of the shaft 222 is formed by forming a plurality of engaging projections 223 of the gear. The rotary cam 221 of the hydraulic input means 220 is shown as another embodiment of the hydraulic input means 220, as shown in Figure 6a, the hydraulic input means 220 is a rotary cam 221 Guide protrusions 226 are formed on the outer circumference of the helical by a predetermined length, and guide holes 227 having the same linear shape form an outer circumference in communication with the inner space in the center of the piston 230. Is guided by the guide hole 227 is configured to rotate the hydraulic input means 220 to 180 ° but is rotated by 90 ° divided by each stop. As shown in Figure 6b, as shown in another embodiment of the hydraulic input means 220, the hydraulic input means 220 protrudes the guide protrusion 226 on the outer periphery of the rotary cam 221 and the piston ( 230 is formed with a spiral guide hole 227 on the outer periphery so as to communicate with the inner space to one side by inserting the rotary cam 221 into the inner space of the piston 230, the guide protrusion 226 guide hole 227 Under the guidance of the hydraulic input means 220 may be rotated by 180 ° but may be configured to rotate while being divided by 90 °. In addition, as shown in Figure 6c, by cutting in the oblique direction corresponding to the center side from the upper end to form the two concave portion 224 and the convex portion 225 corresponding to the outer circumference and the piston 230 in close contact with this The top of the () is formed to be the same as the cam diagram of the rotary cam 221 while forming a groove at the vertex of the convex portion 225 to be caught by the convex portion 225 of the piston 230 each time the door (1) When opening and closing the hydraulic input means 220 may be formed to be rotated while stopping every 90 °.

The tension adjusting means 120 installed in the upper housing 110 to adjust the strength and weakness of the spring 140 of the hydraulic buffer hinge 100 is configured as described above is a wrench groove in the control block 121 of the multi-stage. A portion in which the locking protrusion 223 is formed at the end of the shaft 222 of the hydraulic input means 220 which partially protrudes to the upper portion of the upper housing 110 by forming a hole 121a and forming a hole of a predetermined depth into the inside of the lower center. To combine.

On the outer circumferential side of the control block 121, the screw hole 121b communicates with a hole formed in the center of the control block 121 to couple the support block 123 having the screw hole 121b to the outer circumference. The support block 123 has a support pin 125 which is elastically protruded or embedded in the outside by the contact spring 124 so that one side of the support pin 125 is a locking projection 223 of the hydraulic input means 220. To be resilient. Next, as shown in Figures 4 to 5a, b, c, look at the configuration of the spring buffer device 300 as follows.

The spring buffer device 300 has a first spring 350 and the second spring 360 in the inner circumference of the upper housing 310 and connected to each other by a gear wheel between the plurality of springs (350,360) in one direction The main clutch 311 and the sub-clutch 341 penetrated by matching the polygonal hole 331b in the center while transmitting the rotational force only, the first spring 350 and the second spring 360 abut the flange ( 331 and upper and lower ends of the clutches 311 and 341 are provided with mounting grooves 112a to fix the upper and lower portions of the respective springs 350 and 360.

Here, the spring buffer device 300 is coupled to the flange 331 to the inner peripheral upper and lower housing 320 of the upper housing 310, respectively, but the wrench on the upper end of the flange 331 is coupled to the upper housing 310 The polygonal shaft 340 having the same angle is inserted to the upper end of the flange 331 coupled to the lower housing 320 by forming the groove 331a and penetrating the polygonal hole 331b to the center thereof.

In addition, the flange 331 and the main clutch 311 is fixed to the inner periphery of the upper housing 310 and the lower housing 320 with a fixing piece 313 and the flange 331 is coupled to the upper housing 310 and The main clutch 311 rotates while interlocking with the polygon shaft 340. The sub clutches 341 are configured to be fully coupled to the polygon shaft 340.

Referring to the operation of the present invention as follows.

When the hydraulic buffer hinge 100 and the spring-type buffer hinge 200 coupled to the upper, lower portion of the door 1 is operated when the door 1 is opened as follows.

First, the operating method of the hydraulic buffer hinge 100 is as follows.

As shown in FIG. 3A, when the door 1 is opened, the upper housing 110 is rotated by the rotating plate 130 coupled to the door 1, and the main clutch fixed to the inner circumference of the upper housing 110 is rotated. The engagement with the cogwheels by 111 causes the subclutch 122 to rotate in a ratchet drive manner.

At this time, the adjustment block 121 of the tension adjusting means 120 is rotated together by the sub clutch 122, and the hydraulic input means 220 is caught in the latching projection method by the latching block 223 adjustment block 121 It is rotated in conjunction with the support pin 125 coupled to.

At the same time, the spring 140, which was wound, rotates the hydraulic input means 220 at the same time while rotating the sub clutch 122 in the other direction while the torsional tension is released. When the rotary cam 221 of the hydraulic input means 220 is rotated, the pressing force held by the piston 230 is released while the piston 230 is first cylinder part 211 by the tension spring 250 located below. It will gradually move upwards. At this time, the hydraulic pressure filled between the rotary cam 221 and the internal space of the piston 230 is discharged to the first cylinder portion 211 through the check valve 233 of the piston 230 of the hydraulic input means 220 By slowly rotating the upper housing 110 to interlock with the hydraulic input means 220 so as to largely lose the rotational force so that the closing speed of the final door 1 can be opened more gently and smoothly. In addition, the door 1 is often opened rapidly and rapidly. At this time, the hydraulic shock absorbing hinge 100 installed in the door 1 operates as follows. When the door 1 is suddenly opened, the hydraulic pressure filled in the first cylinder 211 is minutely formed between the outer circumference of the hydraulic shaft 240 and the through hole 231 of the piston 230. By moving a small amount of hydraulic pressure into the internal space of the piston 230 and the rotary cam 221 through the suppression of the hydraulic pressure that can be received in the first cylinder portion 211, the door 1 is opened and closed stops It will open smoothly and smoothly. In addition, the outer periphery of the hydraulic shaft 240 is tapered in a narrow form gradually from the top to the lower portion gradually through the micro-path 231a when the piston 230 moves downward along the outer periphery of the hydraulic shaft 240. The passage of a large amount of hydraulic pressure allows the opening speed of the door 1 to be accelerated gradually when the door 1 is almost opened or closed. Afterwards, the hydraulic shock-absorbing hinge 10 when closing the door 1 is as follows. First, as shown in FIG. 3b, when the door 1 is closed, the upper housing 100 is fixed to the inner circumference of the upper housing 100 by rotating the upper housing 100 by the rotation plate 130 coupled to the door 1. Engagement with the cogwheels by the main clutch 111 rotates the sub clutch 122 in a ratchet driving manner. At this time, the adjustment block 121 of the tension adjusting means 120 is rotated together by the sub clutch 122, and the hydraulic input means 220 is caught in the latching projection method by the latching block 223 adjustment block 121 It is interlocked by the support pin 125 coupled to the reverse rotation. At the same time, the spring 140, which is installed between the sub clutch 122 and the fixed block 112, is further twisted and the rotary cam 221 lowers the piston 230 due to the rotational movement of the hydraulic input means 220. The first cylinder 211 of the housing 210 is pushed down. The hydraulic pressure which is filled in the first cylinder part 211 by the piston 230 and the pressure is increased is the hydraulic passage which is opened in the upper circumferential direction from the lower end of the hydraulic shaft 240 via the bypass passage 213. Move along 241. Thus, the hydraulic pressure slowly moves along the bypass passage 213 and the hydraulic passage 241 having a smaller diameter to the inner space side corresponding to the rotary cam 221 and the piston 230 of the hydraulic input means 220, respectively. As the frictional force of the piston 230 connected to the rotary cam 221 of the input unit 220 increases, the rotational force of the hydraulic input unit 220 is largely lost, so that the door can be smoothly closed. As described above, the operating method of controlling the torsional tension of the spring 140 installed inside the hydraulic shock absorber hinge 10 coupled to the door 1 can be easily adjusted to the desired opening and closing speed by the user. Is as follows. As shown in Figure 3b, by using a wrench in the wrench groove 121a of the upper end of the control block 121 of the tension adjusting means 120 is spaced at a predetermined interval on the upper end of the upper housing 110 by using a wrench. When the hydraulic input means 220 is rotated by the ratchet driving method by the support pin 125 elastically hung on the locking projection 223 of the hydraulic input means 220. The subclutch fixed to the shaft 222 of the rotating hydraulic input means 22 is equally interlocked while rotating the spring 140 further to increase the torsional tension of the spring 140. At this time, the main clutch 111 engaged with the sub clutch 122 and the cog wheels prevent the rotation of the sub clutch 122 in the reverse direction by the ratchet driving method of the sub clutch 122 that rotates while twisting the spring 140. Maintain rotation. In this way, the opening and closing speed of the door 1 is changed according to the rotation speed of the tension adjusting means 121 by twisting the spring. In this way, the user can finely and easily adjust the opening and closing speed of the door 1. It becomes possible. On the contrary, if the opening and closing speed of the door 1 is to be set again from the beginning, as shown in FIG. 3C, first, the user strikes the upper end of the adjusting block 121 using a tool such as a hammer. The hitting control block 121 moves the hydraulic input means 220 downward while moving downwardly by the length A spaced apart from the upper end of the upper housing 110. At the same time, the sub clutch 122 joined to the shaft 222 of the hydraulic input means 220 is released at the moment of engagement between the main clutch 111 and the gear wheel while interlocking with the hydraulic input means 220. At this time, while the force for maintaining the torsional tension of the twisted spring 140 is released, the sub-clutch 122 and the hydraulic input means 220 are restored to the state where the initial torsional tension is not applied, and the spring 140 is twisted. The tension is released. At this time, when the hydraulic input means reverses, the support pin 125, which is bound to the locking projection 223 of the hydraulic input means 220, is elastically moved along the inclined surface of the gear wheel into the support block 123 by the ratchet driving method. Is not moved does not control the reverse rotation of the hydraulic input means 220. Subsequently, when the torsional tension of the spring 140 is released, the sub-clutch 122 is restored to the state before the first torsional tension is set because the cogwheels are engaged with the main clutch 111 again by the tension of the spring 140. Will be. In addition, as shown in Figure 6a, b, c, if the cam line of the rotary cam 221 of the hydraulic input means 220 that rotates while being in close contact with the upper end of the piston 230 can be rotated every 90 degrees The door 1 can be kept open or closed at a 90 ° angle. That is, in the case of FIG. 6A, when the convex portion 225 of the rotary cam 221 is positioned in the concave portion 224 of the piston 230, and the hydraulic input unit 220 rotates, the convex portion of the rotary cam 221 is rotated. When the part 225 rotates while rubbing against the upper end of the piston 230 having the same cam line, the piston 230 moves downward of the convex part 225 of the piston 230 while being moved downward by the rotating cam 221. The convex portion 225 of the rotary cam is caught in the groove formed at the top, thereby opening or closing the door 1 at a 90 ° angle. Next, the operation method of the spring-type buffering hinge 30 is coupled to the lower portion of the door 1 is as follows. First, as shown in FIG. 5A, when the door 1 is opened, the flange 331 fixed to the upper housing 310 rotates to further twist the first spring 350 and simultaneously engages the upper housing 310. The main clutch 311 and the sub clutch 341 are rotated by the polygon shaft 340 coupled to the polygon hole 331b of the flange 331, which makes the second spring 360 more twisted. When opening the door 1, the torsional tension is doubled by the plurality of springs 350 and 360, the speed at which the door 1 is opened cannot be opened above a certain speed. In addition, as shown in Figure 5b, the spring-type buffering hinge when closing the door 1 is the first spring 350 and the second spring 360 installed in the upper housing 310 and the lower housing 320 is twisted As the tension is released, the flanges 331 and the main clutch 311 and the subclutch 341, which are coupled to each of the upper and lower ends of the plurality of springs 350 and 360, are rotated integrally by the polygon shaft 340 to rotate the door. The upper housing 310 which is joined to the plate 314 is reversely rotated so that the final door 1 can be naturally closed. At this time, the first spring 350 and the second spring 360, which are embedded in a plurality of spring-type cushioning hinges 30, may adjust the torsional tension according to the difference between the elastic modulus and the diameter. In the case of using a long spring in the direction, the door (1) can be opened and closed more smoothly. Next, a method of increasing the torsional tension of the plurality of springs 350 and 360 of the spring-type cushioning hinge 30 and releasing them are as follows. First, as shown in Figure 5a, by rotating in one direction by using a wrench in the wrench groove 331a of the flange 331 coupled to the upper housing 310 of the spring-type buffer hinge 30, the flange ( 331 is rotated at the inner circumference of the upper housing 310 to rotate the first spring 350 at the bottom. The main clutch 311 and the sub clutch 341 engaged with the cog wheel by the rotation of the first spring 350, in particular, the flange 331 and the main clutch 311 coupled to the upper housing 310 when rotating. ) And the polygon shaft 340 penetrated through the polygon hole 331b of the subclutch 341 to rotate integrally. In addition, the second spring 360 coupled to the lower end of the subclutch 341 is formed on the upper and lower sides of the flange 331 coupled to the inner circumference of the lower housing 320 of the first spring 350 and the second spring 360. The torsional tension is increased to increase the opening and closing speed of the door (1). On the contrary, the first spring 350 and the first spring 350 and the first spring 350 may be restored to a state before the opening / closing speed of the door 1 is restored or set before the torsional tension between the first spring 350 and the second spring 360 is adjusted. The method of newly setting the tension of the two springs 360 is as follows. First, as shown in FIG. 5C, the user dismantles the fixing piece 313 that fixes the flange 331 coupled to the upper housing 310, and then the wrench groove of the flange 331 coupled to the upper housing 310. The upper end of the polygon shaft 340 partially protruded at 331a is hit with a tool such as a hammer. When the impacted polygonal shaft 340 slides downward and moves downward while interlocking with the subclutch 341 fixed to the lower portion of the polygonal shaft 340, the subclutch 341 is the second spring 360. It is moved downward while compressing the main clutch 311 and the engagement with the gear wheel is released at the moment. When the torsional tension retaining force of the second spring 360 twisted by the subclutch 341 is lost, the second spring 360 is formed on the upper end of the flange 331 coupled to the lower housing 320. The torsional tension of the second spring 360 is released while the reverse of the second clutch 360 with the subclutch 341 is fixed. As such, when the spring having a large diameter and a short length is used, the tension rises relatively, and the spring breaks well. However, as in the spring type buffer hinge 30 of the present invention, the diameter of the spring is relatively small and the overall length is increased. By using two elongated springs to have a larger modulus of elasticity, the elasticity is increased when the door 1 is opened and closed to help smooth opening and closing.

As described above, the torsional tension of the spring 140 in the inner circumference of the upper housing 110 to which the door hinge plate 130 formed with a plurality of fastening holes 131 are joined. Rotating movement of the cam 221 in the interior of the lower housing 210 is installed by the opening and closing device 100 for automatically returning the opening and closing of the door and coupled vertically connected to the lower one side of the upper housing 110. And a hydraulic shock absorbing hinge 10 having a shock absorber 200 for controlling the opening and closing speed of the door 1 by moving the piston 230 upward and downward to control the opening and closing speed of the door 1 by the flow of hydraulic pressure filled in the lower housing 210. And the upper housing 110 to be vertically connected to the lower side of the door 1 in which the hydraulic shock absorbing hinge 10 is installed. Combining the lower housing 210 and in the inner circumference of the spring (350,360) into a plurality of spring buffer hinge 30 to double the torsional tension of the spring to more elastically return the opening and closing of the door (1) It is easy to adjust the strength of the torsional tension of the spring that automatically opens and closes the door so that the door's opening and closing speed can be finely and easily adjusted.In addition, when the door is opened suddenly or rapidly, the door's opening and closing speed By suppressing the overload of the hydraulic pressure that may occur inside the hinge to maintain a constant buffering force to be able to open and close the door smoothly and naturally, it is possible to suppress the occurrence of safety accidents due to the opening and closing of the door of the elderly and children.

In addition, as the mechanical impulses on the hinges or the complexity of the configuration are excluded, the floating population is large and can be effectively applied to places with a large amount of opening and closing doors or heavy weight doors, thereby minimizing ghosting due to installation and maintenance. There is an effect that can be extended.

1 is a front view showing a door with a door hinge for opening and closing the present invention.

Figure 2 is an exploded perspective view showing a hydraulic buffer hinge of the door hinge for opening and closing the present invention. Figure 3 a, b, c is a view showing the hydraulic buffer hinge of the door hinge opening and closing of the present invention, a) is a sectional view showing a hydraulic buffer hinge when the door is opened, b) is a cross-sectional view showing the hydraulic buffer raceway when the door is closed, c) is a sectional view showing adjusting the opening speed of the door.

Figure 4 is an exploded perspective view showing a spring-type buffering hinge of the door opening and closing buffer hinge of the present invention.

5 a, b, c is a spring-type buffering hinge of the door opening and closing buffer hinge of the present invention, a) is a sectional view showing a spring-type cushioning hinge when the door is opened, b) is a cross-sectional view of the spring-type cushioning hinge when the door is closed, c) is a sectional view showing adjusting the opening and closing speed of the door.

Figure 6 a, b, c is a partially enlarged perspective view showing the hydraulic input means of the hydraulic buffer hinge of the present invention.

Explanation of symbols on the main parts of the drawings

1: Door 10: Hydraulic Shock Hinges

30: spring buffer hinge 100: opening and closing device

110: upper housing 111: main clutch

112: fixing block 112a: mounting groove

115: fixing pin 120: tension adjusting means

121: adjusting block 121a: wrench groove

121b: screw hole 122: sub clutch

123: support block 124: contact spring

125: support pin 130: door pivot plate

131: fastening hole 140: spring

200: shock absorber 210: lower housing

211: first cylinder 213: bypass passage

214: coupling hole 214a: flow control bolt

220: hydraulic input means 221: rotary cam

222: shaft 223: locking projection

224 concave portion 225 convex portion

226: guide protrusion 227: guide ball

228: oil sealing 230: piston

231: through hole 231a: fine passage

232: locking groove 232a: locking bolt

233: check valve 240: hydraulic shaft

241: hydraulic passage 250: tension spring

260: door fixing plate 300: spring buffer

310: upper housing 311: main clutch

313: fixed piece 314: door rotation plate

320: lower housing 321: door fixing plate

330: tension control means 331: flange

331a: wrench groove 331b: polygon hole

340 polygon shaft 341 sub clutch

341a: snap ring 350: first spring

360: second spring

Claims (10)

Opening and closing device 100 for automatically returning the opening and closing of the door by using the torsional tension of the spring 140 on the inner circumference of the upper housing 110 to which the door rotating plate 130 formed a plurality of fastening holes 131 are joined. ) And the lower housing 210 is moved up and down by the rotational movement of the cam 221 inside the lower housing 210 which is coupled to be vertically connected to the lower one side of the upper housing 110 by the lower housing 210. Hydraulic shock absorbing hinge 10 is installed with a shock absorber 200 for controlling the opening and closing speed of the door (1) by the flow of hydraulic pressure filled in the inside, The upper housing 110 and the lower housing 210 are coupled to the upper and lower sides of the door 1 in which the hydraulic shock absorbing hinge 10 is installed, and the springs 350 and 360 are introduced into the inner circumference of the plurality of springs. It is composed of a spring-buffered hinge 30 that doubles the torsional tension so that the opening and closing of the door 1 can be more flexibly returned, and is attached to each of the upper and lower sides of the door 1 to open and close the door smoothly. In the buffer hinge for The opening and closing device 100 is fixed to the fixing block 112 on the inner circumference of the position where the upper housing 110 and the lower housing 210 are in contact with each other by interlocking with the gear wheels on the upper inner circumference of the upper housing 110. The main clutch 111 and the sub-clutch 122 to prevent rotation is connected in conjunction, but the main clutch 111 is fixed to the upper housing 110 and the sub clutch 122 is installed on the top of the upper housing 110 To be fixed to the adjusting block 121 of the tension adjusting means 120 penetrating the main clutch 111, and between the sub clutch 122 and the fixing block 112, a spring 140 is embedded to allow the sub clutch 122 to be inserted therein. Fixing the upper and lower ends of the spring 140 formed on the lower end and the upper end of the fixed block 112, and then the hydraulic housing means 220 to rotate in conjunction with the upper housing 110 each time the door 1 is opened and closed the upper housing To the control block 121 of the tension adjusting means 120 through the inner peripheral lower portion of the (110) The door hinge is a buffer hinge for opening and closing. The method of claim 1, The hydraulic input unit 220 is formed in a cylindrical shape is coupled to the oil seal 228 on the outer periphery and the outer periphery cut in an oblique direction to the center of one side of the rotating cam 221 having a space inside the center of the cylindrical To form a shaft 222 integrally, but the outer hinge of the end of the shaft 222, the hinge hinge for door opening and closing, characterized in that formed by forming a plurality of engaging projections 223 of the gear. The method of claim 1, The rotary cam 221 of the hydraulic input means 220 is cut in a diagonal direction from the upper end to the center side thereof so as to form two concave portions 224 and convex portions 225 corresponding to the outer circumference thereof and closely adhere to them. While forming the upper end of the piston 230 to be the same as the cam diagram of the rotary cam 221 to form a groove at the vertex of the convex portion 225 to be caught by the convex portion 225 of the piston 230 every time The closing hinge of the door opening and closing, characterized in that the hydraulic input means 220 is configured to rotate while stopping the door (1) when opening and closing the door (1). The method of claim 1, The hydraulic input means 220 protrudes the guide protrusion 226 on the outer periphery of the rotary cam 221 and the piston 230 forms a spiral guide hole 227 on the outer periphery so as to communicate with the inner space to one side. By inserting the rotary cam 221 into the internal space of the piston 230, the guide protrusion 226 is guided by the guide hole 227, characterized in that the hydraulic input means 220 is configured to rotate only 90 ° Door closing hinge for door opening and closing. The method of claim 1, The hydraulic input unit 220 forms a guide protrusion 226 on the outer periphery of the rotary cam 221 by a predetermined length in a spiral shape, and has a guide hole 227 having the same linear shape in the center of the piston 230. Door opening and closing, characterized in that the guide projection 226 is formed to communicate with the guide projection 226 is guided by the guide hole 227 and the hydraulic input means 220 can be rotated by 90 ° stops by 180 ° rotation Cushioning hinge. The method of claim 1, The tension adjusting means 120 forms a wrench groove 121a in the flange-shaped adjusting block 121 and forms a hole of a predetermined depth into the lower center of the hydraulic input to partially protrude to the upper portion of the upper housing 110. Coupling portion formed with the engaging projection 223 at the end of the shaft 222 of the means 220, and on the outer circumferential side of the control block 121 and a hole formed in the center of the control block 121 and the screw hole (121b) The support block 123 is coupled to the outer periphery by the screw hole 121b is formed, but the support block 123 has a support pin 125 that protrudes or is embedded in the outside by the contact spring 124 elastically. One end of the support pin 125 is configured to elastically hang on the locking projection 223 of the hydraulic input means 220, the door hinge for opening and closing. delete delete delete delete