KR100762785B1 - Oil pressure door hinge - Google Patents

Abstract

The present invention relates to a hydraulic door hinge, comprising: a first cylinder having a hollow portion inside and having a first bracket formed on an outer circumferential surface thereof; and a second bracket formed on an outer circumferential surface having a hollow portion formed therein and rotatably coupled to the first cylinder. An outer cylinder portion formed of the second cylinder; An inner cylinder inserted into the second cylinder and connected to the first cylinder, and an inner cylinder inserted into the outer cylinder and connected to the second cylinder, interlocked with rotation of the first and second cylinders. A cylinder unit configured to rotate the outer cylinder and the inner cylinder in opposite directions; A guide member which is moved back and forth in conjunction with forward and reverse rotation of the outer cylinder and the inner cylinder; A piston inserted into the inner cylinder and moved forward and backward in association with the operation of the guide member, the piston having an opening and closing member for controlling the flow of the operating oil; An inner cylinder in which a blocking plate having a flow path formed therein is formed at one end thereof, and a chamber for storing operating oil therein is formed, the inner cylinder being inserted into the first cylinder to be coupled to the outer cylinder; And a tension control device installed on the blocking plate to control the opening and closing of the flow path to adjust the tension.

Through the configuration as described above, by connecting the door and the door frame can be combined with the function of the hinge function and the door closer, it is possible to significantly reduce the installation cost and labor.

 Door, hinge, pneumatic, rotary, piston, cylinder, elastic

Description

Hydraulic Door Hinges {OIL PRESSURE DOOR HINGE}

1 is an exploded perspective view of a hydraulic door hinge according to the present invention.

2 is an exploded perspective view of FIG. 1.

3 and 4 are combined cross-sectional perspective view of FIG.

5A to 5D are plan views showing examples of the operation of the hydraulic door hinge according to the present invention when the door is opened.

6A to 6D are plan views showing examples of the operation of the hydraulic door hinge according to the present invention when the door is closed.

7 is an exploded perspective view of another embodiment of a hydraulic door hinge according to the present invention.

8 is a combined cross-sectional perspective view of FIG. 7.

9A to 9E are plan views showing examples of the operation of the hydraulic door hinge according to the present invention from the time of opening the door to the closing.

Explanation of symbols on the main parts of the drawings

8: tension control device 10: first cylinder

11: 1st bracket 20: 2nd cylinder

21: second bracket 30: the outer cylinder

31: first guide groove 40: internal cylinder

42: second guide groove 50: piston

52: perforated plate 53: long hole

54: hole 60: inner cylinder

82: adjusting pin 84: adjusting bolt

612: fastening hole 614: fluid transfer hole

822: Spigot

The present invention relates to a hydraulic door hinge, and more particularly to a hydraulic door hinge that is installed in the door to be able to play the role of the door closer and the stopper.

Doors of general buildings, houses, general furniture, kitchen furniture, and home appliances are connected to the door frame, and hinges are installed to induce rotational motion.

The hinge is a general shape that is formed by engaging the shaft pins in the plurality of fitting holes formed in each bracket after the two brackets having the same shape and fitting holes on one side.

On the other hand, the other side of the door is provided with a door closer that induces to close slowly when the door is opened.

Conventional door closers have a built-in driving piston that receives the pressure of the return spring in the hydraulic cylinder inside the closure, and connects the gears of the piston shaft and the cam gear of the rotating shaft, and the hydraulic chambers before and after the piston are different from the hydraulic passage having the check valve. It was configured to be connected as a passage.

In the conventional door closer, when the door is opened, the rotational motion of the rotational shaft is transmitted to the gear of the piston shaft through the cam gear and converted into the forward motion of the piston. At this time, the forward motion of the piston compresses the return spring to close the door. When the door is closed, the compression force of the return spring causes the driving piston to reverse, and the cam gear and the rotating shaft coupled with the gears of the piston shaft are reversed to close the door.

In addition, when the piston moves forward, the hydraulic pressure opens the check valve so that the oil in the piston front hydraulic chamber can be easily transferred to the hydraulic chamber behind the piston, and when the piston moves backward, the check valve is closed to open the rear hydraulic chamber through another control passage. The oil is operated to be limitedly transferred to the front hydraulic chamber to reduce the speed of the closing operation, and when the reciprocating movement of the driving piston allows the piston to open and close the control passage, thereby controlling the closing operation.

However, the hydraulic door closer described above is not durable when it is used for a long time and the oil inside leaks through the gap and flows down to the door. There was a problem that prevented.

In addition, the conventional door has to be installed both the hinge and the door closer, the labor cost for installing it also increases the problem that the cost increases.

The present invention, in order to solve the above problems of the prior art, by connecting the door and the door frame to the hinge function, so that the door can be closed slowly in accordance with the transfer of the internal operating oil when opening and closing the door to also parallel the function of the door closer It is intended to provide a hydraulic door hinge for this purpose.

Hydraulic door hinge (A) of the present invention to achieve the above object,

An outer cylinder portion comprising a first cylinder having a hollow portion at an inner side thereof, the first cylinder having a first bracket formed thereon, and a second bracket having a hollow portion at an inner side thereof having a hollow portion, the second cylinder being rotatably coupled to the first cylinder; An inner cylinder inserted into the second cylinder and connected to the first cylinder, and an inner cylinder inserted into the outer cylinder and connected to the second cylinder, interlocked with rotation of the first and second cylinders. A cylinder unit configured to rotate the outer cylinder and the inner cylinder in opposite directions; A guide member which is moved back and forth in conjunction with forward and reverse rotation of the outer cylinder and the inner cylinder; A piston inserted into the inner cylinder and moved forward and backward in association with the operation of the guide member, the piston having an opening and closing member for controlling the flow of the operating oil; An inner cylinder having a blocking plate having a flow path formed therein and having a chamber for storing working oil therein, the inner cylinder being inserted into the first cylinder and coupled to the outer cylinder; And a tension control device installed on the blocking plate to control the opening and closing of the flow path to adjust the tension.

At least one guide groove is formed to intersect the first cylinder and the second cylinder of the cylinder portion.

In addition, the hydraulic door hinge (A ') according to another embodiment of the present invention,

A first cylinder having a hollow portion on the inner side and a first cylinder having a first bracket formed thereon, and a chamber for storing operating oil therein, and a second bracket formed on the outer circumferential surface rotatably coupled to the first cylinder. Configured outer cylinder portion;

A cylinder portion including an outer cylinder coupled to the inner side of the first cylinder, and an inner cylinder inserted into the outer cylinder and having a flow path through which operating oil is transferred;

A piston which is coupled between the outer cylinder and the inner cylinder and installed inside the chamber of the second cylinder and pressurizes and moves the operation oil by moving forward and backward in conjunction with the forward and reverse rotations of the outer cylinder and the inner cylinder;

A tension adjusting device inserted into the inner cylinder to control a transfer of the operating oil;

Characterized in that comprises a.

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

1 is an exploded perspective view of the hydraulic door hinge (A) according to the present invention, Figure 2 is an exploded perspective view of the Figure 1, Figures 3 and 4 is a combined cross-sectional perspective view of the Figure 1.

Referring to this, the first cylinder 10 has a hollow cylindrical shape formed inside and both ends are opened, a plurality of fastening holes 110 is inserted into the bolt to be fixed to the door or the door frame on one side of the outer peripheral surface The provided first bracket 11 is formed integrally.

Here, the first cylinder 10, the portion corresponding to 1/2 of the total length of the outer peripheral surface of the fitting portion 13 by forming the fitting portion 13 and the round projection 12 by making the outer diameter smaller than the remaining portion, the fitting portion 13 The second cylinder 20 to be described later can be fitted into the combination.

The annular center 12 has an annular center ring 14 interposed therebetween so that the first cylinder 10 and the second cylinder 20 are coupled to each other so as not to be directly rubbed during rotation operation.

At the end opposite to the fitting portion 13 of the first cylinder 10 described above, a plurality of bolt fastening holes (not shown) may be provided to allow the inner cylinder 60 to be described later to be coupled by fastening the bolt 200. Is formed.

The second cylinder 20 has a hollow inside and both ends thereof are opened, and a second bracket 21 is formed on the outer circumferential surface and fixed to the door or the door frame, and the fitting portion 13 of the first cylinder 10 is formed. Cylindrical shape that is fitted to and coupled to.

The second bracket 21 is formed in the same shape as the first bracket 11 of the first cylinder 10 described above.

An opening is formed at one end of the second cylinder 20, that is, the side facing the opening fitted with the first cylinder 10 described above, so that the outer cylinder 30 to be described later is inserted, and fixed at both sides thereof. The coupling hole 22 to which the bolt 35 may be fastened is formed.

An outer cylinder 30 is inserted into the second cylinder 20. The outer cylinder 30 has an open end, and the other end has a cylindrical shape blocked by the blocking plate 32. In the outer circumferential surface adjacent to the) is formed a screw portion 33 is coupled to the threaded portion 15 of the first cylinder 10 is fixed to the inside of the first cylinder 10 by screwing, the outer cylinder ( 30, a plurality of first guide grooves 31 are formed obliquely in an oblique direction, and the first guide grooves 31 are formed to correspond to each other in a substantially 'X' shape, and have a curved shape. Is formed.

In addition, a hole 320 is formed in the center of the blocking plate 32, and the center bolt 34 penetrates through the hole 320, and an end of the center bolt 34 is inserted later. It is screwed into the inner cylinder 40 to be.

The inner cylinder 40 is inserted into the inner cylinder 30, the inner cylinder 40 is open at one end, the other end is blocked cylindrical, the above-described center bolt 34 is blocked A coupling portion 44 formed with a spiral is formed on the inner circumferential surface to be coupled, and the outer side is formed in the same shape as that of the first guide groove 31 of the outer cylinder 30, that is, in an oblique and curved shape. A second guide groove 42 is formed in a direction opposite to the first guide groove 31 so as to correspond to each other in an 'X' shape.

The piston 50 is inserted into the inner cylinder 40, the piston 50 has a hollow portion on the inside, the long hole 53 is formed on the outer peripheral surface, the hole 54 on one side of the long hole 53 The long hole 53 and the hole 54 are formed so as to face each other as shown in FIG. 2.

And, one end of the piston 50, that is, the end of the side opposite to the long hole 53 is formed an opening and closing member for controlling the transfer of the operating oil is installed, the opening and closing member is an inner cylinder (to be described later) 60 and a flow path of the circular step portion 51 in which the flow path 511 is formed inside, the flow path 510 formed inside the piston 50 and the circular step portion 51, and the flow path of the circular step portion 51. It consists of a porous plate 52 having an opening and closing port 55 is inserted into the 511, and the flow path hole 520 is provided on the outside of the circular jaw portion 51 and opened and closed by the opening and closing port (55).

Here, the opening and closing port 55 is formed of a sphere, the flow path 511 into which the opening and closing port 55 is inserted is formed in a conical shape in which the diameter becomes narrower toward the inside of the piston 50, thereby the piston 50 ) Is introduced into the inner cylinder 60, the opening and closing port 55 is moved to the rear by the flow of the operating oil to close the flow path 511 (see Fig. 6b), when the piston 50 retracts the operating oil By the flow of the opening and closing port 55 is moved forward to open the flow path 511 (see Fig. 5b).

On the other hand, the piston 50 is provided with a guide member which is operated back and forth in conjunction with the rotation of the outer and inner cylinders 30 and 40 described above.

As shown in FIG. 1, the guide member has a protrusion 710 formed by bending a rod into a substantially "-C" shape, and bending both ends thereof outward to form a long hole of the piston 50. The finger member 71 inserted into the 53, the shaft pin 73 inserted into the hole 54 of the piston 50, and the one end inserted into the piston 50 are supported by the finger member 71. And the other end includes a spring 72 installed to be supported by the shaft pin 73, and first and second guide blocks 731 and 732 coupled to both ends of the shaft pin 73.

Here, the protrusion 710 protruding to the outside through the long hole 53 may be elastically supported by the first and second guide blocks 731 and 732 by the elastic force of the finger member 71.

Here, the first and second guide blocks 731 and 732 are grooves 730 formed at one side thereof to support the protrusions 710 of the finger member 71, as shown in FIGS. 3 and 4. The guide block 731 is inserted into the first guide groove 31 of the outer cylinder 30, and the second guide block 732 is inserted into the second guide groove 42 of the inner cylinder 40.

Therefore, as shown in FIG. 3, the protrusion 710 of the finger member 71 is provided with an elastic force in the direction in which the first and second guide blocks 731 and 732 are pushed by the spring 72. By this elastic force, the first and second guide blocks 731 and 732 can always be in contact with one side surfaces of the first and second guide grooves 31 and 42.

The inner cylinder 60 inserted through an end opposite to the fitting portion 13 of the first cylinder 10 has a chamber in which working oil is filled, as shown in FIGS. 1 and 2, and one side thereof. Is opened and the other side is a cylindrical body formed with a blocking plate 61, the outer diameter is smaller than the inner diameter of the first cylinder 10 so that the gap 100 is formed on the side when inserted into the first cylinder 10 As a result, the operating oil may be transferred through the gap 100.

One side of the blocking plate 61 is a fluid transfer hole 614 is formed in communication with the hollow inside, a fluid passage 610 is formed in communication with the fluid transfer hole 614, the end of the passage 610 is an inner cylinder ( A through hole 62 which is directed to the outside of 60 is formed (see FIG. 1).

A central portion of the blocking plate 61 communicates with the above-described flow path 610, and a fastening hole 612 is formed to which the tension adjusting device 8 to be described below is coupled, and the blocking plate 6 is the first block described above. It is fixed to the end of the cylinder 10 with the bolt 200.

The fluid transfer hole 614 and the fastening hole 612 provided in the blocking plate 61 of the inner cylinder 60 are provided with a tension adjusting device 8 so as to reduce or widen the cross-sectional area of the flow path 610. By controlling the flow rate of the door can be controlled the opening and closing speed of the door.

As shown in FIG. 3, the tension adjusting device 8 includes an adjusting pin 82 coupled to the fluid transfer hole 614 of the blocking plate 61 and a fastening hole 612 of the blocking plate 61. It consists of a control bolt 84 coupled to.

The control pin 82 has a handle 824 is formed at one end to be exposed to the outside, and the other end located inside the stopper 822 is formed by the stopper 822 with the O-ring 823 is interposed with the stopper 822 and By adjusting the gap with the fluid transfer hole 614 it is possible to adjust the flow rate of the working oil.

The adjustment bolt 84 is screwed into the fastening hole 612 of the aforementioned blocking plate 61, the inner end is installed to flow into the flow path 610, the outer end of the annular handle 840 is installed By forming the narrowing or widening the cross-sectional area of the flow path 610 by the operation of tightening or loosening the adjustment bolt 84 can control the flow rate of the operating oil.

Referring to the coupling relationship of the present invention (A) configured as described above is as follows.

First, the inner cylinder 40 is inserted into the outer cylinder 30, and the piston 50 having the aforementioned guide member is inserted into the inner cylinder 40.

At this time, the first guide block 731 is inserted into the first guide groove 31 of the outer cylinder 30, the second guide block 732 is the second guide groove 42 of the inner cylinder (40) Insert into and join.

In this case, the process of engaging the above-mentioned opening and closing port 55 in the annular part 51 of the piston 50 and coupling the porous plate 52 is a matter of course.

The external cylinder 30 is coupled to the second cylinder 20 and then inserted into the second cylinder 20 by tightening the fixing bolt 35 so that the second cylinder 20 and the inner cylinder 40 can be interlocked with each other. After passing through the center bolt 34 through the blocking plate 32 of the cylinder 30, the end is screwed to the coupling portion 44 of the inner cylinder (40).

Thereafter, the second cylinder 20 is fitted into the fitting portion 13 of the first cylinder 10, and the inner cylinder 60 is inserted through the opening of the other end opposite to the fitting portion 13. After tightening the bolt to fix.

Here, the above-described adjustment pin 82 is fitted into the fluid transfer hole 614 formed in the blocking plate 61 of the inner cylinder 60, and the adjustment bolt (61) in the fastening hole 612 of the blocking plate 61. 84) to complete the installation of the tension adjusting device (8).

At this time, prior to installing the tension control device 8, the operation of injecting the operating oil through the fastening hole 612 to fill the inside of the inner cylinder 60 should be preceded.

Referring to the operation relationship of the present invention (A) the coupling is completed as follows.

5A to 5D are plan views illustrating examples of the operation of the hydraulic door hinge A according to the present invention when the door is opened.

First, when the door starts to be opened in the closed state (see FIG. 5A), the second cylinder 20 is rotated, and the inner cylinder 40 is rotated in association with the door. Accordingly, the first and second guide blocks ( 731 and 732 move downward along the first and second guide grooves 31 and 42 (see FIG. 5B).

Therefore, as the piston 50 coupled to the first and second guide blocks 731 and 732 moves downward, the operating oil is separated from the gap 100 between the inner cylinder 60 and the first cylinder 10 and the piston ( It starts to flow into the inner cylinder 60 through the flow path in 50) (refer FIG. 5B and FIG. 5C).

At this time, since the opening and closing port 55 of the piston 50 moves upward, the flow path 511 is opened, so that the operating oil passes through the flow path hole 520 of the porous plate 52 and moves upward toward the inner cylinder 60. .

When the opening of the door is completed by rotating the second cylinder 20, the working oil is accumulated in the upper side of the inner cylinder 60 (see Fig. 5d).

Meanwhile, when the stopper 822 blocks the fluid transfer hole 614 by pulling the control pin 82 while the door is opened, the door is fixed by stopping the movement of the operating oil introduced into the inner cylinder 60. It becomes the stopper function.

Next, FIGS. 6A to 6D are plan views showing examples of the operation of the hydraulic door hinge A according to the present invention when the door is closed.

When the door starts to be closed when the door is completely open (see FIG. 6A) (the closing force of the door is performed by the user or by the closing force of a spring device not shown), the second cylinder 20 Rotating in the reverse direction, the first and second guide blocks 731 and 732 move upwards, and are driven to start the piston 50 rising (see FIG. 6B).

As the piston 50 rises, the opening and closing port 55 is in a state of closing the flow path 511, and the operating oil is moved through the fluid transfer hole 614 of the inner cylinder 60, and the moved operating oil is blocked. It moves to the inner cylinder 40 and the outer cylinder 30 via the clearance 100 between the inner cylinder 60 and the 1st cylinder 10 through the flow path 610 of the board 61 (FIG. 6B). And FIG. 6C).

When the door is completely closed, the rotation of the second cylinder 20 is terminated, and the working oil is accumulated at the lower side of the inner cylinder 60 (see FIG. 6D).

Hereinafter, a hydraulic door hinge A 'according to another embodiment of the present invention will be described.

7 is an exploded perspective view of the hydraulic door hinge A 'of another embodiment according to the present invention, and FIG. 8 is a combined cross-sectional perspective view of FIG.

The first cylinder 10 'constituting the outer cylinder portion is a cylindrical shape having a hollow formed inside and open at both ends thereof, and a plurality of fastening holes into which bolts are inserted to be fixed to a door or a door frame at one side of the outer circumferential surface thereof. The first bracket 11 'provided with 110' is formed integrally.

Here, the first cylinder (10 ') of the outer circumferential surface of the portion corresponding to half of the total length is smaller than the rest of the outer portion to form the fitting portion 13' and the round projection (16 '), thereby the fitting The second cylinder 20 ', which will be described later, may be inserted into and coupled to the portion 13'.

The annular center 16 'is provided with an annular center ring 14' to prevent the first cylinder 10 'and the second cylinder 20' from being directly rubbed when the rotary operation is coupled.

Inside the fitting portion 13 ′ of the first cylinder 10 ′ described above, a screw portion 12 ′ is formed to be screwed into the block 23 ′ of the second cylinder 20 ′, which will be described later.

The second cylinder 20 'is provided with a hollow chamber 202' therein, one side of which is opened and the other side of which is blocked by a blocking plate 24 ', and a hole in the center of the blocking plate 24'. 240 'is formed, and a second bracket 21' is formed on an outer circumferential surface thereof, and a cylindrical shape is inserted into and coupled to the fitting portion 13 'of the first cylinder 10'.

The second bracket 21 'is formed in the same shape as the first bracket 11' of the first cylinder 10 'described above.

The central bolt 34 'is inserted through the hole 240' of the second cylinder 20 ', and a plurality of fixings are provided on the side of the blocking plate 24' to fix the inserted central bolt 34 '. The bolt 22 'is fastened.

The outer cylinder 30 'is inserted into and coupled to the inside of the first cylinder 10', one end of which is opened, and the other end of the blocking plate 32 'is formed, and the blocking plate 32' A through hole 321 'is formed at the center to penetrate the working rod 85' of the tension adjusting device 8 ', which will be described later, and bolts formed at the end of the first cylinder 10' to the outside thereof. A plurality of bolted holes 322 'corresponding to the ball 15' are formed.

In addition, a plurality of first guide grooves 31 'are formed on the outer surface of the outer cylinder 30' in an oblique direction in an oblique direction, and the plurality of opposed first guide grooves 31 'is approximately' X 'shaped. It is formed to correspond to the staggered shape, and is formed in a curved shape.

In addition, the diameter of the blocking plate 32 'is formed to be larger than the outer surface of the outer cylinder 30' so as to be stepped, and the fixing pin 33 'is inserted into the position close to the blocking plate 32'. A plurality of holes 302 'are formed to face each other.

An inner cylinder 40 'is inserted into the outer cylinder 30', and the inner cylinder 40 'has the same shape as that of the first guide groove 31' of the outer cylinder 30 '. The second guide groove 42 'is formed in an oblique and curved shape in an oblique direction, and is formed in a direction opposite to the first guide groove 31' and is formed to be staggered in an 'X' shape. An outer cylinder 43 'having an opening 434' formed at one end thereof, and having an annular guide groove 432 'formed at an outer circumferential surface adjacent to the opening 434'; The flow passage 442 'is integrally formed inside the outer cylinder 43', and one end thereof communicates with the opening hole 434 'and the other end communicates with the side hole 444'. An inner cylinder 44 'formed with a hole 440' corresponding to the hole 302 'of the outer cylinder 30' at a position proximate to the opening hole 434 ', wherein the inner cylinder 44' And a gap 45 'is formed between the outer cylinder 43' and the piston 50 'to be described later.

Here, the fixing pin 33 'while the outer cylinder 30' and the inner cylinder 40 'are rotated by inserting the fixing pin 33' of the outer cylinder 30 'into the guide groove 432'. By rotating the guide groove 432 'to keep the outer cylinder 30' and the inner cylinder 40 'is not separated from each other to maintain a coupled state.

In addition, the operating oil is transferred through the flow path 442 ', and an expansion pipe portion 443' is formed at one side of the flow path 442 'to have an enlarged diameter toward the opening hole 434'. 443 'is inserted with a guide body 82' of the tension adjusting device 8 'to be described later.

The inner cylinder 44 'is formed longer than the outer cylinder 43', and a screw groove 446 'is formed at an end opposite to the opening hole 434' so that the above-described center bolt 34 'can be fastened. On the outer circumferential surface, a plurality of O-rings 445 'are interposed for sealing.

A piston 50 'is fluidly fitted to an outer side of the inner cylinder 44' of the inner cylinder 40 ', and the piston 50' has a hollow portion on the inner side and a second cylinder on one end portion of the outer cylinder 44 '. A round jaw 52 'is formed to be inscribed at the 20', and the other side is inserted into the first and second guide grooves 31 'and 42' of the inner and outer cylinders 40 'and 30' described above. A plurality of rollers 55 'are provided to face each other.

The ring 52 'is provided with a plurality of O-rings 53' to be hermetically contacted with the inner circumferential surface of the second cylinder 20 '.

Therefore, when the outer and inner cylinders 30 'and 40' rotate, the piston 50 'moves forward and backward by riding the first and second guide grooves 31' and 42 '. ) Also acts forward and backward to compress the working oil filled in the chamber 202 'of the second cylinder 20'.

The tension adjusting device (8 ') is inserted into the flow path (442') of the above-described inner cylinder (40 ') to control the transfer of the operating oil by operating back and forth, the conical shape is inserted into the expansion section (443') Guide body 82 'on the top; A support tube 83 'for supporting the guide body 82'; A spring 823 'interposed between the guide body 82' and the support tube 83 '; An operating rod 85 'having a rod 853' penetrated in the guide body 82 'and an opening and closing hole 852' inserted into the guide body 82 '; A blocking block 84 'inserted into the support tube 83' and coupled to the operating rod 85 '; And a handle 87 'coupled to an end of the operating rod 85'.

The guide body 82 'is formed in a conical shape so as to correspond to the expansion portion 443' of the flow path 442 ', and a conveying passage 822' is formed at an inner side thereof, and a diameter of the conveying passage 822 'is formed. An enlarged expansion portion 821 'is formed.

The support tube 83 'is a cylindrical body having a hollow inside, and a plurality of supports 832' are formed at one end thereof in contact with the guide body 82 'with a gap 834'.

The spring 823 ′ is interposed outside the support 832 ′ of the support tube 83 ′ and is provided between the guide body 82 ′ and the support tube 83 ′ to provide an elastic force.

The rod 85 'has a rod 853' having a predetermined length passing through the transfer passage 822 'of the guide body 82' at one end thereof, and on one side of the outer peripheral surface of the transfer passage 822 '. Conical opening and closing holes 852 'are formed to correspond to the expansion tube 821', and one side of the thread portion 851 'is formed to be screwed with the blocking block 84'.

The blocking block 84 'is a cylindrical body inserted into the support pipe 83' with a plurality of O-rings 842 'interposed on an outer circumferential surface thereof, and is screwed to the thread portion 851' of the operating rod 85 '. do.

Accordingly, when the O-ring 842 'of the blocking block 84' is positioned on the inner circumferential surface of the support 832 'of the support tube 83' according to the movement of the operating rod 85 ', the support 832' Since the gap between the 834 834 'is blocked, the transfer of the operating oil is blocked.

The working rod 85 'is exposed to the outside through a through hole 321' formed at the blocking plate 32 'of the outer cylinder 30', and the handle 87 'at the exposed end thereof. Can be combined to enable the operation from the outside.

Referring to the coupling relationship of another embodiment (A ') of the present invention configured as described above is as follows.

The guide body 82 'is inserted into the expansion pipe 443' of the inner cylinder 40 ', the spring 823' and the support tube 83 'are inserted, and the blocking block 84' is coupled. Insert the working rod 85 'and then insert it into the first cylinder 10' and then insert the outer cylinder 30 'into the first cylinder 10' to fasten and fix the bolts, 33 ') into the holes 440', 302 '.

In addition, the piston 50 'is fitted to the outside of the inner cylinder 44' of the inner cylinder 40 ', and the roller 55' is coupled to the first and second guide grooves 31 'and 42'. .

Thereafter, the inner cylinder 40 'is inserted into the second cylinder 20', and the center bolt 34 'is fastened and fixed, and the second cylinder 20' is fitted into the first cylinder 10 '. After fitting into the part 13 ', the first cylinder 10' is rotated to be screwed with the block 23 'to complete the joining.

Then, the handle 87 'is coupled to the end of the operating rod 85'.

The operating relationship of another embodiment A ′ of the present invention configured as described above will be described with reference to FIGS. 9A to 9E.

9A to 9E are plan views showing examples of the operation of the hydraulic door hinge A 'according to the present invention from the time of opening the door to the closing.

When the door is first opened in the closed state (FIG. 9A), since the second bracket 21 ′ rotates, the second cylinder 20 ′ and the inner cylinder 40 ′ rotate in response to the second bracket 21 ′. Since the roller 55 'coupled to the guide groove 42' moves, the piston 50 'is raised.

Since the working oil in the chamber 202 'is compressed as the piston 50' rises, the working oil flows into the flow path 442 'of the inner cylinder 40' and thus the guide body 82 ' After passing through the hole 440 'of the inner cylinder 40' by passing through the transfer passage 822 ', it is accumulated in the gap 45' between the inner cylinder 40 'and the outer cylinder 30' (Fig. 9b and 9c).

At this time, when the user grasps the handle 87 'of the tension adjusting device 8' and pushes it in, the operating rod 85 'moves forward and the opening and closing port 852' moves through the guide passage 82'82 '. ') And the blocking block 84' blocks the gap 834 'between the supports 83' of the support pipe 83 ', so that the operating oil is not transferred and the second bracket ( 21 ') stops rotating, so the door's rotation can be stopped, thus acting as a stopper.

Therefore, since the feed amount of the operating oil can be controlled according to the operation of pushing or removing the operating rod 85 ', the opening and closing speed of the door can be adjusted.

That is, when the operation rod 85 'is removed and the operation oil is smoothly transported, the opening and closing speed of the door is increased, and when the operation rod 85' is pushed in and the operation oil is restricted, the opening and closing speed of the door is slowed.

Meanwhile, FIGS. 9D and 9E illustrate an operation example when the door is closed, and are performed in the reverse order to the above-described opening operation, and a detailed description thereof will be omitted.

As described above, according to the door hinge of the present invention, the door and the door frame can be connected to the hinge function, and the function of the door closer can also be parallel, significantly reducing the installation cost and labor, and durability This increasing effect can be provided.

Claims (17)

An outer cylinder portion comprising a first cylinder having a hollow portion at an inner side thereof, the first cylinder having a first bracket formed thereon, and a second bracket having a hollow portion at an inner side thereof having a hollow portion, the second cylinder being rotatably coupled to the first cylinder; An inner cylinder inserted into the second cylinder and connected to the first cylinder, and an inner cylinder inserted into the outer cylinder and connected to the second cylinder, interlocked with rotation of the first and second cylinders. A cylinder unit configured to rotate the outer cylinder and the inner cylinder in opposite directions; A guide member which is moved back and forth in conjunction with forward and reverse rotation of the outer cylinder and the inner cylinder; A piston inserted into the inner cylinder and moved forward and backward in association with the operation of the guide member, the piston having an opening and closing member for controlling the flow of the operating oil; An inner cylinder in which a blocking plate having a flow path formed therein is formed at one end thereof, and a chamber for storing operating oil therein is formed, the inner cylinder being inserted into the first cylinder to be coupled to the outer cylinder; A tension control device installed on the blocking plate to control the opening and closing of the flow path to adjust the tension; Hydraulic door hinge, characterized in that consisting of. The method of claim 1, The first cylinder, A hollow is formed in the inner side and a cylindrical shape having both ends opened, and a portion corresponding to 1/2 of the total length on the outer circumferential surface has a smaller outer diameter than the remaining portion to form a fitting portion to which the second cylinder is coupled, and the inner circumferential surface of the fitting portion It is formed with a screw portion is coupled to the outer cylinder, the hydraulic door hinge, characterized in that the end portion facing the fitting portion is formed with a plurality of bolt fastening holes for coupling the inner cylinder. The method of claim 1, The second cylinder, A hollow is formed in the inner side and a cylindrical shape having both ends opened, an opening in which an outer cylinder is inserted is formed at a side opposite to the opening fitted with the first cylinder, and fixing bolts are fastened to both sides. Hydraulic door hinges. The method of claim 1, The outer cylinder, One end is open, the other end is cylindrical that is blocked by the blocking plate, the outer peripheral surface adjacent to the blocking plate is formed with a screw portion to be coupled to the first cylinder, the outer cylinder is oblique in one diagonal direction The first guide groove is formed above, the hydraulic door hinge, characterized in that the hole formed in the center of the blocking plate so that the center bolt penetrates. The method of claim 4, wherein The first guide groove of the outer cylinder is formed to correspond to cross, the hydraulic door hinge, characterized in that formed in a curved shape. The method of claim 1, The inner cylinder is open at one end, and the other end is closed cylindrical shape, the coupling side is formed with a spiral formed on the inner circumferential surface so that the center bolt is coupled to the blocked side, one or more second guide grooves obliquely in an oblique direction to the outside Hydraulic door hinges, characterized in that formed. The method of claim 6, The second guide groove of the inner cylinder is formed to correspond to cross, the hydraulic door hinge, characterized in that formed in a curved shape. The method of claim 1, The piston, It has a hollow portion on the inside, a plurality of long holes are formed on the outer circumferential surface, a plurality of holes are formed on one side of the long hole to face, An opening and closing member for controlling the transfer of the operating oil is installed at the end of the side opposite to the long hole is formed, The opening / closing member is inscribed in the inner cylinder and has an annulus portion having a flow path formed therein, a conical passage formed in the piston and the annular portion, the diameter of which is narrowed toward the inside of the piston, and a passage of the annular portion. A hydraulic door hinge, comprising: a perforated plate having a spherical opening and closing hole inserted into the spout; The method of claim 8, The guide member, A bar member formed by bending the bar into a “c” shape, and having protrusions formed by bending both ends to the outside thereof and inserted into the long hole of the piston; A shaft pin inserted into the hole of the piston; A spring inserted into the piston to support one end of the support member and the other end of the piston pin; Hydraulic door hinges, characterized in that consisting of; first and second guide blocks coupled to both ends of the shaft pin. The method of claim 9, The first guide block is inserted into a first guide groove formed obliquely in an oblique direction to the outside of the outer cylinder, and the second guide block is inserted into a second guide groove formed obliquely to the outside of the inner cylinder. Hydraulic door hinges, characterized in that. The method of claim 1, The inner cylinder is, The outer diameter is smaller than the inner diameter of the first cylinder so that a gap is formed when inserted into the first cylinder, so that the operating oil can be transferred through the gap, One side of the blocking plate is formed with a fluid transfer hole in communication with the hollow inside, a flow passage communicating with the fluid transfer hole is formed, the end of the flow passage is formed through the opening to the outside of the inner cylinder, The other side of the blocking plate is in communication with the flow path, the hydraulic door hinge, characterized in that the fastening hole is coupled to the tension adjusting device is formed in the center. The method of claim 11, The tension control device, It consists of a control pin coupled to the fluid transfer hole of the blocking plate, the adjusting bolt is coupled to the fastening hole of the blocking plate, The control pin is a handle is formed at one end is exposed to the outside, the other end is located inside is formed with a stopper with an O-ring interposed, The adjustment bolt is screwed into the fastening hole of the blocking plate, the end is introduced into the flow path, the hydraulic door hinge, characterized in that the outer end is formed with an annular handle. A first cylinder having a hollow portion on the inner side and a first cylinder having a first bracket formed thereon, and a chamber for storing operating oil therein, and a second bracket formed on the outer circumferential surface rotatably coupled to the first cylinder. A configured outer cylinder portion; A cylinder portion comprising an outer cylinder coupled to the inner side of the first cylinder, an inner cylinder inserted into the outer cylinder and having a flow path through which an operating oil is transferred; A piston which is coupled between the outer cylinder and the inner cylinder and installed inside the chamber of the second cylinder and pressurizes and moves the working oil by moving forward and backward in association with the forward and reverse rotations of the outer cylinder and the inner cylinder; A tension adjusting device inserted into the inner cylinder to control a transfer of the operating oil; Hydraulic door hinge, characterized in that consisting of. The method of claim 13, The outer cylinder, One end is open, the other end is formed of the blocking plate, the center of the blocking plate is formed with a through hole to which the tension control device is coupled, the outside of the plurality of bolted fastening holes are formed, At least one first guide groove is formed obliquely in an oblique direction, The blocking plate has a larger diameter than the outer cylinder, the hydraulic door hinge, characterized in that formed in the position adjacent to the blocking plate is formed a plurality of holes facing the fixing pin is inserted. The method of claim 14, The inner cylinder, An outer cylinder having one or more second guide grooves formed obliquely in an oblique direction on an outer side thereof, an opening hole formed at one end thereof, and an annular guide groove formed at an outer periphery thereof; The inner cylinder is formed integrally with the inner cylinder, one end is in communication with the opening hole and the other end is in communication with the through hole of the side surface, and the inner cylinder is formed at a position close to the opening hole, the hole corresponding to the hole of the outer cylinder. Consisting of; A gap is formed between the inner cylinder and the outer cylinder so that the piston can be inserted therein, One side of the flow path is formed with an expansion pipe portion is widened toward the opening hole, The inner cylinder is formed longer than the outer cylinder, the end of the opposite side of the opening hole is formed with a screw groove for fastening the center bolt, the outer circumferential surface is a hydraulic door hinge, characterized in that a plurality of O-ring is interposed for sealing. The method of claim 13, The piston, The inner side has a hollow portion, the outer end is formed with a round jaw to be inscribed in the second cylinder, the other side of the first guide groove formed obliquely in an oblique direction to the outside of the outer cylinder and the outside of the inner cylinder Hydraulic door hinges, characterized in that the plurality of rollers inserted into the second guide groove formed in at least one obliquely in an oblique direction are installed to face each other. The method of claim 13, The tension control device, A guide member having a conical shape inserted into an enlarged pipe portion formed to widen a tube diameter toward an opening hole on one side of the channel of the inner cylinder, and having a conveying passage formed therein; A cylindrical body supporting the guide body and having a hollow inside thereof, the support tube body having a plurality of supports having a gap at one end thereof in contact with the guide body; A spring interposed between the guide body and the support tube body; At one end, a rod passing through the conveying passage of the guide body is formed, and on one side of the outer circumferential surface, an opening and closing opening is formed to have a conical shape corresponding to the expansion part of the conveying passage, and at one side thereof, an operating rod having a threaded portion to be screwed with the blocking block; ; A blocking block which is a cylindrical body inserted into the support tube with a plurality of O-rings interposed on an outer circumferential surface thereof and screwed to a threaded portion of the operating rod; A handle coupled to an end of the operating rod; Hydraulic door hinges, characterized in that configured to include.

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