KR20010036914A - Door checker - Google Patents

Abstract

PURPOSE: An oil hydraulic door checker is provided to open a door easily by pairing with a spring hinge between doors, to regulate a door in multistage by the oil pressure generated while closing the door, and to stabilize the opening and closing of the door by operating the door in the state of burying an oil pressure regulator providing oil pressure to the door in oil. CONSTITUTION: A hydraulic door checker comprises; a primary supporting piece(20) having a primary fixed body(22); a secondary supporting piece(40) having a secondary fixed body(42); a cylinder(60) fitted to the primary fixed body fitted to the secondary fixed body and provided with an oil passing groove(72) extended vertically; a fixed shaft(100) provided with a big hole part(104) on the central part and a multi-threaded screw(102) on the lower end part, wherein the upper end is fastened with a nut(32) on the upper part of the primary fixed body through the cylinder; an oil pressure passage pipe(80) fitted to the inner circumferential face of the cylinder and provided with oil passages(82,84) bored vertically on the opposite side to the oil passing groove; an oil pressure regulator(120) provided with an internal screw(124) coupled with the multi-threaded screw on the inner circumferential face and an one-way check valve(142) at the lower end, wherein the upper outside is combined to the inside of the cylinder; a sealing nut(140) provided with an oil passage(144) to communicate with an oil tank and the groove formed on the check valve(142) and the cylinder; an oil pressure regulating screw(160) combined to the sealing nut to regulate the quantity of oil flowing to the oil passage.

Description

Hydraulic Door Checker {DOOR CHECKER}

The present invention relates to a hydraulic door checker, and more particularly, to a hydraulic door checker connected to the door and the door frame to control the closing force when opening and closing the door.

In general, the door checker is widely used for the automatic closing of doors and fire doors of office buildings and residential buildings, the general configuration of which is shown in FIG.

A piston (2) elastically pushed to the closed side by a spring is accommodated in the main body (1) of the door closer made of oil-tight oil containing oil, and one side of the piston (2) has a rack (RACK; 3). ) Is installed so that its shaft is engaged with the pinion (5) associated with the link (LINK) 4.

A flow path 7 having a check valve 6 is formed inside the piston 2, and a large diameter of the first return flow path 8 and a small diameter is formed between the operation path and the return path of the piston 2. The two return flow path 9 is formed.

The main body 1 and the link 4 are respectively fixed to the door and the door frame. When the door is opened to the door frame, the pinion 5 rotates and the rack 3 translates so that the piston 2 compresses the spring 11. It moves to the left side of the drawing.

After the external force applied to the door is removed, the piston 2 is returned to the right side of the drawing by the restoring force of the spring 11, where the piston 2 is when the tip of the piston 2 is in front of the first return flow path 8. After the working fluid pushed back is returned through the first and second return passages 8 and 9, and the tip of the piston 2 passes through the first return passage 8, the second return passage of the small diameter is provided. Only the fluid is returned. Accordingly, the door is decelerated shortly before closing and gently closed to prevent the impact of the closing.

The door checker as described above has a problem in that the main body 1 is large and the link 4 protrudes outward so that the exterior of the door is not beautiful.

In addition, the door checker of the FLUSH door installed at the entrance of the building is embedded in the lower part of the door frame.In this case, foreign matter such as water penetrates into the main body during cleaning, so that corrosion and contamination are not possible to disassemble and assemble during maintenance. There is a serious problem.

In order to solve this problem, the door is easily opened and closed by using a spring on the hinge installed in the side of the door and the door frame, but at the same time the hydraulic force to control the spring and the restoring force of the spring in the hinge Since it provides a large volume according to the manufacturing, there is a problem that the appearance is not beautiful.

Accordingly, the present invention was devised to solve the above problems, and an object of the present invention is to be provided in pairs with a spring hinge between the door and the door frame so that the door can be easily opened when the door is opened. When closed, hydraulic force is generated so that the door can be controlled in multiple stages.

Another object of the present invention is to allow the hydraulic regulator to provide hydraulic pressure to the door to be operated in a state loaded with oil, so that the opening and closing of the door can be made stable.

1 is a use state diagram showing a conventional door checker,

2 is an exploded perspective view of a door checker according to the present invention;

3 is a cross-sectional view of the coupling state of FIG. 2 before the first support piece is rotated;

4 is a cross-sectional view of the coupling state diagram of FIG. 2 in a state in which the first support piece is rotated;

5 is a sectional view taken along the line ″ E-E ″ of FIG. 3,

6 is a sectional view taken along the line ″ F-F ″ of FIG. 3.

<Explanation of symbols for main parts of drawing>

20: first support 22: first fixed body

24: multi-stage part 26: multi-sided

28: shaft passage hole 40: second support piece

42: second fixing body 44: incision groove

60: cylindrical tube 62: anti-rotation jaw

64: face 66: screw face

68: shaft passage hole 80: hydraulic passage pipe

82: the first oil euro 84: the second oil euro

100: fixed shaft 102: multi-threaded screw

104: large neck 106: polygon

108: screw surface 120: hydraulic regulator

122: polygon 124: female thread

126: oil passage 128: head

140: sealed nut 142: oil passage

160: hydraulic adjustment screw

The present invention for achieving the above object, the first support piece having a cylindrical first fixed body; A second support piece having a cylindrical second fixed body; An outer circumferential surface of the upper body of which the slide is fixed by the second fixing body and the rotation preventing means is inserted into the first fixing body by the slide fitting, and the inner circumferential surface is formed to open in the vertical direction, and forms two upper and lower extensions. A cylindrical tube which vertically extends an oil passage groove open to an inner center at one side of an inner circumferential surface of the lower extension portion; The large diameter portion is formed in the middle portion, the upper end is passed through the cylindrical tube so as to rotate in the same direction in accordance with the rotation of the first support piece is coupled to the nut on the upper side of the first fixed body, the lower end is formed with a multi-thread screw portion A fixed shaft; A hydraulic passage pipe whose outer surface is forcibly fitted to a lower expansion portion formed on the inner circumferential surface of the cylindrical tube body, and having a pair of oil passages vertically drilled in an axial direction at a position opposite to the oil passage groove formed on the inner circumferential surface of the cylindrical tube body; The upper outer surface is coupled to the upper and lower slides to prevent rotation on the inner circumferential surface of the cylindrical tube body, the inner thread is formed on the inner circumferential surface to be coupled to the multi-threaded screw portion of the fixed shaft, the inner lower end in communication with the female screw portion and the oil opened to the outside A hydraulic regulator provided with a passage and a downward one-way check valve, the lower head portion being slide-coupled into the hydraulic passage pipe; A sealing nut in which an oil passage is formed so as to communicate with an oil passage groove formed in the inner circumferential surface of the check valve and the cylindrical tube body; And a hydraulic adjustment screw coupled to the sealing nut to adjust the amount of oil moved to the oil passage.

At least two oil passages are formed on one side of an outer surface of the hydraulic passage pipe in a vertical direction.

In addition, the inner circumferential surface and the outer circumferential surface of the hydraulic control body of the cylindrical tubular body which is slide coupled to each other is formed in a rectangular shape with a rounded corner of each cross section so as to prevent rotation when lifting.

The anti-rotation means is characterized in that the cutting groove formed in the lower end of the second fixed body and the anti-rotation jaw is formed protruding on the outer peripheral surface of the cylindrical tube body and fitted in the vertical direction.

In addition, the inner circumferential surface of the first fixed body and the upper end outer circumferential surface of the fixed shaft coupled thereto are characterized in that the cross section is polygonal so that they do not rotate with each other.

Hereinafter, the hydraulic door checker according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows an exploded perspective view of the hydraulic door checker according to the present invention, Figure 3 is a longitudinal cross section taken before the first support piece is rotated in the state combined with Figure 2, Figure 4 is a combined state of Figure 2 In the first support piece is taken in the cross section in a rotated state. 5 is a planar cross-sectional view illustrating a coupling state between the fixed shaft and the first fixed body in FIG. 3. And Figure 6 is a cross-sectional view showing a coupling state of the upper expansion portion and the hydraulic regulator of the cylindrical tube.

The present invention is applied to a pair or two pairs with a spring hinge in the door for opening and closing by a spring force, the first support piece 20 and the second fixed body having a circular first fixed body 22 ( The second support piece 40 having a 42, and the cylindrical tubular body 60 and the slide fitting is fixed so that the rotation is prevented in the second fixed body 42 and the upper end is fitted into the first fixed body 22 and The fixed shaft 100 is coupled to the first fixed body 22 so that the upper end portion is rotated in the same direction as the first support piece 20 rotates, and the hydraulic pressure is lowered according to the rotation of the fixed shaft 100. Adjusting body 12, the hydraulic passage pipe 80 for moving the oil in accordance with the lifting and lowering of the hydraulic regulator 120, and the sealing nut 140 for sealing the cylindrical tube 60 so that the oil can be stored, And it is configured to include a hydraulic adjustment screw 160 for adjusting the amount of oil moved to the oil passage.

The first support piece 20 is a plate-like structure in which a plurality of bolt coupling holes 21 are formed to be fixed to a door or a door frame, and a first fixing body 22 is provided at one end thereof. The fixed body 22 is a circular hollow tube penetrating up and down is formed on the inner circumferential surface of the multistage jaw portion 24 to narrow the inner diameter upward, the inner circumferential surface of the middle jaw forms a multi-sided surface 26 having a six-sided cross section. .

In addition, the upper surface of the first fixed body 22 is formed with a through hole 28 of the small diameter so that the upper end of the fixed shaft 100 can pass.

The second support piece 40 is formed in the same plate-like structure as the first support piece 20, a plurality of bolt coupling hole 41 is formed on the surface of the circular hollow tube penetrating up and down at one side end thereof. A second fixing body 42 is provided, and at the lower end of the second fixing body 42, the incision grooves 44 which are opened downward are at least two and formed to face each other.

On the upper side of the second fixed body 42, the first fixed body 22 is seated in the same axial direction, and a slide ring 180 is interposed therebetween.

The cylindrical tubular body 60 is inserted into an inner circumferential surface of the first fixed body 22 provided at an upper end thereof via the second fixed body 42, and the second fixed body 42 on the intermediate outer circumferential surface thereof. Is inserted into the cutting groove 44 of the anti-rotation jaw 62 is provided to protrude so as to prevent rotation about the second fixed body (42).

The inner circumferential surface of the cylindrical tubular body 60 has two stages of upper and lower extensions having a predetermined section, and the inner circumferential surface of the upper expansion portion has a polygonal polygonal face 64 having a rounded corner at its cross section, and the lower A screw surface 66 is formed on the lower inner circumferential surface of the expansion part so that the outer circumferential surface threaded portion 146 of the sealing nut 140 may be coupled thereto, and an axial passage hole 68 may be formed on the upper surface of the cylindrical tube 60. .

In addition, one side of the inner circumferential surface of the lower expansion portion of the cylindrical tubular body 60 is formed with an oil passing groove 72 upwards with a predetermined width, and forms an inclined tapered surface at a predetermined angle so that the inner diameter thereof becomes narrow when deployed upward.

The fixed shaft 100, the upper end is continuously passed through the cylindrical tube 60 and the first fixed body 22 so as to rotate in the same direction according to the rotation of the first support piece 20 and the first A screw surface 108 is formed to be coupled through the upper shaft through hole 28 of the fixing body 22, the upper end of which is coupled to the nut 32. And the lower side of the screw surface 108 is formed with a polygonal portion 106 to be fitted to the inner polygonal surface 26 of the first fixed body 22, the middle portion of the large diameter portion having a large outer diameter A 104 is formed to have a predetermined thickness, and a multi-threaded screw portion 102 is formed below the large diameter portion 104.

The hydraulic passage pipe 80 is forcibly fitted to the first expansion portion formed on the inner circumferential surface of the cylindrical tubular body 60, and the shaft is located at a position opposite to the oil passage groove 72 formed on the inner circumferential surface of the cylindrical tubular body 60. The upper and lower pairs of the first and second oil flow paths 82 and 84 are drilled.

The hydraulic regulator 120, a female thread portion 124 of a predetermined depth is formed on the inner circumferential surface to be screwed with the lower multi-threaded thread portion 102 of the fixed shaft 100, the female screw portion 124 at the lower end It is provided with a one-way check valve 142 in communication with, the outer circumferential surface has a polygonal portion 122 and can slide up and down on the polygonal surface 64 of the cylindrical tubular body 60 through the hydraulic passage pipe (80) To be fixed.

On the other hand, the lower side of the hydraulic regulator 120 is formed with a head portion 128 having a large outer diameter so as to slide in a sealed state inside the hydraulic passage pipe 80, the head portion 128 for preventing oil leakage packing Or an O-ring.

In addition, reference numeral 126 denotes an oil passage, which means that the oil stored inside the oil storage chamber 201 simultaneously with the check valve 142 when the multi-thread screw portion 102 of the fixed shaft 100 is coupled to the female screw portion 124. When the multi-threaded screw unit 102 is loosened, the oil in the oil storage chamber 201 is moved to the upper oil storage chamber 200 only by the oil passage 126.

In addition, the outer polygon portion 122 of the hydraulic regulator 120 is preferably made of a rounded square shape.

The sealing nut 140, the oil passage 144 is formed so that the check valve 142 and the oil passage groove 72 formed on the inner circumferential surface of the cylindrical tube 60. In addition, the bottom surface of the sealing nut 140 is provided with a hydraulic adjustment screw 160 to adjust the amount of oil moved through the oil passage 144 in accordance with tightening and loosening.

In the drawings, reference numerals 200 and 201 denote upper and lower oil storage chambers of the multi-threaded threaded portion 102 of the fixed shaft 100 and the hydraulic regulator 120 coupled thereto, and the cylindrical tubular body 60 and the hydraulic passage pipe coupled thereto ( It refers to a space formed inside the 80, the oil stored by the hydraulic regulator 120 is lowered in accordance with the rotation of the fixed shaft 100 is the check valve 142 and the hydraulic passage pipe 80 of the lower side The oil flows through the oil passages 82 and 84.

That is, when the first support piece 20 is rotated in the state in which the second support piece 40 is fixed, the fixed shaft 100 rotates in the same direction, and at the same time, the hydraulic regulator 120 has a multi-threaded screw part ( By tightening and loosening of 102) is moved in the vertical direction. At this time, since the flow path is opened or closed by the one-way check valve 142, when the check valve 142 is blocked, the oil storage chamber 200 through the oil passages 82 and 84 of the hydraulic passage pipe 80 ( 201) oil shortage will be filled.

Here, the check valve 142, when the hydraulic regulator 120 is lowered so that the ball closes the oil passage so that the oil stored in the lower oil reservoir 201 does not pass upward, the hydraulic regulator 120 At the time of rising), the oil in the upper oil storage chamber 200 is to be moved to compress the spring to the lower oil storage chamber 201.

Reference numeral 210 is a bushing, which is fixed to the inner upper end of the cylindrical tube 60 to slide the support shaft 100 and to prevent wear during rotation.

The operating state of the hydraulic door checker configured as described above will be described.

3 and 4, the first support piece 20 of the assembled door checker is bolted to the door and the second support piece 40 is bolted to the door frame. Then, when the door is opened, the first support piece 20 rotates in the clockwise direction while the door is opened, and at the same time, the rotation is prevented by the polygonal surface 26 of the first fixing body 22. The fixed shaft 100 is rotated in the same direction.

Then, the multi-threaded screw unit 102 of the fixed shaft 100 is rotated in the screw tightening direction to move the hydraulic regulator 120 coupled to the end upwards, the hydraulic regulator 120 at this time is the outer polygon Since the 122 is prevented from rotating by the polygonal surface 64 of the cylindrical tube 60, the oil is moved upward, and at the same time, the oil in the oil storage chamber 200 passes through the one-way check valve 142 and the oil passage 126. The lower oil storage chamber 201 is moved quickly. Accordingly, the opening operation of the door can be easily performed.

In the closing operation of the door, as shown in FIG. 3, the door is rotated counterclockwise, and at the same time, the first support piece 20 and the fixed shaft 100 connected thereto are rotated counterclockwise. 120 is moved downward by the loosening of the multi-threaded screw 102. At this time, since the oil does not pass through the check valve 142 as shown in FIG. 4, the oil passage 144 of the sealed nut 140, the oil passage groove 72 of the cylindrical tube 60, and the hydraulic passage pipe ( 80 is moved to the upper oil storage chamber 200 through the oil passages 82 and 84 and the gaps and oil passages 126 coupled to each other so that the closing operation of the door is made slowly.

On the other hand, the lower oil passage 84 formed in the hydraulic passage pipe 80 is opened and closed in accordance with the lifting and lowering of the hydraulic regulator 120, the door is quickly opened by the opening of the oil passage 84 in the initial closing operation. It can be rotated and the oil flow path 84 is blocked at the closing moment so that the door is gradually closed.

In other words, at the beginning of the closing operation of the door, the head portion 128 of the hydraulic regulator 120 is positioned above the oil passage 84 so that the oil in the oil reservoir 201 is connected to the oil passage 84 and the oil passage. Since the oil is moved to the oil storage chamber 200 through 126, the door is rapidly rotated in the initial state while the head portion 128 of the hydraulic regulator 84 is lowered to block the oil flow path 84. Since only the oil passage 82 is moved to the oil storage chamber 200, the closing force of the door is controlled.

Therefore, the hydraulic door checker according to the present invention is provided in pairs with a spring hinge between the door and the door frame to selectively control the spring force, so that the user can be easily opened in the opening operation of the door when the door is opened and closed. And when the door is closed, the hydraulic force is generated is the effect that the door is closed slowly for a certain period.

In other words, the door's closing operation is rapidly rotated in the initial state, but from the moment it crosses a certain track, the door's closing operation is standing so that it can be protected when a child's hand is caught and also prevents noise when the door is closed. You can do it.

In addition, since the hydraulic regulator which is raised and lowered during the opening and closing operation of the door maintains a state in which oil is always stored in the oil, the opening and closing operation of the door can be made stable.

Claims (5)

A first support piece 20 having a cylindrical first fixed body 22; A second support piece 40 having a cylindrical second fixing body 42; An outer circumferential surface of the second fixed body 42 and the upper end of the slide fitting fixed by the rotation preventing means is inserted into the first fixed body 22, the slide fitting is inserted, the inner circumferential surface is formed to open in the vertical direction, the second stage A cylindrical tube body 60 extending upward and downward, and having an oil passage groove 72 vertically extending to one of the inner circumferential surfaces of the lower extension part; A large diameter portion 104 is formed in the middle portion, and the first fixed body 22 passes through the cylindrical tube 60 such that an upper end thereof rotates in the same direction as the first support piece 20 rotates. A fixed shaft 100 coupled to the nut 32 at an upper side thereof and having a multi-threaded screw portion 102 formed at a lower end thereof; The outer surface is forcibly fitted to the lower expansion portion formed on the inner circumferential surface of the cylindrical tube 60, a pair of oil passages in the axial direction in the position opposite to the oil passage groove 72 formed on the inner circumferential surface of the cylindrical tube 60. A hydraulic passage pipe 80 through which the 82 and 84 are perforated; The upper outer surface is coupled to the upper and lower slides to prevent rotation on the inner circumferential surface of the cylindrical tube 60, the female screw portion 124 is formed on the inner circumferential surface to be coupled with the multi-threaded screw portion 102 of the fixed shaft 100, An oil passage 126 communicated to the outside and a head portion 128 at a lower side thereof, the hydraulic regulator 120 being slide-coupled in the hydraulic passage pipe 80; A check valve 142 provided at a lower end of the hydraulic regulator 120 to control oil movement between the upper oil storage chamber 200 and the lower oil storage chamber 201 in one direction; A sealing nut 140 in which an oil passage 144 is formed to be in communication with the check valve 142 and an oil passage groove 72 formed on an inner circumferential surface of the cylindrical tube 60; And a hydraulic adjustment screw (160) coupled to the sealing nut (140) to adjust the amount of oil moved to the oil passage (144). The method of claim 1, Hydraulic door checker, characterized in that at least two oil passages are formed in one side of the outer surface of the hydraulic passage pipe in the vertical direction. The method of claim 1, The inner circumferential surface of the cylindrical tube body and the hydraulic circumferential surface of the hydraulic control body is slide-coupled to each other, characterized in that the hydraulic door checker, characterized in that the cross-section is formed in the shape of a rounded corner to prevent the rotation when lifting. The method of claim 1, The anti-rotation means is a hydraulic door checker, characterized in that the cutting groove formed in the lower end of the second fixed body and protruding to the outer peripheral surface of the cylindrical tube body and the anti-rotation jaw fitted in the vertical direction. The method of claim 1, The inner circumferential surface of the first fixed body and the outer peripheral surface of the upper end of the fixed shaft coupled thereto are hydraulic door checkers, characterized in that their cross sections are polygonal so that they do not rotate with each other.