KR930010633B1 - Door closer - Google Patents

Abstract

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Description

Door closer

1 is a longitudinal sectional view showing an embodiment of a door closer according to the present invention.

FIG. 2 is a cross sectional view taken along the line II-II in FIG. 1; FIG.

3 is an exploded perspective view of the embodiment.

4A, 4B, 4C, and 4D are cross-sectional explanatory views showing the closing, opening, opening, and closing doors in the damper portion of the embodiment.

5A, 5B, 5C, and 5D are cross-sectional explanatory views showing the closing time, the closing door, the vicinity of the closing door, and the opening time of the damper part of the embodiment.

6A and 6B are explanatory views showing operations in the opening direction and the closing direction.

7 is a plan view showing an example of use of the embodiment.

* Explanation of symbols for main parts of the drawings

1: body case 3: inner cylinder

4: main arm 6: bearing

7: axis of rotation 9, 9: a pair of threads

10, 10: pair of rotor blades 11, 16, 17, 23, 24, a: passage

12: reverse displacement 19: main adjustment screw

20: adjusting valve 26: adjusting screw

37: return spring 46: sub-arm

a: through

The present invention uses a polymer viscous fluid, other high viscous fluid and a return spring, and automatically closes the door by restoring force by the axial force of the return spring, and a braking force to the door by a resistance force by the high viscous fluid. The present invention relates to a door closer in which the door is gently and gradually brought into contact with each other.

As a conventional door closer, a piston is built in a hydraulic cylinder installed in a horizontal body case with a return spring interposed therebetween, and the piston is rotatably supported on one side of the cylinder by a pinion shaft with respect to a rack placed on one side wall of the piston. It is known to pinion pinions.

In the door closer configured as described above, the main body case is fixed to the door, and the pinion shaft is fixed to the upper frame of the door through the arm, the link, and the lock fitting, thereby opening the piston to the return spring by the pinion. When the door is closed, the door is automatically and gently closed by the restoring force by the axial force of the return spring and the resistance to the working shaft.

In the door closer, a part of the rack and the pinion is provided with an indentation portion, so that the door is provided with a free stop area (an area that can be manually opened and closed) at a predetermined opening angle within the range of the door opening angle. Both ends of the rack and the pinion are held together so that the door can be locked at a predetermined opening angle.

However, in the door closer of this type, the bearing of this pinion wears out relatively early due to the thrust load of the pinion shaft because the piston is the power transmission means driven by the pinion on the side wall of the rack. In addition, when power is transmitted to the piston through the rack, the piston and the cylinder are easy to wear out due to the unbalanced load acting on the piston in the direction of movement thereof. When an unpleasant vibration sound occurs due to the forced occlusion or disengagement of both ends, or when the door is opened or closed rapidly or with strong force, or when the door is subjected to strong wind pressure at the opening position, There were problems such as being easy to be damaged by collision.

The present invention takes account of these problems with the conventional door closer as described above, and operates without excessive force between each member, and if necessary, it is necessary to securely latch it until the closing of the door, not just the closing speed. It is therefore desirable to provide an ideal door closer which allows the speed to be freely and easily adjusted so that a speed can be obtained.

In order to achieve the above object, a hollow is fixed to a central portion of an inner cylinder sealed by a lid of a main case in which a main arm is installed, and the shaft is partitioned symmetrically in the inner cylinder by a rotation shaft stored therein. While forming a pair of chambers in communication with passages penetrated through the rotating shaft, each chamber is equipped with a pair of rotary blades with reverse displacement paths protruding from the rotating shaft, and the in-phase chamber is filled with a high viscosity fluid. A sub-case of sub-arm laying, which is rotated with this, is connected to the rotating shaft, and a restoring spring for restoring force is provided in the main body case by rotating in the opening direction of the rotating shaft. In the city, each individuality, abolition materials, and in the center of the bottom of the main body case A passage for communicating with the high pressure chamber and the low pressure chamber divided by the rotary blades of the pair of chambers at the same time that the cutting screw is arranged to be able to adjust the passage between the bearing and the bearing through the control valve, and immediately before the closing door is completed. It is intended to provide a door closer formed by a rotating shaft and an inner cylinder, wherein adjustment screws are screwed in the passage so that the flow rate of the high viscous fluid in the passage can be adjusted.

Since the opening force of the door is applied to the rotary shaft as the one-way rotational force, this rotary shaft and its rotary vane rotate in one direction.

At this time, the reverse displacement in the passage of the rotor blade opens the passage by the flow of high viscous fluid in each room, and the high viscous fluid flows to the opposite side of each chamber and passes through the passage by the bearing and the rotating shaft, and the high viscous liquid flows between the two chambers.

At this time, the restoring force is accumulated in the return spring, but when the angular clutch portion is provided, the spring power (restoring force) is locked at the predetermined opening angle, and the door is in the free stop state at the opening angle above the locking angle. Of course, in the direction of the gate opening, the damper due to the resistance of the high-viscosity fluid is turned off in all the zones.

When there is an angular clutch in the direction of the door closing, the damper is turned off from the door angle to the spring power stop.When the door is closed again, the spring power lock is released and the spring power is turned on. As it is rotated in the opposite direction from the opening, the reverse displacement closes the passage and the high viscous fluid of the pair of threads passes through the passage of the bearing and the rotating shaft and flows from the high pressure chamber to the low pressure chamber, but this passage is considerably smaller than the passage of the rotorcraft. Since it is formed, a resistance force is generated when a high viscosity flow flows through the passage, and this becomes a damper force and the door is gently touched.

Furthermore, if the passage established on the high pressure chamber side of the rotating shaft is matched with the passage installed in the inner cylinder, the viscous fluid in the high pressure chamber of one chamber passes through the passage and the other flows into the low pressure snow of the chamber. The damper force is weakened when the door closes by the door, and the door is in the middle speed, and the door is latched.

Alternatively, the damper force in the direction of closing the door immediately before closing is adjusted by adjusting the gap between the adjusting valve and the bearing by the adjusting screw, whereby the closing speed of the door is not only controlled arbitrarily, but also by the other adjusting screw. If the high viscous flow volume of the passage is neglected, the closing speed can be arbitrarily increased or decreased from immediately before closing to the closing.

Best Mode for Carrying Out the Invention Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 through 5 (a), (b), (c), and (d), the outer cylinder 2 and the inner cylinder 3 are concentric in the main body case 1 having a user cylindrical shape. It is formed integrally, the main arm (4) is fixed to one side of the outer cylinder (2) is fixed to the door not shown.

The cylindrical bearing 6 fitted to the screw cylinder 5 placed in the center of the bottom of the inner cylinder 3 is fixed to the central part in the inner cylinder 3, and the cylindrical rotating shaft 7 also rotates in this bearing 6 as well. A pair of seals 9 which are externally covered and flattened in the plane 3 in the inner cylinder 3 by the left and right protrusions 8 and 8 in the rotary shaft 7 and the inner cylinder 3. ) And (9) are partitioned as shown in FIG. 4 and FIG.

The rotary shaft 7 is provided with a pair of rotary blades 10 and 10 protruding in a radial direction, which are embedded in the pair of seals 9 and 9 so as to rotate.

In the pair of rotor blades 10 and 10, passages 11 and 11 respectively communicate with the high pressure chamber 9a and the low pressure chamber 9b of each of the chambers 9 and 9 and penetrate in the circumferential direction. At the same time, the circumferential reverse displacements 12 and 12 are rotatable blades 10 and 10 and the rotating shaft 7 so as to be seated and transferred to the toilet seats 11a provided in the passages 11 and 11, respectively. It is inserted and disposed so as to move in the longitudinal direction in the long holes 14 and 15, which penetrate up and down to coincide with the outer shaft 13, which is sheathed on the outer side, and are elongated in the circumferential direction.

As the opening force is applied to the door, the rotary shaft 7, the rotor blades 10, 10 are rotated in the counterclockwise direction as will be explained later by FIG. 5, whereby a pair of threads 9, As the highly viscous fluid in (9), the reverse grounds 12 and 12 are moved, and the passages 11 and 11 are connected to the clockwise rotation in the reverse direction described above by the passages 11 and 11. The reverse displacements 12 and 12 are formed to be abolished.

In addition, the bearing 6 and the rotating shaft 7 have a passage 17 communicating with a pair of chambers 9, 9, 9b, and 9b of the chamber 9, and a high-pressure chamber 9a. And (9a) the passages 16 communicating with each other are arranged up and down to be in a split state, and are formed to be substantially smaller than the passages 11 and 11 of the rotor blades 10 and 10, and the high viscosity at the time of closing. The resistance force when the sieve flows through the passages 16 and 17 can be used as a damper force.

In addition, the screw barrel (5) installed at the bottom center of the main body case (2) has a main adjustment screw (19) having an outer side of the control valve (20) through an adjustment spring (21) in the bearing (6) in the vertical direction. The inner wall surface of the bearing 6 and the control valve 20 by moving the main adjustment screw 19 in the up and down direction. The clearance a between them is adjusted, whereby the flow rate of the high-viscosity flows through the passages 16 and 17 is added and subtracted so that the damper force can be adjusted.

Furthermore, the door is closed at the upper surface of one of the protrusions 8 and the outer circumference of the rotary shaft 7 in the inner cylinder 3, and the high pressure chamber 9a of the one chamber 9 and the other chamber 9 are closed. The passages 23 and 24 communicating with the low pressure chamber 9b of the () are formed, respectively, and the screw holes 25 penetrating through the protrusions 8 of the inner cylinder 3 by communicating with the one passage 23. The adjusting screw 26 is in the liquid-tight state through the 0 ring 27 to adjust the flow rate of the high viscous fluid passing through the passage 23 by the screwing in the vertical direction, whereby the door immediately before completion of the closing door. The closing speed is adjustable.

Furthermore, a plurality of rotating balls 28... Are placed on the same circumference of the outer shaft 13, and the rotating balls are mounted between the shaft support plate 20 and the outer shaft 13, which are external to the rotating shaft 7. (20) ... and the shaft support plate 23 is fixed to the inner cylinder 3 of the main body case 1 with the pin 30, and furthermore, through the 0 ring 31 on the rotating shaft 7 A damper portion A is formed by enclosing the lid 32 and attaching the lid 32 to the inner cylinder 3 to seal the high-viscosity liquid in the seals 9 and 9.

In the upper portion of the damper A in the illustrated example, the fixed plate 33, the intermediate plate 34, the movable plate 35, the angle of rotation by the rotation engaging element 36 by a plurality of balls or rollers, and the like. The clutch part B is comprised.

In other words, the fixing plate 33 inserts the rotary shaft 7 protruding upward from the lid 32 into the center hole 33a, and at the same time the protrusions of the inner groove 3 through the grooves 33b ... 3a) ... is fixed in the intermediate state on the inner cylinder (3).

In the state of the fixed plate 33, the intermediate plate 34 and the movable plate 35 are sequentially disposed in the intermediate state, but the intermediate plate 34 is a projection 34b protruded inward from the central hole 34a. And the grooves 7a provided on the rotary shaft 7 and the grooves 34a and 34d mounted on the upper and lower sides of the outer periphery while being externally mounted on the rotary shaft 7. The engagement angle of the said intermediate | middle plate 34 is regulated so that the said intermediate | middle plate 34 may rotate by a predetermined angle by engaging the movable part 35 and the protrusion part 35a, 34c which protruded on the outer periphery of the stationary plate 33. As shown in FIG.

In addition, the intermediate plate 34 is built between the groove portion 34e of the outer circumference thereof, the outer cylinder 2 and the inner cylinder 3, and the return spring whose one end 37a is hung on the groove portion 2a of the outer cylinder 2 ( The other end 37b of 37) was hung.

On one side, the movable plate 35 has a projection 35c protruding from the inner circumferential surface of the central hole 35a, and an inner surface of the sub-case 39 fixed to the rotary shaft 7 with a fixing screw 38. It is fixed in this sub-case 39 by being attached to the protrusion 39a.

On the rotational circumference of the intermediate plate 34, three through holes 40 are laid at equal intervals in the circumferential direction, and the diameters of the intermediate plates 34 are equal to the intermediate plate 34. The rotating engagement paper 36, which is formed by a sphere, a rotating rod, or the like larger than the plate thickness, is rotated and installed to move in the vertical direction.

On one surface of the fixing plate 33 and the movable plate 35, which faces the intermediate plate 34, the three recesses 41 for engaging the rotation engaging element 36 with each other are provided. ..., (42) ... are arranged in the same number and the same positions as the through holes 40 ... and have the same curvature as that of the rotational engagement element 36 ... have.

Furthermore, the movable plate 35 is on the same circumference as the recessed part 42... And the same number as the recessed part 42. The shallow concave indentation 43 is shifted by the predetermined dimension in the circumferential direction, and is recessed freely from the rotation engaging element 36.

In the angular clutch portion B, in the closed position a1 shown in FIG. 6A, the upper part of the rotational engagement portion 36 is fitted into the recess 42, so that the movable plate 35 and the intermediate plate 34 are In the locked state, when the sub-case 39 is rotated by the opening force, the movable plate 35 is rotated with this, and the intermediate plate 34 is also rotated by a predetermined angle in the same direction.

By this, the return spring 37 is recommended, spring power is generated (restoration force is accumulated), and the rotation of the intermediate plate 34 is regulated at a predetermined opening angle (position in FIG. ) Will be rotated again in the same direction.

That is, the insertion of the concave portion 42 ... and the rotational engagement element 36 ... is released so that the spring power is locked at the position a2, and the concave portions of the movable plate 35 and the fixed plate 33 (42) ..., (41 ...) coincide and the rotational engaging member 36 ... is lowered so that the recessed part 41 of the fixed plate 33 at the recessed part 42 ... of the movable plate 35 is The intermediate plate 34 is locked to the stationary plate 33, whereby the movable plate 35 is freed, thereby forming the door free stop area C of the city, and furthermore, the door 44 is When the individual angle by a predetermined angle is inserted into the other shallow indentation 43 ... of the movable plate 35, the rotation engaging element 36 ... is inserted, the door 44 is locked at the door lock position a3 shown, The rotation engaging element 36 is also fitted to the recess 41 of the fixed plate 33.

Further, the door 44 is opened, and the movable plate 35 is rotated to release the fitting of the recess 43 and the rotation engaging member 36, so that the movable plate 35 is free. And the free stop area 0 to the door opening angle position a4.

In the closing direction, as shown in Fig. 6B, the door is gently closed due to the resistance of the spring power and the high viscous fluid at the spring power lock position a2 as shown in Fig. 6b. When the damper force is weakened, it accelerates from here and reaches the closing position a1.

In order to use the door closer comprised in this way, as shown in FIG. 7, the main arm 4 of the main body case 1 is fixed to the door 44 by the snow-seating tool 45, and the subcase 39 The adjustable-length sub-arm 46, which is mounted so as to be rotatable in the vertical direction, is mounted on the upper frame 48 by the mounting plate 47.

Further, in Figs. 6A and 6B, E denotes a damper ON region, and F denotes a damper OFF region.

Since the present invention is constructed as described above, the door is slowly and smoothly touched by the high viscosity resistance force by the spring effect and the high viscous fluid from the predetermined opening angle to the close door position. In accordance with the passage of the inner cylinder, high viscous fluid flows from the high pressure chamber of one chamber to the low pressure chamber of the other chamber through these two passages, and is accelerated just before the closing of the door. It doesn't happen.

Furthermore, adjustment of the closing speed from the predetermined opening position to near the closing position and the speed from the immediately preceding closing position to the closing position can be made by easy operation with the main adjusting screw. In addition, since the latching action can be eliminated by mounting the adjustment screw of the door, various action of the door is possible, and furthermore, since the rotational force of the door is transmitted to the pair of rotor blades via the rotation side without difficulty. The inner surface of the rotor blade or the pair of threads is not worn out unevenly, thereby improving the internal resistance.

Claims (1)

The main body case on which the main arm is attached is fixed to the hollow bearing in the center of the inner cylinder sealed by the lid, and is formed in a symmetrical partition in the inner cylinder by the rotating shaft axially connected thereto, but is in communication with the passage passing through the bearing and the rotating shaft. A pair of rotary blades are formed in the chamber, and a pair of rotor blades having a reverse displacement laying passage protruding from the rotary shaft is built in the chamber so that the in-phase chamber is filled with high viscous fluid, and the rotary shaft rotates with it. A sub-case of arm laying is connected, and a sub-arm of sub-arm laying, which is rotated with this, is connected to the rotating shaft in the main body case, and the restoring force is restored by rotation in the opening and closing direction of the rotating shaft in the main body case. In addition to the excretion of the spring, each of the personality and abolition of the reverse variation at the time of opening and closing In addition, the bottom center of the main body case is screwed and arranged to adjust the path between the bearing and the bearing via the adjustment valve at the bottom center of the main body, and at the time of closing the closing door, by means of the rotor blades of the pair of threads And a passage communicating with the divided high pressure chamber and the low pressure chamber is formed by a rotating shaft and an inner cylinder, respectively, and a screw is disposed in the passage so as to adjust the amount of high viscous flow of the passage.