TW200417671A - Two-way door closer - Google Patents

Abstract

This invention porvides a small two-way door closer with hydraulic power stopper, which can mount on a door, prevent the door from shutting violently by saving the energy from opening the door, characterized in: Arrange a elastomer between a buffer shaft and cylinder, to save energy from the rotation relative to each other, and a oil chamber is formed seeween the buffer shaft and cylinder, the shaft of the buffer points up in the oil chamber, then, install a piston screw on the buffer shaft in a movable and non-rotate able manner, in additional, the circumference of the piston screw engaged with a side of the cylinder. According to the open direction of the door, the buffer shaft or the cylinder can scrotater to movie the piston screw inside the oil chamber.

Description

200417671 (1) Description of the invention: (1) The technical field to which the invention belongs The present invention relates to a double-opening door closer combined with a hydraulic brake structure in a spring-type door closer, and more particularly to a combination of a During each door opening operation in the pulling direction, the door closing operation is performed using the potential energy accumulated during the door opening operation, and the accumulated potential energy is used to limit the sharply closed hydraulic brake structure during the door closing operation. A simple, small double-opening door closer that can hold the door closer body in the door. The present invention also relates to a double-opening door closer in which the braking structure is combined, and a freedom capable of temporarily stopping the opening and closing operation of the door in the middle of the door from the 0 o'clock position to an open position above 90 degrees left and right is combined. Double-opening door closer with stop mechanism. (2) In the prior art, as a door hinge device for supporting double-open doors provided at the entrances of various stores, a hinge in a top hinge device such as buried in a ceiling and a hinge in a bottom hinge buried in a floor are generally used. Door hinge device to support the door with a shaft. The existing double-opening doors that open in both directions are mainly in the form of being buried in the floor, so the necessity of construction and the inconvenience due to rain and cleaning require cleaning agents. Problems often occur. In addition, the existing double-hinged door hinge devices also use spring-type door closers, but they are all devices that only close the door by the force of a spring, so there is a danger of a sudden opening and closing operation. In addition, the current center-hanging door closer -6-200417671 cannot be made into a double-opening structure because it determines the way to open the door left and right according to the spring tightening direction and the cutting direction of the piston bolt. It also causes problems. From this point of view, a double-open spring-type door closer that has a relatively simple structure, can be miniaturized, and has a small number of exposed portions during installation and has a good appearance is also recently proposed (Patent Document 1). In addition, another device such as a bumper hinge that uses oil pressure to adjust the closing speed of the door to brake and absorb the closing force of the door has also been proposed (Patent Document 2). [Patent Document 1] Patent No. 3 02 3 64 9 [Patent Document 2] Special Fair 7-1 82 9 No. 1 For example, Patent Document 1 describes a spring-type door closer 1 01, as shown in FIG. 17 As shown in the figure, in the cylindrical body housing 102, a rotating shaft 104 protruding at an end is configured to be rotatable, and a coil spring 10 is fitted around the rotating shaft 104, and a rotating shaft is also embedded outside. The upper and lower stoppers 1 06 and 1 07 of 1 04 can be rotated within a predetermined angle range. The upper end of the coil spring 108 is fixed to the upper stop member 106, and the lower end of the coil spring 108 is fixed to the lower upper member 107. A stopper pin 103b protruding from the inside of the mounting plate 103 covering the upper portion of the main body housing 102 is connected to a stopper portion 106b of the upper stopper member 106, and is protruded from the bottom plate 105 of the main body housing 102. The stopper pin 105b is connected to the stopper portion 107b of the stopper member 107 on the lower side. In addition, such spring-loaded door closers 010 are installed by burying the main body casing in the upper and lower portions of the door, and fixing their mounting plates. Among the joint fittings on the floor side, the projecting end of the rotating shaft is fitted and fixed, and is installed and used. For this reason, since this spring-type door closer only has a coil spring and a stopper member installed around the rotation shaft, its structure is simple and can be made into a small structure, so it can be installed into the interior of the entry door, and its appearance is not attractive. Eye-catching, can be effectively used for door hinges of double-opening doors. However, in order to make use of the potential energy of the coil spring, the above-mentioned door closer can give potential energy to the door in the locking direction, and in order to realize the automatic closing of the door, there is no braking part when the door is closed. In order to solve such a problem, it is now necessary to use a buffer mechanism in addition to such a door closer. However, the spring-type shock absorber mechanism described in the above-mentioned Patent Document 2 can only use a single-opening door, and is not suitable for a double-opening application.

In addition, the aforementioned self-closing door hinge cannot be added with the function of releasing and holding the door during the opening operation of the door. For example, wedge-shaped stoppers must be inserted between the door and the floor, or the door can be stopped by suitable means such as a hook. Measures such as one side of the floor, so in any case, it takes time for people to bend over. For this reason, in order to improve the above-mentioned problems, a free stop mechanism and the like disclosed in Patent Literature 3 and Patent Literature 4 have been proposed. However, the door closers in these documents do not correspond to double-opening door closers. [Patent Document 3] Japanese Patent Application Laid-Open No. 1 0-220 1 20 [Patent Literature 4] Japanese Patent Application Laid-Open No. 9- 1 5 8 60 5 (3) SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a A well-known spring-type door closer is combined with a double-opening door closer of an oil pressure brake mechanism to solve the problem of the existing door closers described in -8-200417671. Another object of the present invention is that, in a double-opening door closer in which the hydraulic brake structure is combined, by providing a relatively simple structure, the door can be opened from a position of 0 o'clock to an opening position of more than 90 degrees left and right. A double-opening door closer with a free-stop structure that temporarily stops the opening and closing operation of the door on the way to solve the problems of the existing door closers. In the present invention, the piston in the oil chamber is moved coaxially according to the opening action of the door on one side and the opening action of the other side in the spring-type door closer, and the oil pressure is used to restrict the piston movement when the door returns. The brake mechanism 'realizes a beautiful double-opening door closer with a coaxial double-opening function, which can be installed in a door. In addition, the present invention incorporates a free stop mechanism ', so that it can perform a function of continuously stopping from a position where the door opening angle exceeds 90 degrees left and right. In order to achieve the above object, the technical solution adopted by the present invention is: a double-opening door closer, which is composed of a door frame side fixing member fixed in the door frame side and a door side fixing member that can be rotatably installed in the door frame side fixing member. The structure is characterized in that the output shaft installed in the door frame side fixing member, when the door is opened to one side, an outer wheel that rotates in the opening direction together with the door opening action, and when the door is opened to the other side, The inner wheels that rotate in the opening direction together with the opening operation of the door are each rotatably installed in the door frame-side fixing member, a cylinder is installed in the outer wheel, and a buffer shaft inserted into the cylinder is installed in the inner wheel. An elastic body capable of accumulating potential energy through the relative rotation of the buffer shaft and the cylinder is arranged between the buffer shaft and the cylinder. The buffer shaft and the cylinder form an oil chamber together. A piston bolt is mounted on the buffer shaft in a non-rotating state in the axial direction of the buffer shaft, and the piston bolt An outer circumferential side and said cylindrical body constituted by a bolted, or shaft of the damper cylinder according to the rotation direction of the door opening, so that the bolts can move in the piston oil chamber. Further, the double-opening door closer according to the present invention is characterized in that the bolt combination of the cylinder side and the piston bolt is a screw formed on a cylinder inner surface provided on the cylinder side and a bolt formed on a periphery of the piston bolt through a screw. combined. The double-opening door closer according to the present invention is characterized in that the piston bolt is formed in a cylindrical shape, the outer periphery of the piston bolt is spirally coupled with the inner surface of the cylinder, and the bumper shaft is non-rotating and has an oil. The form of the flow path is coupled to the upper part of the piston bolt, and a check valve capable of rapidly moving the piston bolt in the oil chamber according to the opening operation of the door is provided at the lower part of the piston bolt. Moreover, the double-opening door closer according to the present invention is characterized in that: among the buffer shaft and the piston bolt, a speed regulating rod for flow path adjustment penetrates in the axial direction of the piston bolt, and is between the speed regulating rod and the piston bolt. A flow path through which oil passes is formed. Moreover, the double-opening door closer according to the present invention is characterized in that the part of the speed governing rod penetrating the piston bolt is formed into a cone shape, and the distance between the speed governing rod and the piston bolt can be adjusted by moving the speed governing rod in the axial direction. Flow path area. In addition, the double-opening door closer according to the present invention is characterized in that: the speed governing rod is screw-connected to the door frame side fixing member, and the speed governing rod can be made in the axial direction by -10- 200417671 rotation of the speed governing rod. Move up and adjust the area of the flow path between it and the piston bolt. Further, the double-opening door closer according to the present invention is characterized in that the rotation of the speed-adjusting rod is made possible by the speed-adjusting gear. The double-opening door closer according to the present invention is characterized in that the elastic body is a coil spring that penetrates and arranges a buffer shaft between a gap formed by the cylinder and the buffer shaft.

Moreover, the double-opening door closer according to the present invention is characterized in that the door-frame-side fixing member and the outer wheel are provided with the door opening and closing action on one side, and the door-side fixing member and the inner wheel are provided. It is integrated, and as the door is opened and closed on the other side, an integrated stopper is formed between the door frame-side fixing member and the inner wheel, and the door-side fixing member and the outer wheel.

According to the present invention, the double-opening door closer according to the present invention is characterized in that: the stopper device enables a rotating body that can be rotatably provided in each of the outer wheel and the inner wheel; 2. The stopping object of the joint part on the side of the door-side fixing member is switched to realize opening and closing of the inner turning action and the outer turning action to one side and the other side. According to the present invention, the double-opening door closer according to the present invention is characterized in that the stopper is formed by a rotating body that can be rotatably provided on each of the outer wheel and the inner wheel, and the outer peripheral surface of the door frame-side fixing member. A plurality of coupling portions formed by the rotating body and a plurality of coupling portions formed by the rotating body formed on the inner peripheral surface of the door-side fixing member. According to the present invention, the double-opening door closer is characterized in that: the output shaft installed in the side fixing member of the door frame-11-200417671 and the outer wheel and the inner wheel are provided with the self-closing action of the door. Free stop mechanism released in any position.

The double-opening door closer according to the present invention is characterized in that the free stop mechanism is provided with a rotating member holder arranged between the output shaft mounted on the door frame side fixing member and the outer wheel and the inner wheel, and can rotate freely. A rotating part held on the outer peripheral surface of the lower part of the output shaft in the door frame-side fixing member and fixed to the rotating part holder as described above, and the rotating part being bonded to the connecting part formed on the inner peripheral surface of the door-side fixing member In addition, with the door opening and closing action on one side, the rotating member holder and the outer wheel are integrated, and the door frame side fixing member and the inner wheel are integrated, and as the door is opened and closed on the other side An operation is performed to form an integrated stopper between the rotating member holder and the inner wheel, and the door-side fixing member and the outer wheel.

In addition, the double-opening door closer according to the present invention is characterized in that the joint portion formed on the inner peripheral surface of the door-side fixing member is formed to have a position substantially equal to or slightly larger than the rotation at a position where the door is opened and closed. The width of the diameter of the part. The double-opening door closer according to the present invention is characterized in that: the stopper is fixed to each of the rotating body provided freely in the outer wheel and the inner wheel to each of the rotating member holder side and the door side. Switching the stop object of the joint formed on one side of the component can open and close the inner wheel movement and the outer wheel movement to one side and the other side. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. -12- 200417671 (4) Embodiment A double-opening door closer CL according to this embodiment is installed on one side of door D and used as shown in FIG. 1. At this time, the lower part corresponding to the door d is rotatably supported by the door hinge Η on the other body. As shown in FIG. 2, the double-opening door closer C L is fitted with a door frame-side fixing member 1 to a shaft 5 of a conventional hinge formed on a door frame side of a door D so as not to be rotatable. Specifically, an output shaft 1 e is integrally fixed to the center of the door frame-side fixing member i, and a bolt groove hole inserted into the shaft 50 is formed in the center of the output shaft 1 e as shown in FIG. 3. 1 a, a bolt and groove shaft 50 a formed on the front end of the shaft 50 of the hinge described above is fitted in the bolt groove hole la, and both of them are joined together so as not to be rotatable. As shown in FIG. 2, a large-diameter portion 1 A and a small-diameter portion 1 B are formed on the output shaft 1 e fixed in the door frame-side fixing member, and the center of the output shaft e is formed with a later-described and The speed governing rod 2 has a threaded hole 1 b, and a freely rotating speed governing gear 3 a is installed in the hole 1 b. One end of the hole is fitted in the center hole of the speed governing rod 2 which can not rotate but can move freely up and down. At the same time, a hole% 1c in which the speed-adjusting gear 3113 that meshes with the speed-adjusting gear 3a is combined is formed in the door frame-side fixing member 1 perpendicularly to the hole 1b. In addition, a cylindrical door-side fixing member 7 is mounted on the outer circumference of the small-diameter portion 1 B of the output shaft 1 e via the bearings 4, 4 and the cover member 5. With this structure, the door-side fixing member 7 can be mounted. Fix parts on the door frame side! φ% is a structure capable of rotating with respect to the door frame-side fixing member 1. In addition, 6 in the figure is a C-shaped stopper wheel that blocks the cover member 5, 8 is a threaded hole that combines the door with the -13-200417671 door-side fixing member 7, and the threaded holes 8 are formed on the door side in an appropriate number of fixings Part 7 on. As shown in FIG. 6 (c), in the gap S formed in the cylindrical door-side fixing member 7, a cylindrical outer wheel 9 having a wall portion 9a standing on the upper side is fitted and arranged, and A cylindrical inner wheel 10 having a wall portion 10 a erected on the upper side, and a shaft portion 10 c formed on the lower portion of the inner wheel 10 is also rotatably fitted on the inner circumference of the outer wheel 9. (See Figure 6 (b)). The outer walls 9 and 10 of the upper side of each of the inner wheels 10 have outer diameters formed to have the same diameter and fitted in the above-mentioned gaps S. The wall portions 9a and 10a are formed with cutout portions 9b and 10b that hold the rotating body 1 1 (a steel ball in this example, and a roller with a circular cross section is also possible). In addition, as shown in FIG. 6 (a), As shown in the figure, a plurality of concave portions Id having a circular arc shape in the cross section fitted into the rotating body 11 are formed on the outer circumference of the large-diameter portion 1A of the output shaft le fixed to the door frame-side fixing member 1. On the inner circumference of the door-side fixing member 7, as shown in the figure, a plurality of recessed portions 7a (two portions in this example) having a circular arc shape in which the above-mentioned rotating body 11 is fitted are formed. 1 d, 7a and the rotating body 11 to form the output shaft 1 e of the door frame side fixing member 1 and the stopper of the door side fixing member 7 and the inner wheel 10, and the output shaft 1 e of the door frame side fixing member 1 and the door frame. The stopper for the side fixing member 7 and the inner wheel 10 (the stop target is switched according to the direction of opening the door). In addition, the output shaft 1 e of the door frame-side fixing member 1 is formed with a protrusion 13 that connects the wall portions 10 a and 9 a to prevent the inner wheel 10 and the outer wheel 9 from rotating. In addition, the inner circumference of the door-side fixing member 7 A projection 14 connecting the wall 14-200417671 portions 10a and 9a to rotate the inner wheel 10 and the outer wheel 9 is formed on the upper wall. In this way, when the door is in a closed state, as shown in FIG. 6 (a), the protrusions 14 of the door-side fixing member 7 and the protrusions 1 3 of the output shaft 1e of the door-frame-side fixing member 1 are screwed by a screw to be described later. The potential energy of the spring is held between the outer wheel 9 and the inner wheel 10 and the positions of the two protrusions 13 and 14 are aligned and maintained in a neutral state. As shown in FIG. 2, the upper end of the cylinder 15 is fixed to the lower portion of the outer wheel 9 by the upper moving pin 16 and is configured to be rotatable integrally with the outer wheel 9. In addition, the upper end of the bumper shaft 17 is non-rotatably mounted on the lower part of the inner wheel 10, and the bumper shaft 17 and the inner wheel 10 are integrally configured to be rotatable < || In addition, in this example, since the inner wheel 10 and the bumper shaft 17 are fixed by a zigzag connection, the bumper shaft 17 and the inner wheel 10 can be formed as a whole.

Between the inner circumference of the barrel 15 and the outer circumference of the bumper shaft 17, a coil spring 18 serving as an elastic body capable of winding the bumper shaft 17 back is arranged, and an upper end of the coil spring 18 is appropriately The fixing device is fixed on the side of the cylinder 15 described above, and the lower end of the coil spring 18 is fixed on the bumper shaft 17-7 side by a suitable fixing device. In addition, in this example, the upper end of the coil spring 18 is stopped in the spring seat 19 fitted in the bumper shaft 17 and the torsion force is accumulated in the coil spring 18 when the spring seat 19 is rotated. In the state, the fixing pin 20 from the window 15a of the cylinder 15 of the recessed portion 19a formed on the outer circumference of the spring seat 19 is fixed, and the upper end of the coil spring 18 can be fixed to the cylinder 15 accordingly. At the same time, the lower W of the coil spring 18 is combined with the cutout portion 17a of the bumper shaft 17 by this configuration. When the barrel 15 and the bumper shaft 17 are relatively rotated, A certain torsion force of -15 · 200417671 is accumulated in the coil spring 18.

A cylinder 21 is arranged in the lower portion of the cylinder 15, and the cylinder 21 and the cylinder bottom cover 22 are integrally formed by welding or the like. In addition, the cylinder bottom cover 22 is fixed to the cylinder 15 by a stopper pin 23 or the like. The lower part. A cylindrical base 24 is provided with a seal 25 or the like in a liquid-tight manner inside the front end of the cylindrical 21, and the buffer shaft 17 is disposed through the cylindrical base 24 so as to pass through. A base sleeve 24 a and a seal 26 are disposed between the bumper shaft 17 and the cylindrical base 24. In this way, the cylinder base 24 integrally fixes the cylinder 21 and the upper bumper bearing 3 4 attached to the cylinder 21 via the stopper pin 35.

An oil chamber 27 formed by the cylinder base 24 and the cylinder bottom cover 22 is formed inside the cylinder 21, and the inside of the oil chamber 27 is filled with oil. The oil chamber 27 is provided with a piston bolt 30 that divides the oil chamber 27 into an upper chamber 28 and a lower chamber 29. The piston bolt 30 is formed in a cylindrical shape. The outer circumference of the piston bolt 30 and the cylinder 21 are arranged. The inner surfaces of the piston bolts are connected by a screw. The bumper shaft 17 is coupled to the upper portion of the piston bolt 30 through a bolt groove in a non-rotating and oil flow path manner. In addition, the lower portion of the piston bolt 30 is fixed. There is a valve seat 30A, and the valve seat 30A is provided with a stop according to the opening operation of the door as shown in the figure, which can quickly move the oil from the upper chamber 28 to the lower chamber 29 when the piston bolt 30 moves upward. Check valve 3 1 (ball valve in this example). A flow path (oil escape groove) 32 communicating between the upper chamber 28 and the lower chamber 29 is formed between the piston bolt 30 and the bumper shaft 17 as shown in FIG. 5. The above-mentioned piston bolt 3 G and the buffer shaft 丨 7 are combined together by a saw tooth, and the piston bolt 30 moves up and down along the saw tooth. With this configuration, for example, when -16-200417671 buffer shaft 17 is in a non-rotating state, if the cylinder 15 is rotated, the cylinder 21 integrated with the cylinder 15 is rotated, and The internally spirally connected piston bolt 30 moves upward in a non-rotating state by rotation of the cylinder 21. In addition, if the cylinder 2 1 integrated with the cylinder 15 is in a non-rotating state and the bumper shaft 17 is rotated, the piston bolt 30 connected to the bumper shaft i 7 by a serration will become 70% of the bumper shaft 17. By integrally rotating, the piston bolt 3 screwed in the cylinder 21 moves the bumper shaft 17 which is serrated together upward. In addition, in the central portion of the valve seat 30A of the piston bolt 30, a speed regulating rod 2 is penetrated, and a portion of the speed regulating rod 2 penetrating the valve seat 3 0 A of the piston bolt 30 is tapered (formed in this example) It has a tapered shape with a decreasing diameter from the lower side to the upper side.) Thus, the speed regulating gear 3 b provided on one side of the door frame side fixing member 1 is rotated, and the speed regulating rod 2 is rotated through the speed regulating gear 3 a provided inside the output shaft 1 e, so that the door frame side fixing member can be rotated. The spirally coupled speed governor rod 2 on the output shaft 1 e of 1 moves up and down relative to the piston bolt 3. Therefore, the gap between the through hole formed in the piston bolt 30 and the speed governor rod 2 can be passed through the speed governor rod. The tapered part of 2 can be adjusted, and the flow path area of the gap can also be adjusted by%. In addition, a seal 33 is provided between the speed governor 2 and the buffer shaft 17 to prevent the oil in the oil chamber 27 from flowing into the hole i b. In addition, the up-and-down movement of the speed control stick 2 is not limited to the spiral method, and other methods such as manual lifting adjustment may also be used. In addition, 36 and 37 are seals and protectors for sealing the outer circumference of the cylinder 21 and the outer circumference of the piston bolt 30. 3 8 is the shaft stop wheel of the buffer shaft 1 7. The operation of the double-opening door closer with the above structure will be described below. -17- 200417671 When the door is closed, the inner wheel 10 and the outer wheel 9 are at the 0 o'clock rest position shown in Figure 7 (b).

When the door D is opened to the right from this state, the door-side fixing member 7 fixed to the door D is rotated to the right (see FIG. 7 (c)). When the door-side fixing member 7 is rotated in the right direction, the protrusions 14 formed on the door-side fixing member 7 are rotated toward the right while pressing the wall portion 10a of the inner wheel 10. At this time, in order to keep the rotating body 1 1 a held on the cutout portion 1 Ob of the inner wheel 10-while remaining in the recessed portion 7 a formed on the door-side fixing member 7, The outer circumference of the output shaft 1 e moves, and the door frame-side fixing member 7 and the inner wheel 10 move integrally to the right. On the other hand, on the outer wheel 9 side, the protrusion 13 of the output shaft 1 e of the door frame side fixing member 1 contacts the wall portion 9 a of the outer wheel 9 to prevent rotation, and at the same time, the rotating body 1 lb is formed toward the door frame side fixing member 1. The recessed portion 1 d on the large-diameter portion 1 A of the output shaft 1 e is moved and fitted therein, so the door-side fixing member 7 can move in such a manner that its rotation on the rotating body 1 1 b is not prevented. At this time, the bumper shaft 17 that is fixed to the inner wheel 10 is also rotated to the right as shown in the opening action in FIG. 8 and the coil spring 18 is tightened, and the potential energy is stored in the coil spring 1 8 in. In addition, at the same time, the rotation of the bumper shaft 17 causes the piston bolt 30 to rotate to the right. Due to the rotation of the piston bolt 30, the outer circumference of the piston bolt 30 and the inner surface of the cylinder 21 are screwed together, so only the piston bolt 30 moves upward by the action of the screw. Since the piston bolt 30 is moved upward, the check valve 31 is opened, and the oil in the upper chamber 28 is moved through the check valve 31 to the lower chamber 29, so that the brake does not function when the door d is opened. However, since the door D — potential energy is accumulated • 18- 200417671 is opened in the coil spring 18 ', so if it is released from the open state of the door D, the door D is closed due to the role of the coil spring 18 that stores potential energy Direction rotation. At this time, as shown in the opening and closing action in FIG. 8, the bumper shaft 17 is rotated in the opposite direction to the above, and the check valve is closed while the piston bolt 30 is moved downward, thereby coming out of the lower chamber 29. The oil can only flow through the gap between the governor rod and the through hole of the valve seat 30 A of the piston bolt 30. At this time, since the door-side fixing member 7 is integrated with the inner wheel 10, it cannot be separated by the inertia of the door D. Therefore, at this time, the resistance to the oil flowing through the gap can exert a braking effect on the closing direction of the door D, and the door D can be slowly closed. In addition, this closing speed rotates the speed-adjusting gear wheels 3a, 3b that adjust the speed of the speed-adjusting rod 2 to adjust the vertical movement gap, so that the closing speed of the door D can be adjusted.

In addition, when the door D is opened to the left from the closed state, the door D and the door-side fixing member 7 fixed to the door D also rotate in the left direction (see FIG. 7 (a)). Due to the leftward rotation of the door-side fixing member 7, the protrusions 14 formed on the side of the door-side fixing member 7 press the wall portion 9a of the outer wheel 9 while rotating the outer wheel 9 to the left. At this time, the rotating body 1 1 b held on the cutout portion 9 b of the outer wheel 9 is retained in the recessed portion 7 a formed on the door-side fixing member 7, and the outer periphery of the output shaft 1 e of the door-frame-side fixing member 1 is simultaneously moved. To this end, the door-side fixing member 7 is integrated with the outer wheel 9 and moves to the left. On the other hand, the protrusion 13 of the output shaft le of the door frame-side fixing member 1 contacts the wall portion 10a of the inner wheel 10 on the side of the inner wheel 10-side, thereby preventing rotation, and at the same time the rotating body 1 1 a moves to The recess Id formed on the large-diameter portion 1A of the output shaft 1 e of the door frame-side fixing member 1 is fitted there and fitted there so that the rotation of the door-side fixing member 7 in the rotating body 1 1 a cannot be changed. Stop moving. At this time, the cylindrical body 15 which is fixed integrally with the outer wheel 9 is also moved to the left as shown in the opening action in FIG. 9, thereby tightening the coil spring 18 ′ and accumulating potential energy in the coil spring 18. At the same time, the cylinder 21 integrated with the cylinder 15 also rotates to the left, so the piston bolt 30 screwed together on the inner peripheral surface of the cylinder 21 is in a non-rotating state, so only the piston bolt 30 Move upwards under the action of a spiral. Since the piston bolt 30 moves upward, the check valve 31 opens, and the oil in the upper chamber 28 moves through the check valve 31 to the lower chamber 29. Therefore, the braking effect is not exerted when the door D is opened. However, since the door D is opened while the potential energy is accumulated in the coil spring 18, if it is released from the open state of the door D at this time, the door D rotates in the closing direction due to the effect of the coil spring 18 that has accumulated potential energy. . At this time, as shown in the opening and closing action of FIG. 9, the outer wheel 9 rotates in a direction opposite to the direction described above, and the cylinder 5 also rotates in the opposite direction and the piston bolt 30 moves downward while the check valve 31 is closed, so The oil coming out of the lower chamber 29 can be moved only through the gap between the governor rod 2 and the through hole of the valve seat 30 A of the piston bolt 30. At this time, since the door-side fixing member 7 is integrated with the outer wheel 9, it cannot be separated by the inertia of the door. Therefore, at this time, the resistance of the oil flowing through the gap can exert a braking effect on the door D in the closing direction, thereby slowly closing the door D. In addition, the closing speed can be adjusted by adjusting the speed adjustment gears 3a, 3b for adjusting the speed of the speed control stick 2, and the vertical movement gap, so the closing speed of the door D can also be adjusted. As shown above, 'the above-mentioned embodiment, whether it is about -20-200417671 action on one side or the other side', when the door is opened, potential energy is accumulated in the elastic body, and when the door is closed, the potential energy accumulated in the elastic body is used The door is closed, and the braking force is applied to the door by the movement resistance of the oil flowing to the upper and lower chambers, so that the door can be closed slowly. In addition, in the embodiment described in detail above, as long as the coil spring disposed between the cylinder and the bumper shaft is an elastic body capable of achieving the same function, other different forms can be adopted. Hereinafter, a double-opening door closer in which the free-stop structure is combined in the double-opening door closer will be described with reference to the drawings. This embodiment is characterized in that a free-stop structure is combined in the upper part of the double-opening door closer. Therefore, since the basic structure of the door closer is the same as the above embodiment, the free stop junction is mainly used here.

Structure to explain. In addition, the same symbols are used for the same components as those of the above-mentioned embodiment. Fig. 10 is an upper cross-sectional view of a double-opening door closer in which the free-stop structure is combined (corresponding to the diagram of the upper section of Fig. 2 in the above embodiment), and Fig. 11 is a state in which the door-side fixing member is removed. Exploded explanatory view of each component of the free-stop structure (output shaft, rotating component holder (hereinafter referred to as roller holder), inner wheel, outer wheel), Fig. 12 is a sectional view and a side view of the roller holder The top view, the bottom view, and FIG. 13 are sectional views of the door-side fixing member installation on the CC section in FIG. 11 and FIG. 14 is the sectional view of the door-side fixing member installation on the DD section in FIG. 11. In FIG. 10, an output shaft 60 is integrally fixed to the center of the door frame-side fixing member 1. A plug slot 60 a into which the shaft 50 is inserted is formed in the center of the output shaft 60, and the plug slot 60 a is fitted into the plug slot 60 a. The bolt groove shaft 50a on the front end of the shaft 50 is formed, and the two are combined so as not to rotate. In addition, 6 7 and 6 8 in the figure are bushes provided in the rotating portion, respectively, and they are formed of, for example, resin-based -21-200417671 and sintered oil-containing materials. However, other materials with the same function can be used. As shown in FIG. 11, a roller groove (combination portion) 62 for connecting a rotating member (hereinafter referred to as a roller) 6 1 is formed on an outer circumferential surface of a lower portion of the output shaft 60 fixed by the door frame-side fixing member 1. The roller grooves 62 are formed at two positions separated by 180 degrees (refer to FIG. 13 described later).

The roller holder 63 rotatably fitted in the output shaft 60 via the bushing 67 takes a section formed by a large-diameter portion 63 a and a small-diameter portion 6 3 b as shown in FIGS. 11 and 12. It is an inverted hat-shaped structure.

The roller holder 63 is formed with a through hole 64 into which the speed governing rod 2 is inserted at the center, and the roller 6 is held in the upper half of the large-diameter portion 63a as shown in FIGS. 11 and 12. The U-shaped through grooves 6 3 c are formed at two 180-degree intervals, and a fitting is formed in the lower half of the large-diameter portion 6 3 a and held by the inner wheel 1 0 and The arc-shaped recessed portion 63d of the rotating body 11 in the cutout portions 10b and 9b formed in the outer wheel 9. The recessed portion 6 3 d corresponds to the recessed portion Id formed in the output shaft 1 e of the above-mentioned embodiment on the outer circumference of the output shaft 60 and the roller holder 63 and the inner wheel 10 and the outer wheel 9 as shown in FIG. 10. As shown, the door-side fixing member 7 is arranged. In addition, as shown in FIG. 11 and FIG. 13 (CC cross-sectional view in FIG. 11), among the inner peripheral surfaces of the door-side fixing member 7, the outer peripheral surface of the lower portion of the output shaft with respect to the 0-point rest position, The roller grooves 62 formed above are formed at two positions at 180 degrees apart, and grooves 65 are formed as joint portions having a diameter approximately twice that of the rollers 6 1. The size of the groove 65 may be approximately the diameter of the roller 61 according to the opening angle of the door -22 · 200417671. In addition, the groove 65 is not necessarily formed at two places, and if one is 61, it may be formed at one place. In addition, the shape of the groove 65 may be a circle described in the above embodiment of the fitting roller 61. Curved recess.

In addition, the roller retainer 63 corresponding to the inner wheel 10 and the outer wheel 9 is formed with an arc-shaped convex portion corresponding to the arc-shaped concave portion 1 d formed on the large-diameter portion 1A of the output shaft le of the above embodiment. 63d, at the same time, protrusions 6 6 corresponding to the protrusions 13 formed on the output shaft 1 e are also formed. In this way, the roller retainer 6 3, the inner wheel 10, the outer wheel 9, and the door-side fixing member 7 have the same combined structure as that of the above-mentioned embodiment as shown in Fig. 14. The operations of the roller holder 63, the inner wheel 10, the outer wheel 9, and the door-side fixing member 7 are the same as those of the above-mentioned embodiment, and detailed descriptions thereof will be omitted here. The effect of the above free stop structure will now be described with reference to FIG. 15.

In FIG. 15 (b), when the door is closed, the inner wheel 10, the outer wheel 9, and the roller holder 63 are located at the 0-point rest position (corresponding to FIG. 7 (b) of the above embodiment). The column holder 63, the output shaft 60, and the door-side fixing member 7 are also located at the 0-point rest position. From this state, as shown in FIG. 15 (0), when the door D is opened to the right, the door-side fixing member 7 fixed to the door D rotates to the right, due to the right-side rotation of the door-side fixing member 7. As described in the above embodiment, the door D is opened while the potential energy is accumulated in the coil spring 18, so if it is released from the state in which the door is opened, it is under the action of the coil spring 18 that has accumulated potential energy. The door D rotates in the direction of closing the door. At this time, due to the braking effect, the door D is slowly closed. -23- 200417671 In addition, in the free stop mechanism, first, at the 0-point stationary position where the door D is closed, it is maintained in the roll position. The roller 61 on the column holder 63 is combined with the roller groove 62 formed on the output shaft 60. As a result, if the door D is opened by a shake, the door D rotates on the side of the free stop mechanism. The door-side fixing member 7 rotates in the same direction. At this time, the roller holder 63 is integrated with the output shaft 60 by the roller 6 1 and is in a non-rotating state. In this way, the inner wheel 10 or the outer wheel 9 is combined An elastic force is accumulated in the coil spring 18 similarly to the above-mentioned embodiment. If you lower the door D and release it on the way, the door D will return to its original position by the elastic force of the coil spring 18. _ However, if you open the door D 90 degrees (refer to Figure 15 (〇), at this time, the roller holder 63 The roller 61 held in the middle moves from the roller groove 62 formed on the side of the output shaft 60 to a large-sized groove 65 formed on the inner peripheral surface of the door-side fixing member 7, and the roller 61 moves toward the output shaft 60. The outer peripheral surface of the roller is released by the combination of the output shaft 60 and the roller 61 of the roller holder 63, and then the roller holder 63 and the door-side fixing member 7 are integrated by the roller 61. As a result, When the elastic force accumulated in the coil spring 18 is maintained, the door D-side fixing member 7 can rotate freely on the outer circumference of the output shaft 60 in a state where the roller 61 is accommodated in the groove 65. In addition, if the rotation of the door-side fixing member 7 is stopped, the door D can maintain the stopped state at this position. In this example, even if the door D is opened further than 90 degrees,

After that, the door D can be stopped at an arbitrary position at a desired position. In addition, when the door D is closed, the door D can be automatically closed by the elastic force of the coil spring 18 when the door D returns within 90 degrees. At this time, the braking action described in the above embodiment works, so that the action of the sudden closing of the door D-24-200417671 can be avoided. In addition, when the door is opened at the opposite side, if the door D is opened 90 degrees' as shown in Fig. 15 (a), a free stop state of the same permanent operation as in Fig. 15 (b) can be obtained. In this way, in the present embodiment, the grooves 65 formed on the inner circumferential surface of the door-side fixing member 7 have a width separated from the left to the right by the same length (approximately the diameter of the roller 61) around the 0 point. Therefore, the door d can be in a free stop state from the point when the door d is opened at 90 degrees from the left and right. However, the groove 71 formed on the inner circumferential surface of the door-side fixing member 7 as shown in Fig. 16 (b) is freely stopped in a state where it is opened at 90 degrees on one side. When the roller 61 is fitted into the arc-shaped recess at the α-degree position, as shown in Figure 16 (c), when the door D is opened to the right, the door D can be opened from the point when it is opened at 90 degrees. Get free stop. However, when door D is opened on the opposite side, as shown in Figure 6 (a), if it is not opened to (90 + 200 degrees), the free stop state cannot be obtained. In this way, the door side is fixed When the groove 7 1 formed on the inner circumferential surface of the member 7 is formed at a position that is shifted by α degrees from the center of 0 point (for example, in the above-mentioned conventional technology, refer to Japanese Patent Application Laid-Open No. 10-2 2 0 1 〇2 ), According to the opening angle of left and right to get the free stop state is not the same, it will not be suitable for occasions such as double-opening door closers. However, even double-opening door closers, in the structure of the building and When the double-opening angle is different, a free-stop structure as shown in Fig. 16 can also be adopted. With the above-mentioned embodiment, a roller holder and rollers can be added to the double-opening door closer. The free-stop structure is suitable for miniaturization due to its simple structure. -25- 200417671 In addition, the above embodiments are merely exemplary, and the present invention can still be used without departing from the spirit and main features of the present invention. Other embodiments of different forms and should not be applied to this interpretation limiting.

As explained in detail above, the present invention has the following excellent effects. Since the hydraulic brake structure is installed in the spring-type door closer, the device can be miniaturized and its structure can be simplified. As a result, the door can be double-opened. Type door closer, which makes construction easy, and is not affected by rain and cleaning agents during cleaning. Because it can be opened from either left or right, the range of use is expanded. In addition, since the free stop structure is installed in the present invention, the door opening angle can continuously perform the stop function from a position of more than 90 degrees left and right, and because The groove width is large, so it can play a free stop function at 90 degrees in any direction. (5) Brief description of the drawings FIG. 1 is a front view and a side view of the double-opening door closer according to this embodiment in a state of being installed on the door;

Fig. 2 is a sectional view of the double-opening door closer; Fig. 3 is a top view of the double-opening door closer; Fig. 4 is an A_A sectional view of the double-opening door closer shown in Fig. 2; B-B sectional view of the double-opening door closer shown in the figure; FIG. 6 is an assembly drawing, parts drawing and sectional view of the outer wheel and the inner wheel; FIG. 7 is an action of the outer wheel and the inner wheel when the double-opening door closer is opened and closed Fig. 8 is a sectional view of the hydraulic mechanism in the right opening direction of the double-opening door closer; -26- 200417671 Fig. 9 is a sectional view of the hydraulic mechanism in the left opening direction of the double-opening door closer; Fig. 10 is a combination Upper sectional view of a double-opening door closer with a free-stop structure; Figure 11 is an exploded explanatory view of each component (output shaft, roller holder, inner wheel, outer wheel) of the free-stop structure except for the state of the door-side fixed components; Fig. 12 is a sectional view, a side view, a top view, and a bottom view of the roller cage; Fig. 13 is a CC-side fixing member assembled on the CC section of Fig. 11

FIG. 14 is a cross-sectional view of the door-side fixing member assembled on the DD section in FIG. 11; FIG. 15 is an operation explanatory diagram of the free-stop structure; and FIG. 16 is an operation explanatory diagram of the other free-stop structure Figure 17 is a sectional view of the structure of an existing spring-type door closer. Description of main symbols

1 Door frame side fixing part 1 A large diameter part 1 B small diameter part la bolt groove Id recess 1 e output shaft 2 speed governor 3a speed governing gear-27- 200417671 3b 4 5 7 7a 8 9 9 a 9b, 10b 10 10a 1 1 (1 1 a, lib) 13 14 1 5 16 17 17a 18 19 20 2 1 22 23 Speed control gear bearing cover member Door-side fixing member Recessed part Threaded hole Outer wheel wall part Notch part Inner wheel wall part Rotating body protrusion > feAr body stop pin buffer shaft cutout coil spring spring seat fixing pin cylinder bottom cover stop pin

-28- 200417671 24 cylindrical base 25 seal 26 seal 27 oil chamber 28 upper chamber 29 lower chamber 30 piston bolt 30A valve seat 3 1 check valve 32 flow path 34 bumper bearing 5 0, shaft 50a bolt groove shaft 60 Output shaft 6 1 Roller (rotary part) 62 Roller groove joint) (63 Roller holding part (rotary part holder) 63a Large diameter part 63b Small diameter part 63c Through groove 63d Recessed part 64 Through groove 65 groove (combined Part) 66 protrusion m% -29- 200417671 67, 68 bushing 7 1 groove CL door closer D door H hinge S gap

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Claims (1)

200417671 Patent application scope: 1. A double-opening door closer, which is composed of a door frame side fixing member fixed in the door frame side and a door side fixing member which can be rotatably installed in the door frame side fixing member; It is characterized in that by the output shaft installed in the above door frame side fixing member, when the door is opened to one side, an outer wheel that rotates in the opening direction together with the opening action of the door, and when the door is opened to the other side, The inner wheels that rotate in the opening direction together with the opening operation of the door are each rotatably installed in the door-side fixing member; a cylinder is installed in the outer wheel, and a buffer shaft inserted into the cylinder is installed in the inner wheel. ; An elastic body that accumulates potential energy is arranged according to the relative rotation between the buffer shaft and the cylinder, and the buffer shaft and the cylinder form an oil chamber together. The piston bolt is mounted on the buffer shaft in a free and non-rotating state in the axial direction, and the outer periphery of the piston bolt and the cylinder side are combined by bolts, and the buffer shaft or the cylinder is made according to the direction in which the door is opened. The body rotates so that the piston bolt can move in the oil chamber. 2 · The double-opening door closer according to item 1 of the patent application range, wherein the bolt combination of the cylinder side and the piston bolt is made of a bolt formed on the inner surface of the cylinder provided on the cylinder side and a bolt formed on the periphery of the piston bolt. Spiral. 3. If the double-opening door closer according to item 2 of the patent application, wherein the piston bolt is made into a cylindrical shape, the outer periphery of the piston bolt is screwed with the inner surface of the cylinder, and the buffer shaft is non-rotating and has an oil. The shape of the flow path -31-200417671 is coupled to the upper part of the piston bolt, and a check valve is provided at the lower part of the piston bolt to allow the piston bolt to move rapidly in the oil chamber according to the opening operation of the door. 4. The double-opening door closer according to item 3 of the patent application scope, wherein in the buffer shaft and the piston bolt, the speed regulating rod for flow path adjustment penetrates the axial direction of the piston bolt, and the speed regulating rod and the piston bolt There is a flow path through which the oil passes. 5. If the double-opening door closer according to item 4 of the patent application scope, wherein the part of the speed governing rod penetrating the piston bolt is formed into a cone shape, the distance between the speed governing rod and the piston bolt can be adjusted according to the movement of the speed governing rod in the axial direction Flow path area. 6 · If the double-opening door closer of item 4 or 5 of the patent application scope, wherein the above-mentioned speed regulating rod is spirally installed in the fixing member on the side of the door frame, the rotation of the speed regulating rod can make the speed regulating rod move in the axial direction and Adjust the area of the flow path to the piston bolt. 7. The double-opening door closer according to item 6 of the patent application, wherein the rotation of the speed control rod is based on the speed adjustment gear to enable it to rotate. 8. The double-opening door closer according to any one of claims 1 to 7, wherein the elastic body is a coil spring that penetrates and arranges a gap formed between the cylinder body and the buffer shaft through the buffer shaft. 9 · The double-opening door closer according to any of claims 1 to 8 in the scope of patent application, which is provided with the door opening and closing action on one side, between the door frame side fixing member and the outer wheel, and the door side The fixing member and the inner wheel are integrated, and as the door is opened and closed on the other side, 'the door frame-side fixing member and the inner wheel' and the door-side fixing-32-200417671 are integrated with the outer wheel. Stop device. 1 〇. For the double-opening door closer according to item 9 of the scope of patent application, wherein the stopper is a screw that allows the outer wheel and the inner wheel to be freely rotatable, respectively, and switches the pair of fixed members formed on the door frame side, The stop object of the joint part on the side of the above 1 @ fixed part realizes the opening and closing of the inner wheel action and the # @ action as one side and the other side. 1 1. The double-opening door closer according to item 9 of the patent application scope, wherein the stop device is formed by a rotation 11 that can be rotatably provided on the outer wheel and the inner wheel, respectively, and the outer peripheral surface of the fixing member on the side of the door frame A plurality of coupling portions formed by the rotating body and a plurality of coupling portions formed by the rotating body formed on the inner peripheral surface of the door-side fixing member. 1 2. A double-opening door closer, which is characterized in that the double-opening door closer according to any one of claims 1 to 8 has an output shaft installed in the fixed member on the side of the door frame, and the outer wheel and A free stop mechanism is provided between the inner wheels to release the self-closing action of the door at any position. 13. If the double-opening door closer according to item 12 of the patent application scope, wherein the free-stop mechanism is provided with an output shaft installed on a fixed member on the side of the door frame and a rotating component holder arranged between the outer wheel and the inner wheel, The joint formed on the outer peripheral surface of the lower part of the output shaft in the door frame-side fixing member and held on the rotating member holder freely rotatably, and the joint formed on the inner peripheral surface of the door-side fixing member. The rotating member is also provided with the door opening and closing action on one side, so that the rotating member holder and the outer wheel are integrated, and the door frame side fixing member and the inner wheel are integrated into the door. In the opening and closing operation on the other side, an integrated stopper is formed between the rotating member holder and the inner wheel, and the door-side fixing member and the outer wheel. 14. The double-opening door closer according to item 13 of the scope of patent application, wherein the joint formed on the inner peripheral surface of the door-side fixing member is formed to have a position equal to or slightly larger than the rotation at the position of the opening and closing angle of the door. The width of the diameter of the part. 15. If the double-opening door closer according to item 13 or 14 of the scope of the patent application, the above-mentioned stopper is a rotating body which is arranged to rotate freely on the outer wheel and the inner wheel, respectively, and switches between the rotating member holder and the door respectively. The stopper object of the joint formed on one side of the side fixing member can open and close the inner wheel operation and the outer wheel operation to one side and the other side. -34-