JP2000328827A - Free door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a free door used for a variety of application by supporting the end of the door by a double shaft type hinge, always urging it in the closing direction by a closer, and providing a door lock on the open end. SOLUTION: The end of a door 2 is supported by double shaft type hinges 3, 3, and rotatably provided in the indoor side or the outdoor side. The door 2 is always urged by a closer 4 burying a cylinder body part in the inside of the door 2 in the closing direction. In addition, a door lock 5 is provided on the open end side of the door 2, which can be surely locked during closing, and unlocking opening operation is performed by the operation of a handle 6. A free door 1 by such constitution can be applied to various use including a weight door used for the entrance of a person.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door which is rotatably supported at one end by an opening of a building and turns to open and close the opening. Thus, the present invention relates to a so-called free door.

[0002]

2. Description of the Related Art Conventionally, a free door uses a floor hinge A shown in FIG. 9a, a free door using a single-shaft free hinge B shown in FIG. 9b, and a double-shaft free hinge shown in FIG. 9c. Hinge C
There is one that uses.

[0003]

However, in the above-mentioned conventional free door, first of all, the floor hinge can be applied to a heavy door while the force for closing the door is not only a braking force but also a heavy door. As it is expensive and must be buried on the floor and requires a great deal of work, it is used for the main entrance facing the outside of the building,
The door inside the building was unsuitable. Secondly, since the force to close the door is not braked in the single-shaft free hinge, the door is closed with the force of the free hinge after opening the door, so when multiple people enter the room, etc. It was not suitable for the entrance door for people to enter and exit because it was very dangerous for those who followed. Third, if a double-shaft free hinge is used for a heavy door, when the door is opened, the axis of the free hinge will shift due to the weight of the door and the door will tilt, and the lower part of the door will hit the floor. In addition to touching the door and not moving, the door and floor were damaged. Therefore, it can only be used for lightweight doors used for furniture and the like. And when using a double-shaft hinge, as a locking device for the open end of the door, the structure is simple and small, so as not to make the door for furniture as heavy as possible,
For example, a triangular latch called a magnet catch or a Gombe latch can only be used to simply lock the door, and those having a handle and a locking device like a door lock are themselves heavy, Since the weight of the entire door increased, it could not be used. Also, with a double-shaft free hinge, no closing force could be applied to the door.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. Even if the door is a heavy door used for a person's entrance, it is supported by a double-shaft free hinge. The door can be opened both inside and outside the door, and the door can be closed at the speed braked by the closer, and the door can be securely closed by the door lock provided on the open end side of the door. An object of the present invention is to provide a free door which can be locked and which can be unlocked by operating a handle to open the door.

[0005]

According to a first aspect of the present invention, there is provided a free door, wherein the end of the door is supported by a double-shaft free hinge so that the door is rotatable on both the indoor side and the outdoor side. The door is always urged in the closing direction by a closer, and the door is securely locked in the closed state on the open end side of the door when closed, and is unlocked and opened by operating the handle. The door lock is provided, and this structure is used as means for solving the above-mentioned conventional problem.

In the free door according to the second aspect of the present invention, the door lock is always urged in a retreating direction into a lock case attached to the door main body and is retreated by operating a handle. A door provided with a magnetic body or a magnet provided on at least a part of the lock rod and a magnet or a magnetic body provided on a frame-side receiving member facing the magnetic body or the magnet when the door is closed, When the lock rod is closed, the lock rod is protruded by the magnetic attraction force of the magnetic material or the magnetism of the lock rod to overcome the backward biasing force of the lock rod, and the lock rod is projected to engage with the engagement hole of the receiving member to lock. And

According to a third aspect of the present invention, in the free door, the closer has a cylinder main body embedded in the door and substantially at the center in the thickness direction of the door. A rod is provided, which is braked by and retracts, and the tip of the rod is connected to the door via a link.

[0008]

In the free door according to the first aspect of the present invention, since the above-mentioned structure is employed, even if the door is a heavy door through which a person can enter and exit, the end of the door is supported by a biaxial free hinge. At the same time, the door is always urged by the closer in the closing direction so that the door can be opened to both the indoor side and the outdoor side, and the axis of the double-shaft free hinge does not shift when opened. Therefore, it does not lean and closes at the speed braked by the closer after opening. In addition, since a door lock can be used on the open end side of the door, the door can be securely locked in the closed state, and the door can be unlocked and opened by operating the handle.

In the free door according to the second aspect of the present invention, the lock is configured as described above, so that when the door is opened, the lock rod of the door lock retreats from its maximum protruding state into the lock case. Is projected in the state of being completely closed and is engaged with the receiving hole of the receiving member to be locked, so that immediately before the door is closed, the locking rod does not slide on the receiving member. Or, even if it slides in contact, the amount of protrusion of the lock rod is small,
Since the frictional resistance between the locking rod and the frame or the receiving member is extremely small, the door can be closed even by a small urging force of the closer.

In the free door according to the third aspect of the present invention, since the closer is buried inside the door, it is possible to provide a free door having an excellent appearance as a whole.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 to 8 show an embodiment of a free door according to the present invention, and FIG. 9 shows a conventional free door. 1 to 4
As shown in FIG. 1, the free door 1 has one end of the door 2 held on a frame W by a double hinge type free hinge 3. As shown in FIG. The free hinge 3 has a conventionally known configuration. When the door 2 is opened to the indoor side, as shown in FIGS. 3 and 5, the door pivots around one shaft 31 of the free hinge 3 as a fulcrum. When the door is opened to the outside, the door rotates about the other shaft 32 as a fulcrum as shown in FIGS.

Reference numeral 4 denotes a conventionally known closer buried inside the door 2 at a substantially central portion in the thickness direction of the door. The cylinder body 41 is fixed to the door 2 and the cylinder body 41 is fixed to the door 2.
One end of a link 43 is rotatably supported by a shaft 44 at the distal end of a rod 42 housed therein so as to be freely retractable. It is pivotally supported at. And the mounting plate 45
Is fixed to the frame W with screws, so that the closer 4 is connected and fixed to the door 2 and the frame W. A spring, braking oil and high-pressure gas are sealed in the cylinder body 41 of the closer 4 (not shown).
Is biased in the direction of retracting into the cylinder body 41, that is, in the direction of closing the door. When the door 2 is opened, the rod 41 projects against the urging force of the spring, and the opening force of the door 2 is released. Then, the door 2 is closed at the braked speed by the action of the biasing force of the spring and the braking oil or the high-pressure gas.

As described above, since the door 2 is always urged in the closing direction by the force of the closer 4, even if the door 2 is heavy, when the door 2 is opened, the double-shaft free is opened. The pivot shaft of the hinge 3 is not shifted as in the related art, and the door 2 does not tilt. That is, as shown in FIG. 5, when the door 2 is opened to the indoor side, the door pivots about one axis 31 of the double hinge 3 as a pivot axis. The divided part (not shown) of the driving shaft 31 was shifted toward the indoor side due to the weight of the door 2 and the door 2 was inclined. However, in the present invention, since the door is urged in the closing direction by the closer 4, the shaft 31 of the free hinge 3 does not come off, so that the door does not tilt.

As shown in FIG. 6, when the door 2 is opened to the outside of the room, the door is rotated around the other shaft 32 of the free hinge 3 as a rotation axis. The door 2 does not tilt. Further, by using a door lock 5 using a heavy handle or the like on the open end side of the door 2,
When the door 2 is opened, the door does not tilt even if the total weight of the door becomes extremely large.

Reference numeral 5 denotes a conventionally known door lock attached to the open end side of the door 2 according to, for example, the applicant's invention and disclosed in Japanese Patent Application Laid-Open No. 11-81776, 6 is a handle for operation, and 7 is a handle for operation. This is a receiving member attached to the frame W, and details are shown in FIGS. Reference numeral 8 denotes a lock rod which is provided in the lock case 51 of the door lock 5 so as to be freely retractable. It is pivotally supported. The upper and lower frames 83 and 84 are made of a magnetic material. A spring 52 is provided on the front side between the lock case 51 and a spring hooking portion 85 formed on the frame 84 of the lock rod 8, and constantly biases the lock rod 8 in the backward direction. Reference numeral 53 denotes a spring provided on the rear side between the lock case 51 and the spring hook portion 85 of the lock rod 8. The spring 53 prevents the lock rod 8 from retreating by the spring 52 to prevent further retreat. I have.

Reference numeral 7 denotes a receiving member attached to the frame W,
A receiving hole 72 with which the locking rod 8 is engaged is formed.
A magnet 71 is provided at the bottom of the lock rod 8, and when the door 2 is completely closed, a frame 83 made of a magnetic material of the lock rod 8 is provided.
84 is attracted by the magnet 71, and the lock rod 8 projects by overcoming the backward biasing force of the spring 52. As shown in FIGS.
The lock rod 8 fits into the receiving hole 72 of the receiving member 7. In this state, the center of the shaft 82 of the roller 81 of the lock rod 8 is located on the frame W side from the horizontal direction of the entrance 73 of the receiving hole 72, so that the door 2
Even if is pushed inward or outward, no retraction force acts on the roller 81 in the direction of the lock case 51, and the lock rod does not retreat. That is, even if a side pressure simply acts on the door such as wind pressure, the lock rod 8 does not retreat and the door 2 is in a locked state in which the door 2 is not opened.

Reference numeral 9 denotes a hub rotatably supported by a lock case 51. A shaft 61 of the handle 6 is inserted into a square hole formed at the center of the rotation shaft. Rod 8
The engaging portions 86 formed at the rear ends of the frames 83 and 84 are engaged. When the hub 9 is rotated by the rotation of the handle 6, the operating portion 91 pushes the engaging portion 86 of the locking rod 8, and the magnet 71 and the locking rod 8 provided on the receiving member 7 are moved. , The locking rod 8 is retracted to unlock the door, and the door can be opened. The hub 93 is urged in the counterclockwise direction in FIG. 8 by a spring 93 being hung on one end 92 of the hub 9.

After the door is opened by rotating the lock rod 8 by rotating the handle 6 and releasing the door, the hand is released from the handle 6.
The hub 9 returns to the original state in FIG. 8 by the urging force of the spring 93. On the other hand, the lock rod 8 is retracted by the urging force of the spring 52, and a spring hook 85 provided on the frame 84 of the lock rod 8 is provided.
Abuts against a spring 53 provided behind and stops. (FIGS. 7 and 8
In this state, since the center position of the shaft 82 of the roller 81 of the lock rod 8 is located closer to the door than the horizontal line of the entrance 73 of the receiving hole 72 of the receiving member 7, when the door is closed as it is. The roller 81 of the lock rod 8 abuts on the end of the frame W, but a force in the backward direction acts on the lock rod 8 and the lock rod 8 retreats, so that the door can be closed. When the lock rod 8 is completely closed, the lock rod 8 projects again by the attraction force of the magnet 71 provided on the receiving member 7, and the lock rod 8 is in the locked state shown by the solid line in FIGS.

As described above, the door 2 can be opened both indoors and outdoors as shown in FIGS. 3 and 4. When the door is closed, the tip of the lock rod 8 is provided with a roller 81. In either case, the roller 81 abuts on the end of the frame W or the end of the receiving member 7 and retreats, so that the door 2 can be completely closed. In the illustrated embodiment, the width (the dimension in the thickness direction of the frame W) of the surface portion of the receiving member 7 facing the door 2 is smaller than the thickness of the frame W.
When the door 2 is closed, the lock rod 8 abuts on the end of the frame W. If the width of the receiving member 7 is equal to or greater than the thickness of the frame W, the lock rod 8 will be closed when the door 2 is closed. Abut.

[0020]

Other Embodiments In the above embodiment, the door lock according to the present invention has a configuration in which a roller is provided at the tip of the lock rod. However, a lock rod without a roller may be used. Although the handle is shown as a lever handle, it may be a knob or a push-pull handle, and the handle may be operated in any manner. In the above embodiment, the receiving member is provided with a magnet. However, the locking rod may be provided with a magnet, and the receiving member may be formed of a magnetic material.

[0021]

As described above, since the free door of the present invention has the above-described structure, the following effects can be obtained. Even for heavy doors used for entrances and exits of people, it is possible to use double-axis free hinges that were conventionally used for furniture doors, and open the door both indoors and outdoors. The door can be securely locked in the closed state on the open end side of the door, and a door lock that can be unlocked by operating the handle can be used. It can be used as a free door used for various applications. Further, the door can be securely locked in the closed state, and even if wind pressure or the like acts on the door, the door is not unlocked unless operated by the handle, so that a safe free door can be provided. Moreover, when closing the door, the lock of the door lock is
Since it hardly comes into contact with the frame or the receiving member, the door can be closed with a small force, so that a small closer can be used. Further, when the door is closed, the locking rod has no directionality as in the conventional latch, so that it can be opened in both the indoor and outdoor directions. Since no or very little frictional resistance occurs, the door can be closed with low force and very small and compact closers can be used. Since the closer is buried in the door, it is possible to provide a free door with excellent appearance as a whole.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view showing one embodiment of the present invention.

FIG. 3 is a plan view showing a state where a door is opened to the indoor side.

FIG. 4 is a plan view showing a state where a door is opened to the outside of the room.

FIG. 5 is an enlarged view of a main part in FIG. 3;

FIG. 6 is an enlarged view of a main part in FIG. 4;

FIG. 7 is an enlarged cross-sectional plan view of a main part in FIG. 1;

FIG. 8 is an enlarged cross-sectional front view of a main part in FIG. 2;

FIG. 9 is a plan view showing a, b, and c conventional examples 1, 2, and 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Free door 2 Door 3 Free hinge 4 Closer 5 Door lock 6 Handle 7 Receiving member 8 Locking rod W frame

Claims (3)

[Claims] An end of a door is supported by a free hinge of a double-shaft type, and the door is rotatably provided on both sides of an indoor side or an outdoor side. It is characterized by being provided with a door lock on the open end side of the door that is firmly locked in a closed state when closed, and is unlocked and opened by operating a handle on the open end side of the door. Free door to do. 2. The door lock is provided with a lock rod which is always urged in a retreating direction in a lock case attached to the door, and is retractable by operating a handle, and at least a part of the lock rod. And a magnet or a magnetic body provided on a receiving member on the frame side facing the magnetic body or the magnet when the door is closed, and the magnetic body or the locking rod and the receiving member when the door is closed. 2. A free door according to claim 1, wherein the magnetic attraction force with the magnet overcomes the backward biasing force of the lock rod to cause the lock rod to protrude and engage with the engagement hole of the receiving member for locking. 3. The closer embeds a cylinder main body inside the door and substantially at the center in the thickness direction of the door, and has a rod in the cylinder main body which is braked by a spring and oil or high-pressure gas to come out. 2. The free door according to claim 1, wherein the tip of the rod is connected and fixed to the door via a link.