JP2002038802A - Doorstop structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a doorstop structure that can stop a door on a center position of a double action door without a projection and a moving device on a floor and has a simple structure therefore has a high workability and can surely stop the door on its appointed place at a low cost. SOLUTION: Two magnets 12a, 12b are disposed on a lower edge of a door 1 in the condition that the same magnetic poles of the two magnets turn downward and they are connected with a link structure 12 and composed to move up and down conversely to each other and the one magnet 12a is urged downward by an urging device 14. Magnets 21a, 21b are embedded under the floor on a locus of the door 1 and in the one magnet 21a, their same magnetic poles are opposed to the one magnet 12a of the door 1, and the other magnet 21b is set opposite to the other magnet 12b, that is, their different magnetic poles are opposite whereby when the door 1 swings and its magnets 12a, 12b come on the magnets 21a, 21b under the floor the magnet 12a moves upward by the repulsive power and the magnet 12b is attracted, moves downward and sticks to the magnet 21b and to stop the door 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stationary mechanism for a door, and more particularly to a stationary mechanism capable of stopping a door at a neutral position where the door is freely opened without providing a protrusion or a moving mechanism on the floor side.

[0002]

2. Description of the Related Art Conventionally, as a mechanism for stopping a door rotatable around a hinge at a predetermined position, a projection is conventionally provided on a floor surface, a wall, or the like on a rotation locus of the door to serve as a stopper. The door and the door abut against the pivot end, and the stopper and the door are provided with a detachable locking mechanism consisting of a ring and a hook. A lock mechanism is known in which a magnetic material door or a magnetic material fixed to the door is attracted to the door by the magnet.

[0003] As other stationary mechanisms, there are a mechanism called a latch or a bale lock in which a door and a door frame are provided with a projection and a projection receiver which can move in and out, a door closer with a stop and a door closer for free opening. Further, a stopper capable of moving up and down on the floor is provided on the floor so as to be able to come and go with respect to the floor surface, and the stopper is brought close by the door approaching the stopper by the attraction force of the magnet provided on at least one of the stopper and the door. A mechanism (Japanese Utility Model Laid-Open No. 1-134175) has been proposed in which the door is made to protrude from the floor surface and the door abuts on the stopper to stop the door.

[0004]

Among the above-mentioned conventional door stationary mechanisms, there is provided a projection as a stopper on the floor surface, and the door is stopped by a locking mechanism such as a hook and a ring or a magnet. It is necessary to set the door to a neutral position where the door can open freely, because not only may there be a risk that the protrusion will prevent people from coming in and trip over, and the door will not be able to rotate beyond its stopper. Can not.

[0005] A mechanism called a latch or a bale lock provided with a projection and a projection receiver which can come and go on a door and a door frame,
Although it can be fixed at the neutral position when it opens freely, it is necessary to provide a clearance of about 3 mm between the projection side and the receiving side, and the allowable range of the clearance is narrow and high accuracy is required. The door closer with stop cannot be used with the door open freely, and the door closer with the stop for free opening increases the cost because the device is stored in the door frame, door or floor, and the workability is particularly poor when it is stored in the floor. There is a problem.

Furthermore, in the technique proposed in Japanese Utility Model Laid-Open No. 1-134175, the mechanism is simple and when not in use, it is buried in the floor, so that there is no trouble such as tripping, but the neutral position in the freely open neutral position. Not only can not be used, but also because there is a recess in the floor surface and a stopper is slidably provided in the inside of the recess, so that the slide failure of the stopper due to dust and dirt occurs.

[0007] The present invention has been made in view of such circumstances, there is no protrusion from the floor surface, the door can be stopped at the neutral position of the free opening, and it is constructed with a simple mechanism It is an object of the present invention to provide a door stopping mechanism which is capable of stopping a door at a predetermined position without causing any malfunction due to dust and the like, with good performance and low cost.

[0008]

In order to achieve the above object, a door stopping mechanism according to the present invention is a mechanism for stopping a door rotatable around a hinge mechanism at a predetermined position, and comprising a lower end of the door. Two magnets arranged such that the same magnetic poles face downward, a link mechanism for connecting the two magnets to move in opposite directions in the vertical direction, and one of the two magnets And a biasing means for downwardly biasing the same, and a portion of the floor-side door to be stopped is the same as the magnetic pole facing one of the magnets downwardly biased by the biasing means. It is characterized in that the magnets are embedded such that the magnetic poles are opposite to the other magnets and are different from the above-mentioned magnetic poles.

According to the present invention, a magnet is buried on the floor side, and a magnet opposed to the floor side magnet, a link mechanism and a biasing means such as a spring are provided at the lower end of the door, so that a projection is formed on the floor surface. Instead of forming the door, the door is reliably stopped by the repulsion and the attractive force of the opposing magnet, thereby achieving the intended purpose.

That is, in the present invention, two magnets are arranged at the lower end of the door with the same magnetic poles directed downward, and the two magnets are connected by a link mechanism so as to move vertically in opposite directions. To urge one of the magnets downward. A configuration in which different magnet poles are buried on the floor side corresponding to the two magnets so that one of the above magnets urged downward and the same magnet pole faces the other magnet. Take.

According to this structure, when the door arrives at the position to be stopped, the same magnetic pole as the floor-side magnet faces one of the magnets urged downward at the lower end of the door. An upward force acts on the other magnet due to the repulsive force, and at the same time, a downward force acts on the other magnet due to the attraction force because a magnetic pole different from the magnet on the floor side faces the other magnet. Here, since the two magnets on the door side are connected by a link mechanism, the other magnet has a force acting upward on one of the magnets together with a downward force caused by the attraction force of the magnet on the door side. Since it acts as a downward force, it comes close to the magnets on the floor side with a large force and attracts each other, so that the freely opening door is securely stopped at the predetermined neutral position without providing a projection. be able to.

The mechanism used in the present invention is a simple link mechanism, and since the magnet is simply buried in the floor side in a fixed state, it is a low-cost, door-stopping mechanism that is less likely to malfunction. obtain.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of a door 1 and a floor 2 provided with a door stationary mechanism according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing a main part structure on the door 1 side, and FIG. 3 is a longitudinal sectional view showing a main part structure on the floor 2 side. FIG. 4 is an exploded perspective view of a main structure on the door 1 side.

The door 1 has a base end rotatably supported by a hinge mechanism 11, and a lower end of a front end thereof.
Two rod-shaped permanent magnets 12a and 12b, and a pin P at the upper end of the permanent magnets 12a and 12b at both ends.
A link mechanism 12 is provided, which is rotatably connected via a and Pb and includes a horizontal link 12c which is rotatable around a pin Pc at a central portion. Each of the permanent magnets 12a and 12b is arranged so that the south pole faces downward. Further, the length of the permanent magnets 12a and 12b is longer than that of one permanent magnet 12a.
b is longer.

The link mechanism 12 is accommodated in a housing 13 fixed to the door 1 via a mounting member 15. The housing 13 is provided with the pin P for rotatably supporting the horizontal link 12c at the center thereof.
c, and a guide portion R for moving the permanent magnets 12a and 12b only in the vertical direction along their respective longitudinal directions. Holes 13a and 13b for penetrating the permanent magnets 12a and 12b are formed on the bottom surface of the housing 13, and lower ends of the permanent magnets 12a and 12b are respectively formed in the holes 13a and 13b.
And protrudes from the lower surface of the door 1. The pin Pc is provided with a torsion spring 14. The torsion spring 14 comes into contact with a protrusion L formed on one of the permanent magnets 12a of the lateral link 12c to contact the lateral link 12c. 12c
2, the link mechanism 12 is in a state in which one permanent magnet 12a is biased downward and the other permanent magnet 12b is biased upward as shown in FIG. It has become.

When one of the permanent magnets 12a is positioned at the lower end of its movement due to the urging by the torsion spring 14, as shown in FIG.
The length is such that a slight gap is formed with respect to the surface G of the surface. On the other hand, the length of the other permanent magnet 12b is longer than that, and when the permanent magnet 12b reaches the lower end of its movement against the elastic force of the torsion spring 14, its lower end surface is at the floor. 2 is reached.

In the floor 2, two permanent magnets 21a and 21b are embedded in a portion where the door 1 is to be stopped on a locus Tr through which the tip of the door 1 passes when the door 1 rotates. . The permanent magnets 21a and 21b are embedded so that the direction of the magnetic poles is along the vertical direction. One permanent magnet 21a has the S pole facing upward, and the other permanent magnet 21b has the N pole facing upward. ing. And door 1
When the tip of the permanent magnet 2 comes directly above it, one permanent magnet 2
1a is positioned so as to face one permanent magnet 12a on the door 1 side, and the other permanent magnet 21b is positioned so as to face the other permanent magnet 12b on the door 1 side. The upper surfaces of the permanent magnets 21a and 21b are covered with a flat plate 22 made of a non-magnetic material.
Along.

In the above configuration, in the state shown in FIG. 2 where the tip of the door 1 is not located on the permanent magnets 21a and 21b of the floor 2, the door 1 does not come into contact with the surface G of the floor 2 at all. Can be rotated. Then, the door 1 is rotated, and the front end of the door 1 is
1b, one of the permanent magnets 12a and 12b on the door 1 side whose south pole faces downward is repelled by facing the south pole of the permanent magnet 21a on the floor 2 side. The upward force is generated, and the other permanent magnet 1
2b opposes the N pole of the permanent magnet 21b on the floor 2 side and attracts each other to generate a downward force. Thereby, the link mechanism 1
The second horizontal link 12c is rotated by the elastic force of the torsion spring 14, and as shown in FIG. 5, the other permanent magnet 12b protrudes downward and its lower end surface is the N pole of the permanent magnet 21 of the floor 2. It is in a state of close contact. In this state, one of the permanent magnets 12a
Continuously repels the S pole of the permanent magnet 21a, and
Since the other permanent magnet 12b is attracted to the N pole of the permanent magnet 21b, the door 1 surely remains stationary at that position. Further, when the door 1 is pushed or pulled in an arbitrary direction with a certain degree or more of force from the stationary state, the door 1 turns in the direction of the force by overcoming the attraction and repulsion of the magnet.

It should be noted that in the above embodiment, no protrusions or moving objects are present on the floor 2 side. No defect or the like occurs. The force for stopping the door 1 at the position where the permanent magnets 21a and 21b are arranged on the floor 2 is not only the attraction force by one permanent magnet, but also two pairs of permanent magnets 12a and 21a and 12b and 2b.
1b, which is the sum of the repulsive force and the suction force, and as a result, the stationary force of the door 1 becomes strong, and the door 1 can be reliably stopped.

In the above embodiment, the floor 2
An example is shown in which two permanent magnets 21a, 21b are buried on the sides with different magnetic poles facing upward. However, instead of the permanent magnets 21a, 21b, one permanent magnet has a horizontal magnetic pole direction. The permanent magnet may be positioned and arranged such that the S pole of the permanent magnet faces one permanent magnet 12a on the door 1 side and the N pole faces the other permanent magnet 12b on the door 1 side, Further, one U-shaped permanent magnet may be embedded so that each magnetic pole is located at the same position as described above. Further, in the above embodiment, the flat plate 22 made of a non-magnetic material is placed on the magnets buried on the floor side.
Are arranged to serve as a cover, but the flat plate 22 is not always necessary.

As the urging means for urging the one permanent magnet 12a downward, a coil spring or a leaf spring may be used in addition to the torsion spring 14 as in the above embodiment. Of course.

Further, by attaching a thin rubber to the lower end surface of the other permanent magnet 12b in the above embodiment, the frictional resistance to the permanent magnet 21 is increased, and
Can improve the static power of the vehicle.

[0023]

As described above, according to the present invention, the door 1
A link mechanism including two magnets provided so that the same magnetic pole faces downward is attached to the lower end of the, and the two magnets are connected by the link mechanism so as to move vertically in opposite directions. One of the magnets is urged downward by the urging means, and on the floor side, a portion where the door is to be stopped is repelled opposite to one magnet of the door, and is attracted opposite to the other magnet. As the magnet is buried, the freely opening door can be securely stopped at the neutral position by both the repulsive force and the attractive force of the magnet without providing any protrusions or moving mechanism on the floor side. Also, there is no problem that a person trips or malfunctions. In addition, since the mechanism provided on the door side is a simple link mechanism, it can be compactly and easily accommodated within the thickness of the door, and a low-cost and excellent workability of the door can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a door 1 and a floor 2 provided with a door stationary mechanism according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a main part structure on a door 1 side according to the embodiment of the present invention.

FIG. 3 is a longitudinal sectional view showing a main part structure on a floor 2 side according to the embodiment of the present invention.

FIG. 4 is an exploded perspective view of a main part structure on a door 1 side according to the embodiment of the present invention.

FIG. 5 is an operation explanatory view of the embodiment of the present invention, and is a longitudinal sectional view showing a state where the permanent magnets 12a and 12b of the door 1 are rotated just above the permanent magnets 21 of the floor 2 and stopped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 11 Hinge mechanism 12 Link mechanism 12a, 12b Permanent magnet 12c Horizontal link 13 Housing 13a, 13b Hole 14 Torsion spring 15 Mounting bracket 2 Floor 21a, 21b Permanent magnet 22 Plate made of non-magnetic material G Surface of floor 2

Claims (1)

[Claims] 1. A mechanism for stopping a door, which is rotatable about a hinge mechanism, at a predetermined position, comprising two magnets arranged at a lower end of the door so that the same magnetic poles face downward. A link mechanism for connecting the two magnets so as to move in opposite directions in the vertical direction and a biasing means for biasing one of the two magnets downward are provided, and the floor-side door is stopped. In the part to be positioned, the same magnetic pole as the above-mentioned magnetic pole faces one magnet urged downward by the above-mentioned urging means, and the magnetic pole different from the above-mentioned magnetic pole faces the other magnet. A stationary mechanism for a door, wherein a magnet is embedded in the door.