JPH0754523Y2 - Magnetic door stopper - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge-type door stopper for stopping an opening / closing door attached with various hinges such as a building door and a container opening / closing lid attached at various positions. Small, lightweight,
The structure can be simplified and the manufacturing cost can be remarkably reduced.

[0002]

2. Description of the Related Art There are various types of door stoppers such as a high-grade hydraulic type, a type using a balance spring mechanism, and a friction type using a spring. Due to their mechanism, it is difficult to make these conventional ones extremely small and lightweight, and it is also difficult to significantly reduce their manufacturing cost. In addition, the spring type has a limit in simplification, weight reduction, and size reduction of the mechanism due to the use of the spring, and it is not impossible to make the size extremely small, but in that case, sufficient door holding force can be obtained. There is a problem of not

[0003]

Therefore, the present invention devises the mechanism structure of the door stopper to enable the size and weight to be remarkably reduced and to increase the door holding force in comparison with its size. The task is to do so.

[0004]

[Means taken for solving the problems] The means taken for solving the above problems are constituted by the following elements (a) to (c). (A) A permanent magnet board is fixed to a door supporting frame that supports the door, (b) A magnetic board is fixed to the other end of an L-shaped link whose one end is pivotally attached to the door and whose center is bendable. C) The magnetic plate at the other end of the L-shaped link and the permanent magnet plate are rotatably connected to each other by a pivot, and the other end of the L-shaped link is rotatably connected to the door support frame. The above magnetic disk also includes a permanent magnet.

[0005]

[Operation] The magnetic plate fixed to the other end of the flexible L-shaped link interposed between the door and the door support frame is attracted to the permanent magnet plate fixed to the door support frame, and its pivot axis is centered. And is rotatably connected. Although the magnetic plate is rotatable with respect to the permanent magnet plate, it is strongly attracted by the magnetic force to the permanent magnet plate and strongly pressed against it, so that a strong frictional force is generated on the pressure contact surface, and this frictional force causes the permanent magnets to rotate. It receives great resistance to rotation with respect to. This frictional resistance holds the door at an arbitrary opening position. The attraction force between the permanent magnet board and the magnetic board can be increased sufficiently by increasing the strength of the permanent magnet, and in some cases, the attraction force can be further strengthened by using the magnetic board as a permanent magnet. You can Further, the friction resistance of the pressure contact surface can be increased by making the pressure contact surface between the permanent magnet and the magnetic disk rough such as a satin finish to increase the friction coefficient of the pressure contact surface. Therefore, a sufficient door holding force can be secured by the small door stopper. The pivot mechanism may be a central shaft projecting from the permanent magnet plate or the magnetic plate, and a central hole into which the central shaft is fitted may be recessed in the permanent magnet plate or the magnetic plate. further,
This is the same even if a door stopper composed of a permanent magnet board and a magnetic board is provided at the connecting portion between the door and one end of the L-shaped link, and even if it is provided at the central bent portion of the L-shaped link, its action and effect. There is no difference above.

[0006]

[Example] Next, a first example will be described with reference to FIGS. Both ends of an L-shaped link 4 are rotatably pivotally attached to an inner surface of an upper end of a door 3 which is attached to a door support frame 1 by hinges 2 and 2 and an under surface of the door support frame 1, respectively. The center 5 of the mold link 4 is bendable by a pivot pin 6. A bracket 7 is fixed to the lower surface of the door support frame 1 with set screws 8 and 8, and a permanent magnet disk 9 is fixed to the bracket 7. One end of the L-shaped link 4 is rotatably pivoted in a horizontal plane by a pivot pin 13 perpendicular to a bracket 12 fixed to the inner surface of the upper end of the door 3, and the magnetic disk 14 fixed to the other end is permanent. It is attracted to the magnet disk 9 and is rotatably connected. The rotatable coupling mechanism, that is, the pivot mechanism, between the magnetic disk 14 and the permanent magnet disk 9 is shown in FIG.
A mechanism in which the magnetic disk 14 and the permanent magnet disk 9 are connected by a pivot 11 as shown in (a), or a central shaft 15 is projectingly provided on the magnetic disk 14 as shown in FIG. A mechanism in which the matching central hole 10 is provided in the permanent magnet disk 9 and the magnetic disk 14 is rotatably connected to the permanent magnet disk 9 may be used. The center shaft 15 and the center hole 10 may be provided on either of the disks 9 and 14. In this way
The other end of the L-shaped link is rotatably connected to the bracket 7. As a result, the magnetic disk 14 is attracted to the permanent magnet 9 and strongly pressed against it. L along with the opening / closing operation of the door 3
The magnetic disk 14 at the other end of the mold link 4 rotates with respect to the permanent magnet disk, but when the opening / closing operation of the door stops, the magnetic disk is fixed to the permanent magnet disk by the frictional force of the pressure contact surface.
This locking action holds the door in that position. The second embodiment is an example in which the present invention is applied to an opening / closing lid 21 which is attached to the upper surface of the container 20 by a hinge so as to be openable and closable. In this example, one end of the L-shaped link 4 is connected to the lower surface of the lid 21 by a horizontal pivot pin, and the other end is connected to the container 20.
Is connected to the upper end surface of the side wall of the via a door stopper. Since the lid 21 opens and closes vertically, the bracket 7 of the first embodiment is fixed as it is in the upper end surface of the side wall of the container 20. The specific mechanism and its operation are the same as those in the first embodiment. In the above examples, the pressure contact surface between the permanent magnet disk and the magnetic disk preferably has an appropriate friction coefficient and wear resistance. For that purpose, the pressure contact surface of the permanent magnet disk and the pressure contact surface of the magnetic disk are Is roughened in a satin pattern, and this pressure contact surface may be coated with an abrasion resistant resin such as tetrafluoroethylene resin. Further, an electromagnet is used as the magnet used for the magnetic door stopper, which is also included in one embodiment of the present invention.

[0007]

[Effect] The above problems of the present invention have not been solved yet and are new problems. Therefore, the most peculiar effect of the present invention is to solve this problem and solve the above-mentioned problems inherent in the prior art. Therefore, the present invention has sufficient technical progress by solving the problems of the present invention. Furthermore, a magnet plate and a magnetic plate are provided on the rotatable hinge part of the door stopper, which is extremely small, lightweight, has sufficient door holding force, and has a simple structure as compared with the conventional type. The opening / closing door can be stopped at an arbitrary position, and the manufacturing cost thereof can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment in which a door stopper of the present invention is applied to a door of a house.

FIG. 2A is an enlarged partial sectional view of a door stopper in which a permanent magnet disc and a magnetic disc are pivotally attached by a pin in the first embodiment, and FIG. 2B is a center of the permanent magnet disc in the first embodiment. FIG. 7 is an enlarged partial cross-sectional view of a door stopper in which a hole is provided and a central axis is provided on a magnetic disk so that both disks are pivotally attached.

FIG. 3 is a perspective view of a second embodiment in which the door stopper of the present invention is applied to an opening / closing lid of a container.

[Explanation of Codes] 1 ... Door support frame 2 ... Hinge 3 ... Door 4 ... L-shaped link 5 ... L-shaped link center 6 ... Pivoting pin 7 ... Bracket 8 ... Set screw 9 ... Permanent magnet disc 10 ... Center hole 11 ... Pivot 12 ... Bracket 13 ... Pivot pin 14 ... Magnetic disc 15 ... Center shaft 20. ..Container 21 ... Opening / closing lid

Claims (3)

[Scope of utility model registration request] 1. A permanent magnet board is fixed to a door support frame for supporting a door, one end of which is pivotally attached to the door, and the center of which is bendable. A magnetic door stopper in which a magnetic plate at the other end and the permanent magnet plate are pivotally connected to each other by a pivot, and the other end of the L-shaped link is pivotally connected to a door support frame. 2. A permanent magnet board having a central hole or a central axis is fixed to a door supporting frame for supporting the door, one end of which is pivotally attached to the door and the center of which is at the other end of a bendable L-shaped link. A magnetic disk having a central hole is fixed, and the central axis or the central hole of the magnetic disk at the other end of the L-shaped link and the central hole and the central axis of the permanent magnet disk are fitted to each other to form a permanent magnet disk and a magnetic disk. Is a magnetic door stopper in which the other end of the L-shaped link is rotatably connected to a door support frame. 3. The magnetic door stopper according to claim 1, wherein the magnetic plate is a permanent magnet.