JPH0345511Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a door stopper device that stops a door attached to an opening in a building from opening before it collides with a wall or the like when the door is opened.

[Conventional technology]

Conventionally, commonly known door stoppers are:
A rubber cushion is attached to the end of the stopper, and when the door is opened forcefully or is blown by the wind, the rubber cushion cushions the impact and stops the door. Furthermore, the door stopper known from Japanese Utility Model Publication No. 59-58180 is provided with a magnet energized by a spring, which attracts the door and then moves the magnet back against the spring to stop the door. The opening of the terminal is now stopped.

However, with any of the above technologies, the response of the rubber cushions and springs to cushion the impact is relatively slow, and when the door hits them, they receive a shock and emit a sound. In some cases, the glass in the door cracked or broke due to the impact.

[Problem that the invention attempts to solve]

The object of this invention is to provide a door stopper device that can stop an opening door in a silent state, provide instant response to reduce impact, and reliably provide mitigation of the impact that occurs when the door is stopped. .

[Means for solving problems]

The solution according to this invention is to rotatably support a stopper in the vicinity of the position where the door is opened almost fully, and by rotation of the stopper, at least one pair of different surfaces facing the door and the stopper of the door are rotated. A magnet is fixed to each part facing the stopper, and the outer surfaces of the magnet provided on one surface of the stopper and the magnet provided on the other surface have different polarities, and the outer surface of each magnet is The configuration is such that the spacing between the two points is kept almost the same.

〔Example〕

To explain this idea in detail, Figures 1 and 2
As shown in the figure, a stopper 3 is provided on the floor 2 in the vicinity of the position where the door 1 is opened, and is rotatable about a shaft 4 that stands up from the floor 2. A magnet 5 is fixed so that one of N and S poles 5a and 5b of the magnet 5 faces the door 1, and the other pole faces the stopper 3. Further, the stopper 3 is formed with a pair of surfaces 6 and 7 that face the door 1 alternately as it rotates, and magnets 8 and 9 are formed on each surface 6 and 7, respectively.
is fixed. Moreover, each magnet 8 of the stopper,
One pole of each of the N and S poles 8a, 8b, 9a, and 9b of 9 is provided facing the surfaces 6 and 7, and when the magnet 8 on one surface faces the magnet 5 of the door, The oppositely facing poles of both magnets 5 and 8 are set to be the same polarity and repel each other, and specifically, for example, both are made to face each other as N poles 5a and 8a. Furthermore, when the magnet 9 on the other surface 7 faces the magnet 5 on the door, the poles of the two magnets 5 and 9 facing each other become different polarities, and they are arranged so that they attract each other. For example, the magnet 9 on the door If the surface of the stopper magnet 9 is the N pole 5a, the surface of the stopper magnet 9 is the S pole 9b. Furthermore, the spacing between the outer surfaces of both magnets 8 and 9 of the stopper 3 and the axes of the shaft 4 of the stopper is maintained substantially the same.

The specific structure for rotating the stopper 3 is as shown in FIG.
A shaft 4 is provided in an upright position, a stopper 3 having the above-mentioned structure is loosely fitted onto the shaft 4, and a pair of stops 12, 12 are provided at the bottom of the stopper 3 with a ball that presses against the recess 11 of the base 10 with a spring. The magnets 12 and 12 are arranged in symmetrical positions with respect to the axis 4, and the surfaces 6 and 7 on which the magnets 8 and 9 are provided alternately face the door 1 and maintain that state. There is.
Further, a knob 13 is provided on a portion of the shaft 4 that projects upward from the stopper 3.

In the example shown in FIGS. 4 to 6, a long magnet 8 is provided along the open door 1, and a similarly long magnet 5 is provided on the door 1, so that the repulsive force between both magnets 5 and 8 becomes large. A pair of brackets 14, 14 with a long stopper 3 standing up on the floor 2.
A stop 12 of the above structure is provided between the bracket 14 and the stopper 3 so as to be rotatable with a support shaft 15.
is attached. However, a short magnet 9 on the attraction side of the stopper 3 is fixed.

In the example shown in FIG. 7, a stopper 3 is provided on a wall 16, and magnets 8, 9 are placed between a pair of brackets 14, 14 protruding from the wall 16, similar to the structure shown in FIG. 1 or 4. The stopper 3 is pivoted.

According to the above embodiment, normally the magnet 5 of the door 1
and the magnet 8 of the stopper 3 are set so that they repel each other, and when the door 1 is opened and the magnet 5 approaches the magnet 8 of the opposing stopper 3, the opposing poles of both magnets 5 and 8 are set so that they repel each other. Since they are of the same polarity, the closer they are to each other, the stronger the repulsive force becomes.
The door 1 is stopped before it comes into contact with the stopper 3. Furthermore, when it is necessary to hold the door 1 open, the stopper 3 is rotated to release the magnet 9.
When the magnets 5 and 9 are set facing the door 1, the magnets 5 and 9 attract each other to maintain the open state.

[Effect of idea]

The door stopper device according to this invention has a stopper rotatably provided near the open position of the door, a magnet fixed to the door, and magnets provided on at least one pair of surfaces facing the door as the stopper rotates. If the outer surfaces of both magnets of the stopper are set to have different polarities, and one magnet of the stopper is set to face the door and repel the door magnet, the repulsive force will instantly increase as the two magnets approach each other. Even if the door is opened forcefully, there is no instantaneous impact on the door, and the door stops silently and reliably. In addition, by rotating and setting the stopper magnet so that it attracts the door magnet after the door is opened, the door will remain open and will not swing around due to the wind. This protects the door from impact when it is opened or left open. Furthermore, since the spacing between the axis of the stopper and the outer surface of each magnet is approximately the same, when the stopper is rotated and attracted after opening the door in a state of repulsion, the door will not be scratched by the magnet. It does not need to be attached and can be switched safely by rotating the stopper.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a door stopper device according to this invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view showing the lower part of the stopper, and Fig. 4 is a plan view showing a similar example of the door stopper device according to this invention.
FIG. 5 is a sectional view, FIG. 6 is a cutaway side view showing the shaft support of the stopper, and FIG. 7 is a plan view showing another similar example according to this invention. 1...door, 3...stopper, 5, 8, 9...
...Magnet, 6, 7...plane, N pole...8a, 9a, S
Pole...8b, 9b.

Claims (1)

[Scope of utility model registration request] A stopper 3 is rotatably supported in the vicinity of a position where the door 1 is opened almost fully, and the rotation of the stopper 3 causes at least a pair of different surfaces 6 and 7 facing the door 1 to be connected to the door 1. Magnets 5, 8, and 9 are fixed to the parts facing the stopper 3, respectively, and a magnet 8 provided on one surface 6 of the stopper.
The outer surfaces of the magnet 9 provided on the other surface 7 exhibit different polarities 8a and 9b, and the stopper 3
A door stopper device characterized in that the distance from the axis of the magnet to the outer surface of each magnet 8, 9 is maintained almost the same.