JPH0718943A - Floating-up sliding door induced by electromagnetism - Google Patents

Abstract

PURPOSE:To obtain a sliding door which can be opened quietly by using a metal-made threshold and installing magnets whose magnetic poles may be directed at the bottom of the sliding door. CONSTITUTION:Magnets 2 whose magnetic poles are directed at a metal-made threshold 3 are laid out on the bottom of a sliding door 1. When the door 1 is pulled and moved, the magnetic poles of the magnets 2 laid out on the bottom of the door 1 act on the threshold 3, thereby generating an induced current and inducing magnetic poles. Since the magnetic poles of the door 1 and the induced magnetic poles on the threshold side 3 are identical, there are produced repulsive forces so that the door may be floated up. When the bottom of the door 1 and the top of the threshold 3 are V-shaped respectively, if the door is deviated to either the left side or the right side, the repulsive forces are so stronger that the door may be pulled back to the central part since the distance between the door and the adjacent threshold 3 is near, which prevents the threshold 3 from coming off. This construction eliminates the need for a rotary unit and to open and close the door quietly by floating up 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 sliding door that can be opened and closed quietly without having a rotating part such as a door roller.

[0002]

2. Description of the Related Art Conventionally, doors and the like are often attached to the lower part of sliding doors, but the doors have a rotating part, which may cause malfunction or cause abnormal noise.

[0003]

Therefore, if the sliding door does not have a rotating portion, the possibility of failure is reduced and quiet opening and closing is possible. The present invention was invented to meet this need.

[0004]

[Means for Solving the Problems] The structure will now be described. A magnet 2 having magnetic poles is installed on the lower surface of a sliding door 1 facing the sill, and the sill 3 is made of metal. The sill 3 may be made of metal instead of being made of metal.

[0005]

Next, the operation of the present invention will be described. Since the magnetic poles of the magnet 2 are arranged below the sliding door 1, when the sliding door 1 is pulled and the door is moved, the magnetic poles of the magnet arranged below the sliding door are made of metal. Acting on the threshold 3 to generate an induced current, and a magnetic pole is induced on the threshold side. Since the magnetic pole of the sliding door and the induced magnetic pole on the threshold side are the same pole, a repulsive force is generated and the sliding door floats.

[0006]

[Embodiment] The purpose can be achieved even if a magnet is installed on the threshold side and the lower surface of the sliding door is made of metal. Further, as shown in the sectional view 3, the lower surface of the sliding door 1 has a V shape and the sill 3
If the upper surface of the is also V-shaped, when the sliding door 1 is biased to the left or right as shown in FIG. You can prevent being pulled back and trying to come off the threshold.

[0007]

In a small house, it is annoying to open and close the door when everyone is asleep at night. According to the present invention, the door can be opened and closed quietly. Also, when not in use, there is no gap between the sliding door and the sill, so drafts and dust do not enter.

[0008]

[Brief description of drawings]

FIG. 1 is a front view of the present invention.

FIG. 2 is an enlarged view of the lower left part of FIG.

3 is a left sectional view taken along the line AA in FIG. 2 showing an embodiment of the present invention.

FIG. 4 is a left sectional view taken along the line AA in FIG. 2 showing an embodiment of the present invention.

[Explanation of symbols]

 1 left sliding door 2 magnet 3 threshold 4 right sliding door 5 handle

Claims (1)

[Claims] 1. A sliding door using a metal sill, and a magnet having magnetic poles facing the sill is disposed on the lower surface of the sliding door.