JPH0312194B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a technique for reliably sealing doors such as entrances and entrances using magnetic force.

[Background Art] Conventionally, so-called magnetic locks have been used, in which a magnet is attached to the opening frame, a piece of iron is attached to the door, and the door is closed by the attraction force between the magnet and the piece of iron. There was something called "Yatsuchi", but when a magnet and a piece of iron come close to each other when closing a door, the adsorption force increases rapidly, causing the door to close with force.
Not only was it noisy, but there was also the risk of damaging the door and opening frame. On the other hand, if you try to open the door by pulling (or pushing) it, the magnet and iron pieces are fixed in the suction position, so the door will not close firmly and you will have to pull the door too hard. In the past, the door was not easy to use, as the extra force caused the door to hit the surrounding area.

[Object of the Invention] The present invention has been made in view of the drawbacks of the conventional example described above, and its purpose is to close the door by utilizing the magnetic repulsion between the fixed and moving magnets. It absorbs the impact of the door and allows it to close softly, and when the door is closed, the movable magnet moves and locks the door with magnetic attraction.Furthermore, all four circumferences of the door are completely magnetic. The door is sealed tightly and has high airtightness, and when the door is opened, the movable magnet returns to its original position by operating the door handle, allowing the door to open naturally due to magnetic repulsion. There is a particular thing.

[Disclosure of the Invention] The present invention provides a door 1 in an opening frame 3 so as to be openable and closable, and fixed magnet bodies on one side of the doorstop surface 33 of the opening frame 3 and one side of the side edge of the door 1, which face each other when closed. 38 and a moving magnet 10 is provided on the other side, and the moving magnet 10 moves between a repulsion position where the same poles face the fixed magnet 38 and an attraction position where different poles face the fixed magnet 38. The moving magnet 1
0 to return from the attraction position to the repulsion position, and a door handle 22 for moving the movable magnet 10 from the attraction position to the repulsion position.
Both movable and fixed magnets 10 and 3 which overcome the return urging force in a state close to the fixed magnet 38
The opening frames 3 facing each other are moved from the repulsion position to the suction position by the suction force between the opening frames 3 and 8.
An adsorbed object 6 is provided on one of the other sides of the door stop surface 33 and each other side of the side edge of the door 1, and a magnetic adsorbent 36 is provided on the other side, so that when the door 10 is closed, the adsorbed object 6 and the magnetic adsorbent 36 are arranged to attract each other by magnetic action, thereby achieving the above object.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Reference numeral 1 denotes a door such as an entrance door or an interior door, which is rotatably hinged to a passageway opening by a hinge 2, so that when it is closed, it stops against an opening frame 3 on the inner periphery of the passageway opening. It's summery. A closure holding device 4 for sealing the door 1 is provided around the four circumferences of the surface of the door 1 that faces toward closing (hereinafter referred to as the back surface), and is designed to be magnetically attracted to a magnet provided on the opening frame 3. It's summery.

That is, a relatively shallow notch 5 is formed at the upper edge, lower edge, and side edge on the hinge side of the door 1 over the entire length thereof from the back surface to the peripheral edge.
An adsorbed body 6 having an L-shaped cross section as shown in FIG. 8 is attached inside. The object to be attracted 6 consists of an adherend piece 6a and a mounting piece 6b, and is made of ferromagnetic metal such as stainless steel or iron that is attached to a magnet.
As shown in FIGS. 6 to 6, the attachment piece 6a is positioned on the back side of the door 1, and the mounting piece 6b is positioned on the circumferential side and fixed to the door 1 with screws 7.

Furthermore, a relatively large notch groove 8 is provided on the free side edge of the back surface of the door 1 over the entire length of the top and bottom, and the surface of the notch groove 8 is made of aluminum and has a substantially inverted U-shaped cross section as shown in FIG. A space is formed within the cover 9 over the entire vertical length, and a movable magnet body 10 having alternating magnetic poles at regular pitches as shown in FIG. There is. The cover 9 may have an L-shaped cross section as shown in FIG. 9, and the upper and lower openings of the space are closed by groove lids 11. This moving magnet 10
The assembly of the parts is carried out in the steps shown in FIGS. 13 to 17. First, the inner surface of the notch groove 8 is finished with sandpaper to reduce frictional resistance (Fig. 13), and a slippery sheet 12 made of synthetic resin with low resistance is pasted over the entire length on the back surface of the notch groove 8. (Figure 14). Next, the central piece 13a and the upper and lower pieces 13b of the aluminum rail 13 are horizontally connected via the connecting fittings 14a and 14b, the rib 15 and the rib mounting fitting 16 are attached with the screws 17, and the rear A pair of ribs 15 are made to protrude to the side (Fig. 15). Screw 17 is coated with paint to prevent it from loosening. After this, a movable magnet 10 such as a sintered magnet in which N poles and S poles are arranged alternately at a constant pitch is set on the rail 13 (Fig. 16), and the ends of the upper and lower pieces 13b are bent and moved. A spacer 19 is inserted between the end of the magnet body 10 and the bent piece 18 of the rail 13, leaving a margin (FIG. 17). The moving magnet body 10 assembled in this way is only mounted on the rail 13, and the spacer 19
Since there is a gap between the bent piece 18 and the bent piece 18, it is possible to move slightly along the rail 13. Thus, the movable magnet body 10 and the rail 13 are housed in the cutout groove 8 so as to be able to freely slide up and down.

There is a latch box 2 on the free end of door 1.
0 is embedded, and a cantilevered door handle 22 is fixed to the outer surface of the door 1 at both ends of the operating shaft 21 of the latchbox 20.
The locking key 23 is designed to protrude and be locked when the door handle 22 is horizontal, and to be retracted and unlocked when the door handle 22 is lowered. Moreover, the operating shaft 21 has a latch box 2.
The operation plate 24 is pressed at a position other than 0,
An arm 25 protruding from the operation plate 24 protrudes into the notched groove 8 and is fitted between a pair of ribs 15, so that the rotation of the door handle 22 and the vertical movement of the movable magnet 10 are linked.

What is shown in FIG. 18 is another example of the structure of the moving magnet body 10. In this embodiment, the inner surface of the notched groove 8 is finished with sandpaper to eliminate frictional resistance as shown in FIG. 19. The rail 13 is a single piece made of synthetic resin such as vinyl chloride, and one rib 15 is fixed with a screw 17 via a rib mounting bracket 16, and the rail 13 is fixed on both sides of the rib mounting bracket 16. A moving magnet 10 such as a sintered magnet is adhered to the rail, a rubber magnet block 26 is placed at the end of the moving magnet 10, and the rail 13 and the rubber magnet block 26 are fixed with iron wires 27. Further, an operation plate 24 operated by the door handle 22 is housed in a latch box 28 embedded in the door 1, and the operation plate 24 has a forked fork shape with a rib inserted through an opening 29. Now you can grab 15.

The opening frame 3 of the passageway opening consists of an upper stile 30, a vertical stile 31, and a lower stile 32, and the door stop surface 33 of the upper stile 30, the lower stile 32, and the vertical stile 31 on the hinge side is covered with rubber over the entire length of each. An elastic magnetic adsorbent 36 such as a magnet (not shown) or a permanent magnet 34 wrapped in a rubber coating 35 is attached. When the door 1 is closed, the object to be attracted 6 is attracted to the magnetic attraction member 36, and the parts other than the free side are sealed thereby.
Furthermore, since the magnetic adsorbent 36 has elasticity, it absorbs the impact when the door 1 is closed.
In addition, since the adhered body 6 has an L-shaped cross section, the adhered piece 6a is not easily bent and deformed, and the adhesion with the magnetically attracted body 36 is improved, and furthermore, it is easy to drive the screw 7 into the mounting piece 6b. This prevents the magnetic adsorbent 36 from being deformed and undulating when it hits the screw 7, and this also improves the adhesion.

Further, as shown in FIG. 6, a protective overhanging piece 37 is horizontally projected from the upper surface of the lower stile 32 toward the upper side of the magnetic attraction body 36. The tip of the protective overhang piece 37 is rounded so as not to cause pain to the sole of the foot.

A bar-shaped fixed magnet body 38 is fixedly installed on the doorstop surface 33 of the vertical stile 31 on the free side over the entire vertical length, and the fixed magnet body 38 has an N pole and an N pole as shown in FIGS. 12a and 12b. The S poles are alternately aligned vertically with the moving magnets 10 at the same pitch. For example, a plurality of magnets in which north poles and south poles are arranged alternately are wrapped in a heat-shrinkable tube to form a rod shape.

Next, the operation of the moving magnet 10 and the fixed magnet 38 will be explained. In the free state, the movable magnet 10 is biased by the weight of the door handle 22 so that the fixed magnet 38 and the movable magnet 10 face each other with the same polarity as shown in FIG. 12a. However,
Since the moving magnet 10 and the fixed magnet 38 are biased by the weight of the door handle 22 and are in a repulsive position as shown in FIG. After the shock is absorbed, and just before or after the door 1 closes, the movable magnet 5 moves due to the cooperation of the force pushing the door 1, the magnetic attraction force between different poles, and the magnetic repulsion force between the same poles. The door handle 22 is moved to the suction position as shown in Figure 12b.
The magnetic attraction force overcomes the urging force caused by door 1.
is locked and kept closed. In this case, if the moving magnet 10 is able to move slightly on the rail 13, the moving magnet 10
Even without adjusting the position, by being able to move slightly, it can be pulled by the fixed magnet body 38 and self-adjusted. Furthermore, when opening the door 1, move the door handle 22 downward to retract the locking key 23 and return the movable magnet 10 to the repulsive position as shown in Figure 12a. Door 1 is unlocked.

[Effects of the Invention] Since the present invention is configured as described above, the moving magnet is biased to the repulsive position, and when the door is closed, the magnetic repulsion between the moving magnet and the fixed magnet is used. It absorbs the shock between the door stop and the door stop when the door is closed, allowing the door to close quietly, and when the door is completely closed, the magnetic repulsion between the door closing force and the same polarity is generated. The movable magnet body is moved to the attraction position by the cooperative action of the force and the magnetic attraction force between the different poles, and the door is held tightly by the magnetic attraction force between the movable magnet body and the fixed magnet body. It has the effect of being kept closed. or,
When opening the door, operate the door handle to return the movable magnet to the repulsive position, and the magnetic repulsion between the movable and fixed magnets allows the door to open smoothly without applying force. , the magnetic repulsion force decreases rapidly when the poles are slightly separated, which has the advantage of allowing the door to open quietly.
Furthermore, the space between the door and the doorstop surface of the opening frame is sealed by magnetic means over the entire circumference by the moving magnet body, the fixed magnet body, the magnetic attracting body, and the attracted body. It has the advantage of being able to close the door tightly, providing high airtightness, high sound insulation, and good cooling and heating effects.

[Brief explanation of the drawing]

Fig. 1 is a rear view showing a door according to an embodiment of the present invention, Fig. 2 is a partially cutaway enlarged view of the same, Fig. 3 is a front view showing the opening frame of the same, and Fig. 4 is a closed view of the door. Figure 5 is a cross-sectional view of the upper stile part of the same as above, Figure 6 is a cross-sectional view of the lower stile part of the same as above,
Figure 8 is a sectional view of the cover, Figure 8 is a sectional view of the object to be attracted, Figure 9 is a perspective view of a cover with a different shape installed in the notch, and Figure 10 is an exploded perspective view showing the moving magnet and latch box. 11 is a front view showing the state of engagement between the operation plate and the rail, FIGS. 12a and 12b are explanatory views showing the action between the moving magnet and the fixed magnet, and FIGS. 13 and 14 are The figure is a perspective view showing the notch groove machining process, Figures 15 to 17 are perspective views showing the procedure for assembling the same moving magnet to the rail, and Figure 18 is another example of the structure of the moving magnet part. FIGS. 19 to 22 a and b are explanatory diagrams showing the process of assembling the moving magnet body. 1... Door, 2... Opening frame, 6... Adsorbed object,
10... Moving magnet, 22... Door handle, 33...
...Door stop surface, 36...Magnetic adsorption body, 38...Fixed magnet body.

Claims (1)

[Claims] 1. A door is provided in an opening frame so that the door can be opened and closed freely, and a fixed magnet is provided on one side of the doorstop surface of the opening frame and one side of the side edge of the door that face each other when closed, and a moving magnet is provided on the other side, and a moving magnet is provided on the other side. The body is assumed to move between a repulsive position where the same polarity faces the fixed magnet body and an attraction position where the different polarity faces the fixed magnet body, and the moving magnet body is attached so as to return from the attraction position to the repulsion position. At the same time, a door handle is provided for moving the movable magnet body from an attraction position to a repulsion position, and when the movable magnet body is close to the fixed magnet body, the attractive force between the movable and fixed magnet bodies exceeds the return biasing force. The movable magnet is moved from the repulsion position to the attraction position, and the object to be attracted is placed on one of the other sides of the doorstop surface of the opening frame and the other sides of the side edge of the door, which face each other. At the same time, a magnetic adsorption member is provided on the other side,
A door closing/holding device characterized in that an attracting object and a magnetically attracting object are magnetically attracted to each other when the door is closed.