JP3118176U - Door to door - Google Patents

Abstract

An object of the present invention is to provide a door stop that does not impair the beauty of the door and can hold the door in the fully open position.
(A) a cylinder made of a non-magnetic material fixed and embedded in the door from the lower end of the door; and (b) slidable within the cylinder and exposed from the inside of the cylinder to the floor surface side. (C) a pedestal made of a magnetic material fixed to the floor surface and provided with a protrusion for locking the piston, and (d) the piston from the floor in the cylinder. It is characterized by comprising an urging means for urging in the direction of leaving.
[Selection] Figure 1

Description

  The present invention relates to a door stop. More specifically, a piston made of a magnet slidably provided in a cylinder made of a non-magnetic material embedded in the lower end of the door and urged away from the floor surface, and a magnetic material provided on the floor surface It is related with the door stop which can lock a door in a full open position by a piston being adsorb | sucked to a base when a door lower end part reaches a full open position (position in which the base was provided).

  Conventionally, as shown in FIGS. 8 to 9, the door 50 or knob 51 collides with a wall or furniture around the door 50, a cabinet 52, or the like by opening and closing the door 50, so that the door stop 53 is prevented. Is provided on the floor 54 in the vicinity of the door 50.

  The door stop 53 includes a base portion 55 screwed to a male screw (not shown) standing on a floor 54 and a buffer body 56 fixed to the upper portion of the base portion 55.

  Further, in order to keep the door 50 open, the U-shaped stopper 57 inserted into the base portion 55 is pulled out and engaged with the flange portion 59 of the hooked washer 58 provided on the side surface of the door 50. I try to stop.

  In the case of the conventional door stop, since the flange portion 59 of the hooked washer 58 is provided on the side surface of the door 50, there is a problem that the beauty of the door is impaired. Further, since the door stop 53 is always erected on the floor 54, it appears that foreign matter protrudes on the floor 54, which is not aesthetically pleasing.

  In addition, various types of doors that can be raised and lowered from the floor have been studied, and conventionally known doors that can be raised and lowered include doors using magnets. The door stop using the magnets described in Patent Document 1 and Patent Document 2, for example, uses a magnetic plate that is swingably installed on the floor surface as a door side magnet (the magnet itself is fixed, The door is fixed in the fully open position.

  However, since the surface area of the door is relatively large, if a strong force is applied to the door due to wind, the door cannot be held in the fully open position with only the attractive force between the magnet and the plate, and the door is lively. There is a problem such as closing well.

  In addition, it is conceivable to provide a stopper on the lower surface of the magnet so that the door can be temporarily fixed at the open position, and to form a through hole for engaging the stopper with the magnetic plate. Sand or dust accumulates on the inside or through the through-holes on the lower side of the magnetic material plate, thereby causing problems such as poor rocking of the plate and contamination of the plate.

Japanese Patent No. 2990601 Japanese Patent Laid-Open No. 10-115139

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a door stop which does not impair the beauty of the door and can hold the door in the fully open position.

The door stop of the present invention is (a) a cylinder made of a non-magnetic material fixed and embedded in the door from the lower end of the door,
(B) a piston made of a magnet provided so as to be slidable within the cylinder and exposed to the floor surface side from the cylinder;
(C) a pedestal made of a magnetic material fixed to the floor surface and provided with a protrusion for locking the piston; and (d) an urging force for urging the piston in a direction away from the floor in the cylinder. It is characterized by comprising means.

  Moreover, it is preferable that the said cylinder is fixed to the lower end of a door via a collar.

  In addition, when at least one packing is interposed between the flange and the lower end of the door, the distance between the lowermost end of the piston and the pedestal can be shortened, and the piston is in a collision with the pedestal. The impact sound can be reduced, which is preferable.

  Further, the piston can be composed of a hollow body and a magnet fixed in the hollow body.

  The biasing means is preferably a compression coil spring interposed between the cylinder and the piston.

  Further, it is preferable that the urging means is a magnetic body fixed in the cylinder.

  ADVANTAGE OF THE INVENTION According to this invention, the door stop which does not impair the beauty of a door and can hold | maintain a door in a fully open position can be provided.

  1 is a perspective view showing a cylinder and a piston constituting a door stop according to an embodiment of the present invention, FIG. 2 is an explanatory view showing a state in which the cylinder of FIG. 1 is embedded, and FIGS. 3 and 4 are drawings. FIG. 5 is a partially broken perspective view showing the internal structure of the door stop according to another embodiment of the present invention, and FIGS. 6 and 7 are operation explanatory views of the door stop of FIG. It is.

Embodiment 1
Referring to FIGS. 1 and 2, the cylinder 2 constituting the door stop of the present embodiment is embedded in the door D from the lower end DL of the door D.

  A flange 1c is provided at the lower end of the cylinder 1. A packing 4 is interposed between the lower end DL of the door D and the flange 1c, and a hole 1h is formed in the flange 1c by a screw 5. The door stop shown is roughly composed of a main body portion 1 installed on the floor and a piston 2 fixed to the door D. In the figure, the rod 1c is formed integrally with the cylinder 1, but is not limited to this configuration, and may be a separate body. In this case, if the material of the cylinder 1 is a metal, it may be fixed by welding or gluing, and if the material of the cylinder 1 is a synthetic resin, it may be fixed by heat fusion or an adhesive.

  As shown in FIG. 1, the piston 2 is composed of a hollow body H and a magnet 2 a fixed to the lower part of the hollow body H. Further, in the space excluding the magnet 2a of the hollow body H, a filler 2d such as paper, resin or clay may be embedded. The material of the hollow body H is not limited to a specific material, and a metal material, a synthetic resin material, or the like can be employed. When the hollow body H is made of a magnetic body, the magnetic lines of force generated from the magnet 2a do not go out of the hollow body H (in this case, an opening 2e is provided at the lower portion of the hollow body H as shown in FIG. 2). The magnetic field lines are required to go out of the hollow body H, and a gap is provided between the magnet 2a and the hollow body H so that the magnetic field lines do not short-circuit). Although not limited, if the material of the hollow body H is made of a non-magnetic material, the lines of magnetic force generated from the magnet 2a go out to the outside through the hollow body H, so that the cylinder material is a magnetic material such as iron. Is preferably selected from non-magnetic materials such as synthetic resins. A lid 2 d can be provided in the upper opening 1 a of the cylinder 1.

  Although the piston 2 has a substantially cylindrical shape in FIG. 1, it is not limited to such a shape. For example, other shapes such as a prism can be employed.

  An opening 1d is provided in the lower part of the cylinder 1, and the piston 2 can protrude and retract from the opening 1d.

  A step portion 1e is provided in the cylinder 1, and an opening portion 1d is formed by the step portion 1e. The piston 2 is provided with a large-diameter portion 2c, and the outer diameter of the large-diameter portion 2c is larger than the inner diameter of the opening 1d of the cylinder 1, so that the piston 2 does not fall out of the cylinder 1. Further, a further step portion 1b is provided on the upper portion of the cylinder 1, and the lid 1 can be supported on the step portion 1b.

  As shown in FIG. 1, the hollow body H of the piston 2 is provided with a small diameter portion 2 c, the outer diameter of the small diameter portion 2 c of the hollow body H of the piston 2, and the opening 1 d of the cylinder 1. The outer diameter of the small diameter portion 2 c of the hollow body H of the piston 2 is slightly smaller than the inner diameter of the opening 1 d of the cylinder 1.

  A compression coil spring 3 is provided between the small diameter portion 2b of the hollow body H of the piston 2 and the inner surface 1g of the cylinder 1 (that is, the substantial inner surface 1f of the cylinder 1 and the small diameter of the hollow body H of the piston 2). The compression coil spring 3 is provided in the gap between the outer surface of the portion 2b). This compression coil spring 3 functions as an urging means for urging the piston 2 in the cylinder 1 in a direction away from the floor F (see FIGS. 3 and 4).

  Although the compression coil spring 3 is shown as the urging means in the figure, the urging means is not limited to the compression coil spring, and a plate spring, for example, may be employed in addition to the compression coil spring. .

  Referring to FIGS. 1 and 2, one packing 4 is interposed between the flange 1 c of the cylinder 1 and the lower end DL of the door D. Thus, when the packing 4 is interposed between the flange 1c and the lower end DL of the door D, the distance between the lowermost end LM of the piston 2 and the pedestal 5 can be shortened. By doing in this way, there exists an advantage that the impact sound generated when the piston 2 and the base 5 collide can be reduced. Further, the number of packings 4 to be used is not limited to one, and a plurality of sheets such as two or three can be used in an overlapping manner. The material of the packing 4 is not limited to a specific material, and may be metal, soft synthetic resin, rubber, paper, or a combination of two or more of these.

  As shown in FIGS. 3 and 4, the base 5 is fixed to the floor surface F by fixing means such as screws. The pedestal 5 includes a projection 5a having a tapered slope and a locking projection 5b for locking the door D so as not to rotate beyond a preset fully open position. The surface on the protrusion 5b side where the protrusion 5a and the protrusion 5b face each other is substantially perpendicular to the floor surface F, and the height of the protrusion 5b is also about 5 to 7 mm. However, the surface on the projection 5a side where the projection 5a and the projection 5b face each other is processed in a round shape and the height is as low as 1 to 2 mm at most. Therefore, the distal end portion LM of the small diameter portion 2b of the hollow body H of the piston 2 protruding from the lower end of the door D cannot exceed the protrusion 5b (that is, cannot rotate beyond a preset fully open position) The tip LM of the small diameter portion 2b of the hollow body H of the piston 2 protruding from the lower end of the door D can get over the protrusion 5a.

  The material of the pedestal 5 is preferably a magnetic material (in particular, a ferromagnetic material such as iron, cobalt, nickel).

  However, the pedestal is not limited to such a configuration, and a configuration in which a plate made of a magnetic material such as iron is swingably attached to a pedestal made of engineering resin such as nylon or polyacetal or zinc alloy, etc. Is also possible.

  Next, the door-to-door operation of the present invention will be described with reference to FIGS.

  First, when the door D is rotated and the piston 2 provided at the lower end of the door D comes on the base 5, the magnet 2a fixed in the piston 2 is attracted to the protrusion 5a of the base 5, and FIG. As shown, the piston 2 descends against the upward biasing force of the compression coil spring 3 and comes into contact with the protrusion 5a. Further, when the door D is opened, since the horizontal distance between the position where the hinge of the door D is normally provided and the piston 2 is 1 m or more, a relatively large rotational torque can be generated. With the operating force, the lowermost end LM of the piston 2 gets over the protrusion 5a while contacting the outer surface of the protrusion 5a, approaches the protrusion 5b while being slightly pushed upward, and finally the piston 2 becomes the protrusion 5b. When abutting, the piston 2 reaches a position sandwiched between the protrusions 5a and 5b. Thereby, the opening of the door D is locked (maintained).

  When closing the door D, when the door D is rotated in the closing direction, the piston 2 comes into contact with the outer surface of the protrusion 5a and can climb over the protrusion 5a while being lifted, and the unlocked state of the door D is released. It is done.

Embodiment 2
Referring to FIG. 5, the door stop according to the present embodiment is composed of a cylinder 1 and a piston 2 slidably provided in the cylinder 1. Since the configuration is basically the same as that of the first embodiment, only the differences will be described below. In the figure, the same reference numerals as those used in FIGS. 1 to 4 denote the same members.

  In the present embodiment, the piston 2 is a bottomed cylindrical body having an open top, and a magnet 2a is fixed to the bottom. The material of the piston 2 is not limited to a specific material, and a metal material or a synthetic resin material can be employed. Further, a long hole SL is formed at a position opposite to the side surface of the piston 2. The cylinder 1 is provided with pins P and Q penetrating the inside of the piston 2 in parallel. A plate-like magnetic body 6 is inserted into the stepped portion Qa of the pin Q. Further, the pin P is inserted through a round hole 6c formed in the magnetic body 6 having a plate shape. The magnetic body 6 is supported by the stepped portion Qa of the pin Q, and the upward movement is locked by a lid 1g that is screwed to the cylinder 2 by a screw Th and closes the upper opening of the cylinder 1. The lower part of the magnetic body 6 is a thin rod-like part 6a. The material of the magnetic body 6 may be any material as long as it has magnetism when placed in the lines of magnetic force, but a ferromagnetic body such as iron, cobalt, or nickel is preferable. Further, it is possible to use a magnet instead of the magnetic body 6.

  In the present embodiment, the plate-like magnetic body 6 having such a rod-like portion 6a functions as an urging means for urging the piston 2 away from the floor surface. Since a magnetic attraction force is generated in a direction perpendicular to the lines of magnetic force generated from the magnet 2a, the piston 2 provided at the lower end of the door D is on the pedestal 5 when the area of the end surface 6b of the rod-like portion 6a is large. At this time, the magnet 2a remains adsorbed on the end face 6b, and the piston 2 does not descend. Therefore, the area of the end face 6b is preferably as small as possible.

  Further, the pins P and Q are inserted through the long hole SL of the piston 2. The long hole SL regulates the moving distance of the vertical movement of the piston 2, and FIG. 5 shows a state where the piston 2 reaches the lowest part (bottom dead center).

  Next, the door-to-door operation according to the present embodiment will be described with reference to FIGS.

  First, when the door D is rotated and the piston 2 provided at the lower end of the door D comes on the base 5, the magnet 2 a of the piston 2 is attracted to the base 5. The magnetic attractive force of the magnet 2a with respect to the protrusion 5a is larger than the attractive force with respect to the end surface 6b of the rod-like portion 6a of the magnetic body 6 of the magnet 2a. For this reason, the magnet 2 a is attracted to the pedestal 5, and the piston 2 descends and comes into contact with the pedestal 5.

  When closing the door D, when the door D is rotated in the closing direction, when the contact between the piston 2 and the outer surface of the base 5 is released, the magnet 2a is attracted to the end face 6b of the rod-like portion 6a of the plate-like magnetic body 6. Therefore, the piston 2 rises and the state where the opening of the door D is locked is released. Needless to say, the pedestal 5 shown in FIGS. 3 and 4 used in the first embodiment can also be employed as the pedestal 5 in the present embodiment.

It is a perspective view which shows the cylinder and piston which comprise the door stop concerning this invention. It is explanatory drawing which shows the state by which the cylinder of FIG. 1 was embedded. It is operation | movement explanatory drawing per door of this invention. It is operation | movement explanatory drawing per door of this invention. It is a partially broken perspective view which shows the internal structure of the door stop concerning other embodiment of this invention. It is operation | movement explanatory drawing per door of FIG. It is operation | movement explanatory drawing per door of FIG. It is explanatory drawing which shows the fixed state of the conventional door. It is explanatory drawing which shows the conventional door stop.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylinder 1a Upper opening 1b Step part 1c 鍔 1d Opening 1e Step part 1f Inner surface 1g Inner surface 1g Cover 1h Hole 2 Piston 2a Magnet 2b Small diameter part 2c Large diameter part 2d Filler 2e Opening 3 Compression coil spring 4 Packing 5 Base 5a Protrusion 5b Protrusion 5b Projection 5b Body 6a Bar-shaped part 6b End face D Door F Floor surface SL Long hole Th Screw

Claims (6)

(A) a cylinder made of a non-magnetic material that is embedded and fixed from the lower end of the door to the inside of the door;
(B) a piston made of a magnet provided so as to be slidable within the cylinder and exposed to the floor surface side from the cylinder;
(C) a pedestal made of a magnetic material fixed to the floor surface and provided with a protrusion for locking the piston; and (d) an urging force for urging the piston in a direction away from the floor in the cylinder. Door to door made up of means. The door stop according to claim 1, wherein the cylinder is fixed to a lower end of the door through a flange. The door stop according to claim 2, wherein at least one packing is interposed between the bag and the lower end of the door. The door stop according to claim 1, 2, or 3, wherein the piston comprises a hollow body and a magnet fixed in the hollow body. The door stop according to claim 1, 2, 3, or 4, wherein the biasing means is a compression coil spring interposed between the cylinder and the piston. The door stop according to claim 1, 2, 3, or 4, wherein the biasing means is a magnetic body fixed in the cylinder.

Images