JP2567244B2 - Door catcher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention reliably holds an entrance door, a cabinet door, a furniture door, etc. in an open or closed state by using an attractive force of a permanent magnet, The present invention relates to a door catcher in which a simple operation of simply pulling a door out of a door stop is required when closing or opening, and the suction surfaces are modified so as to always face each other so that the door catches.

(Prior Art) In order to keep the door open in the past, a door stop having a cylinder end facing the opened door is fixed to a floor or the like, and a hook provided on the door stop is pulled to a metal fitting attached to the door surface. Those that were hung and locked were generally used, but it is necessary to bend or crouch, etc. each time the door is disengaged,
Also, there is a problem that the door rattles when it is hit by the wind, and in some cases the hooks come off the metal fittings. Keep the door open or closed,
In some cases, the door is automatically held only by opening or closing it to the door stop position, and even when the door is closed or opened, it can be simply released from the door stop.

(Problems to be solved by the invention) However, as the door is used for a longer period of time, the door mounting position gradually slides down, and the position of the female and male suction tools mounted on the door and the door stop is There is a problem in that the suction force is reduced and the door is uncertainly held because it is not properly handled because it is displaced.

(Means for Solving the Problems) The present invention is provided to solve the above problems, and is a permanent magnet having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface b. 1 and the magnetic pole surface a of the permanent magnet 1.
Female tool A including a ferromagnetic plate 2 attached to the female tool, and the female tool A
A male tool B made of a ferromagnetic plate 3 which is brought into contact with the magnetic pole surface b of the ferromagnetic tool 2 and 3 of the female tool A and the male tool B. The male tool B of the suction tool, in which the protrusions 2a and 3a are attracted to each other via the hole 1 of the female tool A or to the ferromagnetic plates 2 or 3 in a detachable manner, is attached to the surface of the door D. Is loosely fitted in the tubular body 5 of the door stop C having an end portion which is open facing the surface of the door D, and the tubular body 5
From the opening end 5'of at least the magnetic pole surface b side,
A projecting edge c is provided on the peripheral side surface of the female tool A in a direction substantially orthogonal to the magnetic pole surfaces a and b, and the projecting edge c is engaged with the inside of the cylindrical body opening end 5 '. The engaging protrusion 5a is provided.

(Operation) The door catcher configured as above has a door contact C
Since the female tool A provided inside the cylindrical body 5 projects from the opening end 5'with the magnetic pole surface b, when the door D is brought into contact with the door stop C, the magnetic force lines of the permanent magnets 1 of the attracting tools A and B have both magnetic poles. Ferromagnetic plates 2 and 3 that are in contact with the surfaces a and b, and ferromagnetic protrusions 2 that are attracted in the holes 1a that project from both or either of the ferromagnetic plates 2 and 3.
Since a and 3a are concentratedly passed as a magnetic path and the magnetic force lines leaking to the outside are extremely small, they are attracted by a particularly strong adsorption force, and the ferromagnetic protrusions 2a and 3a in which the magnetic force lines are concentrated attract each other. The surfaces are made to face each other and adsorbed.

Further, the female tool A is loosely fitted in the tubular body 5 and can be swung, and the projecting edge c is an engaging projecting edge on the inner surface of the opening end 5 ′ of the tubular body 5.
Since the female tool A does not escape from the cylindrical body 5 because it is engaged with the cylindrical body 5a, the magnetic pole surface b, which is the attracting surface, can face the inclination of the attracting surface of the female tool B due to the fine movement of the door D. It is possible to adsorb the male tool B on the entire surface, and there is no decrease in the adsorbing power.

(Examples) Examples of the present invention will be described below with reference to the drawings.

A is a female tool and B is a male tool. The male tool B is attached to the surface of the door D, and the female tool A has a cylindrical body 5 portion orthogonal to the direction of the surface of the door D that swings and opens. The magnetic pole surface b, which is the attracting surface, is attached to the open end 5 ′ of the cylindrical body 5 of the door contact C which is provided so that the magnetic pole surface b faces the surface of the door D.

In the attraction tool A, a disk-shaped ferromagnetic plate 2 is attached to the magnetic pole surface a of a ring-shaped permanent magnet 1 having a hole 1a directed from one magnetic pole surface a to the other magnetic pole surface b, and a hole is formed at the bottom. Hole communicating with 1a
A permanent magnet 1 and a ferromagnetic plate 2 are fitted into an inverted dish-shaped non-magnetic case 4 having 4a with the magnetic pole surface b of the permanent magnet 1 facing inward, and by locking claws 4b provided at the opening edge of the case 4. In the embodiment shown in FIG. 1, the ferromagnetic plate 2 has a short rod-shaped ferromagnetic protrusion 2a having a thin rod portion 2a 'at one end. By inserting the diameter rod portion 2a 'into the ferromagnetic plate 2 so as to project toward the hole 1a, the small diameter rod portion 2a' is further attached to the non-adsorption surface side of the ferromagnetic plate 2. The circular plate 6 having a diameter larger than that of the mounted ferromagnetic plate 2 is inserted into the center of the hole and caulked, and the peripheral edge of the circular plate 6 is projected to the outside of the peripheral side of the suction tool A. The protrusion 6c is integrated with the suction tool A.

Reference numeral 7 denotes a support member that is erected on the floor surface. One end of the support member has a tubular body 5 welded to one end thereof, and the other end thereof has an annular engaging projection 5a projecting from the inner peripheral surface thereof. The female tool A is loosely fitted in the tubular body 5, and the projecting edge c is engaged with the engaging projecting edge 5a so that the female tool A does not come out of the tubular body 5 and at least the magnetic pole surface b is formed. The cylindrical body 5 is allowed to float while protruding from the open end 5 '.

The male tool B is composed of a disk-shaped ferromagnetic plate 3 and a ferromagnetic protrusion 3a which is integrally formed and protrudes from the center of one surface of the ferromagnetic plate 3. The other surface of the ferromagnetic plate 3 is a door with an adhesive or a double-sided adhesive tape. It is attached by being adhered to the D surface.

In the embodiment shown in FIG. 2, the ferromagnetic plate 2 and the ferromagnetic protrusion 2a of the female tool A are shown.
Are integrally formed, and the outer diameter of the ferromagnetic plate 2 is the case 4
Is larger than the outer diameter of the case 4 and the projecting portion from the case 4 is the projecting edge c.
Thus, it engages with the engaging projection edge 5c of the tubular body 5. The locking claw 4b of the case 4 penetrates the ferromagnetic plate 2 and is folded back onto the non-adsorption surface of the ferromagnetic plate 2.

Further, the male tool B is composed of a separate ferromagnetic plate 3 and a ferromagnetic protrusion 3a, and a wood screw-shaped thin rod portion 3a 'extending from one end of the ferromagnetic protrusion 3a is attached to the ferromagnetic plate 3. And the door D
It is designed to be screwed into and attached to.

In the female tool A and the male tool B, the ferromagnetic plate 3 is attracted to the magnetic pole surface b side, the ferromagnetic protrusions 2a and 3a are attracted to each other in the hole 1a, and the female tool A floats in the cylindrical body 5. The magnetic pole surface b is directly faced to the surface of the ferromagnetic plate 3 of the male tool B to be attracted.
When a and 3a are of such a length that they stick to each other in the hole 1a as shown in FIGS. 1 and 2, and only the ferromagnetic protrusion 2a of the female tool A is provided as shown in FIG. 3 (a). There is a case where it is adsorbed to the ferromagnetic plate 3 of the male tool B, and a case where only the ferromagnetic protrusion 3a is provided, as opposed to this, as shown in FIG. 3 (b).

Further, FIG. 3 (c) shows that the magnetic pole surface b of the female tool A is a concave spherical surface centered on the hole 1a, and the surface of the ferromagnetic plate 3 which is the attracting surface of the male tool B is a convex spherical surface corresponding thereto. It is designed to be easily adsorbed and aligned. In the female tool A, when the case 4 is also covered with the magnetic pole surface b side as shown in FIGS. 1 and 2, the case 4 has a short cylindrical shape as shown in FIG. 4 (a). And the magnetic pole surface b is exposed, or (b) in FIG.
As shown in, the peripheral edge of the surface of the case 4 on the side of the magnetic pole surface b is a protruding edge.
4c to prevent displacement of the attraction position of the male tool B (especially effective when the male tool B does not have the ferromagnetic protrusion 3a), and when the magnetic recording surface such as a cash card accidentally contacts the magnetic pole surface b. In some cases, the protrusion 4c may prevent the magnetic pole surface b from being in close contact with the magnetic pole surface b to prevent the adverse effect of magnetism on the magnetic recording.

FIG. 5 shows various embodiments of the magnetic shield type female tool A. In FIG. 5 (a), a ferromagnetic magnetic shield plate 8 is interposed between the case 4 and the magnetic pole surface b and the magnetic pole surface b side of the case 4 is shown. A projecting peripheral edge 4c is provided side by side with the cylindrical case 4 shown in FIG.
The peripheral edge of the magnetic shield plate 8 attached to the magnetic pole surface b is locked by means of the magnetic pole plate b, and the magnetic shield plate 8 is attached to the magnetic pole surface b by molding in FIG. This is to prevent magnetic leakage from the surface b.

FIG. 6 (a) shows a case where the permanent magnet 1 is a plastic magnet molded from a synthetic resin containing hard magnetic powder, the case 4 is omitted, and the ferromagnetic plate 2 is embedded on the magnetic pole surface a side of the permanent magnet 1. Similarly, FIG. 5 (c) also uses a plastic magnet. Further, FIG. 6 (b) shows the magnetic pole surface b.
The protruding edge 1b is formed by the plastic magnet itself. In the case of a plastic magnet, in which the peripheral edge of the ferromagnetic plate 2 is projected to form the projecting edge c, a hole is opened in the ferromagnetic plate 2 as shown in FIG. It is integrally molded in the embedded state.

FIG. 7 shows various embodiments of the male tool B. In FIG. 7 (a), the ferromagnetic protrusion 3a is caulked to the ferromagnetic plate 3 by a short narrow rod portion 3a '. The ferromagnetic plate 3 facing the magnetic pole surface of the female tool A and a seat plate 3'having a larger diameter than the ferromagnetic plate 3 (not necessarily a ferromagnetic material) are crimped, as shown in FIG. ) Is a male tool B integrally molded with a ferromagnetic material in the same shape as (b), and is adhered to the door surface with a double-sided adhesive sheet or with an adhesive, or a ferromagnetic plate 3 , The outer periphery of the washer 3'or the male tool B is fixed with bolts, wood screws, nails or the like, or the thin rod portion 3a 'of the ferromagnetic protrusion 3a is formed as a wood screw, bolt shape on the door surface as shown in FIG. It is designed to be screwed.

The door catcher is also used as a catcher for temporarily fixing the surface of the cabinet door.

(Effect) Since the door catcher according to the present invention is configured as described above, the door is attracted to the door stop and the open or closed state is maintained by a simple operation of simply opening and closing the door to the door stop installation position. Due to the above structure, a pair of male and female tools that use magnets have a strong attraction force because the magnetic force lines are concentrated and attracted to the ferromagnetic protrusions that are attracted in the holes of the permanent magnets. Is loosely fitted in the cylinder of the door stop, and at least the side of the magnetic pole surface b is projected from the opening end so that it can be swung and reciprocated. Adhesion is performed while keeping the state of being faced, and one of the adsorption surfaces does not tilt and no force is applied to the adsorption surface, which is the weak point of magnetic attraction, from one end.

Also, when the door does not need to be opened or closed, it can be easily closed or opened by pulling the door out of the door stop.
It does not require operations such as hanging off hooks as in the past, has a simple structure and is inexpensive, it is a door catcher such as an entrance door, a furniture door such as a closet, a kitchen bottom door such as a sink. Ideal as a catcher for temporary holding to hold cabinet doors in a closed state.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a door catcher according to the present invention, FIG. 2 is a sectional view of another embodiment, FIG. 3 is a sectional view showing various embodiments of a pair of male and female, and FIGS. FIG. 6 is a sectional view showing various examples of the male and female tools, and FIG. 7 is a sectional view showing various examples of the male tools. A: Female tool, B: Male tool, C ... Door stop, D ... Door, 1
...... Permanent magnet, 1a …… Hole 2,3 …… Ferromagnetic plate, 2a, 3a
...... Ferromagnetic protrusions, 2a ', 3a' ... Small diameter rod section, 4 ... Case, 5 ... Cylinder, 5 '... Open end, 5a ... Engagement edge, 6
... disk, 7 ... support member, 8 ... magnetic shield plate,
a, b ... magnetic pole surface, c ... ridge.

Claims (1)

(57) [Claims] 1. A female member A comprising a permanent magnet 1 having a hole 1a directed from one magnetic pole surface a to the other magnetic pole surface b, and a ferromagnetic plate 2 attached to the magnetic pole surface a of the permanent magnet 1. And a male tool B made of a ferromagnetic plate 3 that is brought into contact with the magnetic pole surface b of the female tool A, and either or both of the ferromagnetic plates 2 and 3 of the female tool A and the male tool B. The male tool B of the suction tool is attached to the surface of the door so that the protruding ferromagnetic protrusions 2a and 3a are removably attracted to each other through the hole 1 of the female tool A or to the ferromagnetic plate 2 or 3 respectively. And the female tool A is loosely fitted in a cylinder of a door stop having an end opening facing the surface of the door, and the magnetic pole surface b side is projected from the opening end of the cylinder at least. A projecting edge is provided on the peripheral side surface of the female tool a in a direction substantially orthogonal to the magnetic pole surfaces a and b, and an engaging projecting edge for engaging with the projecting edge is provided inside the cylindrical body opening end. Its dependent door catcher.