JPS63280171A - Door catcher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is attached to a room door, a cabinet door, a furniture door, a floor, etc., and uses the attraction force of a permanent magnet to hold the door in an open state. To provide a door catcher which can be securely held and can be closed with a simple operation of just pulling the door away from the door stop.

(Prior art) Conventionally, in order to maintain a sliding door in an open state, a door stop having rod ends facing the open door is fixed, and a hook attached to the door stop is pulled to a metal fitting attached to the door surface. Those that could be hung and locked were generally used.

(Problem to be Solved by the Invention) However, in the conventional door catcher as described above, in order to lock the opened door with the hook on the doorstop, the user must bend or bend over to hook the door. It was necessary to hang it on the metal fittings of the door.

In addition, the hole in the door's hook is usually made large enough to make it easier to hang the hook, which causes problems such as the door rattling when the wind blows, and in some cases the hook may come off the hook. was there.

(Means for Solving the Problems) The present invention is a door catcher provided to solve the above problems, and is a permanent magnet having a hole 1a extending from one magnetic pole face a to the other magnetic pole face. 1, a ferromagnetic plate 2 attached to the magnetic pole face a, and a ferromagnetic plate 3 abutted on the magnetic pole face
ferromagnetic protrusion 2a protruding from either or both of the
, 3a are connected to each other through the hole 1a or to the ferromagnetic plate 2.
Or, one of the pair of suction tools A and B, which are removably suctioned to 3, is attached to the door surface, and the other one is attached to the rod end of the straight rod-shaped door stop C facing the chain ring surface. It has a structure in which it is swingably attached and springs in the direction of the groove.

(Function) When the door catcher configured as described above is opened and hit against the door stop C, a pair of suctions attached to the surface of the door and the rod end of the door stop C facing the door surface. Tools A and B are attracted and the door is held in that position, and the attraction tools A and B are attached to a ferromagnetic plate 2.3 with magnetic lines of force of permanent magnet 1 in contact with both magnetic pole faces a and b, and a ferromagnetic plate 2.3. The ferromagnetic protrusions 2a and 3a protruding from the plate 2.3 and attracting in the holes la are concentrated as a magnetic path, and the magnetic force lines leaking to the outside are extremely small, so that the attracting force is particularly strong.

Also, one of the suction tools attached to the door duster C is attached so as to be able to swing and is fired.

Since it can always face the suction tool on the door surface correctly, it can be accurately adsorbed, and even if the door is blown by the wind, it will follow, so one end is used as a fulcrum on the suction surface, which is considered to be the weak point of magnetic adsorption. There is no lever-like force acting on it, making it difficult for the suction to come off.

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

A is a suction tool, and B is a suction target. The suction tool A is attached to the rod end of a straight rod-shaped door stop C, the suction target B is attached to the surface of the door, and the suction tool A and the suction target are attached to each other. AB and A are positioned so as to face each other when the door is opened.

The suction tool A- has a disk-shaped ferromagnetic plate 2 attached to the magnetic pole surface a of a plate-shaped permanent magnet l having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface. A permanent magnet l is inserted into an inverted dish-shaped non-magnetic case 4 having a hole 4a that communicates with the hole 1a with the magnetic pole face facing inward, and the permanent magnet 1 is held by a locking claw 4b provided on the opening edge of the case 4. 1 and a ferromagnetic plate 2 are held together. 5 is door chiri C
It is a straight rod-shaped frame made of plastic, metal, etc. in a hollow shape, and is screwed to a wall etc. through a hole 5a provided at the periphery of one end with an enlarged diameter, so that when the door is opened, the door surface The other end 5° facing the 5° has a partition plate 6° that closes the opening surface of the 5° end, and has an inner diameter large enough to provide a gap with the outer circumferential surface of the suction tool A. A collar 6 is attached to the partition plate 6, and a hole 6°a is bored in the center of the partition plate 6°.

Further, the ferromagnetic plate 2 of the suction tool A has a small diameter scale portion 2a at one end.
A ferromagnetic protrusion 2a having a ferromagnetic protrusion 2a extends through the ferromagnetic plate 2 through the small diameter scale part 2a' and is located in the hole la. The washer 7 is loosely inserted into the hole 6"a of the partition plate 6" of the collar 6, and the washer 7 is fitted into the male screw part provided on the small diameter scale part 2a' which protrudes from the partition plate 6". Then, the nut 8 is inserted. A coil spring 9 or a cylindrical elastic resin or the like is inserted between the ferromagnetic plate 2 and the partition plate 6' in the small diameter weighing part 2a', and the suction tool A is attached to the collar 6. It is projected from the front end of the shell.

IO is a washer for positioning the small diameter scale portion 2a' approximately on the axis of the coil spring 9.

Therefore, the suction tool A can be oscillated, and is adapted to buffer the impact when it receives an impact from the side facing the magnetic pole.

In addition, the suction device B has a ferromagnetic protrusion 3a having a small diameter scale part 3a' with a wood screw at one end in the center of a disk-shaped ferromagnetic plate 3, and the small diameter scale part 3a' is screwed into the door. The suction AA and the suction target B are such that the ferromagnetic plate 3 is on the side facing the magnetic pole, and the ferromagnetic protrusions 2a and 3a are suctioned to each other in the hole la. In the case where the ferromagnetic protrusions 2a and 3a have a length such that they can be attracted in the hole la as shown in Fig. 1, and in the case shown in Fig. 2 (
In the case where only the ferromagnetic protrusion 2a of the adsorbent A is provided as shown in a) and it is directly adsorbed to the ferromagnetic plate 3 of the Jlt-B to be adsorbed, and in the opposite case as in No. 21K(b), the ferromagnetic protrusion 2a is provided. There are cases where only the protrusion 3a is provided.

Furthermore, when assembling the ferromagnetic protrusion 2a, the ferromagnetic plate 2, and the partition plate 6°, the coil spring 9 should be seated well on the surface of the partition plate 6' facing the ferromagnetic plate 2, and removed. A washer 11 may be installed to prevent outflow, and a small diameter weighing portion 2a may be installed.
In some cases, the ferromagnetic plate 2 and the small diameter weighing part 2a' are fixed by crimping, and in other cases they are free from each other. As shown in Figure 3, only the ring spring 12 is installed between the ferromagnetic plate 2 and the partition plate 6°, and the partition plate 6° and the MU diameter rod part 2a are connected.
In some cases, a coil spring 9 is inserted between the washer 7 and the washer 7 at the tip.

In addition, when the suction tool A is covered with the case 4 on the side facing the magnetic pole as shown in FIG. If the surface of the case 4 facing the magnetic pole is exposed, or as shown in FIG. (Effective when the suction device B does not have a ferromagnetic protrusion 3a) and prevents close contact with the magnetic pole face by the protrusion 4c when a magnetic recording object such as a cash card accidentally comes into contact with the magnetic pole face. In some cases, an attempt is made to prevent the negative influence of magnetism on magnetic recording.

Fig. 5 shows various embodiments of the magnetically shielded type suction tool A, and (a) shows a case in which a ferromagnetic magnetic shield plate 13 is interposed between the case 4 and the magnetic pole side, and protrudes from the magnetic pole side of the case 4. (b) is a case in which a cylindrical case 4 is used to lock the circumferential edge of a magnetic shield plate 13 attached to the side facing the magnetic pole, and (C) is a case in which a magnetic shield plate 13 is attached to the magnetic pole face by molding. A shield plate 13 is attached to prevent magnetic leakage from the magnetic pole face when neither is attracted.

Figure 6 shows (a) the permanent magnet 1 as a plastic magnet molded from synthetic resin containing hard magnetic powder, the case 4 omitted, and the ferromagnetic plate 2 buried in the magnetic pole face a side of the permanent magnet l. , FIG. 5(C) also uses plastic magnets. Further, in FIG. 6(b), a protruding peripheral edge 1b made of the plastic magnet itself is formed on the magnetic pole face.

FIG. 7 shows various embodiments of the suction target B.

(a) shows a ferromagnetic protrusion 3a caulked to a ferromagnetic plate 3' by a short thin scale portion 3a', and (b) shows a ferromagnetic plate 3 of a size facing the magnetic pole surface of the suction tool A and a ferromagnetic plate 3'. A seat plate 3" (not necessarily made of ferromagnetic material) having a larger diameter than the magnetic plate 3 is caulked, and (c) is integrally molded with a ferromagnetic material in the same shape as (b). This is the suction target B, and 1
Adhere to the door surface with a double-sided adhesive sheet or adhesive,
Alternatively, the outer circumferential edge of the ferromagnetic plate 3°, the seat plate 3'', or the suction target B can be tightened with bolts, wood screws, nails, etc.

In the above embodiments, the suction device A is installed on the door stop C and the suction device B is installed on the door, but in all of these examples, the suction device A is installed on the door stop as shown in the example shown in FIG. Place suction tool B on doorstop C
may be provided.

In that case, the length, shape, etc. of the narrow diameter portion of the ferromagnetic protrusion are also changed as appropriate.

In place of the coil spring 9, a rubber cushioning material, a foaming cushioning material, or any other appropriate adhesive-generating member may be used.

It may also be used as a door catcher for temporarily securing a cabinet door.

(Effects) Since the door catcher according to the present invention is constructed as described above, by simply opening the door to the door stop installation position, the door attracts the door stop and the open state is maintained, and the permanent magnet is activated. Due to the above-mentioned structure, the pair of adsorption tools used have a strong adsorption force because the lines of magnetic force are concentrated on the ferromagnetic protrusion that attracts in the hole of the permanent magnet, and one of the adsorption tools is attached to the door stop. It is assumed that 11 swings are possible [L direction p
Since the magnets emit light, they move to follow the movement of the door, and the attracting surfaces always remain facing each other, so there is no force applied to the attracting surfaces from one end, which is the weak point of magnetic attraction. ,
In addition, since the door is emitted from the door, it absorbs the shock and does not make unpleasant noises even when the door is opened and hit against the doorstop.

Furthermore, when the door no longer needs to be left open, the door can be easily closed by pulling it away from the doorstop, and there is no need for the conventional operations such as unhooking and unhooking the anti-slip hook.

In addition, it has an excellent design with a clean appearance that does not allow the interior to be seen, and is also sturdy, and can be used as a door catcher for entrance doors, furniture doors such as chests of drawers, doors at the bottom of kitchens such as sinks, etc. It is also ideal as a temporary door catcher.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of a door catcher according to the present invention, Fig. 2 is a sectional view showing various embodiments of a pair of suction devices, and Fig. 3 is a partial illustration of how the suction devices are attached to a door stop. 4 to 6 are sectional views showing various embodiments of the suction device, FIG. 7 is a sectional view showing various embodiments of the suction target device, and FIG. 8 is a sectional view showing various embodiments of the suction device. It is a sectional view of another example of a door catcher.

Claims (1)

[Claims] A ferromagnetic plate 2 attached to a magnetic pole surface a of a permanent magnet 1 having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface b;
Ferromagnetic protrusions 2a and 3a protruding from either or both of the ferromagnetic plate 3 that abuts the magnetic pole surface b can be detachably attached to each other or to the ferromagnetic plate 2 or 3 through the hole 1a. One of the pair of suction devices is attached to the surface of the door, and the other is attached to the rod end of a straight rod-shaped door stop facing the surface of the door so as to be able to swing, and the suction device A door catcher characterized by being emitted.