JPS63280177A - 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 with an end facing the open door was fixed, and a hook attached to the door stop was pulled to a metal fitting attached to the door surface. One that was designed to be hung and connected was generally used.

(Problem to be Solved by the Invention) However, with 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 squat to hold the hook on the door. It was necessary to hang it on the metal fittings.

In addition, the holes in the door locking fittings are usually made large enough to make it easier to hang the hook, but when the door is fanned by the wind, it rattles, and in some cases, the hook may come off the fitting. was there.

(F Stage for Solving the Problems) The present invention is a door catcher provided to solve the above problems, and is a permanent door catcher having a hole 1a extending from one magnetic pole face a to the other magnetic pole face. A ferromagnetic plate 2 attached to the magnetic pole face a of the magnet 1, and a ferromagnetic plate 3 abutted against 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 H, which are removably suctioned to the door 3, is attached to the surface of the door, and the other is provided protruding perpendicularly to the direction in which the door swings to be opened and closed. The structure is such that the free end of the directly pushed door duster C is swingably attached with the suction surface facing the door surface.

(Function) When the door catcher configured as described above is opened and hit against the door stop C, a pair of suction tools A and B are attached to the surface of the door and the door stop C facing this surface. is attracted and the door is held in that position, and the suction tools A and B are permanent magnets l.
The magnetic line of force connects the ferromagnetic plate 2.3 which is in contact with the I+14 magnetic pole faces a and b, and the ferromagnetic protrusions 2a and 3a that protrude from the ferromagnetic plate 2.3 and absorb/inhale within the hole la. The attraction force is especially strong because there are very few lines of magnetic force that leak to the outside.

In addition, one of the suction tools attached to the door stop C is attached so that it can swing, and it can always face the other suction tool attached to the door stop correctly, so it can attract accurately.
Since the notched groove follows even when it is agitated by the wind, a lever-like force with one end of the suction surface as a fulcrum is not applied to the suction surface, which is a weak point in magnetic suction, and the suction is difficult 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, where the suction target B is attached to the surface of the door, and the suction tool A is protruded perpendicularly to the direction in which the door swings to be opened and closed. It is attached to the free end of the straight rod-shaped door stop C with its suction surface facing the surface of the door door.

The suction device A has a disk-shaped ferromagnetic plate 2 attached to the magnetic pole surface a of a disk-shaped permanent magnet 1 having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface, and a hole 1a at the bottom. A permanent magnet l is placed inside an inverted dish-shaped non-magnetic case 4 having a hole 4a communicating with 1a.
The permanent magnet 1 and the ferromagnetic plate 2 are inserted into the case 4 with the magnetic pole faces facing inward, and the permanent magnet 1 and the ferromagnetic plate 2 are held together by a locking claw 4b provided on the opening edge of the case 4.
and are held together. The main body 5 of the door stop C has a cylindrical shape made of plastic, non-magnetic metal, etc., and the base 5'' is enlarged in diameter and has multiple holes 6 for mounting on the floor etc., so that it can be mounted with wood screws etc. A hole 7 is opened in the vicinity of 5 degrees of the free end, perpendicular to the length direction of the main body 5, and has an inner diameter that provides a gap between the suction tool A and the outer peripheral surface of the suction tool A. 7, that is, a small diameter hole 8 is provided on the other side of the main body 5.

Further, the ferromagnetic plate 2 of the suction tool A has a small diameter push part 2a at one end.
A short culm-shaped ferromagnetic protrusion 2a provided with a ' is provided to protrude toward the hole 1a by inserting the M diameter rod push part a' into the ferromagnetic plate 2, and protrudes from the ferromagnetic plate 2. Small diameter push part 2a'
The tip of the small-diameter push part 2a' is loosely inserted into the hole 8, and the protruding tip is caulked to form a large head 2a'', so that the suction tool A slightly protrudes on the side facing the magnetic pole. and bottom 7
It is swingably mounted in the hole 7 with a gap .

In addition, the suction device B is composed of a disc-shaped ferromagnetic plate 3 and a ferromagnetic protrusion 3a protruding from the center thereof. The push part 3a' is inserted into the ferromagnetic plate 3 and screwed into the door so that it can be attached. The suction tool A and the suction target B are such that the ferromagnetic plate 3 is on the side facing the magnetic pole, and the ferromagnetic projections 2a and 3a are attracted to each other in the hole la.
3a are long enough to attract each other in the hole la as shown in Fig. 1, and when only the ferromagnetic protrusion 2a of the adsorbing tool A is provided as shown in Fig. 4 (a), the strength of the adsorbed tool B is directly increased. In some cases, the magnetic plate 3 is attracted to the magnetic plate 3, and in other cases, only the ferromagnetic protrusions 3a are provided as shown in FIG. 4(b).

FIG. 2 shows an embodiment in which the main body 5 of the doorstop C has a rectangular cylindrical shape, and a hole 9 in one side of the main body 5 is thicker than the diameter of the small-diameter push part 2a' of the ferromagnetic protrusion 2a. The small-diameter push part 2a' protruding from the suction tool A into this hole 9 is provided with a male screw part at the tip, and after being loosely inserted from the outside to the inside, the nut 10 is screwed. This is what I did. 5a is a lid attached to the free end of the main body 5.

FIG. 3 shows an embodiment in which the main body 5 of the door stop C is cylindrical, and a hole 7 having an inner diameter through which the suction tool AA can freely enter and exit is provided on the peripheral wall surface near the free end 5° of the main body 5. A small-diameter push part 2a' extending from the ferromagnetic protrusion 2a is integrally extended to a cap 5a made of slightly hard synthetic rubber, etc., which is fitted onto the free end 5° of the main body 5. 68 of the small diameter of the attachment part 5a'
The suction device A is inserted through the hole 7, and the tip is caulked to form an enlarged head 2a'', and the suction tool A is slightly protruded from the hole 7 so that it can be attached swingably.

In addition, when the case 4 covers the side facing the magnetic pole as shown in FIG. 1, the suction tool A has a short cylindrical shape as shown in FIG. If the surface of the case 4 facing the magnetic pole is exposed, or as shown in (b), the peripheral edge of the surface of the case 4 facing the magnetic pole is formed into a protruding peripheral edge 4C to prevent the suction position of the attracted object AB from shifting (especially when the attracted object AB is exposed). (Effective when there is no ferromagnetic protrusion 3a on tool B), and when a magnetic recording object such as a cash card accidentally comes into contact with the magnetic pole face, the protrusion 4C prevents it from coming into close contact with the magnetic pole face. In some cases, an attempt is made to prevent the negative influence of magnetism on recording.

Fig. 6 shows various embodiments of the magnetically shielded type suction tool A, and (a) shows a structure in which a ferromagnetic magnetic shield plate 11 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 the circumferential edge of a magnetic sheet plate 11 attached to the magnetic pole facing side is secured by a cylindrical case 4, and (c) is a magnetic sheet plate 11 attached to the magnetic pole facing side by molding. A shield plate 11 is attached to prevent magnetic leakage from the magnetic pole face when neither is attracted.

Figure 7 shows (a) the permanent magnet l 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. 7(C) also uses plastic magnets. Further, in FIG. 7(b), a protruding peripheral edge 1b made of the plastic magnet itself is formed on the magnetic pole face.

FIG. 8 shows various embodiments of the suction target B other than the above,
(a) shows the ferromagnetic protrusion 3a caulked to the ferromagnetic plate 3° by a short small-diameter pusher 3a', and (b) shows the ferromagnetic plate 3 and the ferromagnetic plate sized to face the magnetic pole surface of the suction tool A. A seat plate 3" (not necessarily made of ferromagnetic material) having a larger diameter than the magnetic plate 3 is caulked. (C) is integrally molded with a ferromagnetic material in the same shape as (b). It is the object to be attracted B, which is attached to the door surface with a double-sided adhesive sheet or an adhesive, or the outer periphery of the ferromagnetic plate 3'', the seat plate 3'', or the object AB to be attracted is fixed with bolts, wood screws, etc. It is designed to be fastened with nails, etc.

In the above embodiment, the suction tool A is installed on the doorstop C and the suction target B is installed on r#D. The suction target B may be provided on the doorstop C.

In that case, the length, shape, etc. of the small diameter push part of the ferromagnetic protrusion are also changed as appropriate.

Further, the above-mentioned door catcher may be used as a door catcher for temporarily fixing a cabinet door.

(Effects) Since the door catcher according to the present invention is constructed as described below, by simply opening the door to the door stop installation position, the door will stick to the door stop and remain open, permanently. Due to the above-mentioned structure, the pair of adsorption devices using magnets has a strong adsorption force because the lines of magnetic force are concentrated on the ferromagnetic protrusions that are adsorbed in the hole of the permanent magnet. Since the suction tool can be swung, it moves to follow the movement of the door, always keeping the suction surface facing the photo, and pulling it away from one end to the suction surface, which is the weak point of the magnetic force. Such force is never applied.

Furthermore, when the door no longer needs to be kept open, it can be 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 sturdy, so it can be used as a door catcher for entrance doors, furniture doors such as chests of drawers, doors at the bottom of kitchens, etc., and can also be used as a closing door. It is also ideal as a door catcher for sloping cabinets that are held in a closed position.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of one embodiment of a door catcher according to the present invention, FIGS. 2 and 3 are cross-sectional views of other embodiments, and FIG. 4 is a cross-sectional view showing various embodiments of a pair of suction devices. , FIGS. 5 to 7 are cross-sectional views showing various embodiments of the suction tool, FIG. 8 is a cross-sectional view showing various embodiments of the eyepiece 1177 tool, and FIG. 9 is a cross-sectional view of other embodiments of the door catcher. It is a diagram. A...Adsorption up, B...Adsorbed device, C...Door stop, D...Door, l...Permanent magnet, la...Hole, 2.
3... Ferromagnetic plate, 2a, 3a... Ferromagnetic protrusion,
2a', 3a'...Small diameter push part, 4...Case,
5... Main body, 5°... Free end, 6... Hole, 7...
... hole, 8.8° ... hole, 9 ... hole, 10 ... nut, 11 ... magnetic shield plate, a, b ... magnetic pole surface

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 the free end of a straight rod-shaped door stop that protrudes perpendicularly to the direction in which the door swings to be opened and closed. A door catcher characterized in that the door catcher is swingably attached to the door with a suction surface facing the door surface.