JPS639365B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a stop using a permanent magnet, in particular a hole formed in the permanent magnet between a ferromagnetic plate fixed to one of the magnetic pole faces of the permanent magnet and the other magnetic pole face. A ferromagnetic rod is installed through the stopper to strengthen the magnetic force and enhance the magnetic shielding effect.This is to ensure that other ferromagnetic plates that are removably abutted against the stopper are prevented from shifting when the magnet is attached. The present invention relates to the disclosure of an engaging tool.

Therefore, as a conventional means of preventing lateral slippage of a stopper using this type of permanent magnet, the peripheral edge of a ferromagnetic plate that is magnetically and removably abutted on the end face of the permanent magnet is raised, and a counter plate is used. In this method, the rising engagement edge of the ferromagnetic plate is brought into contact with the outer circumferential surface of the magnet. In addition, it was necessary to specifically configure the magnet to match the external shape and dimensions of the magnet.

In other words, such a structure is not suitable for improving the design of handbags by simplifying the fasteners, and objects tend to get caught on the rising edges.
Furthermore, a considerable gap is created between the mounting ferromagnetic plate and the mounting base plate by bending and raising the peripheral edge. Furthermore, when engaging the male and female stops, it is not possible to engage them by sliding one of them, which is not suitable for smooth engagement.

The present invention has been devised especially in view of the disadvantages of the conventional fasteners, and it replaces the structure that was engaged with the circumferential surface of the conventional permanent magnet with the hole of the permanent magnet and the inside of this hole. Utilizing the air gap between the vertically installed ferromagnetic rod,
By having a ferromagnetic engagement plate that is inserted into and engaged with this gap and provided with a raised engagement edge in place of the conventional raised engagement edge on the periphery, the thickness of the stopper can be reduced. This is an extremely simple structure with a relatively small engaging upright plate or upright tube raised on the flat plate.

In addition, in such a method, each ferromagnetic plate is brought into close contact only in the hole in the center of the magnet by the ferromagnetic rod and this engaging plate, and only in that part is magnetic closure. A circuit was created, which ensured strong magnetic attachment. That is, in the past, separate lines of magnetic force were generated between the rising edge of the ferromagnetic plate that was in contact with a magnet in a detachable manner and the ferromagnetic plate that was fixed to the magnet in advance, and This resulted in a commensurate reduction in magnetic force.

The present invention also provides a means for preventing lateral slippage when a ferromagnetic plate is attached to both pole faces of a permanent magnet to strengthen its magnetic force, by reducing the generated magnetic force in any way. The present invention is particularly designed to be particularly effective as a means for preventing displacement of the magnetically attached surface without causing any damage to the magnetic surface. The gist is that a ferromagnetic plate is fixed to one of the pole faces of a permanent magnet in which an appropriate hole is opened from one pole face to the other pole face, and the length dimension reaching the upper edge of the magnet hole is A ferromagnetic rod is erected on the ferromagnetic plate so as to provide a space between the periphery of the hole and a gap for the insertion of a male stopper, and the ferromagnetic plate surface is magnetically and removably abutted to the other magnetic pole surface. In addition, considerable design changes are planned in accordance with the gist of this configuration, in that the engaging plate that is inserted into the gap is provided in a raised position.

The details of the present invention will be described below with reference to a typical embodiment shown in the drawings. In 1, an appropriate hole 1a is opened from one magnetic pole end face to the other magnetic pole end face as an opening or an assembly configuration gap. In this permanent magnet, a ferromagnetic plate 2 is fixed to one magnetic pole surface of the permanent magnet 1, and a ferromagnetic rod 3 extending from the ferromagnetic plate 2 to the opening edge of the hole 1a is connected. It is integrally fixed to the plate 2, and the rod 3 and the hole 1a
The rod 3 is erected so that an engagement groove 4 is particularly provided between the rod 3 and the rod 3.

Next, attaching leg pieces 5a to 5 to the ferromagnetic plate 2
A mounting plate 5 having a shape a is attached, and this is caulked together with the plate 2 using a rod 3.

A ferromagnetic plate 6 is attached to the female stopper a having such a structure.
An engaging plate 6a that is fitted into the engaging groove 4 on the plate surface of
Separately configure a male stop b with a raised part, and this male stop b
Similarly, a mounting plate 7 having leg pieces 7a to 7a is welded to the mounting plate 7.

There are various methods for attaching the rod 3 to the ferromagnetic plate 2, the attachment plate 5, and the attachment plate 7 to the plate 6, such as welding, brazing, caulking, screw attachment, or Pin pricking or other equivalent methods are contemplated.

Next, in the embodiment illustrated in FIG. 2, a ferromagnetic plate 8 is separately attached to the remaining magnetic pole surface of the permanent magnet 1 for strengthening the magnetic force and for magnetic shielding, and this is attached to a non-magnetic cylinder. A shaped case 9 is integrally fixed to the permanent magnet 1 together with the ferromagnetic plate 2.

In addition, the engaging plate 6a of the male stopper b is cylindrical as shown in FIG. 2, and is made to fit completely tightly between the rod 3 and the magnet hole 1a. Its magnetic adhesion and engagement are more reliable.

In addition, various methods of producing the engaging plate 6a are planned, and as shown in FIGS. 1, 2, 6, and 7, the ferromagnetic plate 6 is In the case where a part is raised or the same material is integrally fixed by welding, etc., the plate 6 is squeezed and provided in a cylindrical shape as shown in Figs. 3 and 8. 4, 5, 9, and 10.
As shown in the figure, it is planned that it will be installed as a cylindrical member that is completely separate from the plate 6.
This cylindrical separate engaging plate 6b is fixed to the plate 6 by brazing, welding, caulking, screwing, pin pricking, or any other suitable method.

Also, Fig. 4, Fig. 5, Fig. 9, Fig. 10, Fig. 1
In the embodiment illustrated in FIGS. 2 and 13, the rod 3 of the female stopper a is shortened by the thickness of the inner bottom of the engaging plate 6a or 6b. Needless to say, such shortening of the rod 3 does not result in any particular reduction in the magnetic force.

Next, in the embodiment shown in FIGS. 6 to 9, the peripheral edge of the male stopper b is made into a rising engagement edge 6c,
It is designed to further enhance the engagement characteristics exhibited by the previous engagement plate 6a or 6a, and the engagement edge 6c is provided only when necessary.

In addition, in this embodiment, the magnet 1 in the female stopper a
The exposed end face except for the hole 1a is fitted with a case 10 made of a non-magnetic material, and a ferromagnetic plate 2 is also fixed at the same time.

Furthermore, FIGS. 11 to 13 show other embodiments of the male stopper b. In the embodiment shown in FIG. It is bent through a portion and fixed to sandwich the substrate 11, and the claw pieces 12 are bitten into the substrate 11 as appropriate.

Next, in the embodiment shown in FIG. 12, a decorative button 13 is fastened at the same time, and a pin 14 is inserted into a resilient groove 13a' in a washer 13a of the button 13 to fasten it. Furthermore, the illustrated example in FIG. 13 shows the bolt 1 inserted through the washer 15.
6 is fixed with a nut 17.

The present invention has the above-described characteristic structure in which magnetism is focused on the upper end of the rod 3 of the hole 1a in the permanent magnet 1, and wasteful emission of magnetic lines of force is avoided as much as possible. The male stopper b is engaged with the female stopper a without reducing the generated magnetic force in any way, and it is possible to reliably prevent the destruction of the magnetic state due to unexpected displacement of the magnetically attached surface. It is something. Also, engaging plates 6a and 6b are used to prevent the magnetically attached surface from shifting.
is relatively small compared to the ferromagnetic plate 6, which makes the external appearance of the male stop b extremely simple.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a typical embodiment of the present invention, and FIGS. 2 to 13 are sectional views showing other embodiments. In addition, in the figure 1... permanent magnet, 2... ferromagnetic plate, 3
...rod, 4...groove, 5...mounting plate, 6...ferromagnetic plate, 7...mounting plate, 8...ferromagnetic plate, 9-10...
...Case, 11...Base plate, 12...Claw piece, 13...
...button, 14...pin, 15...washer, 16...bolt, 17...nut.

Claims (1)

[Scope of Claims] 1. A permanent permanent magnet having a suitable hole extending from one magnetic pole surface to the other magnetic pole end surface, with a ferromagnetic plate fixed to one of the magnetic pole surfaces, and the upper edge of the magnetic hole. A ferromagnetic rod having a length of approximately 100 mm is erected on the ferromagnetic plate so as to provide a gap between the circumferential surface of the hole and the male stopper, and is detachably attached to the other magnetic pole surface. An engagement tool characterized in that an engagement plate to be inserted into the gap is provided on a ferromagnetic plate surface to be brought into contact with the plate. 2. The engagement tool according to claim 1, characterized in that the engagement plate has a flat plate shape. 3. The engagement tool according to claim 1, wherein the engagement plate is cylindrical.