JPS604579B2 - Engagement tool - Google Patents

Description

[Detailed Description of the Invention] This invention aims to prevent as much as possible the interference of magnetic lines of force in an engaging tool used for closing or locking lids of handbags, bags, bands, etc., particularly in magnets used. The present invention relates to the provision of an engaging tool as described above.

Various improvements have been made to conventional engagement tools using permanent magnets of this type, each of which has its own effects.

The engaging tool according to the present invention is related to the improvement of the adsorbed odor disclosed in Kirei No. 50, No. 5328y.

In the case of the adsorbed odor of Jitsukasho No. 50 No. 53289, for the purpose of forming a magnetic shield, a ferromagnetic plate is used to constitute one magnetic field of a permanent magnet to prevent lines of magnetic force from leaking from the magnetic pole surface. This is what I did. However, in such a magnetic shield, if the ferromagnetic plate used as an attachment is not thick enough to form a magnetic closed circuit that passes all the lines of magnetic force, the lines of magnetic force may leak out, causing the cash card This resulted in the destruction of the magnetic recording part.

In order to eliminate this inconvenience, if the ferromagnetic plate used as an accessory is made thicker and a sufficient magnetic closed circuit is constructed, the lines of magnetic force will pass only through this ferromagnetic slope. This resulted in the inconvenience that the lines of magnetic force passing through the original attracting portion were extremely reduced.

In particular, when the ferromagnetic plate for magnetic shielding is covered with a non-magnetic case, such disadvantages are clearly demonstrated. The engaging tool according to the present invention was provided for the purpose of avoiding the disadvantages of the prior art, and in particular, it provides an effective magnetic shield without reducing the original attraction force. This is what I did.

In order to achieve this purpose, in particular, the ferromagnetic plate 3 and ferromagnetic birch 6 for magnetic shielding are configured to be in direct contact with the ferromagnetic plate 5 of the other engagement tool b, and the plate 3 is housed inside a flange 4a of the case 4, and the flange 4a prevents magnetic cards from coming into direct contact with the ferromagnetic plate 3.

In addition, in order to effectively concentrate the lines of magnetic force at the top end of the ferromagnetic camphor b, which is the main attraction surface for the engagement tool b, a hole is placed between the ferromagnetic camphor 6 and the inner wall of the hole la in the magnet 1. A gap that does not cause a magnetic short circuit is provided, and the top end of the Zen 6 faces the hole 3a in the plate 3 and is in direct contact with the ferromagnetic plate 5 of the engagement tool b. It is.

Furthermore, the suction surface of the engaging tool b is made into a simple flat plate shape, and there is no protrusion for engagement that the engaging tool b normally has, for the purpose of improving the appearance and increasing the ease of use. , a flange 4a is provided toward the cylindrical center of the case 4, and this flange 4a
A ferromagnetic plate 3 is iron mounted and locked inwardly, and a step corresponding to the thickness of the collar 4a is configured as an engagement step for the ferromagnetic plate 5.

The engaging tool according to the present invention is designed to achieve the above object. The hole 1
A ferromagnetic plate 2 is attached to close the hole a, and a ferromagnetic plate 3 having a hole 3a that fits into the hole la is attached to the other magnetic pole surface, and then a collar 4a is attached to the inside of one closed green. Inside the cylindrical non-magnetic case 4, the permanent magnet 1 and the ferromagnetic plate 2 are mounted and integrated in this order so that the ferromagnetic plate 3 is supported inside the collar 4a, and the ferromagnetic plate in the hole Ia The top end of the ferromagnetic birch 6 erected on the plate 2 surface is aligned with the upper edge position of the hole 3a of the ferromagnetic plate 3, and the ferromagnetic birch 6 and the hole la
One of the engaging tools a has a gap between it and the inner wall surface that is sufficient to prevent a magnetic short circuit, and a collar 4a of the engaging tool a.
The ferromagnetic plate 3 and the other engaging member b have a ferromagnetic plate 5 which is attracted to the ferromagnetic plate 3 and the ferromagnetic camphor 6. Furthermore, the following specific embodiments associated with such a configuration and considerable design changes associated with these embodiments are planned. Hereinafter, details of the engaging tool of the present invention will be described with reference to a typical embodiment shown in the drawings.
is a permanent magnet, with a hole la opening from one pole face to the other, and a ferromagnetic plate 2 on one pole face of the magnet 1, and a ferromagnetic plate 2 on the other pole face. Adding a ferromagnetic plate 3 having a hole 3a suitable for the hole la,
The ferromagnetic plate 2, the ferromagnetic plate 3, and the magnet 1 are placed inside a case 4 made of a cylindrical non-magnetic material having a golden plate 4a protruding toward the cylindrical core on the inner periphery, and the plate 3 is placed inside the flange 4a. By folding the bent piece 4b prepared on the other edge of the case 4 onto the two sides of the iron-plated plate, these are fixed together. .

In addition, when this case 4' is made of thermoplastic resin, it is planned that the bent piece 4'b is melted and fixed, and when this bent piece 4'b is short, This bent piece 4'b is prepared to expand inward, and the magnet 1
It was also planned that the plates 2 and 3 would be press-fitted into the case 4 and integrated.

Next, a ferromagnetic camphor tree 6 is erected on the plate 2 surface with a magnetic gap between it and the inner circumferential wall of the hole la, that is, a considerable gap that does not short-circuit the lines of magnetic force, and the top end of the birch tree 6 is inserted into the hole of the plate 3. It is designed to match the upper edge of 3a.

For one engagement tool a, prepare the other engagement tool b made of a ferromagnetic plate 5 with a shape and size that fits inside the edge flange 4a and comes into close contact with the surface of the plate 3. The fixtures a and b are detachably attracted to each other. In addition, these engagement tools a and b
Both have a mounting member 7 for the handbag base c etc., and the mounting member 7 is a general bent leg piece 7.
a, and the piercing pin 7b as shown in FIG.
and a receiving washer for the pin 7b, when a wooden screw or birch 7c is used as shown in Fig. 6, when the bolt 7d in Fig. 7 is assembled with a washer and a nut,
As shown in FIG. 8, a funnel-shaped tube 7e and a bottomed funnel-shaped washer are combined, as shown in FIG. 9, a bottomed funnel-shaped tube 7f and a funnel-shaped washer are combined, and As shown in Fig. 9, other mounting structures are planned when the bottomed funnel-shaped tube 7e is combined with a bottomed funnel-shaped washer, and Fig. 11 shows the mounting structure. It is designed to be directly attached to the spare plates 2 and 5.

It is planned to provide a rounded surface on the circumferential surface of the top end of the paddle 6, to minimize the contact end surface with the plate 5, and to increase the density of the magnetic lines of force at the attracting portion as much as possible.

The green flange 4a is provided on the periphery of the plate 3 for the purpose of functioning as an engaging edge flange for the plate 5 and to prevent magnetic cards, magnetic caps, etc. from coming into direct contact with the surface of the plate 3. , the thickness is determined as necessary, and the thickness can be adjusted freely especially when the case 4 is made of plastic material as shown in Figures 2 and 4. It was also planned to make the rising edge 4a of the case 4 a rolled edge as shown in FIG.

The embodiment shown in FIG. 10 has a curved suction surface of the plate 3 to improve the elasticity of the plate 5, and the embodiment shown in FIG. As a means, the shape of the plate 5 is particularly modified.

The present invention has an advantageous configuration as described above, in particular, the middle section 6 is erected with respect to the inner wall of the hole la of the magnet through a magnetic gap, that is, a gap where the magnetic field is not short-circuited from the birch 6 to the magnet 1. By enclosing the hole 3a of the plate 3 at the top of the camphor 6, the magnetic path, especially the magnetic flux concentrates on the top of the camphor 6, and the plate 5 in the engagement tool b and said board 3 and camphor 6
The magnetic density is increased by making the top end of the camphor tree 6 have a vertical diameter, thereby improving the adhesion force with the plate 5.

In addition, the green collar 4a of the case 4, which is used to connect the magnet 1, the plates 2 and 3, is used as the engagement edge collar of the plate 5, thereby eliminating the need for a protrusion structure for engagement on the plate 5. . From this, board 5
Basically, it is sufficient to have a flat structure, and this has brought good results from both the appearance and handling aspects of handbags and the like. In addition, the edge flange 4a rises and acts as an inclusion to prevent a magnetic card or the like from coming into direct contact with the plate 3, which effectively eliminates the problem of destruction of the magnetic recording portion that would inevitably occur due to this contact. This has been avoided.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of a typical engagement tool of the present invention, and FIGS. 2 to 11 are sectional views showing other embodiments. In the figure, 1... magnet, 2, 3... ferromagnetic plate, 4... case, 5... ferromagnetic plate, 6...
...・Ferromagnetic birch, 7... This shows the mounting member. Traditional/Figure 2 Figure 3 Figure 4 Traditional S Figure 6 Figure 7 Figure 8 Figure 0*/0 Figure Leopard/'Figure

Claims (1)

[Claims] 1. In a permanent magnet 1 with a hole 1a opened from one magnetic pole surface to the other magnetic pole surface, a ferromagnetic plate 2 is placed on one magnetic pole surface so as to close the hole 1a, and a ferromagnetic plate 2 is placed on the other magnetic pole surface so as to close the hole 1a. Hole 1a
A ferromagnetic plate 3 having a hole 3a communicating with the ferromagnetic plate 3 is placed inside the cylindrical non-magnetic case 4, which has a flange 4a inside one opening edge. The permanent magnet 1 and the ferromagnetic plate 2 are fitted and integrated in this order so as to be in contact with the ferromagnetic plate 3, and the top end of the ferromagnetic rod 6, which is erected on the surface of the ferromagnetic plate 2 in the hole 1a, is attached to the ferromagnetic plate 3. One engaging tool a is arranged to match the upper edge position of the hole 3a, and has a gap between the ferromagnetic rod 6 and the inner wall surface of the hole 1a to a degree that prevents a magnetic short circuit. and the other engagement tool b, which has a ferromagnetic plate 5 that fits inside the collar 4a of the engagement tool a and is attracted to the ferromagnetic plate 3 and the ferromagnetic rod 6. engaging tool.