JPS6221202A - Latching tool - Google Patents

Abstract

PURPOSE:To obtain the latching tool having no breakdown in magnetic recording by a method wherein a magnetic shielding plate is provided on the pole-face located on the absorbing side of a female latching tool and then a decorative paper is placed thereon so as to prevent a magnetic short circuit. CONSTITUTION:A female latching tool A is covered with a magnetic shielding plate 5 whereon a decorative paper 6 lies, over the magnetic surface (b) of the permanent magnet 1 having the ferromagnetic member 2 placed on a magnetic surface (a). The outer circumferential surface of this tool A is covered with a cylindrical non-magnetic metal case 4, and the case is bent at both ends of cylinder and integrally formed to use the thickness of the decorative paper 6 as the space for prevention of the magnetic short circuit on the magnetic shielding plate 5. The male latching tool B consisting of a magnetic member 3 is attracted in a detachable manner through the intermediary of a hole 1. According to this constitution, there is no adverse effect inflicting on the magnetic recording, and a latching tool having excellent appearance can be obtained.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention magnetically shields the magnetic pole surface that is open when a permanent magnet is used in a latching tool with a shield plate, and directly attaches the magnetic pole surface to the shield plate itself. The present invention relates to a holder that is attached with paper to prevent magnetic recording cards and the like from coming into contact with each other, and that also allows the paper to have a display or decorative function.

(Prior Art) As shown in FIG. 4, a conventionally used holder using a permanent magnet includes a permanent magnet 1 having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface A female stopper A consisting of a ferromagnetic member 2 attached to a magnetic pole face a of a magnet 1, and a male stopper comprising a ferromagnetic member 3 abutting the magnetic pole face of a permanent magnet l in the female stopper A. The female stopper A is covered with a cylindrical case 4, and furthermore, when it is not engaged with the male stopper B, the permanent magnet Since the magnetism emitted from the magnetic pole face 1 has an adverse effect on magnetic recording cards etc. that come close to the face, a magnetic shield plate 5 made of a ferromagnetic plate is attached to the magnetic pole face.
There was something that was done to counteract this effect.

(Problem to be Solved by the Invention) However, in the above-mentioned holder, the magnetism from the magnetic pole face passes through the magnetic shield plate and does not protrude, preventing it from destroying the magnetic recording of the approaching magnetic recording card. However, there is a risk that the card may come into direct contact with the magnetic shield plate.

In this case, there was a problem in that it would have an adverse effect on the card.

(Means for Solving the Problems) The present invention was provided in order to solve the above-mentioned problems.
A female stop KA consisting of a permanent magnet 1 having a ferromagnetic member 2 attached to a magnetic pole surface a of the permanent magnet 1; A male stopper B made of a member 3 is attached to a permanent magnet 1 through a hole 1a of a permanent magnet 1 in a detachable manner, and a female stopper A is a permanent magnet l having a ferromagnetic member 2 attached to a magnetic pole surface a. A magnetic shield plate 5 and a decorative paper 6 are attached on the magnetic pole face of the magnetic shield plate 5, and a decorative paper 6 is attached thereon, and the outer peripheral surface of the magnetic shield plate 5 is covered with a cylindrical non-magnetic metal case 4.

In addition, the bent parts provided at both ends of the cylinders of the case 4 are folded and integrated, and the thickness of the decorative paper 6 is set to the spacing on the magnetic shield plate 5 to prevent a magnetic short circuit. That is.

(Function) Since the decorative paper 6 covers the top surface of the magnetic shielding plate 5, a magnetic distance corresponding to the thickness of the paper is maintained between the top surface of the magnetic shielding plate 5 and the top surface of the decorative paper 6. does not come into direct contact with the magnetic shield plate 5, so there is no possibility that the records on the magnetic picture card will be destroyed.

(Embodiment) Fig. 1 shows an embodiment of the present invention, where A indicates a female stopper, and l indicates a permanent magnet made of synthetic resin containing ferrite, alnico, cobalt rare earth, or other powder. It has an annular plate shape and has a hole 1a in the center extending from one magnetic pole face a to the other magnetic pole face, and the magnetic pole face a has a protrusion ja in the center of the disc upper plate part 2b. A ferromagnetic member 2 having a ferromagnetic member 2 is attached with its protrusion 2a protruding into the hole la of the permanent magnet 1 with a predetermined gap between it and the inner peripheral surface thereof, and a magnetic shield made of a ferromagnetic plate is attached to the magnetic pole face. A plate 5 is further attached with decorative paper 6 such as cardboard or sticker paper, and each of these has holes 5a and 6a in the center thereof having the same diameter as the hole 1a of the permanent magnet 1. 1a communicates with the outside.

The ferromagnetic member 2, the permanent magnet 1. Magnetic shield plate 5. The outer circumferential surface of the decorative paper 6 is covered with a cylindrical non-magnetic metal case 4, and the case 4 has a folded edge 4a at its upper end and a folded piece 4b at its lower end. and are considered as one body. 7 is a washer-like fastening member with a leg piece 7a, which is attached to the plate portion 2 of the ferromagnetic member 2.
A protrusion 2a is provided on the back surface of the plate portion 2b at the same time as the caulking is performed, and the leg piece 7a is inserted into the mounting board and bent and fixed.

Reference numeral B designates a male stopper, which has substantially the same shape as the ferromagnetic member 2 of the female stopper A, and has a washer-like fastening member 8 with leg pieces 8a that are caulked at the same time as the protrusion 3a.

The female stopper A and the male stopper B are connected to the protrusion 2a of the ferromagnetic member 2.3 through the hole 1a of the permanent magnet 1.

3a is attracted at its tip, and the plate portion 3b of the ferromagnetic member 3 of the male stop B comes into contact with the magnetic pole face of the permanent magnet 1 via the decorative paper 6 and the magnetic shield plate 5.

2nd rl! J designates a bent edge 4a at the upper end of the case 4 that protrudes upward and is folded back to form a projecting edge 4a'. Support the recording card and prevent surface contact.
In combination with the magnetic shielding plate 5, the magnetic shielding effect is further enhanced, and the male stopper B is attracted to the correct engagement position to prevent it from shifting.

Note that the protrusion 3a of the ferromagnetic member 3 of the male stopper B is not provided, and the protrusion 2a of the ferromagnetic member 2 of the female stopper A is made long enough to be directly attracted to the surface of the plate portion 3b, resulting in a bifurcated protrusion. The part 2a is assembled by inserting the small diameter rod part 2c provided at one end into the hole of the plate part 2b, and screwing the female stopper A to the mounting board as a screw or wood screw,
Alternatively, the fixing member 7 may be inserted or press-fitted in the form of a bottle.

Other fixing means include a pipe shape with one end closed or an open pipe attached to the plate portions 2b, 3b of the ferromagnetic member 2.3, as shown in the embodiment of FIG. The fastening members 7 and 8 of the shape are attached by welding the other end which is expanded into a trumpet shape, or by caulking a washer whose end is wrapped around the periphery, and the fastening members 7 and 8 are attached. One end is pushed into the hole made in the mounting board of the hanging tool so that it protrudes from the board surface, and the protruding end is expanded and swaged, and a decorative button rod and a flanged rod are placed inside the open end. The body, etc. is press-fitted and fastened, or a female thread is cut into the inner hole and a flanged bolt is screwed in for IF mounting, or the fastening member 7.8 in the form of a closing vibrator is expanded. A device is used that is inserted into a mounting member having a chamber and then expanded and fixed within the slit-forming chamber.

Figure 3 shows the ferromagnetic member 2 in the female stopper A, contrary to Figure 2.
The length of the protrusion 3a of the ferromagnetic member 3 in the male stopper B is such that it can be directly attracted to the plate part 2b of the female stopper A without providing the protrusion 2a on the male stopper B.

In addition, the ferromagnetic member 3 is one in which a protrusion 3a and a plate part 3b are integrally formed.

(1) The hanging tool according to the present invention is constructed as described above, and in particular, a magnetic shield plate is attached to the magnetic pole surface on the attracting side of the female stopper, and furthermore, a magnetic short-circuit prevention interval by decorative paper is set on the magnetic shield plate. Since it is provided on the surface, there is no leakage of magnetism, and even if a magnetic recording card such as a ticket or cash card comes into contact with the surface, it will not come into direct contact with the magnetic shield plate, and there will be no adverse effect on magnetic recording due to magnetism. .

In addition, decorative paper is softer and has a more cushioning effect than metal.
Furthermore, it has heat insulating and hygroscopic properties, so it feels very soft to the touch without feeling cold or sticky.

Furthermore, paper is inexpensive, and the type, shape, printing, writing, etc. can be freely changed, and it is easy to create what you want, so it can be used as an advertising medium by printing commercials, designs, photographs, etc. It is also possible to coordinate with the article or part of the article to which the fastener is attached, and it is also possible to improve the appearance of the article.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a typical embodiment of the present invention, FIGS. 2 and 3 are sectional views of other embodiments, and FIG. 4 is a sectional view of a conventional example. 1... Permanent magnet, 2, 3... Ferromagnetic member, 4...
Case, 5... Magnetic shield plate, 6... Decorative paper. 7.8...Fixing member. Figure l Figure 2 Figure 4

Claims (1)

Claims: A female stopper consisting of a permanent magnet 1 having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface b, and a ferromagnetic member 2 attached to the magnetic pole surface a of the permanent magnet 1. A hook in which a fixture A and a male fixture B made of a ferromagnetic member 3 that abuts the magnetic pole surface b of a permanent magnet 1 in the female fixture A are removably attracted to each other through a hole 1a of the permanent magnet 1. In the female stopper A, a magnetic shield plate 5 is attached to the magnetic shield plate 5 on the magnetic pole surface b of the permanent magnet 1, which has a ferromagnetic member 2 attached to the magnetic pole surface a, and a decorative paper 6 is further attached thereon, and the outer circumferential surface of the female stopper A is is covered with a cylindrical non-magnetic metal case 4, and the bent portions provided at both ends of the case 4 are folded and integrated, and the decorative paper 6 is
The hanging tool is characterized in that the paper thickness is set to a magnetic short-circuit prevention spacing on the magnetic shield plate 5.