JPH03230504A - Engaging tool - Google Patents

Abstract

PURPOSE:To facilitate engaging operation, and prevent the shift between a male tool and a female tool, by attracting a ferromagnetic plate via an engaging hole part clamped in a hole of a permanent magnet, and attracting the ferromagnetic plate on a ceiling wall part in a protruding edge. CONSTITUTION:A ferromagnetic protrusion 3a protruding from a ferromagnetic plate 3 is attracted by a ferromagnetic plate 2 via a hole 1a. When the center line of the ferromagnetic protrusion 3a is deviated from that of the hole 1a of permanent magnet 1, the protrusion 3a is guided into an engaging hole part 4c through a taper part 4b of a funnel type hole 4'. As a result, the ferromagnetic protrusion 3a can be easily inserted, and the hole 1a of the permanent magnet 1 can be prevented from being damaged. Since the ferromagnetic plate 3 is attracted by a ceiling wall part 4a surrounded by a peripheral protruding edge 4e, said plate 3 overlaps with the magnetic pole surface of the permanent magnet 1 without deviation. Hence the inserting operation is facilitated, and the position deviation of the ferromagnetic plate 3 can be prevented.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention consists of a female tool and a male tool using permanent magnets, and the male tool has a protrusion that is inserted into and attracted to the hole of the permanent magnet of the female tool. An engaging tool that allows the protrusion of the male tool to be easily inserted, and that allows the male and female tools to overlap and attract each other without misalignment, and to prevent the magnetic recording material from coming into close contact with the magnetic pole surface of the permanent magnet when they are not engaged. This relates to an engaging tool.

[Prior art] A ferromagnetic plate 52 is attached to one pole surface of a permanent magnet 51 that has a hole 51a extending from one pole surface to the other pole surface, and a ferromagnetic plate 52 is attached to the other pole surface. The magnetic plate 53 is detachably attracted to the ferromagnetic plate 52.53.
a ferromagnetic protrusion 52a protruding from either or both of the
or 53a to the other ferromagnetic plate 52 through the hole 51a.
or the ferromagnetic plate 53, or the other ferromagnetic protrusion 52a, or
Conventionally, the permanent magnet 5 is attached to the engaging tool that is designed to be attracted to the 53a.
1 and a ferromagnetic plate 52 are integrated by adhesive molding, welding, or the like, or are fitted into a non-magnetic case 54 having an inverted dish shape and having a hole in the top wall that communicates with the hole 5]a of the permanent magnet 51. things were used.

[Problems to be Solved by the Invention] However, in the above-mentioned engagement tool, the hole 51a of the permanent magnet 51 has the same diameter across both magnetic pole faces, and the ferromagnetic protrusion 53a is fitted into the hole 51a. Ferromagnetic plate 52
Alternatively, fitting cannot be performed unless the strong Fdl protrusions 53a are aligned, making the engagement operation troublesome.

Further, since the ferromagnetic protrusion 53a hits the opening of the permanent magnet 51, there are problems such as the peripheral edge of the opening may be chipped or the peripheral edge may be damaged if the permanent magnet is exposed.

The present invention addresses the above-mentioned problems, has no risk of damage to the permanent magnet, has a good appearance, is easy to insert the ferromagnetic protrusion during engagement, and is compatible with the male tool of the suction bone. The purpose of the present invention is to provide an engaging tool that prevents slippage between the female tool and the female tool, and prevents accidents such as destruction of magnetic recording due to close contact between the permanent 611-stone magnetic pole surface and the magnetic recording object when the device is not engaged. There is.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides one magnetic pole of a permanent magnet 1 having an engaging hole 1a for directing an engaging tool from one magnetic pole surface to the other magnetic pole surface. A ferromagnetic plate 2 is attached to one surface, and a ferromagnetic plate 3 is attached to the other magnetic pole surface in a removable manner, and ferromagnetic protrusions 2a, 3a protrude from the ferromagnetic plate 2.3, respectively. and are attached to each other through the holes 1a, or the ferromagnetic projections 3a protruding only from the ferromagnetic plate 3 are attached to the ferromagnetic plate 2. 4a has a cylindrical engagement hole 4C through the tapered portion 4b.
The top wall portion 4a has a funnel-shaped hole 4′ integrally provided with a protrusion 1fi perpendicular to the top wall portion 4a on the outer peripheral edge of the top wall portion 4a.
The permanent magnet 1 and the ferromagnetic plate 2 are placed in a non-magnetic case 4 in which a magnet 4e is provided in a circular manner, and the permanent magnet 1 is placed inward, and the engaging hole 4C is inserted into the hole 1a of the permanent magnet 1. is held so as to stand up, the ferromagnetic protrusion 3a is attracted to the ferromagnetic protrusion 2a or the ferromagnetic plate 2 through the funnel-shaped hole 4°, and the ferromagnetic plate 3 is held in the protrusion 4e. ceiling wall 4a
It is designed to be adsorbed to.

[Function] The above-mentioned engagement tool has a non-magnetic case 4 in the hole 1a of the permanent magnet 1.
Since the funnel-shaped hole 4' makes the engagement hole part 4C stand up, the ferromagnetic protrusion 3a protruding from the ferromagnetic plate 3 is inserted into the ferromagnetic protrusion 2a of the ferromagnetic plate 2 or the ferromagnetic material through the hole 1a. When adhering to the plate 2, even if there is a misalignment in the center line between the ferromagnetic protrusion 3a and the hole 1a of the permanent magnet 1, the ferromagnetic protrusion 3a is attached to the engaging hole by the tapered part 4b of the funnel-shaped hole 4'. 4c, it is extremely easy to insert the ferromagnetic protrusion 3a,
A top wall portion 4 in which the hole 1a portion of the permanent magnet 1 is not damaged and the ferromagnetic plate 3 is surrounded by a circumferential ridge 4e.
Since the a4 is attracted, the ferromagnetic plate 3 overlaps the magnetic pole face of the permanent magnet 1 without deviation.

Also, when the ferromagnetic plate 3 is not attracted to the magnetic pole surface of the permanent magnet l, magnetic recording materials such as magnetic cards and magnetic tapes
Even if it comes into contact with the pole surface side, it forms a bridging shape due to the ridge 4e and does not come into close contact with the magnetic pole surface, thereby preventing accidents such as destruction of magnetic recording.

[Examples] Examples of the engagement tool according to the present invention will be described below with reference to the drawings.

1 is a permanent magnet, such as a ferrite magnet, a seat magnet, a plastic magnet, a rubber magnet, etc., and has a hole 1a extending from one magnetic pole surface to the other magnetic pole surface.
It is said to be disk-shaped. In addition, the hole 1a has a funnel shape with a tapered part that narrows from one magnetic pole face to the other magnetic pole face a, and the cross-sectional shape may be circular, oval, or rectangular. . Also, holes! a may be constructed by assembling a plurality of permanent magnets.

Reference numeral 2 denotes a disk-shaped ferromagnetic plate having the same diameter as the magnetic pole surface a, which is attached to the magnetic pole surface a of the permanent magnet 1 by adsorption.

Reference numeral 5 denotes a disc-shaped seat plate having the same diameter as the ferromagnetic plate 2. A pair of incisions are made from the periphery across the center, and the portion between the pair of notches is bent perpendicularly to the seat plate 5. The legs are 5a, 5a.

Reference numeral 4 denotes a non-magnetic case that holds the permanent magnet 1, the ferromagnetic plate 2, and the seat plate 5 superimposed on the ferromagnetic plate 2, and is in the shape of an inverted dish. The center has a funnel-shaped hole 4° in which a cylindrical engagement hole 4c is integrally provided via a tapered portion 4b, and the outer peripheral edge of the top wall 4a has a funnel-shaped hole 4°. A protruding edge 4e orthogonal to the protrusion 4e is provided in a circumferential manner.

The permanent magnet 1, the ferromagnetic plate 2, and the seat plate 5 are inserted with the permanent magnet 1 inward and the magnetic pole face facing the top wall 4a, and the hole 1a of the permanent magnet 1 is inserted into the non-magnetic case. The periphery of the permanent magnet 1, the ferromagnetic plate 2, and the seat plate 5 is completely covered by the funnel-shaped hole 4' of the non-magnetic case 4. The sides are covered.

A plurality of locking claws 4d are provided on the lower edge of the non-magnetic case 4, and are folded back onto the surface of the seat plate 5 so that the permanent magnet l, the ferromagnetic plate 2, and the seat plate 5 are fixed inside the non-magnetic case 4. It is integrally held by the female tool A.

3 is a disk-shaped ferromagnetic plate with approximately the same diameter as the magnetic pole face which is attracted to the magnetic pole face of the permanent magnet l in the female tool Δ via the top wall portion 4a in the protrusion 1i4e of the non-magnetic case 4; A ferromagnetic protrusion 3a having a coaxial small-diameter push part 3a' approximately in the center inserts the small-diameter push part 3a' into the hole of the ferromagnetic plate 3, and further inserts the small-diameter push part 3a'
The ferromagnetic plate 3 is inserted into a hole in the center of a leg plate 6 having a pair of legs 6a, 6a bent in a U shape and crimped.
and leg plate 6 are fixed together, and a ferromagnetic protrusion 3a is erected on the ferromagnetic plate 3, thereby forming a male tool B.

The female tool A and the male tool B of this suction tool are attached by inserting their respective legs 5a and 6a into the mounting part of, for example, a bag, and bending them. It is attracted to the ferromagnetic plate 2 through the hole 4' in A, and the ferromagnetic plate 3 is attracted and engaged with the side facing the magnetic pole of the female fitting A.

In the suction tool shown in FIG. 3, the hole 1a of the permanent magnet 1 has a constant diameter, and the gap between the tapered part 4b of the funnel-shaped hole 4' of the non-magnetic case 4 and the peripheral wall of the engaging hole part 4c is non-contact. It is filled with a magnetic tubular member 7.

Further, the female tool A is also provided with a ferromagnetic protrusion 2a, and a small diameter push part 2a provided coaxially with the ferromagnetic protrusion 2a is expanded into a funnel shape at the open end of the cylinder with one end closed. The expanded periphery is wrapped around the periphery of the disc and inserted into the hole in the disc part of the integrated mounting tube 8 and caulked, and the ferromagnetic protrusion 2a is attached to the ferromagnetic plate 2.
The permanent magnet 1 and the ferromagnetic plate 2 are held in a non-magnetic case 4.

The male fitting B is also provided with an attachment tube 8 in the same manner.

This attachment tube 8 is inserted into a hole provided in, for example, a bag, and the female fitting A and the male fitting B are respectively caulked by crushing the protruding end portions.

In addition to the above-mentioned embodiments, attachments for the male tool B or female tool A include those in which the closed end of the tube 8 is an open end, those in which the small-diameter push portion of the ferromagnetic protrusion is shaped like a bottle, Wooden screws or bolts are used, and they can be attached to bags, etc. by caulking, piercing, screwing, adhesion, adhesion, welding, etc., or they can be attached to bags, etc. using double-sided adhesive sheets or adhesives without using attachments. In some cases, it may be attached using an agent, etc.

Figure 4 shows that a ferromagnetic plate or ferromagnetic shield material 9, or a non-magnetic cushion material is loaded between the non-magnetic case 4 and the magnetic pole face of the permanent magnet l, so that the surface of the thin non-magnetic case 4 is This is an embodiment of a female tool A that does not come into contact with the uneven magnetic pole face of the permanent magnet 1 and make the appearance unsightly due to unevenness on the surface, and also improves the adhesion between the female tool A and the male tool B. . The use of a ferromagnetic plate or a ferromagnetic shield material 9 also has the effect of preventing magnetic leakage from the magnetic pole face.

[Effects] The engaging tool according to the present invention is constructed as described above, and in particular, since the hole 4 of the non-magnetic case 4 is funnel-shaped, the magnetic pole face can be attracted through the top wall of the non-magnetic case 4. ferromagnetic plate 3
Even if the ferromagnetic protrusion 3a provided on the permanent magnet hole 1a is misaligned with the center line of the hole 1a of the permanent magnet, it is guided by the 4° inclined surface of the hole and enters the engagement hole with a short rise. It is easy to fit because it sticks to the surface. Further, a circumferential protrusion 4e is provided on the top wall portion 4a of the non-magnetic case, which is the magnetic pole surface side to which the ferromagnetic plate 3 is attracted, and the position at which the ferromagnetic plate 3 is attracted is determined, so that there is no displacement.

Furthermore, even if a magnetic recording material such as a magnetic cart or magnetic tape comes into contact with the magnetic pole surface of the permanent magnet 1 when the ferromagnetic plate 3 is not attracted to the magnetic pole surface of the permanent magnet 1, the ferromagnetic plate 3 is bridged by the protruding edge 4e.
Since it does not stick to the magnetic pole surface, accidents such as destruction of magnetic recording are prevented.

Further, since the hole 4' has an inclined surface and is shaped like a funnel, the hole appears shallow and has a good appearance.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of one embodiment of the engaging tool according to the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a sectional view of another embodiment of the engaging tool, and FIG. 4 is a female tool. Cross-sectional views of the embodiments of FIGS. 5 to 9
The figures are cross-sectional views showing various embodiments of the fixture, and FIG. 1O is a conventional example of the engagement tool. A...Female tool, B...Male tool, l...Permanent magnet, 2.
3... Ferromagnetic plate, 2a, 3a... Ferromagnetic protrusion, 4.
...Non-magnetic case, a, b...M1 pole surface. Fig. 1 1 Fig. 22 - 1 1 a Fig. 1 51σ

Claims (1)

[Claims] 1. A ferromagnetic plate 2 is attached to one magnetic pole surface of a permanent magnet 1 having an engaging hole 1a extending from one magnetic pole surface to the other magnetic pole surface, and a ferromagnetic plate 3 is detachable from the other magnetic pole surface. At the same time, the ferromagnetic protrusion 2a and the ferromagnetic protrusion 3a protruding from the ferromagnetic plate 2 and the ferromagnetic plate 3 are attached to each other through the hole 1a. An engagement tool in which a ferromagnetic protrusion 3a protruding only from a plate 3 is attracted to a ferromagnetic plate 2, wherein the permanent magnet 1 and the ferromagnetic plate 2 have an inverted dish shape and a planar shape. The top wall has a funnel-shaped hole integrally provided with a cylindrical engagement hole through a tapered part, and the outer peripheral edge of the top wall has a protrusion perpendicular to the top wall. The permanent magnet 1 is held inward in a non-magnetic case 4 having a circumferential edge, and the engaging hole section is erected in the hole 1a of the permanent magnet 1. The ferromagnetic protrusion 3a is attracted to the ferromagnetic protrusion 2a or the ferromagnetic plate 2 through the funnel-shaped hole, and the ferromagnetic plate 3 is attracted to the top wall portion within the ridge. Fittings.