JPH03230503A - Engaging tool - Google Patents

Abstract

PURPOSE:To facilitate engaging operation by clamping the engaging hole part of a nonmagnetic case so as to rise in the hole of a permanent magnet, and attracting a ferromagnetic protrusion via a funnel type hole with a ferromagnetic plate. CONSTITUTION:A funnel type hole 4' of a nonmagnetic case 4 makes an engaging hole part 4c rise in a hole 1a of a permanent magnet 1. When a ferromagnetic plate 2 attracts a ferromagnetic protrusion 3a protruding from a ferromagnetic plate 3 via the hole 1a, the ferromagnetic protrusion 3a is guided to the engaging hole part 4c by the taper part 4b of the funel type hole 4', even when deviation exists between the center line of the ferromagnetic protrusion 3a and that of the hole 1a of the permanent magnet 1. Thereby engaging operation is facilitated, and the periphery of the hole 1a of the permanent magnet 1 is not damaged.

Description

[Detailed Description of the Invention] [Industrial Application Field] 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. The permanent magnet of the female part of the engagement tool is covered with a non-magnetic case, and the part of the case that covers the hole of the permanent magnet has an inclined surface facing inwards, making it easy for the protrusion of the male part to fit into it. , and relates to an engagement tool that is easy to manufacture.

[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 the ferromagnetic plate 52 are integrated by adhesive molding, welding, etc., or the case 54 is inverted and fitted into a non-6R case 54 having a hole in the top wall that communicates with the hole 51a of the permanent magnet 51. etc. were used.

[Problem to be Solved by the Invention 1] However, in the above engagement tool, the hole 51a of the permanent 6n stone 51 has the same diameter between both KB pole faces, and the strong 6n protrusion S3a is inserted into the hole 51a. Insert it and force 6n
Fitting cannot be performed unless the sexual plate 52 or the strong enzymatic protrusion 53a are aligned, and the engagement operation is troublesome.

In addition, since the ferromagnetic protrusion 53a hits the opening of the permanent magnet 51, the periphery of the opening may be chipped or the periphery may be damaged if the permanent 6fi stone is exposed. There was a fortune telling.

The present invention addresses the above-mentioned point M, eliminates the risk of damage to the permanent 6R stone, is easy to manufacture, has a good appearance, and facilitates the insertion operation of the strong Iin protrusion during engagement. The purpose is to provide an engaging tool.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides one magnetic pole of a permanent magnet l 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 a tapered portion 4b.
A permanent magnet l and a ferromagnetic plate 2 are placed in a non-magnetic case 4 having a funnel-shaped hole 4° provided in the body, with the permanent magnet l facing inward, and a hole 1a of the permanent magnet l. The engaging hole portion 4c is held in such a way that it stands up, and the ferromagnetic protrusion 3a is attracted to the ferromagnetic protrusion 2a or the ferromagnetic plate 2 through the funnel-shaped hole 4'. It is.

[Function] The above-mentioned engagement tool protrudes from the ferromagnetic plate 3 because the funnel-shaped hole 4° of the non-6R case 4 makes the engagement hole 4C stand up in the hole 1a of the permanent 6a stone 1. When the ferromagnetic protrusion 3a is attracted to the ferromagnetic protrusion 2a of the ferromagnetic plate 2 or the ferromagnetic plate 2 through the hole 1a, the ferromagnetic protrusion 3a and the hole 1a of the permanent magnet are attached.
Even if there is a deviation in the center line between the ferromagnetic projection 3a and the ferromagnetic projection 3a, the ferromagnetic projection 3a is guided to the engagement hole 4c by the 4° tapered portion 4b of the funnel-shaped hole, making it extremely easy to insert the ferromagnetic projection 3a. There is no damage to the hole 1a portion of the permanent magnet.

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

1 is a permanent magnet, and a ferrite magnet, a rare earth magnet, a plastic magnet, a rubber magnet, etc. is used, and a hole 1a is formed through it 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 part of the taper narrowing from one face m1 to the other magnetic pole face a, and the cross-sectional shape is circular, elliptical, rectangular, etc. There is. Note that the hole 1a may be composed of 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 adsorbed and attached to the magnetic pole surface a of the permanent magnet.

5 is a disc-shaped seat plate with the same diameter as the ferromagnetic t2ii2. A pair of incisions are made from the periphery across the center, and the part between the pair of notches is bent perpendicularly to the seat plate 5 to form legs. 5a, 5a.

4 is a non-magnetic case that holds the permanent magnet l, the ferromagnetic plate 2, and the seat plate 5 superimposed on the ferromagnetic plate 2, and is in the shape of an inverted dish, and has a top wall portion 4a. The center has a funnel-shaped hole 4° in which a cylindrical engagement hole 4c is integrally provided via a tapered portion 4b.

The permanent magnet 1, the ferromagnetic plate 2, and the seat 12ii5 are inserted with the permanent magnet 1 inward and the magnetic pole face facing the top wall 4a, and the inside of the hole 1a of the permanent magnet is in the non-magnetic case 4. The 4° portion of the funnel-shaped hole covers the entire surface, and when the top wall 4a of the non-magnetic case 4 and the peripheral wall face the magnetic pole, the peripheral surfaces of the permanent magnet, the ferromagnetic plate 2, and the seat plate 5 are covered. 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 seat plate 5 surface so that the permanent magnet, the ferromagnetic plate 2, and the seat plate 5 are placed inside the non-magnetic case 4. They are held together to form a female tool A.

3 is a disc-shaped ferromagnetic plate with approximately the same diameter as the magnetic pole face of the permanent magnet in the female tool A, which is attracted to the magnetic pole face of the permanent magnet via the non-magnetic case 4, and there is a coaxial small diameter ring approximately in the center. The strong 6n protrusion 3a having the part 3a' is attached to the small diameter ring part 3a in the hole of the strong 6fl sexual plate 3.
' is inserted, and the small diameter ring part 3a' is inserted into the hole in the center of the leg plate 6 having a pair of bent legs 6a, 6a formed in a U shape and caulked, and the ferromagnetic plate 3 and the leg plate 6 are are fixed together and a strong Gn protrusion 3a is erected on the ferromagnetic plate 3,
A male tool B is configured.

The female tool A and the male tool B of this engagement tool are attached by inserting the respective legs 5a and 6a into the mounting plate and bending them. The magnetic plate 3 is attracted to the ferromagnetic plate 2 via the ferromagnetic plate 2, and the strong 6N plate 3 is attracted to and engaged with the magnetic pole facing side of the female tool A.

In the suction device shown in FIG. 3, the hole 1a of the permanent magnet 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 engagement hole 4c is It is filled with a non-magnetic tubular member 7.

Further, the female tool A is also provided with a ferromagnetic protrusion 2a, and a narrow diameter ring 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. Then, wrap the expanded periphery around the periphery of the disk and insert it into the disk part of the integrated mounting tube 8 and swage it. Then, the ferromagnetic protrusion 2a is erected on the 2 surfaces of the root, and the mounting tube is 8 is attached integrally with these, and a permanent magnet l and a 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-described embodiments, attachments for the male tool B or female tool A include one in which the closed end of the tube 8 is an open end, one in which the narrow diameter ring portion of the ferromagnetic protrusion is bottle-shaped, A wood screw or bolt shape is used, and it can be attached to a bag, etc. by caulking, piercing, screwing, adhesion, adhesion, welding, etc., or it can be attached to a double-top adhesive sheet without using any attachments. In some cases, it may be attached using adhesive or the like.

Figure 4 shows that one end of the ferromagnetic plate 2 of the female tool A is extended to a side bar, and a chain 9 is attached to this extension (F, the ferromagnetic plate 3 of the male tool B
Bend one end at a right angle along the side of the magnetic case 41 of the female tool A, and attach one end of the chain 9 to one end of this bent part 3b (T to connect the chain 9). In this case, even if there is a deviation in the distance X between the bent part 3b of the male tool B and the side surface of the female tool A, the 4° taper part 4 of the hole
Since the ferromagnetic spring 3a is guided to the engagement hole 4c by b, the shear force is corrected, and the bent part 3b of the male tool B engages with the side strain of the female tool A in a main contact shape. .

Figure 5 shows a thin non-6R case by loading a strong 6N plate or ferromagnetic shielding material 10 or a non-magnetic cushion material between the non-6N case 4 and the 6I pole face of the permanent magnet. The female tool A is designed so that the surface 4 does not come into contact with the convex magnetic pole face of the permanent magnet work, causing unevenness on the surface and making the appearance unsightly, and also improves the adhesion between the female tool A and the male tool B. This is an example. The use of a ferromagnetic plate or a ferromagnetic shielding material 10 also has the effect of preventing 6n air leakage from the magnetic pole face.

[Effect] The engaging tool according to the present invention is configured as described above, and in particular, the hole 4° of the non-magnetic case 4 is funnel-shaped, so that 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. Therefore, the periphery of the hole 1a of the permanent magnet will not be damaged.

Also, 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 engagement tool according to the present invention, FIG. 2 is a sectional view thereof, and FIGS. 3 and 4 are sectional views of other embodiments of the engagement tool, Fig. 5 is a sectional view of an embodiment of the female fitting;
FIGS. 1 through 1θ are cross-sectional views showing various embodiments of the fixture, and FIG. 11 is a conventional example of the engagement tool. A... Female tool, B... Male tool, 1... Permanent magnet, 2.
3... Strong 6n plate, 2a, 3a ・Ferromagnetic protrusion, 4.
・・Non-6fi case, a, b-・6a polar surface.

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 permanent magnet is placed inside a non-magnetic case 4 having a funnel-shaped hole in which a cylindrical engagement hole is integrally provided through a tapered part on the top wall of the permanent magnet. The engaging hole portion is held in the hole 1a of the magnet 1 so as to stand up, and the ferromagnetic protrusion 3a is attracted to the ferromagnetic protrusion 2a or the ferromagnetic plate 2 through the funnel-shaped hole. Features an engaging tool.