JPH03260410A - Engaging tool - Google Patents

Abstract

PURPOSE:To prevent disengagement other than shift in one direction by providing an engaging plate which leads to an opening in an inserted space of a permanent magnet of an attraction tool and has a hole consisting of small and large diameter sections on a magnet pole face of the permanent magnet and an overhang guard part on ferromagnetic projection of attracted tool, respectively, and by protruding periphery in the small diameter section from the inner face of the inserted space. CONSTITUTION:An engaging plate 4 is provided on the magnetic pole face b side of a permanent magnet 1 of an attraction tool A, and a deformed hole 4a which consists of a large diameter section 4a'' of 1/2 circle or more which is connected to a semicircular small diameter section 4a' at diameter position and leads into an inserted space 5 is formed here. The inserted space 5 is slightly larger than the deformed hole 4a, and an overhang guard part 3b is formed on the end on the insertion side of a ferromagnetic projection 3a of an attracted tool B by protruding periphery on the small diameter section 4a' side from inner periphery face of the inserted space 5. Consequently, the attracting tool A and attracted tool B cannot be disengaged unless they are shifted in a specified direction.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is an engaging tool that uses a permanent magnet and is made up of an attracting tool and an attracting tool. The present invention relates to an engagement tool that is prevented from being disengaged and accidentally pulled apart.

[Prior Art] A conventional engagement tool using a permanent magnet includes a ferromagnetic plate 52 attached to one magnetic pole surface of a permanent magnet 51 having a hole 51a from one Mi magnetic pole surface to the other magnetic pole surface. A ferromagnetic plate 53 is placed on the other magnetic pole surface! I should be able to adsorb it freely,
The ferromagnetic protrusion 52a or 53a protruding from both or one of the ferromagnetic plates 52, 53 is inserted through the hole 51a to the other ferromagnetic plate 52 or 53, or the other ferromagnetic protrusion 52a or 53a. There is an engaging tool that is designed to be attracted to the ferromagnetic plate 53 and the ferromagnetic projection 53a.
2a was used, which was adapted to be suction-engaged with a suction tool A that was integrated with the suction tool A.

[Problems to be Solved by the Invention] The engagement tool configured as described above and attached to a bag, etc. can be used to lift the lid of the bag, etc., diagonally upward in the direction away from the bag body, for example. Since a polar action with the top of the lid as a fulcrum occurs, and the suction engagement between suction device B and suction device A is easily disengaged, when carrying such a bag, etc., the bottom edge of the lid C If the lid comes into contact with another object and is lifted, the lid may open without your knowledge.

In addition, for example, in the case of an engaging tool attached to a seam of clothing, etc. or a box and a lid, etc., when the engaging tool is pulled in the direction of separating the suction tool A and the suction target B, the suction will occur. Since they are engaged by force, they are relatively easy to disengage.

It is an object of the present invention to provide an engaging tool that prevents such problems.

[Means for Solving the Problems] The present invention is an engagement tool provided to achieve the above object, and includes at least a permanent magnet 1 and one magnetic pole surface a&: of the permanent magnet 1. It consists of an adsorbent A having a ferromagnetic plate 2, and an adsorbed tool B having at least a ferromagnetic plate 3 and a ferromagnetic protrusion 3a protruding from the ferromagnetic plate 3. Insertion gap 5 of the ferromagnetic protrusion 3a of the attracted tool B
is the permanent magnet 1! The ferromagnetic plate 3 of the attracted tool B is attracted to the attraction surface formed by the other pole surface of the permanent magnet 1, and the ferromagnetic protrusion 3a is provided alternately between the pole faces a and b. This engagement tool is adapted to be attracted to the ferromagnetic plate 2 or the ferromagnetic protrusion 2a protruding from the ferromagnetic plate 2 through the insertion gap 5.

The magnetic pole face of the permanent magnet 1 in the suction device A&: has a small diameter portion 4a that communicates with the opening of the insertion gap 5 on the plate surface.
A retaining plate 4 having a deformed hole 4a consisting of a large diameter portion 41 and a large diameter portion 41 is provided, and at least the periphery of the deformed hole 4a on the small diameter portion 41 side corresponds to the insertion interval l! ! The ferromagnetic protrusion 3a of the suction target B has an overhanging flange 3b on at least a part of its free end.

Further, the permanent magnet 1 is a ring plate-shaped permanent magnet 1 having an insertion gap 5 extending between both magnetic pole faces a and b, or a permanent magnet 1 consisting of a plurality of permanent magnet pieces 1' arranged in parallel in a ring plate shape. use

[Function] In the above-mentioned engagement tool, when the attachment members are pulled toward the side where they are separated from each other, the ferromagnetic protrusion 3a of the adsorbed tool B fits into the small diameter portion 4a' of the deformed hole 4a in the adsorption tool A. If they are installed so that they match, even if a force is applied to separate the rIIL fixture A and the suction target B, the overhanging flange 3b of the ferromagnetic protrusion 3a will hold the suction fixture A.
Since it fits between the circumferential edge of the deformed hole 4a of the engagement plate 4 on the small diameter portion 41 side and the inner circumferential surface of the insertion gap 5, the attachment does not come off.

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

In FIG. 1, A indicates an adsorption tool, and 1 indicates a permanent magnet, such as a ferrite magnet, a rare earth magnet, a plastic magnet,
A rubber magnet or the like is used, and a thank-you insertion gap 5 is provided from one magnetic pole surface a to the other magnetic pole surface b.

2 is a disk-shaped ferromagnetic plate with the same diameter as the magnetic pole surface a, which is attached to one magnetic pole surface a of the permanent magnet 1 by adhesive, molding, or other means; l! ! It is a ferromagnetic protrusion that is erected toward the inside of 5.

Reference numeral 4 denotes a retaining plate having substantially the same shape as the magnetic pole face and having a deformed hole 4b attached to the other magnetic pole face of the permanent magnet 1 by adhesive, molding, etc., and the deformed hole 4a of the retaining plate 4 is As shown in FIGS. 3 to 5, the semicircular small diameter portion 4
It consists of a large diameter portion 41 larger than an H circle that connects at the diameter position of 1, and the permanent magnet 1 is inserted between ll! It is connected to 5. Further, the large diameter portion 4a'' may be provided with a depressed edge 4b along the circumferential surface of the permanent magnet 1 as shown in FIG.

The retaining plate 4 may be a plastic plate, a non-magnetic metal plate, or a ferromagnetic metal plate, and in the case of a ferromagnetic metal plate, it has an effect as a magnetic shield plate.

In addition, if the retaining plate 4 and the ferromagnetic plate 2 are glued to the surface of the permanent magnet 1 as shown in FIGS. 7 and 8, they may be attached to the permanent magnet 1 by molding as shown in FIG. If the case 7 has a plurality of locking claws 7a and 7b on the curved surfaces at both ends of the cylindrical body, as shown in Fig.
There are cases where the locking claws 7a and 7b are folded back and attached onto the ferromagnetic plate 2 and the retaining plate 4 surface.

The insertion gap 5 of the permanent magnet 1 is slightly larger than the deformed hole 4a and has an oval shape similar to the deformed hole 4a, as shown in FIGS. 3 and 4, or a hole with a larger diameter than the opening 4a. In addition, there are cases where the permanent magnet 1 is a buried plate-like permanent magnet with an insertion gap 5 extending between both magnetic pole faces a and b, and a case where a plurality of permanent magnet pieces 1° are buried as shown in Fig. 6. In some cases, they are arranged in a plate shape and have an insertion gap 5.

And path 1! IIs 4 The periphery on the a' side is the insertion distance l! in the permanent magnet 1! It protrudes from the inner peripheral surface of Ii5.

3 is the permanent magnet in adsorption tool A! The ferromagnetic plate is disk-shaped and is attracted to the attraction surface formed by the Mi magnetic pole surface of the ferromagnetic plate 3, and the ferromagnetic protrusion 3a is protruded approximately at the center of the ferromagnetic plate 3 to constitute the attracted tool B. An overhanging flange 3b as shown in FIGS. 9 and 10 on a part of the free @ side of the ferromagnetic protrusion 3a or on the entire circumference
is provided.

As shown in FIG.
The ferromagnetic plate 3 is attracted to the attraction surface formed by the magnetic pole face of the permanent magnet 1, and the ferromagnetic protrusions 2a and 3a are also attracted to each other, and the ferromagnetic plate 2 has protrusions as shown in FIG. Not provided,
There are cases in which the ferromagnetic protrusions 3a are provided only on the ferromagnetic plate 3 so that the ferromagnetic plate 3 is attracted to the attracting surface, and the ferromagnetic protrusions 3a are directly attracted to the ferromagnetic plate 2.

In addition, the ferromagnetic protrusions 2a and 3a may be manufactured separately from the ferromagnetic plate 2.3 and caulked to the ferromagnetic plate 2.3.
In some cases, they are integrated with the ferromagnetic plate 2.3 by welding or brazing, and in other cases, they are formed integrally with the ferromagnetic plate 2.36.Furthermore, the ferromagnetic protrusion 2a or 3a is used as a fixture for the adsorbing tool A and the adsorbed tool B. a small-diameter ring portion 2a' provided coaxially with the
A pair of legs bent into a U-shape as shown in FIG. 6a through the hole in the center of the leg plate 6 and crimped onto the leg plate 6,
When the ferromagnetic protrusions 2a, 31, the ferromagnetic plates 2.3 and the leg plate 6 are fixed together, and when the leg plate 6 is welded to the ferromagnetic plate 2 as shown in FIG. There are pipes that can be attached by inserting them into the pipe and bending them, and pipes with a tlii4-shaped caulking pipe 8 with one end widened as shown in Figure 13.
is welded to the surface of the ferromagnetic plate 2.3, or as shown in FIG. The small diameter frame of the magnetic protrusion is caulked to a ferromagnetic plate, and the engaging tool is caulked to a hole in a mounting member such as a bag to which the engagement tool is attached, and the ferromagnetic protrusion 2a, 3a as shown in FIG. The free ends of the narrow-diameter frame parts 2a' and 3a' are shaped like bolts or wood screws to be screwed onto the mounting surface, and the narrow-diameter frames provided on the ferromagnetic projections 2a and 3a as shown in Fig. Frame part 2
a', insert the free end side of 31 into a bottle shape into the mounting surface,
A steel plate 9 having a cross-shaped cut is used, and the tips of the narrow-diameter frame portions 2a' and 3a' are inserted and attached to the intersection of the cuts.

In addition, in order to attach an engaging tool such as a necklace to the cheno, as shown in FIG. is bent along the side surface of the suction tool A, and a portion 3c that is bent flush with the ferromagnetic plate 2 is provided with a locking portion for the Cheno lO.

In addition, the engaging tool shown in FIG. 14 has the engaging claw 7b of the cylindrical case 7 of the suction tool A protruding from the outer surface of the engaging plate 4, and is folded back onto this outer surface to engage the engaging plate 4. At the same time, a circular projecting edge 7b' is provided along the circumferential surface of the retaining plate 4, and this projecting edge 7b' acts as a bridge for the magnetic card or magnetic tape that comes into contact with the suction surface side, thereby attracting the magnetic card or magnetic tape. It is designed so that it does not come into close contact with the surface, so that magnetic lines of force do not have an adverse effect on magnetic recording on magnetic cards and magnetic tapes.

The above-mentioned engaging tool can be installed by attaching the suction tool A with the small diameter part 41 side of the deformed hole 4a of the engaging plate 4 facing the seam of clothing, the direction in which bags, etc. and lids, boxes and lids, etc. are moved. The protruding flange 3b of the ferromagnetic protrusion 3a of the attracted tool B is engaged between the periphery of the deformed hole 4a on the small diameter section 41 side and the inner peripheral surface of the insertion gap wi, 5 of the permanent magnet 1, and the attracted tool Needless to say, in the case of a force that pulls B apart in a direction parallel to the suction surface of the suction tool A, the engagement does not come off even in the case of a force that pulls B apart in a direction perpendicular to the suction surface.

[Effect] The engagement tool according to the present invention is configured as described above,
In particular, the magnetic pole surface of the permanent magnet in the adsorption tool is provided with a retaining plate having a deformed hole consisting of a small diameter part and a large diameter part communicating with the opening of the insertion gap, and at least the small diameter part of the deformed hole. The side peripheral edge protrudes from the inner circumferential surface of the insertion gap, and the ferromagnetic protrusion of the attracting tool has an overhanging flange on at least a part of the free end side, so that the attachment members of the engaging tool can be pulled together. If it is installed so that the ferromagnetic protrusion of the suction tool fits into the small diameter side of the deformed hole of the retaining plate of the suction tool when it is pulled toward the side to be separated, the attachment member and the suction tool can be attached to each other. Even if a force is applied to pull the tool apart, the overhanging flange part remains firmly fitted into the gap on the small diameter side of the opening, so that the attachment does not come off.

Furthermore, if the periphery of the large-diameter side is made flush with the inner circumferential surface of the insertion gap, the ferromagnetic protrusion of the suction tool can be applied to the inner circumferential surface of the large-diameter side as a guide when disengaging the engagement. If you pull it apart, the overhanging flange will easily come off without getting caught.

Further, by using a ferromagnetic plate for the abutment plate, a magnetic shielding effect can be provided.

[Brief explanation of drawings]

Figure 'f%1 is a cross-sectional view of one embodiment of the engaging tool according to the present invention, Figure 4%2 is a cross-sectional view of another embodiment, and Figures 3 to 5 are a case opening and insertion of a permanent magnet. A plan view showing the relationship with the gap, TiJ6 is a perspective view of the suction tool, FIGS. 7 and 8 are cross-sectional views of the suction tool showing a cross section through the small diameter part and the large diameter part, and FIGS. 9 and 's10. are cross-sectional views of various embodiments of the suction target, the 11th
17 are cross-sectional views showing various embodiments of the engaging tool, and FIG. 18 is a cross-sectional view of a conventional example of the engaging tool. A...Adsorption tool, B...Adsorbed tool, a, b...Magnetic pole surface, 1...Permanent magnet, 2.3...Ferromagnetic plate, 2a,
3a... Ferromagnetic protrusion, 4... Engagement plate, 5... Insertion gap.

Claims (3)

[Claims] 1. An adsorption tool having at least a permanent magnet 1 and a ferromagnetic plate 2 attached to one magnetic pole surface of the permanent magnet 1; at least a ferromagnetic plate 3 and a ferromagnetic plate protruding from the ferromagnetic plate an adsorbed tool having a protrusion 3a, the adsorbing tool is provided with an insertion gap for the ferromagnetic protrusion 3a of the adsorbed tool extending between the magnetic pole faces of the permanent magnet 1; The ferromagnetic plate 3 of the tool is attracted to the attraction surface formed by the other magnetic pole surface of the permanent magnet 1, and the ferromagnetic protrusion 3a is protruded from the ferromagnetic plate 2 or the ferromagnetic plate 2 through the insertion gap. This is an engaging tool that attracts the ferromagnetic protrusion 2a, which has a magnetic pole surface b of the permanent magnet 1 in the attracting tool. A retaining plate having a deformed hole is provided, and at least a peripheral edge of the deformed hole on the small diameter side protrudes from an inner peripheral surface of the insertion gap, and a ferromagnetic protrusion of the suction target is located at least on the free end side. An engagement tool characterized in that both parts have an overhanging flange part. 2. 2. The engagement tool according to claim 1, wherein the permanent magnet is an annular plate-shaped permanent magnet having a through hole extending between both magnetic pole surfaces. 3. 2. The engagement tool according to claim 1, wherein the permanent magnet is composed of a plurality of permanent magnet pieces arranged in an annular plate shape.