JPS6127883B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) This invention relates to a structure for attaching an engaging tool that utilizes the attraction force of a permanent magnet, and in particular, to a structure for attaching an engaging tool using the attraction force of a permanent magnet, and in particular, for mounting by a simple crushing and crimping method, the crushing and swelling of the crimped end are prevented. In particular, the present invention relates to the disclosure of an engaging tool that eliminates the problem of poor caulking caused by uneven expansion during crushing.

(Prior Art) Previously, this type of fastener that utilized the attraction force of a permanent magnet had a caulking type for attachment.

(Problems to be Solved by the Invention) However, because the pressure applied to the caulking part is not uniform, the thickness of the caulking part is not uniform, etc., caulking tends to be performed in an uneven state. . Particularly when installing a caulked pipe whose tip end is a pipe with a bottom, it is difficult to swell or crush the tip end of the tube, which often damages the other caulking member, the washer, or the mounting fabric, or There were problems such as difficulty in accurate caulking installation.

(Means for Solving the Problems) The engaging tool according to the present invention has been particularly devised in view of the inconveniences of the conventional fasteners, and includes:
The structure uses a caulking tube with a bottomed end to attach the engagement tool to handbags, bags, other bags, clothes, etc., and aims for easy and reliable attachment of the engagement tool. In order to prevent uneven expansion and crushing of the caulked portion when fastening this engaging tool, and to minimize wear and tear on the mating parts to which the caulking is attached, one magnetic pole surface a is preferable to the other magnetic pole surface b. The magnetic pole face b of the permanent magnet 1 having the hole 1a toward
The ferromagnetic plate 2 attached to the magnetic pole surface a and the ferromagnetic plate 3 removably attracted to the magnetic pole surface a have ferromagnetic protrusions 2a and 3a protruding from either or both of the ferromagnetic plate 2 and the ferromagnetic plate 3 that are attached to the magnetic pole surface a, respectively. Alternatively, in an engagement tool that is removably attracted to the ferromagnetic plates 2 and 3, a bottomed cylindrical caulking tube 4 having a flange 4' extending outward at the periphery of the opening is attached to the ferromagnetic plates 2 and 3. , 3 with the flange 4' of the caulked tube 4 in contact with one or both of the non-adsorption sides, and a small hole 6 is formed in the bottom of the caulked tube 4. It is something.

(Embodiment) An embodiment of a typical engagement tool according to the present invention will be described below with reference to the attached drawings. Reference numeral 1 denotes a permanent magnet having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface b. The permanent magnet 1 and the ferromagnetic plate 2 are arranged in a case 5, with a ferromagnetic plate 2 attached to one of the magnetic pole faces b, and a case 5 made of materials, shapes, and diameters according to the purpose. It is designed to be held in an integrated manner.

The case 5 used is generally made of a non-magnetic material, and the hole 1 is formed in the bottom of the bottom plate.
a, and the collar 5a on the edge of the hole is made to engage with the surface of the hole 1a, and the claws 5a to 5a on the edge of the opening
It is constructed by folding it onto a ferromagnetic plate 2.

Next, a ferromagnetic protrusion 2a is established on the surface of the ferromagnetic plate 2 in the hole 1a with a considerable magnetic gap between it and the hole 1a to constitute one stop A, and the ferromagnetic plate 3 and The other stop B has a ferromagnetic member 3a protrudingly attached to the top end surface of the ferromagnetic rod 2a through the hole 1a on the surface of the ferromagnetic plate 3, and each stop A flange 4' extending outward from the opening periphery on the non-attracting surfaces of the ferromagnetic plates 2 and 3 in the tools A and B
The caulked tube 4 has a bottomed cylindrical shape, and its flange 4'
are attached to the surfaces of the ferromagnetic plates 2 and 3 so as to be in contact with each other, and a small hole 6 is provided at the bottom of the caulked tube 4.

Thus, the caulking tube 4 has a small-diameter rod portion 2a of a ferromagnetic rod 2a that is separately inserted into the ferromagnetic plate 2 surface at the tip of the collar portion 4', as shown in the stops A and B in FIG.
When it is fixed integrally with caulking,
In the case where the flange 4' extending outward with the claw 5b of the case 5 is folded onto the ferromagnetic plate 2 as in the case of the stop A in Fig. 3, and in the case shown in Fig. 4. Stop B
In some cases, the ferromagnetic plate 3 is integrally attached to the surface of the ferromagnetic plate 3 by welding, brazing, or other appropriate methods, and in any of these cases, a small piece is attached to the tip of the caulked tube 4, which has a cylindrical shape with a bottom. A hole 6 is provided.

Below, various embodiments of the stops A and B will be explained in order with reference to the drawings. In the fasteners A and B in FIG. In the embodiment shown in FIG. 4, the ferromagnetic rod 2a is extended to the opening edge of the hole 1a, and the ferromagnetic rod 2a of the ferromagnetic plate 3 is extended to the opening edge of the hole 1a. The rod 3d is omitted and a retaining collar 3b is provided on the ferromagnetic plate 3 instead.

Further, in the embodiment shown in FIG. 5, the magnetic shield plate 7 is attached to the attracting magnetic pole surface a of the stopper A, and in the embodiments shown in FIGS. 6 and 7,
As an example of these changes, the case 5 is made into a simple cylindrical shape in order to reduce the manufacturing and assembly costs of the case 5, and a magnetic shield plate 7 is provided to partially replace the case 5. Furthermore, in the embodiment shown in FIG. 7, the circumferential edge of the attracting end surface of the ferromagnetic plate 3 in the case 5 is It is raised and has a protruding edge 5c.

Next, in the embodiment shown in FIG. 8, the ferromagnetic plate 2 and the permanent magnet 1 are integrally molded using plastic magnets, especially insert molding, and in FIG. 9, the ferromagnetic plate 2 and the permanent magnet 1 are 1. The magnetic shield plate 7 is integrally fixed with a plating film coated thereon. In addition, in the embodiment shown in FIG. 10, the suction end surfaces of the fasteners A and B are hemispherical to induce a sliding fit toward the hole 1a of the member 3a, and the plating film surface is spherical. As a result, it is designed to provide good plating and prevent inconveniences and wear and tear caused by uneven plating.

Furthermore, in attaching the ferromagnetic rods 2a and 3a, in addition to the caulking method as described above, the screwing method as shown in FIG. 6, the pin piercing method as shown in FIG. 7, and the welding or welding method as shown in FIG. This method uses the Rozuke method and is further fixed integrally with a plating film as shown in FIG.

(Effects) The engaging tool according to the present invention has the various features described above, and the opening of the small hole 6 allows crushing and crimping of the top end portion of the crimping tube 4.
It is made in parts.

Therefore, when the caulking tube 4 is pushed and crushed into the other flanged attachment cylinder 9 etc. through the attachment material 8, the tip of the caulking tube 4 is crushed and expanded more smoothly than the edge of the small hole 6. This prevents damage to the other mounting cylinder 9 and wear and tear of the mounting edge of the fabric 8 due to forced crushing due to excessive pressure and crushing. Inclined attachment of tools A and B or inclination of the suction surface is suppressed, a reliable suction end surface is provided, and reliable caulking is possible without slipping out.

In addition, the opening of the small hole 6 in the caulking tube 4 allows the expansion to start from the edge of the small hole 6 during crushing, and at the same time avoids the plating solution, processing acid solution, cleaning solution, etc. remaining inside during the plating process. Therefore, it is possible to prevent the occurrence of stains or corrosion on the product.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an embodiment of the engaging tool according to the present invention, FIGS. 2 to 10 are sectional views showing other embodiments, and FIG. 11 is a sectional view showing an attached state. 1... Permanent magnet, 2, 3... Ferromagnetic plate, 2a, 3a
...Ferromagnetic rod, 4...Caulking tube, 5...Case, 6...Small hole, 7...Magnetic shield plate, 8...Mounting fabric, 9...
Mounting cylinder.

Claims (1)

[Claims] 1. A ferromagnetic plate 2 attached to the magnetic pole surface b 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 plate 2 that is detachably attracted to the magnetic pole surface a. ferromagnetic protrusions 2a and 3a protruding from either or both of the ferromagnetic plates 3 and the ferromagnetic plates 3 are removably attracted to each other or to the ferromagnetic plates 2 and 3 within the hole 1a; In this case, a bottomed cylindrical caulking tube 4 having a flange 4' extending outward at the periphery of the opening is attached to one or both of the non-adsorbing sides of the ferromagnetic plates 2 and 3. An engagement tool characterized in that the flange 4' of the crimped tube 4 is fixedly attached to the flange 4, and a small hole 6 is formed in the bottom of the caulked tube 4.