JPS6127881B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the disclosure of a simple mounting structure for an engagement tool using a permanent magnet.

(Prior Art) The conventional method of attaching an engaging tool using this type of permanent magnet was to provide a washer having a bent leg or the like on the back side of the engaging tool.

(Problems to be Solved by the Invention) However, in such a method, the bent legs are exposed on the mounting surface of the bag, etc., and the decoration is not necessarily satisfactory. There were problems such as the lack of direction.

(Means for Solving the Problems) The engaging tool according to the present invention has been specially devised in view of the inconveniences in the prior art, and uses the method of attaching the engaging tool itself to each of the permanent magnets. The ferromagnetic rods 2a, 3a which connect the ferromagnetic plates 2, 3 forming a magnetic field to form a magnetic closed circuit are used, and a bottomed tubular mounting member 4 is installed at the same time as the ferromagnetic rods 2a, 3a.
In addition, a bottomed tubular member is especially prepared as the engaging member 4, and the end edge of the mounting member 4 is expanded and caulked, or a pipe-shaped member facing inside or outside of the tubular portion 4' of the mounting member is used. One magnetic pole surface a is installed so that the engaging tool can be oriented in any direction by press-fitting or fitting the mounting part.
The ferromagnetic plate 2 attached to the magnetic pole face b of the permanent magnet 1 having the hole 1a facing the other magnetic pole face b, and the ferromagnetic plate 3 that is brought into contact with and attracted to the magnetic pole face a are protruded from either or both of them. In an engagement tool in which the provided ferromagnetic protrusions 2a, 3a are removably attracted to each other or to the ferromagnetic plate 2 or 3 within the hole 1a, the ferromagnetic rods 2a, 3a have large diameter heads. 2a', 3a', and narrow diameter mounting necks 2a'', 3a'', and the ferromagnetic plates 2, 3 have insertion holes 2b, 3 for the necks 2a'', 3a''.
b is open and one end is open, which is a relatively short bottomed tubular shape, and the neck portion 2 of the ferromagnetic rods 2a, 3a is attached to the bottom 4'' of the tubular portion 4'.
A mounting member 4 having insertion holes 4a of holes 4a" and 3a" is attached to the non-adsorption side surface of either or both of the ferromagnetic plates 2, 3 with the bottom 4" in contact with the ferromagnetic plates 2, 3. The ferromagnetic rods 2a, 3a are
The neck portions 2a'', 3a'' of the permanent magnet 1 are inserted into the holes 2b, 3b, and 4a of the ferromagnetic plates 2, 3 and the mounting member 4, and are erected in the hole 1a of the permanent magnet 1,
The neck portions 2a'', 3a'' protruding into the tubular portion 4' of the mounting member 4 are crimped to the bottom portion 4 of the tubular portion 4'.

(Embodiment) A typical embodiment of the engaging tool according to the present invention will be described below with reference to FIG.
It is a permanent magnet with a hole 1a opened toward the other magnetic pole surface b, and is a ferrite magnet, a rare earth magnet,
It is planned to use steel bar magnets or plastic magnets.

A ferromagnetic plate 2 is attached to one magnetic pole face b of such a magnet 1, and this is fixed integrally to the magnet 1 using an inverted dish-shaped case 5 fitted over the magnet 1. At the same time, the ferromagnetic rod 2a is attached to the large diameter head 2.
a' and a small-diameter mounting neck 2a'', and the ferromagnetic plate 2 is provided with a through hole 2b for the neck 2a'', and one end is open. In addition, the mounting member 4, in which the insertion hole 4a of the neck 2a'' of the ferromagnetic rod 2a is opened at the bottom 4'' of the tubular portion 4', is brought into contact with the non-adsorption side surface of the ferromagnetic plate 2 with the bottom 4''. The ferromagnetic rod 2
a has its neck 2a'' inserted through the insertion holes 2b and 4a of the ferromagnetic plate 2 and the mounting member 4, and the permanent magnet 1
The mounting member 4 is erected in the hole 1a of the mounting member 4.
The neck portion 2a'' protruding into the tubular portion 4' is one of the engaging tools A that is crimped to the bottom portion 4 of the tubular portion 4'.

The mounting member 4 is in the shape of a bottomed tube and is made of an appropriate material such as a metal material or a synthetic resin material. It has an edge collar 5a that engages the edge of the opening, and a ferromagnetic plate 2 on the edge of the opening.
An inverted dish-like structure made of non-magnetic material and having claws 5b that are folded into the surface is planned.

In contrast to such one engagement tool A, the other engagement tool B includes a ferromagnetic plate 3 that is brought into contact with the free magnetic pole surface a of the magnet 1 so as to be freely magnetically attached, and a ferromagnetic plate 2 that is connected to the ferromagnetic plate 2 via the ferromagnetic plate 1a. Or, it has a ferromagnetic rod 3a that reaches the ferromagnetic rod 2a, and the mounting member 4 is attached to the ferromagnetic rod 3 in the same way as the ferromagnetic rod 2a and the mounting member 4 are caulked to the ferromagnetic plate 2.
A ferromagnetic rod 3a is erected on the ferromagnetic plate 3 so as to be inserted into the insertion hole 4a of the bottom 4'' of the mounting member 4 with the neck 3a'' having a small diameter at a and crimped.

In contrast to such a basic configuration example, the embodiment shown in FIG. 4 attaches a ferromagnetic plate 6 for magnetic shielding to the vacant magnetic pole surface a of the magnet 1, and uses magnetic lines of force to generate a magnetic tape, etc. Destruction of the magnetic recording portion is reliably prevented, and the embodiment shown in FIG. 5 has a shoulder 5c that raises the periphery of the ferromagnetic plate 6 in the case 5 in order to promote such a magnetic shielding effect. This is what I did.

Furthermore, in the embodiment shown in FIG. 6, the case 5 is particularly cylindrical to improve the ease of assembling the magnet 1, ferromagnetic plate 2, etc. to the case 5, and the embodiment shown in FIGS.
In the embodiment shown in FIG. 9, the case 5 is omitted and the magnet 1 is directly attached to the ferromagnetic plate 2 by adhesive or other means, and it is generally planned to use a plastic magnet or the like. It is something that

Furthermore, in the embodiment shown in FIG. 9, the end surface of the magnet 1 in contact with the ferromagnetic plate 3 is rounded or tapered as an inclined surface extending through the hole 1a to improve the slip-fitting performance of the ferromagnetic rod 3a. It was rated as good.

An engagement tool having such a structure inserts the attachment member 4 into the fabric at the opening of a handbag, clothing, or small container, and directly connects the tubular portion 4' end of the attachment member 4 inserted into the other end of the fabric. In addition to expansion caulking or expansion caulking using washers, various pipe-shaped fittings 7, 8, and 9 shown in Figs. 1 to 3 are press-fitted into the tubular portion 4'. It is designed to be fixed by being fitted or press-fitted.

In the embodiment shown in FIG. 1, the fitting 7 having a bottomed funnel shape is press-fitted into the tubular portion of the mounting member 4, and in the embodiment shown in FIG. Attach the mounting member 4 to the mounting fixture 8 that forms the
In addition, the example shown in FIG. 3 is a method in which the decorative button 10 in FIGS. A method is shown in which only the fixture 9 is omitted and a washer 11 is used instead.

These attachment methods are exactly the same when attaching the engaging tool A shown in Figs. It is planned to be used as an assembly.

The caulking of the attachment member 4 may be applied to only one of the pair of engagement tools A and B, and the other may be caulked by a different method.

The engaging tool according to the present invention has the above-mentioned features, in particular, the mounting member 4 is integrally caulked with the ferromagnetic rods 2a, 3a, and the engaging tool is mounted using the mounting member 4. By doing so, specific effects of the above-mentioned characteristics can be expected.

That is, since the number of parts required for assembly is small and the assembly is easy, manufacturing and assembly costs can be reduced, and installation is performed using the circular tubular mounting member 4. Since there is no directionality of the attachment, the orientation of the attachment and attachment can be changed freely, and the attachment is based on crushing and caulking, making the attachment of the attachment and attachment particularly reliable. In addition, since there is only one mounting hole to open and the hole is circular, it is easy and quick, reducing the time and effort required for installation and minimizing the occurrence of defective products during installation. The effectiveness of various characteristics such as these is promised.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a pair of engagement tools, Fig. 2 is a cross-sectional view of a pair of engaging tools;
FIG. 3 is a sectional view of one engagement tool, and FIGS. 4 to 9 are sectional views of the other engagement tool. 1... Magnet, 2, 3... Ferromagnetic plate, 4... Mounting member,
5... Case, 6... Ferromagnetic plate, 7-9... Mounting tools are shown.

Claims (1)

[Scope of 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 magnetic plate 2 that is brought into contact with and attracted to the magnetic pole surface a. In the engagement tool in which ferromagnetic protrusions 2a and 3a protruding from either or both of the magnetic plate 3 are removably attracted to each other or to the ferromagnetic plate 2 or 3 within the hole 1a, The ferromagnetic rods 2a, 3a have large diameter heads 2a', 3
a' and narrow diameter mounting necks 2a'', 3a'', and insertion holes 2b, 3b of the necks 2a'', 3a'' are opened in the ferromagnetic plates 2, 3, and one end is A mounting member which is in the shape of a relatively short open bottomed tube, and in which the insertion hole 4a of the neck portions 2a'', 3a'' of the ferromagnetic rods 2a, 3a is opened at the bottom 4'' of the tubular portion 4'. 4 on the non-adsorption side surface of both or one of the ferromagnetic plates 2 and 3 at the bottom 4''.
are attached in contact with each other, and the ferromagnetic rods 2a, 3a are attached to the ferromagnetic rods 2a, 3a.
The neck portions 2a'', 3a'' of 3a are inserted into the holes 2b, 3b, and 4a of the ferromagnetic plates 2, 3 and the mounting member 4, and are erected in the hole 1a of the permanent magnet 1, and the mounting member An engagement tool characterized in that the neck portions 2a'', 3a'' protruding into the tubular portion 4' of 4 are caulked to the bottom portion 4'' of the tubular portion 4'.