JPH0316261Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a magnetic latching device used for fastenings of bags, handbags, etc., buttons for clothes, etc.

(Prior art) Conventionally, magnetic latches used for fasteners for bags, handbags, etc., buttons for clothing, etc. have a female stop that has a built-in permanent magnet, and a female stop that is removably attracted to the female stop. Magnetic latches are known which are comprised of a male stop.

The male stop part is attracted by the magnetic force of a permanent magnet built into the female stop part, but various improvements have been made to increase the attraction force, and at present, the magnetic force generated by the permanent magnet is improved. A structure in which the lines of magnetic force are locally concentrated and the convex part of the male stop part is attracted to the convex part is often used (for example, Utility Model Publication No. 61-1685, Utility Model Publication No. 59-31883).

(Problems to be Solved by the Invention) In the above-mentioned magnetic latching tool, a recess is formed on the female stop side, and a convex part is formed on the male stop side, and the convex part Although the structure was such that the maximum adsorption force could be exerted when the protrusion was fitted into the recess, it was almost inevitable that the protrusion would also be adsorbed around the recess. In this case, the suction operation involves sliding the male stop to make the protrusion match and fit into the recess. There was a problem in that the surface of the cover that covered the cover was scratched by the protrusions.

The cover is usually formed from a non-magnetic material such as a brass plate into a capped cylinder shape, and the surface is plated. A problem has arisen in which not only the commercial value of the product is damaged, but also the commercial value of objects such as bags, handbags, etc. to which the magnetic latches are attached is also damaged.

(Means for solving the problem) The magnetic latching tool of this invention solves the problem caused by the sliding of the male stop by providing an engraved pattern on the surface of the cover that constitutes the female stop. It is.

That is, the magnetic latching device of this invention is a magnetic latching device composed of a female stop portion containing a permanent magnet and a male stop portion that is removably attracted to the female stop portion. On the surface of the metal cover that made up the outer shell,
It is characterized by an engraved pattern.

The engraved pattern may be provided on the entire surface of the metal cover, or may be provided on a part of the surface.

(Function of the invention) According to the magnetic holder of this invention, even if the part provided with the engraved pattern is scratched by the sliding contact of the convex part of the male stop part, it will not be noticeable in appearance. In addition, by providing the engraved pattern, the metal cover is work-hardened, making it less likely to be damaged by sliding contact.

(Example) An example of this invention will be described below with reference to the drawings.

The figure shows a round magnetic hook 1, which is composed of a female stopper 2 shown in FIG. 4 and a male stopper 3 shown in FIG. As shown in FIG.
, a cylindrical permanent magnet 5 magnetized in the direction of the front and back surfaces.
are stacked on top of each other, the disk 4 and the permanent magnet 5 are covered with a cover 6 made of non-magnetic metal (for example, brass), and are integrated, and at the same time, it is inserted into the center hole 7 of the permanent magnet 5 up to the middle part of the center hole 7. It is constructed by disposing a core bar 8 made of ferromagnetic material (for example, iron) and having a height that reaches the same height as the base plate.
A fixing rod 9 is connected to the core metal 8, and the disk 4
The disk 4 and the core metal are inserted into the hole 10 drilled in the center of the disk 4 and into the hole 12 of the U-shaped mounting leg 11 arranged on the outer surface of the disk 4, and the tip of the fixing rod 9 is caulked. 8 and mounting legs 11 are integrated.

In the above, the cover 6 has a capped cylindrical shape as shown in the figure, and an inner cylindrical wall 1 is fitted in the center of the top plate 6a along the hole wall of the central hole 7 of the permanent magnet 5.
As shown in FIG.
3 is provided. FIG. 8 is an enlarged view of a part of the engraved pattern 13, and the surface of the top plate 6a has an uneven surface 13a as shown in FIG. The engraved pattern 13 may be provided before the cover 6 is molded or after the cover 6 is molded.
In either case, after the cover 6 is molded, it is desirable to finally form a plating layer on the surface to make the surface beautiful.

On the other hand, the male stop portion 3 is composed of a disk 14 made of a ferromagnetic material (for example, iron) and a core bar 15 having a diameter substantially the same as the outer diameter of the cover 6. The core bar 15, like the core bar 8 of the female stop part 2, is connected with a fixing rod 16, and has a hole 17 in the disk 14 and a hole 19 in the mounting leg 18.
By inserting it into the hole and caulking the tip,
A disk 14, a core metal 15, and a mounting leg 18 are integrated. The height of the core bar 15 is such that when the core bar 15 is inserted into the center hole 7 of the permanent magnet 5 of the female stop 2 and comes into contact with the core bar 8, the lower surface of the disk 14 is just above the top plate surface of the cover 6. It is designed so that it comes into contact with the

As shown in FIG. 7, the lower surface of the disc 14 is provided with a textured engraved pattern 20 similar to the top plate 6a of the cover 6, but the engraved pattern 2 on the disc 14 side is
0 is not essential in this invention.

As shown by the chain lines in FIG. 1, the magnetic holder 1 of the above embodiment has the mounting legs 11 and 18 passed through the mounting position of the object such as the side wall of the handbag body and the lid, and the end portions are folded. Fold it up and secure it.

The male stop part 3 has a protrusion formed by the core bar 15 that fits into a recess in the center hole 7 of the permanent magnet 5 of the female stop part 2.
When the core metal 15 and the core metal 8 are brought into contact, the lines of magnetic force of the permanent magnet 5 are as follows: disk 14 , core metal 15 , core metal 8 , disk 4
flows through a complete magnetic circuit. However, core metal 1
In the parts 5 and 8, the cross-sectional area of the magnetic path is made smaller and the density of the lines of magnetic force is increased, so that the male stop part 3 is the same as the female stop part 2.
is strongly adsorbed to.

During the operation of fitting the protrusion of the male stopper 3 into the recess of the female stopper 2, the protrusion, ie, the core metal 15, may come into contact with the surface of the top plate 6a of the cover 6. In this case, since the core metal 15 is also attracted to the surface of the top plate 6a by magnetic force, the subsequent operations are performed by sliding the core metal 15 while being attracted to the surface of the top plate 6a.
The core metal 15 is slid to match the recess of the female stop 2, that is, the center hole 7 of the permanent magnet 5.

Conventionally, during this sliding, sliding damage was applied to the surface of the top plate 6a of the cover 6 by the core metal 15, but in this embodiment, the top plate 6a of the cover 6
Since the embossed pattern 13 is provided on the surface of the top plate 6a, the hardness caused by the embossed process occurs in the top plate 6a, making it difficult to get scratches from sliding, and even if it does get on the plate, it will not cause scratches from rubbing. It can be done discreetly.

Regarding the work hardening, it is also possible to make the material forming the cover 6 thinner. By the way, in the past, in order to prevent the occurrence of unevenness on the top plate part, 0.2 ~
It was formed from a brass plate with a thickness of 0.15 mm, but it is possible to reduce this thickness. In this respect, it is also effective to provide the engraved pattern 13 on the entire surface of the cover 6.

Although the engraved pattern 13 has a cloth pattern in the embodiment, it is not limited to this pattern, and can be changed as appropriate depending on the design, such as a satin pattern or a diamond pattern. Furthermore, the magnetic hook 1 is not limited to the round shape of the embodiment, but can be applied to the cover 6 of a rectangular magnetic hook (only the female hook 2 is shown in the figure) as shown in FIG. The engraved pattern 13 may be provided, or the first
1 and 12, an annular convex portion 19 is formed on the outer edge of the cover 6 of the female stop portion 2 to form a recessed portion into which the disc 14 of the male stop portion 3 is fitted, and the recessed portion is An engraved pattern 13 is provided on the bottom (Fig. 12)
It is possible to implement a magnetic latching tool in those cases as long as it is composed of one stop part containing a permanent magnet and the other stop part that is removably attracted to the stop part.

(Effects of the invention) As stated above, according to this invention, the surface of the cover is provided with an engraved pattern, making it difficult for scratches to occur, and even if scratches do occur, they are not noticeable, thereby reducing the product value. There is no effect.

Furthermore, since work hardening occurs due to the addition of the engraved pattern, the cover material can be made thinner and the amount of material can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view of the embodiment of this invention, Fig. 2 is a plan view, Fig. 3 is a sectional view taken along line A-A in Fig. 1, and Fig. 4 is a front view of the female stop of the embodiment. , FIG. 5 is a plan view, FIG. 6 is a front view of the male stop of the embodiment, FIG. 7 is a bottom view, FIG. 8 is a partially enlarged view of FIG. 10 is a plan view of the female stop of another embodiment of this invention, FIG. 11 is a sectional view of still another embodiment of this invention, and FIG. 12 is the same. It is a top view of a female stop part. DESCRIPTION OF SYMBOLS 1... Magnetic hook part, 2... Female stop part, 3... Male stop part, 5... Permanent magnet, 6... Cover, 6a... Top plate, 13, 20... Embossed pattern.

Claims (1)

[Claims for Utility Model Registration] 1. A magnetic latching device consisting of a female stop with a built-in permanent magnet and a male stop that is removably attracted to the female stop, in which the outside of the female stop is attached. A magnetic hook characterized by having an engraved pattern on the surface of the metal cover that forms the shell. 2. The magnetic hook according to claim 1 of the utility model registration claim, wherein the engraved pattern is provided on the entire surface or a part of the surface of the metal cover.