JPH0158848B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the disclosure of an engaging tool that is equipped with a permanent magnet and has a simple and reliable magnetic attraction force.

One of the anticipated main objects of the present invention is that the male tool of the engaging tool can be attached only by clamping the edge of the object to be engaged, especially by using a clamping structure by bending. , it effectively reduces not only the production cost but also the installation cost, and eliminates the use of intervening materials at all.
The aim is to reduce the cost of such parts and make it possible to provide a product at a low price.

Next, one of the other main objects anticipated in the present invention is to expose the male edge to the edge of the object by bending the ferromagnetic plate itself that becomes the male tool, and to By omitting any structure for fastening, the mounting part is relatively clean, and it can be attached to the edge of a thin object without damaging the appearance of the object. This is to enable accurate attachment.

Furthermore, one of the other main objects anticipated in the present invention is to increase the strength of the part by bending the ferromagnetic plate that serves as the male tool and attaching it around the edge of the object. This was done so that it could be produced effectively.

Next, one of the other main objects anticipated in the present invention is that the permanent magnet fitted through the cover is regulated by the hanging edge flange in the hole opened in the cover, and the movement of the magnet causes the permanent magnet to be inserted into the hole. prevent blockage of
This is intended to ensure reliable engagement.

Furthermore, the various other objects anticipated in the present invention will be made clear in turn from the following description, and the present invention will take advantage of the appropriate and purposeful effects of these characteristics. In order to achieve this, the gist of its configuration is that a ferromagnetic plate 2 with a wider width than the permanent magnet 1 is attached to one end face of a cubic or rectangular permanent magnet 1, and is made of a non-magnetic material in the shape of an inverted dish. A cover 3 is fitted onto the magnet 1 from above to integrally hold the magnet 1 and the plate 2 so as to provide a gap 3a between the magnet 1 and the inner peripheral wall surface of the cover 3. An engaging female fitting b that positions the storage magnet 1 by bringing the hanging collar 3c in the hole 3b formed in the cover 3 on the surface into contact with the side wall surface of the storage magnet 1, and the permanent magnet 1.
One side edge of another ferromagnetic plate 6, which is removably magnetized to the other end surface of the plate, is bent and fixed in a direction opposite to the magnetized end surface via the edge of the object to be attached, and the object to be attached is bent. A part of the ferromagnetic plate 6 fixed to the end edge facing the inside of the object to be attached is punched out to form a protrusion in the direction of the outer surface of the attached object to form an engaging piece 6c, and the piece 6c is inserted through the hole 3b. The tip of the male engaging tool a is placed in contact with and magnetically attached to the two surfaces of the plate, and considerable design changes are planned in conjunction with this configuration. .

The details of the present invention will be described below with reference to a typical embodiment shown in the drawings, where a indicates a male engagement tool, b indicates a female engagement tool, and this female engagement tool b is a cubic or rectangular magnet. A ferromagnetic plate 2 having a wider width than the magnet 1 is magnetically attached to one end face of the magnetic pole 1, and the ferromagnetic plate 2 is attached to the end face of the magnet 1.
The magnet 1 is fixedly attached by holding a cover 3 having a diameter 3a, and an engagement hole 3b is bored above the gap 3a of the cover 3, and at the same time, the position of the magnet 1 is regulated by a hanging edge flange 3c. . A mounting piece 5 is interposed and fixed to the base structure of the female tool b as appropriate and necessary, and a part of the plate 2 is recessed in the direction opposite to the magnetic field, and slits are formed on both sides of the recess. A hole is opened and a mounting piece 5 is fitted into the slit and fixed thereto.

The male tool a, which is intended to be detachably magnetically attached to the female tool b, is made of a single ferromagnetic plate 6, with one side edge bent 6a in the direction opposite to the magnetic surface to be used. , is adapted to be fixed to this part via an object c to be fastened, and a locking piece 6b is punched out from the end face facing inside of the object c to the fastening point.
is provided protrudingly, and this locking piece 6b is appropriately attached to the object c.
It was designed so that it would be absorbed into the body.

Therefore, a part of the plate 6 is punched out so as to be mounted on the plate 6 at a position facing the inside of the object c to be attached and protrude outward, and this is formed into a punched engagement protrusion 6 that protrudes outward. It is. The present invention has the characteristic structure described above, in particular, the central plate 6 is made of a single ferromagnetic plate, and this single plate 6 constitutes the male tool a, thereby realizing the various characteristics described above. This is expected to have a positive effect.

Therefore, in the conventional male tool of this type, a special attachment structure for the object to be attached (c) is separately provided, and members for such attachment and assembly time are separately required. This results in the thickness of the parts and the complexity of the appearance, which significantly reduces the commercial value of the product and at the same time increases the cost of the product. The present invention avoids the disadvantages of the conventional products, and has the desired fastening strength.
Moreover, the present invention relates to the disclosure of an extremely novel and effective engagement tool that can simultaneously protect the edge of the object to be engaged (c).

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a typical embodiment of the present invention, and FIG. 2 is a sectional view thereof. In the figure, 1... magnet, 2... ferromagnetic plate,
3...Cover, 4...Ferromagnetic rod, 5...Mounting piece,
6...This shows a ferromagnetic plate.

Claims (1)

[Claims] 1. A ferromagnetic plate 2 wider than the permanent magnet 1 is attached to one end face of a cubic or rectangular permanent magnet 1, and a cover 3 made of a non-magnetic material in the shape of an inverted dish is placed on the face of the magnet 1. The magnet 1 and the plate 2 are integrally held so that a gap 3a is formed between the magnet 1 and the inner circumferential wall surface of the cover 3.
An engaging female fitting b that positions the storage magnet 1 by bringing the hanging collar 3c in the hole 3b formed in the cover 3 on the side A into contact with the side wall surface of the storage magnet 1; and the permanent magnet 1. One side edge of another ferromagnetic plate 6, which is removably magnetized to the other end surface of the plate, is bent and fixed in a direction opposite to the magnetized end surface via the edge of the object to be attached, and the object to be attached is bent. A part of the ferromagnetic plate 6 fixed to the end edge facing the inside of the object to be attached is punched out to form a protrusion in the direction of the outer surface of the attached object to form an engaging piece 6c, and the piece 6c is inserted through the hole 3b. An engaging tool comprising a male engaging tool a whose tip end is brought into contact with and magnetically attached to the second surface of the plate.