JPS6149806B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention discloses an engaging tool structure using a permanent magnet, which is provided as a method for securing an opening/closing part of a door, etc.
Particularly, an engaging tool in which one of the pair of engaging tools can swing in all directions to effectively solve the problem of poor engagement due to installation errors or distortion of the mounting surface due to use. Regarding the provision of

(Prior art) Previously, this type of engagement tool called a catcher uses a permanent magnet, such as those disclosed in Utility Model Application No. 53-7333 and Utility Model Application No. 49-138274. However, these are used when the mounting surface is installed in the opening of a product with relatively little assembly dimensional error, such as a cabinet, and it is not necessary for the engaging tools to be attracted to each other while swinging. It was used.

In particular, some types had yokes attached to both sides of a permanent magnet, but these were installed in such a way that the movement of the engagement tool body was blocked as much as possible by swinging the yoke itself. Ta.

(Problem to be solved by the invention) However, in the actual production of cabinets, etc., dimensional errors are inevitable during production and assembly, and the engagement tools are not in close contact with each other. There were many disadvantages, such as the need for time and effort to correct the mounting position in order to achieve the same condition.

It has been thought that some errors in the installation level between the engaging tools can be corrected by making the attached yoke swingable, but the direction of movement of the yoke is always constant. However, it was particularly difficult to correct the gap due to the mutual rocking of the engaging members in all directions.

(Specific Means for Solving the Problems) The engaging tool according to the present invention has been specially devised in view of the inconveniences in the conventional catcher, and is one of the engaging tools having a permanent magnet. The device is designed to be able to swing in all directions with respect to the installation level, effectively compensating for deviations in the engagement positions between the engagement tools that occur during installation, manufacturing, assembly, and use, and is suitable for use on doors, etc. An engaging tool for use as a means for securing the opening/closing part is inserted from a ferromagnetic plate 2 attached to the magnetic pole surface b of a permanent magnet 1 having a hole 1a toward the other magnetic pole surface b from one magnetic pole surface a to the other magnetic pole surface b. A ferromagnetic rod 8 erected in 1a and a ferromagnetic plate 3 attracted to the magnetic pole surface a
Alternatively, in an engagement tool in which a ferromagnetic rod 3a protruding from the ferromagnetic plate 3 is removably attracted within the hole 1a, the ferromagnetic rod 8 is sequentially connected to a large diameter rod portion 8a and a small diameter rod portion. 8b and an extremely small diameter rod part 8c, the small diameter rod part 8b is inserted into the hole 2a provided in the ferromagnetic plate 2 in the hole 1a with some play, and the extremely small diameter rod part 8c is inserted into the hole 2a provided in the ferromagnetic plate 2 in the hole 1a. The ultra-thin diameter rod part 8c, which is inserted into a hole 5a provided in the letter-shaped mounting plate 5 and protrudes from the hole 5a, is caulked 8c' to the surface of the mounting plate 5, and the ferromagnetic plate 2 is attached to the mounting plate 5. A gap x is formed between the plate 5 and the plate 5.

(Embodiment) A typical embodiment of the engaging tool according to the present invention will be described below with reference to the attached drawings. A ferromagnetic plate 2 with a ferromagnetic rod 8 erected on the magnetic pole surface a is attached, and this is integrally held and fixed with a case 4 made of a non-magnetic material. The permanent magnet 1 has a hole 1 extending from one magnetic pole surface a to the other magnetic pole surface b.
Generally, bar steel magnets, sintered magnets such as ferrite, plastic magnets, or rare earth magnets are selectively used when a particularly strong attraction force is required.

The case 4 has a hole in the bottom surface of the case which is in the shape of an inverted dish and has a flange 4a that communicates with the hole 1a and engages with the edge of the hole 1a, and has a bent claw 4b on the opening edge of the case 4. It has a structure that integrally has the following.

Next, the ferromagnetic rod 8 is sequentially composed of a large diameter rod part 8a, a small diameter rod part 8b, and an extremely small diameter rod part 8c, and the ferromagnetic rod 8 is inserted into the hole 2a of the ferromagnetic plate 2 from the hole 1a side. The small diameter rod part 8b of the ferromagnetic plate 2 is loosely fitted first, and the ferromagnetic rod 8 is erected in the hole 1a, and the hole 2a of the ferromagnetic plate 2 is
The small diameter rod portion 8b loosely fitted into the hole 5a of the mounting plate 5 is further made smaller in diameter via the swing gap x.
The ferromagnetic rod 8 is attached by inserting the rod into the ferromagnetic rod 8 and caulking the end of the insertion rod 8c'.

The mounting plate 5 is generally intended to be fixed to an opening of a cabinet, etc., so it is formed into an approximately L-shaped angle, and one bent end is attached to the cabinet surface with screws.
It is fastened with wooden screws, nails, or other appropriate means.

In addition, the ferromagnetic rod 8 has a small diameter rod portion 8b as an extremely thin rod portion 8c.
By making the narrow diameter rod portion 8b larger than the thickness of the ferromagnetic plate 2, a mounting gap x for swinging is provided between the engagement tool and the mounting plate 5. .

One of the engaging tools, which is a female tool, and the male tool, which is the other engaging tool, are made up of a ferromagnetic plate 3 and a ferromagnetic rod 3a, and are assembled using an appropriate method such as gluing or caulking. It is attached to the cabinet door by rivets, nails, screws, etc. The 6th
B in the figure is a male tool corresponding to the embodiment shown in FIG. 5, in which an engaging edge flange 3b is provided around the peripheral edge of the plate 3 in place of the rod 3a.

Further, in the embodiment shown in FIG. 2, a ferromagnetic plate 7 for shielding is attached to the magnetic pole face a of the permanent magnet 1 in order to prevent harmful effects caused by lines of magnetic force in the magnet used, especially damage to the recording portion of the magnetic tape, etc. In the embodiment shown in FIG. 3, the case 4 is omitted from the case described above, and the permanent magnet 1 is directly attached to the ferromagnetic plate 2, and a plastic magnet or the like is used.

Further, in the embodiment shown in FIG. 4, a ferromagnetic plate 7 is attached to the surface of the permanent magnet 1 in order to protect the surface of the permanent magnet 1 and at the same time produce a magnetic shielding effect.
Furthermore, the embodiment shown in FIG. 5 shows an embodiment in which the ferromagnetic rod 3a is omitted and a ferromagnetic rod 8 is provided up to the opening surface of the hole 1a instead.

Various methods are used to attach the male tool, including fixing the ferromagnetic rod 3a to the ferromagnetic plate 3 by welding, soldering, caulking, gluing, or other methods, and also attaching the ferromagnetic rod 3a to the ferromagnetic plate 3 itself. It is also fixed to the mounting base plate surface using a suitable method such as gluing, riveting, bending, nailing, screwing, etc.

(Effects) The engaging tool according to the present invention is constructed as described above, and in particular, the ferromagnetic rod 8 of the female tool, which is one of the paired engaging tools, is sequentially connected to the large diameter rod portion 8a and the small diameter rod portion 8b. and an extremely small diameter rod part 8c, the small diameter rod part 8b is inserted into the hole 2a provided in the ferromagnetic plate 2 in the hole 1a with some play, and the extremely small diameter rod part 8c is formed into an L-shape. The hole 5a is inserted into the hole 5a provided in the shaped mounting plate 5.
The ultra-thin diameter rod portion 8c that is further protruded is caulked 8c' to the surface of the mounting plate 5, and the ferromagnetic plate 2
Since a gap x is formed between the mounting plate 5 and the mounting plate 5, the female fitting can swing and tilt in all directions with respect to the mounting surface, making it easy to manufacture, assemble, and use the cabinet, etc. Even if there is a misalignment in the relative position of the male and female tools, this can be appropriately corrected and they can be effectively engaged.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a typical embodiment of the engaging tool according to the present invention, FIGS. 2 to 5 are sectional views of various embodiments of the female tool, and FIG. 6 is a sectional view of the male tool. FIG. In the figure, 1... permanent magnet, 2, 3... ferromagnetic plate,
4...Case, 5...Mounting plate, 6...Washer, 7...
...Ferromagnetic plate, 8...Ferromagnetic rod.

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 is erected in the hole 1a. In the engagement tool in which the ferromagnetic rod 8 and the ferromagnetic plate 3 attracted to the magnetic pole surface a or the ferromagnetic rod 3a protruding from the ferromagnetic plate 3 are removably attracted in the hole 1a, The ferromagnetic rod 8 is composed of a large diameter rod part 8a, a small diameter rod part 8b, and an extremely small diameter rod part 8c in order, and the narrow diameter rod part 8b is formed in the hole 2 provided in the ferromagnetic plate 2 in the hole 1a.
a with some play, and the ultra-thin diameter rod part 8c is inserted into the hole 5a provided in the L-shaped mounting plate 5, and the ultra-thin diameter rod part 8 protrudes from the hole 5a.
c is caulked 8c' to the surface of the mounting plate 5 to form a gap x between the ferromagnetic plate 2 and the mounting plate 5.