JPS6149808B2 - - 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) By the way, conventional engaging devices of this type called catchers utilize permanent magnets, such as those disclosed in Utility Model Application No. 53-7333 and Utility Model Application No. 49-138274. However, it is 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. was.

In addition, there was also a type in which a yoke was attached to both sides of the permanent magnet, but this was installed in such a way that the movement of the engagement tool itself was blocked as much as possible by making the yoke itself swing. 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 was possible to partially correct the error in the installation level between the engagement tools by making the attached yoke swingable, but the direction of movement of the yoke was always in a fixed direction. However, it was particularly difficult to correct the gap due to the mutual rocking of the engaging tools 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. This device is designed to effectively correct deviations in engagement positions between engagement tools that occur during mounting, manufacturing, assembly, and use while being able to swing in all directions with respect to the installation level, and is designed to effectively correct deviations in engagement positions between engagement tools that occur during installation, manufacturing, assembly, and use. An engaging tool for use as an engaging means for the opening/closing part of the
A ferromagnetic rod 8 is erected in the hole 1a from a ferromagnetic plate 2 attached to the magnetic pole surface b of the permanent magnet 1 having a hole 1a facing toward the ferromagnetic plate 3 or A ferromagnetic rod 3 protruding from the ferromagnetic plate 3
In this engagement tool, the ferromagnetic rod 8 is composed of a large diameter rod part 8a and a small diameter rod part 8b, and the small diameter rod part 8b is attached to the hole 1a. It penetrates through the hole 2a provided in the ferromagnetic plate 2 in 1a and the hole 5a provided in the L-shaped mounting plate 5, and
The small diameter rod part 8b protruding from a is crushed to form an enlarged part 8b', and a coil spring is compressed between the mounting plate 5 and the ferromagnetic plate 2.

(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 the stopper is integrally held with a case 4 made of a non-magnetic material. The permanent magnet 1 has a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface b, and is usually made of steel bar magnets, sintered magnets such as ferrite, plastic magnets, or when a particularly strong attraction force is required. Rare earth magnets and the like are selectively used as appropriate.

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, it is composed of a ferromagnetic rod 8, a large diameter rod part 8a, and a small diameter rod part 8b, and the small diameter rod part 8b of the ferromagnetic rod 8 is tightly fitted into the hole 2a of the ferromagnetic plate 2. Rod 8
is erected in the hole 1a, and the hole 2 of the ferromagnetic plate 2 is
The small-diameter rod portion 8b fitted into the hole 8a is swingably inserted into the hole 5a of the mounting plate 5 through the swing gap x, and the end of the inserted rod is crushed to form an enlarged portion 8b'.

A coil spring 7 is compressed between the swing gap x when the engagement member is attached to the mounting plate 5, so that the engagement member can swing in all directions.
The attachment engagement tool swings following the male engagement tool within the range in which the interposed coil spring 7 can be elastically contracted, so that the magnetic state of the ferromagnetic rods 8, 3a is always maintained.

The coil spring 7 is attached so as to revolve around the ferromagnetic rod 8, so that rattling when the interposed coil spring 7 swings is effectively prevented. By winding the spring 7 in such a way that it is attached to the spring 7, stable interposition firing of the spring 7 is possible.

One of the engagement tools, which is a female tool, and the other, which is a male tool, are made up of a ferromagnetic plate 3 and a ferromagnetic rod 3a, and are assembled using an appropriate method such as adhesion, riveting, riveting, etc.
It is attached to the cabinet door part by nailing, screwing, etc., and the ferromagnetic rod 8 of the female fitting is particularly attached to hole 1.
The ferromagnetic rod 3a of the ferromagnetic plate 3 is omitted in the male tool facing the embodiment shown in FIG.

Further, in the embodiment shown in FIGS. 10 to 12, the ferromagnetic rod 3a of the ferromagnetic plate 3 is shaped like a plus screw, a minus screw, or a bolt, making attachment of a male tool particularly convenient.

In contrast to such a basic engagement tool, the embodiment shown in FIG.
The embodiment shown in FIG. 7 has a strong male tool to further ensure this purpose. The periphery of the end surface of the case 4 that the magnetic plate 3 contacts is raised to form a shoulder 4c to avoid direct adhesion of the magnetic tape or the like to the magnetic pole surface a.

In addition, in the embodiment shown in FIG. 8, in order to reduce manufacturing costs, a ferromagnetic plate 6 is laminated on the surface of the permanent magnet 1 by a method such as direct adhesion to protect the permanent magnet 1 and provide magnetic shielding. The embodiment shown in FIG. 9 uses a permanent magnet 1 with excellent impact resistance such as a plastic magnet, and a case 4.
Alternatively, an example is shown in which the ferromagnetic plate 6 or the like is not used at all.

The angle 5 is generally L-shaped, and there is no particular shape or mounting surface, and an appropriate shape and structure is used to match the cabinet etc. to which it is to be installed. Examples are shown in FIGS. 1 to 3.

(Effects) The engaging tool according to the present invention is configured as described above, and in particular, the female ferromagnetic rod 8, which is one of the paired engaging tools, is divided into a large diameter rod portion 8a and a small diameter rod portion 8b. , and the narrow rod portion 8b is connected to the ferromagnetic plate 2 in the hole 1a.
hole 2a provided in the hole 2a and hole 5 provided in the L-shaped mounting plate 5.
a, and the narrow diameter rod part 8b protruding from the hole 5a is crushed to form an enlarged part 8b', and a coil spring is compressed between the mounting plate 5 and the ferromagnetic plate 2. Since the female fitting can swing and tilt in all directions with respect to the mounting surface, there is no misalignment in the relative position of the male fitting and female fitting due to the manufacture, assembly, and use of the cabinet, etc. Even if there is a problem, it is appropriately corrected and engaged effectively.

[Brief explanation of the drawing]

1 to 3 are perspective views of the engaging tool according to the present invention, FIGS. 4 to 9 are sectional views thereof, and FIGS. 10 to 1.
Figure 2 is a perspective view of the same male tool. 1... Permanent magnet, 2, 3... Ferromagnetic plate, 4...
Case, 5...Mounting plate, 6...Ferromagnetic plate, 7...
Coil spring, 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 has a large diameter rod portion 8a and a small diameter rod portion 8b.
The narrow rod portion 8b is inserted into the hole 2a provided in the ferromagnetic plate 2 in the hole 1a and the hole 5a provided in the L-shaped mounting plate 5, and protrudes from the hole 5a. The narrow diameter rod portion 8b is crushed to form the enlarged portion 8.
b', and a coil spring 7 is compressed between the mounting plate 5 and the ferromagnetic plate 2.