JPS6046805B2 - Mounting structure of engagement tool - Google Patents

Description

[Detailed Description of the Invention] (Field of Application of the Invention) The present invention provides an engagement tool that allows an object to be attached, such as an engagement tool, to be fastened to a substrate surface quickly and reliably by a simple installation operation. This relates to the disclosure of the mounting structure of.

(Prior Art) Various types of attachment means for this type of engagement tool have been seen in the past, and many attempts have been made to improve them.

However, each of them had advantages and disadvantages, and they were not necessarily satisfactory. In particular, the reduction in the number of parts to be installed and the reduction in work effort tend to be at odds with installation accuracy and installation strength.
(Problems to be Solved by the Invention) The present invention reconciles the contradictory disadvantages of the conventional mounting means, maintains mounting accuracy and desired mounting strength, and reduces the number of parts. It is also intended to effectively reduce the amount of work required.

(Means for Solving the Problem) According to the present invention, the mounting female fitting is made into a cylindrical body having a bottomed hole having a bulging hole communicating with the outside, and the mounting The male tool is made into a simple cylinder with a bottom, and the high contact friction due to pressure-tight fitting unique to such a cylinder and the excellent strength characteristics unique to the cylinder are derived, and the number of parts is kept to the necessary minimum, In addition, the installation process is a simple fitting and crimping process, and is expected to produce various effects not found in previous installation methods. A ferromagnetic member 2 which is attracted and fixed to one magnetic pole surface a of a permanent magnet 1 having a hole 1a, and a ferromagnetic member 3 which is attached to the other magnetic pole surface by attraction are detachably attached through the hole 1a. In the mounting structure of the engaging tool to be attracted, a female mounting tool, which is made of a cylinder and has a plurality of holes on its circumferential side, is provided protrudingly on the back side of the attracting surface of the ferromagnetic member 2 or 3; Insert the female mounting tool from one side of the mounting hole of the mounting board c, and insert the male mounting tool, which is a separately prepared bottomed cylinder and has a flange connected to the periphery of its opening, into the mounting hole. The fitting structure is such that the fitting is press-fitted into the cylindrical body of the female fitting from the other side, and the cylindrical wall of the male fitting is bulged into the hole on the circumferential side of the female fitting. .

(Example) Hereinafter, a typical example will be described in which the details of the mounting structure according to the present invention are shown in the drawings. Fig. 1 shows a pair of engagement tools A and B using permanent magnets. In the engaging tool A, the permanent magnet 1 is made of a sintered magnet such as a ferrite magnet, a steel bar magnet, a plastic magnet, or a rare earth magnet when special attraction force is required, and is disk-shaped and has one magnetic pole surface. A non-metallic material made of brass or the like has a hole 1a extending from a to the other magnetic pole surface b, a ferromagnetic member 2 is attached to one magnetic pole surface a by adsorption, and a hole communicating with the hole 1a of the permanent magnet 1. The ferromagnetic member 2 is enclosed in a magnetic flat bottomed cylindrical metal case 4, and is composed of a ferromagnetic plate 2'' and a ferromagnetic rod 2'', and the ferromagnetic plate 2''
A ferromagnetic rod 2'' whose length reaches the middle of the hole 1a where the mounting hole is formed is inserted into the hole 1a position of the permanent magnet 1 in , and the engaging tool B is a ferromagnetic plate. 3 to ferromagnetic plate 3″
The ferromagnetic rod 3'' has a length reaching the middle of the hole 1a and is inserted into the mounting hole of the ferromagnetic plate 3''.

Engagement tool A (5B is a ferromagnetic rod, 3" is a ferromagnetic rod, and the ferromagnetic plate 3" of engagement tool B is attracted to the magnetic pole surface b of the permanent magnet 1 of engagement tool A via the case 4. A cylindrical body 2''a integrally connected to the ferromagnetic rod 2'' protrudes from the back side of the attraction surface of the ferromagnetic plate 2'' of the engaging tool A. In addition, a plurality of holes 2''b are formed on the circumferential side to form a female mounting tool, and the female mounting tool is inserted through one of the mounting holes in the mounting board c of the bag, etc., and is prepared separately. The male mounting tool 5, which is a cylindrical body 5a with a closed bottom and has a flange 5b connected to its opening periphery, inserts the cylindrical body 5a from the other side of the mounting hole into the cylindrical body 2''a of the female mounting tool. By press-fitting the cylinder 5a into the hole 2'' of the cylinder 2''a, the wall of the cylinder 5a is pressed into the hole 2'' of the cylinder 2''a.
The male and female fittings are integrated into one body, and the mounting board c is fixed by the case of the engagement tool A and the collar portion 5b of the male fitting 5. 4. The ferromagnetic rod 2'' and the ferromagnetic plate 2'', which are connected integrally with the female mounting tool, can be fixed together by inserting a cylinder between the ferromagnetic rod 2'' and the cylinder 2''a. A fitting part 2''c for the ferromagnetic plate 2'' is provided whose diameter is larger than the outer diameter of the ferromagnetic plate 2''a, the length of which is slightly larger than the thickness of the ferromagnetic plate 2'', and the inserted ferromagnetic plate 2'' is inserted. It is attached by caulking the end surface of the insertion part 2''c.The same applies to the attachment structure of the engagement tool B.

That is, in the male and female fittings according to the present invention, the female barrel body 2''
A, the ferromagnetic plate 2'' and the male mounting tool 5 are all that is required for installation, and the number of parts is kept to the minimum necessary.
Also, the installation dimensional accuracy is improved by changing the fitting pressure,
In particular, it is possible to correct the accuracy of parts by adjusting the fitting pressure. In addition, it has been proven that the strength of vibrators is generally superior to that of solid vibrators, and such strength characteristics are further enhanced by overlapping the cylindrical body 2''a and the cylindrical body 5a. Furthermore, the adhesion to the inner wall surface of the cylinder 2''a due to the expansion of the cylinder 5a is ensured by the elasticity of the cylinder 2''a and the elasticity of the cylinder 5a. Ru.
Furthermore, due to the expansion and bite of the wall of the cylindrical body 5a into the hole 2''b, the integrity of both fixtures is greater than that of a normal fixture, and once they are engaged, it is completely impossible to remove them. It is also possible to omit the flange 5b of the male mounting tool 5 and interpose a separate washer to swage the opening edge of the male mounting tool 5 onto the c surface of the mounting board. This is something that cannot be seen.

Further, a button or other decoration may be interposed between the mounting board C and these components by using the flange 5b of the male mounting tool 5 or by using a washer.

Incidentally, in the case of attaching such other parts, the inner hole of the cylindrical body 5a of the male attaching tool 5 itself may be utilized. In contrast to the basic configuration example shown in FIG. 4 and FIG. In particular, a ferromagnetic rod 2'' having a bottomed cylinder 2''a with a hole 2''b formed on the circumferential surface of the bottom and a narrow rod portion 2''d is prepared, and a ferromagnetic plate 2'' is interposed therebetween. The female mounting tool is constructed by caulking the small diameter rod portion 2''d of the ferromagnetic rod 2'' on the inner bottom surface of the cylinder 2''a. In the above description, the male mounting tool 5 for the female mounting tool constructed in this way is constructed using a bottomed cylinder 5a and a flange 5b extending laterally from the opening edge of the cylinder 5a. It is press-fitted into the cylinder 2''a of the fitting, and the expanded flesh of the cylinder 5a of the male mounting fitting 5 is swelled into the hole 2''b of the cylinder 2''a and is bitten. There is.

Note that this male mounting tool 5 has a flange portion 5a as before.
Alternatively, the ferromagnetic plate 2'' may be inserted and the opening edge may be caulked onto the surface of the ferromagnetic plate 2''.

2 and 3, and further examples of applications of the first embodiment shown in FIG. 1 are shown in FIGS. The ferromagnetic rod 2'' is used as an engaging rod with a magnetic path, and the ferromagnetic plate 2'' is a magnetic plate that also serves as a magnetic path on the magnetic pole surface. This is disclosed as a joint tool A.

In the embodiment shown in FIG. 6, the length of the ferromagnetic rod 2'' reaches the opening edge of the hole 1a of the permanent magnet, and in the embodiments shown in FIGS. A magnetic shielding plate 7 is fixed on one magnetic pole face b of the permanent magnet 1. In FIG. 8, this magnetic shielding plate 7 is used as a substitute for a part of the case 4, and In the embodiment shown in Fig. 9, the peripheral edge of the case 4 is formed into a rising edge 4a to enhance the magnetic shielding effect, and a gap 8 necessary to prevent a magnetic short circuit is provided between the case 4 and the permanent magnet 1. 10 shows another example of the rising edge Aa of the fitting A shown in FIG. The rounded or tapered surface is inclined toward the hole 1a to make the engagement of the ferromagnetic rod smoother and to improve the plating on the magnetically attracted surface.

Furthermore, in the embodiment shown in FIG. 12, the ferromagnetic member 2 is laterally extended to serve as an attachment end 2a for a band or the like, and serves as an engagement means for a shoe band, necklace, or the like. The attachments mentioned above are related to engagement devices that use permanent magnets, but it is also possible to attach other general buttons and other decorative devices, and in any of them, the intended This is made possible by the effective adhesion effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a typical engagement tool A of the present invention.
2 is an exploded perspective view of parts of the fixture, Figure 3 is a sectional view of the same, Figure 4 is an exploded perspective view of parts of another embodiment, and Figure 5 is a cross-section of the same. 1 to 12 are sectional views showing other embodiments.

In the figure, 1...Permanent magnet, 2...Washer, 3...Ferromagnetic member, 2'', 3''...Ferromagnetic plate, 2'', 3″...Ferromagnetic rod, 5,6...
...Male mounting tool, 7...Magnetic shield plate, 8.
·····gap.

Claims (1)

[Claims] 1 Hole 1a from one magnetic pole surface a to the other magnetic pole surface b
A ferromagnetic member 2 is attracted and fixed to one magnetic pole surface a of a permanent magnet 1, and a ferromagnetic member 3 is attracted and attached to the other magnetic pole surface b, and the ferromagnetic member 3 is removably attracted to the permanent magnet 1 through a hole 1a. In the mounting structure of the engagement tool, a female mounting tool made of a cylindrical body and having a plurality of holes in its circumferential surface is protruded from the back side of the attraction surface of the ferromagnetic member 2 or 3, and Insert the female mounting tool from one side of the mounting hole, and insert the male mounting tool, which is a separately prepared bottomed cylinder and has a flange connected to the periphery of its opening, from the other side of the mounting hole. . A mounting structure for an engagement tool, characterized in that the female fitting is press-fitted into a cylindrical body of the female fitting, and the cylindrical wall of the female fitting is bulged into the hole on the circumferential side of the female fitting.