JPS59193005A - Engaging female fitting - Google Patents

Abstract

PURPOSE:To check the generation of magnetic trouble at engaging fittings by a method wherein a cylindrical non-magnetic case having a base and provided with a hole to communicate with the hole of a permanent magnet and an edge flange protruded to the outside periphery is fitted on the outside peripheral face of the magnet, and the protruded edge flange mentioned above is positioned on the peripheral edge of the magnetic pole face to come in contact with the ferromagnetic metal plate of a male fitting. CONSTITUTION:A permanent magnet 1 is opened with an engaging hole 1a, ferromagnetic metal plates 2, 7 are affixed to the magnetic pole faces, the metal plates 2, 7 and the magnet 1 are fitted in a cylindrical nonmagnetic case 6 having a base, and the whole is unified in one body by a fastening piece 6c. The case 6 is opened with a hole 6b at the base to communicate with the magnet hole 1a, and a thick engaging edge flange 6a is constructed along the outside peripheral edge of the magnetic pole face of the metal plate 7. A ferromagnetic rod 4 to reach the opening top edge of the magnet hole 1a is disposed in upright in the inside wall of the hole 1a interposing a magnetic gap between them, a finely diametrical rod part 4a is inserted to be caulked into a fixing washer 8 having leg pieces 8a through the metal plate 2. A male set fitting is constructed of a fixing metal fitting having a ferromagnetic metal plate 3 and leg pieces 9a, and the peripheral edge is engaged with the edge flange 6a to check lateral shifting. Accordingly, generation of magnetic trouble to a magnetic tape, etc. can be suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention discloses an engaging tool using a permanent magnet, particularly a female engaging structure that minimizes the possibility of magnetic interference and further improves the engagement of the male tool. This is related to.

Therefore, in the conventional engaging tools using permanent magnets of this type, the main aim was to effectively draw out the adsorption force, and there was a risk of accidents caused by generated magnetism, especially magnetic tape, magnetism, etc. Little attention has been paid to the destruction of magnetic recording parts such as cards or magnetic tickets. Some attempts have been made to prevent such magnetic destruction by interposing a magnetic shield plate on the magnetic pole surface; however, when tapes, cards, etc. come into direct contact with this magnetic shield plate, The shield effect was considered completely meaningless.

The present invention has been specially devised in view of the inconveniences of the conventional fasteners, and it reliably prevents the magnetic tape, magnetic card, or magnetic cap from coming into direct contact with the magnetic pole surface, and also prevents the insertion and removal of the male fastener. A part of the non-magnetic case (6) is used as it is to form the engaging edge flange (6)a as a guide and as an edge flange to prevent the male stop from slipping sideways.

That is, in the present invention, as a means to eliminate the inconvenience of magnetic leakage in the conventional stop, by simply providing a rim (6) a on a part of the stop case (8), The present invention has achieved its intended effect, and the gist of its configuration is set forth in the claims, and the following specific examples and considerable design changes are planned.

Hereinafter, a typical embodiment of the female fastener according to the present invention shown in the drawings will be described in detail. This magnet (1) is equipped with a ferromagnetic plate (2) on one pole face and a ferromagnetic plate (7) on the other pole face. ), (7) and the magnet (1) are fitted into a non-magnetic case (6) having a cylindrical shape with a bottom, and the locking piece (6) C provided at the opening edge of the case (6) is inserted. It is a unified whole.

In addition, the case (6) has a hole (6) that communicates with the magnet hole (1) a.
b is opened at the bottom, and a thick engaging edge flange (6) a is constructed along the outer periphery of the magnetic pole surface of the plate (7).

The visible structure of the edge flange (6)a has no problem with dimensional unevenness due to bending of the case (6), and the edge flange (6)a stands clearly as the engagement edge of the male stop. is composed of

The ferromagnetic rod (4) reaching the upper edge of the opening of the magnet hole (1)a having such a structure is erected on the inner wall of the hole (1)a with a considerable magnetic gap therebetween, and the ferromagnetic rod (4) The small-diameter scale portion (4) a of the rod (4) is inserted through the plate (2) into a mounting washer (8) having a bent leg piece (8) a, and crimped.

The male stopper engaged with the female stopper having the structure shown in the figure is the 13th male stopper.
The ferromagnetic plate (3) and the bent leg piece (8) illustrated in the figure
)a with a mounting washer (9), and the peripheral edge of the plate (3) is engaged with the edge flange (8)a to prevent lateral displacement as a stop. be.

In the structure of the female stopper according to the present invention, when the male stopper is removed, the magnetic path of the magnetic pole surface is focused on the plates (2) and (7), and the magnetic path of the plate (2) is focused on the plates (2) and (7). The lines of magnetic force use the rod (4) as a passage, and the passage between the upper edge of the rod (4) and the inner opening edge of the plate (7). Therefore, no lines of magnetic force protrude outward from the magnetic pole surface, and even when a magnetic tape or the like is brought close to the magnetic pole surface, there is no fear of magnetic interference. In particular, in the above structure, since the non-magnetic case (6) is interposed on the ferromagnetic plate (7) surface, there is no magnetic interference even when a magnetic tape etc. comes into direct contact with this female stopper. There is no need to worry about this.

Furthermore, due to the interposition of the retaining edge flange (8) a raised along the outer periphery of the magnetic pole of the female stopper, the interference that is expected to occur between the magnetic poles via the outer surface of the magnet (1) is This also prevents magnetic tape from coming into contact with leakage magnetism, and almost complete magnetic shielding is guaranteed even when the male stopper is removed.

In the embodiment shown in FIG. 2, the length of the rod (4) in the female stopper is set to reach the middle of the hole (1) a, and the corresponding male stopper is the length dimension that reaches the middle of the hole (1) a. As shown in Figure 14, and as shown in Figure 3.
In the embodiment shown in the figure, the rod (4) is completely omitted, and the male stopper rod (
The stopper shown in Fig. 15 where 5) reaches the plate (2) surface is planned to correspond to this.

Next, the embodiments shown in FIGS. 4 to 6 are examples in which the ferromagnetic plate (7) is omitted from the stopper shown in FIGS. 1 to 3, and the magnetic shield is used. Entsuba (6)
) Particular emphasis was placed on the role of a. That is, due to the presence of the edge flange (6) a, magnetic tapes, LA cards, etc. are in a cross-linked state on the magnetic pole surface, and are almost prevented from coming into direct contact with the magnetic pole surface, and magnetic interference caused by magnetic lines of force is suppressed as much as possible. be.

Next, the embodiments from Fig. 7 to Fig. i9 show other mounting examples regarding female fasteners.

Figure 7 shows an example in which a funnel-shaped mounting member (10) is attached to a magnet (1) together with a plate (2) through a case (6), and Figure 8 shows a funnel-shaped mounting member (11) with a bottom. Similarly, a magnet (1
), and the mounting member (not shown) that is press-fitted through the board is the mounting member (11) in FIG. 8 for the stopper in FIG. 7, and the mounting member (11) in FIG. In the fasteners shown in FIG. 7, the mounting members (lO) shown in FIG. 7 are used. In addition, in the embodiment shown in FIG. 9, the small diameter rod part (4) a of the rod (4) is made into a pin shape, and the piercing crack is made to stick to the washer (12) having eyes through the substrate and fix it. In the example shown in Fig. 10, the small diameter rod part (4)a of the rod (4) is a screw rod, and the washer (13) and nut (14) are used to fix it to the board. This is what I did.

Further, the embodiment shown in FIG. 11 is used as a snap for shoe bands and other types of shoes, and the ferromagnetic plate (2) is laterally extended to connect the engagement hole of the band to the chain. It is set up in the department.

In addition, in the embodiment shown in FIG. 12, a tapered or rounded surface that slopes toward the hole (1) a is provided on the suction surface of the male stop to improve the fitability of the rod (5) and to improve the fit of the rod (5). Particularly good plating on sloped surfaces.

Next, the examples shown in FIGS. 13 to 17 are various male fasteners, and the example in FIG. 16 corresponds to the embodiment in FIG. 11, and the example in FIG. An example of this is the embodiment shown in Fig. 11, in which a rod (
4) is particularly meaningful as it corresponds to a female stopper that is erected.

Furthermore, FIG. 18 shows a male stopper with a design change so that it can engage with the edge flange (6)a of the female stopper.

The present invention relates to the provision of a female stop that has the above-mentioned simple structure and reliably prevents magnetic disturbances and lateral displacement of the male stop, and also serves to reinforce the case itself.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the female stopper according to the present invention;
Figures 2 to 12 are cross-sectional views showing other embodiments;
3 to 17 are cross-sectional views showing an embodiment of the male stopper, and FIG. 18 is a cross-sectional view showing a female fixture and a male fixture of another embodiment. In the figure, (1)...permanent magnet, (2)-(3)...
Ferromagnetic plate, (4)-(5)...Ferromagnetic rod, (6)...
・Case, (7)...Ferromagnetic plate, (8)-(8)...
・Mounting washer, (10) to (11)...Mounting member, (1
2) to (13)... washers, (14)... nuts. Patent Applicant Co., Ltd. Tamo Representative Patent Attorney Minoru Kuwahara Figure 3 Figure 5 Figure 2 Figure 2 a Figure 4 Figure 6 Figure 7 Figure q Figure 2 // Figure 8 Figure 10 figure! 4 Figure 12/3 Figure qa Figure 15 a Figure 17 Figure 14 Figure 16 Figure 18

Claims (1)

[Claims] Engagement hole (1) a from one magnetic pole surface to the other magnetic pole surface
A ferromagnetic plate (2) is attached to one of the magnetic pole faces of a permanent magnet (1), and the ferromagnetic plate (3) is attached to the other magnetic pole face so as to be freely abuttable to the other magnetic pole face. the magnetic plate (2) through the magnet hole (1)a,
(3) In the engagement tool, the permanent magnet (1) is brought into contact with the ferromagnetic rods (4) and (5) in a removably adsorbable manner by protruding from either or both of the rods (4) and (5). a bottomed cylindrical non-magnetic case having a hole (6) a at the bottom which communicates with the hole (1) a in the magnet (1) on the outer circumferential surface of the case, and a protruding edge flange at the outer periphery of the bottom; (6) was fitted over the ferromagnetic plate (3), and the protruding edge flange of the case (8) was positioned on the periphery of the magnetic pole surface in contact with the ferromagnetic plate (3), thereby forming the engaging edge flange (6) a. An engaged female characterized by
Ingredients.