JPH03235304A - Clamp - Google Patents

Abstract

PURPOSE:To prevent the cover of a bag, or the like from loosely opening by providing a clamp piece, which forms a clamp together with a clamp piece having a long/short diameter opening, with a foot which has the clamp piece in the necessary direction. CONSTITUTION:A foot equipped with projecting pieces 5a and the clamp piece 5c in the short diameter direction of openings 4a and 1a is provided on the side opposite to the ferromagnetic projection 3a of the ferromagnetic plate 3 of an attracted piece B, which forms a clamp together with an attracted piece A equipped with a nonmagnetic case 4 and a permanent magnet 1 respectively having a long/short diameter opening 4a and 1a. If one tries to open the cover in the short diameter direction where space is small, the clamp piece 5c is attracted magnetically by the magnet 1, and the opening of the cover is limited. Accordingly, the cover can open only in the direction of the long diameters of the openings 4a and 1a, whereby loose opening is prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention does not disengage even if an attempt is made to disengage it from one direction;
The present invention relates to an engaging tool using a permanent magnet that can be easily removed from a substantially orthogonal direction, and which is particularly suitable for engaging a lid of a bag or the like.

[Prior Art 1] A conventional engagement tool using a permanent magnet includes a permanent magnet 51 having a hole 51a extending from one magnetic pole surface to the other magnetic pole surface with a ferromagnetic root 52 attached to one magnetic pole surface, and a ferromagnetic root 52 attached to the other magnetic pole surface. A ferromagnetic plate 53 is detachably attached to the magnetic pole surface of the ferromagnetic plate 52, and a ferromagnetic protrusion 52a or 53a protruding from either or both of the ferromagnetic plates 52 and 53 is inserted through the hole 51a. There is an engaging tool that is designed to be attracted to the other ferromagnetic 12ii52 or the ferromagnetic plate 53, or the other ferromagnetic protrusion S2a or 53a. A to-be-adsorbed device B consisting of a ferromagnetic plate 53 and a ferromagnetic protrusion 53a is attached to a lid C' which is closed in an overlapping manner on the side of the
A device was used in which a magnet 51, a ferromagnetic plate 52, and a ferromagnetic protrusion 52a were attached to a main body C of a bag or the like, and an adsorbent A that was integrated with a permanent magnet 51, a ferromagnetic plate 52, and a ferromagnetic protrusion 52a was attached to the main body C so that they were attracted and engaged.

[Problems to be Solved by the Invention] The engaging tool configured as described above and attached to a bag, etc. When IC' is opened by holding the lower edge of lid C' and lifting it diagonally upward, a lever-like force is applied to lid C° with the upper part as a fulcrum, and suction tool A and suction target B are Because the suction engagement easily comes off, there is the inconvenience that when carrying such a bag, etc., if the bottom end of the lid C' comes into contact with another object and is lifted, the lid C° may open without you realizing it. there were.

In order to prevent such inconveniences, the present invention aims to provide an engagement tool that does not come off from one side but can be easily removed from a direction substantially perpendicular to this.

[Means for Solving the Problems 1] The present invention has an engaging tool configured as follows for the above purpose.

That is, an adsorption tool A having at least a permanent magnet 1 and a ferromagnetic plate 2 attached to one magnetic pole surface a of the permanent magnet 1;
The attracting device B has at least a ferromagnetic plate 3 and a ferromagnetic protrusion 3a protruding from the ferromagnetic plate 3, and the adsorption device A has an insertion gap S of the ferromagnetic protrusion 3a that is larger than the permanent magnet l.
It is provided between the magnetic pole faces a and b of the attracting tool B.
The ferromagnetic plate 3 is attracted to the attraction surface formed by the other magnetic pole face of the permanent magnet 1, and the ferromagnetic protrusion 3a is inserted into the insertion gap S.
It is an engaging tool that attracts the ferromagnetic plate 2 or the ferromagnetic protrusion 2a protrudingly provided on the ferromagnetic plate 2 through the above-mentioned attracting tool A.
The insertion gap S is such that at least the opening of the insertion gap S has a major axis d on one side and a minor axis d° on the other side, and the attracted tool B is attached to the surface opposite to the ferromagnetic plate 3. Leg member 5
The leg member 5 has a locking piece 5c raised up on the side of the attracted surface through the side end of the ferromagnetic plate 3, at least along the short axis d' direction of the insertion gap S. The configuration is as follows.

The insertion gap S in the suction tool A may be formed by a permanent magnet 1 or a non-magnetic case covering the permanent magnet 1.

[Function] In the engaging tool configured as described above, the suction tool A is installed so that the minor axis d' side of the insertion gap is in the opening/closing direction of the lid C° of a bag, etc., and the suction tool B is attached to the locking piece 3c. If it is attached to the lid C° so that it is on the opening side of the lid C°, when you try to open the lid C°, the lower edge of the lid C° will try to move diagonally upward using the upper part as a fulcrum, so the locking piece 3c is pressed against the side of suction tool A,
In addition, since the ferromagnetic protrusion 3a is tilted and sandwiched within the insertion gap S, the suction tool A and the suction target B are not disengaged from each other.

Moreover, when the ferromagnetic protrusion 3a is tilted in the direction of the major axis d, there is a margin between the ferromagnetic protrusion 3a and the inner surface of the insertion gap S, so that the locking piece 3c is also aligned with the side surface of the suction tool A. , so the engagement can be easily released.

In other words, even if the lower edge of the bag lid C' comes into contact with another object and is lifted, fic' will not open, and it can be opened by consciously opening iic' from the side. I can do it.

[Example] An example of the engagement tool according to the present invention will be described below with reference to the drawings.

1 describes an embodiment of an engaging tool for a permanent magnet with reference to the drawings.

1 is a permanent magnet, and a ferrite magnet, a rare earth magnet, a plastic magnet, a rubber magnet, etc. are used, and a thank-you insertion gap S is provided from one magnetic pole surface to the other magnetic pole surface. The opening has an oval shape with one side having a major axis d and the other side having a minor axis d', and this insertion gap S may be formed of a plurality of permanent magnets.

2 is a disk-shaped ferromagnetic plate with the same diameter as the magnetic pole surface a, which is adsorbed and attached to one magnetic pole surface a of the permanent magnet 1; The provided ferromagnetic protrusion 5 is a leg plate having a pair of legs 5a bent in a U-shape, and a small diameter rod i2a' provided coaxially with the ferromagnetic protrusion 2a is attached to the ferromagnetic plate 2. In the hole drilled approximately in the center,
The ferromagnetic protrusion 2a, the ferromagnetic plate 2, and the leg plate 5 are integrated by inserting the ferromagnetic protrusion 2a, the ferromagnetic plate 2, and the leg plate 5 into one body by inserting the ferromagnetic protrusion 2a, the ferromagnetic plate 2, and the leg plate 5 into one body by inserting the ferromagnetic protrusion 2a, the ferromagnetic plate 2, and the leg plate 5 into a hole at the center of the leg plate 5, which is inserted from one side and attached to the other side. It's stuck.

4 is an inverted dish-shaped non-magnetic case having a hole 4a in the top wall that communicates with the insertion gap S of the permanent magnet 1; The ferromagnetic plate 2 and the leg plate 5 are held together with the permanent magnet l inward, and the plurality of locking claws 4b provided at the lower edge of the non-magnetic case 4 are bent onto the surface of the ferromagnetic plate 2. The suction tool A is configured by being locked by.

The insertion gap S is formed by the permanent magnet 1, and as shown in FIG. 6, a large hole 1a is made in the permanent magnet l.
The hole 4a of the non-magnetic case 4 is within the size of this hole 1a.
It may be formed by

In addition, the insertion gap S may have a rectangular, polygonal, elliptical, etc. shape in addition to the elliptical shape as described above.

3 is a disk-shaped ferromagnetic plate that is attracted to the attraction surface formed by the magnetic pole face of the permanent magnet 1 in the attraction tool A, and has a hole formed approximately in the center. 5 is a pair of legs 5a bent in a U shape
, 5a, and a hole is bored in the center of the part between the legs.

3a is a cylindrical ferromagnetic protrusion, and this ferromagnetic protrusion 3a
A small-diameter rod portion 3a' coaxially provided is inserted into the holes of the ferromagnetic plate 3 and the leg member 5 from the attracted surface side of the ferromagnetic plate 3 and crimped together, and the ferromagnetic plate 3 surface is strongly crimped. The attracted tool B is configured by protruding magnetic protrusions. The ferromagnetic protrusion 3a may have a circular cross section, a rectangular shape, an elliptical shape, or the like.

Further, a ferromagnetic plate 3 is attached to the leg member 5 of the suction target B from the part between the legs.
It has an extending portion 5b along the surface, and a locking piece portion 5c is further provided that extends from the extending portion 5b through the side end of the ferromagnetic plate 3 toward the surface to be attracted.

By inserting the legs 5a and 5a into the mounting surface and bending them, for example, the suction tool A can be attached to the side surface of the body C such as a bag, and the suction target B can be attached to the upper opening of the body C such as a bag. It is attached to the covering iIC with the minor axis d'' in the opening/closing direction of the lid C°, and the suction target B is attached with the locking piece 5C facing downward, that is, the side from which the lid C° starts to open.

As shown in FIG. 7, the attracting tool A and the attracted tool B are provided with ferromagnetic protrusions 2a and 3a, respectively, so that the ferromagnetic plate 3 of the male tool B forms the magnetic pole surface of the permanent magnet 1. A case where the ferromagnetic protrusions 2a and 3a suck each other while sucking the suction surface;
As shown in FIG. 8, the ferromagnetic plate 2 is not provided with any protrusions, and only the ferromagnetic plate 3 is provided with ferromagnetic protrusions 3a, so that the ferromagnetic plate 3 is attracted to the attracting surface and the ferromagnetic protrusions 3a are directly Take a look at the magnetic plate 2.

When the engaging tool configured as described above and attached as described above is opened by lifting the lid C° of the bag as shown by the thin arrow in FIG. At the same time, the locking piece portion 5c presses against the side surface of the suction tool A, and the engagement does not come off.

Then, lift the lid C° as shown by the thick arrow, or
If you open it in the direction of , it will easily disengage.

9 to 12 show various embodiments of the suction target B. In the one shown in FIG. The stopper portions 5c are provided to face each other. In Fig. 1O, a ferromagnetic protrusion 3a and a ferromagnetic plate 3 are integrally formed, and a part of the periphery of a disk having approximately the same diameter as the ferromagnetic plate 3 is attached to a surface to be attracted via the side end of the ferromagnetic plate 3. A locking piece 5c is provided on the side, and a pair of incisions are made from the periphery of the disk by sandwiching the center of the disk, and the portion between the incisions is bent perpendicularly to the disk to form a pair of legs 5a, 5a is welded to the surface of the ferromagnetic plate 3 that does not have the ferromagnetic projections 3a. In FIG. 11, the leg member 5 is a funnel-shaped tube with one end expanded into a brim shape, and a part of its periphery is a locking piece portion 5c raised toward the surface to be attracted via the side line of the ferromagnetic plate 3. The other peripheral part is wrapped around the peripheral part of the ferromagnetic plate 3.
In FIG. 12, the entire periphery of the leg member 5, which is made of a funnel-shaped tube with one end flared into a brim shape, is integrated with the ferromagnetic protrusion 3.
In this embodiment, the leg member 5 is integrated with the ferromagnetic plate 3 by welding it to the ferromagnetic plate 3. The locking piece 5c is formed by standing up on the side of the attracting surface through the periphery of the ferromagnetic plate 3 formed integrally with the ferromagnetic plate 3. .

13 to 17 show various embodiments of the suction device A. In FIG. 13, a ferromagnetic protrusion 2a is formed integrally with a ferromagnetic plate 2, and a funnel-shaped tube 6 with an expanded end is expanded. The open end is welded to the surface of the ferromagnetic plate 2 opposite to the ferromagnetic protrusion 2a, and the tube 6 is inserted into the hole drilled in the mounting surface and caulked by the protruding end. It is.

In FIG. 14, the ferromagnetic protrusion 2a is not provided, and the mounting member is a disc-shaped leg plate with the same diameter as the ferromagnetic plate 2. A pair of incisions are made from the periphery around the center of the leg plate, and the portion between the notches is attached to the leg plate 5. The leg plate 5 is bent perpendicularly to form a pair of legs 5a, 5a, and the leg plate 5 is attached to the ferromagnetic plate 2 and integrally supported on the non-magnetic case 4.

In FIG. 15, the insertion gap S is widened in a tapered shape on the suction surface side, and the mounting member is a leg plate 5 having a pair of legs 5a, 5a welded to the outer surface of the ferromagnetic plate 2.

FIGS. 16 and 17 show that the permanent magnet 1 is a plastic magnet made of synthetic resin containing hard magnetic powder, and a non-magnetic case is not used. In this case, the ferromagnetic plate 2 is molded into the permanent magnet 1. Fig. 16 shows a double-sided adhesive sheet 7 pasted on two sides of the ferromagnetic plate and attached to the mounting surface.
The one in Figure 7 has a shield plate 8 made of a ferromagnetic plate on the attracting surface side.
is attached to prevent magnetic leakage from the magnetic pole face side, and when the ferromagnetic plate 3 is not attracted to the magnetic pole face side, magnetic recording materials such as magnetic cards and magnetic tapes come into contact with this magnetic pole face side. This is designed to prevent accidents such as destruction of magnetic recording even when the magnetic recording is performed.

[Effect] The engagement tool according to the present invention is configured as described above,
In particular, the insertion gap of the suction tool is at least such that the opening has a long diameter on one side and a short diameter on the other, and the suction tool has a leg member attached to the surface of the ferromagnetic plate 3 without the ferromagnetic projections 3a. This leg member is provided with a locking piece portion 5c raised up on the suction surface side through the side edge of the ferromagnetic plate 3 at least in the short diameter direction of the insertion gap, so that insertion is prevented. By attaching the short diameter side of the gap in the opening direction of the lid of a bag, etc. and the engagement piece 5c facing the opening side, when the lid is opened, the ferromagnetic protrusion 3a of the suction tool will be engaged due to the insertion gap. At the same time, the locking piece 5C comes into pressure contact with the side surface of the suction tool, so the engagement of the engaging tool does not come off.
Although an unreasonable force is applied to C and C, there is no risk of damage as they reinforce each other.

If the suction tool is removed from the longitudinal direction of the insertion gap, there will be a wide gap between the insertion gap and the ferromagnetic protrusion 3a, and the locking piece 5C will move along the side of the suction tool, so it will be engaged. can be easily removed.

Therefore, if this engagement tool is attached to the lid of a bag, etc. with the locking piece 5C facing the opening side and the minor diameter direction of the insertion gap being the opening direction of the lid, the lid of the bag will not be accidentally opened. There is no need to worry.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the engaging tool according to the present invention, Fig. 2 is a sectional view showing how it is attached to a bag, and Fig. 3 shows the suction surface side of the suction tool and the suction target. FIG. 4 is a sectional view taken along the line X-X of the suction tool, FIG. , FIGS. 7 and 8 are cross-sectional views showing various configurations of the engaging tool, FIGS. 9 and 10 are exploded perspective views of various embodiments of the suction target, and FIGS. 11 and 12 are the suction target. 13 to 17 are sectional views of various other embodiments of the suction tool, and FIG. 18 is a sectional view of a conventional example. A: Suction tool, B: Suction target, C: Main body, C
゛...Lid, S...Insertion gap, 1...Permanent magnet, 2
．． 3... Ferromagnetic plate, 2a, 3a... Ferromagnetic protrusion, 5
... Leg member, 5c... Locking piece part.

Claims (3)

[Claims] 1. An adsorption tool having at least a permanent magnet 1 and a ferromagnetic plate 2 attached to one magnetic pole surface of the permanent magnet 1; an adsorbed tool having a protrusion 3a, the adsorbing tool is provided with an insertion gap for the ferromagnetic protrusion 3a of the adsorbed tool extending between the magnetic pole faces of the permanent magnet 1; The ferromagnetic plate 3 of the tool is attracted to the attraction surface formed by the other magnetic pole surface of the permanent magnet 1, and the ferromagnetic protrusion 3a is protruded from the ferromagnetic plate 2 or this ferromagnetic plate 2 through the insertion gap. ferromagnetic protrusion 2a, the insertion gap of the suction tool is such that at least an opening of the insertion gap has a long diameter on one side and a short diameter on the other side, and has a leg member attached to the surface of the ferromagnetic plate 3 without the ferromagnetic protrusion 3a, and this leg member has a locking member raised up on the side of the attracting surface through the side end of the ferromagnetic plate 3. An engagement tool characterized in that the piece portion is provided at least in the short diameter direction of the insertion gap. 2. 2. The engaging tool according to claim 1, wherein the insertion gap in the suction tool is formed by a permanent magnet. 3. Claim 1 characterized in that the insertion gap in the suction device is formed by a non-magnetic case that covers the permanent magnet 1.
Engagement tool described.