JPH03235303A - Clamp - Google Patents

Abstract

PURPOSE:To prevent a cover from loosely opening by providing the permanent magnet, or the like of an attracting piece with a long/short diameter opening, to which the ferromagnetic projection of an attracted piece is inserted, and also erecting the necessary part of the ferromagnetic plate of the attracted piece. CONSTITUTION:The nonmagnetic case 4 and the permanent magnet 1 of an attracter A, which forms a clamp with an attracted piece B, are provided with a long/short diameter openings 4a and 1a, in which the ferromagnetic projection 3a of the attracted piece B is inserted, whereby the attracted piece B is locked magnetically by the attracting piece A. If one tries to open the cover in the direction of the short diameters, where the space is small, for the openings 4a and 1a, the clamp piece 3c, erected at the necessary part, of the ferromagnetic plate 3 of the attracted piece B is clamped being attracted by the magnet 1, and the cover is opened only in the direction of the long diameters of the openings 4a and 1a. By this constitution, the opening of the cover of a bag, or the like is prevented from opening loosely.

Description

[Detailed Description of the Invention] [Industrial Application Field] 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] A conventional engagement tool using a permanent magnet includes a ferromagnetic plate 52 attached to one magnetic pole surface of a permanent magnet 51 having a hole 51a extending from one magnetic pole surface to the other magnetic pole surface. A ferromagnetic plate 53 is removably attracted to the magnetic pole surface of the ferromagnetic plate 52, and a ferromagnetic protrusion S2a 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 which is adapted to be attached to the other ferromagnetic plate 52 or 53 or the other ferromagnetic protrusion 52a or 53a. A to-be-adsorbed device B consisting of a ferromagnetic plate 53 and a ferromagnetic protrusion 53a is attached to the lid C° which is closed in an overlapping manner to the other side, and a permanent magnet 51, a ferromagnetic plate 52 and a strong A suction tool A integrated with a magnetic protrusion 52a is attached to the magnetic protrusion 52a for adsorption and engagement.

[Problems to be Solved by the Invention] The engaging tool configured as described above and attached to a bag, etc. is opened by holding the lower edge of the lid C' and lifting it diagonally upward. As a result, a lever-like force with the upper part as a fulcrum acts on fiC', and the suction engagement between suction tool A and suction target B is easily disengaged. There was an inconvenience that the lid C° would open without being noticed if the lower end of the C° came into contact with another object and was lifted.The present invention aims to prevent this inconvenience by preventing the lid C° from coming off from one side. The object of the present invention is to provide an engaging tool that can be easily removed from a direction substantially orthogonal to the above.

[Means to solve the problem]

The present invention has an engaging tool configured as follows for the above purpose.

That is, an adsorption tool A having a small number of permanent magnets 1 and a ferromagnetic plate 2 attached to one magnetic pole surface a of the permanent magnet 1;
The suction tool B has a ferromagnetic plate 3 and a ferromagnetic projection 3a protruding from the ferromagnetic plate 3, and the attraction tool A has a permanent insertion gap S of the ferromagnetic projection 3a. magnet 1
It is provided between the magnetic pole faces a and b of the adsorbed 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 ferromagnetic plate 3 is connected to the attracted plate part 3b which is attracted to the attraction surface. The suction plate part 3b is configured to have a locking piece part 3c rising from at least the side edge of the insertion gap S in the direction of the minor axis d'.

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° with the opening side of the lid C°, when you try to open the lid C', the lower edge of the lid C' will move diagonally upward using the upper part as a fulcrum, so the locking piece will 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 it cannot be pinched, and the engaging piece 3C is also aligned with the side surface of the suction tool A. , so the engagement can be easily released.

That is, even if the lower edge of the bag lid C° is touched by another object and lifted, the lid C' will not open, and by consciously opening the lid C' from the side. It can be opened.

[Embodiment 1] An embodiment 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 elliptical 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 constituted by 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 portion 2a' provided coaxially with the ferromagnetic protrusion 2a is connected to the ferromagnetic plate 2. In the hole drilled approximately in the center of
Seven pieces of ferromagnetic protrusion 2a, ferromagnetic plate 2, and leg plate 5 are inserted from one side and inserted into a hole in the center of leg plate 5 attached to the other side and caulked onto leg plate 5. It is stuck to.

Reference numeral 4 denotes 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, which includes the permanent magnet 1, the ferromagnetic protrusion 2a serving as the body, and the leg plate 5. ,
The ferromagnetic plate 2 is held with the permanent magnet 1 inward, and the locking is performed by bending a plurality of locking claws 4b provided at the lower edge of the non-magnetic case 4 onto the surface of the ferromagnetic plate 2. Thus, suction tool A is constructed.

The insertion gap S is formed by the permanent magnet 1, and as shown in FIG.
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.

Reference numeral 3 denotes an adsorbed root part 3b which is adsorbed to the adsorption surface formed by the magnetic pole face of the permanent magnet 1 in the adsorption tool A, and an adsorbed plate part 3b which is raised from one side edge on the adsorbed surface side of the adsorbed plate part 3b. 3b
It is a ferromagnetic plate consisting of a locking piece part 3c having the same curvature as the outer peripheral edge of the magnetic pole, and has a disk shape with approximately the same diameter as the magnetic pole face, and a small diameter rod part 3a coaxially located approximately in the center. A ferromagnetic protrusion 3a having a circular, polygonal, elliptical, etc. cross section has a small diameter rod portion 3a' inserted into a hole provided approximately at the center of the ferromagnetic plate 3, and is further bent into a U shape. It is inserted into a hole in the center of a leg plate 5 having a pair of legs 5a and 5a and swaged, fixing the ferromagnetic plate 3 and the legs 12ii5 together, and protruding the ferromagnetic protrusion 3a from the ferromagnetic plate 3. Suction tool B
is configured.

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 lid C'' 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 3c facing downward, that is, the side where the lid C° starts to open. .

As shown in FIG. 3, the attracting tool A and the attracting 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 are attracted to each other while being attracted to the attraction surface;
As shown in FIG. 4, the ferromagnetic plate 2 is not provided with a protrusion, and only the ferromagnetic plate 3 is provided with a ferromagnetic protrusion 3a, so that the ferromagnetic plate 3 is attracted to the attracting surface and the ferromagnetic protrusion 3a is directly It is attracted to the magnetic plate 2.

The engaging tool configured as described above and attached as described above will cause the ferromagnetic protrusion 3a to touch the inner surface of the insertion gap S when the lid C' of the bag is lifted as shown by the thin arrow in Fig. 2 to open it. At the same time, the locking piece 3C is pressed 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.

FIG. 9 shows an embodiment in which the locking piece 3C is provided on the entire periphery of the ferromagnetic plate 3 of the suction target B. In this case, when attaching the suction target B, the direction of the locking piece 3C with respect to the opening/closing direction of the lid C' is determined. It has features that do not need to be considered.

FIG. 1θ shows that the permanent magnet 1 and the ferromagnetic plate 3 of the attracted tool B that is attracted to the permanent magnet 1 are rectangular, and a locking piece 3C is attached to the negative side edge of the ferromagnetic plate 3.
This is an example in which

11 to 16 show various embodiments of the suction device A. In FIG. 11, 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. 12, 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 of the leg plate with the center in between, and the portion between the cuts 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 held integrally in the non-magnetic case 4.

In FIG. 13, the insertion gap S is widened in a tapered manner on the suction surface side, and the mounting member is a leg plate 5 having a pair of legs 5a, 5a placed on the outer surface of the ferromagnetic plate 2.

In FIG. 14, a chain 7 is attached to the extending portion of one end of the ferromagnetic plate 2, and the adsorbed tool B has the chain 7 of the adsorbing tool A attached to one end of the locking piece 3c as shown in FIG. The other end is attached.

FIGS. 15 and 16 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 a permanent magnet. Figure 15 shows a double-sided adhesive sheet 8 pasted on two sides of the ferromagnetic plate and attached to the mounting surface.
In the figure, a shield plate 9 made of a ferromagnetic plate is attached to the attracting surface side to prevent magnetic leakage from the magnetic pole face, and when the ferromagnetic plate 3 is not attracted to the magnetic pole face, the magnetic card Even if a magnetic recording material such as a magnetic tape comes into contact with the facing side of the magnetic pole, accidents such as destruction of the magnetic recording are prevented.

The ferromagnetic protrusions 2a, 3a can be attached to the ferromagnetic plate 2.3 by means of the ferromagnetic protrusions 2a, 3a.
When the narrow diameter rod parts 2a' and 3a' provided in a are inserted into the holes of the ferromagnetic plate 2.3 and caulked, when the ferromagnetic protrusion and the ferromagnetic plate are integrally formed, or when the ferromagnetic plate In some cases, a ferromagnetic protrusion is provided by inserting a small-diameter rod portion into the other side, and the portion protruding to the other side is a bolt-like fixture with a thread.

The suction device A and the suction device B can be attached by caulking the leg plate 5 having the pair of legs 5a, 5a to a ferromagnetic plate as described above, and by folding the legs 5a, or by attaching the leg plate 5 having a pair of legs 5a, 5a to a ferromagnetic plate, or by folding the legs 5a. One end is expanded into a funnel shape, and its peripheral edge is wrapped around the peripheral edge of a washer-shaped disk to make it integral, and the washer-shaped disk is formed by protruding the ferromagnetic protrusion 2a or 3a of the ferromagnetic plate 2 or 3. Attach the small diameter rod 2a' or 3a of the ferromagnetic protrusion 2a or 3a to the opposite side by inserting it into the hole in the disk and caulking it, and insert this tube into the hole provided in the bag or the like. A caulked pipe 10 into which the suction tool A or the suction target B is attached by inserting the pipe and crushing the protruding end, or a pipe in which the small diameter rod of the ferromagnetic protrusion is bottle-shaped, a wood screw shape, Or, when a bolt-shaped item is used and it is attached to a bag etc. by caulking, inserting, screwing, etc., or it is attached using a double-sided adhesive sheet 8, adhesive, etc. without using any tools. [Effect 1] The engaging tool according to the present invention is configured as described above,
In particular, the insertion gap of the suction tool is such that at least the opening has a long diameter on one side and a short diameter on the other side, and the ferromagnetic plate 3 of the suction tool is attached to the suction surface formed by the magnetic pole surface of the permanent magnet 1. Since it has a suction plate part 3b and an engagement piece part 3c raised from the side edge of this suction plate part 3b, the short diameter side of the insertion gap is the opening direction of the lid of a bag, etc., and the engagement piece By attaching the part 3c to the open side, when the lid is opened, the ferromagnetic protrusion 3a of the suction tool is locked by the insertion gap, and the locking piece part 3C comes into pressure contact with the side surface of the suction tool. The engagement tool cannot be disengaged. Also, at this time, an unreasonable force is applied to the ferromagnetic protrusion 3a and the locking piece 3c, but since they reinforce each other, no damage occurs.

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 since the locking piece 3C moves along the side of the suction tool, it will not be engaged. can be easily removed.

Therefore, if this engaging tool is attached to the lid of a bag, etc. with the locking piece 3c facing toward the opening side and the minor diameter direction of the insertion gap being in the opening direction of the lid, the lid of the bag can be accidentally opened. You can rest assured that it will not open.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an exploded perspective view of one embodiment of the engaging tool according to the present invention, Fig. 2 is a cross-sectional view showing how it is attached to a bag, and Fig. 3 shows the same suction tool and its cover. A plan view showing the suction surface side of the suction tool, FIG. 4 is a cross-sectional view of the same suction tool taken along the line X-X, FIG. 5 is a cross-sectional view taken along the Y-Y line of the same, and FIG. FIGS. 7 and 8 are cross-sectional views showing various configurations of the engaging tool. FIGS. 9 and 10 are perspective views of an example of the suction target tool.
Figures 1 to 16 are cross-sectional views of various embodiments of the suction tool.
7 to 23 are sectional views of various embodiments of the suction target tool, and FIG. 24 is a sectional view of a conventional example. A...Adsorption device, B...Adsorption device, C...Main body, C
'... Lid, S... Insertion gap, 1... Permanent magnet, 2
．． 3...Ferromagnetic plate, 2a, 3a...Ferromagnetic protrusion, 3
c...Locking piece part. Figure Figure 1 Figure 1 Figure 15 Figure 12 Figure 16 Figure 7 Figure Figure 0

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. An engagement tool that attracts the ferromagnetic protrusion 2a, the insertion gap of the adsorption tool being 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 3 has a suction target plate part 3b that is attracted to the suction surface, and a locking piece part 3c that is raised from at least a side edge of the suction target plate part 3b in the short diameter direction of the insertion gap. An engagement tool. 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.