JPS6255907A - Connection fixture - Google Patents

Abstract

PURPOSE:To provide easy connection and to reduce bulkiness at the connecting section by a method wherein the plate section of a ferromagnetic member is embedded in a permanent magnet made of thermoplastic resin containing hard magnetic powder as one unit, and a part of the permanent magnet is projected to be a connecting projection. CONSTITUTION:A ring-shaped permanent magnet 1, which is made of synthetic resin containing hard magnetic powder, has a hole 1a in the direction from one magnetic pole plane a to the other magnetic pole plane b, and a ferromagnetic member 2 is embedded in the side of the magnetic pole face a, with its projection 2a facing to the magnetic pole face b in the hole 1a, as one unit at the time of the molding of the magnet 1, so as to constitute a female fixture A for a connection fixture. Moreover, a ring-shaped projection 1b is formed on the magnetic pole face a as one unit, extending from the magnet 1, the projection 1b is inserted into the hole provided on cloth 5, a washer 6 is inserted into a projection end 1c, and the washer 6 is fitted into the projection end 1c, then, the projection end 1c is heated to be fixed. A male fixture B is provided with a ferromagnetic member 3 as one unit, contacts the magnetic pole face b, and is detachably attracted through the hole 1a. Thus, the bulkiness at the connecting section can be prevented.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention uses a plastic magnet as a permanent magnet in an engaging tool that uses a permanent magnet, and it is easy to receive +1- and +l-B'! ! It is an engaging tool with a bulky force of 41.

(Prior Art) Conventionally, when attaching an engaging tool using a permanent magnet to fabrics such as bags, various fastening members such as washer-shaped, cylindrical, and spiral-shaped fastening members having bent legs have been used for the engaging tool. ing.

(Problems to be Solved by the Invention) However, the lL attachment member described in 2. is inserted into a hole in a fabric etc. and the protruding end is bent, or a chain-like member having a hollow part is used to cover it. It is attached by crimping it internally, or crushing it through a washer, or screwing a nut into the protruding screw part, and because the fastening part protrudes from the fabric surface, it is difficult to attach it to bags. etc., are very inconvenient as they get in the way of taking things in and out, or get caught on the bent legs, and when used for clothing, the metal legs must be bent outside of the above-mentioned perspective. It was considered difficult to use the cylindrical tip because caulking the tip of the cylindrical part may damage the cloth, considering the strength of the cloth.

(Means for Solving the Problems) In view of the situation described above, the present invention simplifies the configuration and assembly of the engaging tool itself, and also makes it easy to fasten the engaging tool without bulk. As shown in FIG. 1, the permanent magnet l has a hole 1a extending from one pole face a to the other pole face, and has a common plate portion 2b attached to the pole face a. In an engagement device in which a magnetic member 2 and a ferromagnetic member 3 that is in contact with a magnetic pole face of a permanent magnet 1 are removably attracted to each other through a hole 1a of the permanent magnet 1, the permanent magnet 1 is made of a hard magnetic material. It is formed by molding a thermoplastic synthetic resin containing powder, and the plate portion 2b of the ferromagnetic member 2 is embedded integrally in the magnetic pole face of the permanent magnet 1. This is an engagement tool having a protruding portion 1b for fastening.

(Function) Since the fixing protrusion 1b of the engaging tool is formed of a part of the permanent magnet 1 as described above and is made of thermoplastic synthetic resin,
The fastening protrusion 1b is inserted into a cloth 5 such as clothing by opening a hole ζ1 and inserting the fastening protrusion 1b into the cloth 5, and the protruding end 1c is heat caulked to attach the engaging tool to the cloth 5. Note that even if the fabric 5 is flexible or thin, the protruding edge IC
After inserting the washer 6 into the holder, it can be securely fixed by heat caulking.

(Example) Fig. 1 shows a typical example of the present invention, in which l is a permanent magnet formed into an annular plate shape from a synthetic resin containing hard magnetic powder, and one magnetic pole face a is connected to the other. The ferromagnetic member 2 has a hole 1a facing the magnetic pole face, and the ferromagnetic member 2 has a protrusion 2a integrally formed in the center of a disk-shaped plate portion 2b on the magnetic pole face a side. When the permanent magnet 1 is molded, the female member A of the engagement member is constructed by embedding the permanent magnet 1 in a state facing the magnetic pole side in the hole 1a. In addition, a rod-shaped protrusion 1b is integrally formed at the center of the magnetic pole face a, extending from the permanent magnet 1, and the protrusion 1b is inserted into a mounting hole provided in a fabric 5 such as clothing. After inserting the washer 6 into the protruding end IC, the protruding end 1c
The permanent magnet l is fixed to the fabric 5 by heating and softening it and locking it, so-called heat caulking. B is a male tool that engages with the female tool A, and is made of a ferromagnetic member 3 with a protruding rod portion 3a integrally provided at its center. The portion 3a is in contact with the protruding rod portion 2a, and the plate portion 3b is in contact with the magnetic pole face and is removably attracted thereto.

Reference numeral 4 denotes a member that is worn on the cloth or the like of the male tool B, and is in the shape of a washer having bent leg pieces, and is fixed to the ferromagnetic member 3 by caulking or the like.

In Fig. 2, the protrusion 2a is not provided on the ferromagnetic member 2 of the female A of the engaging tool, and the protrusion 3a of the male B is attached to the plate 2b of the ferromagnetic member 2 of the female A when engaged. In Fig. 3, which shows an example in which the length reaches directly, on the contrary, the length of the protruding rod portion 2a of the ferromagnetic member 2 of the female tool A is increased, and the length of the ferromagnetic member 3 of the male tool B is extended only to the plate portion 3b. The peripheral edge of the plate portion 3b is a protruding edge 3 toward the suction surface side.
This is an embodiment configured to ensure the relative positions of the female and male tools A and B when engaged. In addition, the outer member 4 of the male tool B has a cylindrical shape with one end expanded into a trumpet shape, and the end is welded or soldered to the back side of the attraction surface of the ferromagnetic member 3. The other side is fixed by caulking or by winding it around a washer having a winding periphery and fixing the washer to the ferromagnetic member 3 by welding or caulking. One is used in which the end is inserted into the page, protruded, fitted into the saturation, and caulked within the hollow part to be attached.

FIG. 4 shows that a gap g is provided between the inner circumferential surface of the hole 1a of the permanent magnet l and the protrusion 2a of the ferromagnetic member 2 to prevent a short circuit between the two, and the protrusion 2a and the male The protruding rod portion 3a of the tool is strongly attracted, and the ferromagnetic member 2 is attached to the plate portion 2b.
Fig. 5 shows an embodiment of a female tool A in which the and protruding rod part 2a are separate parts and are integrated by caulking. The ridged edge 1d prevents magnetic recording cards from coming into close contact with the magnetic pole faces when they are not engaged and destroying the magnetic recording. A ferromagnetic magnetic shield plate 7 is embedded in the magnetic pole face of the magnetic pole 7 to prevent magnetic leakage from the face and to prevent destruction of records in magnetic recording carts that are in contact with the face. This is an example. In addition, by combining this with the embodiment shown in FIG. 5, the effect of preventing magnetic recording destruction can be further improved.

(Effect) The ferromagnetic member 2 and the permanent magnet 1 having a common plate portion 2b attached to the magnetic pole surface a of the permanent magnet 1 having the hole 1a from one magnetic pole surface a to the other magnetic pole surface according to the present invention. A ferromagnetic member 3 that comes into contact with the magnetic pole face of the magnet 1 is connected to the permanent magnet l.
In the engaging tool which is removably attracted through the hole 1a, the permanent magnet 1 is made of thermoplastic synthetic resin containing hard magnetic powder, and the plate portion 2b of the ferromagnetic member 2 is made of a permanent magnet. The magnet 1 is embedded in the body, and a part of the permanent magnet is protruded to form a fixing protrusion, so the third tool that holds the permanent magnet 1 of the engagement tool is integrally molded from synthetic resin. Therefore, there is no need to attach Ml, the number of parts is small and the case is inexpensive, and there is no risk of deformation between parts.

Furthermore, the engagement tool can be easily attached by heat crimping, the crimped part is smooth, does not damage the fabric etc. that slides into the crimped part, and is less bulky. Therefore, it is an optimal engagement tool as a fastener for clothes.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, and FIGS.
The figure is a sectional view of another embodiment, and FIGS. 4 to 6 are sectional views of a female engaging tool of an embodiment in which a gap is provided at 1111 between the protruding rod portion of the ferromagnetic member and the permanent magnet. . 1... Permanent magnet, ib... Attachment protrusion, 2.3...
・Ferromagnetic member, 2a, 3a - protrusion, 2b, 3b...
Board part, 5...Dough. core plate r

Claims (1)

[Claims] A common plate portion 2 attached to the magnetic pole surface a of a permanent magnet 1 having a hole 1a extending from one magnetic pole surface a to the other magnetic pole surface b.
In the engagement tool in which a ferromagnetic member 2 having a diameter b and a ferromagnetic member 3 abutting a magnetic pole face b of a permanent magnet 1 are removably attracted via a hole 1a of the permanent magnet 1, the permanent The magnet 1 is made of thermoplastic synthetic resin containing hard magnetic powder, and the plate portion 2b of the ferromagnetic member 2 is integrally embedded in the permanent magnet 1, and a part of the permanent magnet is protruded to form a fixing protrusion. An engagement tool characterized by: