JPH10165208A - Hook attachment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a deviation in a position in spite of a shock by arraying magnets which are provided with a plurality of magnetic poles where an alternately changing magnetism is permitted to face a contacting surface with an opposite side in a magnetic material cap. SOLUTION: Permanent magnet poles 2 and 3 are arrayed inside the longitudinal direction center groove of the magnetic material cap 5 from this side in one of hook attachments 1 and the magnet poles 2a and 3a are arrayed in the cap from this side in the other side in the same way. Here, an S-pole is permitted to face the opposite side in the magnet pole 2 and an N-pole is permitted to face it in the magnet pole 3. The N-pole is permitted to face the magnet pole 2 in the magnet pole 2a and the S-pole is permitted to face the magnet pole 3 in the magnet pole 3a. At the time of viewing horizontally in an attracted state, the magnet 2a which is made to face the N-pole at a lower side contacts with the magnet 2 which is made to face the S-pole at an upper side and the magnet 3a which is made to face the S-pole contacts with the magnet 3 which is made to face the N-pole. Therefore, even when the deviation in a position occurs at the time of attracting, normal attracting is executed when the deviation is half to below the longitudinal direction length of the respective magnets 2, 3, 2a and 3a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook for clothes, and more particularly to a hook attachment using a magnet structure in place of a clasp of a school collar.

[0002]

2. Description of the Related Art There is a trend in the market for hook attachments using magnets as a locking means for a collar or the like to replace a hook-and-loop type because of the advantage of separation when an excessive force is applied. However, at present, sufficient performance has not been obtained, and it is not practically usable.

[0003]

That is, the conventional magnet type hook attachment is known to have a configuration in which a single magnet is simply attracted to each other or a configuration in which a yoke is arranged around a magnet to form a magnetic circuit. However, these hook attachments have drawbacks such that the suction surfaces of the hook attachments do not match each other when worn, or they are displaced during use and separated by a slight impact. If it looks external, it will be ugly and require constant attention.

The present invention has been made in view of the above-mentioned problems of the prior art,
It is an object of the present invention to provide a hook attachment in which suction surfaces surely adhere to each other when worn, and are not easily displaced by an impact during use.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has been studied in various ways, and a plurality of magnetic poles having a polarity alternately directed to a contact surface with a counterpart are provided in a cap made of a magnetic material serving as a yoke. It has been confirmed that the problem can be solved by arranging the magnets having. In other words, the means of the invention of claim 1 is such that the arrangement of the magnets provided in the cap is alternately NS, and when the magnets are attracted, the magnets are brought into contact with the same arrangement on the other side with different polarities. According to such a means, a plurality of sets of magnets that perform an attracting action are arranged on a similar arrangement magnet on the other side. Then, if the position is slightly displaced at the time of adsorption, a magnetic field repelling each other is generated in an area corresponding to the position deviation, and the position is corrected so as to be correctly adsorbed. Further, by performing the position correction of the suction surface in this manner, the suction can be easily performed with one hand, and the handling property is improved.

According to the first aspect of the present invention, when a plurality of magnet magnetic poles having different directions of the lines of magnetic force are attracted to each other, the attraction force when one side is a combination of a single magnet and a yoke and the other is only a yoke is reduced. As a result, it is possible to significantly improve the attraction force, and furthermore, it becomes a hook having a position correcting function at the time of attraction. According to a second aspect of the present invention, the number of magnetic poles of the magnet is two to three.
The number is the most appropriate number in view of the size of the hook attachment, and if it is larger than this, the magnets that are not the regular attracting magnets will be attracted.

According to a third aspect of the present invention, a magnetism collecting yoke is attached to each magnet on a surface of a plurality of magnet poles in contact with a counterpart. As a result, the magnetic flux is concentrated on the surfaces of the magnets that are attracted to each other, and the attraction force can be increased.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a hook attachment 1 according to a first embodiment of the present invention is used in a pair, and one of the hook attachments 1 (upper side in the figure) is set so that the magnetization direction is the adsorption direction. Permanent magnet magnetic poles 2 and 3 are arranged in a central groove in the longitudinal direction of a cap 5 made of a magnetic material from the near side in the hook attachment 1, and the other hook attachment 1 (lower side in the figure).
The magnet poles 2a and 3a have the same cap 5
Are arranged. Here, the magnet magnetic pole 2 has the S pole facing the partner, and the magnet magnetic pole 3 has the N pole facing the partner. The magnet pole 2a has the N pole directed to the magnet pole 2, and the magnet pole 3a has the S pole directed to the magnet pole 3.

The material of the magnet poles 2, 3, 2a, 3a is a rare earth magnet, and for example, an Nd-based sintered magnet, an Sm-Co-based sintered magnet, an Nd-based plamag, or an Sm-based Co-based plamag can be employed. The reason for using the above-mentioned material is to secure the attraction force. By the way, by using the above-mentioned material, the adsorption maintaining force can achieve 2 kgf or more. The cap 5 is made of an iron-based material such as pure iron or soft magnetic iron, a soft magnetic stainless steel, a Si—Fe alloy called silicon steel, a Ni—Fe alloy called Permalloy, or an Fe—Co alloy called permendur. It is preferable to use a material that allows the lines of magnetic force to pass through with as little resistance as possible.

The cap 5 is provided with a locking member 4 that is moored at a hook mounting portion of the garment. According to the hook attachment 1 having such a configuration, FIG.
As shown in (A), a magnetic circuit is formed by the cap 5. The magnetic circuit has two paths orbiting around the longitudinal direction.

Further, according to such hook attachments 1, 1 in the attracted state, when viewed from the side, due to the difference in the arrangement of the magnetic poles of each other, FIG.
As shown in the figure, the magnet 2 having the upper south pole is attached to the lower N
The magnet 2a facing the pole contacts the magnet 3 facing the north pole, and the magnet 3a facing the south pole contacts the magnet 3 facing the north pole. Therefore, when the magnets are attracted, even if they are misaligned, the misalignment is caused by each magnet 2,
If the length is not more than half the length in the longitudinal direction of 3, 2a, 3a, it is adsorbed in the normal contact state shown in FIG.

In the hook attachment 1, each of the magnetic poles 2, 3, 2a, 3a in the longitudinal direction has a length of about 15 mm, a width of about 5 mm, and a thickness of about 1 mm. The thickness of the cap 5 may be about 1 mm. The outside of the cap and the attracting surfaces of the magnetic poles 2, 3, 2a, 3a can be coated with a rust-proof coating such as Ni.

FIGS. 3 (a) and 3 (b) show cross sections of a hook attachment according to an improved embodiment of the present invention. FIG. 3A is characterized in that the attracting surfaces of the magnets are joined in a form that does not directly contact the facing magnets. This is very effective in terms of preventing the peeling off of the coating of the magnet while having the same attractive force.

In FIG. 3 (b), each magnetic pole 2,
A magnetic flux collecting yoke 6 is joined to the center of the attracting surface of 3, 2a, 3a (only the magnetic poles 2, 2a are shown) by means such as bonding. As the material of the magnetic flux collecting yoke 6, the same material as that of the cap 5 can be used. By providing the magnetic flux collecting yoke 6, the lines of magnetic force are applied to the magnetic poles 2, 3, 2a, 3a.
Gather at the center of the adsorption surface, and the magnetic flux density increases. Since the attraction force is proportional to the product of the square of the attraction area and the magnetic flux density, the attraction force can be increased in this case.

FIGS. 4A and 4B show a further improved embodiment of the present invention. FIG. 4A shows only one of the hook attachments according to the second embodiment. The feature is that the entire circumference of the magnet is surrounded by a cap yoke 5 '. As a result, a magnetic pole having a polarity opposite to that of the adjacent magnetic pole appears at the end point due to the cap yoke portions on both sides in the longitudinal direction of the hook attachment. That is, an S pole is generated on the near side, and an N pole is generated on the opposite side.
Thereby, the position shift correction function can be further enhanced compared to the first embodiment in FIG.

FIG. 4B shows only one of the hook attachments according to the third embodiment. The feature is that the number of magnet poles is three. That is, it has a magnet magnetic pole 7 with the N pole facing the partner from the near side, a magnet pole 8 with the S pole facing the partner, and a magnet pole 9 with the N pole facing the partner.
Also in the third embodiment, like the first embodiment, it has the ability to correct the positional deviation.

[0017]

As described above, according to the invention of this application, the attraction force can be increased, and the positional deviation is corrected by the pair of adjacent magnetic poles, and the attraction surface is always attracted in a state where the attraction surfaces are correctly overlapped. The appearance also improves.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of a hook attachment according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a suction state according to the first embodiment.

FIG. 3A is an explanatory view showing a cross-sectional structure of a hook attachment obtained by improving the first embodiment. (B) It is explanatory drawing which shows the cross-section of another hook attachment which improved the said Embodiment 1. FIG.

FIG. 4A is a configuration diagram showing a second embodiment of the present invention. (B) It is a lineblock diagram showing Embodiment 3 of the present invention.

[Explanation of symbols]

1 is a hook attachment, 2, 3, 2a, and 3a2 are magnets, 4 is a locking member, and 5 is a cap, and the same reference numerals are given to common elements in each drawing.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroaki Hirano 1 Wanowari, Arao-cho, Tokai City, Aichi Prefecture Inside Aichi Steel Works (72) Inventor Yoshiro Tamai 1212 Osaki, Yahama-cho, Tamano-shi, Okayama Prefecture

Claims (3)

[Claims] 1. A locking member anchored to a hook attachment portion of a garment, a cap made of a magnetic material integrated with the locking member, and an alternating contact surface in the cap with a mating side. A hook attachment comprising a magnet having a plurality of magnetic poles arranged in a polarity direction. 2. The hook attachment according to claim 1, wherein the number of magnetic poles of the magnet arranged on the cap is two or three. 3. The hook attachment according to claim 1, wherein a magnetism collecting yoke is attached to a surface of the magnet having a plurality of magnetic poles in contact with a counterpart for each magnetic pole.