JP2592933Y2 - Magnetic adsorption tool - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a member provided with a magnet by magnetically adsorbing to a wall surface of a magnetic body such as a door, a cabinet made of steel, a desk, and a housing of an electric appliance using a magnet. And a magnetic attracting tool held on the wall.

[0002]

2. Description of the Related Art A so-called magnet hook is well known as a magnetic attraction tool that uses a magnet to attract a magnetic material to a wall surface to hold a member to which the magnet is attached. The magnet hook is provided with a hook at a lower portion of a housing made of, for example, a synthetic resin, and a magnet provided on a back surface of the housing is adsorbed to a wall surface of a magnetic body so that an article can be hung on the hook.

By the way, this kind of magnet hook is
There are two types: a type in which the magnet part obtains a holding force by combining a magnet and a yoke, and a type in which the holding force is obtained by using a magnet sheet. In these magnet hooks, a combination type of a magnet and a yoke is generally widely used because a higher holding force can be obtained than that using a magnet sheet. However, since the yoke portion is made of iron, the surface to be attracted to which the yoke comes into contact during attachment and detachment may be damaged. In order to prevent such scratches, magnets that are in contact with the attracted surface and those that are attached to the surface of the yoke with a scratch prevention tape or the like have been provided, but the holding force of the magnet is reduced by the scratch prevention tape, The holding force is reduced due to the frictional resistance of the tape surface.

On the other hand, a magnet sheet using a magnet sheet cannot generally obtain a high holding force, but if it is used as it is, the surface to be attracted is scarcely scratched. Therefore, those using a magnet sheet have been used only for those that want to prevent the surface to be attracted from being damaged even if the holding force is small.

[0005]

However, since the holding force is small, there is a problem that the use of the magnetic attraction device using the magnet sheet is limited in some cases such as holding a light article such as a memo.

The present invention has been made in view of such a background, and an object of the invention is to provide a magnetic attraction device using a magnet sheet capable of increasing a holding force.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a magnetic powder in rubber or synthetic resin material.
In a magnetic attraction device that is attracted to a member to be attracted by a mixed magnet sheet and held at a desired attracting position, the magnetic sheet is opposed to the member to be attracted of the magnet sheet.
Near the center of the surface, a shape smaller than the magnet sheet
Non-slip material with high frictional resistance formed concentrically
It is characterized by the fact that

[0008]

[Action] In the above-described means, an outer edge which is exposed without being covered with non-slip material of the magnet sheet acts as a yoke, exert a strong magnetic attraction force can be reliably held on the suction surface, the If a force is applied in the direction of deviation while being held on the suction surface, the slip is suppressed by the frictional force of the anti-slip material, and a holding force greater than the holding force originally acting between the magnet sheet and the magnetic body can be obtained. it can.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, a magnetic attraction tool is applied to a magnet hook.
2, a hook body 1 made of a synthetic resin molded product, a magnet sheet 2 adhered to the back of the hook body 1, and a surface of the magnet sheet 2 on the side opposite to the hook body as shown in the rear view of FIG. And a non-slip sheet 3 affixed thereto. A hook 5 is integrally formed at a lower front portion of the hook body 1.

As the magnet sheet 2, a well-known magnet sheet formed by mixing magnetic powder with rubber or synthetic resin is used. This magnet sheet 2
It is that being used is cut slightly smaller size than the hook body 1 as shown.

The non-slip sheet 3 is made of, for example, a urethane-based synthetic resin sheet and has a thickness of 0.3 to 0.4 m.
m, the surface friction coefficient is increased, and the magnet sheet 2
Formed in a smaller size than the magnet sheet 2
Substantially in the central portion, the outer edge of the magnet sheet 2 of
4 are concentrically attached so as to be exposed in a ring shape . The reason why such a small size is formed is that the magnet sheet 2
Is made to have an effect like a yoke.

The hook body 1 has a thickness of 3 mm and a diameter of 40 mm.
A magnet sheet 2 having a surface Gauss of 380 to 400 Gauss and a non-slip sheet 3 having a thickness of 0.35 mm and a diameter of 30 mm was adhered to form a magnet hook. did it. On the other hand, the hook with the non-slip sheet 3 removed and only the magnet sheet 2 attached thereto can only hold a weight of about 200 to 250 g, and the provision of the anti-slip sheet 3 reduces the holding force to 2.4 to 250 g. It turns out that it was able to increase by 3.0 times.

On the other hand, if an attempt is made to use a magnet sheet 2 having a strong magnetic force, the magnet sheet 2 necessarily becomes thick. Therefore, when a load is concentrated on the hook 5, a force is generated at the upper portion of the hook main body 1 so as to separate from the surface 7 to be attracted, and acts to peel off the magnet sheet 2. I understood. In particular, it has been found that this is particularly remarkable when the magnet sheet 2 is slightly smaller in size than the hook body 1 or when the magnet sheet 2 has elasticity as in the above-described embodiment.

Therefore, in this embodiment, a projection 6 is provided at a position corresponding to the hook 5 on the back surface of the hook body 1 as can be seen from the explanatory view showing the use state of FIG. The protrusion height of the protrusion 6 is set to a dimension at which the non-slip sheet 3 comes into contact with the attracted surface 7 at least or is slightly retracted.

The magnet hook 1 thus constructed
0, as shown in FIG. 3, the non-slip sheet 3 is attracted by the magnet sheet 2 so as to face the surface 7 to be attracted,
An object is hung on the hook 5. In this case, a moment about the tip of the projection 6 as a fulcrum is applied to the hook body 1 from the hooked object. However, naturally, the surface 6 to be attracted is
, The hook body 1 does not tilt significantly.
As a result, the attraction force of the magnet sheet 2 acts on average, and the frictional force of the anti-slip sheet 3 acts on the front surface of the sheet 3, so that the holding force of the magnet hook 10 itself is smaller than when the projection 6 is not provided. Improve dramatically.

Incidentally, the above-mentioned thickness of 3 mm and diameter of 40
The holding force when the protrusions 6 are provided on a magnet hook 10 in which a non-slip sheet 3 having a thickness of 0.35 mm and a diameter of 30 mm is adhered to a magnet sheet 2 having a thickness of 0.35 mm.
It is possible to hold a weight of 1800 kg, and the provision of the projection 6 increases the holding force by 2.5 to 3.0 times as compared with the case where no holding force is provided.

In the above-described embodiment, when the hook body 1 does not tilt due to the moment, a load is applied in parallel to the surface 7 to be attracted, so that the holding force can be assisted by the frictional force of the non-slip sheet 3. Needless to say, this increases the holding force as compared with the case where the non-slip sheet 3 is not used. Instead of sticking the non-slip sheet 3, a liquid anti-slip agent may be applied.

In this embodiment, the magnet hook 1
This is an example in which the present invention is applied to a device such as a basket, an umbrella stand, a simple shelf, a small container, etc., which are fixed or held by being attracted to a surface to be attracted made of a magnetic material. Applicable to

[0020]

[Effect of the invention] As is clear from the above description, the rubber
Or a magnet made by mixing magnetic powder in a synthetic resin material
A magnetic sucker for holding a member magnet is mounted by adsorbing onto the suction member by using a sheet to the suction position of the suction member, the suction member of the magnet sheet
Near the center of the surface facing the
Use anti-slip material with high frictional resistance formed in a small shape.
According to this invention the heart to provided, as outer edge of the yoke
Function compared to the case with only a magnet sheet.
Can be increased two to three times, and the frictional force of the non-slip sheet can prevent slippage at the time of suction, thereby increasing the holding force.

[Brief description of the drawings]

FIG. 1 is a perspective view of a magnet hook according to an embodiment.

FIG. 2 is a rear view of the magnet hook according to the embodiment.

FIG. 3 is a side view showing a usage state of the magnet hook according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hook main body 2 Magnet sheet 3 Non-slip sheet 4 Outer edge part 5 Hook 6 Projection 7 Adsorption surface 10 Magnet hook

Claims (1)

(57) [Scope of request for utility model registration] 1. A magnetic powder mixed in a rubber or synthetic resin material.
In a magnetic attraction device that is attracted to a member to be attracted by a combined magnet sheet and held at a desired attraction position,
Of the surface of the magnet sheet facing the member to be attracted
Almost in the center, smaller than the magnet sheet
The formed anti-slip material with high frictional resistance is provided concentrically.
A magnetic attraction device characterized in that it is provided .