JP2019216946A - Magnet hook - Google Patents

Abstract

To provide a magnet hook that is hard to fall off.SOLUTION: A magnet hook according to an embodiment of the present application includes: a magnet part having a magnet portion having a first surface that is magnetically attached to a metal wall surface; a covering part that covers at least the first surface of the magnet portion; and a hook part having a suspension part projecting from a position apart from the magnet portion by a fixed distance in a perpendicular direction, the hook part having a second surface that comes into contact with the metal wall surface on the substantially same plane as the contact surface between the first surface and the metal wall surface, in the metal wall surface side facing the side provided with the suspension part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a magnet hook, for example, and more particularly to a magnet hook attached to a metal wall surface such as a steel plate using magnetic attraction.

  2. Description of the Related Art Conventionally, as a magnet hook, a product in which a hook is suspended from a housing having a permanent magnet attached to the back side has been widely known. In such a general magnet hook, there has been a problem that when the load due to the suspended object exceeds a certain limit, the magnet is peeled off from the wall surface.

  In order to solve the above-described problem, Patent Literature 1 discloses a technical idea that a large reaction force against a moment is generated using the principle of leverage, and the latching and holding is strengthened in combination with the magnetic force of the magnet body.

  Patent Literature 2 discloses a technical idea that a hook having a magnet as a fulcrum is provided and a load is applied to the hook to obtain a frictional resistance between the hook and a wall surface.

  However, according to the invention disclosed in the above-mentioned references, the frictional resistance obtained from the reaction force against the moment is combined with the magnetic force to enhance the prevention of peeling off, but is not a technical idea to suppress the moment itself. In addition, for example, when the distance between the hook and the metal wall surface is long and the moment becomes large, there is a problem that a satisfactory peeling prevention effect cannot always be obtained.

JP 2009-106688 A JP 2007-303666A

  The present invention has been made to solve the above problems, and has as its object to provide a magnet hook that is difficult to peel off.

  In order to solve the above problems, the present invention reduces the amount of a moment applied to a hook, reduces a force for peeling off a magnet generated by the moment, and reduces a force for pushing a metal wall surface by a frictional force. To enhance the retaining force.

  A magnet hook according to a first aspect of the present invention includes a magnet portion having a magnet portion having a first surface magnetically attached to a metal wall surface, a covering portion covering at least the first surface of the magnet portion, The magnet part is a hook part having a suspension part protruded from a position spaced apart by a certain distance in the vertical direction, and the metal wall side facing the side on which the suspension part is provided has the first part. A hook portion having a second surface in contact with the metal wall surface on substantially the same plane as a contact surface between the surface and the metal wall surface.

  Here, the first surface includes a surface where the magnet part contacts the metal wall surface in order to adhere the magnet product to the metal wall surface using magnetic force. The shape of the first surface is not limited to a substantially flat surface, but may be another shape capable of sufficiently exerting a magnetic attraction force, or may be, for example, a shape having a structure for enhancing a frictional force. .

  The suspension portion includes a portion where the suspended object can be suspended, and the load point includes a point at which, when the suspended object is suspended, gravity applied to the suspended object is loaded.

  The metal wall side opposite to the side where the suspension portion is provided includes the side where the hook portion faces the metal wall surface.

  The second surface includes a surface where the hook portion contacts the metal wall surface side, and is substantially coplanar with a contact surface between the first surface and the metal wall surface. For example, the first surface may be separated from the first surface, or may be continuous with the first surface.

  Generally, for example, one surface of a magnet is magnetically attached to a metal wall, and is coaxial with the center axis of the magnet (when the magnet is disk-shaped) or coaxial with the center of gravity of the magnet (when the magnet is non-disk-shaped, for example, rectangular plate-shaped). When the load of the load W is suspended from the point of action P1 on the suspension part, the magnet is moved when the distance from the point of action P1 to the base end B of the suspension part is L1. The force to be peeled from the metal wall is a moment W × L1 due to the load W applied to the base end B. However, when the suspension portion is projected differently from the shaft relating to the same disk-shaped magnet, the magnet is Force from the metal wall, the influence of the moment W × L1 due to the load W applied to the base end B, the larger the distance between the shaft related to the magnet and the shaft related to the suspension, the more the metal wall and Large frictional force The smaller (ie, the larger the contact area with the metal wall), the smaller. Therefore, in one embodiment of the present application, the magnet is less likely to come off the metal wall than in the conventional case.

  Further, the force pressing the metal wall surface through the second surface is converted into a friction force generated between the metal wall surface and the second surface, and combined with the friction force on the first surface, the magnet product slides down. Enables enhanced prevention.

  According to a second aspect of the present invention, in the first aspect, the magnet portion and the hook portion are movably connected.

  Here, the movable connection includes, for example, a connection in which a sleeve is provided when the hook portion and the magnet portion are connected by a screw, and the hook portion and the magnet portion can rotate around the screw. Accordingly, the hook portion is pulled downward by the load and easily located vertically downward, which is suitable for obtaining the effect of reducing the force for peeling the magnet.

  As a third aspect of the present invention, in the first or second aspect, the magnet unit further includes a magnetic flux adjusting unit that concentrates a magnetic flux generated by the magnet unit.

  The magnetic flux adjusting unit typically covers the magnetic flux so as not to leak in a direction other than the direction in which the magnet (for example, a permanent magnet) is attracted. However, various other modes are possible. Even if it is like a back plate that covers only the side opposite to the direction in a plate shape, it is sufficient if the magnet itself has a sufficient magnetic force.

  It is preferable that the covering portion covers substantially the entire surface of the magnet portion and the magnetic flux adjusting portion. However, the present invention is not limited to this embodiment, and it is sufficient that the covering portion covers at least the first surface that is in contact with the metal wall surface. .

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the magnet portion and the hook portion are detachably coupled by a first coupling portion.

  The first coupling portion includes a component that realizes attaching (coupling) the hook portion to the magnet portion. As the connecting portion, a screw-shaped mechanism is generally used. Similarly, any device having a function of connecting the hook portion to the magnet portion may be used, and the “connecting portion” in each embodiment of the present application is a screw. The mechanism is not limited to the above, and may be, for example, a nut, a bolt, a screw, or various other joint fittings. It may be a mode of bonding.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the hook portion and the suspension portion are detachably coupled by a second coupling portion.

  The second coupling portion includes a component for realizing attachment (coupling) of the suspension portion to the hook portion, similarly to the first coupling portion, and is not limited to a screw-shaped mechanism. Bolts, screws, and other various joint fittings may be used, or, for example, a mode in which the coupling portion is made of resin and is coupled by a structure that fits with a suspension portion also made of resin.

  According to a sixth aspect of the present invention, in the fourth aspect, a buffer portion for protecting the covering portion is further provided between the coupling portion 1 and the covering portion.

  The buffer part includes a part that buffers the cover part so as not to be damaged when a strong stress is generated in a screw or the like. By being disposed between the head of the screw and the covering portion, cracks in the covering portion are prevented, and furthermore, rust is generated in the magnet portion due to moisture entering from the cracks. As the material, for example, a resin or silicone rubber may be used, or other various materials having elasticity and abrasion resistance may be used so as not to damage the covering portion.

  According to the first aspect of the present invention, it is possible to provide a magnet hook which is hardly peeled off in a magnet hook attached to a metal wall surface by using a magnetic force of a magnet.

  According to the second aspect of the present invention, it is possible to provide a magnet hook which is less likely to peel off by more efficiently reducing the force for peeling off the magnet.

  According to the third aspect of the present invention, it is possible to provide a magnet hook in which the magnetic force of the magnet section is enhanced by the magnetic flux adjusting section and is hard to peel off.

  According to the fourth aspect of the present invention, it is possible to provide a magnet hook in which the magnet portion and the hook portion are interchangeable and hard to peel off.

  According to the fifth aspect of the present invention, it is possible to provide a magnet hook in which the hook portion and the suspension portion are interchangeable and hard to peel off.

  According to the sixth aspect of the present invention, it is possible to provide a magnet hook which is prevented from being damaged by the buffer portion and which is prevented from being damaged.

FIG. 1 is a schematic side view illustrating the entirety of a magnet hook according to an embodiment of the present invention. It is a top view of the magnet hook concerning a 1st embodiment of the present invention. It is a detailed sectional view of a magnet hook concerning a 1st embodiment of the present invention. It is a back view of the magnet hook concerning a 1st embodiment of the present invention. FIG. 3 is a conceptual cross-sectional view for describing a force for peeling off a magnet according to one embodiment of the present invention. It is a detailed sectional view of the magnet hook concerning a 2nd embodiment of the present invention. It is a top view of the magnet hook concerning a 3rd embodiment of the present invention. It is a detailed sectional view of a magnet hook concerning a 3rd embodiment of the present invention. It is a back view of the magnet hook concerning a 3rd embodiment of the present invention. It is a top view of the magnet hook concerning a 4th embodiment of the present invention. It is a detailed sectional view of the magnet hook concerning a 4th embodiment of the present invention. It is a back view of the magnet hook concerning a 4th embodiment of the present invention. FIG. 7 is a perspective view showing four examples (a basic shape, a round hole shape, a polished shape, and a bar shape) of a suspension portion according to an embodiment of the present invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic side view showing the entire magnet hook according to the first embodiment of the present invention, FIG. 2A is a top view thereof, FIG. 2B is a detailed sectional view thereof, and FIG. 2C is a rear view thereof.

  As a schematic configuration, a magnet hook 1 according to one embodiment of the present invention includes a magnet part 2A, a hook part 3, and a suspension part 4B. The magnet part 11 and the magnetic flux adjusting part 12 incorporated in the magnet part 2A are covered with a covering part 10 made of silicon rubber or the like. The first surface 5 is formed by covering the side of the magnet unit 11 facing the magnetic flux adjusting unit 12 with the covering unit 10. The magnet portion 2A and the hook portion 3 are connected by a first connecting portion 30. That is, the hook portion 3 is connected so as to fit the outer peripheral side surface of the columnar magnet portion 2A.

  In the first embodiment, a head 41 such as a screw, which is a second coupling portion, forms the second surface 6 and is configured to be in contact with a metal wall surface. In order to increase the frictional force between the second surface and the metal wall surface and to prevent the metal wall surface from being damaged, silicon rubber or the like provided around the head 41 of the second coupling portion is The silicon rubber or the like may be formed as a second surface that contacts the metal wall surface.

  Since the cover 10 is made of silicon rubber or the like that transmits the lines of magnetic force of the permanent magnet, the magnet is sufficiently secured in the attraction strength. Since the covering portion 10 covers at least the first surface 5 that is in contact with the metal wall surface, the magnet portion 11 is prevented from directly rubbing and damaging the metal wall surface. The coating location is not limited to this, and may be a mode in which the entire magnet portion is coated.

  In the present embodiment, the suspension portion 4B uses a round-hole type hook, but it is possible to adopt or exchange various shapes and functions according to the preference and use of the user. As another embodiment, the suspension may be integrally formed from the beginning by injection molding a resin in a mold, or the separately formed parts may be integrated by a method such as bonding.

  Next, the operation and operation of the magnet hook configured as described above will be described.

  FIG. 2C-1 is a conceptual cross-sectional view for relatively explaining the operation according to the embodiment of the present application, and FIG. 2A illustrates a conventional form in which a suspension portion is provided coaxially with a magnet, b) shows an embodiment in which the suspension portion protrudes from a shaft related to the magnet according to the embodiment of the present invention. As shown in FIG. 2C-1 (a), generally, for example, one surface of a disk-shaped magnet is magnetically attached to a metal wall, and a suspension portion is provided so as to project from the other surface of the magnet. When the load of the load W is suspended from the point of action P1 on the suspension, when the distance from the point of action P1 to the base end B of the suspension is L1, the force for removing the magnet from the metal wall. Is the moment W × L1 due to the load W applied to the base end B. On the other hand, one surface of the same disk-shaped magnet is magnetically attached to the metal wall, and the suspension portion is provided so as to protrude from a base end B which is vertically separated from the magnet by a certain distance (L2). When the load of the load W is suspended from the point of action P2 on the suspension (FIG. 2C-1 (b)), the distance from the point of action P2 to the base end B of the suspension is L1. Considering the force for removing the magnet from the metal wall, the influence of the moment W × L1 due to the load W applied to the base end B increases as L2 increases and the frictional force with the metal wall increases ( That is, when the friction coefficient is common to (a) and (b), the smaller the area, the larger the contact area with the metal wall. Therefore, in the case according to the embodiment of the present application, the magnet is less likely to come off the metal wall than in the conventional case. In other words, the suspension state can be more stably maintained.

  Next, another embodiment of the present invention will be described. In the following embodiments, configurations and operations similar to those in the above-described embodiment will be replaced with the above description, and description thereof will be omitted.

  FIG. 2D is a detailed sectional view of the magnet hook according to the second embodiment of the present invention. The sleeve 14 is provided on the outer periphery of the shaft portion 32 of the first connecting portion, and the hook portion 3 and the magnet portion 2A are pivotally connected so as to be rotatable about the shaft portion 32 of the first connecting portion. With this configuration, the hook portion is pulled vertically downward (to the left in FIG. 2D) by the load, and it is easy to obtain a suitable position for obtaining the effect of reducing the force for peeling off the magnet.

  FIG. 3A is a top view of a magnet hook according to a third embodiment of the present invention, FIG. 3B is a detailed sectional view thereof, and FIG. 3C is a rear view thereof. The suspension part 4D and the hook part 3 are integrally formed. As a material for forming the second surface 6 which is in contact with the metal wall surface, it is preferable to use rubber or the like having a high coefficient of friction so as to enhance prevention of sliding down without damaging the metal wall surface, but is limited to this. It is not done.

  FIG. 4A is a top view of a magnet hook according to a fourth embodiment of the present invention, FIG. 4B is a detailed sectional view thereof, and FIG. 4C is a rear view thereof. As a schematic configuration, the magnet unit 11 and the magnetic flux adjusting unit 12 built in the magnet unit 2B are covered with the covering unit 10 formed of silicon rubber or the like, and the magnet unit 2B and the hook unit 3 are connected to the first coupling unit 30. And has a buffer section 20. With this configuration, the magnet part 2B and the hook part 3 are interchangeable, and the hook part 3 and the suspension part 4C are interchangeable.

  In the above-described embodiment, a configuration is adopted in which substantially the entire surface of the magnet portion 2B is covered with the covering portion 10 such as silicon rubber. The shape of the magnet part 2B is not limited to the columnar shape shown in FIG. 4B, and for example, a magnet having a square pillar or a star pillar can be used. In such a case, the merit that each component can be replaced as described above can be utilized.

  The buffer unit 20 is attached to the surface of the magnet unit 2B that contacts the metal wall surface by the first coupling unit 30. In the magnet section 2B, the magnet section 11 (for example, a permanent magnet) and the magnetic flux adjustment section 12 have holes at the center, and these are covered with the covering section 10. A recess is formed in the center of the magnet 2B so as to fit the center 22 of the buffer 20 so as to fit. The buffer portion 20 includes a central portion 22 that is coupled to fit into the concave portion of the magnet portion 2B, and a concave portion 13 that accommodates the head portion 31 of the coupling portion on the side of the central portion 22 opposite to the contact side with the hook portion 3. , The through-hole for penetrating the shaft portion 32 of the coupling portion, and the wing portion 21 housed in the relatively shallow recess 13A formed on the surface of the magnet portion 2B.

  In general, the material of the buffer portion 20 is preferably made of a hard resin or the like in order to withstand the stress received from the head of the screw, but is not limited to this.

  The hook part 3, the buffer part 20, and the suspension part 4C connected to the hook part 3, which are connected to the magnet part 2B, are replaceable parts except when they are integrally formed. It can also be sold separately to enjoy the combination and use it for general purpose use.

  In the above-described embodiment, one embodiment of the present invention has been described by exemplifying the illustrated one. However, the present invention can be variously replaced, omitted, or added from the embodiment. For example, in FIG. 2D, FIG. 3B, and FIG. 4B, the form in which the covering portion 10 covers the periphery of the through hole of the first coupling portion shaft portion of the magnet portion 11 is illustrated. The periphery of the hole may be uncoated.

  In general households, offices, schools, exhibition halls, shops, etc., the magnet hooks according to the embodiments of the present invention are magnetically attached to metal cabinet doors, steel shelf supports, etc. Etc. can be suspended. In addition, by magnetically attaching the magnet hook according to the present invention to a metal wall surface, a pillar, or the like in indoor and outdoor warehouses, storerooms, and various other places, not only the above-mentioned articles but also various things can be hung. Therefore, the magnet hook according to each aspect of the present application has applicability in various industries including the stationery industry, the building materials industry, the interior industry, and the like.

1 magnet hook 2 magnet part (permanent magnet)
2A magnet unit (permanent magnet and magnetic flux adjustment unit)
2B magnet part (for mounting permanent magnet and magnetic flux adjustment part / buffer part)
3 Hook part 4 Suspension part 4A Suspension part (basic type)
4B Suspension (round hole type)
4C suspension (Daruma type)
4D suspension part (rod type)
5 First surface 6 Second surface 10 Covering portion 11 Magnet portion 12 Magnetic flux adjusting portion 13 Recessed portion 13A of magnet portion for accommodating head portion of first coupling portion Recessed portion 14 of magnet portion for accommodating wing portion of buffer portion Sleeve 20 Buffer section 21 Blade section 30 of buffer section First joint section 31 Head section of first joint section 32 Shaft section 40 of first joint section Second joint section 41 Head section of second joint section 42 Shaft of second joint

Claims (6)

A magnet unit having a magnet unit having a first surface magnetically attached to a metal wall surface;
A coating portion for coating at least the first surface of the magnet portion;
The magnet part is a hook part having a suspension part protruded from a position at a certain distance in the vertical direction, and the metal wall side facing the side where the suspension part is provided has the first part. And a hook portion having a second surface that is in contact with the metal wall surface on substantially the same plane as a contact surface between the surface and the metal wall surface.   The magnet hook according to claim 1, wherein the magnet part and the hook part are movably connected.   The magnet hook according to claim 1, wherein the magnet unit further includes a magnetic flux adjusting unit that concentrates a magnetic flux generated by the magnet unit.   The magnet hook according to any one of claims 1 to 3, wherein the magnet part and the hook part are detachably coupled by a first coupling part.   The magnet hook according to any one of claims 1 to 4, wherein the hook part and the suspension part are detachably connected by a second connecting part.   5. The magnet hook according to claim 4, further comprising a buffer between the first coupling portion and the covering portion for protecting the covering portion.

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