Magnetic retainer

Abstract

To provide a magnetic holder that can be attached to a non-magnetic object to be held or attached and uses magnetic force of a permanent magnet.SOLUTION: A magnetic holder includes a magnetic portion 20 that attracts an object to be held or attached to cover a magnetic holder, which holds the object to be held on the object to be attached, at a tip of a rod-shaped portion 12 extending from the surface of a plate-shaped main body portion 11 made of a non-magnetic material and a support portion 10 having a bulge portion 13 with a larger diameter than the rod-shaped portion and a ring-shaped permanent magnet with an elastic non-magnetic material to form a plate-like shape as a whole, and has a support hole portion 23 penetrating in a thickness direction, and the rod-shaped portion is pushed into the support hole while elastically deforming it to form a single piece, and the object to be held is held against the object to be attached. The support hole portion has an inlet portion 23a located on a support portion side that has an inner diameter smaller than the outer diameter of the bulge portion, and has a locking hole portion 23b on an outlet side that has an inner diameter equal to or larger than the outer diameter of the bulge portion, and the locking hole portion has a depth such that the bulge portion does not extend outward from the locking hole portion.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a magnetic holder having a permanent magnet, which is used to hold an object to be held relative to an attachment object. [Background technology]

[0002] One example of a magnetic holder that utilizes magnetism to attach to an object, such as a metal shelf, and allows the object to be held by the object is the magnetic holder described in Patent Document 1. This magnetic holder has a metal member inserted into a recess on the back of the main body, a magnet held within the metal member, and a hook attached to the bottom end of the main body. This configuration allows the built-in magnet to attract and fix the holder to the metal shelf or the like, and in this state, the object to be held can be hung from the hook. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 57-6206 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the magnetic holder described in Patent Document 1 cannot attach to an object unless it is made of a magnetic material. Furthermore, because this magnetic holder uses a hook to hold the object, the shape of the hook extends downward and then bends back forward, requiring a large amount of space in both the vertical and front-to-back directions. Furthermore, because the magnet is exposed on the back of the magnetic holder, there is a risk that the magnet may easily come off the main body with continued use.

[0005] Therefore, an object of the present invention is to provide a magnetic holder that can be attached to a non-magnetic object and can hold the object using the magnetic force of a permanent magnet, or that can be attached to a non-magnetic object and can hold the object by attaching it to the object using the magnetic force of a permanent magnet. Another object is to provide a magnetic holder that has a compact configuration and whose permanent magnet will not come off even with continued use. [Means for solving the problem]

[0006] In order to solve the above problems, the magnetic holder of the present invention comprises a support portion having a bulge at the tip of a rod-shaped portion extending from the surface of a plate-shaped main body made of a non-magnetic material, the bulge being larger in diameter than the rod-shaped portion, and a magnetic portion in which a ring-shaped permanent magnet is coated with an elastic non-magnetic material to form a plate-like shape overall and has a support hole portion that penetrates through the thickness direction, the magnetic holder being used to hold a holding object against an attachment object by pressing the rod-shaped portion into one piece while elastically deforming the support hole portion, the support hole portion having an inner diameter at an entrance portion located on the support portion side that is smaller than the outer diameter of the bulge portion, and an engagement hole portion on the exit side that has an inner diameter that is the same as or larger than the outer diameter of the bulge portion, the engagement hole portion having a depth that prevents the bulge portion from extending outward from the engagement hole portion when the bulge portion is engaged with the engagement hole portion.

[0007] In the magnetic holder of the present invention, the bulging portion is preferably formed by forming the tip of the rod-shaped portion into a spherical or semispherical shape.

[0008] In the magnetic holder of the present invention, it is preferable that the support portion has a plurality of rod-shaped portions, and the plurality of rod-shaped portions are respectively pressed into the plurality of magnetic portions.

[0009] In the magnetic holder of the present invention, it is preferable that the main body of the support part and the magnetic part both have a disk-like outer shape.

[0010] In the magnetic holder of the present invention, the permanent magnet preferably has a ring shape surrounding the support hole.

[0011] In the magnetic holder of the present invention, the support portion is preferably formed of a hard synthetic resin.

[0012] In the magnetic holder of the present invention, the support part is fixed to an attachment object made of a non-magnetic material, and the object to be held can be held by attracting the object to the magnetic part using the magnetic force of the permanent magnet.

[0013] In the magnetic holder of the present invention, the support part is fixed to a holding object made of a non-magnetic material, and the magnetic part is attracted to an attachment object having a magnetic part by the magnetic force of a permanent magnet, thereby holding the holding object. [Effects of the Invention]

[0014] According to the present invention, a magnetic holder can be provided that can be attached to a non-magnetic object and can hold the object using the magnetic force of a permanent magnet, or that can be attached to a non-magnetic object and can hold the object by attaching it to the object using the magnetic force of a permanent magnet. Furthermore, by having a compact configuration, a magnetic holder can be provided that does not require a large space to hold the object. Furthermore, a magnetic holder can be provided in which the permanent magnet does not easily come off even with continued use. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a configuration of a magnetic holder according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of the magnetic holder shown in FIG. [Figure 3] 1A is a front view of a support part in an embodiment of the present invention, and FIG. 1B is a front view of a magnetic part in an embodiment of the present invention. [Figure 4] FIG. 2 is a cross-sectional view taken along line AA' in FIG. [Figure 5] 10A to 10C are diagrams illustrating a process of inserting a support portion into a magnetic portion in an embodiment of the present invention. [Figure 6] 10 is a side view showing a state in which the magnetic holder fixed to the attachment object holds the object to be held. FIG. [Figure 7] 10 is a side view showing a state in which the magnetic holder fixed to the holding object is attached to the attachment object. FIG. [Figure 8] 10 is a cross-sectional view showing a state in which a magnetic part is attached to a support part in Modification 1. FIG. [Figure 9] 10(A) is a plan view showing the configuration of a support part in Modification 2, and FIG. 10(B) is a plan view showing a magnetic holder in which a magnetic part is attached to the support part shown in FIG. [Figure 10] 9(B) is a perspective view showing a state in which a holding object is held by the magnetic holder shown in FIG. 9(B). DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, a magnetic holder according to an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the magnetic holder 100 includes a support part 10 and a magnetic part 20. 2 or 3(A), the support part 10 has a configuration in which a rod-shaped part 12 extends from the center of the surface 11a of a disk-shaped main body part 11 along the normal direction thereof, and the tip of this rod-shaped part 12 is formed into a spherical bulge part 13 having a larger diameter than the rod-shaped part 12. The support part 10 is made of a non-magnetic, hard material, and the main body part 11, rod-shaped part 12, and bulge part 13 are manufactured integrally by molding, for example, ABS resin (a copolymer synthetic resin of acrylonitrile, butadiene, and styrene) or PP (polypropylene).

[0017] 2, 3(B), or 4, the magnetic part 20 has a disk-like outer shape as a whole, and includes a ring-shaped permanent magnet 21 and a covering part 22 made of an elastic non-magnetic material that covers the entire periphery of the permanent magnet 21. The magnetic part 20 has a support hole 23 that penetrates the disk-like shape in the thickness direction. The support hole 23 is formed to include the central axis 21x of the ring-shaped permanent magnet 21, and the permanent magnet 21 is arranged to surround the support hole 23.

[0018] 4, support hole 23 is located on the back surface 20b side (support part 10 side) of magnetic part 20, and has inlet part 23a that extends cylindrically with the same inner diameter, and locking hole part 23b that continues from inlet part 23a to surface 20a of magnetic part 20. Locking hole part 23b is formed concentrically with inlet part 23a, and has a shape in which the inner diameter increases with increasing distance from inlet part 23a.

[0019] The magnetic part 20 is manufactured, for example, by placing a ring-shaped permanent magnet 21 in a mold and then injecting a material for forming the covering part 22 into the mold to form the magnetic part 20. Examples of the permanent magnet 21 include a neodymium magnet, a ferrite magnet, and an alnico magnet, and examples of the covering part 22 include synthetic rubber and silicone resin (synthetic resin).

[0020] As shown in Figure 4, the magnetic holder 100 is used in a state where the rod-shaped portion 12 and the bulge portion 13 of the support portion 10 are pushed or press-fit into the support hole 23 of the magnetic portion 20 while the support hole 23 is elastically deformed. In this state, the bulge portion 13 is positioned within the locking hole 23b of the support hole 23, and the maximum width D1 of the bulge portion 13 is larger than the inner diameter D2 of the inlet 23a, so that the bulge portion 13 is locked and the rod-shaped portion 12 is prevented from coming off. The support portion 10 is fixed to the attachment object using, for example, double-sided tape, adhesive, or screws. A holder object having a magnetic portion is attracted to and held by the magnetic force of the permanent magnet 21 of the magnetic portion 20.

[0021] 4, the shape of the bulging portion 13 of the support part 10 is such that the maximum width D1 in a plane perpendicular to the extension direction of the rod-shaped portion 12 is greater than the inner diameter D2 of the inlet portion 23a of the magnetic part 20 and is smaller than the maximum inner diameter D3 of the locking hole 23b. Furthermore, in the extension direction of the rod-shaped portion 12, the bulging portion 13 does not extend outward from the locking hole 23b when positioned within the locking hole 23b; in other words, it does not protrude from the surface 20a of the magnetic part 20. Therefore, in the extension direction of the rod-shaped portion 12, the height H1 of the bulging portion 13 is equal to or less than the depth (height) H3 of the locking hole 23b.

[0022] Here, the outer diameter D4 of the cylindrical rod-shaped portion 12 is equal to or smaller than the inner diameter D2 of the inlet portion 23a, and the length H2 of the rod-shaped portion 12 in the extension direction of the rod-shaped portion 12 is the same as the depth (height) H4 of the inlet portion 23a (see Figure 5(A)).

[0023] The shape of the bulge 13 is such that when it enters the locking hole 23b, it can fit into the shape of the locking hole 23b and be locked, and can be, for example, spherical, hemispherical, truncated conical, cylindrical, or prismatic. Also, as long as the maximum width D1 in the outer shape is greater than the inner diameter D2 of the inlet 23a of the support hole 23 of the magnetic part 20 and the size is such that it does not extend outward from the locking hole 23b, it may be hollow, for example, cylindrical or annular.

[0024] The rigidity of the support part 10 is such that it can be integrated with the magnetic part 20 and maintain a disk-like shape when holding an object to be held, thereby maintaining the entire back surface of the main body part 11 in contact with the object to be attached, and ensuring the attachment strength to the object to be attached, and is set according to the strength of the magnetic force of the permanent magnet 21 in the magnetic part 20, the expected weight of the object to be held, the thickness, area and other shapes of the main body part 11, the length and thickness of the rod-shaped part 12, etc.

[0025] The elasticity of the covering portion 22 of the magnetic portion 20 is such that it can reliably maintain the covering of the permanent magnet 21, and that by applying a force greater than a predetermined level, the bulging portion 13 can be pushed into the entrance portion 23a of the support hole 23, and the rod-shaped portion 12 and the bulging portion 13 can be moved toward the locking hole 23b. Furthermore, when the bulging portion 13 enters the locking hole 23b from the entrance portion 23a, the difference between the inner diameter D2 of the entrance portion 23a and the maximum width D1 of the bulging portion 13 prevents the bulging portion 13 from returning to the entrance portion 23a and causes it to be locked in the locking hole 23b, unless the support portion 10 is pulled toward the entrance portion 23a with a force greater than a certain level.

[0026] The main body 11 of the support part 10 is not limited to a disk shape as long as it is plate-shaped, and may be rectangular in plan view, for example. When the main body 11 is rectangular, the rod-shaped part 12 is provided so as to extend from the center of the plane along the normal direction.

[0027] The magnetic holder 100 is manufactured by pressing the support part 10 into the magnetic part 20 and integrating them through the steps shown in order in FIGS. 5(A) to 5(D). As shown in Fig. 5(A), with the central axis 11x of the main body 11 of the support part 10 and the central axis 21x of the permanent magnet 21 overlapping, the support part 10 and the magnetic part 20 are made to face each other, and from this state, the bulging part 13 is pushed into the support hole 23 from the inlet 23a of the magnetic part 20 located on the support part 10 side (Fig. 5(B)). As shown in Fig. 5(C), when the support part 10 is pushed into the magnetic part 20 with a force equal to or greater than a predetermined value and the bulging part 13 moves within the inlet 23a of the support hole 23, the inlet 23a is elastically deformed and pushed open by the elasticity of the covering part 22. Then, as shown in Figure 5(D), when the bulge portion 13 leaves the entrance portion 23a and enters the locking hole portion 23b, and the pushing operation of the support portion 10 is stopped, the entrance portion 23a returns to its original inner diameter D2, so that the movement of the bulge portion 13 is restricted and positioned by the entrance portion 23a with a small inner diameter.

[0028] 6, the magnetic holder 100 has the support part 10 fixed to the magnetic part (magnetic part) of the attachment object T11 in advance using double-sided tape or adhesive, and the magnetic part 20 is arranged on the outside. When the attachment object T12, which has a magnetic part at least in part, is attached to the magnetic part 20 of the magnetic holder 100, it is attracted by the magnetic force of the magnetic part 20, and the attachment object T12 is held to the attachment object T11 by the magnetic holder 100.

[0029] Here, examples of the attachment object T11 shown in FIG. 6 include a non-magnetic wall surface or the outer surface of a refrigerator, and examples of the holding object T12 include a cutlery or tableware made of a magnetic metal.

[0030] As shown in Figure 7, it is also possible to fix the support part 10 side of the magnetic holder 100 to the holding object T22 in advance using double-sided tape or adhesive, and then attach the magnetic part 20 arranged on the outside to the attachment object T21 having a magnetic part, and adsorb it by the magnetic force of the magnetic part 20.

[0031] Examples of the holding object T22 shown in FIG. 7 include non-magnetic bottles and other containers, and examples of the attachment object T21 include plate materials having magnetic portions on at least part of the surface.

[0032] In variant example 1 shown in Figure 8, the support part 210 is fixed to the attachment object T31 by using double-sided tape or adhesive, or by driving a plurality of screws 214 into the attachment object T31, each of which is inserted into a plurality of holes 211a that penetrate the main body part 211 in the thickness direction.

[0033] In the support part 110 of the second modification shown in Fig. 9(A), the main body part 111 is formed in a long plate shape, and a plurality of rod-shaped parts 12 and bulging parts 13 similar to those in Figs. 1 to 4 are arranged at equal intervals in the direction in which the main body part 111 extends (the left-right direction in Fig. 9(A)). As shown in Fig. 9(B), the plurality of bulging parts 13 of the support part 110 are each arranged with a magnetic part 20 similar to those in Figs. 1 to 4.

[0034] As illustrated in FIG. 10, the magnetic holder 200 shown in FIG. 9(B) has the support part 110 fixed to the attachment object T41, and can hold a magnetic metal ladle T42, a spatula T43, or other tableware to the attachment object T41 by magnetically attracting the magnetic part 20.

[0035] As configured as described above, the above embodiment provides a magnetic holder that has a compact configuration without a hook or other large, space-consuming component, can be easily attached to a target or object to be held, and can hold a non-magnetic target or a non-magnetic target. A magnetic target or object to be held can be easily attached to or detached from the magnetic part 20. When the magnetic holder holds the target to the target, a gap equal to the thickness of the magnetic holder can be formed between the target and the object. This gap acts as a ventilation passage when the target is held for a long period of time, preventing mold from growing on the target. The permanent magnet 21 is covered by the covering part 22, preventing rusting of the permanent magnet 21. Furthermore, because covering portion 22 is elastic, when metal tableware or the like is attracted to magnetic portion 20, there is no contact noise between permanent magnet 21 and the tableware or the like, and the tableware or the like can be held quietly, and furthermore, because there is no direct contact with permanent magnet 21, there is no risk of the tableware or the like being damaged by impact when attracting. Since it can be easily placed at a desired interval on the object to be attached and can be formed in any size and shape, it can be used as an indicator to show the placement position of the object to be held. Although the present invention has been described with reference to the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment, and improvements or modifications can be made within the scope of the purpose of improvement or the concept of the present invention. [Explanation of symbols]

[0036] 10 Support part 11 Main body 11a Surface of the main body 11x Main body axis 12 Rod-shaped part 13 Bulge 20 Magnetic part 20a Magnetic surface 20b Back of magnetic part 21 Permanent magnets 21x central axis of permanent magnet 22 Covering part 23 Support hole 23a Entrance 23b Locking hole 100, 200 magnetic holder 110, 210 Main body 111, 211 Main body 211a Hole 214 Bis D1 Maximum width of bulge D2 Inner diameter of inlet D3 Maximum inner diameter of locking hole D4 Outer diameter of rod H1 Height of the bulge H2 Length of the rod H3 Depth of locking hole H4 Inlet depth T11, T21, T31, T41 installation target T12, T22 retention target T41 Ladle (Holding Target) T42 Spatula (Holding object)

Claims

1. a support portion having a rod-shaped portion extending from a surface of a plate-shaped main body made of a non-magnetic material and a bulging portion at a tip of the rod-shaped portion, the bulging portion having a diameter larger than that of the rod-shaped portion; a magnetic portion in which a ring-shaped permanent magnet is covered with an elastic non-magnetic material to form a plate-like shape as a whole, and which has a support hole portion penetrating in the thickness direction; The rod-shaped portion is elastically deformed and pressed into the support hole portion to form a single piece, thereby holding a holding object relative to an attachment object, the support hole portion has an inlet portion located on the support portion side, the inner diameter of which is smaller than the outer diameter of the bulging portion, and an engagement hole portion located on the outlet side, the engagement hole portion having an inner diameter equal to or larger than the outer diameter of the bulging portion; The magnetic holder is characterized in that the locking hole portion has a depth such that the bulge portion does not extend outward from the locking hole portion when the bulge portion is locked in the locking hole portion.

2. 2. The magnetic holder according to claim 1, wherein the bulging portion is formed by forming the tip of the rod-shaped portion into a spherical or semispherical shape.

3. the support portion has a plurality of the rod-shaped portions, The magnetic holder according to claim 2 , wherein the plurality of rod-shaped portions are respectively pressed into the plurality of magnetic portions.

4. 3. The magnetic holder according to claim 2, wherein the main body of the support and the magnetic portion both have a disk-like outer shape.

5. The magnetic holder according to claim 4 , wherein the permanent magnet has a ring shape surrounding the support hole.

6. 3. The magnetic holder according to claim 2, wherein the support portion is made of a hard synthetic resin.

7. 3. The magnetic holder according to claim 2, wherein the support portion is fixed to an attachment object made of a non-magnetic material, and the object is held by attracting the object, which has a magnetic portion, to the magnetic portion using the magnetic force of the permanent magnet.

8. 3. The magnetic holder according to claim 2, wherein the support portion is fixed to the object to be held, which is made of a non-magnetic material, and the magnetic portion is attracted to the object to be held, which has a magnetic portion, by the magnetic force of the permanent magnet.

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