Magnet holder and magnet attraction mechanism

Abstract

To provide a magnet holder and a magnet attraction mechanism which can facilitate detachment of an attraction target object from an attracting body while obtaining a high attraction force when the attracting body and the attraction target object are attracted to each other.SOLUTION: A magnet holder is configured as a magnet holder 110 that attaches an attraction target object (panel 104) to an attraction base 102 made of a magnetic material. When the attraction base 102 side of the magnet holder 110 is defined as a back surface side and the opposite side of the magnet holder 110 to the attraction base 102 is defined as a front surface side, a plurality of thin plate-shaped magnets 120 and a plurality of thin plate-shaped yokes 130 are alternately arranged, gaps G1 and G2 are formed between some of the plurality of yokes 130 and the attraction base 102 on the back surface side, and the end faces of all the yokes 130 and all the magnets 120 are flush with each other on the front surface side.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a magnet holder for attaching an object to be attracted to an attraction base made of a magnetic material, and to a magnetic attraction mechanism using the same. [Background technology]

[0002] Conventionally, a wall surface is made of a magnetic material, and a magnet is used as a means for attaching an object to the wall surface. For example, Patent Document 1 discloses a "wall surface attachment system including an object and an attachment unit for attaching the object to a wall surface."

[0003] The wall mounting system of Patent Document 1 is characterized in that "the object includes a metal (or a magnet) attached to its back surface, and the mounting unit includes a magnet (or a metal) attached to its front surface, and is configured so that the metal and the magnet come into contact when the object is aligned to a position for mounting to the mounting unit." According to the wall mounting system of Patent Document 1, it is said that an object such as a deodorizing device can be easily mounted on a wall surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-94052 Summary of the Invention [Problem to be solved by the invention]

[0005] The object, such as the deodorizing device in the wall mounting system of Patent Document 1, is considered to be heavy. This requires a very high adhesive force between the metal and the magnet. However, when performing maintenance or replacing the object, it is necessary to remove it from the wall. In this case, if the adhesive force between the metal and the magnet is high, the object cannot be easily removed, and Patent Document 1 does not mention a method for removing the object. For this reason, Patent Document 1 has room for further improvement in terms of removing the object mounted on the wall.

[0006] In view of these problems, the present invention aims to provide a magnet holder and a magnet attraction mechanism that can obtain a high adsorptive force when the attraction body and the attracted object are attracted to each other, while making it easy to remove the attracted object from the attraction body. [Means for solving the problem]

[0007] In order to solve the above problems, a representative configuration of a magnet holder according to the present invention is a magnet holder in which an object to be attracted is attached to an adsorption base made of a magnetic material, and when the adsorption base side of the magnet holder is the rear side and the side opposite the adsorption base is the front side, it is characterized in that it is composed of a plurality of thin plate-shaped magnets and a plurality of thin plate-shaped yokes arranged alternately, and on the rear side, gaps are formed between some of the multiple yokes and the adsorption base, and on the front side, the end faces of all of the yokes and all of the magnets form the same plane.

[0008] In order to solve the above problems, a typical configuration of the magnet suction mechanism of the present invention comprises the magnet holder described above and a removal tool for removing the magnet holder from the suction base, and the removal tool is characterized in that it has a tool side yoke on the front side of the magnet holder that contacts all of the yokes and the end faces of all of the magnets. Effect of the Invention

[0009] According to the present invention, it is possible to provide a magnet holder and a magnet attraction mechanism that can obtain a high attraction force when the attraction body and the attracted object are attracted to each other, while making it easy to remove the attracted object from the attraction body. [Brief description of the drawings]

[0010] [Figure 1] 3A to 3C are diagrams illustrating the configuration of a magnet holder according to the present embodiment. [Diagram 2] FIG. 2 is an external perspective view of the magnetic attraction mechanism of the embodiment. [Diagram 3] 4A to 4C are diagrams illustrating the magnetic path of the magnet holder of the present embodiment which is an example. [Figure 4] 10A and 10B are diagrams illustrating a magnetic path of a magnet holder of a comparative example. [Diagram 5] 11A and 11B are diagrams illustrating the attractive forces of the magnet holder of the embodiment and the magnet holder of the comparative example. [Figure 6] 11A and 11B are diagrams illustrating the relationship between the attractive force of a magnet holder, its cancellation rate, and the gap height. [Figure 7] 1 is a diagram showing a state in which the suction mechanism of the present embodiment is used; [Figure 8] 11A and 11B are diagrams illustrating another example of the attachment / detachment tool. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific values ​​shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present invention are not shown.

[0012] FIG. 1 is a diagram for explaining the configuration of a magnet holder 110 of this embodiment. FIG. 1(a) is an external perspective view of the magnet holder 110 of this embodiment. FIG. 1(b) is a cross-sectional view taken along line AA of FIG. 1(a). FIG. 2 is an external perspective view of the magnet attraction mechanism of this embodiment. For ease of understanding, a tool side yoke 160 of a mounting / removal tool 150, which will be described later, is illustrated in FIGS. 1(a) and 1(b).

[0013] Below, the magnet holder 110 will be described, and a magnet attraction mechanism (hereinafter referred to as the attraction mechanism 100) having the magnet holder 110 as a component will also be described in detail. As shown in Fig. 2, the attraction mechanism 100 of this embodiment includes the magnet holder 110 and a mounting / removal tool 150. In this embodiment, a panel 104 (see Figs. 2 and 7) is exemplified as the object to be attracted, and the panel 104 is attached to the attraction base 102, but the present invention is not limited thereto.

[0014] The object to be attracted may be an item or device other than the panel 104, so long as it can be held by the magnet holder 110. The attraction base 102 is assumed to be, for example, a structure such as a wall, pillar, ceiling, partition, or frame of a building. If the wall or the like is not magnetic, a magnetic material such as an iron plate can be attached to serve as the attraction base.

[0015] The magnet holder 110 is a device for attaching a panel 104 (see FIG. 2) to an attraction base 102 made of a magnetic material. For ease of explanation, the side of the magnet holder 110 facing the attraction base 102 is referred to as a back side 110b, and the side opposite the attraction base 102 is referred to as a front side 110a.

[0016] 1(a) and (b), the magnet holder 110 includes a plurality of thin plate-like magnets 120, a plurality of thin plate-like yokes 130, a sleeve 142, and a bolt 144. The plurality of thin plate-like magnets 120a, 120b, 120c, and 120d and the plurality of thin plate-like yokes 130a, 130b, 130c, 130d, and 130e are arranged alternately.

[0017] In this embodiment, four magnets 120a, 120b, 120c, 120d and five yokes 130a, 130b, 130c, 130d, 130e are illustrated, but the number is merely an example and may be changed as desired. Hereinafter, when the four magnets 120a, 120b, 120c, 120d and the five yokes 130a, 130b, 130c, 130d, 130e are not particularly distinguished from each other, they will be referred to as a plurality of magnets 120 and a plurality of yokes 130.

[0018] Of the multiple yokes 130, the yoke 130a has an L-shaped cross section made up of a side portion 132 and a holding portion 134. The side portion 132 is a portion adjacent to the magnet 120a. The holding portion 134 is a portion that bends from an end edge of the side portion 132 and extends along the adsorption base 102. In this embodiment, a panel 104, which will be described later, is held by the holding portion 134 of the yoke 130a.

[0019] Among the multiple yokes 130, yokes 130a and 130e (yokes with magnets 120 arranged on only one side) arranged at both ends are provided with connecting parts 136a and 136e as shown in Fig. 1(a). Between these connecting parts 136a and 136e, a sleeve 142 having approximately the same width as the thickness from magnet 120a to magnet 120d shown in Fig. 1(b) is arranged. Then, the connecting part 136a of yoke 130a, the sleeve 142, and the connecting part 136e of yoke 130e are fastened together with bolts 144 to form magnet holder 110.

[0020] The attachment / detachment tool 150 is a tool for removing the magnet holder 110 from the attraction base 102. As shown in FIG.

[0021] The tool side yoke 160 has an abutment portion 162 and a pair of flanges 164. The abutment portion 162 is a portion that contacts the front surface 110a of the magnet holder 110, i.e., the end faces of all the magnets 120 and all the yokes 130. The pair of flanges 164 are portions that bend from the end edges of the abutment portion 162 and extend in a direction away from the handle 170 (see FIG. 2), and contact the outsides of the yokes 130a, 130e.

[0022] As shown in Fig. 2, a tool side yoke 160 (a total of two) is disposed on each end of the handle 170. However, the number of tool side yokes 160 relative to the handle 170 shown in Fig. 2 is merely an example, and the number may be changed as appropriate.

[0023] Fig. 3 is a diagram for explaining the magnetic path of the magnet holder 110 of the present embodiment, which is an example. Fig. 3(a) is a diagram illustrating the magnetic path of the magnet holder 110 of the example in a state where the magnet holder 110 is attached to the suction base 102 and the detachment tool 150 is not attached. Fig. 3(b) is a diagram for explaining the magnetic path of the magnet holder 110 of the example in a state where the detachment tool 150 is attached.

[0024] Fig. 4 is a diagram for explaining the magnetic path of the magnet holder 10 of the comparative example. Fig. 4(a) is a diagram illustrating the magnetic path of the magnet holder 10 of the comparative example in a state where the magnet holder 10 is attached to the suction base 102 and the detachment tool 150 is not attached. Fig. 4(b) is a diagram for explaining the magnetic path of the magnet holder 10 of the comparative example in a state where the detachment tool 150 is attached. Note that in the magnet holder 10 of the comparative example, components common to the magnet holder 110 (example) of this embodiment are denoted by the same reference numerals and description thereof will be omitted.

[0025] 4(a) and (b), the end faces of all the magnets 120 and all the yokes 30 are flush with each other on both the front surface 10a and the back surface 10b of the comparative example 10. When the comparative example 10 is attached to the attraction base 102 and the tool side yoke 160 is not attached, a strong magnetic flux M4 is generated on the back surface 10b of the magnet holder 10, i.e., on the attraction surface between all the magnets 120 and the attraction base 102, as shown in FIG.

[0026] Magnetic flux M4 is magnetic flux that flows from the magnet 120 through the adjacent yoke 30 on one side, the attraction base 102, and the adjacent yoke 30 on the other side, and returns to the magnet 120. This generates an attraction force between the magnet holder 10 and the attraction base 102. In addition, at the front surface 10a of the magnet holder 10, a weak magnetic flux M5 is generated that flows from the magnet 120 through the adjacent yoke 30 on one side, the air, and the adjacent yoke 30 on the other side, and returns to the magnet 120.

[0027] As shown in Figure 4 (b), when the tool side yoke 160 of the removal / installation tool 150 is attached to the magnet holder 10, the abutment portion 162 of the tool side yoke 160 abuts against the front surface 10a of the magnet holder 10, and the flange 164 of the tool side yoke 160 abuts against the yoke 30.

[0028] Then, a strong magnetic flux M6 is generated on the front surface 10a of the magnet holder 10, which flows from the magnet 120 through the adjacent yoke 30 on one side, the tool side yoke 160, and the adjacent yoke 30 on the other side and returns to the magnet. At this time, the conditions are the same on the front surface 10a and the rear surface 10b, so the magnetic fluxes M4 and M6 are approximately the same.

[0029] Next, an example will be described. In the embodiment 110 shown in Figures 3(a) and (b), the end faces of all the yokes 130 and all the magnets 120 are flush with each other on the front surface 110a. On the other hand, on the back surface 110b of the magnet holder 110, gaps G1 and G2 are formed between the yokes 130b and 130d, which are some of the multiple yokes 130, and the adsorption base 102, respectively.

[0030] In the embodiment of the magnet holder 110, when it is attracted to the adsorption base 102 and the removal tool 150 is not attached, a large magnetic flux M1 is generated on the back surface 110b of the magnet holder 110, i.e., on the adsorption surface between all of the magnets 120 and the adsorption base 102, as shown in Figure 3(a).

[0031] The magnetic flux M1 is a magnetic flux that passes from the magnet 120 through the adjacent yoke 130 on one side, the attraction base 102, the gap G1 or G2, and the adjacent yoke 130 on the other side, and returns to the magnet 120. Because this magnetic flux M1 passes through the gap G1 or G2, it is slightly weaker than the magnetic flux M4 on the back surface 10b of the magnet holder 10 where no gap is provided, but this is not to the extent that it causes any problems. Also, at the front surface 110a of the magnet holder 110, a weak magnetic flux M2 is generated that passes from the magnet 120 through the adjacent yoke 130 on one side, the air, and the adjacent yoke 130 on the other side, and returns to the magnet 120.

[0032] As shown in FIG. 3(b), when the tool side yoke 160 of the removal / installation tool 150 is attached to the magnet holder 110, the abutment portion 162 of the tool side yoke 160 abuts against the front surface 110a of the magnet holder 110, and the flange 164 of the tool side yoke 160 abuts against the yoke 130.

[0033] Then, a strong magnetic flux M3 is generated on the front surface 110a of the magnet holder 110, passing from the magnet 120 through the adjacent yoke 130 on one side, the tool side yoke 160, and the adjacent yoke 130 on the other side, and returning to the magnet 120. Then, the magnetic flux M1 generated on the back surface 110b of the magnet holder 110 becomes weaker.

[0034] At this time, because there are gaps G1 and G2 on the rear surface 110b, the magnetic flux passes more easily on the front surface 110a side. Therefore, the magnetic flux M3 on the front surface side is much stronger than the magnetic flux M1 on the rear surface side. Therefore, a large attractive force is generated between the magnet holder 110 and the tool side yoke 160, and the attractive force between the magnet holder 110 and the attraction base 102 is greatly reduced.

[0035] Fig. 5 is a diagram illustrating the attractive forces of magnet holder 110 of the embodiment and magnet holder 10 of the comparative example. In the embodiment of Fig. 5, the heights G1 and G2 of magnet holder 110 are set to 0.4 mm.

[0036] In the magnet holder 10 of the comparative example, the attractive force (magnetic flux M4) between the magnet holder 10 and the attraction base 102 shown in Fig. 4(a) was 260 N, and the removal force between the magnet holder 10 and the attraction base 102 shown in Fig. 4(b), in other words, the attractive force (magnetic flux M4) when the attachment / detachment tool 150 of the tool side yoke 160 was attached to the magnet holder 10, was 207 N. Therefore, the cancellation rate, which is the percentage of the attractive force reduced by attaching the attachment / detachment tool 150 to the magnet holder 10 of the comparative example, is 20%.

[0037] In the magnet holder 110 of the embodiment, the attraction force (magnetic flux M1) between the magnet holder 110 and the attraction base 102 shown in Fig. 3(a) was 176 N, and the removal force between the magnet holder 110 and the attraction base 102 shown in Fig. 3(b) (the attraction force (magnetic flux M1) when the attachment / detachment tool 150 of the tool side yoke 160 is attached to the magnet holder 10) was 124 N. From this, the cancellation rate when the attachment / detachment tool 150 is attached to the magnet holder 110 of the embodiment is 30%.

[0038] As described above, according to the magnet holder 110 of this embodiment, by forming gaps G1 and G2 in the yoke 130, the removal force required to remove the magnet holder 110 and the suction base 102 can be significantly reduced compared to the magnet holder 10 of the comparative example in which gaps G1 and G2 are not formed.

[0039] Even when the gaps G1 and G2 are formed, the attraction force between the magnet holder 10 and the attraction base 102 is satisfactorily ensured. Therefore, according to the attraction mechanism 100 of this embodiment, it is possible to obtain a high attraction force when the attraction base 102 and the magnet holder 110 and therefore the panel 104 are attracted to each other, while facilitating the removal of the magnet holder 110 and therefore the panel 104 from the attraction base 102.

[0040] Fig. 6 is a diagram illustrating the relationship between the attractive force of the magnet holder, its cancellation rate, and the height of the gaps G1 and G2. In Fig. 6, the plots for a gap of 0 mm are the comparative example (magnet holder 10), and the plots for gaps of 0.1 mm to 0.4 mm are the examples (magnet holder 110 of this embodiment).

[0041] 6, the attraction force of magnet holder 110 is greatest when the gap is 0 mm (comparative example) and decreases as the gap height increases. Similarly, the removal force of magnet holder 110 is greatest when the gap is 0 mm (comparative example) and decreases as the gap height increases.

[0042] Furthermore, the cancellation rate of the attractive force of magnet holder 110 is lowest when the gap is 0 mm (comparative example) and increases as the gap height increases. From these facts, it can be seen that the desired attractive force and removal force can be obtained by adjusting the gap height, for example, by setting the gap height low when the attractive force between magnet holder 110 and attraction base 102 is to be prioritized, and by setting the gap height high when it is desired to easily remove magnet holder 110 from attraction base 102.

[0043] 7 is a diagram showing how the suction mechanism 100 of this embodiment is used. Fig. 7(a) shows a state in which the panel 104 has been previously attracted to the suction base 102 by the magnet holder 110. When the panel 104 is to be detached using the attachment / detachment tool 150, first, as shown in Fig. 7(a), the tool side yoke 160 of the handle 170 is aligned with the magnet holder 110 holding the panel 104.

[0044] Next, as shown in Fig. 7(b), the handle 170 is moved to bring the tool side yoke 160 into contact with the magnet holder 110. Then, as shown in Fig. 7(c), the handle 170 is moved in a direction away from the suction base 102, whereby the magnet holder 110 that was attached to the suction base 102 is attached to the tool side yoke 160, and the magnet holder 110 and therefore the panel 104 are easily and simply removed from the suction base 102.

[0045] Fig. 8 is a diagram for explaining another example of the attachment / detachment tool. This is an example in which one handle 170a is provided for each magnet holder 110. Among the components of the attachment / detachment tool 150a shown in Fig. 8, those that are common to the components shown in Fig. 1 and Fig. 2 are given the same reference numerals and description thereof will be omitted.

[0046] In the removal / attachment tool 150 shown in Fig. 2, the handle 170 is bar-shaped with curved ends, and the tool side yoke 160 is disposed at each end of the bar. In contrast, in the removal / attachment tool 150a shown in Fig. 8, the handle 170a is T-shaped, and the tool side yoke 160 is connected to a vertical part 172a of the T by a connecting shaft 174a. Even with this configuration, it is possible to obtain the same effect as the removal / attachment tool 150 shown in Fig. 2.

[0047] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an example. It is clear that a person skilled in the art can think of various modified or altered examples within the scope of the claims, and it is understood that such examples also naturally belong to the technical scope of the present invention. [Industrial Applicability]

[0048] The present invention can be utilized as a magnet holder for mounting an object to be attracted to an attraction base made of a magnetic material, and as a magnet attraction mechanism using the same. [Explanation of symbols]

[0049] G1...gap, G2...gap, 10...magnet holder, 10a...front, 10b...rear, 30...yoke, 100...adsorption mechanism, 102...adsorption base, 104...panel, 110...magnet holder, 110a...front, 110b...rear, 120...magnet, 120a...magnet, 120b...magnet, 120c...magnet, 120d...magnet, 130...yoke, 130a...yoke, 130b...yoke yoke, 130c...yoke, 130d...yoke, 130e...yoke, 132...side portion, 134...holding portion, 136a...connecting portion, 136e...connecting portion, 142...sleeve, 144...bolt, 150...removal tool, 150a...removal tool, 160...tool side yoke, 162...contact portion, 164...flange, 170...handle, 170a...handle, 172a...vertical portion, 174a...connecting shaft

Claims

1. A magnet holder for attaching an object to be attracted to an attraction base made of a magnetic material, When the adsorption base side of the magnet holder is defined as a back side and the side opposite to the adsorption base is defined as a front side, A plurality of thin plate-shaped magnets and a plurality of thin plate-shaped yokes are arranged alternately, On the rear side, a gap is formed between some of the plurality of yokes and the suction base, A magnet holder characterized in that, on the front side, end faces of all of the yokes and all of the magnets form the same plane.

2. The magnet holder according to claim 1 ; a detachment tool for detaching the magnet holder from the suction base, A magnet attraction mechanism characterized in that the attachment / detachment tool has a tool side yoke that contacts all of the yokes and end faces of all of the magnets on the front side of the magnet holder.

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