JP2019003979A - magnet - Google Patents

Abstract

To provide a magnet capable of improving working efficiency.SOLUTION: A magnet 100 includes a magnet body 110, a magnet cover 130 that holds the magnet body 110 in a state where a suction surface 111 of the magnet body 110 is exposed and has a connecting tool 120 that can performs connection of an object to be connected, and an arm member 140 having one end portion 141a attached to the magnet cover 130, and the other end portion 141b of the arm member 140 protrudes to the outside of an outer peripheral portion of the suction surface 111.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a magnet.

  Traditionally, divers work on the bottom of a ship, pier piers, etc. when welding or cutting in the sea in a floating state, either by constantly swimming or by fixing the body with a rope. Yes.

  However, there are cases where the rope cannot be used, and there is a problem that the body cannot be fixed and is forced to work in an unstable state, resulting in poor work efficiency.

  An object of the present invention is to provide a magnet capable of improving working efficiency in view of the above-described conventional problems.

The first aspect of the present invention is
A magnet body;
A magnet cover member for covering the magnet body;
A connector capable of being connected to an object to be connected;
A rod-like member having one end attached to the magnet cover member,
The other end portion of the rod-shaped member protrudes outside the outer peripheral portion of the magnet body,
The connector is a magnet provided on the magnet cover member or the rod-shaped member.

The second aspect of the present invention
The magnet according to the first aspect of the present invention, comprising a sheet-like member that can be attached to the attraction surface.

The third aspect of the present invention
As for the sheet-like member, a plurality of types having different thicknesses are prepared in advance,
The magnet according to the second aspect of the present invention, wherein the degree of the attractive force of the magnet body can be adjusted by selecting any one of the sheet-like members from the plurality of types.

The fourth aspect of the present invention is
A magnet body;
A rod-like member having one end attached to the upper surface of the magnet body;
A connector arranged at the one end of the rod-shaped member and capable of connecting objects to be connected;
The other end portion of the rod-shaped member projects to the outside of the outer peripheral portion of the magnet body.

  According to the present invention, it is possible to provide a magnet capable of improving work efficiency.

1 is a schematic perspective view of a magnet according to an embodiment of the present invention. Schematic side view showing a state in which the magnet of the present embodiment is attracted to the ship bottom (A): Bottom view of a magnet showing a state in which a rubber sheet-like member is bonded so as to cover the attracting surface of the magnet of the present embodiment and the end surface of the magnet cover surrounding the magnet. ): Side view of the magnet shown in FIG. (A): Plan view of the state where the bag-like member is covered on the magnet's attracting surface as seen from above, (b): Cut end view along line CC ′ shown in FIG. 4 (a), (c): Side view including a partial end face in a state where the bag-like member is put on the magnet's adsorption surface (A): Side view showing a second magnet as another example of the present embodiment, (b): Side view showing a third magnet as still another example of the present embodiment, (c): Book The side view which shows the 4th magnet as further another example of embodiment. (A): Schematic perspective view of a fifth magnet of another embodiment of the magnet of the present invention, (b): exploded perspective view of the fifth magnet shown in FIG. 6 (a) (A): Bottom view of the state in which the second magnet cover is fixed to the fifth magnet body with an adhesive or the like viewed from the attracting surface side, (b): FIG. 7 in the fifth magnet body with the second magnet cover. Cut end view along line DD ′ shown in (a) Side view of the seventh magnet

  Hereinafter, an embodiment of a magnet of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic perspective view of a magnet 100 according to an embodiment of the present invention.

  FIG. 2 is a schematic side view showing a state in which the magnet 100 of the present embodiment is attracted to the ship bottom 1.

  As shown in FIGS. 1 and 2, the magnet 100 according to the present embodiment has (1) a substantially disk shape or a substantially cylindrical shape, and an object to be adsorbed (for example, a load of about 160 kg at maximum) is suspended. In this embodiment, the magnet main body 110 that can be attracted to the ship bottom 1), (2) the magnet main body 110 is covered, and, for example, the body of a diver (not shown) is connected via the rope member 2 Alternatively, a ring-shaped connector 120 that can suspend a bucket (not shown) containing materials and tools necessary for welding work to the ship bottom 1 via a rope member 2 and a wire (not shown) is provided in the center. A substantially bon-shaped magnet cover 130 that is fixed; and (3) a rod-shaped arm member having one end portion 141a fixed to the end portion of the magnet cover 130, and the other end portion 141b of the rod-shaped arm member is flat. Visual From the outer peripheral portion of the suction surface 111 of the magnet body 110 and the arm member 140 which protrudes outward, and a.

  As the arm member 140 moves from the one end portion 141a to the other end portion 141b, the arm member 140 gradually and linearly increases from a reference surface (the surface of the ship bottom 1 shown in FIG. 2 corresponds to the reference surface) including the suction surface 111 in a side view. It is inclined to move away.

  The magnet body 110 is fixed to the inner surface of the magnet cover 130 with an adhesive.

  In addition, the magnet 100 of the present embodiment has an outer shape that completely covers the attracting surface 111 of the magnet 100 and the end surface 130a of the magnet cover 130 as shown in FIGS. 3 (a) and 3 (b). A circular rubber sheet-like member 150 is bonded in advance.

  FIG. 3A is a bottom view of the magnet 100 showing a state in which the rubber sheet-like member 150 is bonded so as to cover the attracting surface 111 of the magnet 100 and the end surface 130a of the magnet cover 130 surrounding the periphery. FIG. 3B is a side view of the magnet 100 shown in FIG.

  In this way, by attaching the rubber sheet-like member 150 and completely covering the attracting surface 111 of the magnet 100 and the end face 130a of the magnet cover 130, the surface of the sheet-like member 150 is coated with iron rust or the like. Even when iron residue remaining due to welding work is adsorbed, it can be easily removed by wiping with a piece of cloth or gloves, compared to when adsorbing directly on the adsorption surface 111.

  As a result, the magnet 100 can be easily prevented from adsorbing to the object to be adsorbed with iron rust or the like adsorbed, so that the painted surface of the object to be adsorbed or the anticorrosion film is damaged, or the magnet 100 is adsorbed by the interposition of iron rust or the like. It is possible to prevent the force from decreasing.

  Under such a configuration, a case in which a diver performs a welding operation on the ship bottom 1, for example, in the sea using the magnet 100 of the present embodiment will be described with reference to FIG.

  That is, the diver connects the end 2a (see FIG. 2) of the rope member 2 wound around his / her body in advance to the connecting tool 120 of the magnet 100, and reaches a predetermined place on the bottom 1 of the ship 1 where the welding operation is performed. After the movement, the attracting surface 111 of the magnet 100 to which the sheet-like member 150 is attached is attracted to the ship bottom 1.

  It is also possible to suspend a bucket (not shown) containing materials and tools necessary for welding work on the connector 120.

  In this way, the magnet 100 is attracted to the ship bottom 1 and the diver's body is connected to the coupling tool 120 of the magnet 100 by the lobe member 2, so that the diver's body that is floating in the sea becomes the rope member 2. Since it is fixed by, the welding work can be performed in a stable state, the finishing of the welding is improved, and the diver's fatigue is also reduced.

  Furthermore, when the magnet 100 is removed from the ship bottom 1 when the welding operation is completed or when the welding place is moved, the diver grasps the other end portion 141b of the arm member 140 with one hand, and covers the magnet cover. The other end portion in the direction of arrow A (see FIG. 2) with the first edge portion 131 (see FIG. 2 and FIG. 3 (a)) adjacent to the farthest position from the other end portion 141b among the end faces 130a of 130 as a fulcrum. By moving 141b, the magnet 100 having a strong magnetic force can be quickly removed from the ship bottom 1 with a light force by the lever principle.

  The first edge portion 131 is not limited to the fulcrum. For example, the second edge portion 132 adjacent to the position closest to the other end portion 141b of the end surface 130a of the magnet cover 130 (FIGS. 2 and 3A). )) As a fulcrum, the other end 141b may be moved in the direction of arrow B (see FIG. 2). Even in this case, the magnet 100 having a strong magnetic force can be quickly removed from the ship bottom 1 with a light force by the lever principle.

  As described above, according to the magnet 100 of the present embodiment, the work efficiency of divers in the sea is significantly improved.

  In addition, the magnet main body 110 of this Embodiment corresponds to an example of the magnet main body of this invention, and the connection tool 120 of this Embodiment corresponds to an example of the connection tool of this invention. The magnet cover 130 of the present embodiment is an example of the magnet cover member of the present invention, and the arm member 140 of the present embodiment is an example of the rod-shaped member of the present invention. Further, the sheet-like member 150 of the present embodiment corresponds to an example of the sheet-like member of the present invention.

  In the above-described embodiment, the case where the sheet-like member 150 is bonded in advance to the attracting surface 111 of the magnet 100 has been described. However, the present invention is not limited thereto. For example, the sheet-like member is prepared as a separate member. It is good also as a structure which an operator affixes later as needed. In the case of the configuration, for example, an adhesive member for adhesion is applied to the adhesive surface of the sheet-like member, and a release sheet is attached to the surface of the adhesive member, and the sheet-like member is attached to the suction surface 111. It is good also as a structure which removes the peeling sheet when bonding.

  Moreover, although the case where the sheet-like member 150 is one sheet was demonstrated in the said embodiment, it is not restricted to this, For example, the structure by which the sheet-like member from which thickness differs is prepared may be sufficient. In the case of this configuration, a member having a desired thickness is selected from a plurality of sheet-like members and adhered to the attracting surface 111 of the magnet 100, thereby removing iron rust and the like adhering to the sheet-like member as described above. In addition to the effect that can be easily performed, the effect that the degree of weakening the attractive force of the magnet 100 can be adjusted according to the thickness of the sheet-like member is also exhibited. In addition, when readjusting the suction force, the sheet-like member having a predetermined thickness that is already bonded to the suction surface 111 may be replaced with a sheet-like member having a different thickness.

  Further, in the above configuration example, when the adsorption force is readjusted, the configuration in which the sheet-like member having a predetermined thickness already bonded to the adsorption surface 111 is replaced with another sheet-like member has been described. For example, a plurality of magnets to which sheet-like members having different thicknesses are bonded may be prepared. Accordingly, it is not necessary to readjust the attractive force, and a magnet corresponding to a desired attractive force may be selected from a plurality of magnets to which sheet-like members having different thicknesses are bonded.

  In the above configuration example, the case where a plurality of sheet-like members having different thicknesses are prepared has been described. However, the present invention is not limited to this. For example, a plurality of sheet-like members having the same thickness may be prepared. In the case of this configuration, the degree of weakening the attractive force of the magnet 100 can be adjusted by adjusting the number of sheet-like members adhered to the attractive surface 111 of the magnet 100.

  Moreover, although the case where the sheet-like member 150 described above is made of rubber has been described, it is not limited to rubber.

  In the above configuration example, the case where the sheet-like member 150 is bonded to the attracting surface 111 of the magnet 100 has been described. However, the present invention is not limited to this, for example, as shown in FIGS. 4 (a) to 4 (c). Instead of the member 150, the bag member 160 may be configured to cover the attracting surface 111 of the magnet 100. 4A is a plan view of the state in which the bag-like member 160 is covered with the attracting surface 111 of the magnet 100 as viewed from above, and FIG. 4B is a CC ′ line in FIG. FIG. 4C is a cut end view, and FIG. 4C is a side view including a partial end face in a state where the bag-like member 160 is placed on the attracting face 111 of the magnet 100. 4A and 4B, the arm member 140 is not shown. The same members as those described in FIGS. 1 to 3B are denoted by the same reference numerals.

  The bag-like member 160 shown in FIGS. 4A to 4C is made of rubber and has a bag shape with one side opened. The size of the opened opening 161 is smaller than the diameter of the magnet cover 130. Therefore, when the bag-shaped member 160 is put on the attracting surface 111 of the magnet 100, the magnet cover 130 is placed inside the bag-shaped member 160 so as to cover the attracting surface 111 while expanding the opening 161 using the elasticity of rubber. insert. Since the opening 161 returns to its original size due to the restoring force of the rubber, the bag-like member 160 covered with the magnet 100 does not come off naturally.

  As a result, even when iron rust or residual iron residue generated by welding work is adsorbed on the surface of the bag-like member 160, it is wiped with a piece of cloth or gloves, etc., as compared with the case where it is adsorbed directly to the adsorption surface 111. Simply remove it. Therefore, it is possible to easily prevent the magnet 100 from being adsorbed to the object to be adsorbed in a state where iron rust or the like is adsorbed, so that the surface of the object to be adsorbed is damaged or the adsorbing force is reduced due to the interposition of iron rust or the like. Can be prevented.

  When the bag-shaped member 160 is configured to cover the attracting surface 111 of the magnet 100, the bag-shaped member 160 includes one or more second sheet-shaped members 170 between the attracting surface 111 and the inner surface 160 a of the bag-shaped member 160. The structure which can be inserted between may be sufficient. In this case, the plurality of second sheet-like members 170 all have the same thickness, and need not be adhered to the suction surface 111 unlike the sheet-like member 150 described above. As a result, by adjusting the number of second sheet-like members inserted between the attracting surface 111 and the inner surface 160a of the bag-like member 160, it is possible to adjust the degree of weakening the attracting force of the magnet 100. Demonstrate.

  Further, instead of the second sheet-like member 170 having the same thickness, a plurality of third sheet-like members (not shown) having different thicknesses may be prepared in advance. Thereby, the effect that the degree of weakening the attractive force of the magnet 100 can be adjusted according to the thickness of the third sheet-like member inserted between the attractive surface 111 and the inner surface 160a of the bag-like member 160 is exhibited. .

  In the above embodiment, the case where the magnet 100 is attracted to the ship bottom 1 as an example of an object to be attracted is described. However, the present invention is not limited thereto, and for example, the magnet 100 is attracted to a cut steel pipe pile, a sheet pile, a pier pier, or the like. The same effect is exhibited when performing welding work, cutting work, corrosion prevention work, and the like.

  Moreover, in the said embodiment, the arm member 140 is a reference plane containing the adsorption surface 111 in a side view as it goes from the one end 141a to the other end 141b (the surface of the ship bottom 1 shown in FIG. 2 corresponds to the reference plane). However, the present invention is not limited to this. For example, as shown in FIG. 5A, the second arm member 240 of the second magnet 200 is connected to the other end from the one end 241a. To the part 241b, it extends parallel to a reference plane (the surface of the ship bottom 1 shown in FIG. 5A corresponds to the reference plane) including the suction surface 111 in a side view, and in front of the other end 241b, Only a portion 241c may be curved in a direction away from the reference plane so that it can be easily held by hand.

  Moreover, although the case where one arm member 140 was provided was demonstrated in the said embodiment, it is not restricted to this, For example, as shown in FIG.5 (b), a pair of 3rd arm members 340L and 340R are included. The third magnet 300 provided may be used.

  In the above embodiment, the case where the arm member 140 is fixed to the magnet cover 130 has been described. However, the present invention is not limited to this. For example, as shown in FIG. The 4th magnet 400 provided with the 4 arm member 440 may be sufficient. In the case of this configuration, the root portion 441 of the fourth arm member 440 is rotatably supported by the rotation support portion 135 fixed to the side surface of the magnet cover 130, and supports the fourth arm member 440. The fourth arm member 440 is positioned at the storage position and is compactly folded by rotating clockwise around the portion 135 as the center of rotation in the side view shown in FIG. Further, the fourth arm member 440 is positioned at the operation position by rotating the fourth arm member 440 counterclockwise in the side view shown in FIG. 5C with the rotation support portion 135 as the rotation center. . In FIG. 5A to FIG. 5C, the same reference numerals are given to the same members as the constituent members described above.

  Moreover, although the said embodiment demonstrated the case where the magnet 100 was used in the sea and the body of a diver was stably hold | maintained, not only this but the magnet 100 may be used in water, Or you may use on land. Even in this case, since the operator can hold the body by adsorbing the magnet to the object to be adsorbed as described above, the work can be performed in a stable state, the work quality is improved, and the magnet with a strong magnetic force is lightened. It can be removed quickly with force, improving work efficiency.

  Moreover, although the said embodiment demonstrated the case where an operator's body was connected with the connection tool 120 of the magnet 100 with the rope member 2, it is not restricted to this, For example, the connection target object connected with the connection tool 120 is an operator. It is not limited to the body. For example, it may be a case where a heavy object necessary for work is suspended from the connector 120 for work. Even in such a case, when changing the magnet's adsorption position or removing the magnet when the work is finished, the arm member is operated and the principle of the lever is used, so a magnet with strong magnetic force Can be removed quickly with light force, improving work efficiency.

  Moreover, although the said embodiment demonstrated the case where the magnet 100 was used in the sea and the body of a diver was stably hold | maintained, it is not restricted to this, For example, it is in the sea, underwater, and the land Regardless, when temporarily fixing a formwork, steel, or the like to a metal substrate, the magnet of the present invention (for example, the magnet 100 described above) may be temporarily fixed. That is, conventionally, when fixing a steel material or the like to a metal base material, the steel material or the like is fixed after being temporarily welded to the base material. However, as an example, the magnet 100 (second magnet 200) described above is used. , The third magnet 300, the fourth magnet 400, the fifth magnet 500, the sixth magnet, or the seventh magnet 700 may be used, and the base material, the steel material, and the magnet 100 may be arranged in this order, and the steel material may have a strong magnetic force. After full-scale fixing is completed by adsorbing to the base material, and the arm member 140 of the magnet 100 is operated with one hand, the magnet 100 having a strong magnetic force can be lightened by the lever principle. It can be removed quickly with force, improving work efficiency. Moreover, when using the magnet of this invention for temporary fixation in this way, it does not ask | require whether a base material exists in the upper part, a side, or a lower part on the basis of an operator's position.

  Moreover, although the said embodiment demonstrated the case where the magnet 100 was used in the sea and the body of a diver was stably hold | maintained, it is not restricted to this, For example, it is in the sea, underwater, and the land Regardless, for example, when constructing a structure, in the operation of tensioning a thread that becomes a reference line, the magnets of the present invention (for example, the magnet 100 described above) are respectively applied to the points A and B on the metal substrate. You may make it adsorb | suck and stretch | stretch a thread | yarn between those magnets. That is, with respect to the points A and B on the metal substrate, as an example, the above-described magnet 100 (second magnet 200, third magnet 300, fourth magnet 400, fifth magnet 500, sixth magnet, or The seventh magnet 700 (which may be the seventh magnet 700) is firmly fixed by adsorbing it with a strong magnetic force, and then the thread is tied to the coupling tool 120 of the two magnets 100, whereby the work of tensioning the thread as the reference line can be easily performed. At the same time, when the magnet 100 is removed after the predetermined work is completed, the arm member 140 of the magnet 100 is operated with one hand, and the strong magnetic magnet 100 can be quickly and lightly operated by the lever principle. It can be removed, improving work efficiency.

  Moreover, in the said embodiment, although the structure (refer FIG. 1) which fixed the one end part 141a of the arm member 140 to the magnet cover 130 was demonstrated, it is not restricted to this, For example, Fig.6 (a), FIG.6 (b) As shown in the figure, the fifth magnet 500 may be configured such that the fifth arm member 540 is directly fixed to the fifth magnet body 510. 6A is a schematic perspective view of a fifth magnet 500 according to another embodiment of the magnet of the present invention, and FIG. 6B is an exploded perspective view of the fifth magnet 500 shown in FIG. 6A. FIG. That is, as shown in FIGS. 6 (a) and 6 (b), the fifth magnet 500 has (1) a substantially disk shape or a substantially columnar shape, with a maximum load of about 160 kg suspended. A fifth magnet main body 510 having a first through hole 511 formed in the central portion, which can be adsorbed to an object to be adsorbed, and (2) formed at the central portion of one end 541a formed into a substantially rectangular flat plate shape. Using the second through-hole 542 and a connecting member with a nut 520 that also serves as a fixing bolt 530 and a fixing nut, which will be described later, one end 541a is a rod-like member fixed to the upper surface 512 of the fifth magnet body 510. The other end portion 541b, which is an arm member and the rod-shaped arm member has a circular cross section and has a circular shape, projects outward from the outer peripheral portion of the attracting surface 513 of the fifth magnet body 510 in plan view. Arm member 540, ( ) In order to fix the one end 541a of the fifth arm member 540 to the upper surface 512 of the fifth magnet body 510, the adsorption of the fifth magnet body 510 so as to penetrate the first through hole 511 and the second through hole 542. The head 531 inserted from the surface 513 side can connect the fixing bolt 530 having a dish-like shape and (4) the rope member 2 (see FIG. 2), a wire, a thread, or a carabiner (not shown). It is a ring-shaped connector, and is engaged with the first end portion 541a of the fifth arm member 540 by screwing it into the front end portion 532 of the fixing bolt 530 inserted into the first through hole 511 and the second through hole 542. And a nut-equipped coupler 520 that also functions as a fixing nut for firmly fixing to the upper surface 512 of the magnet body 510. Accordingly, the fifth arm member 540 can be firmly fixed with a simple configuration.

  The outer peripheral edge of the first through hole 511 provided at the center of the attracting surface 513 of the fifth magnet body 510 is inclined in a funnel shape in accordance with the dish shape of the head 531 of the fixing bolt 530. The head 531 is formed so as not to jump out of the suction surface 513 when the fixing bolt 530 is attached.

  Also, in the fifth magnet 500, the sheet-like member 150 described above may be bonded in advance to the attracting surface 513, or as described above, a single member or a plurality of members having the same thickness are prepared as separate members. It may be adhered to the suction surface 513 as necessary, or a plurality of different thicknesses may be prepared and adhered to the suction surface 513 as necessary. Further, these sheet-like members prepared as separate members are attached to the suction surface 513 by being inserted between the inner surface 160a (see FIG. 4B) of the bag-like member 160 and the suction surface 513. It is also good. As a result, the same effects as described above can be exhibited with respect to the removal of iron rust and the like adhering to the sheet-like member 150 and the adjustment of the magnetic force of the magnet.

  In addition, the fifth arm member 540 has one end 541a formed in a flat plate shape and bent in a substantially U shape in a side view, and the other end 541b is easily gripped by a hand. Although the case where the cross section is a hollow rod-shaped member having a circular shape has been described, the present invention is not limited to this. For example, both the one end and the other end are flat, and the one end is bent into a substantially square shape in a side view. It may be a bar-shaped member.

  The fifth magnet 500 is not provided with a magnet cover, and the fifth arm member 540 (see FIGS. 6A and 6B) is connected to the fixing bolt 530 and the nut-equipped coupler 520. However, the present invention is not limited to this. For example, in the fifth magnet 500 (see FIGS. 6A and 6B), the fifth magnet main body 510 is fixed to the fifth magnet main body 510. The second magnet cover 630 shown in FIGS. 7A and 7B may be replaced with a sixth magnet (not shown) that is replaced with a fifth magnet body 510 fixed with an adhesive or the like. FIG. 7A is a bottom view of the state in which the second magnet cover 630 is fixed to the fifth magnet body 510 with an adhesive or the like as viewed from the suction surface 513 side, and FIG. 7B is the second magnet. FIG. 8 is a cut end view taken along line DD ′ shown in FIG. 7A in the fifth magnet body 510 with a cover 630. Members that are basically the same as those described in FIGS. 6A and 6B are denoted by the same reference numerals.

  As shown in FIGS. 7A and 7B, the fifth magnet body 510 to which the second magnet cover 630 is fixed with an adhesive or the like has an adsorption surface of the first through hole 511 formed in the center portion. As described above, a funnel-shaped inclined surface 511 a is formed on the outer peripheral edge portion on the 513 side in accordance with the dish shape of the head portion 531 of the fixing bolt 530. The second magnet cover 630 is a circular basin-shaped metal cap having a recess having an inner diameter larger than the outer diameter of the fifth magnet main body 510, and the first through hole 511 of the fifth magnet main body 510 is formed at the center. A third through hole 631 having the same diameter as that of the first through hole 631 is formed. The second magnet cover 630 has a fifth magnet body 510 positioned at the center of the bottom surface 632 by fixing with an adhesive or the like. The first through hole 511, the third through hole 631, and the second through hole One end portion 541a of the fifth arm member 540, the second magnet cover 630, and the fifth magnet are formed by screwing the connecting member 520 with a nut into the tip portion 532 of the fixing bolt 530 inserted in the hole 542. The main body 510 is firmly fixed. In addition to the effect that positioning can be performed by fixing the fifth magnet body 510 to the second magnet cover 630 with an adhesive or the like, the fifth magnet body 510 can be more securely compared to fixing with only a fastening member such as the fixing bolt 530. The fifth magnet main body 510 may be fixed to the second magnet cover 630 with an adhesive or the like. As is clear from the above, the sixth magnet is basically the same as that described for the fifth magnet 500 (see FIG. 6A and FIG. 6B). The fifth magnet body 510 of the magnet 500 is simply replaced with the fifth magnet body 510 with the second magnet cover 630. As a result, the same effect as that of the fifth magnet 500 is exhibited, and by attaching the metal second magnet cover 630, the attraction force is strengthened compared to the attraction force of the fifth magnet 500 not attached thereto. It also demonstrates the effect.

  In the above-described embodiment, the case where various magnets (for example, the magnet 100 and the fifth magnet 500) have an attractive force that can withstand a load of about 160 kg at the maximum has been described. Power is not limited to this.

  In the above embodiment, the other end of the arm member is straight (see FIGS. 2, 5B, and 5C), or a part of the front side of the other end of the arm member. Although the description has been given of the case where the arm member is curved so that it can be easily held by hand (for example, the arm member is not limited to this, for example, the arm member has a side surface as it goes from one end to the other end). As seen from the reference surface including the attracting surface of the magnet body (for example, the surface of the ship bottom 1 shown in FIG. 2 corresponds to the reference surface) is inclined so as to gradually move away from the other end. It is good also as a curved structure in the direction which leaves | separates from the said reference plane largely as it goes to an edge part. With this configuration, the other end portion rises greatly curved from the reference surface, and therefore the other end portion interferes with the protruding portion even if there is a protruding portion on the surface of the object to be adsorbed. Can be prevented. Thereby, the freedom degree of the external shape of the to-be-adsorbed object which a magnet can adsorb | suck improves.

  Moreover, in the said embodiment, the corner | angular part 513a (refer FIG. 7 (a), FIG.7 (b)) of the outer periphery of the attraction | suction surface 513 of the 5th magnet main body 510 has comprised circular shape over the perimeter, for example. However, the present invention is not limited to this. For example, as shown by a two-dot chain line in FIGS. 7A and 7B, the inner corner 513 a of the outer periphery of the attracting surface 513 of the fifth magnet body 510 7B may have a configuration in which a region 513b having a triangular shape in the cross section of the right corner in FIG. 7B is cut off. In the case of this configuration, one end 541a (indicated by a two-dot chain line in FIG. 7B) of the fifth arm member 540 is fixed to the upper surface of the second magnet cover 630, and the other end 541b (FIG. 7). (B) is indicated by a two-dot chain line in a region 513b (FIGS. 7A and 7B) in which a part of the corner portion 513a of the suction surface 513 is cut obliquely. ) From the side of FIG. 7B further extends obliquely upward on the right side. By providing the region 513b cut obliquely in this way, the outer peripheral end of the fifth magnet main body 510 is not completely cut in the thickness direction, so that the fifth arm member is suppressed while suppressing a decrease in the attractive force. The effect that the force required when moving the 540 in the direction of arrow A (see FIG. 7B) to remove the fifth magnet body 510 from the object to be attracted (not shown) can be reduced. In addition, by providing the region 513b cut obliquely in this way, even when the length of the fifth arm member 540 to the other end 541b side is shortened, the fifth magnet body 510 is removed from the object to be attracted. Therefore, the magnet itself can be made compact as much as the protrusion of the other end 541b of the fifth arm member 540 can be shortened. Further, if the fifth arm member 540 is moved in the direction of arrow B (see FIG. 7B) and the fifth magnet body 510 may be removed from the object to be attracted (not shown), it is cut obliquely. The region 513b thus formed may be provided on the left corner in FIG. 7B, that is, on the distal end side of the one end 541a of the fifth arm member 540, or may be provided on both. The cut region 513b may be cut off by post-processing after the disk-shaped or columnar fifth magnet body 510 is formed, or the cut region 513b is reflected in advance as a corner shape. You may do it. 7A and 7B show the case where the outer peripheral corner portion 513a of the attracting surface 513 of the fifth magnet body 510 has a circular shape over the entire circumference, and has been described above. Another configuration example having the region 513b cut obliquely is also shown using a two-dot chain line.

  In the above embodiment, the sheet-like member 150, the bag-like member 160, and the second sheet-like member 170 are used to adjust the attracting force of the magnet 100 to the object to be attracted according to the work content and work conditions. However, the present invention is not limited to this. For example, when the worker is moving to the work site or preparing for work regardless of whether the worker is underwater, underwater, or onshore, the worker So that a plurality of magnets (for example, magnet 100 in FIG. 1) are not unexpectedly attracted by a strong attracting force, and even if they are attracted to each other, the attracting force is extremely weaker than usual. A structure provided with a thick and thick bag-like member capable of extremely reducing the attractive force by covering the attractive surface of the magnet as shown in FIGS. 4 (a) and 4 (b). It is also good. As a result, it is possible to prevent the danger that the magnets are attracted unexpectedly and pinch the operator's finger, resulting in injury to the operator. As a material of the bag-like member, for example, a rubber member having elasticity that can absorb an impact force at the time of adsorption, an independently foamed cushioning member including bubbles inside, and the like are preferable, but the material is not limited thereto. It is not a thing.

  Further, in the above configuration example, the configuration including the thick bag-like member is described so that the plurality of magnets are not attracted by the unexpectedly strong attractive force. The structure provided with the rubber caps (illustration omitted) which exhibits the same effect may be sufficient. The rubber cap is, for example, a cap having a structure that completely covers the attracting surface 111 of the magnet body 110 and the side wall surface of the magnet cover 130 (see FIG. 1), and is attached to the bottom surface of the cap, that is, the attracting surface 111. A metal thin plate member is charged in advance in the thick portion of the opposing surface. As a result, the state in which the cap is attracted to the attracting surface 111 of the magnet main body 110 is maintained by using the force that the magnet main body 110 tries to attract the metal thin plate-like member. The suction surface 111 can be securely covered during or during work preparation. Further, when removing the cap, since the attracting force by the metal thin plate member is not so strong, it can be removed with a normal force by holding the cap by hand. Further, the material of the cap is preferably, for example, a rubber member having elasticity that can absorb an impact force at the time of adsorption, or an independent foam cushioning member including bubbles inside, but is not limited thereto. It is not a thing.

  Further, in the above embodiment, the operator holds the arm member 140 of the magnet 100 by hand and moves it in the direction of arrow A or B (see FIG. 2), so that the magnet 100 is attracted by the lever principle. However, the present invention is not limited to this. For example, a through hole 142 (shown by a two-dot chain line in FIG. 2) is provided in the other end 141b of the arm member 140, and the through hole is provided. By connecting one end of the rope to 142 and pulling the other end of the rope in the direction of arrow A, the magnet 100 can be quickly removed from the object to be attracted with a small force even from a remote location.

  Further, in the above embodiment, as an embodiment of the present invention, a case where the other end portion 141b of the arm member 140 as an example of the rod-shaped member of the present invention protrudes outside the outer peripheral portion of the magnet body 110 will be described. (See FIG. 1). However, the arm member is not limited to this. For example, even if the arm member has the configuration shown in FIG. FIG. 8 is a side view of the seventh magnet 700, and the same reference numerals are given to basically the same components as those of the magnet 100 described above. In the seventh magnet 700 shown in FIG. 8, the vertical arm member 740 has a magnet cover such that one end 741a is fixed to the center of the upper surface of the magnet cover 130 and the other end 741b is located above the vertical cover. It is arranged perpendicular to the upper surface of 130. One end portion 741a of the vertical arm member 740 is formed with, for example, a connecting hole 720 for connecting the body of an operator (not shown) through the rope member 2, and the other end portion 741b has the other end portion 741b. An operator at a remote location pulls the other end of the rope (not shown) in the direction of arrow H (see FIG. 8), for example, so that the seventh magnet 700 can be quickly removed from the object to be attracted 1001 with a small force. In order to be able to do so, a through-hole 742 is formed which can tie one end of a rope (not shown). Further, in the seventh magnet 700 shown in FIG. 8, the other end portion 741 b of the vertical arm member 740 is, for example, compared with the case where the operator directly removes the attracted object 1001 by holding the magnet cover 130 and pulling it up. By moving in the direction of arrow H, the seventh magnet 700 is rotated about the right corner 133R of the magnet cover 130 in FIG. 8 as a fulcrum, and can be removed with a smaller force. The length is set.

  In the above-described embodiment, the configuration in which the rubber sheet-like member 150 is attached to the attracting surface 111 side of the magnet 100 has been described. However, the configuration is not limited thereto, and for example, a rubber-like film is formed by drying. An adhesive or the like may be applied to the attracting surface 111 side, or at least the attracting surface 111 of the magnet body 110 may be pre-coated with a coating agent. As a result, it is possible to easily prevent the magnet 100 from being adsorbed to the object to be adsorbed with iron rust or the like adsorbed by simply wiping the adsorbed surface with a piece of cloth or gloves. It is possible to prevent the adsorption force from being reduced by damaging the anticorrosion film or the like, or by the presence of iron rust or the like.

  In the above-described embodiment, the case where the fifth magnet 500 shown in FIGS. 6A and 6B uses the nut-equipped coupler 520 that also functions as a fixing nut has been described. For example, a ring-shaped member or hole that can be connected to the object to be connected is provided at one end 541 a of the fifth arm member 540, and is screwed into the tip 532 of the fixing bolt 530. The configuration may be such that the one end 541a of the member 540 is separated from the function of a fixing nut for firmly fixing the one end 541a to the upper surface 512 of the fifth magnet body 510.

  In the above embodiment, the case where the shape of the attracting surface of the magnet body is substantially circular has been described. However, the shape is not limited to this, and may be a polygon such as a triangle, a quadrangle, a pentagon, and a hexagon. Or any shape such as an oval or gourd shape.

  Moreover, in the said embodiment, in order to fix the 5th magnet main body 510 (refer FIG. 7 (a), FIG.7 (b)) and the one end part 541a of the 5th arm member 540, the head 531 has a plate shape. However, the present invention is not limited to this. For example, the shape of the head of the fixing bolt 530 may be a hexagonal shape or a round head with rounded corners on the upper surface. Any shape such as a shape may be used. In this way, for example, when a fixing bolt 530 having a hexagonal or pan-shaped head is used, the diameter of the first through hole 511 formed in the central portion of the fifth magnet body 510 is the head of the fixing bolt 530. And the depth of the first through-hole 511, that is, the thickness of the fifth magnet main body 510 may be larger than the height of the head of the fixing bolt 530. In addition, the fifth magnet main body 510 in this configuration is firmly fixed to the inner surface of the second magnet cover 630 with an adhesive or the like. As a result, the fifth magnet body 510 in this case has the head of the fixing bolt 530 without forming the funnel-shaped inclined surface 511a on the outer peripheral edge of the first through hole 511 on the suction surface 513 side. Does not protrude toward the attracting surface 513 side of the fifth magnet body 510, and the one end 541a of the fifth arm member 540 is attached to the upper surface of the second magnet cover 630 by the fixing bolt 530 and the connecting tool 520 with a nut. It is firmly fixed to.

  According to the magnet of the present invention, it is possible to improve the work efficiency in the sea, underwater or on land. For example, in the state where the magnet is adsorbed to the object to be adsorbed in the sea or underwater, the diver himself The body can be connected to the magnet connector via the rope member, so that the diver can work in a stable state and also operate the other end of the magnet rod-like member using the lever principle This makes it possible to remove a magnet with a strong magnetic force from the object to be adsorbed with a lighter force than when the lever principle is not used, so that a diver can improve work efficiency in the sea and underwater. Useful as.

DESCRIPTION OF SYMBOLS 1 Ship bottom 2 Rope member 100 Magnet 110 Magnet main body 111 Adsorption surface 120 Connecting tool 130 Magnet cover 140 Arm member 150 Sheet-like member 160 Bag-like member 170 Second sheet-like member

Claims (4)

A magnet body;
A magnet cover member for covering the magnet body;
A connector capable of being connected to an object to be connected;
A rod-like member having one end attached to the magnet cover member,
The other end portion of the rod-shaped member protrudes outside the outer peripheral portion of the magnet body,
The said coupling tool is provided in the said magnet cover member or the said rod-shaped member, The magnet characterized by the above-mentioned.   The magnet according to claim 1, further comprising a sheet-like member that can be attached to the attraction surface. As for the sheet-like member, a plurality of types having different thicknesses are prepared in advance,
The magnet according to claim 2, wherein the degree of attraction force of the magnet main body can be adjusted by selecting any one of the sheet-like members from the plurality of types. A magnet body;
A rod-like member having one end attached to the upper surface of the magnet body;
A connector arranged at the one end of the rod-shaped member and capable of connecting objects to be connected;
The magnet is characterized in that the other end portion of the rod-shaped member protrudes outside the outer peripheral portion of the magnet body.

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