JP7444517B2 - construction equipment - Google Patents

Description

The present invention relates to a construction tool for pressing a non-magnetic material onto a soft magnetic material using magnetic force.

In recent years, in interior construction work for buildings, it has been common to screw, for example, gypsum board (non-magnetic material) to base steel (soft magnetic material) or wood. In this case, the work was carried out using an electric drill using a power cord, which required time and effort to prepare, and also generated noise and dust.

In addition, when layering a top layer (e.g., non-magnetic material) on an under layer (e.g., soft magnetic material) using a solid adhesive, the solid adhesive portion is manually applied with a special roller and kept at a constant level. There were times when it took a long time to perform the clamping work. In this case, there was a lack of reliability due to unevenness of work among individuals.

The present invention eliminates the need for a power supply or electric drill in the work of fixing a non-magnetic material to a soft magnetic material, reduces manual work time and labor, and eliminates the level of skill and unevenness of the work of the worker, resulting in accurate and accurate work. The purpose is to obtain a new construction tool that generates pressing force using magnetic force, which enables reliable construction. Another purpose is to obtain construction tools suitable for automation of work by robots.

The present invention provides the following items.

(Item 1)
a first magnetic attraction part that generates magnetic force;
a second yoke spaced apart from the first magnetic attraction part;
A construction tool comprising: a coupling yoke section that magnetically couples the first magnetic attraction section and the second yoke.

(Item 2)
The construction tool according to item 1, wherein the construction tool is for fixing a non-magnetic material to a soft magnetic material, and includes the first magnetic attraction part, the second yoke, and the coupling yoke part. and the soft magnetic material constitute a magnetic circuit via the non-magnetic material.

(Item 3)
The construction tool according to item 1 or 2, further comprising a second magnetic attraction part disposed at the tip of the second yoke, wherein the first magnetic attraction part and the second magnetic attraction part have different magnetic poles. .

(Item 4)
The construction tool according to item 1, further comprising a first yoke between the first magnetic attraction part and the coupling yoke part.

(Item 5)
The construction tool according to item 3, wherein the first magnetic attraction part and the second magnetic attraction part are comprised of at least one of a permanent magnet or an electromagnet.

(Item 6)
The construction tool according to item 1, wherein the coupling yoke portion includes an auxiliary magnetic attraction portion including an electromagnet.

(Item 7)
The construction tool according to item 3, wherein a third magnetic attraction part that generates magnetic force is arranged in the coupling yoke part between the first magnetic attraction part and the front two yokes or the second magnetic attraction part. .

(Item 8)
The first magnetic attraction part, the third magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a first magnetic circuit via the nonmagnetic body,
The construction according to item 4, wherein the second magnetic attraction part, the third magnetic attraction part, the coupling yoke part, and the soft magnetic material constitute a second magnetic circuit via the nonmagnetic material. utensils.

(Item 9)
The first magnetic attraction part and the second magnetic attraction part are each permanent magnets, and each magnetic pole is a magnetic pole of opposite polarity,
The construction tool according to item 4, wherein the third magnetic attraction part is an electromagnet.

(Item 10)
The coupling yoke part includes a fourth magnetic force that generates a magnetic force between the first magnetic attraction part and the third magnetic attraction part or between the second magnetic attraction part and the third magnetic attraction part. The construction tool according to item 4, in which the suction part is arranged.

(Item 11)
The first magnetic attraction part, the second magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a first magnetic circuit via the nonmagnetic body,
The first magnetic attraction part, the third magnetic attraction part or the fourth magnetic attraction part adjacent to the first magnetic attraction part, the coupling yoke part, and the soft magnetic material are arranged so that the non-magnetic material configuring a second magnetic circuit through the
The second magnetic attraction part, the fourth magnetic attraction part or the third magnetic attraction part adjacent to the second magnetic attraction part, the coupling yoke part, and the soft magnetic material are arranged so that the non-magnetic material 8. The construction tool according to item 7, wherein the construction tool comprises a third magnetic circuit through which a third magnetic circuit is connected.

(Item 12)
The construction tool according to item 7, further comprising a casing made of a non-magnetic material that houses the first magnetic attraction part, the second magnetic attraction part, the third magnetic attraction part, and the fourth magnetic attraction part.

(Item 13)
The construction tool according to item 1, wherein the construction tool includes a sliding member on a contact surface with the non-magnetic material.

(Item 14)
A control mechanism is provided for controlling the pressing force of the first magnetic attraction part, the second magnetic attraction part, the third magnetic attraction part, and/or the fourth magnetic attraction part against the soft magnetic material via the nonmagnetic material. , the construction tool according to item 9 or 10.

(Item 15)
a first yoke;
a second yoke spaced apart from the first yoke;
a coupling yoke portion that magnetically couples the first yoke and the second yoke;
In the construction tool, the coupling yoke section includes a magnetic adsorption section including an electromagnet that generates magnetic force between the first yoke and the second yoke.

(Item 16)
The construction tool according to item 12, wherein the construction tool is for fixing a non-magnetic material to a soft magnetic material,
The first yoke, the magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a first magnetic circuit via the nonmagnetic body,
A construction tool, characterized in that the second yoke, the magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a second magnetic circuit via the nonmagnetic body.

According to the present invention, in the work of fixing a non-magnetic material to a soft magnetic material, it is possible to reduce the time and labor required for manual work, and it is also possible to advance the automation of the work by a robot. Further, in the work of fixing a non-magnetic material to a soft magnetic material, it is possible to efficiently achieve accurate and reliable construction without depending on the skill level of the worker. Furthermore, construction can be carried out without noise.

FIG. 1 is a diagram for explaining a construction tool 100 according to Embodiment 1 of the present invention. 2 is a diagram for explaining the construction tool 100 shown in FIG. 1, showing the structure of the construction tool 100 as seen from the direction A in FIG. 1, and the structure of the construction tool 100 seen from the direction B in FIG. 1. FIG. FIG. 2 is a perspective view for explaining an example of how to use the construction tool 100 shown in FIG. 1. FIG. 2 is a diagram for explaining a magnetic circuit formed between the construction tool 100 and the soft magnetic body 10 shown in FIG. 1. FIG. FIG. 2 is a perspective view for explaining a construction tool 101 that is a modification example 1 of Embodiment 1 (construction tool 100) shown in FIG. 1. FIG. 2 is a diagram for explaining a construction tool 102 that is a second modification of the first embodiment (construction tool 100) shown in FIG. 1. FIG. 2 is a diagram for explaining a construction tool 200 according to Embodiment 2 of the present invention, showing the appearance of the construction tool 200, the structure of a casing 240, and a side view of the construction tool 200. FIG. 8 is a perspective view for explaining the usage state of the construction tool 200 of the second embodiment shown in FIG. 7. FIG. 8 is a side view for explaining the work of separating the construction tool 200 shown in FIG. 7 from the non-magnetic material 20. FIG. FIG. 7 is a perspective view for explaining a magnetic adjustment mechanism of a construction tool 250 according to Embodiment 3 of the present invention. FIG. 7 is a diagram for explaining a construction tool 300 according to Embodiment 4 of the present invention. 11 is a diagram for explaining a construction tool 400 that is a first modification of the fourth embodiment shown in FIG. 10. FIG. It is a figure for explaining construction tool 500 according to Embodiment 5 of the present invention. 13 is a diagram for explaining a construction tool 600 of a first modification of the fifth embodiment shown in FIG. 12. FIG. It is a figure for demonstrating the construction tool 700 of Embodiment 6 of this invention. FIG. 3 is a diagram for explaining a situation in which magnetic flux emitted from a magnet reaches a soft magnetic material.

The present invention will be explained below. It should be understood that the terms used herein have the meanings commonly used in the art, unless otherwise specified. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification (including definitions) will control.

As used herein, "about" refers to a range of ±10% of the following number.

An object of the present invention is to obtain a new construction tool that generates pressing force using magnetic force, which can reduce manual work time and labor in the work of fixing a non-magnetic material to a soft magnetic material.
a first magnetic attraction part that generates magnetic force;
a second yoke disposed at a distance from the first magnetic attraction part;
The above problem is solved by providing a construction tool that includes a coupling yoke section that magnetically couples the first magnetic attraction section and the second yoke.

Therefore, in the construction tool of the present invention, the magnetic flux emitted from the magnet is prevented from leaking to the surroundings by the two yokes and the coupling part that magnetically couples them, and reaches the soft magnetic material far from the magnet. It is not particularly limited as long as it can be used, and will be specifically explained below.

Note that "magnetically coupled" here refers to the realization of a bond between materials through which magnetic flux can pass without resistance.

In addition, in the present invention, a "magnetic circuit" refers to a magnetic flux emitted from a permanent magnet and/or an electromagnet that is a first magnetic attraction part, which directly or indirectly through a yoke jumps into a magnetic body disposed at a certain distance. , passes through the magnetic material, flows into a permanent magnet and/or electromagnet that is a second magnetic attraction part arranged at a certain distance, or into a second yoke, and then flows through the yoke coupling part and the first yoke again to the second yoke. One closed circuit is formed by returning to a permanent magnet and/or an electromagnet that is a magnetic attraction part (for example, see FIG. 4).

The construction tool of the present invention can be widely used in construction work that requires fixing a non-magnetic material to a soft magnetic material. In particular, it is preferred as a magnetic construction tool for constructing wall materials for buildings, in which plate-like objects made of non-magnetic material such as plasterboard are fixed to a base made of soft magnetic steel material via adhesive. The invention is not limited to this. It is clear that the present invention can be used as a construction tool for fixing not only wall materials but also floor materials, ceiling materials, etc.

(magnet)
The magnet may be in any form as long as it generates magnetic force and generates magnetic adsorption force (pressing force) in the work of fixing a non-magnetic material to a soft magnetic material by magnetic force. Furthermore, the number of magnets may be arbitrary. For example, the number of magnets may be one, two or more, permanent magnets or electromagnets, or a combination of permanent magnets and electromagnets.

For example, in one embodiment, the magnet may be a first magnet placed at the tip of a first yoke, which will be described below. The number of the first magnets may be one or more. In another embodiment, the magnet may be a second magnet placed at the tip of the second yoke. The number of the second magnets may be one or more. In addition, in the case where a first magnet and a second magnet are provided, the surface of the first magnet and the surface of the second magnet have magnetic poles with opposite polarities. Furthermore, in this one embodiment, both the first magnet and the second magnet may be permanent magnets, or both may be electromagnets. Furthermore, one (first magnet) may be a permanent magnet, and the other (second magnet) may be an electromagnet.

For example, in one embodiment, the magnet may be a neodymium magnet that generates a strong magnetic force, but the present invention is not limited thereto. For example, magnets made of various materials such as ferrite and samarium cobalt may be used as long as the desired magnetic force (pressing force) can be obtained.

(yoke)
The construction tool of the present invention may include a yoke for increasing the magnetic force (pressing force) that presses the non-magnetic material against the soft magnetic material. The yoke has the characteristic of easily passing the magnetic flux emitted from the magnet, and by forming a magnetic circuit by combining the yoke and the magnet, it becomes possible to provide a stronger magnetic force (pressing force). The form and material of the yoke may be arbitrary. For example, the material of the yoke may be an iron-based material such as pure iron with few impurities or steel with a low carbon content (low carbon steel), but the present invention is not limited thereto. For example, it may be made of magnetic stainless steel. In one embodiment, SS-400 or SUS416 may be used. In particular, SUS416 is suitable because it can suppress rust.

The yoke includes at least a coupling yoke section that can be coupled to the magnetic attraction section. Depending on the situation, a first yoke, a second yoke, etc. may be provided, which are arranged at a predetermined interval. Embodiment 1, which will be described later, may include a first yoke, a second yoke spaced apart from the first yoke, and a coupling yoke portion that magnetically couples the first yoke and the second yoke. . The yoke may be equipped with a first magnet serving as a first magnetic attraction portion that generates magnetic force at least on the coupling yoke portion. Furthermore, if it is desired to further increase the magnetic force (pressing force) that presses the non-magnetic material against the soft magnetic material, a second magnet can be attached to the tip of the second yoke.

FIG. 15 is a diagram for explaining a situation in which magnetic flux emitted from a magnet reaches a soft magnetic material. As shown in FIG. 15(a), when the magnet A1 (which may be a permanent magnet or an electromagnet) is placed at the tip of the yoke 320, the magnetic flux F emitted from the magnet A1 is transferred from the magnetic pole surface to the soft magnetic material. However, if the magnet A1 is placed between the yokes 320 and 420 instead of at the tip of the yoke 320, as shown in FIG. 15(b), the entire surface of the yoke 420 is Since it becomes a magnetic pole, the magnetic flux F spreads over a wide space, and the magnetic flux F directed toward the soft magnetic body 10 decreases. For this reason, it is preferable to provide the magnetic attraction portion made of the magnet A1 at the tip of the yoke 320.

The first yoke and the second yoke are substantially columnar bodies. The first yoke and the second yoke are configured such that a first magnet or a second magnet can be attached to their tips, and connectable to a coupling yoke portion at their rear ends. By adjusting the distance L1 (see FIG. 2) from the tip to the rear end of the first yoke and/or the second yoke, it is possible to reduce the leaking and wasted magnetic flux. For example, in one embodiment, the distance L1 from the tip to the rear end of the first yoke and/or the second yoke is about 30 mm or more.

In addition, when attaching a permanent magnet to the tip of the first yoke and/or the second yoke, the thickness L3 in the magnetization direction of the permanent magnet adopted in the example is about 25 mm, so the actual yoke part has a thickness of about 30 mm ( =L1).

This means that when the thickness L5 of the non-magnetic material fixed to the soft magnetic material is assumed to be approximately 50 mm, if the thickness L1 of the first yoke and/or the second yoke is approximately 30 mm or less, the thickness L3 of the permanent magnet is approximately Even if 25 mm is added, the length L6 to the coupling yoke will be approximately 55 mm or less, and the distance from the permanent magnet's magnetic pole face will be the same as, or in some cases close to, the distance through the non-magnetic material, and the magnetic flux will decrease. Instead of flowing toward the soft magnetic material, the magnetic flux flows toward the first yoke and/or second yoke and the coupling yoke portion located closer to the rear. However, this can be avoided by setting L1 to 30 mm or more.

On the other hand, the thickness L2 of the coupling yoke portion is set to about 15 m to about 30 mm since it is necessary to maintain sufficient passing ability to form a magnetic circuit when passing the magnetic flux emitted from the permanent magnet. Note that when the width L4 of the coupling yoke portion is approximately 50 mm, the thickness L2 of the coupling yoke portion is more preferably approximately 20 mm to approximately 25 mm.

Furthermore, for the same reason of preventing shorting of magnetic flux, in one embodiment, the inner distance L7 between the first yoke and the second yoke is about 50 mm to about 120 mm, preferably about 60 mm to about 110 mm. .

Furthermore, in one embodiment of the present invention, the surfaces of the first yoke and the second yoke that contact (combine) the permanent magnet are approximately 50 mm square. The reason for this is that the width of the soft magnetic material (underlying steel plate) that is the object of magnetic attraction is often about 40 mm, and the soft magnetic material has a width of about 50 mm. When fixing a body (for example, a gypsum board, etc.), the magnetic flux needs to pass through a non-magnetic material with a thickness of about 50 mm to reach the soft magnetic material. In order to achieve this, a magnetic pole surface with a width of about 40 mm or more is required, so a permanent magnet with a width of about 50 mm (a square with a length of about 50 mm) and a thickness of about 25 mm is selected from commercially available products. Adopted.

Note that since the magnetic fluxes emitted from the magnetic poles have a property of repelling each other, they rapidly spread in space and the magnetic flux density decreases. Therefore, in order to make the magnetic flux reach farther and more frequently, a permanent magnet with a wider and stronger magnetic pole surface (that is, a higher magnetic flux density on the magnetic pole surface) is preferable.

For example, in FIG. 15(c), the width of the permanent magnet A1 is almost the same as the width of the soft magnetic material 10, whereas in FIG. 15(d), the width of the permanent magnet B1 is The width is narrower than the width of the . Even if the permanent magnets in (c) and (d) are made of the same material (that is, have the same magnetic flux density), the magnetic flux F reaching the soft magnetic material 10 is larger in (c) and in (d). There will be fewer. Because magnetic fluxes have the property of repelling each other and spreading into space, the magnetic flux F emitted from the edge of the magnetic pole plane is pushed by the magnetic flux in the center and is bent and spread into space, causing the soft magnetic material to It will not be possible to reach 10. In addition, the ratio of the area of the end to the magnetic pole plane is much larger for a magnet with a narrow area or narrow width.In other words, the ratio of magnetic flux that spreads out into space and cannot reach the soft magnetic material increases. It happens. Therefore, the width of the permanent magnet is preferably larger than the width of the soft magnetic material so as to cover the entire width of the soft magnetic material. In one embodiment, the width of the permanent magnet is about 1.25 times the width of the soft magnetic material.

(Non-magnetic material)
The non-magnetic material may have any form and material as long as it can be pressed and fixed to the soft magnetic material through the magnetic force of the construction tool of the present invention. For example, the nonmagnetic material is a plate-like member, but the present invention is not limited thereto, and may have various shapes. Further, the non-magnetic material is, for example, gypsum board used for wall materials of buildings, but is not limited thereto. For example, wall materials, floor materials, ceiling materials, etc. made of aluminum, resin, paper, etc. may be used.

For example, as a non-magnetic material, there is a gypsum board used as a wall material for buildings, which has a thickness of about 5 mm to about 50 mm.

(soft magnetic material)
The form and material of the soft magnetic body may be arbitrary as long as it can be attracted by the magnetic force of the magnet. For example, it may be an electromagnetic steel plate (silicon steel plate), permalloy, soft ferrite, pure iron, amorphous, or the like. For example, the soft magnetic material may be a base steel material used for building supports. However, the present invention is not limited thereto.

For example, the soft magnetic material is a base steel material used for building pillars and the like having a thickness of about 0.35 mm to about 1.0 mm. Note that this base steel material is sometimes called a "stud".

(Magnetic circuit via soft magnetic material and non-magnetic material)
The construction tool of the present invention is a device for fixing a non-magnetic material to a soft magnetic material, and this construction tool includes a first magnet, a yoke (a first yoke, a second yoke, and a coupling yoke portion). By providing this, in the work of pressing and fixing a non-magnetic material to a soft magnetic material, the magnetic flux emitted from the first magnet flows in the order of the first yoke, the coupling yoke, and the second yoke, and the magnetic flux emitted from the second yoke is non-magnetic. A "magnetic circuit" is formed in which the air flows through the magnetic material to the soft magnetic material, and then from the soft magnetic material to the first magnet. Due to the formation of this magnetic circuit, the magnetic flux emitted from the first magnet hardly leaks to the surroundings, and flows through the magnetic circuit to press the non-magnetic material against the soft magnetic material with strong magnetic force (pressing force). It becomes possible.

Although the case where the first magnet is provided at the tip of the first yoke has been described, almost the same magnetic circuit can be used even if the second magnet is provided at the tip of the second yoke in addition to the tip of the first yoke. It is formed. In addition, in that case, the magnetic poles of the surface of the first magnet and the surface of the second magnet are opposite magnetic poles. When the first magnet and the second magnet are provided in this way, it is possible to generate stronger magnetic force (pressing force) than when only the first magnet is used, which is preferable. The number of magnets may be increased depending on the required pressing force.

(Casing that houses the magnet)
Preferably, the construction tool has a casing made of a non-magnetic material that houses the first magnet and the second magnet.

The magnets used in construction equipment include neodymium magnets that generate a large magnetic force, so if surrounding soft magnetic materials are directly attracted to the magnet during storage or maintenance work, they may not separate from the magnet or become attracted to it. In order to avoid this situation, it is effective to prevent surrounding materials such as soft magnetic materials from being attracted directly to the magnet. be.

Further, the casing may contain both the first magnet and the second magnet, or may include a first casing containing the first magnet and a second casing containing the second magnet. But that's fine. When the casing accommodates both the first magnet and the second magnet, the structure of the casing is simple and product costs can be reduced.

In addition, when the casing has a casing corresponding to each of the first magnet and the second magnet, the first magnet and the second magnet are attached to the yoke with the first yoke and the second yoke fixed to the coupling yoke part. Installation work becomes easier. This is because the yoke and the magnet are fixed by the strong magnetic force generated between them, so when the first magnet and the second magnet are housed in one casing, the first magnet and the second magnet As the respective magnetic forces influence each other, it becomes complicated to store the first magnet and the second magnet in respective predetermined positions in the yoke. In contrast, by dividing the casing into a casing that houses the first magnet and a casing that houses the second magnet, the influence of the second magnet can be reduced during the work of attaching the first magnet housed in the first casing to the first yoke. This is because the influence of the first magnet can be suppressed in the work of attaching the second magnet housed in the second casing to the second yoke, thereby making it possible to improve the efficiency of the attachment work.

(Slip property)
In the construction tool of the present invention, when a non-magnetic material is fixed to a soft magnetic material, the weight of the construction tool is determined by the maximum static friction force (this maximum static friction force) on the contact surface of the construction tool with the non-magnetic material. , considering the magnetic attraction force between the soft magnetic material and the soft magnetic material by the construction tool).

The construction using the construction tool of the present invention is basically to move the construction tool from the uppermost position to the lowermost position along a substantially vertical direction. Therefore, when performing the above construction, a downward force is applied due to the weight of the construction tool, making it easy to place the construction tool on a non-magnetic material with almost no force when working with the construction tool with bare hands. It is possible to move it to.

In one embodiment, installation equipment and gypsum board for attaching gypsum board, which is a non-magnetic material and has a thickness of 19.6 mm, to a base steel plate (stud) which is a soft magnetic material and has a thickness of 0.83 mm. The maximum static friction force between the installation tool and the gypsum board is approximately 4.3 kgf (the contact surface of the installation tool with the gypsum board is aluminum, and the coefficient of static friction between the installation tool and the gypsum board is 0.55 based on the measurement results) .

In contrast, the weight of the construction tool in one embodiment of the present invention is approximately 4.5 kg, which is approximately the same as the maximum static friction force between the construction tool and the gypsum board, so the construction tool can be moved with almost no force. It can be moved vertically along the soft magnetic material, making it easier for workers to perform construction.

In addition, in other embodiments, when the thickness of the stud is 0.83 mm, the thickness of the gypsum board is 9.8 mm, and the coefficient of static friction between the construction tool and the gypsum board is 0.55, the maximum static friction force is approximately 7. .2 kg. In this case, if the construction tool weighs approximately 4.5 kg, it will be necessary for the worker to apply force to the construction tool during construction, but in such a case, the surface of the construction tool that will come into contact with the plasterboard The coefficient of static friction may be lowered by providing a sliding member or the like.

In addition, in the above description, the weight of the construction tool was explained based on the maximum static friction force, but it goes without saying that the weight is not necessarily limited to this explanation. Further, the relationship with dynamic friction force is also similar.

(Sliding member)
By providing a sliding member, it is possible to smoothly slide the construction tool on the non-magnetic material and continuously move the position where the non-magnetic material placed on top of the soft magnetic material is pressed. becomes.

The slipperiness may be increased by reducing the surface roughness of the contact surface by polishing or the like, or a highly slippery material such as fluororesin may be attached to the contact surface.

(Press force control mechanism)
The construction tool of the present invention can exhibit the following effects by being equipped with a pressing force control mechanism.

When the construction tool of the present invention is used in a construction method in which a non-magnetic material (e.g., gypsum board, etc.) is attached to a base steel material (for example, a base steel plate), it is pressed against the surface of the gypsum board and the base steel plate is attached. When you approach this position, the magnetic attraction pulls the tool onto the underlying steel plate, allowing you to start work smoothly. Once the work is finished, the device can be moved within the plasterboard surface and away from the underlying steel sheet with relatively little force.

Specifically, although special devices and tools are not necessarily required, if this device is used for a different task, it may be necessary to weaken the magnetic attraction force before starting the task or after completing the task. There is. Therefore, preferably, the construction tool can include a mechanism that controls the pressing force for pressing the non-magnetic material against the soft magnetic material using magnetic force. The installation tool should not be used when the installation tool is accidentally fixed to a soft magnetic material for which it was not intended, or after a wide continuous non-magnetic material is firmly fixed to the soft magnetic material via the adhesive due to the pressing force of the construction tool. Although it is necessary to separate the tool from the non-magnetic surface, in such a case, it is possible to easily separate the construction tool from the non-magnetic surface by adjusting the pressing force due to the magnetic force.

However, instead of providing such a control mechanism in the construction tool, the construction tool may be shaped so that it can be easily pulled away from the surface of the non-magnetic material using a principle such as a lever.

(Thickness of soft magnetic material and non-magnetic material, and magnitude of pressing force)
The thickness of the soft magnetic material to which the construction tool of the present invention is applied is not particularly limited, but is approximately 0.35 mm or more, preferably approximately 0.45 mm or more.

Note that if the thickness of the soft magnetic material is thin, the ability (function) to pass magnetic flux will be small, and if it is thick, the ability (function) will be strong. ) is preferably thick. Therefore, by adding a soft magnetic material to the back side of the existing base steel material, it is possible to increase the magnetic attraction force even if the existing base steel material is thin.

The thickness of the non-magnetic material to which the construction tool of the present invention is applied is not particularly limited, but is approximately 60 mm or less, preferably approximately 50 mm or less.

The construction tool of the present invention has a pressing force of approximately 1.0 kgf for pressing the non-magnetic material against the soft-magnetic material when the thickness of the soft-magnetic material is 0.5 mm or more and the thickness of the non-magnetic material is 50 mm or less. Preferably, the magnetic force of the first magnet and/or the second magnet, the distance from the tip to the rear end of the first yoke and/or the second yoke, and the height of the coupling yoke part are adjusted so as to achieve approximately 1.3 kgf or more. Now, the distance between the first yoke and the second yoke is adjusted.

As described above, the construction tool of the present invention prevents the magnetic flux emitted from the magnet from leaking due to the first yoke, the second yoke, and the coupling portion that magnetically couples them, and prevents the soft magnetic material away from the magnet from leaking. Although there is no particular limitation as long as the magnetic flux from the magnet reaches the area occupied by the soft magnetic material as if passing through, in the following embodiment, two magnets, two yokes, and a coupling yoke are used. The explanation will be given with reference to those having the following.

In particular, in Embodiment 1, the construction equipment is specially designed for use with a tape-shaped solid adhesive (Smart JG construction method (registered trademark)) on the base steel material as a soft magnetic material and the plasterboard as a non-magnetic material that will become the wall surface of the building. This is an installation tool used when fixing using double-sided adhesive tape).

As a first modification of the first embodiment, there is a construction tool in which the structure of the casing that houses the magnet is different from that of the first embodiment.

As a second modification of the first embodiment, there is a construction tool in which the outer shape of the coupling yoke portion is different from that of the first embodiment.

In the second embodiment, a construction tool having a structure for easily separating a construction tool magnetically attracted to a soft magnetic material from a non-magnetic material will be described.

In Embodiment 3, a construction tool including a mechanism for controlling magnetic attraction force will be described.

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective view for explaining a construction tool 100 according to Embodiment 1 of the present invention, FIG. 1(a) shows the appearance of this construction tool, and FIG. 1(b) shows the construction tool 100. The structure of the casing 140 is shown in an exploded manner. FIG. 2 is a diagram for explaining the construction tool 100 shown in FIG. 1, and FIG. 2(a) is a side view showing the structure of the construction tool 100 when viewed from direction A in FIG. 1, and FIG. 2(b) 2 is a top view showing the structure of the construction tool 100 when viewed from direction B in FIG. 1. FIG.

This construction tool 100 has the structure shown in FIG. 1(a), and is an instrument for pressing a non-magnetic material 20 onto a soft magnetic material 10, and includes a first magnet 110a made of a permanent magnet as a first magnetic attraction part, It has a second magnet 110b made of a permanent magnet as a second magnetic attraction part, a first yoke 120a, a second yoke 120b, a coupling yoke part 130, and a casing 140.

(First magnet 110a, second magnet 110b)
As shown in FIG. 1B, the casing 140 includes a main body 141 as a rectangular parallelepiped-shaped container with a bottom, and a rectangular flat lid 142 that closes the upper opening of the main body 141. The four corners of 142 are fixed to the side wall end surface of main body part 141 with screws 143. The first magnet 110a and the second magnet 110b are attracted and fixed to the lower ends of the first yoke 120a and the second yoke 120b via the lid 142 of the casing 140 by their own magnetic force. As a constituent material of the casing, non-magnetic materials such as aluminum and synthetic resin can be used. In addition, when the constituent material of the casing is aluminum, in one embodiment, its surface is subjected to a matte sandblasting treatment. Specifically, the process involves blasting with sand particles that have passed through a 100-mesh sieve woven from stainless steel threads with a thickness of 0.1 mm.

(First yoke 120a, second yoke 120b)
The first yoke 120a is connected to one end of a rectangular parallelepiped-shaped coupling yoke portion 130 with a connecting member (not shown) such as a screw, and the second yoke 120b is connected to the other end of the rectangular parallelepiped-shaped coupling yoke portion 130 with a screw. They are connected by connecting members (not shown) such as. The first yoke 120a, the second yoke 120b, and the coupling yoke portion 130 are made of a soft magnetic material such as iron.

(Coupling yoke part 130)
The coupling yoke portion 130 magnetically couples the two first yokes 120a and the second yoke 120b.

(magnetic circuit)
By magnetically coupling the first yoke and the second yoke by the coupling yoke portion 130, the magnetic flux emitted from the first magnet and the second magnet reaches a position a predetermined distance away from the first magnet and the second magnet. It becomes possible for the magnetic flux from the first magnet and the second magnet to reach the opposing soft magnetic body (not shown) with almost no leakage. By doing so, when the soft magnetic body 10 approaches the attraction surfaces of the first magnet 110a and the second magnet 110b within a predetermined distance, the first magnet 110a, the first yoke 120a, the coupling yoke part 130, the The second yoke 120b, the second magnet 110b, and the soft magnetic body 10 form a magnetic circuit through which a magnetic flux with high magnetic flux density passes. As a result, it becomes possible to press the non-magnetic material against the soft magnetic material by the strong pressing force generated by the magnetic force of the construction tool. Assuming that the thickness of the non-magnetic material fixed to the soft magnetic material is at most about 50 mm, the distance L6 from the part where the magnet faces the soft magnetic material to the coupling yoke is preferably about 55 mm or more. .

In the first embodiment, the first yoke is provided between the coupling yoke portion and the first magnet serving as the first magnetic attraction portion, and the second yoke is provided between the coupling yoke portion and the second magnet serving as the second magnetic attraction portion. Although the case where the first yoke is not provided and the first magnet, which is the first magnetic attraction part, may be connected directly to the coupling yoke part, the first magnet, which is the first magnetic attraction part, may be directly connected to the coupling yoke part without providing the second yoke. Even if the second magnet, which is the second magnetic attraction part, is directly connected, the same effect as in the first embodiment can be obtained as the construction tool of the present invention.

Further, in the construction tool 100, structurally, the first yoke 120a, the second yoke 120b, and the joint yoke part 130 serve as a handle part for holding the construction tool 100.

In such a construction tool 100, the distance between the pair of yokes 120a, 120b and the length of these yokes 120a, 120b (dimension in the direction perpendicular to the contact surface of the casing 140 with the non-magnetic material 20) are determined by the construction tool 100. 100 is based on the distance (air gap) between the magnets 110a, 110b and the soft magnetic body 10 when the non-magnetic body 20 is pressed against the soft magnetic body 10, the cross-sectional area and magnetic permeability of the soft magnetic body 10, etc. It is optimally set so that a desired pressing force (that is, the force with which the construction tool 100 presses the non-magnetic material 20 against the soft magnetic material 10) is obtained.

In addition, when a magnetic circuit is formed in this way, it is possible to concentrate the lines of magnetic force in the air gap (area where there is no soft magnetic material) included in the magnetic circuit, and as a result, the magnetic lines of force can be concentrated in the air gap (area where there is no soft magnetic material) included in the magnetic circuit, and as a result, the lines of force can be Magnetic materials can be magnetically attracted with strong force.

Next, a method of using the construction tool 100 of the first embodiment will be explained.

FIG. 3 is a diagram for explaining how to use the construction tool 100 shown in FIG. 1, and FIGS. 3(a) and 3(b) are perspective views showing the operating procedure of the construction tool 100, respectively. FIG. 4 shows a magnetic circuit formed between the construction tool 100 and the soft magnetic body 10, and FIGS. 4(a) and 4(b) show cases in which the air gaps have different sizes.

Specifically, the work described below is a work of attaching a gypsum board as the non-magnetic material 20 to a base steel material as the soft magnetic material 10 using a tape-shaped solid adhesive 30.

First, with the tape-shaped solid adhesive 30 attached to the base steel material 10, the gypsum board 20 is superimposed on the base steel material 10 via the tape-shaped solid adhesive 30. At this time, the gypsum board 20 is in close contact with the tape-shaped solid adhesive 30, so that the gypsum board 20 is temporarily fixed to the base steel material 10 (FIG. 3(a)).

In this temporarily fixed state, the construction tool 100 is brought close to the gypsum board 20 as shown by the arrow in FIG. b)) The first magnet 110a, first yoke 120a, coupling yoke portion 130, second yoke 120b, and second magnet 110b of the construction tool 100 are magnetically coupled to the soft magnetic material 10, and thereby the non-magnetic material 20 A magnetic circuit is formed with an air gap having a thickness of (FIG. 4(a)).

In the air gap in such a magnetic circuit, that is, in the part where the magnetic material does not exist, there are strong lines of magnetic force (high-density magnetic flux) MF1 comparable to the part where the magnetic material exists, and the construction tool 100 is attached to the base. It will be magnetically attracted to the steel material 10 with a large force. Note that when (distance L5 between the construction tool and the soft magnetic body (stud)) < (distance L7 between yokes), it becomes possible to reduce magnetic flux leakage, and an improvement in the attraction force can be expected.

In this state, by moving the construction tool 100 downward as shown by the arrow in FIG. I will have to move.

As a result, the portion of the gypsum board 20 that faces the base steel 10 via the tape-shaped solid adhesive 30 is pressed with an even pressing force, and the tape-shaped solid adhesive 30 allows the gypsum board 20 to become one piece. It will be permanently attached to the base steel material 10.

After that, the work of pressing the gypsum board 20 is similarly performed on the base steel material 10 located next to the base steel material 10 to which the gypsum board 20 is actually attached. By repeating such operations, the gypsum board 20 is attached to the base steel material 10.

Furthermore, the construction tool 100 can be used not only when attaching a gypsum board 20 to a steel substrate 10, but also when attaching another gypsum board 21 on the outside to a gypsum board 22 attached to a steel substrate 10 (see FIG. 4(b)). ) can also be used. Even in this case, if the total thickness of the two plasterboards 22 and 21 is within a range where the magnetic flux MF2 formed by the construction tool 100 can reach the base steel material 10 without leaking to the surroundings, as shown in FIG. 4(b). As shown, the first magnet 110a, first yoke 120a, coupling yoke portion 130, second yoke 120b, and second magnet 110b of the construction tool 100 are magnetically coupled to the soft magnetic body 10, and they close the air gap. This results in the formation of a magnetic circuit including

In the construction tool 100 of Embodiment 1 having such a configuration, when pressing a non-magnetic material onto a soft magnetic material, a large pressing force can be generated by magnetic force even if the distance to the soft magnetic material is long.

In addition, since the plate-like object (that is, gypsum board) 20 is pressed against the base steel material by the magnetic attraction force of the construction tool 100, the force with which the plate-like object is pressed against the base steel material may vary depending on the worker, or the The object does not become uneven depending on the location of the object, and since the pressing operation only involves moving the construction tool 100 along the base steel material 10, the pressing force is uniform and time and effort are reduced. can.

Note that the construction tool 100 of the first embodiment has one casing 140 that houses two magnets, but the construction tool 100 has a first magnet 110a and a second magnet 110b instead of one casing 140. It may have separate casings 140a, 140b that individually accommodate each of the above.

(Modification 1 of Embodiment 1)
FIG. 5 is a perspective view for explaining a construction tool 101 having individual casings 140a and 140b corresponding to first and second magnets 110a and 110b as a first modification of the first embodiment, and FIG. ) shows the external appearance of this construction tool, FIG. 2 shows an exploded structure of the casing 140b.

This construction tool 101 stores each of the first magnet 110a and the second magnet 110b individually instead of the single casing 140 that stores the first magnet 110a and the second magnet 110b in the construction tool 100 of the first embodiment. It is equipped with two individual casings 140a and 140b.

Here, as shown in FIG. 5(b), the first casing 140a includes a main body part 141a as a rectangular parallelepiped-shaped container with a bottom, and a rectangular flat lid part 142a that closes the upper opening of the main body part 141a. The four corners of the lid portion 142a are fixed to the side wall end surface of the main body portion 141a with screws 143a. Further, as shown in FIG. 5(c), the second casing 140b also has a structure in which a lid portion 142b is fixed to a main body portion 141b with screws 143b, similarly to the first casing 140a.

Therefore, in this construction tool 101, the first magnet 110a is attracted and fixed to the lower end of the first yoke 120a by its own magnetic force via the lid part 142a of the casing 140a, and is covered by the main body part 141a. Similarly, the second magnet 110b is attracted and fixed to the lower end of the second yoke 120b via the lid part 142b of the second casing 140b by its own magnetic force, and is covered by the main body part 141b.

In this way, when the construction tool 101 has the casings 140a and 140b corresponding to the first yoke 120a and the second yoke 120b, the first yoke 120a and the second yoke 120b are fixed to the joint yoke part 130. The work of attaching the first magnet 110a and the second magnet 110b to each yoke becomes easier.

This is because the first yoke 120a and the first magnet 110a are fixed, and the second yoke 120b and the second magnet 110b are fixed by the magnetic force generated between them. and are housed in separate first casings 140a and second casings 140b, the work of attaching the first magnet 110a housed in the first casing 140a to the first yoke 120a is not affected by the second magnet. Furthermore, it is possible to perform the work of attaching the second magnet 110b housed in the second casing 140b to the second yoke 120b without being affected by the first magnet, and as a result, It is possible to shorten the working time.

Although the first magnet and the second magnet are each described as a permanent magnet in the first embodiment, it is clear that either one or both may be an electromagnet. Further, in other embodiments described below, the first magnet and the second magnet may be either permanent magnets or electromagnets.

Further, the outer shape of the construction tool 100 of the first embodiment is not particularly limited, and may have a different shape from the outer shape of the first embodiment. Further, in the first embodiment, the first magnet and the second magnet are attracted and fixed to the first yoke and the lower end of the first yoke via the lid of the casing by their own magnetic force, respectively. A through screw hole is provided in the height direction in the lid part, the first yoke, and the coupling yoke part so that they are coaxial in the state shown in FIG. The fixation of the first magnet within the casing may be reinforced. The same applies to the second magnet. Further, the same applies to the modified example of the first embodiment.

(Modification 2 of Embodiment 1)
FIG. 6 is a diagram for explaining a construction tool 102 that is a second modification of the construction tool 100 of the first embodiment shown in FIG. 1, and FIG. 6(a) is a side view corresponding to FIG. 2(a). FIG. 6(b) is a top view corresponding to FIG. 2(b).

The construction tool 102 according to the second modification of the first embodiment has a structure in which the first yoke 120a, the second yoke 120b, and the joint yoke part 130 are separate bodies in the construction tool 100 of the first embodiment, but instead of the first yoke 120a , a structure (integrated yoke) 150 in which the second yoke 120b and the coupling yoke portion 130 are integrated, and the other configurations are the same as the construction tool 100 of the first embodiment.

Specifically, in this construction tool 102, the integrated yoke 150 includes a first yoke portion 151 to which the first magnet 110a is fixed by magnetic attraction, and a second yoke portion to which the second magnet 110b is fixed by magnetic attraction. 152 and a coupling yoke portion 153 that magnetically couples the first yoke portion 151 and the second yoke portion 152 are integrally formed of one soft magnetic material and constitute the handle of the construction tool 102. There is.

As shown in FIG. 6(a), the joint yoke portion 153 constituting the grip portion of the handle has an arcuate outwardly curved portion (convex curved portion) 153a, and an anti-slip unevenness on the inner portion. Further, as seen in the top view of FIG. 6(b), the width becomes narrower as it approaches the center.

In this construction tool 102, the handle includes a convex curved portion 153a that curves outward, and is narrower toward the center than at both ends, so it is suitable for workers with small hands (for example, women). Even a worker) can easily hold the construction tool 102.

Even in the construction tool 102 having such a shape, if the lines of magnetic force shown in FIG. 4 can smoothly pass through the handle portion, the same effects as the construction tool 100 of the first embodiment can be obtained.

In addition, the construction tool 100 (101, 102) of the first embodiment (or its modification) has a non-magnetic material attached to the soft magnetic material 10 so that a sufficient pressing force of the non-magnetic material 20 to the soft magnetic material 10 can be obtained. 20, so after the work of pressing the non-magnetic material 20 onto the soft magnetic material 10 is completed, the non-magnetic material 20 is magnetically attracted to the soft magnetic material 10 via the non-magnetic material 20. It is preferable to include a mechanism for separating the construction tool 100 from the non-magnetic material 20 with good workability, and construction tools equipped with such a mechanism will be described below as Embodiment 2 and Embodiment 3.

(Embodiment 2)
FIG. 7 is a diagram for explaining a construction tool 200 according to Embodiment 2 of the present invention, FIG. 7(a) is a perspective view showing the appearance of this construction tool 200, and FIG. FIG. 7C is an exploded perspective view showing the structure of the casing 240 constituting the construction tool 200, and FIG.

The construction tool 200 of the second embodiment has a construction of the construction tool 100 of the first embodiment, but includes a casing 240 having a different external shape from the casing 140 in place of the casing 140 of the construction tool 100. In addition to the connecting yoke portion 230 that plays the role, an auxiliary handle 230a that plays the role of an additional handle is provided.

These configurations make it easy to rotate the construction tool 200 around the lower edge 241a of the casing 240, which is parallel to the longitudinal direction of the construction tool 200 (the direction in which the pair of magnets are lined up).

That is, in the construction tool 200 of the second embodiment, the casing 240 includes a main body part 241 and a lid part 242, like the casing 140 in the construction tool 100 of the first embodiment, and the lid part 242 is attached to the main body part 241 with screws 243. However, the structure of the main body part 241 is different from the main body part 141 of the casing 140 in the construction tool 100 of the first embodiment.

That is, in the casing 240 of the construction tool 200 of this second embodiment, one lower edge 241a parallel to the longitudinal direction of the main body 241 (the direction in which the pair of magnets are arranged), that is, the bottom surface and the side surface of the main body 241 intersect. The intersection part has a rounded chamfered shape, and has a shape that makes it easy to tilt the construction tool 200 laterally around the lower edge 241a as the central axis.

Therefore, even if the construction tool 200 is attracted to the non-magnetic material 20 due to strong magnetism between the soft magnetic material 10 and the soft magnetic material 10, it is easy to tilt the construction tool 200 toward the lower edge using the lower edge 241a as a fulcrum. The construction tool 200 can be separated from the non-magnetic material 20.

Further, in the construction tool 200 of the second embodiment, in addition to the coupling yoke portion 230 that plays the role of a handle, an auxiliary handle 230a is provided as an additional handle, so that the construction tool 200 can be separated from the non-magnetic material 20. When performing construction, the construction tool 200 can be tilted toward the lower edge 241a side by holding the joint yoke portion 230 with one hand and the auxiliary handle 230a with the other hand. The operation of separating the instrument 200 from the non-magnetic material 20 can be performed without difficulty.

Further, the first magnet 210a, second magnet 210b, first yoke 220a, second yoke 220b, and coupling yoke portion 230 that constitute this construction tool 200 have the same configuration as the corresponding members in the first embodiment. ing.

Here, the overall shape of the auxiliary handle 230a is a U-shape, and the tip of the portion corresponding to two parallel sides of the U-shape is located at one end side of the first yoke 220a and the second yoke 220b. It is joined to the side part. Here, the auxiliary handle 230a is made of a non-magnetic material such as aluminum or synthetic resin, and does not form a magnetic circuit together with the yoke, magnet, etc.

Next, a description will be given of an operation using the construction tool 200 of Embodiment 2, in which the construction tool 200 is separated from the non-magnetic material 20.

8 is a perspective view showing how the construction tool 200 of Embodiment 2 shown in FIG. 7 is used, and FIG. 9(a) shows a state in which the construction tool 200 is stuck to the non-magnetic material 20 due to magnetism, and FIG. 9(b) shows a state in which the construction tool 200 is tilted using the lower edge 241a of the casing 240 as a fulcrum. ing.

As shown in FIG. 8, when the construction tool 200 is moved to the lower end of the soft magnetic material 10 with the non-magnetic material (gypsum board) 20 pressed against the soft magnetic material (substrate steel material) 10. , an operation is performed to separate the construction tool 200 from the surface of the non-magnetic material 20.

Specifically, as shown in FIGS. 8 and 9(a), with the construction tool 200 stuck to the non-magnetic material 20 due to magnetism, the worker holds the coupling yoke with one hand (for example, the right hand). 230 and the auxiliary handle 230a with the other hand (for example, the left hand), apply force so that the construction tool 200 tilts to the right in the drawing with the lower edge 241a of the casing 240 as a fulcrum. That is, with the right hand, the user presses the coupling yoke part 230 so that the coupling yoke part 230 falls to the right, and with the left hand, the user pulls up the auxiliary handle 230a so that the auxiliary handle 230a is lifted.

As a result, the construction tool 200 rotates clockwise about the lower edge 241a of the casing 240 as a fulcrum, as shown in FIG. 9(b). At this time, since the lower edge 241a, which serves as the fulcrum of rotation, has a chamfered arcuate curved shape, the bottom surface of the casing 240 rises more smoothly from the surface of the non-magnetic material 20, and the construction tool 200 It can be easily separated from the surface of the non-magnetic material 20.

Furthermore, as Embodiment 3, the second embodiment is suitable for separating the construction tool 100 that is magnetically attracted to the soft magnetic material 10 via the non-magnetic material 20 from the non-magnetic material 20 with good workability. As a configuration different from the above, a construction tool equipped with a mechanism for adjusting the magnitude of the magnetic force that the construction tool attracts to the soft magnetic body 10 will be described.

(Embodiment 3)
The construction tool of Embodiment 3 may be the construction tool 100 of Embodiment 1 including a mechanism (magnetic force adjustment mechanism) for adjusting the magnetic attraction force of the construction tool, or the construction tool of Modification 1 of Embodiment 1. The instrument 101 may be equipped with the above magnetic force adjustment mechanism.

FIG. 9A is a perspective view for explaining a magnetic adjustment mechanism of a construction tool 250 according to Embodiment 3 of the present invention. As shown in FIG. 9A, the magnetic force adjustment mechanism constituting the construction tool of Embodiment 3 has one end side of the coupling yoke portion 130 with respect to the first yoke 120a, as shown in FIG. 9A (a). The first magnet 110a is provided rotatably around an axis J1 perpendicular to the magnetic attraction surface, and the other end side of the coupling yoke section 130 is placed relative to the second yoke 120b, and the back surface S1 of the other end side of the coupling yoke section 130 is and the surface S2 of the second yoke 120b are provided so as to be slidable surface to surface, and a latch J2 is further provided for connecting and restraining the second yoke 120b and the coupling yoke portion 130, and when it is desired to weaken the magnetic force, as shown in FIG. 9A. After releasing the latch J2, as shown in FIG. By moving it, it becomes possible to disconnect the magnetic circuit.

With a construction tool configured like this, there are cases where it is accidentally fixed to an unintended soft magnetic material, or a wide continuous non-magnetic material is firmly fixed to a soft magnetic material through the adhesive due to the pressing force of the construction tool. In situations where it is necessary to separate the construction tool from the surface of the non-magnetic material after the work has been done, it is possible to easily separate the construction tool from the surface of the non-magnetic material by adjusting the pressing force due to the magnetic force. .

(Embodiment 4)
FIG. 10 is a diagram for explaining a construction tool 300 according to Embodiment 4 of the present invention.

As shown in FIG. 10, the construction tool 300 of the fourth embodiment is the same as the first to third embodiments in that the first magnet 310a and the second magnet 310b are permanent magnets, but an electromagnet is attached to the coupling yoke portion 330. This differs from the construction instruments described in Embodiments 1 to 3 in that a forming coil 340 is provided. By supplying current in a predetermined direction (see arrow X in FIG. 10) to the coil 340, it becomes possible to increase the number of magnetic fluxes flowing through the magnetic circuit, and as a result, the non-magnetic material 20 is fixed to the soft magnetic material 10. It becomes possible to increase the magnetic attraction force.

Furthermore, by passing current through the coil 340 in a direction opposite to the predetermined direction (arrow Y in FIG. 10), the number of magnetic fluxes emitted by the first magnet 310a and/or the second magnet 310b is reduced.

In this way, by changing the direction and magnitude of the current flowing through the coil 340 that constitutes the electromagnet, it is possible to arbitrarily control the magnitude of the magnetic attraction force. In this way, by passing current through the coil in a direction that functions to weaken the number of magnetic fluxes emitted by the first magnet 310a and/or the second magnet 310b, the construction tool 300 can be attached to the soft magnetic material 10 directly or through the non-magnetic material 20. This makes it possible to easily release the magnetically attracted state to the soft magnetic body 10. In this configuration, when the construction tool 300 is provided at the tip of the robot hand, the direction of the current flowing through the coil 340 can be determined in two ways: when the non-magnetic material 20 is fixed to the soft magnetic material 10 with the construction tool 300, and when the non-magnetic material 20 is fixed to the soft magnetic material 10 by the construction tool 300, and This is particularly useful when automating work by controlling the state in which the construction tool 300 is moved to a work location using a control device (not shown).

(Modification 1 of Embodiment 4)
FIG. 11 is a diagram for explaining a first modification of the fourth embodiment shown in FIG. 10. As shown in FIG. 11, in the construction tool 400 of the first modification of the fourth embodiment, the second magnet 310b is not a permanent magnet, whereas the fourth embodiment is provided with an electromagnet in the coupling yoke portion 330. The difference is that an electromagnet consisting of a coil 340 is provided. Even in such a case, the number of magnetic fluxes flowing through the magnetic circuit (i.e., It becomes possible to increase or decrease the magnetic attraction force.

Note that in FIG. 11, the first magnet 310a is a permanent magnet, but the first magnet 310a may be an electromagnet, or even if the first magnet 310a is omitted and only the first yoke is used, the electromagnet of the second magnet 310b By controlling the direction of the current flowing through the coil 340 that constitutes the magnetic attraction force, it is possible to increase or decrease the magnetic attraction force.

Note that when the first magnet 310a is not provided with a magnet and only the first yoke 320a is used, the number of magnetic fluxes flowing through the magnetic circuit is the product of the current flowing through the coil 340 and the number of turns of the coil 340, and the second yoke 320b. It is determined by the magnetic properties of the steel material used. When the second magnet 310b is not provided with a magnet, and when no current is passed through the coil 340 of the second magnet 310b, the number of magnetic fluxes is zero and no magnetic attraction force is generated. By doing so, it is possible to generate magnetic attraction force on the construction tool 400 only when the situation requires it, which is useful in that it is possible to prevent accidents caused by unnecessary generation of magnetic attraction force. be.

(Embodiment 5)
FIG. 12 is a diagram for explaining Embodiment 5 of the present invention. As shown in FIG. 12, the construction tool 500 of Embodiment 5 provides a third yoke 320c between the first yoke 320a and the second yoke 320b, and winds the coil 340 around the tip of the third yoke 320c to create an electromagnet. The magnetic pole of the first magnet 310a and the magnetic pole of the second magnet 310b have the same polarity, and the magnetic pole of the third magnet 310c has the same polarity as the first magnet 310a and the second magnet 310b. are characterized by having different polarities.

In such a construction tool 500, when no current is passed through the electromagnetic coil 340 of the third magnet 310c, no magnetic attraction force is generated by the third magnet 310c. Furthermore, since the magnetic poles of the first magnet 310a and the second magnet 310b have the same polarity, a magnetic circuit according to the present invention is not formed, so the magnetic attraction force in the first magnet 310a and the second magnet 310b is small. .

When a current is passed through the coil 340 that constitutes the electromagnet of the third magnet 310c so that the tip of the electromagnet becomes the north pole, the magnetic flux generated from the north pole of the electromagnet jumps into the soft magnetic body 10 via the nonmagnetic body 20. , inside the soft magnetic body 10 in the left and right directions in FIG. The magnetic flux that has reached the S pole passes through the first yoke 320a, the second yoke 320b, the coupling yoke portion 330, and the third yoke 320c, and returns to the third magnet 310c, forming a magnetic circuit. As a result, two magnetic circuits can be formed compared to the one magnetic circuit shown in FIG. 11, and it is possible to obtain approximately twice the magnetic attraction force as compared to the case of FIG.

(Modification 1 of Embodiment 5)
FIG. 13 is a diagram for explaining a construction tool 600 according to a first modification of the fifth embodiment shown in FIG. 12. As shown in FIG. 13, the construction tool 600 of the first modification of the fifth embodiment has a first magnet 310a and a permanent magnet at the tips of the first yoke 320a and the second yoke 320b, respectively. The second yoke 310b is a permanent magnet, whereas the first yoke 320a and the second yoke 320b have no magnets at their tips.

In this construction tool 600, when no current is passed through the electromagnetic coil 340 constituting the third magnet 310c, no magnetic attraction force is generated in the construction tool 600 as a whole. In contrast, by passing a current through the electromagnet coil 340 constituting the third magnet 310c so that a magnetic pole (for example, the N pole in the case shown in FIG. 13) is generated at the tip of the magnet, the electric current emitted from the N pole of the electromagnet The magnetic flux jumps into the soft magnetic body 10 via the non-magnetic body 20, and is divided into the left and right directions in FIG. A magnetic circuit is formed that passes through the third yoke 320c and returns to the third magnet 310c via the portion 330. As a result, two magnetic circuits can be formed compared to the one magnetic circuit shown in FIG. 11, and it is possible to obtain approximately twice the magnetic attraction force as compared to the case of FIG. Note that the construction tool 500 of the fifth embodiment shown in FIG. 12 has less leakage of magnetic flux and can obtain a stronger magnetic attraction force than the construction tool 600 of the first modification shown in FIG. 13.

In addition, in the fifth embodiment and the first modification of the fifth embodiment, the number of magnetic fluxes emitted from the permanent magnet that is the first magnet 310a and the number of magnetic fluxes emitted from the permanent magnet that is the second magnet 310b are not leaked. In order to form a magnetic circuit, the number of magnetic fluxes emitted by the electromagnet provided in the third magnet 310c is equal to the number of magnetic fluxes emitted from the permanent magnet, which is the first magnet 310a, and the number of magnetic fluxes emitted from the permanent magnet, which is the second magnet 310b. It is necessary to increase the total number of magnetic fluxes. Therefore, the weight of the electromagnet is required to be high, so it is particularly useful when attaching to a robot hand to automate work rather than manual construction.

At construction sites where the position of the soft magnetic material can be accurately determined, robots can easily move construction equipment even with heavy construction equipment to the designated position, and it is also possible to energize the coil and Since it is easy to control the release in conjunction with the movement, it is possible to achieve accurate and consistent construction.

(Embodiment 6)
FIG. 14 is a diagram for explaining Embodiment 6 of the present invention. As shown in FIG. 14, the construction tool 700 of the sixth embodiment is different from the construction tool 500 of the fifth embodiment in that a fourth yoke 320d is provided between the third yoke 320c and the first yoke 320a or the second yoke 320b. , a fourth magnet 310d constituting an electromagnet having a coil 342 is provided at the tip of the fourth yoke 320d, and the magnetic poles of the first permanent magnet 310a and the second permanent magnet 310b are made to have different polarities, The difference is that the magnetic pole of the electromagnet that is the third magnet 310c and the magnetic pole of the electromagnet that is the fourth magnet 310d are different in polarity.

In this construction tool 700, when no current is applied to the coil 341 that is the electromagnet of the third magnet 310c and the coil 342 that is the electromagnet of the fourth magnet 310d, the first magnet 310a is A magnetic circuit is formed between the S pole (or N pole) of the permanent magnet that is the second magnet 310b and the N pole (or S pole) of the permanent magnet that is the second magnet 310b.

On the other hand, by setting the magnetic pole of the electromagnet placed next to the S pole of the permanent magnet as the N pole, and setting the magnetic pole of the electromagnet placed next to the N pole of the permanent magnet as the S pole, the first magnet 310a and the second It is possible to configure three magnetic circuits: a magnetic circuit between the magnet 310b, a magnetic circuit between the first magnet 310a and the third magnet 310c, and a magnetic circuit between the second magnet 310b and the fourth magnet 310d. Become.

(Example 1)
Embodiment 1 of the construction tool according to the present invention is shown.

The first magnet and the second magnet are neodymium magnets with a size of 50.2 mm x 50.2 mm and a thickness of 25.4 mm in the part that contacts the non-magnetic material.According to the manufacturer's technical data, the magnetic force is approximately 480 mT, and the magnet is attracted The force is approximately 784N.

The first yoke and the second yoke are made of steel and have a portion that contacts the magnet measuring 50.2 mm x 50.2 mm and a distance from the tip to the rear end of 30 mm.

The joint yoke portion is made of steel and has a total length (distance between the end connected to the first yoke and the end connected to the second yoke) of approximately 203 mm and a thickness of approximately 20 mm.

Moreover, the first magnet and the second magnet are each housed in an aluminum hollow casing.

By using a construction tool having these configurations, it was possible to magnetically adsorb a gypsum board of the following thickness to a base steel material of 0.8 mm thickness with a pressing force of 1 kgf or more using the magnetic force of the construction tool. Ta.

For example, when the gypsum board thickness was 8.3 mm, the pressing force was 14.25 kgf.

When the gypsum board thickness was 9.8 mm, the pressing force was 13.05 kgf.

When the gypsum board thickness was 15.0 mm, the pressing force was 9.30 kgf.

When the gypsum board thickness was 19.6 mm, the pressing force was 7.75 kgf.

In either case, the gypsum board was able to be magnetically adsorbed to the underlying steel material with a large pressing force of 1 kgf or more.

As mentioned above, although the present invention has been illustrated using the preferred embodiment of the present invention, the present invention should not be interpreted as being limited to this embodiment. It is understood that the invention is to be construed in scope only by the claims. It will be understood that those skilled in the art will be able to implement the present invention to an equivalent extent based on the description of the present invention and common general technical knowledge from the description of the specific preferred embodiments of the present invention.

The present invention can reduce manual work time and labor in the work of fixing a non-magnetic material to a soft magnetic material, and also eliminates worker skill level and work unevenness to enable accurate and reliable construction. This is useful as a new construction tool that generates pressing force using magnetic force. It is also useful as a construction tool suitable for automation of work by robots.

10 Soft magnetic material (substrate steel material)
20, 21, 22 Non-magnetic material (plate-like material)
30 Tape-shaped solid adhesive 100, 101, 102, 200, 250, 300, 400, 500, 600, 700 Construction equipment 110a, 210a, 310a First magnet 110b, 210b, 310b Second magnet 310c Third magnet 310d Fourth Magnet 120a, 220a, 320a First yoke 120b, 220b, 320b Second yoke 320c Third yoke 320d Fourth yoke 340, 341, 342 Coil 130, 230, 330 Coupling yoke portion 140, 240 Casing 140a First casing 140b Second Casing 141, 141a, 141b, 241 Main body 142, 142a, 142b, 242 Lid 143, 143a, 143b, 243 Screw 230a Auxiliary handle 241a Lower edge

Claims (21)

A construction tool for fixing a non-magnetic material to a soft magnetic material,
a first magnetic attraction part that generates magnetic force;
a second yoke spaced apart from the first magnetic attraction part;
a coupling yoke portion that magnetically couples the first magnetic attraction portion and the second yoke;
A construction tool, wherein tip surfaces of the first magnetic adsorption portion and the second yoke are respectively configured to abut on the non-magnetic material. The thickness between the first magnetic adsorption portion of the coupling yoke portion and the surface of the coupling yoke portion that abuts the rear end surface of the second yoke is set to be thicker than the thickness of the non-magnetic material. The construction tool according to claim 1. The construction tool according to claim 1 or 2, wherein the distance between the first magnetic attraction part and the second yoke is set to be larger than the thickness of the non-magnetic material. 4. The construction tool according to claim 2, wherein the first magnetic attraction part, the second yoke, the coupling yoke part, and the soft magnetic body form a magnetic circuit via the nonmagnetic body. The construction equipment that makes up the. A construction tool for fixing a non-magnetic material to a soft magnetic material,
a first magnetic attraction part that generates magnetic force;
a second yoke spaced apart from the first magnetic attraction part;
a coupling yoke portion that magnetically couples the first magnetic attraction portion and the second yoke;
a first yoke between the first magnetic attraction part and the coupling yoke part;
A second magnetic attraction part is arranged at the tip of the second yoke,
The first magnetic attraction part and the second magnetic attraction part have different magnetic poles,
A construction tool having a space between the first yoke and the second yoke, and the connecting yoke portion functioning as a gripping portion. The construction tool has a magnetic force adjustment mechanism,
The construction tool according to claim 5, wherein the magnetic force adjustment mechanism configures the coupling yoke portion to be rotatable about an axis perpendicular to an attraction surface of the first magnetic attraction portion with respect to the first yoke. The construction tool according to claim 5 , wherein the first magnetic attraction part and the second magnetic attraction part are comprised of at least one of a permanent magnet and an electromagnet. The construction tool according to claim 1 or 5 , wherein the coupling yoke section includes an auxiliary magnetic attraction section including an electromagnet. The construction tool according to claim 5, wherein a third magnetic attraction part that generates magnetic force is disposed in the coupling yoke part between the first magnetic attraction part and the second magnetic attraction part. The first magnetic attraction part, the third magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a first magnetic circuit via the nonmagnetic body,
The second magnetic attraction part, the third magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a second magnetic circuit via the nonmagnetic body. Construction equipment. The first magnetic attraction part and the second magnetic attraction part are each permanent magnets,
The construction tool according to claim 9 , wherein the third magnetic attraction part is an electromagnet. The coupling yoke part includes a fourth magnetic force that generates a magnetic force between the first magnetic attraction part and the third magnetic attraction part or between the second magnetic attraction part and the third magnetic attraction part. The construction tool according to claim 9 , wherein a suction part is arranged. The first magnetic attraction part, the second magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a first magnetic circuit via the nonmagnetic body,
The first magnetic attraction part, the third magnetic attraction part or the fourth magnetic attraction part adjacent to the first magnetic attraction part, the coupling yoke part, and the soft magnetic material are arranged so that the non-magnetic material configuring a second magnetic circuit through the
The second magnetic attraction part, the fourth magnetic attraction part or the third magnetic attraction part adjacent to the second magnetic attraction part, the coupling yoke part, and the soft magnetic material are arranged so that the non-magnetic material 13. The construction tool according to claim 12, comprising a third magnetic circuit via the construction tool. The construction tool according to claim 1 or 5, further comprising a casing made of a non-magnetic material that houses the first magnetic attraction part. 15. The construction tool according to claim 14, wherein the casing has a lower edge having an arcuate curved portion in order to easily separate the construction tool from the surface of the non-magnetic material. A control mechanism that controls the pressing force of the first magnetic attraction part, the second magnetic attraction part, the third magnetic attraction part, and/or the fourth magnetic attraction part against the soft magnetic material via the nonmagnetic material. The construction tool according to claim 12 or 13, comprising: A construction tool for fixing a non-magnetic material to a soft magnetic material,
a first yoke;
a second yoke spaced apart from the first yoke;
a coupling yoke portion that magnetically couples the first yoke and the second yoke;
The coupling yoke portion includes a magnetic adsorption portion including an electromagnet that generates magnetic force between the first yoke and the second yoke,
The thickness between the surfaces of the first yoke and the second yoke that come into contact with the non-magnetic material and the surface of the coupling yoke part that comes into contact with the first yoke and the second yoke, A construction tool configured to be thicker than the non-magnetic material. The construction tool according to claim 17,
The first yoke, the magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a first magnetic circuit via the nonmagnetic body,
The construction tool, wherein the second yoke, the magnetic attraction part, the coupling yoke part, and the soft magnetic body constitute a second magnetic circuit via the nonmagnetic body. A method for designing a construction tool for fixing a non-magnetic material to a soft magnetic material, the method comprising:
The construction tool includes a first magnetic attraction part that generates magnetic force;
a second yoke spaced apart from the first magnetic attraction part;
a coupling yoke portion that magnetically couples the first magnetic attraction portion and the second yoke;
A front end surface of the first magnetic attraction part and the second yoke that comes into contact with the non-magnetic material, and a surface of the coupling yoke part that comes into contact with the rear end surface of the first magnetic attraction part and the second yoke. A design method in which the thickness between the non-magnetic material and the non-magnetic material is set to be thicker than the thickness of the non-magnetic material. A method for designing a construction tool for fixing a non-magnetic material to a soft magnetic material, the method comprising:
a first magnetic attraction part that generates magnetic force;
a second yoke spaced apart from the first magnetic attraction part;
a coupling yoke portion that magnetically couples the first magnetic attraction portion and the second yoke;
A design method, wherein the distance between the first magnetic attraction part and the second yoke is set to be larger than the thickness of the non-magnetic material. A method for designing a construction tool for fixing a non-magnetic material to a soft magnetic material, the method comprising:
a first yoke;
a second yoke spaced apart from the first yoke;
a coupling yoke portion that magnetically couples the first yoke and the second yoke;
The coupling yoke portion includes a magnetic adsorption portion including an electromagnet that generates magnetic force between the first yoke and the second yoke,
A design method, wherein the distance between the first yoke and the second yoke is set to be larger than the thickness of the non-magnetic material.

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