JP7706090B2 - Handheld Functional Instruments - Google Patents

Description

The present invention relates to a handheld functional device. More specifically, the present invention relates to a handheld functional device having a functional device body with a functional surface on the bottom surface and a handle integrated with the functional device body, and the handheld functional device has improved safety of the functional surface.

One example of a handheld functional device having a functional device main body with a functional surface on the bottom surface and a handle integrated with the functional device main body is the temporary handle of Patent Document 1. As shown in FIG. 11, this temporary handle 90 has a base member 91 and a grip 92. The base member 91 is adapted to be detachably attached to a lifted object 93 made of a metal having magnetic attractiveness. The grip 92 is a handle that is disposed on the base member 91 and can be held with at least one hand. In other words, the bottom surface of the base member 91 functions as a magnetically attractive surface.

When using this temporary handle 90 to sling a lifted object 93 such as a steel plate, the temporary handle 90 is magnetically attracted to the surface 94 of the lifted object 93, and then the lifted object 93 is hoisted by a ceiling crane (not shown) and a wire 95. In this case, the temporary handle 90 is attached to the lifted object 93 by attracting the magnetic attraction portion (magnetic attraction surface) 96 on the bottom surface of the base member 91 of the temporary handle 90 to the surface 94 of the lifted object 93.

The temporary handle 90 attached to the surface 94 of the lifted object 93 is integrated with the lifted object 93, so that when an operator holds the grip 92 of the temporary handle 90 with his or her hand, the operator can easily maintain the posture of the lifted object 93 in a constant state and position the lifted object 93 when it lands on the ground, at the operator's discretion. In this way, by using the temporary handle 90 in slinging work, the operator can easily and safely adjust the posture and landing position of the lifted object 93 without touching the lifted object 93 or the wire 95.

Utility Model Registration No. 3212882

However, since the magnetic attraction portion 96 of the temporary handle 90 is always exposed when not in use, it may inadvertently be attracted to a nearby metal plate or tool. In particular, if the magnetic force of the magnetic attraction portion 96 is strong, injury may occur if a hand or finger is caught between the magnetic attraction portion 96 and the object being attracted. This problem is not limited to the temporary handle with the magnetic attraction surface as the functional surface, but also applies to, for example, an iron whose functional surface generates high heat.

The present invention was made in consideration of the above-mentioned problems, and aims to provide a handheld functional device that has a functional device body with a functional surface on the bottom surface and a handle integrated with the functional device body, and that can prevent unexpected accidents caused by the functional surface.

The present invention takes the following measures to solve the above problems. Note that the reference characters in parentheses attached to each component means in this section (the "Means for solving the problems" section) are for reference purposes only to show the corresponding relationship with the specific means described in the embodiments described below, and do not limit the component means of the present invention to these.

One aspect of the present invention is a handheld functional device (1) having a functional device body (2) with a functional surface (16) on the bottom surface and a handle (30) integrated with the functional device body (2), characterized in that the functional device body (1) is provided with a pair of left and right protective blocks (60, 60) that are pivotally supported around the axes (52, 52) of the hinges (50, 50) provided at the left and right ends of the functional device body (2) and that can be opened and closed like a double door from the functional surface (16) and selectively positioned between a closed position (P1, P1) in which the functional surface (16) is covered and an open position (P2, P2) in which the functional surface (16) is exposed.

According to this embodiment, when the handheld functional device (1) is in use, the pair of left and right protective blocks (60, 60) are placed in the open position (P2, P2), respectively, so that the functional surface (16) of the functional device main body (2) can be exposed. Also, when the handheld functional device (1) is not in use, the pair of left and right protective blocks (60, 60) are placed in the closed position (P1, P1), respectively, so that the functional surface (16) of the functional device main body (2) can be covered and placed in an unexposed state. In other words, the functional surface (16) can be placed in an unexposed state except when the device is in use, and unexpected accidents caused by the functional surface (16) can be prevented.

In another aspect of the present invention, the rotation angle (θ) when one of the pair of left and right protective blocks (60, 60) is moved from the closed position (P1) to the open position (P2), and the rotation angle (θ) when the other protective block (60) is moved from the closed position (P1) to the open position (P2) are 180 degrees in the clockwise direction and 180 degrees in the counterclockwise direction, respectively.

According to this embodiment, when the functional surface (16) is used, i.e., when it is in the open position (P2), the protective blocks (60, 60) do not interfere with the object, so workability during use is good.

In another aspect of the present invention, fixing members (71, 72) are provided to fix the pair of left and right protective blocks (60, 60) in fixed positions in the open position (P2, P2) and the closed position (P1, P1), respectively.

According to this embodiment, the pair of left and right protective blocks (60, 60) are fixed in a fixed position in the open position (P2, P2), which provides good operability during use. In addition, since they are fixed in a fixed position in the closed position (P1, P1), the safety of the functional aspects (16) can be continuously ensured.

In another aspect of the present invention, a pair of left and right protective blocks (60, 60) rotatably supported by a hinge (50) around the axis (52) of the hinge (50) have fixing parts (40) for removably fixing the pair of left and right protective blocks (60, 60) to the left and right ends of the functional device main body (2) without tools.

According to this embodiment, it is possible to ensure the safety of the functional surface (16) without changing the structure of the existing functional device body (2).

In another aspect of the invention, the functional surface (16) is a magnetically attractive surface.

According to the present invention, a handheld functional device is provided that has a functional device body with a functional surface on the bottom surface and a handle that is integrated with the functional device body, and that can prevent unexpected accidents caused by the functional surface.

1 is an external perspective view of a magnetic attachment type installation tool according to the present invention; 11 is a perspective view showing a state in which the main body has been detached from the safety device in the installation tool. FIG. FIG. FIG. 10A and 10B are diagrams for explaining the arrangement of protection blocks in a safety device. FIG. 11 is a perspective view for explaining a method of using the installation tool. FIG. 4 is a side cross-sectional view showing a magnetic circuit formed between the construction tool and a steel frame. FIG. 13 is a perspective view showing a safety device of a first modified example. FIG. 11 is a perspective view showing a safety device of a second modified example. FIG. 11 is a perspective view showing a state in which a safety device of a second modified example is attached to a main body. 1 is a schematic diagram of a conventional handheld functional device.

Below, an embodiment of the present invention will be described with reference to the attached drawings. Note that in this specification, "magnetic adhesion" may be referred to simply as "magnetic adhesion."

Figure 1 is an external perspective view of a magnetic installation tool 1 according to the present invention, and Figure 2 is a perspective view showing the state in which the main body 2 has been detached from the safety device 3 in the installation tool 1. Figure 3 is a three-sided view of the main body 2, where (a) is a front cross-sectional view (cross-sectional view along line A-A in Figure 2), (b) is a plan view, and (c) is a side view. Figure 4 is a three-sided view of the safety device 3, where (a) is a front view, (b) is a plan view, and (c) is a side view. Figure 5 is a diagram for explaining the arrangement of the protection block 60 in the safety device 3, where (a) is a side view when the protection block 60 is in the closed position P1, (b) is a side view when the protection block 60 is in the open position P2, and (c) is a perspective view when the protection block 60 is in the open position P2.

As shown in Figure 1, the magnetic construction tool 1 according to the present invention has a main body 2 and a safety device 3. As shown in Figure 2, the main body 2 and the safety device 3 can be attached and detached freely without using tools. The construction tool 1 is used when constructing a non-magnetic wall material 6 on a steel frame 4 via a special adhesive 5, as shown in Figure 6 described below.

As shown in Figures 2 and 3, the main body 2 comprises a casing 10, a pair of permanent magnets 20, 20 arranged inside the casing 10, and a handle 30 provided integrally with the casing 10 on the top of the casing 10.

[Casing]
3, the casing 10 is a hollow rectangular box made of a non-magnetic material such as aluminum or synthetic resin, and includes a box-shaped casing body 11 with an open top, and a lid 12 that closes the opening of the casing body 11. The lid 12 has bolt holes 121 that penetrate in the thickness direction on both sides in the longitudinal direction, and screw holes 122 at the four corners. The casing body 11 and the lid 12 have a thickness that allows the magnetic flux of the internal permanent magnet 20 to pass sufficiently, for example, about 1 to 3 mm.

[Permanent magnet]
The permanent magnets 20 are made of block-shaped neodymium magnets with a north pole on one side and a south pole on the opposite side, and with a bolt hole 21 that penetrates through the thickness direction in the center. The permanent magnets 20 are arranged symmetrically on both sides in the longitudinal direction within the casing body 11, with a gap between them. One permanent magnet 20 is fixedly arranged with its north pole facing the bottom, and the other permanent magnet 20 is fixedly arranged with its south pole facing the bottom.

〔handle〕
The handle 30 has two base yokes 31, 31 and a connecting yoke 32. The base yoke 31 is a block-shaped dense body with a bolt hole 311 at the center that penetrates in the thickness direction. The connecting yoke 32 is a rectangular parallelepiped dense body with bolt holes 321, 321 that penetrate in the thickness direction on both longitudinal sides. Both are made of a magnetic metal, for example, ferritic stainless steel SUS434 or steel.
The handle 30 is configured by connecting two base yokes 31, 31 with a connecting yoke 32. Specifically, the connecting yoke 32 connects the two base yokes 31, 31 arranged at a distance from each other in a manner that bridges them, and its shape when viewed from the front is a U-shape rotated 90 degrees counterclockwise.

The components shown above are arranged on both the left and right sides in the order of permanent magnet 20, lid 12, base yoke 31, and connecting yoke 32 from the bottom, so that the bolt holes 21, 121, 311, and 321 are coaxial, and then countersunk bolts 14 are inserted into the bolt holes and fastened with nuts 15. The lid 12 is then fixed to the casing body 11 with screws 13 inserted into the screw holes 122 of the lid 12 to complete the assembly. The main body 2 assembled in this way has a strong magnetic attraction surface 16 at the bottom of the casing 10 due to the permanent magnets 20, 20 inside the casing 10.

[Safety device]
2 and 4, the safety device 3 includes a fixed portion 40, hinges 50, 50, and protective blocks 60, 60. The hinges 50 and the protective blocks 60 are provided symmetrically on the left and right sides of the fixed portion 40 when viewed from the side, as shown in Fig. 4(c).

[Fixed part]
As shown in FIG. 4B, the fixing portion 40 includes an elastic band 41 and a side plate 42.
The elastic band 41 is a ring-shaped rubber band (flexible and endless) that is sized to surround the four sides of the casing 10 of the main body 2 and be fastened by elastic contraction force. More specifically, it is made of flat rubber about 1 to 3 mm thick, and its vertical width is slightly shorter than that of the casing 10. Furthermore, its overall circumferential length is slightly shorter than the peripheral length of the casing 10 when not stretched and expanded against elasticity. It is made of materials such as silicone rubber, synthetic rubber, and natural rubber. A cloth rubber band formed into a ring shape may also be used.

The side plate 42 is a rectangular flexible flat plate made of magnetic metal, and its size is the same as the elastic band 41 in terms of vertical width and the same as the longitudinal length of the casing 10 in terms of horizontal width. For example, it is a sheet steel with a thickness of about 0.2 to 0.5 mm cut into the above shape. The two side plates 42, 42 are fixed to both sides of the elastic band 41 so as to be mirror images. In other words, the center distance along the elastic band 41 between the center of one side plate 42 of the two side plates 42, 42 and the center of the other side plate 42 is equal on the left and right or above and below the endless ring-shaped elastic band 41. In other words, it is equal whether measured clockwise or counterclockwise. The fixing is performed, for example, by adhering one side of the sheet steel to the front side of the elastic band 41 with an adhesive.

[Hinge]
A hinge 50 is attached to the center of the side plate 42 in the longitudinal direction.
The hinge 50 is made up of, for example, a pair of plastic hinge pieces 51, 51 and an iron core rod 52. The pair of hinge pieces 51, 51 are symmetrical to each other, so only one of them will be described. The hinge piece 51 is made up of a flat plate portion 53 and a cylindrical portion 54, as shown in FIG.
The cylindrical portion 54 protrudes from one end surface side of the flat plate portion 53 and is formed integrally with the flat plate portion 53, and is a portion that allows the core rod 52 to be inserted coaxially through each of the pair of hinge pieces 51, 51. With this configuration, the hinge 50 alone is capable of rotating one hinge piece 51 360 degrees relative to the other hinge piece 51 with the core rod 52 as an axis. In other words, the angle φ between one hinge piece 51 and the other hinge piece 51 is 0 to 360 degrees.

[Protection block]
The protective block 60 is a member that covers the magnetic surface 16 of the main body 2 when the main body 2 is not in use to prevent danger caused by the magnetic force emanating from the magnetic surface 16, and is made of a non-magnetic dense rectangular parallelepiped body. The material is preferably a lightweight and soft material such as polyurethane, polystyrene, or synthetic rubber, and a foam material may also be used.

The protective block 60 and the side plate 42 are connected by the hinge 50 in the following manner (see FIG. 4(c)). That is, of the pair of hinge pieces 51, 51, one hinge piece 51 is fixed to the side plate 42 at the longitudinal center position of the side plate 42 via an adhesive on the back surface of the hinge piece 51. The other hinge piece 51 is fixed to the side surface 62 of the protective block 60 at the longitudinal center position of the protective block 60 via an adhesive on the back surface of the hinge piece 51. More specifically, the surface of the side plate 42 at the fixed portion 40, which is opened in a rectangular shape corresponding to the magnetic surface 16 of the main body 2, and the side surface 62 of the protective block 60 are connected to the hinge 50 with an angle φ of 180 degrees in a state where they are almost flush with each other.

With this configuration, the protective block 60 can rotate 180 degrees relative to the side plate 42 with the core rod 52 of the hinge 50 as an axis (see FIG. 5(b)). In other words, when the fixing part 40 is attached to the main body 2, the protective blocks 60, 60 are supported rotatably around the axis of the core rod 52 by the hinges 50, 50 provided at the left and right ends of the main body 2, respectively, and the magnetic surface 16 on the main body 2 can be selectively switched between a covered state and an exposed state, as described below.

Here, the state in which the left and right protective blocks 60, 60 are rotated 180 degrees clockwise (rotation angle θ = -180 degrees) and 180 degrees counterclockwise (rotation angle θ = 180 degrees) with respect to when they are directly below the fixed part 40 is defined as the "open position P2" (see FIG. 5(b)), and the state in which the protective blocks 60, 60 are not rotated (rotation angle θ = 0 degrees) is defined as the "closed position P1" (see FIG. 5(a)). In the open position P2, when the fixed part 40 is attached to the main body 2, the magnetized surface 16 of the main body 2 is exposed, and in the closed position P1, the magnetized surface 16 is covered.

The area of the upper surface 61 of the protective block 60 is preferably large enough to cover at least 90 percent of the magnetic surface 16 of the main body 2 when the fixing part 40 is attached to the main body 2 and in the closed position P1, as the total area of the two protective blocks 60, 60. This is to improve the stability of the construction tool 1 when it is placed on a horizontal surface, for example, and to prevent magnetic parts, etc. from entering through the gap 63 (see Figure 4 (c)) between the two protective blocks 60, 60 and being attracted to the magnetic surface 16. In addition, by using a soft material, it is possible to soften the impact when magnetically attracted to an unintended magnetic body.

[Magnetic sheet piece]
Magnet sheet pieces 71, 71 are attached at a certain distance on both sides of the hinges 50, 50 provided in the center of the side surfaces 62, 62 of the protective blocks 60, 60. These magnet sheet pieces 71, 71 are for magnetically attaching the protective blocks 60, 60 to the side plates 42, 42 when the protective blocks 60, 60 are in the open positions P2, P2.
Furthermore, magnetic sheet pieces 72 are attached to both longitudinal sides of the upper surfaces 61 of the protective blocks 60. The magnetic sheet pieces 72 are for magnetically attaching to the magnetic attachment surface 16 of the main body 2 when the fixing part 40 is attached to the main body 2 with the protective blocks 60 in the closed positions P1.

Next, a method of using the magnetic attachment type construction tool 1 will be described.
FIG. 6 is a perspective view for explaining a method of using the construction tool 1, and FIG. 7 is a side sectional view showing a magnetic circuit formed between the construction tool 1 and a steel frame 4. As shown in FIG.

The work described below is specifically the work of attaching a gypsum board 6, which acts as a non-magnetic material, to a steel frame 4, which acts as a base steel material, using a special adhesive 5. This special adhesive 5 is an adhesive that has the property of increasing its adhesive strength in a short period of time when a certain pressure is applied, and in this case is a double-sided adhesive tape type.

First, as shown in Figure 6(a), a gypsum board 6 is placed on top of a steel frame 4 with a special adhesive 5 applied to its surface. This causes the gypsum board 6 to adhere to the special adhesive 5, and as shown in Figure 6(b), the gypsum board 6 is temporarily attached to the steel frame 4.

In this temporary fixing state, the construction tool 1 is prepared. When the construction tool 1 is stored in a special case or the like, the protective block 60 is in the closed position P1, so the construction tool 1 is in the open position P2 (see FIG. 5(c)). In the open position P2, the magnetic sheet pieces 71, 71 are magnetically attached to the side plates 42, 42, and the protective blocks 60, 60 are fixed in place. Then, as shown in FIG. 6(c), the magnetically attached surface 16 of the construction tool 1 is brought close to the gypsum board 6 and placed on the part of the surface of the gypsum board 6 where the steel frame 4 is present. At this time, as shown in FIG. 7, one permanent magnet 20 of the construction tool 1, one base yoke 31, the connecting yoke 32, the other base yoke 31, the other permanent magnet 20, and the steel frame 4 form a magnetic circuit through which the magnetic flux MF with high magnetic flux density passes. This is a magnetic circuit with the thickness of the gypsum board 6 as an air gap. As a result, the construction tool 1 is magnetically attracted to the steel frame 4 with great force, making it possible to press the gypsum board 6 against the steel frame 4 with a strong pressing force.

In this state, by moving the construction tool 1 downward as shown by the arrow in Figure 6 (c), the area in which the construction tool 1 presses the gypsum board 6 against the steel frame 4 moves along the steel frame 4.

As a result, the part of the gypsum board 6 that faces the steel frame 4 via the special adhesive 5 is pressed with an even and strong pressure, and the gypsum board 6 is permanently attached to one steel frame 4 by the special adhesive 5.

Then, the plasterboard 6 is pressed down against the steel frame 4 next to the one to which the plasterboard 6 has been attached. By repeating this process, the plasterboard 6 is attached to the steel frame 4.

After completing the series of operations, the protective blocks 60, 60 are returned to the closed position P1, P1 and placed in a special case, etc. In the closed position P1, P1, the magnetic sheet pieces 72, 72 are magnetically attached to the magnetic surface 16, and the protective blocks 60, 60 are fixed in place.

In this way, when the construction tool 1 presses the gypsum board 6 against the steel frame 4, a large pressing force can be generated by the magnetic force even if the steel frame 4 is far away. Furthermore, when the construction tool 1 is not in use, the two protective blocks 60, 60 are placed in the closed positions P1, P1 to cover the magnetic surface 16, and only when the construction tool 1 is in use, the two protective blocks 60, 60 are placed in the open positions P2, P2 to expose the magnetic surface 16, thereby preventing unexpected accidents caused by the magnetic surface 16.

The pair of left and right protective blocks 60 are fixed in place in the open position P2 by magnetically attaching the magnetic sheet pieces 71, 71 to the side plates 42, 42, making them easy to work with. Also, in the closed position P1, the magnetic sheet pieces 72, 72 are magnetically attached to the magnetic surface 16, making them fixed in place, ensuring the safety of the functional surface 16 on an ongoing basis.

In addition, with the construction tool 1, the main body 2 and the safety device 3 can be attached and detached without the use of tools, so the safety of the functional surface 16 can be ensured without changing the structure of the existing main body 2. In addition, the elastic band 41 can be used to securely fix the main body 2 to the casing 10. The elastic band 41 is stretchable, so it can be applied to casings 10 of different sizes. It is also possible to fix the safety device 3 integrally to the side of the casing main body 11 with screws or the like, rather than making it detachable.

[Safety Device of First Modification]
FIG. 8 is a perspective view showing a safety device 3A of a first modified example.
The safety device 3A of the first modified example has a flat cylinder 42A instead of the side plate 42 in the safety device 3. The other configurations are similar to those of the safety device 3.
The flat cylinder 42A is a rectangular body made of a magnetic metal, like the side plate 42, but has a space S1 therein through which the elastic band 41 can be inserted. The elastic band 41 passes through this space S1.

The flat tube 42A can be, for example, a wide side panel having a vertical width slightly more than twice that of the above-mentioned side panel 42, folded in half along a center line parallel to its longitudinal direction, and attached in a manner that clamps the elastic band 41 so that it can be inserted therethrough, with the open end opposite the fold sealed with adhesive.
In the safety device 3, the side plate 42 is adhesively fixed to the middle of the elastic band 41, and the elastic band 41 cannot expand or contract in its longitudinal direction at the portion where the side plate 42 is fixed, but in the safety device 3A, the elastic band 41 passes through the space S1 of the flat tube 42A and is not fixed integrally, so the elastic band 41 as a whole can expand or contract in its longitudinal direction. Therefore, the range of application of the safety device 3 to casings of different sizes is expanded.

[Second Modification Safety Device]
FIG. 9 is a perspective view showing a safety device 3B of the second modified example, and FIG. 10 is a perspective view showing a state in which the safety device 3B of the second modified example is attached to the main body 2. As shown in FIG.
In the safety device 3B of the second modification, the fixing portion 40 does not have the elastic band 41 with respect to the safety device 3. Since the side surface of the casing 10 has a strong magnetic force due to the internal permanent magnet 20, the side plate 42 is directly magnetically attached to the side surface of the casing 10. The safety device 3B of the second modification has two separate bodies that are independent of each other, but the number of parts is reduced by the absence of the elastic band 41.

Although the embodiments of the present invention have been described above, the embodiments disclosed above are merely examples, and the scope of the present invention is not limited to these embodiments. The scope of the present invention is indicated by the description of the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.
That is, the structure, shape, material, number, mounting position, application, etc. of the whole or part of the magnetic attachment type construction tool 1 can be appropriately changed in accordance with the gist of the present invention. For example, the side plate 42 is made of sheet steel, but it may be made of a magnetic sheet.
In the above embodiment, a magnetic application tool is shown with the magnetic surface as the functional surface, but the functional surface may be applied to an iron or the like that generates high heat. In this case, it is preferable that the protective block is made of a material with excellent heat resistance, such as ceramic.

It can be widely used as a handheld functional device that can prevent unexpected accidents due to its functionality.

1. Installation tools (handheld functional tools)
2. Main body (functional device main body)
16 Magnetic attraction surface (functional surface)
30 Handle 50 Hinge 52 Core rod (shaft)
60: Protective block 71: Magnet sheet piece (fixing member)
72 Magnet sheet piece (fixing member)
P1 Closed position P2 Open position θ Rotation angle

Claims (5)

A handheld functional device having a functional device body with a functional surface on the bottom surface and a handle integrated with the functional device body, characterized in that the functional device body is supported by hinges provided at the left and right ends thereof so as to be rotatable about the axis of the hinge, and is equipped with a pair of left and right protective blocks that can be selectively positioned between a closed position in which the functional surface is covered and an open position in which the functional surface is exposed, opening and closing like a double door from the functional surface. The handheld functional device according to claim 1, in which the rotation angle when one of a pair of left and right protective blocks is moved from the closed position to the open position, and the rotation angle when the other protective block is moved from the closed position to the open position, are 180 degrees clockwise and 180 degrees counterclockwise, respectively. The handheld functional device according to claim 2, which is provided with fixing members that fix the pair of left and right protective blocks in fixed positions in the open and closed positions. The handheld functional device according to claim 3 has fixing parts for fixing a pair of left and right protective blocks supported by a hinge so as to be rotatable around the axis of the hinge to the left and right ends of the functional device body, and the fixing parts are detachable from the functional device body without tools. 5. The handheld functional device according to claim 1, wherein the functional surface is a magnetically attractive surface.

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