JP2021138518A - Magnet holder - Google Patents

Abstract

To provide a magnet holder with a small planar area by setting the motion in switching between an adsorption state and a non-adsorption state of an adsorption surface to the vertical motion in the planar area of the magnet holder.SOLUTION: A magnet holder 100 includes a cylindrical body 10, a rotary body 20 formed of a magnet to be rotatable in the cylindrical body 10, a main body 40 having a separator 30, and a motion conversion part 50 connected to the rotary body 20 to rotate the rotary body 20 by the vertical motion. The rotary body 20 is rotated inside the cylindrical body 10 by the motion conversion part 50 such that an adsorption state and a non-adsorption state are switched. The motion conversion part 50 includes an operation part 52 for performing the vertical motion and a connection part 56 connected to the rotary body 20. The operation part 52 is mounted with an operation piece 54 intersecting with the vertical motion. An operation piece entering part 58 is formed in a spiral shape in the height direction of the connection part 56 and makes the operation piece 54 enter the operation piece entering part 58 by the vertical motion of the operation part 52 so as to rotate the rotary body 20 together with the connection part 56.SELECTED DRAWING: Figure 1

Description

The present invention relates to a magnet holder.

Magnet holders used for lifting articles using magnetic force are known. As such a magnet holder, for example, a magnet holder having a configuration as disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2016-41622) is known.

Japanese Unexamined Patent Publication No. 2016-41622 (paragraphs 0021-0024 of the specification, FIGS. 2, 3, etc.)

As shown in FIG. 11, the magnet holder disclosed in Patent Document 1 is for switching between an attracted state and a non-adsorbed state of a magnetic adsorption surface (hereinafter, simply referred to as an adsorption surface) that adsorbs an object to be adsorbed. Since the rotary operation lever is provided, there is a problem that the flat area of the magnet holder becomes large.

Therefore, an object of the present invention is to solve the above-mentioned problems by changing the operation when switching between the suction state and the non-suction state of the suction surface to a vertical movement operation in the plane region of the magnet holder.

That is, in the present invention, a cylinder formed of a magnetic material, a rotating body formed of a magnet and rotatably housed inside the cylinder, and a separator arranged in the radial direction of the cylinder are provided. It is provided with a main body having the main body and a motion conversion unit which is connected to the rotating body and converts a vertical movement motion with respect to the main body into a rotational motion in a horizontal plane of the rotating body. It is a magnet holder provided so that the arrangement state of the magnetic poles of the rotating body can be switched and one end surface of the main body can be switched to a magnetically attractable suction state or a non-suction state. It has an operation unit for performing a moving operation and a connecting unit connected to the rotating body, and an operating piece extended in a direction intersecting the vertical movement operation is attached to the operating unit. An operation piece entry portion into which the operation piece enters is formed in a spiral shape in the connecting portion, and the operation piece enters the operation piece entry portion by the vertical movement operation of the operation portion. It is a magnet holder characterized in that the rotating body rotates inside the cylinder together with the connecting portion.

As a result, the operation for switching between the suction state and the non-suction state of the suction surface of the magnet holder can be performed by the vertical movement operation in the plane area of the magnet holder, so that the plane area of the magnet holder can be reduced. can.

Further, it has a case attached to the upper surface of the main body and capable of accommodating the connecting portion inside, and the case is formed with a guide portion for guiding the vertical movement operation of the operation piece in a non-rotating state. preferable.

As a result, when the operation unit is moved up and down, the operation piece does not rotate in the horizontal plane, so that the operation piece can be surely entered into the operation piece entry portion.

Further, it is preferable that a bearing is arranged between the case and the connecting portion.

As a result, it is possible to facilitate the operation when switching between the suction state and the non-suction state of the suction surface.

Further, it is preferable that the operation piece is attached to a plurality of places.

As a result, it is possible to prevent the magnet holder from changing its posture in the roll direction when switching between the suction state and the non-suction state of the suction surface by the operation unit.

Further, it is preferable that the operation portion is formed in a tubular body in which the outer peripheral surface of the main body is inscribed and the operation piece is attached to the inner side surface.

As a result, the user can switch between the attracted state and the non-adsorbed state simply by grasping the operating portion and moving (sliding) the operating portion up and down (sliding) in the height direction of the magnet holder.

Further, it is preferable that the operation unit has a shaft body extending in the direction of the vertical movement operation, and the operation piece is attached in a state of being crossed with the shaft body at the tip end portion of the shaft body.

As a result, the operation unit has a handle, and the operability when switching between the suction state and the non-suction state can be improved.

Further, it has a case attached to the upper surface of the main body and capable of accommodating the connecting portion inside, and biases the shaft body toward the connecting portion side between the case and the connecting portion. It is preferable that an urging member for the purpose is provided, and the operating portion is provided with an operating lever for separating the shaft body from the connecting portion against the urging force of the urging member. Is more preferable.

Thereby, either the suction state or the non-suction state can be set to the basic state of the suction surface, and a magnet holder having good usability can be provided. Further, it is possible to improve the operability when switching the suction surface from the basic state to another state.

According to the configuration of the magnet holder in the present invention, the motion conversion unit can convert the vertical motion in the height direction into the motion in the rotation direction in the horizontal plane. The operation at the time of switching can be set to the operation within the flat area of the magnet holder, and the flat area of the magnet holder can be reduced. In addition, it is possible to easily switch between the adsorption state and the non-adsorption state of the adsorption surface in the state where the adsorption target object is adsorbed.

It is an assembly perspective view of the magnet holder in 1st Embodiment. It is a perspective view and a partial perspective perspective view which shows the non-adsorption state of the magnet holder shown in FIG. FIG. 2 is a plan view of a main part of the main body of the magnet holder shown in FIG. 2 and a partially perspective front view. It is a perspective view and a partial perspective perspective view which shows the suction state of the magnet holder shown in FIG. FIG. 4 is a plan view of a main part of the main body of the magnet holder and a partial perspective front view. It is an assembly perspective view of the magnet holder in 2nd Embodiment. It is a perspective view and a partial perspective perspective view which shows the suction state of the magnet holder shown in FIG. It is a perspective view and a partial perspective perspective view which shows the non-adsorption state of the magnet holder shown in FIG. It is a perspective view which shows the modification of the magnet holder. It is a perspective view which shows the modification of the magnet holder. It is a perspective view of the magnet holder in the prior art.

(First Embodiment)
As shown in FIG. 1, the magnet holder 100 of the present embodiment is an operation of converting the vertical movement motion of the main body 40 having the tubular body 10, the rotating body 20 and the separator 30 and the vertical movement motion of the main body 40 into a rotary motion. It includes a conversion unit 50, a case 60, and a bearing 70. The user can switch between the suction state and the non-suction state of the suction surface of the magnet holder 100 by reciprocating the motion conversion unit 50 in the vertical direction.

The tubular body 10 is formed of a magnetic material such as iron. The rotating body 20 is formed by a magnet to have the same height as the tubular body 10, and is housed in the internal space of the tubular body 10 in a rotatable state. The rotating body 20 in the present embodiment is formed in a cylindrical body in which the wall surfaces of the chord portions of the two semi-cylindrical bodies 22 face each other, and an north pole and an south pole are formed in the diameter direction of the rotating body 20. A recess 24, which is a connecting portion with the connecting portion 56 described later, is formed on the upper surface of the rotating body 20, and the recess 24 extends in a direction orthogonal to the wall surface of the chord portion of the semi-cylindrical body 22. A bottom plate 26 (see FIG. 3) made of a non-magnetic material is attached to the bottom of the rotating body 20, and the bottom plate 26 forms a flat surface together with the bottom surface of the cylinder 10.

Further, a separator 30 is arranged on the tubular body 10. The plane positions of the separator 30 are arranged so as to face each other in the diameter direction of the cylinder 10, and are arranged over the entire range in the height direction of the cylinder 10. The separator 30 in the present embodiment is formed by a semicircular concave space opened on the inner peripheral surface of the tubular body 10, but adopts a form in which a non-magnetic material is arranged in the diameter direction of the tubular body 10. You can also do it. The bottom surface of the main body 40 of the magnet holder 100 in this embodiment is the suction surface.

The motion conversion unit 50 in the present embodiment is for converting the vertical motion of the main body 40 into a rotational motion in the horizontal plane of the rotating body 20, and is a recess of the operating unit 52 and the rotating body 20 operated by the user. It has a connecting portion 56 that can be connected to 24. The operation unit 52 in the present embodiment is formed in a cylindrical body inscribed with the outer peripheral surface of the main body 40, and is provided so as to be vertically movable (movable in the height direction) with respect to the main body 40. An operation piece 54 is attached to the inner surface of the operation unit 52 in the present embodiment in a plane intersecting the vertical movement of the operation unit 52. The operation piece 54 in the present embodiment has an outer peripheral surface of the operation piece holder 55 and an operation unit 52 at four locations on the outer peripheral surface of the upper portion of the operation piece holder 55 extending in the height direction at the plane center position of the operation unit 52. It is provided in a cross shape that connects to the inner peripheral surface of the. Further, the outer peripheral surface of the operation unit 52 can be subjected to a non-slip treatment such as knurling.

At the bottom of the connecting portion 56 formed in the tubular body, a convex portion 57 that is unevenly fitted with the concave portion 24 of the rotating body 20 is formed. Further, the connecting portion 56 is formed with an operating piece approaching portion 58 into which the operating piece 54 enters and a holding body approaching portion 59 into which the operating piece holding body 55 enters. The operation piece approaching portion 58 communicates with the holding body approaching portion 59 and the outer peripheral surface of the connecting portion 56, respectively. The plane position of each operating piece approaching portion 58 is formed in a spiral shape (oblique hole) that moves so as to orbit in the same direction from the upper surface to the bottom of the connecting portion 56.

In each operation piece entry portion 58, the angle in the horizontal plane formed by the plane position on the upper surface of the connecting portion 56, the plane center portion of the connecting portion 56, and the plane position on the bottom surface side of the connecting portion 56 is 90 degrees or more. Is also trying to grow. By adopting the connecting portion 56 having such an operation piece entry portion 58, it is possible to promote the demagnetization of the magnetism remaining on the suction surface when switching between the suction state and the non-adsorption state of the suction surface. It is convenient in that it can be done.

Further, on the upper surface of the main body 40, a case 60 formed of a magnetic material and formed into a bottomed cylindrical body capable of accommodating the connecting portion 56 in the internal space is attached to the main body 40 with the base portion 62 which is the bottom surface facing upward. It is attached by a known method such as screwing. The base portion 62 is provided with screw holes at positions corresponding to the plane positions of the screw holes 12 formed on the upper surface of the tubular body 10 (main body 40), and the base portion 62 and the tubular body 10 are screwed together. Can be done. After that, by attaching the screw hole cover 64 to the upper surface of the base portion 62, the upper surface of the base portion 62 can be finished as a flat surface. Further, an elongated hole 66 as a guide portion extending in the height direction is formed on the side peripheral surface of the case 60 so as to be aligned with the plane position of the operation piece 54 of the operation portion 52. Since the elongated hole 66 is formed, the operation piece 54 can be moved up and down in a non-rotating state in the horizontal plane, and the operation piece 54 can be surely entered into the operation piece entry portion 58.

Further, a bearing 70 is arranged between the operation piece 54 and the base portion 62 of the case 60. In this embodiment, a thrust bearing is used for the bearing 70.

Next, the operation method of the magnet holder 100 in this embodiment will be described. In the present embodiment, when the magnetic force on the suction surface of the magnet holder 100 is turned off to put the suction surface in the non-suction state, the operation unit 52 is located on the upper surface side of the base unit 62 as shown in FIG. 2A. The upper surface of the magnet holder 100 becomes a substantially flat surface. At this time, as shown in FIG. 2B, the operation piece 54 is in a state of entering the operation piece entry portion 58 from the upper surface of the connecting portion 56. At this time, since the north and south poles of the rotating body 20 face the separator 30 as shown in FIG. 3, the suction surface is in a non-adsorption state, and a transport object or the like made of a magnetic material (not shown). The magnet holder 100 can be attached and detached without removing it.

When the user lifts the object to be transported, it is necessary to turn on the magnetic force of the suction surface of the magnet holder 100 to bring it into a suction state. Specifically, if the user slides the operation unit 52 toward the suction surface side of the magnet holder 100 (main body 40) as shown in FIG. 4A and causes the operation piece 54 to enter the bottom side of the operation piece entry portion 58. good.

As shown in FIG. 4B, the operation unit 52 is not rotated in the horizontal plane along the elongated hole 66 formed in the height direction of the side peripheral surface of the case 60, but is in the height direction of the magnet holder 100 (main body 40). The operation piece 54 moves and moves in the height direction in the operation piece entry portion 58 without rotating in the horizontal plane. As a result, the connecting portion 56 in a state of being rotatable together with the rotating body 20 rotates in the horizontal plane by pressing the lower side of the operating piece approaching portion 58 formed in the connecting portion 56 by the operating piece 54. .. That is, the vertical movement of the operation unit 52 is converted into a rotational movement of the connecting unit 56 in the horizontal plane by the operation conversion unit 50.

By adopting the configuration of the operation piece 54 and the operation piece holder 55 attached to a plurality of places of the operation unit 52, the magnet holder 100 is rolled during the operation of switching between the suction state and the non-suction state of the suction surface of the magnet holder 100. The generation of directional force can be prevented. That is, it is convenient in that the magnet holder 100 does not fall down when the suction surface of the magnet holder 100 is switched between the suction state and the non-suction state, and the switching operation can be performed in a stable state. ..

By rotating the connecting portion 56 in the horizontal plane inside the case 60 in this way, the rotating body 20 connected to the connecting portion 56 and rotatably housed in the internal space of the tubular body 10 rotates. The suction surface can be in a suction state as shown in FIG. If the object to be transported is attracted and held on the suction surface in this state, the object to be transported can be transported together with the magnet holder 100. After transporting the object to be transported and the magnet holder 100 to the transport destination, the magnetic force of the suction surface may be turned off again to bring the suction surface into a non-adsorption state, and the magnet holder 100 may be removed.

As described above, according to the configuration of the magnet holder 100 in the present embodiment, it is not necessary to dispose of the rotating lever for switching between the suction state and the non-suction state of the suction surface of the magnet holder 100. Thereby, the plane dimension of the magnet holder 100 can be reduced. Further, the operation of switching between the suction state and the non-suction state of the suction surface can also be performed by the vertical movement operation of the magnet holder 100 in the height direction, and the suction state and the non-suction state can be easily switched even in a narrow work space. You can perform operations.

(Second Embodiment)
FIG. 6 is an assembly perspective view of the magnet holder 100 according to the second embodiment. The present embodiment is different from the first embodiment in that it further has an urging member 80 for maintaining the specific shape of the motion conversion unit 50 and the case 60 and the basic state of the suction surface. .. In the present embodiment, in order to simplify the description, the same configurations as those in the first embodiment are designated by the reference numerals used in the first embodiment, and detailed description thereof is omitted here.

In the motion conversion unit 50 of the present embodiment, the frame-shaped operation unit 52 having the operation lever 51 and the first end portion are screwed to the operation lever 51, and the operation piece is attached to the opposite end portion (second end portion). The configuration is different from that of the first embodiment in that the shaft body 51A to which the 54 is attached is provided. Further, in the motion conversion unit 50 of the present embodiment, a female screw portion 53 is formed at the bottom of the operation portion 52, and the male screw 68 formed on the outer peripheral surface of the tubular portion 67 erected on the upper surface of the case 60. The operation units 52 are attached to the case 60 so as to be arranged in series by screwing them together. Further, an adjusting nut 90 is screwed between the bottom surface of the operation unit 52 and the case 60 in the present embodiment. The adjusting nut 90 is for adjusting the height position of the operating portion 52 with respect to the tubular portion 67 of the case 60.

The shaft body 51A to which the first end is connected to the operating lever 51 is inserted into the internal space of the case 60 from the upper surface opening of the tubular portion 67, and is attached to the bearing 70 arranged in the internal space of the case 60. The force member 80 is inserted, and the operation piece 54 inserted through the second end supports them. The bearing 70 is held by the operation piece 54 in the initial state, but after the operation piece 54 enters the operation piece entry portion 58, it is held by the upper surface of the connection portion 56, and the rotation of the connection portion 56 in the horizontal plane is smooth. Can be.

Further, by disposing the urging member 80 between the case 60 and the operation piece 54, the initial position of the operation lever 51 is set to the case 60 side and the initial position of the operation piece 54 is set as shown in FIG. It can be set on the bottom side of the operation piece approaching portion 58. In the present embodiment, the suction surface is set to the suction state by setting the initial position of the operation piece 54 to the bottom of the operation piece entry portion 58, but the initial state of the suction surface may be set to the non-suction state. can.

On the inner peripheral surface of the case 60 in the present embodiment, in order to avoid interference with the operation piece 54 and to regulate the rotation of the operation piece 54 in the horizontal plane when the operation piece 54 moves up and down (make it non-rotating). A concave groove 69 as a guide portion is formed along the height direction of the case 60.

As shown in FIG. 8, when the magnet holder 100 is attached to a object to be transported made of a magnetic material, the user pulls up the operation lever 51 and pulls up the operation piece 54 to the upper side of the connecting portion 56. The operation piece 54 is lifted (moved upward) along the concave groove 69 formed on the inner peripheral surface of the case 60 without rotating in the case 60. At this time, the upper end edge of the operation piece approaching portion 58 is pressed by the operation piece 54, so that the connecting portion 56 rotates in the horizontal plane, and the rotating body 20 connected to the connecting portion 56 also rotates in the horizontal plane and the magnetic poles. By switching the arrangement state, the suction surface becomes a non-suction state.

When the user places the suction surface on the predetermined position of the object to be transported and releases the operation lever 51, the operation piece 54 moves to the bottom of the operation piece entry portion 58 due to the urging force of the urging member 80, and the connecting portion The 56 and the rotating body 20 can be returned to the initial state. As described above, since the suction surface is in the suction state in the initial state of the present embodiment, the magnet holder 100 can be attracted to the object to be transported. When the suction position of the magnet holder 100 with respect to the object to be transported can be freely selected, the magnet holder 100 can be attracted to the object to be transported with the operation lever 51 released.

After the user attracts the magnet holder 100 to the object to be transported as described above, the user holds the outer peripheral edge of the operation unit 52 formed in a frame shape as a handle to hold the object to be transported to a predetermined destination. Can be transported to. Then, after transporting the object to be transported to a predetermined destination, the user pulls up the operation lever 51 to switch the suction surface to the non-adsorption state, and while the operation lever 51 is still pulled up, the user holds the magnet holder 100 to the object to be transported. Can be pulled away from.

According to the configuration of the motion conversion unit 50 as in the present embodiment, the handle portion is formed by the operation unit 52 formed of the frame body, and the transportation work of the object to be transported can be easily performed. It is the same as the first embodiment in that the rotating body 20 is rotated inside the main body 40 by the vertical movement of the operating lever 51 to switch between the suction state and the non-suction state of the suction surface.

As described above, the magnet holder 100 according to the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment. For example, in the first embodiment, a mode in which the connecting portion 56 is provided with the four operating piece approaching portions 58 and the one holding body approaching portion 59 is described, but the operating piece approaching portion 58 is at least one. All you need is an article. Further, in the present embodiment, the operation piece 54 is hung between the operation piece holder 55 and the operation unit 52, but the configuration of the operation piece holder 55 may be omitted. In this case, the operation piece 54 may be arranged so as to be hung in the diameter direction of the inner peripheral surface of the operation unit 52, or may be arranged cantilever on the inner peripheral surface of the operation unit 52. can.

Further, in the second embodiment, the operation piece 54 is arranged in a state of being inserted in the radial direction of the shaft body 51A, but a form in which the operation piece 54 is projected from the outer peripheral surface of the shaft body 51A in the radial direction is adopted. You can also do it. Further, the arrangement of at least one of the case 60, the bearing 70, the urging member 80 and the adjusting nut 90 can be omitted. The specific form of the operating lever 51 can also be appropriately changed within the technical scope of the invention.

Further, in the second embodiment, a mode in which one operation unit 50 switches between the suction state and the non-adsorption state of the suction surface of one main body 40 has been described, but as shown in FIG. 9, one operation unit 50 It is also possible to perform an operation of switching the suction surfaces of the two main bodies 40. In this case, the shaft body 51A having a bifurcated required length range on the second end side that enters the connecting portion 56 may be connected to the operating lever 51. Further, the shaft body 51A can be housed inside the shaft body cover 51B in a state where it can move up and down.

Further, as shown in FIG. 10, it is also possible to adopt a form in which the first end portion of the shaft body 51A is connected to an electric fluid cylinder (not shown). According to such a form, the magnet holder 100 can be used as a part of an electric tool or the like, and the suction surface of the main body 40 can be switched between the suction state and the non-suction state by the power tool.

In addition, a modified example described in the specification or a form in which other known configurations are appropriately combined can be adopted with respect to the configuration of the present embodiment described above.

10 cylinders, 12 screw holes,
20 rotating body, 22 semi-cylindrical body, 24 recesses, 26 bottom plate,
30 Separator,
40 body,
50 motion converter, 51 operation lever, 51A shaft body, 51B shaft body cover,
52 operation part, 53 female thread part, 54 operation piece, 55 operation piece holder, 56 connection part,
57 Convex part, 58 Operation piece approach part, 59 Holder approach part,
60 case, 62 base part, 64 screw hole cover, 66 long hole (guide part),
67 Cylindrical part, 68 Male screw, 69 Concave groove (guide part),
70 bearings,
80 urging member,
90 Adjustment nut,
100 magnet holder

Claims (8)

A main body having a cylinder formed of a magnetic material, a rotating body formed of a magnet and rotatably housed inside the cylinder, and a separator arranged in the diameter direction of the cylinder.
It is provided with an motion conversion unit which is connected to the rotating body and converts a vertical motion with respect to the main body into a rotating motion in the horizontal plane of the rotating body.
A magnet holder provided by the motion conversion unit to switch the arrangement state of the magnetic poles of the rotating body inside the cylinder so that one end surface of the main body can be switched to a magnetically attractable suction state or a non-suction state. There,
The motion conversion unit includes an operation unit for performing the vertical movement operation and a connecting unit connected to the rotating body.
An operation piece extending in a direction intersecting the vertical movement is attached to the operation unit.
An operation piece entry portion into which the operation piece enters is spirally formed in the connection portion.
A magnet holder characterized in that the rotating body rotates inside the cylinder together with the connecting portion when the operating piece enters the operating piece approaching portion by the vertical movement operation of the operating portion. It has a case that is attached to the upper surface of the main body and can accommodate the connecting portion inside.
The magnet holder according to claim 1, wherein a guide portion for guiding the vertical movement of the operation piece in a non-rotating state is formed in the case. The magnet holder according to claim 2, wherein a bearing is disposed between the case and the connecting portion. The magnet holder according to any one of claims 1 to 3, wherein the operation piece is attached to a plurality of places. The operation unit according to any one of claims 1 to 4, wherein the operation unit is formed in a cylinder in which the outer peripheral surface of the main body is inscribed and the operation piece is attached to the inner side surface. Magnet holder. The operation unit has a shaft body extending in the direction of the vertical movement operation, and the operation piece is attached at the tip end portion of the shaft body in a state of being crossed with the shaft body. The magnet holder according to any one of 1 to 4. It has a case that is attached to the upper surface of the main body and can accommodate the connecting portion inside.
The magnet holder according to claim 6, wherein an urging member for urging the shaft body toward the connecting portion is arranged between the case and the connecting portion. The magnet holder according to claim 7, wherein the operating portion is provided with an operating lever for separating the shaft body from the connecting portion against the urging force of the urging member.

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