JP2009293353A - Magnet catch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnet catch which enables the easy adjustment of an attractive force even in the state of being fixed to a structure etc. <P>SOLUTION: The magnet catch 100 includes: a body 110 which includes a top plate 111 constituting an abutting surface 111a for abutting on an object to be attracted, and which is immovably fixed to the structure; and a movable magnet unit 130 which has a shaft member 131 having a male screw formed on an outer peripheral surface and rotatably pivoted on the body 110 in such a way that an axial direction is perpendicular to the abutting surface 111a, a dial member 132 fixed to the shaft member 131 and exposed on the outside, a screwing member 133 for being screwed into the shaft member 131, and a movable magnet 135 as a permanent magnet fixed to the screwing member 133. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

In the present invention, the object to be adsorbed fixed to the structure is adsorbed by the magnetic force generated by the permanent magnet, so that the structure is held in a state where the other structure is locked ( More specifically, the present invention relates to a magnet catch in which another structure cannot be moved relative to the structure unless an external force exceeding the attractive force generated by the permanent magnet is applied.
More specifically, the present invention relates to a technology that makes it possible to adjust the attractive force of a magnet catch.

Conventionally, an object to be adsorbed fixed to a structure and adhering to another structure (including the case where the other structure itself is an object to be adsorbed) is adsorbed by the magnetic force generated by the permanent magnet, thereby Magnet catches that hold other structures in a locked state are well known.
For example, as described in Patent Document 1.

  The magnet catch generally differs in the attractive force (the force required to separate the object to be adsorbed by the magnet catch from the magnet catch) required according to the application.

  Conventionally, as a general method for adjusting the attractive force of the magnet catch, there is a method of changing the size of the permanent magnet, a method of changing the material constituting the permanent magnet, or the like.

However, the above method is based on the premise that a plurality of types of magnet catches having different attractive forces are prepared in advance, and these magnet catches are selectively used according to applications.
Therefore, in the process of manufacturing a product using a plurality of types of magnet catches having different attracting forces, or the process of manufacturing a plurality of types of products using magnet catches having different attracting forces, management of the plurality of types of magnet catches is complicated. Have the problem of becoming.

  In addition, the above method has a problem that it is substantially impossible for a purchaser of a product using a magnet catch to respond to the desire to adjust the attractive force of the magnet catch after purchasing the product.

  As a magnet catch capable of adjusting (changing) the attractive force by a method other than the above, a magnet catch described in Patent Document 2 or Patent Document 3 is known.

  The magnet catch described in Patent Document 2 has a case that constitutes a main body, a permanent magnet fixed to the main body, and a front end portion that protrudes and retracts from a case formed from a window formed on the front surface of the case. A pair of magnet pieces that can be advanced and retracted in a moving direction, and a pair of screws that are respectively screwed into the pair of magnet pieces to adjust the advance and retreat of the magnet pieces.

However, the magnet catch described in Patent Document 2 is a magnet that is magnetized by a pair of magnet pieces moving relative to the case fixed to the structure to change the area overlapping the permanent magnet fixed to the case. Because the structure is such that the attraction force of the piece changes, adjusting the attraction force of the magnet piece will inevitably be the contact surface of the object to be adsorbed (the surface on which the object to be adsorbed in the magnet catch comes in contact, In the magnet catch described in Patent Literature 2, a virtual surface including the tip portions of the pair of magnet pieces corresponds to this) and moves relative to the main body.
Therefore, if you want to adjust the attracting force of the magnet catch without changing the position of the contact surface of the attracted object, adjust the attracting force of the magnet catch and adjust the fixing position of the magnet catch with respect to the structure. And a series of operations are complicated.

  The magnet catch described in Patent Document 3 is fixed to a door frame. When the door is closed, a gap between a magnetic plate (adsorbed object) fixed to the door and a permanent magnet of the magnet catch is provided. A fine movement mechanism for adjusting is provided.

  However, although the magnet catch described in Patent Document 3 discloses a magnetic force adjusting screw as a specific example of the fine movement mechanism, (a) a screwdriver is required to operate (rotate) the magnetic force adjusting screw. And (b) since the magnetic force adjusting screw is hidden inside the door frame, the magnet catching force is easily adjusted after the door frame is installed at a predetermined position. Has the problem of being unable to do so.

  In addition to the above-described magnet catch, a structure of a magnet catch that can adjust the position of a contact surface with an object to be attracted is known. For example, as described in Patent Document 4 or Patent Document 5.

  In the magnet catch described in Patent Document 4, a permanent magnet made of synthetic resin having hard magnetic powder is formed into a substantially cylindrical shape, and a male screw is formed on the outer peripheral surface of the permanent magnet, and is screwed into the main body of the magnet catch. Thereby, the protrusion amount of the permanent magnet with respect to the main body of the magnet catch, and the position of the contact surface of the attracted object (the tip surface of the permanent magnet) on the magnet catch can be adjusted.

  In the magnet catch described in Patent Document 5, a combination of a permanent magnet and a magnet piece is accommodated in a mounting frame, and the mounting frame is slidably engaged with the main body of the magnet catch. By interposing a cam between the main body and the cam, and rotating the cam, the mounting frame, and thus the combination of the permanent magnet and the magnet piece, can be moved forward and backward with respect to the main body of the magnet catch.

However, the magnet catches described in Patent Document 4 and Patent Document 5 can only adjust the position of the contact surface with the object to be attracted, and in both cases, the attracting force itself of the magnet catch changes. Absent.
JP 2002-147094 A Japanese Utility Model Publication No. 61-5564 Japanese Utility Model Publication No. 56-129475 Japanese Examined Patent Publication No. 61-46041 No. 7-6430

  The present invention has been made in view of the above situation, and provides a magnet catch capable of easily adjusting the attractive force even when fixed to a structure or the like.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in claim 1,
A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A shaft member rotatably supported on the main body in a posture in which a male screw is formed on the outer peripheral surface and an axial direction is perpendicular to the contact surface, and a dial member fixed to the shaft member and exposed to the outside A movable member having a movable member that is a permanent magnet fixed to the screw member, and a screw member that is screwed to the shaft member;
It comprises.

In claim 2,
The main body has a side wall plate that is fixed to the top plate and forms an inner wall surface perpendicular to the contact surface,
At least one of the screwing member or the movable magnet abuts against the inner wall surface of the side wall plate, whereby rotation of the screwing member around the shaft member is restricted.

In claim 3,
A fixed magnet, which is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface, is provided.

In claim 4,
The fixed magnet is composed of a plurality of permanent magnets,
A plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body.

In claim 5,
The fixed magnet is composed of a plurality of permanent magnets,
The plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit when viewed from a direction perpendicular to the contact surface.

In claim 6,
A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A shaft member rotatably supported on the main body in a posture in which a male screw is formed on the outer peripheral surface and an axial direction is perpendicular to the contact surface, and a dial member fixed to the shaft member and exposed to the outside And a movable magnet unit having a movable magnet that is a permanent magnet screwed to the shaft member;
It comprises.

In claim 7,
The main body has a side wall plate that is fixed to the top plate and forms an inner wall surface perpendicular to the contact surface,
When the movable magnet abuts against the inner wall surface of the side wall plate, the rotation of the movable magnet around the shaft member is restricted.

In claim 8,
A fixed magnet, which is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface, is provided.

In claim 9,
The fixed magnet is composed of a plurality of permanent magnets, and the plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body.

In claim 10,
The fixed magnet is composed of a plurality of permanent magnets,
The plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit when viewed from a direction perpendicular to the contact surface.

In claim 11,
A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A shaft member fixed to the main body in a posture in which an external thread is formed on an outer peripheral surface and an axial direction is perpendicular to the contact surface, a dial member screwed into the shaft member and exposed to the outside, and the dial A movable magnet unit having a movable magnet that is a permanent magnet fixed to the member;
It comprises.

In claim 12,
A fixed magnet, which is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface, is provided.

In claim 13,
The fixed magnet is composed of a plurality of permanent magnets,
A plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body.

In claim 14,
The fixed magnet is composed of a plurality of permanent magnets,
The plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit when viewed from a direction perpendicular to the contact surface.

In claim 15,
A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A male member is formed on the outer peripheral surface and the shaft member is fixed to the main body in a posture in which the axial direction is perpendicular to the contact surface, and the movable member is a permanent magnet that is screwed to the shaft member and exposed to the outside. A movable magnet unit having a magnet;
It comprises.

In claim 16,
A fixed magnet, which is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface, is provided.

In claim 17,
The fixed magnet is composed of a plurality of permanent magnets,
A plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body.

In claim 18,
The fixed magnet is composed of a plurality of permanent magnets,
The plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit when viewed from a direction perpendicular to the contact surface.

In claim 19,
A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A movable magnet supported by the main body and capable of changing a distance from the contact surface by moving forward and backward with respect to the contact surface;
A fixed magnet fixed to the main body and maintained at a distance from the contact surface;
It comprises.

  The present invention has an effect that the adsorption force can be easily adjusted even when fixed to a structure or the like.

Below, the magnet catch 100 which is 1st embodiment of the magnet catch based on this invention is demonstrated using FIGS. 1-10.
As shown in FIGS. 1 to 4, the magnet catch 100 mainly includes a main body 110, a lid 120, a movable magnet unit 130, fixed magnets 141, 142, 143, and 144 and pads 151 and 152.

The main body 110 is an embodiment of the main body according to the present invention.
The main body 110 is a main structure of the magnet catch 100 and is fixed to the structure so as not to move.
Specific examples of the “structure” include building furniture (furniture, etc.), building doors, home appliances, and other various devices.
Hereinafter, for convenience, as shown in FIG. 1, “vertical direction”, “front / rear direction” and “left / right direction” are defined based on the shape of the main body 110, and each part of the magnet catch 100 will be described using the defined directions. In addition, the direction defined here does not prescribe | regulate the attitude | position when the magnet catch 100 is used.

  As shown in FIGS. 1 to 5, the main body 110 mainly includes a top plate 111, a front wall plate 112, a rear wall plate 113, a left wall plate 114, a right wall plate 115, a left side plate 116, a right side plate 117, and a partition plate 118a. · 118b · 118c · 118d.

  The top plate 111 is a plate-like member that forms an abutment surface 111a for an adsorbed object to abut.

Here, the “objects to be attracted” widely includes articles that can be attracted by the magnetic catch.
The object to be adsorbed is made of a material that can be adsorbed by a permanent magnet, that is, a paramagnetic material or a ferromagnetic material.
Specific examples of the material constituting the adsorbent include ferritic stainless steel.
The object to be attracted is usually fixed to another structure different from the structure to which the magnet catch is fixed.
Note that the object to be adsorbed may be separated from another structure, or may be integrated (the other structure itself may be the object to be adsorbed).

  The shape of the top plate 111 of this embodiment is a substantially rectangular parallelepiped shape that is long in the left-right direction when viewed from above and below, and the object to be attracted is a contact surface that is the upper plate surface of the top plate 111 when attracted to the magnet catch 100. It abuts on the surface 111a.

The front wall plate 112 is an embodiment of the side wall plate according to the present invention.
The front wall plate 112 is a plate-like member fixed to the front end portion of the top plate 111. As shown in FIG. 4, the inner wall surface 112 a that is the rear plate surface (rear surface) of the front wall plate 112 is perpendicular to the contact surface 111 a of the top plate 111. A notch 112 b is formed at the substantially right and left center of the lower end portion of the front wall plate 112.

  The rear wall plate 113 is a plate-like member fixed to the rear end portion of the top plate 111. As shown in FIG. 4, the inner wall surface 113 a that is the front surface (front surface) of the rear wall plate 113 is perpendicular to the contact surface 111 a of the top plate 111. A notch 113 b is formed at the substantially right and left center of the lower end portion of the rear wall plate 113.

The left wall plate 114 is a plate-like member fixed to the left end portion of the top plate 111.
The front end portion of the left wall plate 114 is fixed to the left end portion of the front wall plate 112, and the rear end portion of the left wall plate 114 is fixed to the left end portion of the rear wall plate 113.

The right wall plate 115 is a plate-like member fixed to the right end portion of the top plate 111.
The front end portion of the right wall plate 115 is fixed to the right end portion of the front wall plate 112, and the rear end portion of the right wall plate 115 is fixed to the right end portion of the rear wall plate 113.

  Thus, the main body 110 is shaped like a box with a downward opening 119 formed by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114, and the right wall plate 115 (see FIG. 5).

  The left side plate 116 is a plate-like member that is fixed to the lower end portion of the left wall plate 114 and extends leftward. The left side plate 116 is formed with a long hole 116a having a shape penetrating in the vertical direction and extending in the front-rear direction.

  The starboard plate 117 is a plate-like member that is fixed to the lower end portion of the right wall plate 115 and extends in the right direction. The starboard plate 117 is formed with a long hole 117a having a shape penetrating in the vertical direction and extending in the front-rear direction.

The partition plates 118a, 118b, 118c, and 118d are plate-like members.
As shown in FIGS. 3 and 5, the partition plates 118 a, 118 b, 118 c, and 118 d are in a space surrounded by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114, and the right wall plate 115. From the left, the partition plate 118a, the partition plate 118b, the partition plate 118c, and the partition plate 118d are arranged at intervals in this order.
The upper ends of the partition plates 118a, 118b, 118c, and 118d are fixed to the lower plate surface of the top plate 111, respectively.
The front end portions of the partition plates 118a, 118b, 118c, and 118d are fixed to the inner wall surface 112a of the front wall plate 112, respectively.
The rear ends of the partition plates 118a, 118b, 118c, and 118d are fixed to the inner wall surface 113a of the rear wall plate 113, respectively.

The main body 110 of this embodiment is made of polypropylene and is manufactured by integral molding using an injection molding machine, but the main body according to the present invention is not limited to this.
For example, you may manufacture the main body which concerns on this invention by combining several components shape | molded previously.
The material constituting the main body according to the present invention is not limited to polypropylene, and may be other resin materials such as polyethylene and polyacetal.
Moreover, the material which comprises the main body which concerns on this invention is not limited to a resin material, For example, other materials, such as rubber | gum, an elastomer, a timber, a metal material, ceramics, may be sufficient.

  As shown in FIGS. 2 and 3, the lid 120 is a plate-like member that closes the opening 119 by being fitted into the opening 119 of the main body 110.

The movable magnet unit 130 is an embodiment of the movable magnet unit according to the present invention.
As shown in FIG. 7, the movable magnet unit 130 mainly includes a shaft member 131, a dial member 132, a screwing member 133, a pad 134, and a movable magnet 135.

The shaft member 131 is an embodiment of the shaft member according to the present invention.
The shaft member 131 is a substantially cylindrical member having a male screw formed on the outer peripheral surface. A substantially conical head 131 a is formed at one end of the shaft member 131.

The dial member 132 is an embodiment of the dial member according to the present invention.
The dial member 132 is a disk-shaped member. The dial member 132 is formed with a fitting hole 132a which is a hole penetrating the center of the upper and lower board surfaces.
Further, serrations (notches) for preventing slippage are formed on the peripheral end surface of the dial member 132.
The dial member 132 is fixed to the shaft member 131 by fitting the other end of the shaft member 131 (the end portion on which the head portion 131a is not formed) into the fitting hole 132a.

The screwing member 133 is an embodiment of the screwing member according to the present invention.
The screwing member 133 has a bottom plate 133a, a front sliding plate 133b, and a rear sliding plate 133c.

The bottom plate 133a is a plate-like member having a substantially rectangular shape when viewed from the vertical direction.
The bottom plate 133a is formed with a screw hole 133d penetrating the center of the upper and lower plate surfaces. A female screw is formed on the inner peripheral surface of the screw hole 133d.

  The front sliding plate 133b is a plate-like member having a substantially rectangular shape when viewed from the front-rear direction. The lower end portion of the front sliding plate 133b is fixed to the front end portion of the bottom plate 133a.

  The rear sliding plate 133c is a plate-like member having a substantially rectangular shape when viewed from the front-rear direction. The lower end portion of the rear sliding plate 133c is fixed to the rear end portion of the bottom plate 133a.

  When the female screw formed on the inner peripheral surface of the screw hole 133d is engaged with the male screw formed on the outer peripheral surface of the shaft member 131, the screw member 133 is screwed into the shaft member 131.

Although the screwing member 133 of this embodiment is manufactured by bending a rectangular metal plate, the screwing member according to the present invention is not limited to this.
For example, you may manufacture the screwing member which concerns on this invention by combining several components shape | molded previously.
Moreover, the material which comprises the screwing member which concerns on this invention is not limited to a metal material, For example, other materials, such as a resin material, rubber | gum, an elastomer, wood, ceramics, may be sufficient.
However, the material constituting the screwing member according to the present invention is desirably a material that is not damaged even when a certain amount of external force is applied, and that does not greatly elastically deform (can maintain the shape).

The pad 134 is a plate-like member made of a foamable resin material (for example, polyurethane).
The pad 134 is formed with a through hole 134 a that is a hole penetrating the center of the upper and lower plate surfaces of the pad 134.
The lower plate surface (lower surface) of the pad 134 is fixed to the upper plate surface (upper surface) of the bottom plate 133a of the screwing member 133 by an adhesive.
When the pad 134 is fixed to the screw member 133, the through hole 134a formed in the pad 134 overlaps with the screw hole 133d formed in the bottom plate 133a in plan view.
A shaft member 131 is rotatably and slidably inserted in the through hole 134a of the pad 134.

The movable magnet 135 is an embodiment of the movable magnet according to the present invention.
The movable magnet 135 is a substantially rectangular parallelepiped permanent magnet.
Here, the “permanent magnet” refers to an object that can maintain the properties as a magnet for a relatively long period of time even when no magnetic field or current is supplied from the outside.
Specific examples of the permanent magnet include alnico magnet, KS steel, MK steel, ferrite magnet, samarium cobalt magnet, neodymium magnet and the like.
The movable magnet 135 is formed with a through hole 135a that is a hole penetrating in the vertical direction. The upper end portion of the through-hole 135a is expanded in diameter upward.
The lower surface of the movable magnet 135 is fixed to the upper plate surface (upper surface) of the pad 134 with an adhesive. As described above, the movable magnet 135 is fixed to the screwing member 133 via the pad 134.
When the movable magnet 135 is fixed to the pad 134, the through hole 135a formed in the movable magnet 135 overlaps with the through hole 134a formed in the pad 134 in plan view.
A shaft member 131 is rotatably and slidably inserted in the through hole 135a of the movable magnet 135.

As shown in FIGS. 3 and 4, the movable magnet unit 130 is located in a space surrounded by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114 and the right wall plate 115, and the lid 120 of the main body 110. Be contained.
At this time, the axial direction of the shaft member 131 that is one of the members constituting the movable magnet unit 130 is perpendicular to the contact surface 111 a of the top plate 111 of the main body 110.
Further, the front sliding plate 133b of the screwing member 133 which is one of the members constituting the movable magnet unit 130 contacts the inner wall surface 112a of the front wall plate 112 of the main body 110, and the rear sliding plate 133c is the It contacts the inner wall surface 113a of the rear wall plate 113.
Further, the left side surface of the movable magnet 135 that is one of the members constituting the movable magnet unit 130 is in contact with the right side surface of the partition plate 118b of the main body 110, and the right side surface of the movable magnet 135 is the left side of the partition plate 118c of the main body 110. Contact the surface.
Furthermore, the lower surface of the dial member 132, which is one of the members constituting the movable magnet unit 130, abuts on a ring-shaped protrusion 121 formed on the lid 120, and the peripheral edge of the dial member 132 has a notch 112b and The peripheral edge of the upper panel surface of the dial member 132 protrudes to the outside from the notch 113b, and the notch 112b is formed on the front wall plate 112 of the main body 110 and the notch 113b is formed on the rear wall plate 113. Abuts the part.

  Accordingly, the movement of the combined shaft member 131 and dial member 132 in the vertical direction (the movement of the shaft member 131 in the axial direction) is restricted, and the movement of the movable magnet unit 130 in the front-rear direction and the left-right direction is restricted. Among the members constituting the unit 130, the rotation of the shaft member 131 centered on the shaft member 131 of the screw member 133, the pad 134, and the movable magnet 135 combined (relative rotation with respect to the main body 110) is restricted, and the shaft member 131 is screwed. It is rotatably supported by the main body 110 via a combination of the member 133, the pad 134 and the movable magnet 135.

In the present embodiment, the shaft member 131 is rotatably supported by the main body 110 via a combination of the screw member 133, the pad 134, and the movable magnet 135, but the present invention is not limited to this. .
For example, the shaft member 131 is rotatably supported by the main body 110 by extending both ends of the shaft member 131 and fitting the both ends into recesses formed in the top plate 111 and the lid 120 of the main body 110, respectively. It is also good.

As shown in FIGS. 3 and 8, when the operator touches and turns the dial member 132 that protrudes from the notches 112b and 113b and is exposed, the dial member 132 and the shaft member 131 are integrated. Rotate to.
When the shaft member 131 rotates, a screwing member 133 screwed into the shaft member 131, a pad 134 fixed to the screwing member 133 and a movable magnet 135 fixed to the pad 134 are integrally formed in the vertical direction, that is, the shaft member 131. Move in the direction of the axis.
As a result, the distance from the abutment surface 111a of the main body 110 to the movable magnet 135 changes, and the magnetic force acting between the object to be attracted that abuts on the abutment surface 111a and the movable magnet 135, and thus the magnet catch 100. Adsorption power changes.

In the present embodiment, the lower surface of the pad 134 and the upper surface of the bottom plate 133a of the screwing member 133 are fixed with an adhesive, and the upper surface of the pad 134 and the lower surface of the movable magnet 135 are fixed with an adhesive. Is fixed to the screwing member 133 via the pad 134, but the present invention is not limited to this.
For example, the pad 134 may be omitted, and the movable magnet 135 may be directly fixed to the screw member 133 (without the pad 134 interposed).

In the present embodiment, the screw member 133 rotates around the shaft member 131 (main body) by contacting the inner wall surface 112a of the front wall plate 112 and the inner wall surface 113a of the rear wall plate 113 of the main body 110. (Relative rotation with respect to 110) is restricted, but the present invention is not limited to this.
For example, the configuration may be such that the rotation of the screwing member around the shaft member is restricted by the movable magnet coming into contact with the inner peripheral surface of one of the side wall plates of the main body. A configuration may be adopted in which the rotation of the screwing member around the shaft member is restricted by contacting both the inner peripheral surfaces of the side wall plates of the main body.

The fixed magnets 141, 142, 143, and 144 are one embodiment of the fixed magnet according to the present invention. As shown in FIG. 9, each of the fixed magnets 141, 142, 143, and 144 is a substantially rectangular parallelepiped permanent magnet.
As shown in FIG. 3, the fixed magnets 141, 142, 143, and 144 are surrounded by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114 and the right wall plate 115, and the lid 120 of the main body 110. Stored in the space.
At this time, the fixed magnet 141 contacts the left wall plate 114 and the partition plate 118a, the fixed magnet 142 contacts the partition plate 118a and the partition plate 118b, and the fixed magnet 143 contacts the partition plate 118c and the partition plate 118d. The magnet 143 contacts the partition plate 118d and the right wall plate 115. Therefore, the movement of the fixed magnets 141, 142, 143, and 144 in the left-right direction is restricted.
The upper end portions of the front and rear surfaces of the fixed magnets 141, 142, 143, and 144 are in contact with stepped surfaces 111b and 111b (see FIGS. 4 and 5) formed on the main body 110. Therefore, the movement of the fixed magnets 141, 142, 143, and 144 in the front-rear direction is restricted.

The pads 151 and 152 are plate-like members made of a foamable resin material (for example, polyurethane).
The pad 151 is sandwiched between the fixed magnets 141 and 142 and the lid 120 in a space surrounded by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114 and the right wall plate 115, and the lid 120 of the main body 110. It is housed in a position.
The upper surfaces of the fixed magnets 141 and 142 are in contact with the lower plate surface (lower surface) of the top plate 111 of the main body 110, and the lower surfaces of the fixed magnets 141 and 142 are in contact with the upper surface of the pad 151.
As a result, the movement of the fixed magnets 141 and 142 and the pad 151 in the vertical direction is restricted.
The pad 152 is sandwiched between the fixed magnets 143 and 144 and the lid 120 in a space surrounded by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114 and the right wall plate 115, and the lid 120 of the main body 110. It is housed in a position.
The upper surfaces of the fixed magnets 143 and 144 are in contact with the lower plate surface (lower surface) of the top plate 111 of the main body 110, and the lower surfaces of the fixed magnets 143 and 144 are in contact with the upper surface of the pad 152.
As a result, the vertical movement of the fixed magnets 143 and 144 and the pad 152 is restricted.

Thus, the fixed magnets 141, 142, 143, and 144 are spaces surrounded by the top plate 111, the front wall plate 112, the rear wall plate 113, the left wall plate 114, the right wall plate 115, and the lid 120 of the main body 110. And the movement in the up-down direction, the left-right direction, and the front-rear direction is restricted, so that the fixed magnets 141, 142, 143, and 144 are all at a predetermined distance from the contact surface 111a of the top plate 111 of the main body 110. (The distance from the contact surface 111a of the top plate 111 of the main body 110 to the fixed magnets 141, 142, 143, and 144 does not change).
The fixed magnets 141 and 142 and the pad 151 and the fixed magnets 143 and 144 and the pad 152 are not fixed by an adhesive. If the lid 120 is removed from the main body 110, the fixed magnets 141 and 142 are fixed. 143 and 144 can be individually taken out of the main body 110 (the fixed magnets 141, 142, 143, and 144 can be attached to and detached from the main body 110).

As described above, the magnet catch 100 is
A main body 110 that has a top plate 111 that forms an abutment surface 111a for adsorbing an object to be abutted, and is fixed so as to be immovable with respect to the structure;
A male member is formed on the outer peripheral surface, and the shaft member 131 is rotatably supported on the main body 110 in a posture in which the axial direction is perpendicular to the contact surface 111a. The dial is fixed to the shaft member 131 and exposed to the outside. A movable magnet unit 130 having a member 132, a threaded member 133 threadedly engaged with the shaft member 131, and a movable magnet 135 that is a permanent magnet fixed to the threaded member 133 (via a pad 134);
It comprises.
This configuration has the following advantages.
That is, by integrally rotating the shaft member 131 and the dial member 132, the movable magnet 135 moves in the vertical direction, that is, in a direction approaching or separating from the contact surface 111a, and the movable magnet 135 is moved from the contact surface 111a. The distance to 135 changes.
As a result, it is possible to adjust (change) the magnetic force acting between the object to be attracted that is in contact with the contact surface 111a and the movable magnet 135, and hence the attractive force of the magnet catch 100.
Further, since the dial member 132 is exposed to the outside of the main body 110, even if the magnet catch 100 is fixed to a structure or the like, the operator can easily rotate the dial member 132 without using a tool or the like. It is possible to easily adjust the attractive force of the magnet catch 100 while maintaining the position of the contact surface 111a (without changing the relative position of the contact surface 111a with respect to the structure to which the main body 110 is fixed). Is possible.
In the present embodiment, the peripheral portion of the dial member 132 protrudes outside the main body 110, but the present invention is not limited to this.
That is, even if the peripheral portion of the dial member does not protrude outside the main body, the state in which the dial member is exposed to the outside of the main body, in other words, the opening formed in the main body (notch, groove, hole) And so on) as long as the dial member can be rotated by pushing the operator's finger into the body.

Further, the main body 110 of the magnet catch 100 is fixed to the top plate 111 and forms side wall plates that are perpendicular to the contact surface 111a (in this embodiment, the front wall surface 112 having the inner wall surface 112a and the inner wall surface 113a are The rear wall 113 having this corresponds)
When the screwing member 133 contacts the inner wall surface of the side wall plate, the rotation of the screwing member 133 around the shaft member 131 (relative rotation with respect to the main body 110) is restricted.
With this configuration, when the shaft member 131 and the dial member 132 are rotated together, the screw member 133 and the movable magnet 135 are integrally moved toward or away from the contact surface 111a. Therefore, the attractive force of the magnet catch 100 can be adjusted (changed).

In addition, the magnet catch 100
Fixed magnets 141, 142, 143, and 144, which are permanent magnets fixed to the main body 110 at a predetermined distance from the contact surface 111a, are provided.
This configuration has the following advantages.
The attractive force F of the magnet catch 100 in the case where both the movable magnet 135 and the fixed magnets 141, 142, 143, and 144 are provided is the distance from the contact surface 111a to the movable magnet 135 as shown in FIG. Is the largest when X = X1 (F = F1 when X = X1, see FIG. 3), and the smallest when the distance from the contact surface 111a to the movable magnet 135 is the largest (F = F2 when X = X2). However, since the minimum value F2 of the attractive force F of the magnet catch 100 is supported by the magnetic force generated by the fixed magnets 141, 142, 143, and 144, the distance X from the contact surface 111a to the movable magnet 135 is shown in FIG. The change in the attraction force F of the magnet catch 100 due to the change in is relatively moderate.
On the other hand, when all the fixed magnets 141, 142, 143, and 144 are removed from the magnet catch 100, the attractive force F of the magnet catch 100 is from the contact surface 111a to the movable magnet 135 as shown in FIG. Roughest when the distance is the smallest (F = F3 when X = X1) and smallest when the distance from the contact surface 111a to the movable magnet 135 is the largest (F = F4 when X = X2) The tendency is the same as in the case shown in FIG. 10A, but the magnet accompanying the change in the distance X from the abutting surface 111a to the movable magnet 135 is greater than when the fixed magnets 141, 142, 143, 144 are provided. The change in the adsorption force F of the catch 100 becomes large ((F3-F4)> (F2-F1)), and the minimum value of the adsorption force F becomes small (F4 <F2).
As described above, by providing the magnet catch 100 with both the movable magnet 135 and the fixed magnets 141, 142, 143, and 144, the attractive force of the magnet catch 100 according to the change in the distance from the contact surface 111a to the movable magnet 135. It is possible to make the change in the above comparatively gradual, and as a result, it is possible to prevent the attractive force of the magnet catch 100 from rapidly decreasing when the movable magnet 135 moves away from the contact surface 111a.
In other words, the attracting force of the magnet catch 100 when the distance from the contact surface 111a to the movable magnet 135 is increased is supported by the magnetic force generated by the fixed magnets 141, 142, 143, and 144, and the attracting force of the magnet catch 100 is increased. It is possible to prevent the minimum value of the force from becoming too small.

In addition, the magnet catch 100
The fixed magnets 141, 142, 143, and 144 are composed of a plurality of permanent magnets (in this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 141, 142, 143, and 144 are detachably fixed to the main body 110.
With this configuration, the fixed magnets 141, 142, 143, and 144 can be appropriately removed from the main body 110 to adjust the attractive force of the magnet catch 100.

In addition, the magnet catch 100
The fixed magnets 141, 142, 143, and 144 are composed of a plurality of permanent magnets (in this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 141, 142, 143, and 144 are arranged at positions sandwiching the movable magnet 135 of the movable magnet unit 130 when viewed from the direction perpendicular to the contact surface 111a (in this embodiment, fixed magnets are fixed). The magnets 141 and 142 are arranged on the left side of the movable magnet 135, and the fixed magnets 143 and 144 are arranged on the right side of the movable magnet 135).
With this configuration, even when the distance from the contact surface 111a to the movable magnet 135 changes, the symmetry of the surface distribution on the contact surface 111a of the attractive force of the magnet catch 100 is maintained (this embodiment). In the case of left-right symmetry).

The magnet catch 100 according to the present embodiment is used in a clean room, in order to prevent dust and the like from being generated due to contact between the object to be adsorbed and the permanent magnet when the object to be adsorbed is adsorbed. 110 is made of a resin material and no opening is formed in the top plate 111 of the main body 110. However, the present invention is not limited to this, and an opening is formed in the top plate according to the use of the magnet catch. Also good.
However, even if the distance from the contact surface to the movable magnet changes, the contact surface is more than the movable magnet so that the positional relationship between the magnet catch and the object to be adsorbed when the object is adsorbed is maintained. It is desirable to set the position close to the object to be adsorbed.
Further, the contact surface of the top plate of the main body according to the present invention is not limited to the surface of a tangible object such as the contact surface 111a of the present embodiment, and may be a virtual plane. For example, even if projections are formed at a plurality of locations on a member constituting the top plate and protruded in a direction closer to the object to be attracted than the movable magnet, a virtual plane passing through the tips of the projections may be used as the contact surface. good.

Below, the magnet catch 200 which is 2nd embodiment of the magnet catch based on this invention is demonstrated using FIGS. 11-13.
As shown in FIGS. 11 and 12, the magnet catch 200 mainly includes a main body 210, a lid 220, a movable magnet unit 230, fixed magnets 241, 242, 243, and 244 and pads 251 and 252.

The main body 210 is an embodiment of the main body according to the present invention.
The main body 210 is a main structure of the magnet catch 200, and is fixed so as not to move with respect to the structure.
11 and 12, the main body 210 is mainly composed of a top plate 211, a front wall plate 212, a rear wall plate 213, a left wall plate 214, a right wall plate 215, a left side plate 216, a right side plate 217, and a partition plate 218a. -It has 218b, 218c, 218d.

The upper plate surface of the top plate 211 forms a contact surface 211a.
A rear plate surface (rear surface) on the rear side of the front wall plate 212 forms an inner wall surface 212a, and a notch 212b is formed at substantially the left and right center of the lower end portion of the front wall plate 212.
A front plate surface (front surface) of the rear wall plate 213 forms an inner wall surface 213a, and a notch 213b is formed at a substantially right and left center of the lower end portion of the rear wall plate 213.
A long hole 216a is formed in the left side plate 216, and a long hole 217a is formed in the right side plate 217.
Since the basic configuration of the main body 210 is substantially the same as the main body 110 shown in FIG. 3, detailed description of the main body 210 is omitted.

  As shown in FIGS. 11 and 12, the lid 220 is a plate-like member that closes the opening 219 by being fitted into the opening 219 of the main body 210.

The movable magnet unit 230 is an embodiment of the movable magnet unit according to the present invention.
As shown in FIG. 13, the movable magnet unit 230 mainly includes a shaft member 231, a dial member 232, and a movable magnet 235.

The shaft member 231 is an embodiment of the shaft member according to the present invention.
The shaft member 231 is a substantially cylindrical member having a male screw formed on the outer peripheral surface. A substantially conical head 231 a is formed at one end of the shaft member 231.

The dial member 232 is an embodiment of the dial member according to the present invention.
The dial member 232 is a disk-shaped member.
The dial member 232 is formed with a fitting hole 232a which is a hole penetrating the center of the upper and lower board surfaces.
Further, serrations (notches) for preventing slippage are formed on the peripheral end surface of the dial member 232.
The dial member 232 is fixed to the shaft member 231 by fitting the other end of the shaft member 231 (the end portion on which the head portion 231a is not formed) into the fitting hole 232a.

The movable magnet 235 is an embodiment of the movable magnet according to the present invention.
The movable magnet 235 is a substantially rectangular parallelepiped permanent magnet.
The movable magnet 235 is formed with a screw hole 235a that is a hole penetrating vertically.
The upper end portion of the screwing hole 235a is expanded in diameter upward.
A female screw is formed on the inner peripheral surface of the screw hole 235a.
The movable magnet 235 is screwed into the shaft member 231 by meshing the female screw formed on the inner peripheral surface of the screw hole 235a with the male screw formed on the outer peripheral surface of the shaft member 231.

As shown in FIGS. 11 and 12, the movable magnet unit 230 is placed in a space surrounded by the top plate 211, the front wall plate 212, the rear wall plate 213, the left wall plate 214 and the right wall plate 215, and the lid 220 of the main body 210. Be contained.
At this time, the axial direction of the shaft member 231 which is one of the members constituting the movable magnet unit 230 is perpendicular to the contact surface 211 a of the top plate 211 of the main body 210.
Further, the left side surface of the movable magnet 235 which is one of the members constituting the movable magnet unit 230 is in contact with the right side surface of the partition plate 218b of the main body 210, and the right side surface of the movable magnet 235 is the left side of the partition plate 218c of the main body 210. The front surface of the movable magnet 235 contacts the inner wall surface 212a of the front wall plate 212, and the rear surface of the movable magnet 235 contacts the inner wall surface 213a of the rear wall plate 213.
Further, the lower surface of the dial member 232, which is one of the members constituting the movable magnet unit 230, abuts on a ring-shaped protrusion 221 formed on the lid 220, and the peripheral portion of the dial member 232 has a notch 212b and a notch. A portion protruding from the notch 213b to the outside and having a notch 212b formed in the front wall plate 212 of the main body 210 and a notch 213b formed in the rear wall plate 213 are formed at the peripheral portion of the upper panel surface of the dial member 232. Abut.

  Accordingly, the movement of the shaft member 231 and the dial member 232 in the vertical direction (the movement of the shaft member 231 in the axial direction) is restricted, and the movement of the movable magnet unit 230 in the front-rear direction and the left-right direction is restricted. The rotation of 235 about the shaft member 231 (relative rotation with respect to the main body 210) is restricted, and the shaft member 231 is rotatably supported by the main body 210 via the movable magnet 235.

As shown in FIGS. 11 and 12, when the operator touches and turns the dial member 232 that protrudes from the notches 212b and 213b and is exposed to the fingers, the dial member 232 and the shaft member 231 are integrated. Rotate to.
When the shaft member 231 rotates, the movable magnet 235 screwed to the shaft member 231 moves in the vertical direction, that is, the axial direction of the shaft member 231.
As a result, the distance from the contact surface 211a of the main body 210 to the movable magnet 235 changes, and the magnetic force acting between the object to be attracted contacting the contact surface 211a and the movable magnet 235, and hence the magnet catch 200 Adsorption power changes.

The fixed magnets 241, 242, 243, and 244 are one embodiment of the fixed magnet according to the present invention, and all are permanent magnets having a substantially rectangular parallelepiped shape.
As shown in FIG. 11, the fixed magnets 241, 242, 243, and 244 are surrounded by the top plate 211, the front wall plate 212, the rear wall plate 213, the left wall plate 214 and the right wall plate 215, and the lid 220 of the main body 210. Stored in the space.

The pads 251 and 252 are plate-like members made of a foamable resin material (for example, polyurethane).
The pad 251 is sandwiched between the fixed magnets 241 and 242 and the lid 220 in a space surrounded by the top plate 211, the front wall plate 212, the rear wall plate 213, the left wall plate 214 and the right wall plate 215, and the lid 220 of the main body 210. It is housed in a position.
The pad 252 is sandwiched between the fixed magnets 243 and 244 and the lid 220 in a space surrounded by the top plate 211, the front wall plate 212, the rear wall plate 213, the left wall plate 214 and the right wall plate 215, and the lid 220 of the main body 210. It is housed in a position.
The basic configuration of the fixed magnets 241 242 243 244 and the pads 251 252 is substantially the same as the fixed magnets 141 142 143 144 and the pads 151 152 shown in FIG. Omitted.

As described above, the magnet catch 200 is
A main body 210 having a top plate 211 that forms an abutting surface 211a for abutting an object to be adsorbed, and fixed so as not to move with respect to the structure;
A male screw is formed on the outer peripheral surface, and the dial is fixed to the shaft member 231 rotatably supported by the main body 210 in a posture in which the axial direction is perpendicular to the contact surface 211a and exposed to the outside. A movable magnet unit 230 having a member 232 and a movable magnet 235 that is a permanent magnet screwed to the shaft member 231;
It comprises.
This configuration has the following advantages.
That is, by integrally rotating the shaft member 231 and the dial member 232, the movable magnet 235 moves in the vertical direction, that is, in a direction approaching or separating from the contact surface 211a, and the movable magnet is moved from the contact surface 211a. The distance to 235 changes.
As a result, it is possible to adjust (change) the magnetic force acting between the object to be attracted that is in contact with the contact surface 211a and the movable magnet 235, and hence the attractive force of the magnet catch 200.
Further, since the dial member 232 is exposed to the outside of the main body 210, even if the magnet catch 200 is fixed to a structure or the like, the operator can easily rotate the dial member 232 without using a tool or the like. It is possible to easily adjust the attractive force of the magnet catch 200 while maintaining the position of the contact surface 211a.

The main body 210 of the magnet catch 200 is fixed to the top plate 211 and forms a side wall plate that is perpendicular to the contact surface 211a (in this embodiment, the front wall surface 212 having the inner wall surface 212a and the inner wall surface 213a are Having a rear wall 213 corresponding thereto)
When the movable magnet 235 contacts the inner wall surface of the side wall plate, the rotation of the movable magnet 235 about the shaft member 231 (relative rotation with respect to the main body 210) is restricted.
With this configuration, when the shaft member 231 and the dial member 232 rotate integrally, the movable magnet 235 moves in a direction toward or away from the contact surface 211a. Can be adjusted (changed).

The magnet catch 200 is
Fixed magnets 241, 242, 243, and 244 that are permanent magnets fixed to the main body 210 at a predetermined distance from the contact surface 211 a are provided.
With this configuration, the change in the attracting force of the magnet catch 200 accompanying the change in the distance from the contact surface 211a to the movable magnet 235 is made relatively gradual, and as a result, the movable magnet 235 is separated from the contact surface 211a. It is possible to suppress a sudden decrease in the attractive force of the magnet catch 200 when it moves in the direction of movement.

The magnet catch 200 is
The fixed magnets 241, 242, 243, and 244 are composed of a plurality of permanent magnets (in the case of this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 241, 242, 243, and 244 are detachably fixed to the main body 210.
With this configuration, the fixed magnets 241, 242, 243, and 244 can be appropriately removed from the main body 210 to adjust the attractive force of the magnet catch 200.

The magnet catch 200 is
The fixed magnets 241, 242, 243, and 244 are composed of a plurality of permanent magnets (in the case of this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 241, 242, 243, and 244 are arranged at positions sandwiching the movable magnet 235 of the movable magnet unit 230 when viewed from the direction perpendicular to the contact surface 211a (in this embodiment, fixed magnets are fixed). The magnets 241 and 242 are disposed on the left side of the movable magnet 235, and the fixed magnets 243 and 244 are disposed on the right side of the movable magnet 235).
With this configuration, even when the distance from the contact surface 211a to the movable magnet 235 changes, the symmetry of the surface distribution on the contact surface 211a of the attracting force of the magnet catch 200 is maintained (this embodiment). In the case of left-right symmetry).

Below, the magnet catch 300 which is 3rd embodiment of the magnet catch based on this invention is demonstrated using FIGS. 14-16.
As shown in FIGS. 14 and 15, the magnet catch 300 mainly includes a main body 310, a lid 320, a movable magnet unit 330, fixed magnets 341, 342, 343, and 344 and pads 351 and 352.

The main body 310 is an embodiment of the main body according to the present invention.
The main body 310 is a main structure of the magnet catch 300 and is fixed to the structure so as not to move.
As shown in FIGS. 14 and 15, the main body 310 is mainly composed of a top plate 311, a front wall plate 312, a rear wall plate 313, a left wall plate 314, a right wall plate 315, a left side plate 316, a right side plate 317, and a partition plate 318a. -It has 318b, 318c, 318d.

The upper plate surface of the top plate 311 forms a contact surface 311a.
A notch 312b is formed at a substantially horizontal center of the lower half of the front wall plate 312.
A notch 313b is formed in the left and right center of the lower half of the rear wall plate 313.
A long hole 316a is formed in the port side plate 316, and a long hole 317a is formed in the right side plate 317.
Since the basic configuration of the main body 310 is substantially the same as the main body 110 shown in FIG. 3, detailed description of the main body 310 is omitted.

As shown in FIGS. 14 and 15, the lid 320 is a plate-like member that closes the opening 319 by being fitted into the opening 319 of the main body 310.
A fixing hole 322 that penetrates the upper and lower plate surfaces is formed in the lid 320. The lower end portion of the fixed hole 322 is expanded in diameter downward.
A female screw is formed on the inner peripheral surface of the fixing hole 322.

The movable magnet unit 330 is an embodiment of the movable magnet unit according to the present invention.
As shown in FIG. 16, the movable magnet unit 330 mainly includes a shaft member 331, a dial member 332, and a movable magnet 335.

The shaft member 331 is an embodiment of the shaft member according to the present invention.
The shaft member 331 is a substantially cylindrical member having a male screw formed on the outer peripheral surface.
A substantially conical head 331 a is formed at one end of the shaft member 331.

The dial member 332 is an embodiment of the dial member according to the present invention.
The dial member 332 is a disk-shaped member. The dial member 332 is formed with a screw hole 332a which is a hole penetrating the center of the upper and lower board surfaces.
A female screw is formed on the inner peripheral surface of the screw hole 332a.
Further, serrations (notches) for preventing slippage are formed on the peripheral end surface of the dial member 332.
The dial member 332 is screwed into the shaft member 331 when the female screw formed on the inner peripheral surface of the screw hole 332a and the male screw formed on the outer peripheral surface of the shaft member 331 are engaged with each other.

The movable magnet 335 is an embodiment of the movable magnet according to the present invention.
The movable magnet 335 is a substantially cylindrical permanent magnet. The movable magnet 335 is formed with a through hole 335a which is a hole penetrating vertically.
The lower surface of the movable magnet 335 is fixed to the upper surface of the dial member 332 with an adhesive.
When the movable magnet 335 is fixed to the dial member 332, the through hole 335 a formed in the movable magnet 335 overlaps with the screwing hole 332 a formed in the dial member 332 in plan view.
A shaft member 331 is rotatably and slidably inserted in the through hole 335a of the movable magnet 335.

As shown in FIGS. 14 and 15, the movable magnet unit 330 is placed in a space surrounded by the top plate 311, the front wall plate 312, the rear wall plate 313, the left wall plate 314 and the right wall plate 315, and the lid 320 of the main body 310. Be contained.
At this time, the shaft member 331, which is one of the members constituting the movable magnet unit 330, is screwed into a fixing hole 322 formed in the lid 320, so that it cannot rotate relative to the lid 320 and thus the main body 310. Fixed to. The head portion 331 a of the shaft member 331 is accommodated in the enlarged diameter portion formed at the lower end portion of the fixing hole 322 of the lid 320 and does not protrude below the lid 320.
Further, the axial direction of the shaft member 331 fixed so as not to rotate relative to the lid 320 is perpendicular to the contact surface 311 a of the top plate 311 of the main body 310.
Further, the peripheral edge portion of the dial member 332 protrudes from the notch 312b and the notch 313b. In the present embodiment, since the notch 312b and the notch 313b have a certain height in the vertical direction, the peripheral edge portion of the dial member 332 contacts the portion corresponding to the notch 312b and the notch 313b in the main body 310. There is nothing.

In the present embodiment, the shaft member 331 is fixed to the lid 320, but the present invention is not limited to this.
For example, the shaft member 331 may be directly fixed to the main body 310 by forming a hole (dent) into which the shaft member 331 is screwed on the lower plate surface of the top plate 311 of the main body 310.

As shown in FIGS. 14 and 15, when the operator touches the dial member 332 that protrudes from the notches 312 b and 313 b and is exposed and turns with the finger, the dial member 332 and the movable magnet 335 are covered with the lid 320. Then, it rotates integrally around the shaft member 331 fixed to the main body 310 and moves in the vertical direction, that is, the axial direction of the shaft member 331.
As a result, the distance from the contact surface 311a of the main body 310 to the movable magnet 335 changes, and the magnetic force acting between the object to be attracted that is in contact with the contact surface 311a and the movable magnet 335, and thus the magnet catch 300's. Adsorption power changes.

The fixed magnets 341, 342, 343, and 344 are embodiments of the fixed magnet according to the present invention, and are all permanent magnets having a substantially rectangular parallelepiped shape.
As shown in FIG. 14, the fixed magnets 341, 342, 343, and 344 are attached to the top plate 311, the front wall plate 312, the rear wall plate 313, the left wall plate 314 and the right wall plate 315, and the opening 319 of the main body 310. It is accommodated in a space surrounded by the fitted lid 320.

The pads 351 and 352 are plate-like members made of a foamable resin material (for example, polyurethane).
The pad 351 is sandwiched between the fixed magnets 341 and 342 and the lid 320 in a space surrounded by the top plate 311, the front wall plate 312, the rear wall plate 313, the left wall plate 314 and the right wall plate 315, and the lid 320 of the main body 310. It is housed in a position.
The pad 352 is sandwiched between the fixed magnets 343 and 344 and the lid 320 in the space surrounded by the top plate 311, the front wall plate 312, the rear wall plate 313, the left wall plate 314 and the right wall plate 315, and the lid 320 of the main body 310. It is housed in a position.
The basic configuration of the fixed magnets 341, 342, 343, 344 and the pads 351, 352 is substantially the same as the fixed magnets 141, 142, 143, 144 and the pads 151, 152 shown in FIG. Omitted.

As described above, the magnet catch 300 is
A main body 310 that has a top plate 311 that forms an abutting surface 311a for abutting an object to be adsorbed, and is fixed so as not to move with respect to the structure;
A male screw is formed on the outer peripheral surface and the shaft member 331 is fixed to the main body 310 (through the lid 320) in a posture in which the axial direction is perpendicular to the contact surface 311a. A movable magnet unit 330 having an exposed dial member 332 and a movable magnet 335 which is a permanent magnet fixed to the dial member 332;
It comprises.
This configuration has the following advantages.
That is, when the dial member 332 and the movable magnet 335 are integrally rotated with respect to the shaft member 331, the movable magnet 335 moves in the vertical direction, that is, in the direction approaching or separating from the contact surface 311a. The distance from the contact surface 311a to the movable magnet 335 changes.
As a result, it is possible to adjust (change) the magnetic force acting between the object to be attracted that is in contact with the contact surface 311a and the movable magnet 335, and hence the attractive force of the magnet catch 300.
Further, since the dial member 332 is exposed to the outside of the main body 310, the operator can easily rotate the dial member 332 without using a tool or the like even when the magnet catch 300 is fixed to a structure or the like. It is possible to easily adjust the attractive force of the magnet catch 300 while maintaining the position of the contact surface 311a.

The magnet catch 300 is
Fixed magnets 341, 342, 343, and 344, which are permanent magnets fixed to the main body 310 at a predetermined distance from the contact surface 311a, are provided.
With this configuration, the change in the attracting force of the magnet catch 300 accompanying the change in the distance from the contact surface 311a to the movable magnet 335 is made relatively gradual, and as a result, the movable magnet 335 is separated from the contact surface 311a. It is possible to suppress a sudden drop in the attractive force of the magnet catch 300 when it moves in the direction of movement.

The magnet catch 300 is
The fixed magnets 341, 342, 343, and 344 are composed of a plurality of permanent magnets (in the case of this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 341, 342, 343, and 344 are detachably fixed to the main body 310.
With this configuration, the fixed magnets 341, 342, 343, and 344 can be appropriately removed from the main body 310 to adjust the attractive force of the magnet catch 300.

The magnet catch 300 is
The fixed magnets 341, 342, 343, and 344 are composed of a plurality of permanent magnets (in the case of this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 341, 342, 343, 344 are arranged at positions sandwiching the movable magnet 335 of the movable magnet unit 330 when viewed from the direction perpendicular to the contact surface 311a (in this embodiment, fixed magnets are fixed). The magnets 341 and 342 are arranged on the left side of the movable magnet 335, and the fixed magnets 343 and 344 are arranged on the right side of the movable magnet 335).
With this configuration, even when the distance from the contact surface 311a to the movable magnet 335 changes, the symmetry of the surface distribution on the contact surface 311a of the attracting force of the magnet catch 300 is maintained (this embodiment). In the case of left-right symmetry).

Below, the magnet catch 400 which is 4th embodiment of the magnet catch based on this invention is demonstrated using FIGS.
As shown in FIGS. 17 and 18, the magnet catch 400 mainly includes a main body 410, a lid 420, a movable magnet unit 430, fixed magnets 441, 442, 443, and 444 and pads 451 and 452.

The main body 410 is an embodiment of the main body according to the present invention.
The main body 410 is a main structure of the magnet catch 400, and is fixed to the structure so as not to move.
As shown in FIGS. 17 and 18, the main body 410 mainly includes a top plate 411, a front wall plate 412, a rear wall plate 413, a left wall plate 414, a right wall plate 415, a left side plate 416, a right side plate 417, and a partition plate 418a. · 418b · 418c · 418d.

The upper plate surface of the top plate 411 forms a contact surface 411a.
A notch 412b is formed in the left and right center of the lower half of the front wall plate 412.
A notch 413b is formed in the left and right center of the lower half of the rear wall plate 413.
A long hole 416a is formed in the left side plate 416, and a long hole 417a is formed in the right side plate 417.
Since the basic configuration of the main body 410 is substantially the same as the main body 110 shown in FIG. 3, detailed description of the main body 410 is omitted.

As shown in FIGS. 17 and 18, the lid 420 is a plate-like member that closes the opening 419 by being fitted into the opening 419 of the main body 410.
A fixing hole 422 that penetrates the upper and lower plate surfaces is formed in the lid 420.
The lower end portion of the fixing hole 422 is enlarged in the downward direction. A female screw is formed on the inner peripheral surface of the fixing hole 422.

The movable magnet unit 430 is an embodiment of the movable magnet unit according to the present invention.
As shown in FIG. 19, the movable magnet unit 430 mainly includes a shaft member 431 and a movable magnet 435.

The shaft member 431 is an embodiment of the shaft member according to the present invention.
The shaft member 431 is a substantially cylindrical member having a male screw formed on the outer peripheral surface.
A substantially conical head 431 a is formed at one end of the shaft member 431.

The movable magnet 435 is an embodiment of the movable magnet according to the present invention.
The movable magnet 435 is a substantially cylindrical permanent magnet.
The movable magnet 435 is formed with a screw hole 435a which is a hole penetrating vertically.
A female screw is formed on the inner peripheral surface of the screw hole 435a.
When the internal thread formed on the inner peripheral surface of the screw hole 435a of the movable magnet 435 and the external thread formed on the outer peripheral surface of the shaft member 431 are engaged with each other, the movable magnet 435 is engaged with the shaft member 431.

As shown in FIGS. 17 and 18, the movable magnet unit 430 is disposed in a space surrounded by the top plate 411, the front wall plate 412, the rear wall plate 413, the left wall plate 414 and the right wall plate 415 of the main body 410, and the lid 420. Be contained.
At this time, the shaft member 431, which is one of the members constituting the movable magnet unit 430, is screwed into a fixing hole 422 formed in the lid 420, so that it cannot rotate relative to the lid 420 and thus the main body 410. Fixed to. The head portion 431 a of the shaft member 431 is accommodated in the enlarged diameter portion formed at the lower end portion of the fixing hole 422 of the lid 420 and does not protrude below the lid 420.
Further, the axial direction of the shaft member 431 fixed so as not to rotate relative to the lid 420 is perpendicular to the contact surface 411 a of the top plate 411 of the main body 410.
Furthermore, the outer peripheral surface of the movable magnet 435 is exposed to the outside from the notches 412b and 413b.

In the present embodiment, the shaft member 431 is fixed to the lid 420, but the present invention is not limited to this.
For example, the shaft member 431 may be directly fixed to the main body 410 by forming a hole (dent) into which the shaft member 431 is screwed on the lower plate surface of the top plate 411 of the main body 410.
In this embodiment, the outer peripheral surface of the movable magnet 435 does not protrude outside the main body 410 (front of the front wall plate 412 and rear of the rear wall plate 413), but the present invention is not limited to this.
For example, the upper ends of the cutout 412b and the cutout 413b reach the top plate 411 and the diameter of the movable magnet 435 is made larger than the distance from the front surface of the front wall plate 412 to the rear surface of the rear wall plate 413, thereby moving the movable magnet. The outer peripheral surface of 435 (a part thereof) may protrude to the outside of the main body 410.

As shown in FIGS. 17 and 18, when the operator touches and rotates the outer peripheral surface of the movable magnet 435 exposed to the outside from the notches 412 b and 413 b with the finger, the movable magnet 435 is fixed to the lid 420 and eventually the main body 410. The shaft member 431 rotates around the shaft member 431 and moves in the vertical direction, that is, in the axial direction of the shaft member 431.
As a result, the distance from the contact surface 411a of the main body 410 to the movable magnet 435 changes, and the magnetic force acting between the object to be attracted contacting the contact surface 411a and the movable magnet 435, and thus the magnet catch 400, Adsorption power changes.

The fixed magnets 441, 442, 443, and 444 are one embodiment of the fixed magnet according to the present invention, and all are permanent magnets having a substantially rectangular parallelepiped shape.
As shown in FIG. 17, the fixed magnets 441, 442, 443, and 444 are surrounded by a top plate 411, a front wall plate 412, a rear wall plate 413, a left wall plate 414 and a right wall plate 415, and a lid 420. Stored in the space.

The pads 451 and 452 are plate-like members made of a foamable resin material (for example, polyurethane).
The pad 451 is sandwiched between the fixed magnets 441 and 442 and the lid 420 in a space surrounded by the top plate 411, the front wall plate 412, the rear wall plate 413, the left wall plate 414 and the right wall plate 415 of the main body 410, and the lid 420. It is housed in a position.
The pad 452 is sandwiched between the fixed magnets 443 and 444 and the lid 420 in a space surrounded by the top plate 411, the front wall plate 412, the rear wall plate 413, the left wall plate 414 and the right wall plate 415, and the lid 420 of the main body 410. It is housed in a position.
The basic configuration of the fixed magnets 441, 442, 443, 444 and the pads 451, 452 is substantially the same as the fixed magnets 141, 142, 143, 144 and the pads 151, 152 shown in FIG. Omitted.

As described above, the magnet catch 400 is
A main body 410 having a top plate 411 that forms an abutting surface 411a for adsorbing an object to be abutted, and fixed so as to be immovable with respect to the structure;
A male screw is formed on the outer peripheral surface, and the shaft member 431 is fixed to the main body 410 (through the lid 420) in a posture in which the axial direction is perpendicular to the contact surface 411a. A movable magnet unit 430 having a movable magnet 435 which is a permanent magnet exposed to
It comprises.
This configuration has the following advantages.
That is, by rotating the movable magnet 435 relative to the shaft member 431, the movable magnet 435 moves in the vertical direction, that is, in a direction approaching or separating from the contact surface 411a, and the movable magnet 435 is moved from the contact surface 411a. The distance to change.
As a result, it is possible to adjust (change) the magnetic force acting between the object to be attracted that is in contact with the contact surface 411a and the movable magnet 435, and hence the attractive force of the magnet catch 400.
In addition, since the movable magnet 435 is exposed to the outside of the main body 410, even when the magnet catch 400 is fixed to a structure or the like, the operator can easily rotate the movable magnet 435 without using a tool or the like. It is possible to easily adjust the attracting force of the magnet catch 400 while maintaining the position of the contact surface 411a.

The magnet catch 400 is
Fixed magnets 441, 442, 443, and 444 which are permanent magnets fixed to the main body 410 at a predetermined distance from the contact surface 411a are provided.
With this configuration, the change in the attracting force of the magnet catch 400 due to the change in the distance from the contact surface 411a to the movable magnet 435 is made relatively gradual, so that the movable magnet 435 is separated from the contact surface 411a. It is possible to suppress a sudden decrease in the attractive force of the magnet catch 400 when it moves in the direction in which it moves.

The magnet catch 400 is
The fixed magnets 441, 442, 443, 444 are composed of a plurality of permanent magnets (in the case of this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 441, 442, 443, and 444 are detachably fixed to the main body 410.
With this configuration, it is possible to remove the fixed magnets 441, 442, 443, and 444 from the main body 410 as appropriate, and adjust the attracting force of the magnet catch 400.

The magnet catch 400 is
The fixed magnets 441, 442, 443, 444 are composed of a plurality of permanent magnets (in the case of this embodiment, a total of four permanent magnets),
A plurality of permanent magnets constituting the fixed magnets 441, 442, 443, and 444 are arranged at positions sandwiching the movable magnet 435 of the movable magnet unit 430 when viewed from the direction perpendicular to the contact surface 411a (in this embodiment, fixed magnets are fixed). The magnets 441 and 442 are disposed on the left side of the movable magnet 435, and the fixed magnets 443 and 444 are disposed on the right side of the movable magnet 435).
With this configuration, even when the distance from the contact surface 411a to the movable magnet 435 changes, the symmetry of the surface distribution on the contact surface 411a of the attractive force of the magnet catch 400 is maintained (this embodiment). In the case of left-right symmetry).

As described above, the magnet catch 100, the magnet catch 200, the magnet catch 300, and the magnet catch 400 are all
"A main body having a top plate that forms an abutting surface for the object to be adsorbed, and fixed so as not to move with respect to the structure;
A movable magnet supported by the main body and capable of changing a distance from the contact surface by moving forward and backward (moving in a direction toward or away from the contact surface);
A fixed magnet fixed to the main body and maintained at a distance from the contact surface;
It has the feature of “comprising”.
With this configuration, the change in the attractive force of the magnet catch 100, the magnet catch 200, the magnet catch 300, and the magnet catch 400 due to the change in the distance from the contact surface to the movable magnet is made relatively gradual. It is possible to suppress a sudden decrease in the attracting force of the magnet catch 100, the magnet catch 200, the magnet catch 300, and the magnet catch 400 when the magnet moves in a direction that moves backward (separates) from the contact surface. It is.

The perspective view which shows 1st embodiment of the magnet catch which concerns on this invention. The perspective view which similarly shows 1st embodiment of the magnet catch which concerns on this invention. 1 is a front sectional view showing a first embodiment of a magnet catch according to the present invention. The left side sectional view showing the first embodiment of the magnet catch concerning the present invention. The perspective view which shows the main body in 1st embodiment of the magnet catch which concerns on this invention. The perspective view which shows the cover in 1st embodiment of the magnet catch which concerns on this invention. The disassembled perspective view which shows the movable magnet unit in 1st embodiment of the magnet catch which concerns on this invention. The front sectional view showing the state where the movable magnet was separated from the contact surface in the first embodiment of the magnet catch according to the present invention. The perspective view which shows the fixed magnet in 1st embodiment of the magnet catch which concerns on this invention. The figure which shows the influence which the presence or absence of a fixed magnet exerts on the relationship between the distance from a contact surface to a movable magnet, and the attractive force of a magnet catch. Front sectional drawing which shows 2nd embodiment of the magnet catch which concerns on this invention. The left side sectional view showing the second embodiment of the magnet catch concerning the present invention. The disassembled perspective view which shows the movable magnet unit in 2nd embodiment of the magnet catch which concerns on this invention. Front sectional drawing which shows 3rd embodiment of the magnet catch which concerns on this invention. The left side sectional view showing a third embodiment of a magnet catch concerning the present invention. The disassembled perspective view which shows the movable magnet unit in 3rd embodiment of the magnet catch which concerns on this invention. Front sectional drawing which shows 4th embodiment of the magnet catch which concerns on this invention. The left side sectional view showing a 4th embodiment of a magnet catch concerning the present invention. The disassembled perspective view which shows the movable magnet unit in 4th embodiment of the magnet catch which concerns on this invention.

Explanation of symbols

100 Magnet catch (first embodiment)
DESCRIPTION OF SYMBOLS 110 Main body 111 Top plate 111a Contact surface 130 Movable magnet unit 131 Shaft member 132 Dial member 133 Screwing member 135 Movable magnet

Claims (19)

A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A shaft member rotatably supported on the main body in a posture in which a male screw is formed on the outer peripheral surface and an axial direction is perpendicular to the contact surface, and a dial member fixed to the shaft member and exposed to the outside A movable member having a movable member that is a permanent magnet fixed to the screw member, and a screw member that is screwed to the shaft member;
Magnet catch equipped with. The main body has a side wall plate that is fixed to the top plate and forms an inner wall surface perpendicular to the contact surface,
2. The magnet catch according to claim 1, wherein rotation of the screwing member about the shaft member is restricted when at least one of the screwing member or the movable magnet contacts an inner wall surface of the side wall plate.   The magnet catch according to claim 1 or 2, comprising a fixed magnet that is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 3, wherein a plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 3 or 4, wherein a plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit as viewed from a direction perpendicular to the contact surface. A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A shaft member rotatably supported on the main body in a posture in which a male screw is formed on the outer peripheral surface and an axial direction is perpendicular to the contact surface, and a dial member fixed to the shaft member and exposed to the outside And a movable magnet unit having a movable magnet that is a permanent magnet screwed to the shaft member;
Magnet catch equipped with. The main body has a side wall plate that is fixed to the top plate and forms an inner wall surface perpendicular to the contact surface,
The magnet catch according to claim 6, wherein rotation of the movable magnet around the shaft member is restricted when the movable magnet abuts against an inner wall surface of the side wall plate.   The magnet catch according to claim 6 or 7, comprising a fixed magnet that is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 8, wherein a plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 8 or 9, wherein a plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit as viewed from a direction perpendicular to the contact surface. A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A shaft member fixed to the main body in a posture in which an external thread is formed on an outer peripheral surface and an axial direction is perpendicular to the contact surface, a dial member screwed into the shaft member and exposed to the outside, and the dial A movable magnet unit having a movable magnet that is a permanent magnet fixed to the member;
Magnet catch equipped with.   The magnet catch according to claim 11, further comprising a fixed magnet that is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 12, wherein a plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 12 or 13, wherein a plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit as viewed from a direction perpendicular to the contact surface. A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A male member is formed on the outer peripheral surface and the shaft member is fixed to the main body in a posture in which the axial direction is perpendicular to the contact surface, and the movable member is a permanent magnet that is screwed to the shaft member and exposed to the outside. A movable magnet unit having a magnet;
Magnet catch equipped with.   The magnet catch according to claim 15, further comprising a fixed magnet that is a permanent magnet fixed to the main body at a position at a predetermined distance from the contact surface. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 16, wherein a plurality of permanent magnets constituting the fixed magnet are detachably fixed to the main body. The fixed magnet is composed of a plurality of permanent magnets,
The magnet catch according to claim 16 or 17, wherein a plurality of permanent magnets constituting the fixed magnet are arranged at positions sandwiching the movable magnet of the movable magnet unit as viewed from a direction perpendicular to the contact surface. A main body having a top plate that forms an abutment surface on which an object to be adsorbed abuts, and fixed so as to be immovable with respect to the structure;
A movable magnet supported by the main body and capable of changing a distance from the contact surface by moving forward and backward with respect to the contact surface;
A fixed magnet fixed to the main body and maintained at a distance from the contact surface;
Magnet catch equipped with.

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