TW202335001A - Magnetic Adsorbtion Device - Google Patents

Abstract

The present invention provides a magnetic adsorption apparatus which is simple in structure, small in size, capable of obtaining sufficient magnetic force, excellent in rotational operability, does not leak magnetic flux from the surface opposite to the adsorption part, and is easy to use. A pair of yokes are hold in the housing portion of the apparatus main body and are magnetized as N poles and S poles around the rare earth magnet block in the housing portion of the magnetic housing. It comprises a rotationally supported permanent magnet rotor and a handle portion connected to a shaft portion of the permanent magnet rotor on one longitudinal end and can be rotated in a degree smaller than 90. The plurality of magnetic circuits are a plurality of closed magnetic circuits separated by separators are respectively formed on the main body of the apparatus and the permanent magnet rotor. When the handle is rotated to the first position, the attractive force is generated between the magnetic components. The attractive force of the opposing magnetic body is released when the handle switches to the second position.

Description

Magnetic adsorption device

The present invention relates to a magnetic adsorption device that magnetically adsorbs magnetic elements through a magnetic circuit formed by magnetic lines of force generated by a permanent magnet.

The magnetic adsorption device includes: a device body having a receiving portion with a circular cross-section in the magnetic shell; and a permanent magnetic rotor rotatably supported in the receiving portion. The device body is magnetically divided into a pair of magnetic components by a pair of spacers provided in the magnetic housing. The permanent magnet rotor integrally includes a permanent magnet magnetized as N pole or S pole and a yoke. One side of the device body has an adsorption part to adsorb magnetic objects such as workpieces, iron plates, steel materials, etc.

Figures 15A and 15B show an example of a magnetic adsorption device. The magnetic shell-shaped device body 101 is provided with a receiving portion 102 with a circular cross-section therein. The device body 101 is magnetically divided into a pair of magnetic components by a pair of partitions 103 (for example, made of aluminum material) arranged at opposite positions. One surface (bottom surface) of the device body 101 has an adsorption portion 101a that adsorbs magnetic objects such as workpieces, iron plates, and steel materials. In addition, provided in the adsorption part 101a and The partition body 103 on the opposite surface portion 101b is provided with screw holes for mounting.

The permanent magnetic rotor 104 is formed by stacking and threading yokes 106 on both sides (N pole surface and S pole surface) of a plate-shaped permanent magnetic body 105 such as a ferrite magnetic body or a rare earth magnetic block. The surface of the yoke 106 facing the receiving portion is formed into an arc-shaped surface. The permanent magnet rotor 104 is rotatable between a first position and a second position by a crossbar (not shown) extending outside the device body 101 . The rotation angle of the permanent magnetic rotor 104 is designed to be within the range of 90°~100° from the center.

Figure 15A shows the permanent magnet rotor 104 in a first position. The magnetic force lines generated from the N-pole side yoke 106 pass through the opposite device body 101, pass through the outside of the separator 103 provided on the adsorption part 101a and the opposite surface 101b, pass through the device body 101, and form a magnetic circuit M respectively. , returns to the S pole side yoke 106. At this time, the device body 101 is attracted and held by a magnetic body (not shown) arranged to face the attracting portion 101a.

Figure 15B shows the permanent magnet rotor 104 in the second position. When the magnetic field lines generated from the N-pole side yoke 106 are viewed inward from the side of the permanent magnet 105, a plurality of closed magnetic loops M' are formed, and return to the S-pole side yoke 106 through the opposite device body 101. At this time, the magnetic field lines will not leak to the outside of the adsorption part 101a, and the device body 101 will not be adsorbed by the magnetic body (not shown) arranged opposite to the adsorption part 101a.

In addition, the applicant also proposed a magnetic adsorption device, in which the attraction is applied by rotating a permanent magnetic rotor at a rotation angle less than 90°. Gravity (Patent Document 1; Japanese Patent Application Publication No. 2005-19551).

Advanced technical documents

[Patent Document 1] JP-A-2005-19551.

However, the magnetic adsorption device of the above-mentioned Patent Document 1 includes a permanent magnet assembly in a circular cross-sectional hole extending through the magnetic circuit block in the longitudinal direction, and is mounted by chamfering a portion of the magnetic circuit block. to attach. The magnetic adsorption surface is formed by a pair of bases fixed by welding or bolts. Also, in the permanent magnet assembly, a pair of arc-shaped permanent magnets having the same curvature as the inner surface of the magnetic pole element is attached to the outer peripheral surface of the cylindrical magnetic pole element. A rod-shaped handle is connected to one longitudinal end of the magnetic component. The rod-shaped handle rotates at an angle of less than 90° and performs adsorption and release switching actions in the first groove and the second groove of the end plates at both ends. In this way, the magnetizing surface of the magnetic circuit block requires man-hours such as chamfering the mounting surface and welding of the base, thus increasing the number of parts and processes, and increasing the production cost.

Furthermore, as in the magnetic adsorption device shown in Figures 15A and 15B, when the rare earth magnetic block is used for the permanent magnet rotor 104, the rotational operation angle of the crossbar is 90° to 100° at the central angle, so the rotation The operation volume is large. Poor operability because large turning force is required. In addition, since the permanent magnet body 105 and the yoke 106 are overlapped and screwed on both sides thereof, the number of parts increases and screw hole processing is required, resulting in the permanent magnet body 105 The magnetism decreases. In addition, in the magnetic adsorption device shown in FIG. 15A, when the adsorption part 101a of the device body 101 is adsorbed by the magnetic member, a magnetic circuit M is formed on the side of the opposite surface 101b of the adsorption part 101a, and the magnetic field lines leak to the outside. When When the opposing surface portion 101b is used as a mounting portion of an instrument such as a measuring instrument, magnetic flux leakage prevention measures are required. Furthermore, since the structurally weak partition 103 is provided with screw holes, the strength may be reduced.

In view of this, the present invention is proposed to solve the above problems. Its purpose is to obtain sufficient magnetic force with a simple structure and small size, have good rotation operability, and not emit radiation from the opposite surface of the adsorption part. Magnetic field lines. A magnetic adsorption device that does not leak electricity and is easy to use is provided.

In order to achieve the above object, the magnetic adsorption device of the present invention has the following structure. A device body, in which a plurality of magnetic circuits are formed by a plurality of separators arranged in a receiving portion with a circular cross-section inside the magnetic block, and an adsorption portion for mutual adsorption with the magnetic element is formed across the plurality of separators. ; And, a cover portion used to close the opening of the device body shell portion; and a base portion accommodated in the device body; the receiving portion of the device body is provided with the rare earth magnetic block as the center and is rotatably supported on the said device body; A rotating part of a permanent magnetic rotor inside a magnetic block that is magnetized to N pole or S pole; a handle part connected to the shaft part on one end side of the length direction of the permanent magnetic rotor and assembled into an operating part exposed from the cover part . Rotate the handle so that The permanent magnetic rotor rotates at a predetermined angle less than 90° with respect to the central angle, so that the magnetic lines of force form a plurality of magnetic circuits leaking outward from the plurality of separators from the device body, so that the base can use the adsorption portion The first position of the magnetic element adsorbed to the opposite surface is switched to form a plurality of magnetic closed magnetic circuits separated by a plurality of separators between the device body and the permanent magnetic rotor, and the magnetism of the base part and the opposite surface is released. It is characterized by the second position where the adsorption of the component is released.

Accordingly, the device body has a plurality of magnetic circuit adsorption portions formed in a part of the magnetic block, has a receiving portion with a circular cross-section inside the magnetic block, and a plurality of separators to make a plurality of magnetic pole elements magnetic. Separation can reduce the number of parts and processing steps and simplify the structure. In addition, by using a rotatably supported permanent magnetic rotor, a pair of yokes magnetized to N poles or S poles with the rare earth magnetic block as the center face the inner surface of the housing portion of the magnetic block to form a rotatable structure. The ground-supported permanent magnetic rotor can obtain sufficient magnetic force even if it is only a small diameter. A handle portion is provided at one longitudinal end of the permanent magnet rotor that is connected to the shaft portion and the operating portion is exposed from the cover. This allows the permanent magnet rotor contained in the device body to rotate within a certain range at an angle of less than 90°. The base can switch between the adsorption part and the magnetic member that adsorbs and releases the opposite magnetic element, thereby improving the rotation operability.

Preferably, each of the pair of magnetic yokes has an inverted shape formed by cutting an arc-shaped surface in the receiving portion of the magnetic housing. corner. When the handle portion is placed in the first position, the magnetized boundary portion of the rare earth magnetic block is disposed opposite to the first separator provided in the adsorption portion, and each chamfered portion faces the second separator respectively. A plurality of magnetic loops are formed that leak magnetic lines of force outside the device body. As a result, when the handle part is in the first position, the magnetic field lines generated from the N-pole side yoke pass through the magnetic housing on the opposite surface, pass through the outside of the first separator, pass through the magnetic housing, and return to the S-pole side yoke to form a magnetic circuit. . At this time, the base part can be attracted and held by the magnetic body facing the attracting part. In addition, the magnetic field lines generated from the N-pole side yoke pass through the magnetic housing on the opposite surface, pass through the outside of the second separator, and return to the S-pole side yoke through the magnetic housing to form a magnetic circuit. In addition, since the first partition body and the second partition system are arranged at a predetermined angle of less than 180°, magnetic lines of force can be prevented from leaking out of the device body from the surface of the device opposite to the body adsorption portion.

Preferably, when the handle portion is in the second position, the arc surfaces of the pair of magnetic yokes are respectively arranged opposite to the first separator or the second separator provided in the magnetic shell, so that the magnetic shell and There is no leakage of magnetic lines of force between the permanent magnetic rotors, and each of them forms a plurality of magnetic closed loops. Accordingly, when the handle is in the second position, the magnetic lines of force generated from the N-pole side magnetic yoke return to the S-pole side magnetic block through the oppositely arranged magnetic housing, forming a plurality of closed magnetic circuits, in which the base is not attracted. On the magnetic body facing the adsorption part.

a first separator and a second separator that magnetically separate the magnetic housing The spacers are arranged at a predetermined angle with a center angle less than 180°, and thin-walled portions that may have a thin plate thickness are respectively provided on adjacent side surfaces of the magnetic housing. Accordingly, by setting the central angle of the first separator and the second separator that magnetically divides the magnetic housing to a predetermined angle less than 180°, the magnetic field lines are transmitted from the opposite side of the device body to the adsorption part, and leakage to the adsorption part can be prevented. The outside of the device body, and screw holes can be machined for mounting in a magnetic housing with a strong structure in addition to the divider, thus also increasing the mounting strength. In addition, when forming the receiving portion and the adsorbing portion of the magnetic shell, the first separator and the second separator can be processed into one body by cutting, molding, etc., thereby reducing the number of parts and simplifying the structure.

The gap portion forming the thin wall portion can also be used as a positioning hole, so that the boss that closes the cover portion of the receiving portion of the magnetic housing is inserted into the positioning hole. Accordingly, the screw holes used to fix the cover to the device body can be omitted, improving the ease of assembly and increasing the magnetic field lines passing through the magnetic housing.

The side surface of the magnetic housing may form a curved surface continuously with the thin-walled portion of the second separator. Accordingly, even if the magnetic workpiece is placed adjacent to the side surface of the magnetic housing, it is possible to prevent the magnetic workpiece from being inadvertently attracted to areas other than the adsorption surface by providing an escape space with a curved surface.

The first separator and the second separator that magnetically separate the magnetic housing are configured at a predetermined angle less than 180° with respect to the central angle, and the non-magnetic material may be placed between adjacent sides of the magnetic housing. in this way, By inserting non-magnetic material (for example, aluminum material) between adjacent sides of the magnetic housing, the magnetic housing can be divided into a plurality of magnetic parts in the same manner as the thin-walled portion. In this case, it is also possible to prevent the magnetic field lines from leaking out of the device body from the side opposite to the adsorption part, and to structurally process the screw holes for mounting on the ferromagnetic casing with a structure other than the separator. Therefore, , its installation strength can also be improved.

The handle connected to the permanent magnetic rotor can rotate (forward and reverse) within a central angle of 60° to 70°. Therefore, even if a rare earth magnetic block is used for the permanent magnetic rotor, the operability of the handle to be turned by the operator can be improved upward.

The base portion is one side of the device body that forms an adsorption portion for adsorbing the magnetic component, and the adsorption portion and the opposite surface can be used as a mounting portion for the mounted component. Therefore, when the device is installed on the side opposite to the adsorption part of the device body with a magnetic casing, there will be no leakage of magnetic lines of force, and no special countermeasures are required during installation. It can be used easily and has wide versatility. .

Each of the pair of magnetic yokes has a chamfered portion, and the chamfered portions are respectively formed by chamfering an arcuate surface opposed to the inner surface of the receiving portion of the magnetic cylinder. When the handle portion is in the first position, the magnetized boundary portion of the rare earth magnetic block is arranged to face the first separator provided in the adsorption portion, and any one of the chamfered portions is arranged to be in contact with the second separator. Relatively, each forms a plurality of magnetic gas loops that can leak magnetic lines of force from the end face of the magnetic cylinder. road. Therefore, when the handle is in the first position, the magnetic lines of force generated from the N-pole side yoke pass through the first separator, cross the second separator, and return to the S-pole side yoke, forming a plurality of magnetic circuits. At this time, the base can be adsorbed and fixed to the magnetic component opposite to the end surface of the magnetic cylinder. According to this, one longitudinal end of the magnetic cylinder serves as the adsorption part, and the handle part is provided at the other longitudinal end of the magnetic cylinder. It can be installed even in a place with a narrow adsorption area.

When the handle is in the second position, the magnetic poles of the rare earth magnetic block are arranged to face the first separator or the second separator respectively, so that there is no leakage between the magnetic cylinder and the permanent magnetic rotor. Magnetism can form closed magnetic closed loops respectively. Therefore, when the handle is in the second position, a plurality of closed magnetic circuits are formed, in which the magnetic lines of force generated from the N-pole side yoke return to the S-pole side yoke through the opposite magnetic cylinder, forming a plurality of closed magnetic circuits respectively. loop. At this time, since the magnetic field lines do not leak from the magnetic cylinder, they are not attracted by the magnetic component disposed facing the end surface of the magnetic cylinder.

The shaft at one longitudinal end of the permanent magnetic rotor is connected to the rotating plate and is rotatably disposed at one end of the magnetic cylinder. Accordingly, the rotating plate is connected to the permanent magnetic rotor and arranged at one end of the magnetic cylinder. The cover overlaps the rotating plate and is installed on the magnetic cylinder. The installation area of the rotating plate that becomes the operating part does not need to be squeezed.

The cover part may be disposed on the side opposite to the adsorption part on the other end side of the magnetic cylinder to serve as a mounting surface for the mounted component. In this case, since the cover portion also serves as a mounting surface for the mounted component, it can take up less space. By arranging the magnetic adsorption device according to the installation area, the faucet hole can be provided in the relatively strong cover part as the mounting surface.

Preferably, the permanent magnetic rotor system is rotatably supported via a bearing provided on at least one end side in the receiving portion of the device body. The permanent magnet rotor system has magnetic yokes arranged on both sides of a rare earth magnetic block. Compared with ferrite magnets, the magnetic attraction force is greater, and the rotation operability is likely to be deteriorated. However, inserting a bearing on at least one end side can improve the rotation performance. Operability.

The present invention can provide a magnetic adsorption device with simple structure, small volume, sufficient magnetic force, good rotation operability, and no magnetic leakage on the surface opposite to the holding part.

1: Magnetic adsorption device

2:Device body

2a: Containment Department

2b: Magnetic shell

2c: First separator

2d: second divider

2e: Adsorption part

2f: Installation Department

2g: screw hole

2h, 2i: boss hole

2j: Bearing recess

2k: side

2m: curved surface

2p: screw hole

2q: Gap part

3: Cover part

3a, 3b: boss part

3c: Fitting cylinder

3d: Incision recess

3e: Pull out the hole

3f: screw hole

4:Base

5:Permanent magnetic rotor

5a: Rare earth magnetic block

5b, 5c: yoke

5b1, 5c1: chamfering step

5d: Insertion hole

5e, 5f: Bearing mounting part

5g: chimeric hole

5h:Tapered shaft

6: handle

6a:rod body

6b: Fitting convex part

6c: Arc-shaped protrusion

6d: long hole

6e: Fitting recess

6f: Outer peripheral surface

7a, 7b: rolling bearings

8: Magnetic components

M1: First magnetic circuit

M2: Second magnetic circuit

M1 ' : first closed magnetic circuit

M2 ' : The second closed magnetic circuit

Figures 1A to 1C are front views, top views and cross-sectional views viewed from the arrow A-A direction of the first embodiment of the magnetic adsorption device of the present invention.

Figures 2A and 2B are explanatory views of the magnetic circuit formed in the device body according to the rotation position of the permanent magnetic rotor in the first embodiment of the magnetic adsorption device of the present invention.

Figures 3A and 3B are front views and top views of the device body used in the first embodiment of the magnetic adsorption device of the present invention.

Figures 4A and 4B show the magnetic adsorption device of the present invention in the first practical application. Front view and top view of the yoke used in the example.

Figure 5 is an exploded perspective view of the first embodiment of the magnetic adsorption device of the present invention.

Figures 6A to 6C are front cross-sectional views, top views and cross-sectional views viewed from the arrow B-B direction of the second embodiment of the magnetic adsorption device of the present invention.

Figures 7A and 7B are front views and top views of the device body used in the magnetic adsorption device according to the second embodiment of the present invention.

Figures 8A and 8B are front views and top views of the magnetic yoke used in the second embodiment of the magnetic adsorption device of the present invention.

Figure 9 is an exploded perspective view of the second embodiment of the magnetic adsorption device of the present invention.

Figure 10 is an explanatory diagram of a modification of the device body used in the first and second embodiments of the magnetic adsorption device of the present invention.

Figures 11A and 11B are explanatory diagrams illustrating the rotation position of the permanent magnetic rotor used in the third embodiment of the magnetic adsorption device of the present invention to form a magnetic circuit within the device body.

Figures 12A and 12B are a perspective view and an exploded perspective view of a magnetic adsorption device according to the fourth embodiment of the present invention.

Figures 13A to 13C show the fourth implementation of the magnetic adsorption device of the present invention. Example: front view, top view and rear view of the device body, front view and top view of the handle.

Figures 14A to 14E are front views, bottom views, horizontal cross-sectional views of the magnetic adsorption device of the present invention, and illustrations of the magnetic circuit of the permanent magnetic rotor formed in the device body according to the rotation position of the permanent magnetic rotor.

Figures 15A and 15B illustrate the magnetic circuit formed in the device body based on the rotational position of the permanent magnetic rotor of the current magnetic attraction device.

[First Embodiment]

The schematic structure of the magnetic adsorption device according to the first embodiment will be described below with reference to FIGS. 1A to 5 . As shown in Figures 1A to 1C, the magnetic adsorption device 1 includes a device body 2. The device body 2 is in a magnetic housing 2b (magnetic block) and has a receiving portion 2a with a circular cross-section , and a seal for closing. The base 4 of the cover 3 of the opening of the accommodation part 2a and a pair of magnetic yokes magnetized to N pole or S pole with the rare earth magnetic block 5a as the center are respectively arranged oppositely in the accommodation part of the device body and become permanent. the magnetic rotor 5; and the handle portion 6 connected to the shaft portion of a longitudinal end side of the permanent magnetic rotor 5, and the permanent magnetic rotor 5 has a rod 6a (operating portion) extending from the outside of the cover portion 3.

The composition of each part will be explained below. As shown in Figures 2A and 2B, the device body 2 uses a magnetic case 2b made of iron, for example. The magnetic housing 2b is divided into a plurality of separators (a first separator 2c, a second separator 2d) Divide into multiple magnetic components to form multiple magnetic circuits. The device body 2 is formed with an adsorption portion 2e that adsorbs the opposing magnetic element 8 via the first separator 2c (see Fig. 2A). The adsorption part 2e is formed on a continuous plane with the inclined surfaces chamfered into a splay on both sides via the thin-walled first partition 2c sandwiched adjacent to the accommodating part 2a.

As shown in FIG. 3B , the first partition body 2 c and the second partition body 2 d are formed by thin-walled portions in which adjacent side surfaces of the magnetic case 2 b constituting the device body 2 are thinned. The first separator 2c and the second separator 2d are formed by gaps such as circular holes or grooves formed on adjacent side surfaces of the magnetic housing 2b. In this case, when the accommodating portion 2a and the adsorbing portion 2e of the device body 2 are formed by cutting processing, molding processing, etc., the first partition body 2c and the second partition body 2d can be processed integrally, and the number of processed parts can be reduced. parts and simplify the manufacturing process and structure. Furthermore, as will be described later, the first partition body 2c and the second partition body 2d are arranged at a predetermined angle less than 180° (for example, the central angle is in the range of 145° to 150°), so that adsorption of the device body 2 can be prevented. The magnetic field lines of the portion 2e leak from the opposite surface portion (mounting portion 2f).

Furthermore, a screw hole 2g (screw hole) is formed in the mounting portion 2f as the facing surface of the suction portion 2e. For example, when a holder for holding a dial gauge or the like is installed on the mounting part 2f, the shaft of the holder can be screwed into the screw hole 2g and fitted to achieve the purpose of installation. . If other installation methods are used, screw hole 2g can be omitted. In this way, since the magnetic casing 2b with a strong structure other than the partition of the device body 2 is also Screw holes for installation can be formed, so the installation strength can also be improved.

In addition, as shown by the dotted line in Figure 3B, boss holes 2h and 2i are provided around the receiving portion 2a. The boss portions 3a and 3b provided in the cover portion 3 to be described later are fitted and assembled with the boss holes 2h and 2i respectively.

As shown in FIG. 3A, the boss hole 2h is formed continuously with the accommodating portion 2a, and in order to form the second partition 2d, it is formed along the longitudinal direction from the front side to the vicinity of the rear side of the magnetic housing 2b.

As shown in Figures 2A and 2B, the permanent magnetic rotor 5 is composed of a pair of yokes 5b and 5c that are magnetized to N pole or S pole around a plate-shaped rare earth magnetic block 5a as the center. It is rotatably supported with a slight gap from the inner surface of the accommodating part 2a, and the polarities of the N-pole side yoke 5c and the S-pole side yoke 5b are interchangeable.

As shown in Figures 4A and 4B, the permanent magnet rotor 5 is magnetically divided into left and right halves by forming an insertion hole 5d in the radial direction intersecting the longitudinal center axis of the cylindrical block made of magnetic material. Cylindrical block (a pair of yokes 5b and 5c are mechanically connected together by bearing mounting portions 5e and 5f provided at both ends in the longitudinal direction). In addition, the pair of yokes 5b and 5c are in the shape of semi-cylindrical blocks, and the chamfered portions 5b1 and 5c1 are chamfered arc surfaces, respectively formed on one radial end side (the upper end side in Figure 4A) of the semi-cylindrical block. ). The plate-shaped rare earth magnetic block 5a is inserted into the insertion hole 5d of the cylindrical block, and is magnetized into an N pole or an S pole. As for the pair of yokes 5b and 5c, the inner surface of the housing portion 2a of the device body is formed symmetrically with the opposite N-pole side yoke 5c and S-pole side yoke 5b. (please refer to Figure 2A and Figure 2B).

In addition, as shown in FIG. 4B , small-diameter cylindrical bearing mounting portions 5e and 5f are extended from both ends in the longitudinal direction of the pair of yokes 5b and 5c. As will be described later, rolling bearings 7a and 7b are respectively fitted in the outer peripheries of the bearing mounting portions 5e and 5f.

Furthermore, as shown in FIG. 4A , the bearing mounting portion 5e on one side (the front side) is provided with a fitting hole 5g for fitting with the fitting protrusion 6b of the handle portion 6 described later.

As shown in FIG. 5, rolling bearings 7a, 7b (bearings) are assembled to the outer peripheries of bearing mounting portions 5e, 5f respectively provided at the longitudinal ends of a pair of yokes 5b, 5c. As shown in FIG. 1C , the rolling bearings 7a and 7b are embedded in the receiving portion 2a of the device body 2 together with the pair of yokes 5b and 5c to support the permanent magnet rotor 5 so as to be rotatable relative to the device body.

By supporting the permanent magnet rotor 5 using the rolling bearings 7a and 7b in this manner, the rotation operability of the permanent magnet rotor 5 using the rare earth magnetic block 5a can be enhanced. As will be described later, by changing the shape of the bearing mounting portion, one of the pair of rolling bearings 7a, 7b can be omitted.

As shown in FIG. 5 , the handle portion 6 has a rod 6 a extending in the radial direction on the front side for the operator to grasp, and a fitting protrusion 6 b protruding on the rear side. The fitting boss 6b is assembled so as to fit into the fitting hole 5g of the counter bearing mounting part 5e. Furthermore, an arc-shaped protruding portion 6c is provided on the outer peripheral edge of the handle portion 6, and a fitting tube portion 3c on the back side of the cover portion 3, which will be described later, The inner wall surface is provided with incisions along the circumference. It is assembled so that it can rotate within a predetermined range along the notch recess 3d and be fitted.

That is, the handle portion 6 is assembled so as to rotate within the outer circumferential direction range (center angle θ : range of 60° to 70°) of the notch recessed portion 3d provided with the arc-shaped protrusion 6c.

A pull-out hole 3e is provided in the center of the cover 3 so that the cover 3 can be assembled from the front of the handle 6. As shown in Figures 1A and 1B, the rod 6a is arranged to be exposed outside the pull-out hole 3e. . Furthermore, the boss portions 3a and 3b provided at diagonal positions on the back surface of the cover portion 3 are fitted into the boss holes 2h and 2i provided around the receiving portion 2a of the device body 2 for assembly.

Accordingly, the boss hole 2h forming the second partition 2d also serves as a positioning hole, and the boss portion 3a of the cover 3 that closes the receiving portion 2a of the magnetic housing 2b is inserted into the positioning hole, thereby eliminating the need to fix the cover 3 to the device body. 2 screw holes to improve assembly efficiency and increase the magnetic field lines passing through the magnetic housing 2b.

In this embodiment, as shown in Figure 1A, when the central angle of the rod 6a is θ , the handle portion 6 connected to the permanent magnetic rotor 5 can rotate within the range of 60°~70°. Therefore, the operability for the operator to rotate the handle portion 6 is improved. When the operator holds the rod body 6a and rotates the handle portion 6 to the first position shown by the solid line in Figure 1A, the magnetized boundary portion (end surface) of the rare earth magnetic block 5a in Figure 2A, and the magnetic yoke The chamfered portion 5b1 of 5b is arranged to face the second partition 2d provided on the device body 2.

At this time, the magnetic field lines pass from the N-pole side yoke 5c through the opposite magnetic shell. 2b, crosses the first separator 2c, leaks out of the device body 2, and returns to the magnetic yoke 5b on the S pole side through the magnetic housing 2b, forming the first magnetic circuit M1, while the second separator 2d faces the N pole via The magnetic shell 2b of the side yoke 5c leaks out of the device body 2, and flows to the S-pole side yoke 5b through the magnetic shell 2b, respectively forming a returning second magnetic circuit M2. The magnetic element 8 arranged opposite to the adsorption part 2e forms the first magnetic circuit M1, and the base part 4 composed of the device main body 2 and the cover part 3 is adsorbed and held by the magnetic element 8.

In addition, when the operator rotates the handle 6 to the second position shown by the dotted line in Figure 1B through the rod 6a, in Figure 2B, the arc surface of the N-pole side yoke 5c is in contact with the first separator. 2c is arranged to face each other, and the arc surface of the S pole side yoke 5b is arranged to face the second separator 2d.

At this time, the first magnetic closed circuit M1 ' is formed from the N-pole side yoke 5c through the opposing magnetic housing 2b, looking inward at the chamfered portions 5c1, 5b1, and returning to the S-pole side yoke 5b. And the second magnetic closed circuit M2 ' is from the N-pole side yoke 5c through the opposing magnetic housing 2b, looking inward at the magnetization boundary (end surface) of the rare earth magnetic block 5a, and returns to the S-pole side yoke 5b.

Accordingly, as shown in the figure, when the handle portion 6 is in the second position, no magnetic force lines leak from the adsorption portion 2 e to the outside of the device body 2 , so that the base portion 4 is not adsorbed to the opposite magnetic element 8 .

As shown in FIG. 5 , the magnetic adsorption device 1 is assembled by inserting a plate-shaped rare earth magnetic block 5 a into a portion provided with chamfered portions 5 b 1 and 5 c 1 . The N pole and the S pole are excited by inserting the hole 5d between the yokes 5b and 5c to prepare the permanent magnetic rotor 5. Bearing mounting portions 5e and 5f are extended at both ends in the length direction, and the rolling bearings 8a and 8b are fitted therein. After inserting them into the receiving portion 2a of the device body 2, the assembly is completed. Moreover, the fitting protrusion 6b of the handle part 6 is fitted with the fitting hole 5g of the bearing mounting part 5e, and is assembled integrally. Finally, insert the boss parts 3a and 3b into the boss holes 2h and 2i of the device body 2, and insert the rod 6a into the extraction hole 3e of the cover part 3 and expose it to the outside of the cover part. This completes the assembly of the magnetic adsorption device 1 .

By assembling components in this way, the use of screws can be minimized, which improves the ease of assembly and prevents magnetic losses.

As described above, when the handle portion 6 is in the first position, the magnetic field lines generated from the N-pole side yoke 5c pass through the opposite device body 2, pass through the outside of the first separator 2c, pass through the device body 2, and return to the S pole. The side yoke 5b forms the first magnetic circuit M1; the base 4 can be adsorbed to the magnetic element 8 facing the adsorption part 2e. In addition, the magnetic force lines pass from the N-pole side yoke 5c through the opposite magnetic housing 2b, cross the second partition 2d, leak to the outside of the device body 2, and form a second path back to the S-pole side yoke 5b through the magnetic housing 2b. The magnetic circuit M2 prevents magnetic leakage from the mounting part 2f facing the adsorbing part 2e, and does not require special magnetic force countermeasures when installing measuring equipment. It is easy to use and has expanded versatility.

The permanent magnet rotor 5 is provided with a pair of rare earth magnetic blocks 5a on both sides.

When the rotation operability of a pair of yokes 5b and 5c, which has greater magnetic attraction than a ferromagnetic magnet, tends to deteriorate, rolling bearings 7a and 7b between the two can be used to improve the rotation operability. In addition, since the center angle θ of the rod body 6a is in the range of 60° to 70°, it is easy to rotate and has good operability.

[Second Embodiment]

The schematic structure of the magnetic adsorption device according to the second embodiment will be described below with reference to FIGS. 6A to 9 . The same components as those in the first embodiment are denoted by the same reference numerals, and the following description focuses on different configurations.

As shown in Figures 6A to 6C, the magnetic adsorption device 1 has a device body 2. The device body 2 has a receiving portion 2a with a circular cross-section in the magnetic housing 2b, and a receiving portion 2a for closing the device body. The open lid part 3 and the base part 4 have a pair of magnetic yokes 5b and 5c that are magnetized to N pole or S pole with the rare earth magnetic block 5a as the center, facing the inner surface of the housing part 2a of the device body 2 The permanent magnet rotor 5 is rotatably supported and connected to the shaft portion on one end side of the permanent magnet rotor 5 in the longitudinal direction. The rod body 6a is also provided with a handle portion 6 extending from the outer surface of the cover portion 3. The structure is the same as the first embodiment. The difference between this embodiment and the first embodiment is that the rolling bearing 7b among the pair of bearings is omitted, and the structure of the permanent magnetic rotor 5 and the device body 2 that supports it to be rotatable is different.

Furthermore, as shown in Figure 6C, the permanent magnetic rotor 5 is magnetized to N pole or S pole by inserting the plate-shaped rare earth magnetic block 5a into the insertion hole 5d of the cylindrical block. And the arc shape has an inverted The chamfered portions 5b1 and 5c1 of the corners are formed into opposing and symmetrical yokes 5b and 5c, and their structures are the same as those of the first embodiment.

As shown in Figures 8A and 8B, a small-diameter cylindrical bearing mounting portion 5e is extended from one end in the longitudinal direction of the cylindrical block constituting the yokes 5b and 5c. As will be described later, a rolling bearing 7a is fitted to the outer periphery of this bearing mounting portion 5e. In addition, a conical shaft portion 5h having a tapered surface protrudes from the center portion of the other longitudinal end of the cylindrical block constituting the yokes 5b and 5c. Furthermore, the front end of the conical shaft portion 5h does not need to be sharp, and the chamfer may have a truncated cone shape.

As shown in FIG. 7A, the device body 2 uses a magnetic case 2b made of, for example, iron. The magnetic housing 2b is divided into a plurality of magnetic pole elements by the first separator 2c and the second separator 2d to form a plurality of magnetic circuits. The device body 2 is formed with an adsorption portion 2e that spans the first partition 2c and attracts an opposing magnetic body (not shown). The first partition body 2 c and the second partition body 2 d are formed by adjacent thin-walled portions of the magnetic case 2 b constituting the device body 2 and whose side surfaces are thinned. The first partition body 2c and the second partition body 2d are arranged at a predetermined angle less than 180° (for example, the center angle is in the range of 145° to 150°), which is also the same as the first embodiment.

As shown by the dotted lines in Figure 7B, boss holes 2h and 2i are provided around the receiving portion 2a. The boss portions 3a and 3b provided on the cover portion 3 are embedded and assembled respectively. The bearing recess 2j is provided in the center portion of the rear inner wall of the housing accommodating portion 2a. The bearing recess 2 is formed as a cone to accommodate the permanent magnet rotor 5 The inverted tapered hole of the shaped shaft part 5h. As shown in Figure 6C, by fitting the conical shaft portion 5h into the bearing recess 2j on the inside in the longitudinal direction, the permanent magnet rotor 5 is certering and accommodated in the receiving portion 2a of the device body 2, so that the rolling bearing 7a is inserted into the long The front side in the side direction is rotatably supported.

As shown in FIG. 9, in order to assemble the magnetic adsorption device 1, the plate-shaped rare earth magnetic block 5a is inserted into the insertion hole 5d between the yokes 5b and 5c provided with the chamfered portions 5b1 and 5c1, so that N The pole and S pole are excited to prepare a permanent magnetic rotor 5 that is magnetized into N pole or S pole. The rolling bearing 7a is fitted into the bearing mounting portion 5e extending from one longitudinal end of the permanent magnetic rotor 5; it is inserted into the receiving portion 2a of the device body 2 from the conical shaft portion 5h side, and is fitted and assembled into the bearing groove 2j. In addition, the fitting convex portion 6b of the handle portion 6 is fitted into the fitting hole 5g of the bearing mounting portion 5e to be integrated. Finally, insert the rod body 6a into the extraction hole 3e of the cover 3 and expose it to the outer surface of the cover, and insert the boss portions 3a and 3b into the boss holes 2h and 2i of the device body 2, that is, the assembly is completed.

Here, a modified example of the device body used in the first and second embodiments will be described with reference to FIG. 10 . As shown in the aforementioned Figure 2A, when the handle portion 6 is in the first position, magnetic lines of force are formed from the N-pole side yoke 5c through the opposite magnetic housing 2b, across the first separator 2c, and from the adsorption portion 2e to the device. The leakage from the main body 2 passes through the magnetic housing 2b and returns to the first magnetic circuit M1. The magnetic force lines pass from the N-pole side yoke 5c through the opposite magnetic housing 2b and cross the second separator 2d to the outside of the device body 2. The leakage passes through the magnetic housing 2b and returns to the S pole side magnetic yoke 5b, forming is the second magnetic circuit M2. At this time, when the magnetic workpiece W is placed on the side 2k adjacent to the adsorption portion 2e of the magnetic housing 2b, it can be known that the magnetic workpiece W will be acted upon by the formed second magnetic circuit M2 and be attracted to the side 2k. In order to avoid this situation, a thin-walled curved surface 2m continuous with the second partition 2d can be formed on the side 2k of the magnetic housing 2b.

Accordingly, even if the magnetic workpiece W is arranged adjacent to the side surface 2k, the escape space having a curved surface can prevent the magnetic workpiece W from being unintentionally attracted outside the adsorption portion 2e.

[Third Embodiment]

The schematic structure of the magnetic adsorption device according to the third embodiment will be described below with reference to Figures 11A and 11B. The same components as in the first embodiment are denoted by the same reference numerals, and the following description focuses on the different overall composition.

Same as the first embodiment, the first partition 2 c and the second partition 2 d that magnetically separate the device body 2 are arranged at a predetermined angle less than the central angle of 180° (for example, the central angle is in the range of 145° to 150° ) are provided, but non-magnetic materials (aluminum materials, etc.) can be respectively inserted between the thin-walled portions of adjacent side surfaces of the magnetic housing 2b. The non-magnetic material can be integrated into the magnetic housing 2b by welding or gluing.

Accordingly, by inserting a non-magnetic material (for example, aluminum material) between adjacent side surfaces of the magnetic case 2b, the magnetic case 2b can be divided into a plurality of magnetic components in the same manner as the thin-walled portion. In addition, since the partition in the device body 2 Screw holes for installation can also be formed on the magnetic housing 2b with a strong structure, so the installation strength is also improved.

Furthermore, the structure of the permanent magnet rotor 5 is the same as that of the first embodiment, and the rotation angle of the handle portion 6 connected to the permanent magnet rotor 5 can also be set to be rotatable within the range of the central angle θ from 60° to 70°.

When the operator rotates the handle portion 6 to the first position shown by the solid line in Figure 1A, the magnetized boundary portion (end surface) of the rare earth magnetic block 5a in Figure 11A is disposed to face the first separator 2c ; The chamfered portion 5b1 of the S-pole side yoke 5b is arranged opposite to the second separator 2d provided on the device body 2.

At this time, the magnetic force lines are respectively formed to pass from the N-pole side magnetic yoke 5c through the oppositely arranged magnetic housing 2b, cross the first separator 2c, leak out of the device body 2 from the adsorption part 2e, pass through the magnetic housing 2b, and return to the S-pole side magnetic field. The first magnetic circuit M1 of the yoke 5b and the magnetic force lines pass from the N-pole side yoke 5c through the opposite magnetic housing 2b, cross the second separator 2d, leak out of the device body 2, pass through the magnetic housing 2b, and return to S The second magnetic circuit M2 of the pole side yoke 5b. When a magnetic body (not shown) is provided to face the adsorption portion 2e, the magnetic housing 2b (base portion 4) forming the first magnetic circuit M1 is attracted and held by the magnetic body.

Moreover, when the operator rotates the handle portion 6 to the second position shown by the dotted line in Figure 1B through the rod 6a, the arc surface of the N-pole side yoke 5c in Figure 1B faces the first separator 2c. To set, S pole side magnet 5b The arc surface and the second partition 2d are arranged opposite to each other.

At this time, the first magnetic closed circuit M1 ' is formed from the N-pole side yoke 5c looking inward through the opposing magnetic case 2b at the chamfered portions 5c1, 5b1 and returning to the S-pole side yoke 5b and from The N-pole yoke 5c looks inward at the magnetization boundary (end surface) of the rare earth magnetic block 5a, and returns to the second magnetic closed circuit M2 ' of the S-pole side yoke 5b. As a result, when the handle portion 6 is in the second position, no magnetic force lines leak from the adsorption portion 2e to the outside of the device body 2, so that the magnetic body (not shown) facing the magnetic housing 2b (base 4) is not attracted.

[Fourth Embodiment]

The schematic structure of the magnetic adsorption device according to the fourth embodiment will be described below with reference to Figures 12A and 14E. The same components as in the first embodiment are denoted by the same reference numerals, and the following description focuses on the different overall configuration. The structure of the permanent magnet rotor 5 is the same as that of the first embodiment. As shown in Figure 12A, the magnetic cylinder 2n is used as the magnetic block. One longitudinal end side of the magnetic cylinder 2n is closed by the cover part 3 through the handle part 6. The adsorption part 2e is formed in the longitudinal direction on the magnetic cylinder. On the other longitudinal end side. A screw hole 3f (screw hole) is drilled in the center of the cover 3, and a bracket for holding a dial indicator, etc. is attached. That is, the cover portion 3 becomes a mounting surface for mounting a holder (not shown) by screwing it into the screw hole 3f.

As shown in FIG. 13B , the magnetic cylinder 2n is provided with a receiving portion 2a composed of a cylindrical hole extending in the longitudinal direction at its central portion. The permanent magnet rotor 5 is rotatably accommodated in the accommodation portion 2a. On the long side of the magnetic cylinder 2n Three screw holes 2p are provided at one end, and the cover 3 described later is fixed and assembled through the screw holes.

In addition, the magnetic cylinder 2n is divided into a plurality of magnetic components by partitions (first partition 2c, second partition 2d) provided at a plurality of locations in the peripheral direction. The first partition body 2 c and the second partition body 2 d are formed from a thin-walled portion of a peripheral wall of the magnetic cylinder 2 n constituting the device body 2 . The first partition body 2c and the second partition body 2d are provided at a predetermined angle less than 180° (for example, the center angle is 120°). The first partition body 2c and the second partition body 2d are formed from one end side in the longitudinal direction of the magnetic cylinder 2n to the vicinity of the other pile in the longitudinal direction. The first separator 2c and the second separator 2d form a gap portion 2q such as a circular hole or a recess by being adjacent to the housing portion 2a of the magnetic cylinder 2n. When forming the housing portion 2a of the device body 2 by cutting or molding, the first partition 2c and the second partition 2d can be integrally processed, thereby reducing the number of parts and simplifying the structure. Moreover, the gap 2q provided along the longitudinal direction of the magnetic cylinder 2n is not formed so that it may penetrate the annular end surface which becomes the adsorption|suction part 2e. Incidentally, instead of the thin-walled portion, a nonmagnetic material (aluminum material, etc.) may be inserted into the peripheral wall of the magnetic cylinder 2n. The non-magnetic material can be integrally attached and combined to the magnetic cylinder 2n by welding or gluing.

As shown in FIG. 13B , a disc-shaped rotating plate can be used as the handle portion 6 . In the center of the handle portion 6, a fitting boss portion 6b is protrudingly provided to fit into the fitting hole 5g of the bearing mounting portion 5e of the yokes 5b and 5c. The opposite surface of the fitting protrusion 6b is formed with a fitting for fitting the center axis 3g of the cover 3 described later. Recess 6e. In addition, a plurality (for example, three places) of elongated holes 6d arranged in an arc shape are formed on the outer peripheral side of the handle portion 6 . When the cover part 3 described later is screwed into the screw hole 2p of the magnetic cylinder 2n in this long hole 6d, the boss part 3h is inserted into the long hole 6d and assembled and positioned (see Fig. 12B). As shown in FIG. 13A, the handle part 6 is sandwiched between the device body 2 and the cover part 3 so that the outer peripheral surface 6f is exposed, and is assembled. Therefore, the rotation amount of the handle part 6 is within the range in which the boss part 3h is inserted into the long hole 6d, and both ends of the long hole 6d are fixed. In addition, the outer peripheral surface 6f (operating part) of the handle part 6 is knurled so that the operator can grasp the outer peripheral surface 6f and rotate it in a predetermined direction without slipping. By turning the handle part 6, the adsorption and release of the adsorption part 2e of the magnetic cylinder 2n mentioned later can be switched.

As shown in Figure 12A, the cover 3 is provided on the end surface of the magnetic cylinder 2n opposite to the adsorption part 2e, overlaps the handle part 6 (turntable), and is connected to the end of the magnetic cylinder 2n. As shown in FIG. 13C , the cover part 3 is formed in a disk shape, and a central axis 3g protruding from the center thereof is provided as a rotation axis of the handle part 6 . A screw hole 3f (screw hole) is provided on the opposite surface of the central shaft 3g. Furthermore, protruding portions 3h are provided at a plurality of locations (for example, three locations) on the outer peripheral side of the cover portion 3 . The boss 3h is provided with a sleeve hole 3i, and a screw 9 described later is inserted into the sleeve hole 3i. Accordingly, since the cover 3 also serves as an assembly surface for the mounted components, the magnetic adsorption device 1 can be installed without occupying the installation area, and screw holes can be provided for mounting on the cover 3 with the central axis 3g having a relatively high strength. noodle.

In order to assemble the magnetic adsorption device 1 as shown in FIG. 12B, the plate-shaped rare earth magnetic block 5a is inserted into the magnetic plate having chamfered portions 5b1 and 5c1. Into the insertion hole 5d between the yokes 5b and 5c, the permanent magnetic rotor 5 is prepared to form the N pole or the S pole. The rolling bearings 7a and 7b are respectively mounted to the bearing mounting portions 5e and 5f extending from both longitudinal ends of the permanent magnet rotor 5, and are inserted and assembled into the receiving portion 2a of the magnetic cylinder 5n. In addition, the fitting hole 5g of the bearing mounting part 5e and the fitting protrusion 6b of the handle part 6 (please refer to FIG. 13B) are fitted so as to overlap with the handle part 6 at the end of the magnetic cylinder 2n. Furthermore, the cover part 3 is fitted into the handle part 6 in a state where the central axis 3g is fitted into the fitting recessed part 6e. The three boss parts 3h are inserted into the corresponding elongated holes 6d and overlap each other. The set holes of each boss part 3h are 3i overlaps and abuts the position corresponding to the screw hole 2p of the magnetic cylinder 2n. Thereafter, by inserting the screw 9 into the sleeve hole 3i and screwing it into the screw hole 2p, as shown in Figure 12A, the handle part 6 and the cover part 3 are assembled with the end of the magnetic cylinder 2n overlap. On the other hand, the outer peripheral surface 6f (operating part) of the handle part 6 protrudes outward from the outer peripheral surface of the cover part 3 after assembly. When the handle portion 6 rotates, the permanent magnet rotor 5 also rotates, and the magnetic circuit formed in the device body 2 is switched.

As shown in Figures 14A to 14C, when the handle portion 6 is in the first position (the boss portion 3h is fitted with one end of the corresponding long hole 6d), for example, as shown in Figure 14C, the rare earth magnetic block The body 5a is located at the magnetization boundary portion (end surface) as shown in FIG. 14C and is disposed facing the first separator 2c. The chamfered portion 5b1 of the yoke 5b is disposed facing the second separator 2d provided in the device body 2. At this time, as shown in Figures 14A and 14B, the magnetic lines of force generated from the N-pole side magnetic yoke 5b leak from the opposite magnetic cylinder 2n to the outside of the device body 2, and are attracted to in the first and second partitions 2c, 2d, respectively, and the first and second magnetic bodies 2. Circuits M1 and M2 are formed that return to the S-pole yoke 5c through the other magnetic cylinder 2n that is magnetically separated. At this time, the device body 2 is attracted and fixed by the magnetic member 8 due to the opposing magnetic force lines of the magnetic member 8 that faces the attraction portion 2e of the magnetic cylinder 2n. The magnetic lines of force crossing the first and second separators 2c and 2d also leak out from the outer peripheral surface of the magnetic cylinder 2n, but do not contribute to the adsorption effect on the magnetic component 8.

As shown in Figures 14D and 14E, when the handle portion 6 is in the second position (the boss portion 3h is fitted to the other end of the corresponding elongated hole 6d), for example, the S pole of the rare earth magnetic block 5a is The first separator 2c is arranged to face each other, and the N pole and the second separator 2d are arranged to face each other. At this time, the magnetic lines of force generated from the N-pole side magnetic yoke 5b return to the S-pole side magnetic yoke through the oppositely arranged magnetic cylinder 2n, forming the first and second magnetic closed loops M1 ' and M2 ' respectively (please refer to Chapter 2). 14E), at this time, the magnetic field lines will not leak to the outside from the adsorption portion 2e of the magnetic cylinder 2n, and the adsorption between the adsorption portion 2e and the oppositely arranged magnetic member 8 is released. The polarities (N pole/S pole) of the rare earth magnetic block 5a are interchangeable.

The device body 2 used in the above-mentioned embodiments 1 to 3 is explained with the magnetic case 2b. However, the shape of the six sides is not necessarily a flat surface, and the adsorption portion 2e is formed into an uneven surface, an inclined surface, or an inclined surface in addition to the inclined surface. , curved surfaces, etc. can also be formed on other sides. Furthermore, the magnetic cylinder 2n used in the fourth embodiment does not necessarily have to be a perfect circle/annular shape, and may be formed in various shapes such as an ellipse, an oval, a rectangle including a curved surface, and the like.

In addition, the rare earth magnetic block 5a is formed in a plate shape and is inserted into the insertion hole 5d provided in the radial direction. However, the rare earth magnetic block 5a is not limited to a plate shape, and may be formed in a cylindrical shape, for example. The shape and insertion hole provided relative to the axial direction of the yoke can be inserted.

Furthermore, the above-mentioned magnetic adsorption device 1 is assembled by fitting the constituent parts as much as possible, but it may also be assembled and installed by press-fitting, adhesion, or the like.

Furthermore, the operating angle (rotation angle) of the handle 6 takes the central angle of 60° to 70° as an example, but is not limited thereto and can be adjusted according to the arrangement angle of the first partition 2c and the second partition 2d, such as the center angle. The angle can be as small as 45°~55° or as large as 80°~90°.

2: Magnetic adsorption device body

2a: Containment Department

2b: Magnetic shell

2c: First separator

2d: second divider

2e: Adsorption part

2f: Installation Department

2h:Boss hole

5:Permanent magnetic rotor

5a: Rare earth magnetic block

5b, 5c: yoke

5b1, 5c1: chamfer part

8: Opposing magnetic components

M1: First magnetic circuit

M2: Second magnetic circuit

M1 ' : first closed magnetic circuit

M2 ' : The second closed magnetic circuit

Claims (14)

A magnetic adsorption device is provided with: a receiving portion with a circular cross-section inside the magnetic block, in which a plurality of separators are arranged to form a plurality of magnetic circuits in the magnetic block, spanning across the opposite side of each separator , a device body that forms an adsorption portion that is attracted to a magnetic component. The receiving portion of the device body can be opened with a cover and has a base. A pair of magnetized yokes with a rare earth magnetic block as the center contained in the receiving portion of the device body is a pair of permanent magnetic rotors that are rotatably supported and opposed to each other in the receiving portion of the magnetic block. ; A handle portion connected to the shaft portion on one longitudinal end side of the permanent magnetic rotor and integrated with the operating portion exposed from the cover portion; By turning the handle part, the permanent magnetic rotor is rotated at a predetermined angle less than 90° relative to the central angle, thereby forming a plurality of magnetic loops for leaking magnetic lines of force from the device body to the outside of the plurality of separators; A plurality of magnetic circuits separated by a plurality of separators are respectively formed at a first position where the base is adsorbed to the magnetic component opposite to the adsorption part, and between the device body and the permanent magnetic rotor. The base portion and the adsorption portion respectively formed by a plurality of magnetic closed loops separated by the plurality of separators hope to switch to a second position in which the adsorption of the opposing magnetic components is released. For example, in the magnetic adsorption device of claim 1, wherein each of the pair of magnetic yokes has a chamfered portion, the chamfered portion is formed by an arc surface facing the inner surface of the receiving portion of the magnetic housing. It is formed by chamfering. When the handle portion is in the first position, the magnetized boundary portion of the rare earth magnetic block is disposed opposite to the first separator provided on the adsorption portion, and any one of the chamfered portions is in contact with the first separator. The second separators are arranged oppositely to form a plurality of magnetic loops to leak magnetic lines of force to the outside of the device body. For example, the magnetic adsorption device of item 2 of the patent application, wherein when the handle is in the second position, the arc surfaces of the pair of magnetic yokes are respectively in contact with the first separator or the second separator provided on the magnetic shell. Relatively, multiple magnetic closed loops are formed between the magnetic shell and the permanent magnetic rotor respectively so that the magnetic lines of force do not leak. For example, the magnetic adsorption device of Item 2 or 3 of the patent application, wherein the adjacent side surfaces of the magnetic casing are formed with thin-walled portions with a thin plate thickness, and the magnetic casing is used as a first separator for magnetic separation. and the second separator is arranged at a predetermined angle with a central angle less than 180°. For example, in the magnetic adsorption device of claim 4, the gap forming the thin-walled portion also serves as a positioning hole for inserting the boss portion of the cover that closes the opening of the receiving portion of the device body. Such as the magnetic adsorption device of Item 4 or Item 5 of the patent application, wherein the side surfaces of the magnetic housing and the second separator forming the The thin wall portion forms a continuous curved surface. For example, the magnetic adsorption device of item 2 or 3 of the patent application, wherein the first separator and the second separator that magnetically separate the magnetic shell are arranged at a predetermined angle with a central angle less than 180°, and are arranged with non-magnetic materials on adjacent sides of the magnetic housing. For example, the magnetic adsorption device according to any one of items 1 to 7 of the patent application, wherein the handle portion connected to the permanent magnetic rotor is configured to be rotatable within a central angle range of 60° to 70°. For example, the magnetic adsorption device according to any one of items 1 to 8 of the patent application, wherein the base has an adsorption portion formed on one surface of the device body to adsorb magnetic components, and the adsorption portion is opposite to the surface. Serves as the mounting surface for the component to be mounted. For example, in the magnetic adsorption device of claim 1 of the patent application, each of the pair of magnetic yokes has a chamfered portion formed by chamfering, and the chamfered portion is aligned with the magnetic cylinder receiving portion. The opposite arcuate surfaces on the inner surfaces are formed by chamfering. When the handle portion is in the first position, the magnetized boundary portion of the rare earth magnetic block is disposed opposite to the first separator provided on the adsorption portion. And any one of the chamfered parts is arranged opposite to the second separator to form a plurality of magnetic loops to leak magnetic lines of force to the outside of the device body. For example, in the magnetic adsorption device of item 10 of the patent application, when the handle is in the second position, the arc surfaces of the pair of magnetic yokes are respectively in contact with the device. The first separator or the second separator placed in the magnetic casing is opposite to each other, so that a plurality of magnetic closed loops are respectively formed between the magnetic casing and the permanent magnetic rotor so that the magnetic lines of force do not leak. For example, the magnetic adsorption device of Item 10 or 11 of the patent application, wherein the shaft portion on one end side of the length direction of the permanent magnetic rotor is connected to a rotating plate and is rotatably arranged on the magnetic cylinder. At one end, the overlapping cover portion of the rotating plate is connected to the end of the magnetic cylinder. For example, in the magnetic adsorption device of claim 12, the cover part is disposed on the opposite surface to the adsorption part on the other end side of the magnetic cylinder as a mounting surface for the mounted component. For example, in the magnetic adsorption device of items 1 to 13 of the patent application, the permanent magnetic rotor is rotatably supported by a bearing provided on at least one end side of the receiving portion of the device body.

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