JP3045926U - Holding tool - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To easily and firmly magnetically adsorb and fix an object to be adsorbed to a predetermined position, and to easily remove the object by releasing the adsorbing force. Provide a holder that can. SOLUTION: A holder 10 includes a planar magnetic force generating yoke portion 22 in which magnet bodies 28a to 28e and magnetic bodies 32a to 32f are arranged alternately and adjacently. A sliding plate 34 is slidably disposed on the magnetic force generating yoke 22. The sliding plate 34 has first and second sliding yoke portions 40 and 48. The first sliding yoke part 40 includes the magnetic bodies 44a to 44
f and the non-magnetic members 46a to 46e are alternately formed adjacent to each other, and the second sliding yoke portion 48 is formed of a planar magnetic member. A sliding plate 34 is provided above the magnetic force generating yoke 22.
The fixing plate 54 is provided with the interposition therebetween. The fixed yoke portion 60 is formed on the fixed plate 54 at a position corresponding to the magnetic force generating yoke portion 22. By sliding the sliding plate 34, the first sliding yoke portion 40 and the second sliding yoke portion 48 are selectively arranged on the magnetic force generating yoke portion 22 to face each other.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a holder, and more particularly, to a holder capable of detachably holding an article such as a work made of iron, steel or other magnetic material at a predetermined position by magnetically attracting the article.

[0002]

[Prior art]

 FIG. 8 is an illustrative sectional view showing an example of a conventional transport jig as a background of the present invention. The transport jig 1 includes, for example, a hat-shaped holder 3. The holder 3 has a flat circular recess 5 at the center upper part. In the center of the holder 3, a pin 7 is supported. The pin 7 is supported by the holder 3 so that its axial tip 7a protrudes from the upper end surface of the holder 3. Further, for example, an annular rubber magnet 9 is mounted in the concave portion 5 of the holder 3. The rubber magnet 9 has magnetism on its surface. The tip 9 a of the pin 7 is inserted through the hole 9 a of the rubber magnet 9, and is magnetically attracted to the recess 5.

A work W (workpiece) such as a bottom member of a speaker is magnetically attracted and held on an upper surface of the holder 3, and a processing operation or the like is appropriately performed. Then, when the processing operation or the like is completed, the work W is removed from the attraction surface of the rubber magnet 9.

[0004]

[Problems to be solved by the invention]

 However, in the conventional transfer jig shown in FIG. 8, if the magnetic force of the rubber magnet 9 is too large, residual magnetism is generated on the attraction surface of the rubber magnet 9, and when the work W is lifted and removed from the attraction surface, the work W However, there is a danger that it will come off with the holder 3 via the pin 7. On the other hand, if the magnetic force of the rubber magnet 9 is too small, the attraction force for magnetically attracting the work W is reduced, and the work W is displaced from the attracting surface when performing a working operation on the work W. Work efficiency to W decreases.

Therefore, a main object of the present invention is to easily and firmly magnetically adsorb and fix an object to be adsorbed at a predetermined position, and to easily release the adsorbing force to easily fix the object to be adsorbed. The object of the present invention is to provide a holder which can be detached.

[0006]

[Means for Solving the Problems]

 This invention is based on a planar magnetic force generating yoke portion in which a magnetic body and a magnet body are alternately formed adjacent to each other, and a magnetic force generating yoke portion disposed on one main surface side of the magnetic force generating yoke portion. A first sliding yoke portion and a second sliding member for closing the magnetizing force of the magnet body formed alternately and adjacently in the same direction in the same arrangement as the magnetic body and the magnet body of the magnetic force generating yoke portion. A sliding portion having a yoke portion, and a first sliding yoke portion or a second sliding yoke portion being selectively displaced in such a manner that the sliding portion is slidably disposed on one main surface of the magnetic force generating yoke portion. And a sliding means for controlling the strength of the magnetizing force exerted on the other main surface side of the sliding portion facing the magnetic force generating yoke portion, opposite to the one main surface side of the sliding portion facing the magnetic force generating yoke portion. A holder that detachably and magnetically adsorbs the object to be attached to the other main surface side of the sliding portion.

The present invention also provides a planar fixed yoke portion in which magnetic materials and non-magnetic materials are alternately arranged adjacent to each other, and a fixed yoke portion provided on one principal surface side of the fixed yoke portion. The magnet body is formed of a planar magnetic force generating yoke portion formed alternately and adjacently to the same direction in the same arrangement as the magnetic material and the nonmagnetic material of the fixed yoke portion, and the fixed yoke portion and the magnetic force generating yoke portion. A first planar surface is formed so that the magnetic body and the non-magnetic body are alternately formed adjacent to each other in the same arrangement and in the same direction as the magnetic body and the magnet body of the magnetic force generating yoke portion. A sliding portion formed on the same surface as the sliding yoke portion and the first sliding yoke portion and having a second sliding yoke portion for closing a magnetizing force of the magnet body; By displacing the first sliding yoke and the second sliding yoke, the magnetic force is selectively generated. Sliding means for controlling the strength of the magnetizing force exerted by the magnetic pole of the magnet body on the other main surface side of the fixed yoke portion, the sliding means being opposed to one main surface of the fixed yoke portion; This is a holder that detachably attaches an object to be attracted to the side magnetically.

Preferably, the second sliding yoke portion is formed of a planar magnetic body. In this case, since the second sliding yoke portion can be formed, for example, on a flat plate, it is easy to manufacture. The second sliding yoke portion is formed by alternately forming a magnetic material and a non-magnetic material in a plane adjacent to each other, and furthermore, the second sliding yoke portion is formed on one main surface of the magnetic force generating yoke portion. In the case where the magnetic members of the second sliding yoke are arranged in the opposite direction, the magnetic members of the second sliding yoke may be arranged in a grid pattern with respect to the magnetic members of the magnetic force generating yoke.

It is effective to form a gap between the magnetic force generating yoke and the second sliding yoke. This gap may be formed by providing a step on either one of the main surfaces facing the magnetic force generating yoke and the second sliding yoke.

The first sliding yoke and the second sliding yoke are arranged such that the center position of the first sliding yoke and the second sliding yoke overlaps the center of the magnetic force generating yoke. It is preferable to further include a positioning means for positioning the magnetic head on one main surface of the magnetic force generating yoke.

In addition, the present invention provides a base, a planar magnetic force generating yoke portion exposed on one main surface of the base, and having a magnetic body and a magnet body alternately formed adjacent to each other; A magnetic member and a non-magnetic member are formed slidably on one main surface side of the portion, and are formed adjacent to each other alternately in the same direction and in the same direction as the magnetic member and the magnet member of the magnetic force generating yoke portion. A sliding plate having a planar second sliding yoke portion formed at a distance from the first sliding yoke portion and the first sliding yoke portion and closing the magnetizing force of the magnet body; A step portion formed on at least one of the opposing main surfaces of the sliding yoke portion and the magnetic force generating yoke portion of the base; and a magnetic material and a non-magnetic material fixed to the base with a sliding plate interposed therebetween. Are arranged in the same arrangement as the magnetic body and the magnet body of the magnetic force generating yoke part, and face alternately adjacently in the same direction. A fixed plate provided with a fixed yoke portion, and a magnetic force generating yoke formed on a base and having a center position of the first sliding yoke portion or the second sliding yoke portion when the sliding plate is slid. Positioning means for positioning the first sliding yoke portion or the second sliding yoke portion on one main surface of the magnetic force generating yoke portion so as to overlap the center position of the sliding portion. By slidably displacing, the first sliding yoke portion or the second sliding yoke portion is selectively arranged to face one main surface side of the magnetic force generating yoke portion, and the magnetic pole of the magnet body is fixed to the fixed plate. The holder is configured to control the strength of the magnetizing force exerted on the exposed surface side of the fixed yoke portion, and to detachably attach the object to be attracted to the exposed surface side of the fixed yoke portion.

It is effective that the magnetic poles of a plurality of magnet bodies adjacent to each other with the plurality of magnetic bodies of the magnetic force generating yoke portion interposed therebetween have the same polarity. Further, a non-magnetic material may be laminated on the magnet body included in each of the above-described inventions.

[0013]

[Action]

 The first sliding yoke and the second sliding yoke of the sliding portion are selectively displaced by the sliding means so as to selectively oppose one main surface of the magnetic force generating yoke. Deployed.

When the first sliding yoke portion of the sliding portion is opposed to the one main surface of the magnetic force generating yoke portion by the sliding means, the magnetic pole (N pole) of the magnet body of the magnetic force generating yoke portion From the magnetic body of the magnetic force generating yoke, flows to the magnetic body of the first sliding yoke and the magnetic body of the fixed yoke, and flows to the other main surface side of the fixed yoke. Further, the magnetic material of the fixed yoke portion enters the magnetic pole (S-pole) of the magnet body through the magnetic material of the first sliding yoke portion and the magnetic material of the magnetic force generating yoke portion. Therefore, a magnetic force from the magnet body acts on the other main surface side of the fixed yoke portion, and a magnetic field is generated. Therefore, when an object to be attracted, such as a work, is placed on the other main surface side of the fixed yoke portion, the magnetic flux emitted from the magnetic pole (N pole) of the magnet passes through the object and the magnetic pole (S ), The object to be attracted is magnetically attracted to the other main surface side of the fixed yoke portion.

Further, when the second sliding yoke portion of the sliding portion is opposed to the one main surface of the magnetic force generating yoke portion by the sliding means, the magnetic flux emitted from the magnetic pole (N pole) of the magnet body. Flows from the magnetic material of the magnetic force generating yoke to the magnetic material of the magnetic force generating yoke through the magnetic material of the second sliding yoke, and enters the magnetic pole (S pole) of the magnet. In this case, since the flow of the magnetic flux is closed in the magnetic force generating yoke portion and the second sliding yoke portion, no magnetizing force acts on the other main surface side of the fixed yoke portion.

The positioning means is arranged so that the center position of the first sliding yoke portion or the second sliding yoke portion overlaps the center position of the magnetic force generating yoke portion. The moving yoke is positioned on one main surface of the magnetic force generating yoke. Therefore, the first and second sliding yoke portions of the sliding portion can be simply and accurately opposed to one main surface of the magnetic force generating yoke portion.

When a gap is formed between the magnetic force generating yoke and the second sliding yoke, an air layer is formed between the magnetic force generating yoke and the second sliding yoke. In this case, the magnetic flux from the magnetic pole of the magnet body of the magnetic force generating yoke portion flows through the air layer to the magnetic material of the second sliding yoke portion, and again passes through the air layer to generate the magnetic force. Although it flows to the magnetic poles of the magnet body of the yoke, the magnetic flux does not easily pass through the air, so the magnetic attraction of the magnetic force generating yoke acting on the second sliding yoke of the sliding part is reduced. . Therefore, sliding of the sliding portion when the second sliding yoke portion is opposed to one main surface of the magnetic force generating yoke portion is facilitated.

[0018]

[Effect of the invention]

 With the holder according to the present invention, the object to be adsorbed can be easily magnetically firmly attracted to a predetermined position and fixed, and the object to be attracted can be easily removed by releasing the attraction force. Can be. In particular, in the holder according to the present invention, when the sliding portion is slid and displaced by the sliding means and the second sliding yoke portion is disposed opposite to the magnetic force generating yoke portion, the magnetic force generating yoke portion and the second sliding yoke portion can be displaced. Since the magnetic circuit forms a closed loop with the sliding yoke, the magnetic flux from the magnetic force generating yoke is almost completely blocked on the holding surface that magnetically attracts and holds the object to be attracted. Is done. That is, in the holder according to the present invention, the residual magnetic flux density remaining on the object-holding surface can be extremely reduced as compared with the conventional product. Removal is extremely easy.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the drawings.

[0020]

[Embodiment of the invention]

 FIG. 1 is a perspective view showing an example of an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the holder shown in FIG. The holder 10 includes, for example, a rectangular base 12. On one main surface (upper surface) of the base 12, a slide path 14 through which a slide plate 34 described later slides is formed from one end to the other end in the length direction. The sliding path 14 includes a sliding path 14a for slidingly displacing the first sliding yoke portion 40 and the second sliding yoke portion 48 of the sliding plate 34, and an operating portion 38a of the sliding plate 34. , 38b are formed by sliding passages 14b, 14c for sliding.

The sliding path 14 is formed by providing guide frames 16 and 18 each having a substantially U-shape in plan view on one end and the other end in the width direction of the upper surface of the base 12. The two guide frames 16 and 18 have the same shape and the same size. Since the two guide frames 16 and 18 have the same structure, only one guide frame 16 will be described. The guide frame 16 includes an elongated rectangular plate-like long side portion 16a. At one end and the other end in the length direction of the long side 16a, rectangular plate-shaped short sides 16b and 16c extending at right angles from the end are formed. The short sides 16b and 16c are provided to extend in the same direction. The length of the long side 16a in the length direction is formed to be the same as the length of the base 12 in the length direction.

The two guide frames 16 and 18 are line-symmetric with respect to the axis of symmetry XX when the center in the width direction of the base 12 and the portion extending in the length direction are defined as the axis of symmetry XX. Be placed. The edge of the long side 16a of one guide frame 16 and one edge extending in the length direction of the base 12 overlap, and the edge of the long side 18a of the other guide frame 18 and the edge of the base 12 Guide frames 16 and 18 are arranged on one main surface of base 12 so that the other edges extending in the length direction overlap with each other. The base 12 and the two guide frames 16 and 18 are integrally formed of a synthetic resin material such as polyacetal (abbreviation: POM) or a non-ferrous metal material such as an aluminum alloy.

The two guide frames 16 and 18 are provided with, for example, three screw holes 20a, 20b and 20c, respectively. These screw holes 20 a to 20 c are provided as mounting screw holes when a fixing plate 54 described later is attached to the upper surface of the base 12.

Further, a magnetic force generating yoke portion 22 having a substantially rectangular shape in plan view is formed at the center of the upper surface of the base 12. The magnetic force generating yoke portion 22 is formed at the center in the length direction of the slide passage 14 a provided on the upper surface of the base 12. At the center of the upper surface of the base 12, for example, a disc-shaped concave portion 24 is provided. The magnetic force generating yoke portion 22 is stored and held in the recess 24. In this case, two pits 24a and 24b are provided at the bottom of the recess 24 at an interval in the diameter direction. These two holes 21a and 24b cooperate with screw holes 26a and 26b and screws (not shown) provided in a holding plate 26 described later to hold the magnetic force generating yoke 22 in the recess 24. It is a hole.

The magnetic force generating yoke portion 22 is supported by a disk-shaped holding plate 26 made of a synthetic resin material such as polyacetal (abbreviation: POM) or a non-ferrous metal material such as an aluminum alloy. The holding plate 26 is formed in a size corresponding to the size of the recess 24. A magnetic force generating yoke portion 22 is embedded in the holding plate 26 so that its surface is exposed. In this case, a rectangular hole (not shown) having substantially the same size as the magnetic force generating yoke portion 22 is provided at the center of the holding plate 26. Then, the magnetic force generating yoke portion 22 is fitted into the hole and fixed with, for example, an epoxy adhesive. The holding plate 26 is provided with two screw holes 26a and 26b spaced apart in the diameter direction. The screw holes 26a and 26b are provided corresponding to the positions where the two pit holes 24a and 24b of the concave portion 24 of the base 12 are formed. In order to hold the magnetic force generating yoke portion 22 in the concave portion 24, for example, mounting screws (not shown) and the like are provided on the other main surface of the base 12 in the fool holes 24 a and 24 b and the screw holes 26 a and 26 b. It is inserted from the lower side) and screwed.

As shown in FIGS. 5A and 5B, the magnetic force generating yoke portion 22 serves as a magnetic force generating source, for example, five rectangular magnet bodies 28a, 28b, 28c, 28d, and 28e. including. Each of the five magnet bodies 28a to 28e is formed of, for example, five rectangular magnet pieces made of magnetic steel. In addition, five nonmagnetic members 30a, 30b, 30c, 38d and 30e made of, for example, a rectangular nonmagnetic material are formed on the upper end surfaces of the five magnet bodies 28a to 28e, respectively.

Further, magnetic members 32 a, 32 b, 32 c, 32 d, 32 e, and 32 f made of, for example, six rectangular magnetic bodies are alternately adjacent to both sides of the five magnet bodies 28 a to 28 e in the width direction. It is arranged to be. In the embodiment of the present invention, the magnetic members 32a to 32f are formed of a magnetic material such as cast iron or cast steel. The non-magnetic members 30a to 30e are made of a non-ferrous metal material such as an aluminum alloy, stainless steel, brass, duralumin, a synthetic resin material, or another non-magnetic material.

The magnetic force generating yoke portion 22 has five magnet bodies 28a to 28e and six magnetic members 32a to 32f, which are alternately and adjacently arranged in the width direction in a stripe shape. In this case, the five magnets 28a to 28e and the six magnets 28a to 28e have the same polarity so that the polarity of the magnets 28a to 28e of the five magnets 28a to 28e adjacent to each other with the magnetic members 32b to 32e interposed therebetween is the same. The magnetic members 32a to 32f are arranged in stripes.

The magnetic members 32a and 32b are magnetically attracted to one end face and the other end face in the width direction of one magnet body 28a by the magnetic force of the magnet body 28a, respectively. Similarly, magnetic members 32c, 32d, 32e, and 32f, which are alternately arranged adjacent to the magnets 28b, 28c, 28d, and 28e, are magnetically attached to the magnets 28b, 28c, 28d, and 28e. Adsorbed.

On the base 12, for example, as shown in FIGS. 1, 2, 4 and 5, a sliding plate 34 slidably displaced in the sliding path 14 is arranged. The sliding plate 34 includes, for example, a rectangular plate-shaped support portion 36. The width of the support portion 36 is formed to be substantially the same as the length of the slide passage 14a of the base 12 in the width direction. From the ends of the two opposing sides of the support portion 36, operating portions 38a and 38b in the form of rectangular strips are formed extending in opposite directions. The widths of the operating portions 38a and 38b are formed to be substantially the same as the lengths of the sliding passages 14b and 14c of the base 12 in the width direction, respectively. The support portion 36 and the operation portions 38a and 38b are integrally formed of a magnetic material such as cast iron, cast steel, and other metal materials.

At the center of the support portion 36, a first sliding yoke portion 40 having a substantially rectangular shape in plan view is supported. The first sliding yoke portion 40 is held by a disk-shaped holding plate 42 made of a synthetic resin material such as polyacetal (abbreviation: POM) or a non-ferrous metal material such as an aluminum alloy. The first sliding yoke portion 40 is embedded in the holding plate 42 so that its surface is exposed. In this case, a rectangular hole (not shown) having substantially the same size as the first sliding yoke portion 40 is provided at the center of the holding plate 42. Then, the first sliding yoke portion 40 is fitted into the hole and fixed with, for example, an epoxy-based adhesive.

As shown in FIGS. 5A and 5B, the first sliding yoke portion 40 has, for example, magnetic members 44 a, 44 b, 44 c, and 44 d made of, for example, six rectangular magnetic bodies. , 44e and 44f, and non-magnetic members 46a, 46b, 46c, 46d and 46e made of, for example, five rectangular non-magnetic materials. The six magnetic members 44a to 44f and the five nonmagnetic members 46a to 46e are alternately arranged adjacent to each other in the width direction and arranged in a stripe pattern. In this case, the six magnetic members 44a to 44f and the five non-magnetic members 46a to 46e of the first sliding yoke portion 40 correspond to the six magnetic members 32a to 32f and the five non-magnetic members of the magnetic force generating yoke portion 22. The stripes are arranged alternately and adjacently so as to face in the same direction in the same arrangement as 30a to 30e.

Further, a second sliding yoke portion 48 is formed on the sliding plate 34 at a distance from the first sliding yoke portion 40. The second sliding yoke portion 48 is formed of a magnetic material in a planar shape. The second sliding yoke portion 48 is for closing the magnetizing force exerted by the magnet bodies 28a to 28e of the magnetic force generating yoke portion 22, which will be described later in detail. In the embodiment of the present invention, a step 50 is provided at a portion corresponding to the second sliding yoke 48. That is, the step portion 50 is provided over the entire area of the planar second sliding yoke portion 48 formed from one end side in the length direction of the support portion 36 to one operation portion 38b.

When the sliding plate 34 is slidably disposed in the sliding path 14 of the base 12, positioning members 52a and 52b as positioning means are disposed in the sliding path 14a. In the embodiment of the present invention, the positioning members 52a and 52b are each formed of a non-magnetic material in a rectangular small piece, and one of the positioning members 52a is formed to be longer than the other of the positioning members 52b. The positioning members 52a and 52b are arranged at one end in the width direction of the sliding passage 14a and at one end and the other end in the length direction, respectively.

When the sliding plate 34 is arranged on the sliding path 14 of the base 12, the first sliding yoke portion 40 and the second sliding yoke portion 48 of the sliding plate 34 Positioning is performed between positioning members 52a and 52b in 14a. In this case, when the sliding plate 34 is slid from one side to the other in the length direction of the slide path 14 and one end in the length direction of the support portion 36 is brought into contact with one end of the positioning member 52a, the sliding is performed. The first position on the magnetic force generating yoke portion 22 is set so that the center position of the first sliding yoke portion 40 of the plate 34 and the center position of the magnetic force generating yoke portion 22 exposed on the upper surface side of the base 12 overlap. Is positioned. Conversely, when the sliding plate 34 is slid from one side to the other in the length direction of the slide path 14 and the other end in the length direction of the support portion 36 is brought into contact with one end of the positioning member 52b, The second position on the magnetic force generating yoke portion 22 is set so that the center position of the second sliding yoke portion 48 of the moving plate 34 and the center position of the magnetic force generating yoke portion 22 exposed on the upper surface side of the base 12 overlap. The sliding yoke part 48 is positioned.

As shown in FIG. 2, for example, a rectangular fixing plate 54 is disposed on the upper surface side of the base 12 with the sliding plate 34 interposed therebetween. The length and width of the fixing plate 54 are formed to be the same as the length and width of the base 12. The fixing plate 54 is formed of a synthetic resin material such as polyacetal (abbreviation: POM) or a non-ferrous metal material such as an aluminum alloy. Three screw holes 56a, 56b, 56c are provided at one end and the other end in the width direction of the fixing plate 54, respectively, at intervals in the length direction. The screw holes 56 a to 56 c are provided at positions corresponding to the screw holes 20 a to 20 c provided in the two guide frames 16 and 18 of the base 12. The fixing plate 54 is superimposed on the base 12 from above the sliding plate 34 such that the screw holes 56a to 56c of the fixing plate 54 and the screw holes 20a to 20c of the guide frames 16 and 18 overlap. The fixing screws 58a, 58b, and 58c are inserted into the screw holes 20a to 20c and 56a to 56c, respectively, and screwed.

Further, a fixed yoke portion 60 having a substantially rectangular shape in a plan view is formed at the center of the fixed plate 54. The fixed yoke portion 60 is held by a disk-shaped holding plate 62 made of a synthetic resin material such as polyacetal (abbreviation: POM) or a non-ferrous metal material such as an aluminum alloy. A fixed yoke portion 60 is embedded in the holding plate 62 so that its surface is exposed. In this case, a rectangular hole (not shown) having substantially the same size as the fixed yoke portion 60 is provided at the center of the holding plate 62. Then, the fixed yoke portion 60 is fitted into the hole, and is fixed with, for example, an epoxy-based adhesive.

As shown in FIGS. 5A and 5B, the fixed yoke portion 60 includes, for example, magnetic members 64 a, 64 b, 64 c, 64 d, 64 e and six rectangular magnetic members. 64f and non-magnetic members 66a, 66b, 66c, 66d and 66e made of, for example, five rectangular non-magnetic materials. The six magnetic members 64a to 64f and the five non-magnetic members 66a to 66e are alternately arranged in the width direction in a stripe shape. In this case, the six magnetic members 64a to 64f and the five non-magnetic members 66a to 66e of the fixed yoke portion 60 correspond to the six magnetic members 32a to 32f and the five non-magnetic members 30a to 30e of the magnetic force generating yoke portion 22. The stripes are arranged alternately and adjacently so as to face in the same direction in the same arrangement.

In the holder 10 shown in the embodiment of the present invention, as shown in FIG. 1 and FIG. 5A, for example, the object W is magnetically attracted to the upper surface of the fixed yoke portion 60. By operating the operating portions 38a and 38b of the sliding plate 34, the first sliding yoke portion 40 is slid from one side to the other in the longitudinal direction of the sliding passage 14a. Then, the first sliding yoke portion 40 of the sliding plate 34 is arranged to face the upper surface of the magnetic force generating yoke portion 22 of the base 12. In this case, the center position of the magnetic force generating yoke portion 22 and the center position of the first sliding yoke portion 40 overlap. Specifically, as shown in FIG. 5A, particularly, the entire upper end surfaces of the magnetic members 32a to 32f of the magnetic force generating yoke portion 22 and the entire lower end surfaces of the magnetic members 44a to 44f of the first sliding yoke portion 40. Are overlapped, and the entire upper end surfaces of the nonmagnetic members 30a to 30e of the magnetic force generating yoke portion 22 and the entire lower end surfaces of the nonmagnetic members 46a to 46e of the first sliding yoke portion 40 overlap. Further, the entire upper end surfaces of the magnetic members 44a to 44f of the first sliding yoke portion 40 and the entire lower end surfaces of the magnetic members 64a to 64f of the fixed yoke portion 60 overlap each other. The entire upper end surfaces of the non-magnetic members 46a to 46e and the entire lower end surfaces of the non-magnetic members 66a to 66e of the fixed yoke portion 60 overlap.

In this case, the magnetic flux emitted from each of the N poles of the magnet bodies 28 a to 28 e of the magnetic force generating yoke portion 22 is, as shown by the two-dot chain line in FIG. 22 flows through the magnetic members 32a to 32f of the first sliding yoke portion 40, the magnetic members 44a to 44f of the first sliding yoke portion 40, and the magnetic members 64a to 64f of the fixed yoke portion 60 to the upper surface side of the fixed yoke portion 60. The magnetic members 64a to 64f of the yoke portion 60 pass through the magnetic members 44a to 44f of the first sliding yoke portion 40 and the magnetic members 32a to 32f of the magnetic force generating yoke portion 22 to pass through each of the magnets 28a to 28e. Enter the pole. Therefore, the magnetic force from the magnet bodies 28a to 28e acts on the upper surface side of the fixed yoke portion 60, and a magnetic field is generated. Therefore, when an object W such as a work is placed on the upper surface side of the fixed yoke portion 60, the magnetic fluxes emitted from the respective N poles of the magnets 28a to 28e pass through the object W and pass through the object W. Since it enters the magnetic pole (S pole), the object W 2 is magnetically attracted to the upper surface of the fixed yoke portion 60.

In the holder 10 shown in the embodiment of the present invention, the magnetic poles of the five magnet bodies 28 a to 28 e adjacent to each other with the magnetic members 32 b to 32 e of the magnetic force generating yoke portion 22 interposed therebetween have the same polarity. Therefore, almost all of the magnetic flux emitted from each of the N poles of the magnet bodies 28a to 28e can be effectively applied to the upper surface of the fixed yoke portion 60. That is, the magnetic flux density is increased and the magnetic attraction is increased. Power can be increased. Therefore, the object W to be attracted such as a work placed on the upper surface of the fixed yoke portion 60 is strongly attracted magnetically.

In the holder 10 shown in the embodiment of the present invention, when the object W is removed from the upper surface of the fixed yoke portion 60, for example, as shown in FIG. 1 and FIG. By operating the operating portions 38a and 38b of the sliding plate 34 to displace the second sliding yoke portion 48 from the other side in the longitudinal direction of the sliding passage 14a to one side, the base 12 The second sliding yoke portion 48 of the sliding plate 34 is arranged to face the upper surface of the magnetic force generating yoke portion 22. That is, the center position of the magnetic force generating yoke portion 22 and the center position of the second sliding yoke portion 48 overlap each other. Also, a step of the sliding plate 34 is provided between the entire upper end surfaces of the magnetic members 32a to 32f and the nonmagnetic members 30a to 30e of the magnetic force generating yoke portion 22 and the entire lower end surfaces of the second sliding yoke portions 48. The part 50 forms a gap part 68 as an air layer.

In this case, the magnetic flux emitted from each of the N poles of the magnet bodies 28 a to 28 e of the magnetic force generating part 22 is transferred from the magnetic members 32 a to 32 f of the magnetic force generating yoke part 22 via the gap 68 via the second sliding member. It flows to the moving yoke portion 48, flows again through the gap portion 68 to the magnetic members 32a to 32f of the magnetic force generating yoke portion 22, and enters the respective south poles of the magnet bodies 28a to 28e. At this time, since the flow of the magnetic flux is closed in the magnetic force generating yoke portion 22 and the second sliding yoke portion 48, no magnetizing force acts on the upper surface side of the fixed yoke portion 60. In other words, the magnetic force acting on the upper surface side of the fixed yoke portion 60 can be reduced to zero to release the magnetic attraction force. Therefore, only by operating the slide plate 34, the object W to be sucked on the upper surface of the fixed yoke portion 60 can be easily removed.

In the holder 10 shown in the embodiment of the present invention, in particular, since the gap 68 is formed between the magnetic force generating yoke portion 22 and the second sliding yoke portion 48, the magnetic force An air layer is formed between the generating yoke part 22 and the second sliding yoke part 48. In this case, the magnetic flux generated from the N poles of the magnets 28a to 28e of the magnetic force generating yoke portion 22 flows through the air layer to the second sliding yoke portion 48, and again passes through the air layer. Although it flows to the S poles of the magnet bodies 28a to 28e of the magnetic force generating yoke 22, the magnetic flux hardly passes through the air, so that the magnetic force of the magnetic force generating yoke 22 acting on the second sliding yoke 48 is reduced. The suction force decreases. Therefore, the sliding of the sliding plate 34 when the second sliding yoke portion 48 is disposed on the upper surface of the magnetic force generating yoke portion 22 becomes easy.

In the holder 10 according to the present invention, the object W can be easily magnetically and firmly attracted and fixed at a predetermined position, and the attracting force can be easily released and the object W can be easily released. W can be removed. In particular, in the holder 10 according to the present invention, when the sliding plate 34 is slid and displaced and the second sliding yoke portion 48 is disposed on the magnetic force generating yoke portion 22, the magnetic force generating yoke portion 22 and the second Since the magnetic circuit forms a closed loop with the sliding yoke part 48, the fixed yoke part 60 that magnetically attracts and holds the object W to be attracted is provided on the upper surface of the fixed yoke part 60 with the magnetic flux from the magnetic force generating yoke part 22. The flow is almost completely shut off. In this case, since the residual magnetic flux density remaining on the upper surface of the fixed yoke portion 60 can be extremely reduced, the removal of the object W from the upper surface of the fixed yoke portion 60 can be performed extremely easily.

FIG. 6 is an enlarged exploded perspective view of a main part showing an example of another embodiment of the present invention. The holder 10 shown in FIG. 6 differs from the holder 10 shown in FIGS. 1 to 5 particularly in the configuration of the second sliding yoke portion 48 of the sliding plate 34. In the holder 10 shown in FIGS. 1 to 5, the second sliding yoke part 48 is formed of a magnetic material in a planar shape. However, in the holder 10 shown in FIG. The magnetic material and the non-magnetic material are alternately adjacently formed in stripes. That is, in the holding tool 10 shown in FIG. 6, the second sliding yoke portion 70 includes, for example, five rectangular magnetic members 72a, 72b, 72c, 72d, 72e, and 72f, and five rectangular It is composed of non-magnetic members 74a, 74b, 74c, 74d and 74e made of non-magnetic material. The six magnetic members 72a to 72f and the five non-magnetic members 74a to 74e are arranged alternately and adjacently in the width direction in a stripe shape. The second sliding yoke portion 70 is such that the magnetic members 72a to 72f and the non-magnetic members 74a to 74e are different from the magnetic members 32a to 32f and the non-magnetic members 30a to 30e of the magnetic force generating yoke portion 22. It is formed so as to be arranged in a grid when viewed in plan.

In the holder 10 shown in FIG. 6, when the object W is magnetically attracted and held on the upper surface of the fixed yoke portion 60, for example, as shown in FIG. 1 and FIG. It has the same function and effect as the embodiment shown in FIGS. In the holder 10 shown in FIG. 6, when the object W is detached from the upper surface of the fixed yoke portion 60, as shown in FIGS. 6 and 7, the operating portions 38a and 38b of the sliding plate 34 are moved. By operation, the second sliding yoke portion 70 is placed in a state of being opposed to the upper surface of the magnetic force generating yoke portion 22 of the base 12. That is, the center position of the magnetic force generating yoke portion 22 and the center position of the second sliding yoke portion 48 overlap each other. At this time, the magnetic members 72a to 72f and the non-magnetic The members 74a to 74e are arranged in a lattice shape with respect to the magnetic members 32a to 32f and the non-magnetic members 30a to 30e of the magnetic force generating yoke portion 22 when viewed in plan.

In this case, the magnetic flux emitted from each of the N poles of the magnet bodies 28 a to 28 e of the magnetic force generating yoke part 22 is, in particular, as shown by a two-dot chain line in FIG. From the magnetic members 32a to 32f, the gap flows through the gaps 68 to the respective magnetic members 72a to 72f of the second sliding yoke portion 70. The magnets 28a to 28e enter the respective south poles through the members 32a to 32f. Therefore, the magnetic force generated by the magnetic force generating yoke portion 22 does not act on the upper surface of the fixed yoke portion 60.

In each of the embodiments of the above-described invention, the sliding plate 34 having the first sliding yoke portion 40 and the second sliding yoke portion 48 is slid on the magnetic force generating yoke portion 22. Although the magnetic force is adjusted by the above, the magnetic force may be adjusted by fixing the sliding plate 34 and sliding the magnetic force generating yoke portion 22.

Further, in each of the embodiments of the above-described invention, the sliding means for sliding the first sliding yoke portion 40 and the second sliding yoke portion 48 in order to adjust the magnetic force is provided, for example. Although it was constituted by a combination of the base 12, the guide frames 16, 18 and the sliding plate 34, the sliding means is not limited to these, and the first sliding yoke 40 and the second sliding As long as the moving yoke portion 48 is slidably displaced, the sliding means may be configured by another method.

In each embodiment of the above-described invention, the slide path 14 on which the slide plate 34 slides is formed by the base 12 and the guide frames 16 and 18. It may be formed by providing a groove corresponding to the slideway 14 on one main surface of the base 12. In each of the embodiments of the invention described above, the positioning members 52a and 52b arranged in the slideway 14 are formed as separate bodies. However, these positioning members 52a and 52b are 18 may be integrally formed.

Further, in each of the embodiments of the above-described invention, the step 50 is provided at a portion corresponding to the second sliding yoke 48 so that the magnetic force generating yoke 22 and the sliding plate 34 A gap 68 is formed between the second sliding yoke 48 and the second sliding yoke 48 of the sliding plate 34. It may be formed on any one of the main surfaces. For example, a step portion may be formed on a corresponding portion of the base 12 on which the magnetic force generating yoke portion 22 is arranged.

In the holder 10 shown in each embodiment of the above-described invention, for example, five magnet bodies 28 a to 28 e are provided, but the number of these magnet bodies is, for example, three, two, or One may be provided, and the number can be arbitrarily changed. Also, in the holder 10 shown in each embodiment of the above-described invention, the magnets adjacent to each other with the magnetic member of the magnetic force generating yoke portion 22 interposed therebetween have the same polarity. The magnets may be arranged so that their polarities are different.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the holder of FIG.

FIG. 3 is a perspective view showing an example of a sliding plate applied to the holder of FIG.

4A and 4B show a sliding state of a sliding plate in the holder shown in FIGS. 1, 2 and 3, and FIG. 4A shows a first sliding yoke portion of the sliding plate facing a magnetic force generating yoke portion. It is a principal part top view which shows the state which arrange | positioned, (B) is a principal part top view which shows the state which has arrange | positioned the 2nd sliding yoke part of the sliding plate on the magnetic force generating yoke part.

FIG. 5 is a diagram showing a magnetic force generating yoke portion of the holder shown in FIGS.
FIG. 4 is an enlarged schematic view of a main part showing an arrangement of a second sliding yoke part and a fixed yoke part, FIG. It is a principal part enlarged illustration figure which shows arrangement | positioning at the time.

FIG. 6 is an enlarged exploded perspective view of a main part showing an example of another embodiment of the present invention.

FIG. 7 is an enlarged schematic view of a main part showing the arrangement of a magnetic force generating yoke part, first and second sliding yoke parts, and a fixed yoke part in the holder shown in FIG.

FIG. 8 is an illustrative sectional view showing an example of a conventional transport jig as a background of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Holder 12 Base 14 Sliding path 14a, 14b, 14c Sliding path 16a, 18a Long side 16b, 16c, 18b, 18c Short side 20a-20c, 26a-26b, 56a-56c Screw hole 22 Magnetic force generation Yoke part 24 Depression 24a, 24b Dummy hole 26, 42, 62 Holding plate 28a-28e Magnet 30a-30e, 46a-46e, 66a-66e, 7
4a to 74e Non-magnetic member 32a to 32f, 44a to 44f, 64a to 64f, 7
2a to 72f Magnetic member 34 Sliding plate 36 Supporting part 38a, 38b Operating part 40 First sliding yoke part 48, 70 Second sliding yoke part 50 Step part 52a, 52b Positioning member 54 Fixed plate 58a to 58c Fixed Screw 60 Fixed yoke 68 Gap W

Claims (10)

[Utility model registration claims] 1. A planar magnetic force generating yoke portion in which a magnetic body and a magnet body are alternately formed adjacent to each other. The magnetic force generating yoke portion is disposed on one main surface side of the magnetic force generating yoke portion, and the magnetic body and the non-magnetic body are separated from each other. A first sliding yoke portion formed in the same arrangement as the magnetic body and the magnet body of the magnetic force generating yoke in the same direction and alternately adjacent to each other, and a second slide for closing the magnetizing force of the magnet body A sliding portion having a yoke portion, and the first and second sliding yoke portions are selectively slidably displaced by the magnetic force generating yoke. The magnitude of the magnetizing force exerted on the other main surface side of the sliding portion opposite to the magnetic force generating yoke portion so that the magnetic pole of the magnet body is opposed to the one main surface side of the portion. A sliding means for controlling an object to be detachably attached to the other main surface side of the sliding portion by magnetically It was set to be adsorbed on, the retainer. 2. A planar fixed yoke portion in which a magnetic material and a non-magnetic material are alternately arranged adjacent to each other. A planar magnetic force generating yoke portion formed in the same arrangement as the magnetic and non-magnetic materials of the fixed yoke portion and alternately adjacent to each other in the same direction; sliding between the fixed yoke portion and the magnetic force generating yoke portion; A first planar sliding member which is movably disposed, and in which a magnetic material and a non-magnetic material are alternately formed adjacent to each other in the same arrangement and in the same direction as the magnetic material and the magnet material of the magnetic force generating yoke portion; A yoke portion, formed on the same surface as the first sliding yoke portion,
A sliding portion having a second sliding yoke portion for closing the magnetizing force of the magnet body, and the first sliding yoke portion or the second sliding yoke portion being slidably displaced.
The sliding yoke portion is selectively disposed opposite to one main surface of the magnetic force generating yoke portion, and a slider for controlling the intensity of the magnetizing force exerted by the magnetic pole of the magnet body on the other main surface side of the fixed yoke portion. A holder comprising a moving means, wherein the object to be attracted is magnetically attracted to the other main surface side of the fixed yoke portion in a detachable manner. 3. The holder according to claim 1, wherein the second sliding yoke portion is formed of a planar magnetic body. 4. The second sliding yoke portion is formed of a magnetic material and a non-magnetic material alternately adjacent to each other and formed in a planar shape, and the second sliding yoke portion is formed of one of the magnetic force generating yoke portions. The magnetic body of the second sliding yoke portion is formed so as to be arranged in a grid pattern with respect to the magnetic body of the magnetic force generating yoke portion when the magnetic body is arranged opposite to the main surface. Or the holder according to claim 2. 5. The holder according to claim 1, wherein a gap is formed between the magnetic force generating yoke and the second sliding yoke. 6. The gap portion is formed by providing a step on one of the main surfaces of the magnetic force generating yoke portion and the second sliding yoke portion facing each other. A holder according to item 1. 7. The first sliding yoke portion and the second sliding yoke portion.
The first sliding yoke or the second sliding yoke is placed on one main surface of the magnetic force generating yoke so that the center position of the sliding yoke is overlapped with the center of the magnetic force generating yoke. The holder according to any one of claims 1 to 6, further comprising a positioning means for positioning the holder. 8. A base, a planar magnetic force-generating yoke portion exposed on one main surface of the base and formed of magnetic bodies and magnet bodies alternately adjacent to each other; A first sliding member which is slidably disposed on the surface side, and in which a magnetic body and a non-magnetic body are alternately formed in the same direction and in the same direction as the magnetic body and the magnet body of the magnetic force generating yoke portion and are adjacent to each other. A sliding plate comprising: a moving yoke portion; and a planar second sliding yoke portion formed at a distance from the first sliding yoke portion and closing a magnetizing force of the magnet body. A step portion formed on at least one of the opposing main surfaces of the sliding yoke portion and the magnetic force generating yoke portion of the base, a magnetic member fixed to the base with the sliding plate interposed therebetween; The non-magnetic material and the magnetic material of the magnetic force generating yoke portion are alternately adjacent to each other in the same direction in the same arrangement as the magnetic material. A fixing plate provided with a planar fixed yoke portion to be provided, and the first sliding yoke portion or the second sliding portion formed on the base and sliding the sliding plate. Positioning the first sliding yoke or the second sliding yoke on one main surface of the magnetic force generating yoke so that the center position of the moving yoke overlaps the center of the magnetic force generating yoke. One of the magnetic force generating yoke portions by selectively displacing the slide plate so that the first slide yoke portion or the second slide yoke portion is displaced. The magnet is disposed opposite to the main surface to control the strength of the magnetizing force exerted by the magnetic pole of the magnet body on the exposed surface of the fixed yoke of the fixed plate, and is detachably mounted on the exposed surface of the fixed yoke. A holder that magnetically adsorbs the adsorbed material. 9. The magnetic force generating yoke according to claim 1, wherein the magnetic poles of the plurality of magnet bodies adjacent to each other with the plurality of magnetic bodies interposed therebetween have the same polarity. The holder according to any one of the above. 10. The holder according to claim 1, wherein a non-magnetic material is laminated on the magnet body.