JP2005287113A - Adhesive-laminated core and armature employing it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminated core in which a core can be integrated rigidly, mechanical processing such as tapping or drilling can be carried out easily, fixing tap structure can be designed easily, and divided teeth cores can be secured rigidly by means of bolts. <P>SOLUTION: A plurality of sheets of cores made of a silicon steel plate coated with adhesive are bonded in the laminating direction to produce an adhesive-laminated core 1. The silicon steel plate is punched into comb-tooth shape, the bonding laminating surface is subjected to tapping 2 and then a coil 9 is fitted from the forward end side of comb-tooth shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a laminated iron core and a laminated iron core with a coil using the same.

In a conventional core structure, a single core that has been punched is laminated by caulking or the like (see, for example, Patent Documents 1 and 2).
JP-A-9-70166 JP 2002-95232 A

As shown in FIGS. 4 and 5, the armature described in Patent Document 1 is a laminate in which an iron core is formed by laminating and laminating a plurality of uniform-shaped laminates punched from an electromagnetic steel plate material and bonding the periphery. In the process of punching and manufacturing a laminated plate, a required number of winding storage openings are punched and formed in a region along one edge of the laminate, so that the winding is stored along the edge of the laminated body after lamination and bonding. A large number of grooves are formed, and windings (not shown) such as A-phase to C-phase are mounted. On the other hand, the second region along the edge opposite to the one end edge of the laminate is substantially convex at a predetermined interval. By punching and forming openings having shapes, pocket holes 5 and 6 are formed at predetermined intervals in the laminated body after lamination and bonding.
The pocket holes 5 and 6 are formed as grooves having a substantially convex cross section penetrating in the laminating direction, and have an opening on the upper surface of the laminated body 14. The laminated body and the driven body are located in the pocket holes 5 and 6. A connecting member such as a T-shaped nut 3 or a square steel bar 4 in which a tap for connecting with a moving body is processed is inserted and stored.
The coupling members 3 and 4 are provided with female screw holes 3a and 4a in advance, so that a bolt 8 'can be used.
Further, in order to firmly integrate the core, tightening is performed with bolts 8 via spacers 7 from above and below in the stacking direction of the cores. By this tightening, the armature mounting surface composed of the upper surface of the laminated body and the lower bottom surface of the moving body are brought into close contact with each other and bonded.
Laminating and bonding plates with a uniform shape punched from electromagnetic steel sheets is performed in Patent Document 1, but this is to bond the periphery, and there is no explanation for bonding surfaces to each other. Therefore, strong bonding cannot be performed, and the coupling members 3 and 4 are required.
In addition, if the bonding is performed only around the core, the central portion is not fixed, so that the rigidity of the core is insufficient, and the entire iron core is easily deformed by electromagnetic noise or the resin injection pressure when the entire core is resin-molded.

  As shown in FIG. 6, the armature described in Patent Document 2 has a dovetail shape in which the armature core is formed by sequentially arranging teeth having engaging protrusions 13 a formed for each of a plurality of substantially I-shaped blocks. The yoke is integrally coupled to a yoke having an engaging groove 13b.

As described above, in order to firmly integrate the core, it is necessary to perform tightening with a bolt or the like via a spacer, and in order to constitute a core mounting tap, a T-shaped nut processed with a tap It is necessary to insert a connecting member such as a steel bar or square steel bar into the core, resulting in an increase in the number of parts.
In addition, the fixing force in the direction perpendicular to the laminated surface is weak and the structure cannot be tapped, tipped, etc., so if the electromagnetic part (winding part) size increases to improve thrust within the same dimensions, the core The space of the machine structure part of the mounting tap part is no longer available.
Also, if the tip of the tee score is semi-closed, the coil cannot be inserted from the outside, so that when the teeth portion is divided, the main body yoke core portion and the tee score portion are fastened by fitting the dovetail grooves 13a and 13b. As a result, the main body yoke core portion and the tee score portion cannot be firmly fixed, and as a result, the assembly accuracy deteriorates, which adversely affects the characteristics (cogging).
Therefore, the present invention has been made in view of such problems, and has a core structure that enables reduction in the number of parts, space reduction by direct tapping on the core, and firm fixing with bolts of the teascore portion. The purpose is to provide.

In order to solve the above problems, the invention of the bonded laminated core according to claim 1 is characterized in that a plurality of silicon steel cores coated with an adhesive are bonded and fixed in the stacking direction.
According to a second aspect of the present invention, in the bonded laminated iron core according to the first aspect, the adhesive is coated on both surfaces in the state of a hoop material in advance.
A third aspect of the present invention is the bonded laminated iron core according to the first or second aspect, wherein the silicon steel sheet iron core has a comb-teeth shape.
According to a fourth aspect of the present invention, in the bonded laminated iron core according to any one of the first to third aspects, the shape of the silicon steel sheet iron core is comb-like, and the bonded laminated surface is tapped. It is characterized by that.
According to a fifth aspect of the present invention, in the bonded laminated iron core according to the first or second aspect, the shape of the silicon steel sheet iron core is T-shaped, and the bonded laminated surface at the tip end of the T-shaped center rod is subjected to drilling. It is characterized by that.
The invention of the armature according to claim 6 is characterized by comprising the bonded laminated iron core according to any one of claims 1 to 5 and a coil fitted to the protruding portion of the bonded laminated core.

  As described above, since the laminated cores are firmly bonded to each other by using the adhesive core, the number of parts that integrate the core can be reduced, and machining to the core becomes possible. The taps can be processed directly, and the divided teeth in the semi-closed structure can be firmly fixed with bolts.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view of a core according to a first embodiment of the present invention.
In the figure, 1 is an adhesive laminated iron core, 2 is a tap directly processed on the adhesive laminated iron core 1, and 9 is a coil.
According to the present invention, the bonded laminated iron core 1 is formed by firmly fixing a steel plate obtained by punching a silicon steel plate into a comb-tooth shape and another steel plate punched into a comb-teeth shape by bonding.
Since it is firmly fixed by bonding, such processing as directly processing the tap 2 is possible.
When an adhesive core is not used, the core cannot be tapped as shown in FIGS. 4 and 5, and therefore, a joined part obtained by processing the tap nuts 3a and 4a on the T-type nut 3 or the square steel bar 4 must be inserted into the core. In addition, since the fastening of the core itself was weak, it was necessary to fasten with the bolt 8 through the plate 7. Further, when the space of the electromagnetic part (coil) 9 is increased by improving the thrust, the space for forming the T-type nut 3 and the square steel bar 4 is eliminated.

FIG. 2 is an exploded perspective view in which the bonded laminated iron core is disassembled and expanded.
In the figure, 141 is a silicon steel plate punched out in a comb-teeth shape, and K is an adhesive applied to the comb-teeth silicon steel plate.
Thus, the comb-like silicon steel plates 141 coated with the adhesive are overlapped and pressed and heated simultaneously, so that the comb-like silicon steel plates 141 are firmly bonded and fixed. In this case, since the adhesive is coated on both surfaces in the state of a hoop material in advance, it is not necessary to apply the adhesive. In addition, when a silicon steel plate is pulled out in a comb-like mold, a caulking structure can be used to align and stack the specified dimensions within the mold. Pressing and heating) can be immediate.

(Second embodiment)
FIG. 3 is a perspective view of the core according to the second embodiment of the present invention.
In the figure, 11 is an adhesive laminated tooth, 12 is an adhesive laminated yoke, and 9 is a coil. The adhesive laminated tooth 11 has a T shape composed of a horizontal bar 11 a and a central vertical bar 11. 10 is a drilling process performed on the adhesive laminated yoke 12, and 10 b is a tap process performed on the T-shaped adhesive laminated tooth 11.
As described above, according to the present invention, since the adhesive lamination is hardened by the adhesion, it is possible to perform the drilling process 10 and the like. Therefore, when the tip of the tea score 11 is a semi-closed structure (T-shaped) 11a. After the coil 9 is inserted, the bolt 12 can be firmly fixed. If the semi-closed structure is used, the coil 9 cannot be inserted unless the core is divided into two parts, the tooth 11 and the yoke 12.
In the prior art, as shown in FIG. 6, since the fixing is performed by the dovetail fitting couplings 13a and 13b, the main body yoke core part and the teascore part cannot be firmly fixed, and as a result, the assembly accuracy deteriorates. Was an adverse effect of cogging.

As described above, according to the present invention, the core can be firmly integrated by using an adhesive core capable of bonding one core to another, and tapping and drilling machining is easy. The mounting tap configuration can be designed easily.
Further, there is an effect that the divided tea score can be firmly fixed with a bolt or the like.

It is a perspective view of the core which concerns on 1st Example of this invention. It is the disassembled perspective view which disassembled and expanded the adhesion lamination iron core. It is a perspective view of the core which concerns on 2nd Example of this invention. It is a perspective view of the conventional linear motor iron core structure. It is AA side sectional drawing of FIG. It is a perspective view of the conventional linear motor iron core structure.

Explanation of symbols

1 Adhesive core 2 Tap (for mounting)
3 T-type nut 3a Tap 4 Square steel bar 4a Tap 5 Square hole 6 Square hole 7 Plate 8 Bolt 9 Coil 10 Drill hole 11 Tea score 11a Tea score tip 12 Body core 13a Dovetail (convex)
13b Dovetail (concave)

Claims (6)

  An adhesive laminated core comprising a plurality of silicon steel cores coated with an adhesive and bonded and fixed in the laminating direction.   The adhesive laminated core according to claim 1, wherein the adhesive is coated on both surfaces in the state of a hoop material in advance.   The bonded laminated iron core according to claim 1 or 2, wherein the silicon steel sheet iron core has a comb-like shape.   The bonded laminated iron core according to any one of claims 1 to 3, wherein the silicon steel sheet iron core has a comb-teeth shape and is tapped on the bonded laminated surface.   The bonded laminated iron core according to claim 1 or 2, wherein the silicon steel sheet iron core has a T-shape, and the bonded laminated surface at the tip end of the T-shaped middle rod is subjected to a drilling process.   An armature comprising the bonded laminated core according to any one of claims 1 to 5 and a coil fitted to a protruding portion of the bonded laminated core.

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