JP2003259574A - Core, armature and motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a core that makes it possible to easily separate winding from the core when recycled, while suppressing increase in the number of components as few as possible. <P>SOLUTION: The core 6 is constituted by linking to each other a plurality of cores 8 having a part in the circumferential direction of a base 6b and a prescribed number (3 pieces) of teeth 6c. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core having a structure capable of easily separating a winding wound around a tooth, an armature provided with the core, and a motor.

[0002]

2. Description of the Related Art In recent years, it has been required in the field of motors to have a structure that can be easily recycled. When the motor is recycled, it is compressed and destroyed by a compression destruction device (shredder).

[0003]

By the way, in this case,
An armature core, which is one of motor components, is generally formed by laminating a plurality of iron plate materials (core sheets), and simply deforms when compressed by a shredder.
For this reason, the shape of the teeth of the core becomes distorted, and the winding wound around the teeth becomes difficult to unravel. As a result, it becomes difficult to separate the core and the winding, which require separation, and it is required to facilitate this.

In addition, such an armature (core) is naturally required to suppress the increase in the number of parts as much as possible.
The present invention has been made to solve the above problems, and an object thereof is to suppress an increase in the number of parts as much as possible,
An object of the present invention is to provide a core that can easily separate the winding and the core during recycling, an armature and a motor including the core.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a base portion and a plurality of teeth around which a winding is wound and extends outward from an outer edge portion of the base portion. And a plurality of core parts having a predetermined number of teeth and a part of the base portion in the circumferential direction.

According to a second aspect of the invention, in the core according to the first aspect, the core component is a unitary component. According to a third aspect of the present invention, there is provided a core having a base portion and a plurality of teeth around which a winding is wound and which extends outward from an outer edge portion of the base portion, the core portion forming a central portion of the base portion. A plurality of core parts and a plurality of second core parts having a predetermined number of teeth and a part of the base part in the circumferential direction other than the first core parts are connected to each other.

According to a fourth aspect of the present invention, in the core according to the third aspect, a through hole for fixing a rotation shaft is provided in a central portion of the base portion, and the first core component includes: The through hole is formed.

According to a fifth aspect of the present invention, in the core according to any one of the first to fourth aspects, the core parts are integrally formed with connecting means for connecting with each other. According to a sixth aspect of the present invention, in the core according to the fifth aspect, the connecting means has an engaging concave portion and an engaging convex portion that engage with each other in a plane in a direction orthogonal to the axial direction.

According to a seventh aspect of the present invention, in the core according to the fifth aspect, the core component is made of a magnetic metal plate material, and a core sheet is formed by combining the components.
A core is formed by stacking a plurality of core sheets in the axial direction, and the connecting means is a caulking portion that connects the core components in the axial direction, and the core is provided between adjacent core sheets. The core sheets of the respective layers are arranged so as to be displaced in the circumferential direction so that the core parts of the adjacent layers straddle the breaks of the parts, and the caulking portions connect the core parts in the axial direction.

The invention according to claim 8 is an armature provided with the core according to any one of claims 1 to 7. A ninth aspect of the present invention is a motor including an armature having the core according to any one of the first to seventh aspects.

(Operation) According to the invention described in claim 1,
The core has a base portion and a plurality of teeth around which a winding is wound and which extends outward from an outer edge portion of the base portion, and a core component having a part of the base portion in the circumferential direction and a predetermined number of teeth. , Are connected in a plurality. As a result, at the time of recycling, when compressed by a compression destruction device (shredder) and destroyed, when the compression force acts on the core, the core composed of a plurality of core components is likely to be destroyed from the connecting portion of each core component. , The core parts are disassembled. for that reason,
The winding is easy to unwind, and the winding and the core (core component) that need to be separated can be easily separated. Further, since the core component is formed for each predetermined number of teeth, the increase in the number of components can be suppressed as much as possible.

According to the second aspect of the present invention, since the core component is a single-shaped component, the cost for the core component can be reduced. According to the invention described in claim 3, the core has a base portion and a plurality of teeth that extend outward from an outer edge portion of the base portion and around which a winding is wound, and a center portion of the base portion is provided. A plurality of first core components to be configured and a plurality of second core components having a predetermined number of teeth and a part of the base portion in the circumferential direction other than the first core component are connected to each other. As a result, at the time of recycling, when compressed by a compression destruction device (shredder) and destroyed, when the compression force acts on the core, the core composed of a plurality of core components is likely to be destroyed from the connecting portion of each core component. , The core parts are disassembled. Therefore, the winding can be easily unwound, and the winding and the core (core component) that need to be separated can be easily separated. Further, since the core component is formed for each predetermined number of teeth, the increase in the number of components can be suppressed as much as possible.

According to the fourth aspect of the invention, the first core component is formed with a through hole for press-fitting the rotary shaft. As a result, the through hole for press-fitting the rotary shaft is 1
Since it is formed of individual parts, the fixing force between the rotary shaft and the core can be increased.

According to the fifth aspect of the present invention, the core parts are integrally formed with the connecting means for connecting them to each other. This reduces the number of places where special means for connection such as adhesion and welding are used. Alternatively, it is not necessary to use these.

According to the sixth aspect of the invention, the connecting means has the engaging concave portion and the engaging convex portion that engage with each other in the plane orthogonal to the axial direction. Accordingly, in the plane direction, the core recesses and the engagement protrusions can firmly connect the core components.

According to the seventh aspect of the invention, the core component is made of a magnetic metal plate material, a core sheet is formed by a combination of the components, and a plurality of core sheets are laminated in the axial direction to form a core. It Then, the core, between the adjacent core sheets, the core sheet of each layer is arranged so as to be displaced in the circumferential direction so that the core component of the adjacent layer straddles the cut of the core component, and the caulking portion causes the core component to move in the axial direction. Concatenated and composed. Thereby, each core component can be connected in the axial direction and the circumferential direction only by the crimped portion.

According to the invention described in claim 8, since the armature is provided with the core described in any one of claims 1 to 7, an increase in the number of parts can be suppressed as much as possible, and at the time of recycling. In, the winding and the core can be easily separated.

According to the invention described in claim 9, since the motor is provided with the armature having the core according to any one of claims 1 to 7, an increase in the number of parts can be suppressed as much as possible. Moreover, at the time of recycling, the winding and the core can be easily separated.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the motor 1 of this embodiment
Has a cylindrical yoke housing 2. A pair of magnets 3 are fixed to the inner surface of the yoke housing 2. Inside the magnets 3, the armature 4
Is rotatably housed.

The armature 4 includes a rotating shaft 5, a core 6 and a winding 7. The rotating shaft 5 is made of a rigid metal body and is formed in a cylindrical shape. The core 6 has a cylindrical base portion 6b having a through hole 6a (circular cross-section) into which the rotary shaft 5 is press-fitted, and a radial outward from the outer peripheral surface (outer edge portion) of the base portion 6b in the radial direction. Twelve teeth 6 extending at equal intervals
It consists of c and. Further, the tip end portions of the teeth 6c have pole shoe portions 6d extending arcuately toward the tip end portions of the adjacent teeth 6c so as to close the slots between the teeth 6c. The windings 7 are wound around such teeth 6c by concentrated winding, which is wound for each tooth 6c, or distributed winding, which is wound over a plurality of teeth 6c. , Only part of the winding 7 is shown). Incidentally, when the winding 7 is distributedly wound, the core 6 of the present embodiment is composed of a plurality of core components 8. Therefore, when the winding 7 is wound over a plurality of teeth 6c, The wire 7 will tighten each core component 8,
The strength of the core 6 can be sufficiently secured.

As the core 6, one core sheet 9 is formed by using four core parts 8 made of an iron plate material as shown in FIG.
And the core sheet 9 is laminated in the axial direction. The core component 8 includes three teeth 6c and a base portion 6.
and a part of b (1/4 part in the circumferential direction). A part of the base portion 6b serves as a connecting portion 8a for connecting the core component 8. Three caulking portions 8b corresponding to the teeth 6c are formed on the connecting portion 8a. The caulking portion 8b is composed of a protrusion that is ejected from the front surface toward the back surface, and has a concave portion on the front surface and a protrusion on the rear surface. As shown in FIG. 1, such caulked portions 8b are arranged at equal intervals on a concentric circle having the center of the core 6 as its center.

As shown in FIG. 1, four core parts 8 constitute one core sheet 9, and the core sheet 9 below the core sheet 9 is provided with respect to the core sheet 9, as shown in FIG. The tooth 6c (the crimped portion 8b) is arranged by being shifted by one, that is, by 30 ° in the counterclockwise direction. Then, the core sheet 9 (core component 8) is crimped by the crimp portion 8b (the protrusion of the crimp portion 8b of the upper core sheet 9 is press-fitted into the concave portion of the crimp portion 8b of the lower core sheet 9). Connected to each other. Similarly, as shown in FIG. 3, with respect to the core sheet 9 shown in FIG. 2, the core sheet 9 as the lower layer is arranged with one tooth 6c (crimped portion 8b) offset in the counterclockwise direction. , Are connected by the caulking portion 8b. In this case, by shifting the core sheets 9 of the respective layers in the circumferential direction, the cuts of the core component 8 (coupling portion 8a) between the adjacent core sheets 9 are the core component 8 of the adjacent layer
Since the (connecting portion 8a) is disposed so as to straddle, the crimping portion 8b also connects the core component 8 in the circumferential direction.
Therefore, each core component 8 can be connected in the axial direction and the circumferential direction only by the caulking portion 8b without using any special means for connection such as adhesion or welding. The core 6 is formed by stacking a plurality of core sheets 9 in this manner.

The armature 4 having such a structure is compressed and broken by a compression breaking device (shredder) at the time of recycling. At this time, when a compressive force acts on the core 6, the core 6 including the plurality of core components 8 is easily broken from the connecting portion 8a and is disassembled for each core component 8. Therefore, the winding 7 is easy to unwind, and the winding 7 and the core 6 that need to be separated can be easily separated.

As described above, this embodiment has the following effects. (1) The core 6 is configured by connecting a plurality of core components 8 having a part of the base portion 6b in the circumferential direction and a predetermined number (three) of teeth 6c. Accordingly, when a compressive force generated by a compression destruction device (shredder) acts on the core 6 during recycling, the core 6 including a plurality of core parts 8
Is easily broken from the connecting portion of each core component 8 and is disassembled for each core component 8. Therefore, the winding 7 is easy to unwind, and the winding 7 and the core 6 (core component 8) that need to be separated can be easily separated. Further, since the core component 8 is formed for each predetermined number (3) of teeth 6c, an increase in the number of components can be suppressed as much as possible.

(2) Since the core component 8 is a single-shaped component, the cost of the core component 8 can be reduced. (3) In the core 6, the core sheets 9 of the respective layers are arranged so as to be shifted in the circumferential direction between the adjacent core sheets 9 so that the core component 8 of the adjacent layer straddles the cut of the core component 8, and the crimped portion 8b is formed. The core component 8 is configured to be coupled in the axial direction. As a result, the core parts 8 can be connected in the axial direction and the circumferential direction only by the caulking portion 8b, and it is not necessary to use a special means for connection such as bonding or welding.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the same components as those in the above-mentioned embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 5, the armature 1 of the present embodiment.
0 includes a rotating shaft 5, a core 11, and a winding 7.
Similar to the core 6 of the first embodiment, the core 11 includes a base portion 11b having a through hole 11a and a pole shoe portion 11d.
It has 12 teeth 11c having.

Such a core 11 is composed of a plurality of core parts 12 made of an iron plate material as shown in FIG. This core component 12 is similar to the core component 8 of the first embodiment, and the connecting portion 12 that forms a part of the base portion 11b.
While having a, the crimp portion 8b is omitted.
Then, in the core 11 of the present embodiment, the connecting portions 12a of each core component 12 are bonded to each other by adhesion or welding.
One core sheet 13 as shown in FIG. 1 is formed, and the core sheet 13 is laminated in the axial direction. In this case, the core components 12 may be overlapped and joined so as to be aligned in the axial direction, or the core sheets 13 of the respective layers may be displaced in the circumferential direction and joined as in the first embodiment. Good.

As described above, this embodiment has the following effects. (1) The core 11 has a base portion 1 as in the first embodiment.
Part of the circumferential direction of 1b and a predetermined number of teeth (3) 11
A plurality of core components 12 having c are connected to each other. As a result, at the time of recycling, when the compression force by the compression destruction device (shredder) acts on the core 11, the core 11 including the plurality of core components 12 is easily broken from the connecting portion (joining portion) of each core component 12, Each core component 12 is disassembled. Therefore, the winding 7 is easy to unwind, and the winding 7 and the core 11 (core component 12) that need to be separated
And can be easily separated. Also, a predetermined number (3)
Since the core component 12 is configured for each tooth 11c of
The increase in the number of parts can be suppressed as much as possible.

(2) Also in this embodiment, the core component 12
Since is composed of a single-shaped component, the cost for the core component 12 can be reduced. (Third Embodiment) A third embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the same components as those in the above embodiment are designated by the same reference numerals,
The description is omitted.

As shown in FIG. 7, the armature 2 of the present embodiment.
0 includes a rotating shaft 5, a core 21, and a winding 7.
Similar to the core 6 of the first embodiment, the core 21 includes a base portion 21b having a through hole 21a and a pole shoe portion 21d.
It has 12 teeth 21c having.

The core 21 as described above includes a first core component 22 made of an iron plate material as shown in FIG.
The second core component 2 made of an iron plate material as shown in (b)
3 and 3. The first core component 22 has a substantially square shape and constitutes the central portion of the base portion 21b. That is, the first core component 22 is formed with the through hole 21a for press-fitting the rotary shaft 5. Also, the first core component 22
Engagement recesses 22a for connecting and fixing the second core component 23 are formed on the respective sides of the. On the other hand, the second core component 23 has three teeth 21c and a part of the base portion 21b (a portion of a quarter in the circumferential direction, an outer edge portion other than the first core component 22). A part of the base portion 21b serves as a connecting portion 23a for connecting the first core component 22. The engaging recess 2 of the first core component 22 is provided in the connecting portion 23a.
2a to engage the second core component 2 with respect to the core component 22.
An engaging convex portion 23b for fixing 3 is formed.
The core 21 is connected to each other by using one first core component 22 and four second core components 23 to form one core sheet 24 as shown in FIG.
Are laminated in the axial direction. The core sheet 2
4 are joined in the axial direction by, for example, adhesion or welding.

When a compressive force generated by a compression destruction device (shredder) acts on the core 21 during recycling, the core 21 composed of a plurality of core parts 22 and 23 is easily broken from its connecting portion 23a, and the core part 22 is easily broken. , 23
It is decomposed every time. Therefore, the winding 7 is easy to unwind, and the winding 7 and the core 21 that need to be separated can be easily separated.

Moreover, the connecting portion 23a of the second core component 23
In the neck, a narrow neck portion 23 is provided between the teeth 21c.
c is constructed. Therefore, the second core component 23 is easily broken from the neck portion 23c of each tooth 21c, and can be further separated for each tooth 21c. Therefore,
The winding 7 is easier to unwind.

Further, in this embodiment, the through-hole 21a for press-fitting the rotary shaft 5 has a single component (first core component 22).
Since it is formed by, the fixing force between the rotary shaft 5 and the core 21 can be increased, and the two can be firmly connected to each other.

As described above, this embodiment has the following effects. (1) The core 21 is the first part that constitutes the central portion of the base portion 21b.
The core component 22 and the first core component 22 in the base 21b
Part of the circumferential direction other than and a predetermined number (3) of teeth 21
A plurality of second core components 23 having c are connected to each other. As a result, at the time of recycling, when the compression force by the compression destruction device (shredder) acts on the core 21, the core 21 composed of the plurality of core parts 22 and 23 becomes
The core parts 22 and 23 are easily broken from the connecting parts, and the core parts 22 and 23 are disassembled. Therefore, the winding 7 is easy to unwind, and the winding 7 and the core 21 (core parts 22 and 23) that need to be separated can be easily separated. or,
Since the core component 23 is formed for each predetermined number (three) of teeth 21c, the increase in the number of components can be suppressed as much as possible.

(2) In the connecting portion 23a of the second core component 23, a narrow neck portion 23c is provided between each tooth 21c.
Is configured. Therefore, the second core component 23 is easily broken from the neck portion 23c of each tooth 21c, and can be further separated for each tooth 21c. Therefore, the winding 7 can be more easily unwound.

(3) Through hole 2 for press-fitting the rotary shaft 5
Since 1a is formed of one component (first core component 22), the fixing force between the rotary shaft 5 and the core 21 can be increased.

(4) First core component 22 and second core component 2
3 can be firmly connected to each other in the circumferential direction by the engaging concave portion 22a and the engaging convex portion 23b. Further, in this case, it is not necessary to use special means for connection such as bonding and welding in the circumferential direction. Therefore, it is only necessary to use bonding or welding in the axial direction, and the number of joints can be reduced.

The embodiment of the present invention may be modified as follows. In each of the above-described embodiments, the cores 6, 11, 21 are configured by stacking a plurality of iron plate materials in the axial direction, but a sintered body obtained by sintering (forming) magnetic metal powder (SMC) is used. You may comprise. In this case, the core parts 8, 12, 22, 23
May be continuous in the axial direction.

The core parts 8, 12, 2 of the above embodiments
The shapes of 2 and 23 are not limited to this, and may be changed appropriately. For example, the number of teeth 6c, 11c, 21c in the core parts 8, 12, 23 may be other than three. Further, although the core parts 8, 12, and 23 have a single part shape, a plurality of kinds of part shapes may be provided. Further, the core component 22 may have a substantially circular shape. Further, the core part 22 is provided with an engaging convex portion, and the core part 23
An engaging recess may be provided in the. Further, the core parts 22 and 23 may be provided with a crimped part like the core part 8.

The configurations of the motor 1 and the armatures 4, 10 and 20 of each of the above-mentioned embodiments may be appropriately changed other than the above.

[0044]

As described in detail above, according to the present invention,
A core that can easily separate the winding and the core during recycling while suppressing the increase in the number of parts as much as possible,
An armature and a motor including the core can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of a motor including an armature according to a first embodiment.

FIG. 2 is a sectional view of an armature.

FIG. 3 is a sectional view of an armature.

FIG. 4 is a plan view of a core component.

FIG. 5 is a sectional view of an armature according to a second embodiment.

FIG. 6 is a plan view of a core component.

FIG. 7 is a sectional view of an armature according to a third embodiment.

FIG. 8 (a) is a plan view of the first core component,
(B) is a plan view of the second core component.

[Explanation of symbols]

4, 10, 20 ... Armature, 5 ... Rotating shaft, 6, 11, 21
... core, 6b, 11b, 21b ... base, 6c, 11c,
21c ... Teeth, 8 ... Core parts, 8b ... Caulking portion as connecting means, 9 ... Core sheet, 12 ... Core parts, 21
a ... through hole, 22 ... first core component, 23 ... second core component, 22a ... engaging concave portion as connecting means, 23b ... engaging convex portion as connecting means.

Claims (9)

[Claims] 1. A core having a base portion and a plurality of teeth extending outward from an outer edge portion of the base portion and around which windings are wound, wherein a part of the base portion in a circumferential direction and a predetermined number of the teeth. A core characterized by being configured by connecting a plurality of core components having the above. 2. The core according to claim 1, wherein the core component is a single-shaped component. 3. A core having a base portion and a plurality of teeth extending outward from an outer edge portion of the base portion and around which windings are wound, the first core component constituting a central portion of the base portion, A core comprising a plurality of second core components having a predetermined number of teeth and a part of the base portion in the circumferential direction other than the first core component, which are connected to each other. 4. The core according to claim 3, wherein a through hole for press-fitting a rotating shaft is provided in a central portion of the base portion, and the first core component has the through hole formed therein. The core that is characterized by being. 5. The core according to any one of claims 1 to 4, wherein the core component is integrally formed with connecting means for connecting with each other. 6. The core according to claim 5, wherein the connecting means has an engaging concave portion and an engaging convex portion that engage with each other in a plane in a direction orthogonal to the axial direction. core. 7. The core according to claim 5, wherein the core component is made of a magnetic metal plate material, a core sheet is configured by a combination of the components, and the core is configured by stacking a plurality of the core sheets in an axial direction. The connecting means is a caulking portion that connects the core parts in the axial direction, and between the adjacent core sheets, the cuts of the core parts are covered by core parts of adjacent layers. A core characterized in that the core sheets of the respective layers are arranged so as to be displaced in the circumferential direction, and the core parts are connected in the axial direction by the caulking portion. 8. An armature comprising the core according to any one of claims 1 to 7. 9. A motor comprising an armature having the core according to any one of claims 1 to 7.