JP2003009435A - Core and winding method thereof - Google Patents

Abstract

(57) [Problem] To provide a core that can be accurately formed into a circular shape with a simple configuration. A core 1 includes a ring core 10 in which circular first ring core sheets 11 and second ring core sheets 12 having different areas are alternately laminated, a T-shaped first split core sheet 21 and a second T-shaped core sheet 21 having different areas. And a plurality of divided cores 20 in which divided core sheets 22 are alternately stacked. The slits 30 for fitting the split cores 20 are formed at equal angular intervals in the ring core 10. On the other hand, a fitting portion 40 that fits with the slit 30 is formed in the split core 20. For this reason, the split core 20
The core 1 can be manufactured only by fitting the fitting portion 40 of the above into the slit 30 of the ring core 10. Moreover,
Since the slits 30 of the ring core 10 are formed at equal angular intervals, the core 1 can be formed into an accurate circular shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core and a winding method for the core.

[0002]

2. Description of the Related Art Conventionally, various cores and winding methods for the cores have been proposed. Specifically, for example, Japanese Patent Laid-Open No. 7-222383 discloses a method of manufacturing a stator and a split laminated core. According to this publication, a split laminated core is manufactured into a T-shaped core in order to improve the space factor, and the T-shaped core is laminated and then wound. Finally, a plurality of stacked T-shaped cores are assembled together to manufacture a stator.

[0003]

However, in the manufacturing method of the above publication, since it is necessary to form a winding for each T-shaped core, a winding machine or man-hour for teeth is required for one motor. Become. In addition, since the winding is made of a single T-shaped core, the terminal processing becomes complicated. Furthermore, since the winding process and the core assembling process are separate, there is a high possibility that the winding coating will be damaged during the process movement and during the core assembling process. At the same time, since it is necessary to assemble the stacked T-shaped cores to manufacture a circular stator, it is difficult to manufacture an accurate cylindrical shape.

The present invention has been made by paying attention to such a problem, and its purpose is to provide a space factor of a winding and a core which can be accurately formed into a circular shape with a simple structure. It is an object of the present invention to provide a core winding method capable of improving the winding speed and shortening the winding processing time.

[0005]

In order to achieve the above object, the invention according to claim 1 comprises a ring core in which a plurality of ring core sheets are laminated and a split core in which a plurality of split core sheets are laminated. In the core, the ring core is formed by stacking circular first ring core sheets and second ring core sheets having different areas, and the split cores are T-shaped first split core sheets and second split core sheets having different areas. And were laminated.

According to a second aspect of the invention, in the core according to the first aspect, slits are formed in the ring core at equal angular intervals, and the split core is fitted with a fitting portion. Was formed.

In the invention according to claim 3, in the core according to claim 1 or 2, the slit width of the first slit formed in the first ring core sheet and the slit width formed in the second ring core sheet. The slit width of the two slits is different from the first slit formed on the first split core sheet.
The width of the fitting portion and the second formed on the second split core sheet.
The width of the fitting part is different.

According to a fourth aspect of the invention, in the core according to the second or third aspect, the fitting portion of the split core is slidable with respect to the slit of the ring core.

According to a fifth aspect of the present invention, in the core winding method according to any one of the first to fourth aspects, the fitting portion of the split core is fitted into the slit of the ring core. In this state, the winding is wound around the tooth portion of the split core.

According to a sixth aspect of the invention, in the core winding method according to the fifth aspect, the winding is wound with the fitting portion of the split core fitted in the slit of the ring core. Only the split core is pulled out from the slit of the ring core by a predetermined amount, and the winding is wound around the tooth portion of the split core.

According to a seventh aspect of the invention, in the core winding method according to the fifth aspect, the winding is wound with the fitting portion of the split core pulled out from the slit of the ring core by a predetermined amount. Only the split core to be rotated is fitted into the slit of the ring core, and the winding is wound around the tooth portion of the split core.

According to an eighth aspect of the invention, in the method of winding a core according to any one of the fifth to seventh aspects, the winding is wound around the tooth portions of the plurality of split cores at the same time. According to the invention of claim 9, in the winding method of the core according to any one of claims 5 to 8, after winding the winding wire around the tooth portion of the split core, a hook is provided via a hook. , Move to the teeth section of another split core.

(Operation) According to the invention described in claim 1,
The area of the circular first ring core sheet and the area of the circular second ring core sheet, and the area of the T-shaped first split core sheet and the T-shaped second split core sheet are different.
Therefore, the contact area between the split core and the ring core is increased, and the magnetic resistance is reduced.

According to the second aspect of the present invention, the split core includes slits of the ring core formed at equal angular intervals,
It is fixed with the fitting part of the split core. According to the third aspect of the present invention, when the first slit and the first fitting portion are fitted and the second slit and the second fitting portion are fitted, the contact area between the ring core and the split core is reduced. growing. Therefore, the split core is fixed to the ring core.

According to the invention described in claim 4, when the split core is slid with respect to the slit of the ring core, the winding can be easily wound around the split core. According to the invention described in any one of claims 5 to 7, the number of parts at the time of winding is suppressed. Moreover, when the winding is wound around the tooth portion of the split core, adjacent split cores do not interfere.

According to the invention described in claim 8, since the winding can be wound around the teeth portion of the plurality of split cores, the winding processing time can be shortened. According to the invention described in claim 9, the winding can be sequentially wound around each tooth portion without performing the terminal treatment of the winding.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the core 1 is composed of a ring core 10 and a T-shaped split core 20. In the ring core 10, circular first ring core sheets 11 having different areas and second ring core sheets 12 having the same shape are alternately laminated. In this ring core 10, slits 30 for fitting with the split cores 20 are formed at equal angular intervals. Specifically, the first ring core sheet 11 is formed with the first slits 31 in a rectangular shape at equal angular intervals.
The second slits 32 are formed in a rectangular shape at equal angular intervals. The second slit 32 is the first slit 31.
It is formed in a larger rectangular shape. As a result, the ring core 10 has the ring core sheet 11,
Slits 30 having different slit widths for each 12 are formed.

On the other hand, the split core 20 is formed by alternately stacking T-shaped first split core sheets 21 having different areas and second split core sheets 22 having the same shape. The split core 20 includes a fitting portion 40 that fits into the slit 30 of the ring core 10 and a tooth portion 50 that winds a winding wire. Specifically, a first ring having a first fitting portion 41 that fits with the first slit 31 of the first ring core sheet 11
It is composed of a split core sheet 21 and a second split core sheet 22 having a second fitting portion 42 that fits into the second slit 32 of the second ring core sheet. That is, the width of the first fitting portion 41 is formed substantially the same as the first slit 31, and the width of the second fitting portion 42 is formed substantially the same as the second slit 32. As a result, a different fitting portion 40 is formed on the split core sheet 20 for each split core sheet 21, 22.

When the fitting portions 40 of the split core 20 are fitted into all the slits 30 of the ring core 10,
The fitting portion 40 of the split core 20 serves as the core 1 that is slidable with respect to the slit 30 of the ring core 10.

Next, a method for winding the winding wire 60 around the core 1 thus constructed will be described with reference to the drawings. [First Winding Method] As shown in FIG. 2A, the fitting portions 40 of all the split cores 20 have slits 3 of the ring core 10.
As shown in FIG. 2B, only the split core 20 around which the winding wire 60 is wound is pulled out from the slit 30 of the ring core 10 by a predetermined amount from the state of being fitted to 0. Then, the winding wire 60 is wound around the tooth portion 50 of the extracted split core 20. At this time, the fitting portions 40 of the adjacent split cores 20 are
Since it is fitted in the slit 30 of the ring core 10,
The adjacent split cores 20 do not get in the way. In other words, since the fitting portions 40 of the adjacent split cores 20 are recessed in the slits 30 of the ring core 10, the adjacent split cores 20 do not get in the way. Therefore, the winding 60
Can be easily wound. After the winding of the winding wire 60 is completed, the fitting portion 4 of the split core 20 around which the winding wire 60 is wound.
0 is fitted into the slit 30 of the ring core 10. Then, the winding 60 is connected to the other split core 2 via the hook 70.
Move to 0. The end of the winding wire 60 is connected to a commutator hook or a terminal. In this way, when the winding wire 60 is wound around the tooth portions 50 of all the split cores 20, the rotor or the stator is completed. [Second winding method] On the other hand, contrary to this method, as shown in FIG.
As shown in FIG. 3, from the state where the fitting portions 40 of all the split cores 20 are pulled out from the slits 30 of the ring core 10 by a predetermined amount, as shown in FIG. Only the fitting portion 40 of is fitted into the slit 30 of the ring core 10. In other words, only the fitting portion 40 of the split core 20 around which the winding wire 60 is wound is immersed in the slit 30 of the ring core 10. Then, the winding wire 60 is wound around the tooth portion 50 in which the fitting portion 40 of the split core 20 and the slit 30 of the ring core 10 are fitted. At this time, since the adjacent split cores 20 are pulled out from the ring core 10 by a predetermined amount, the adjacent split cores 20 do not interfere. Therefore, the winding wire 60 can be easily wound. After that, as with the first winding method, the winding 60
Process.

After winding the winding wire 60 around the tooth portions 50 of all the split cores 20, the fitting portions 40 of the split cores 20 are connected to the slits 3 of the ring core 10 as shown in FIG.
In the state of being fitted to 0, the fitting portion 40 of the split core 20 and the slit 30 of the ring core 10 are crimped to form the crimp portion 80.

As described above in detail, according to this embodiment, the following actions and effects can be obtained. (1) The core 1 includes a ring core 10 in which circular first ring core sheets 11 and second ring core sheets 12 having different areas are alternately stacked, and a T-shaped first split core sheet 21 and second split having different areas. It is composed of a plurality of split cores 20 in which core sheets 22 are alternately laminated. Then, the ring core 10 is formed with slits 30 for fitting the split cores 20 at equal angular intervals. On the other hand, the split core 20 is formed with a fitting portion 40 that fits into the slit 30. Therefore, the core 1 can be manufactured only by fitting the fitting portion 40 of the split core 20 into the slit 30 of the ring core 10. Moreover, since the slits 30 of the ring core 10 are formed at equal angular intervals, the core 1 can be formed into an accurate circular shape. Therefore, the core 1 can be formed into an accurate circular shape with a simple structure.

(2) In addition, the slit 30 of the ring core 10 is composed of a first slit 31 and a second slit 32. On the other hand, the fitting portion 40 of the split core 20 has the first
It is composed of a fitting portion 41 and a second fitting portion 42. Therefore, when the fitting portion 40 of the split core 20 is fitted into the slit 30 of the ring core 10, the contact area becomes large. Therefore, the split core 20 is securely fixed to the ring core 10. Therefore, it is possible to prevent the split core 20 from falling off the ring core 10.

(3) Moreover, the fitting portion 40 of the split core 20
When is fitted in the slit 30 of the ring core 10,
Since the contact area is large, the magnetic resistance is also reduced. As a result, if the core 1 configured as described above is applied to a motor, a high output motor can be provided.

(4) Furthermore, when the winding wire 60 is wound around the tooth portion 50 of the split core 20, the split core 20 is wound in a state where the split core 20 is pulled out from the ring core 10 by a predetermined amount, that is, in the state of one component of the core 1. The wire 60 can be easily wound. Therefore, the number of parts at the time of winding is suppressed.

(5) Moreover, when the winding wire 60 is wound around the tooth portion 50 of the split core 20, the split cores 20 adjacent to each other are wound.
The fitting portion 40 of the ring core 10 is immersed in the slit 30 of the ring core 10 (first winding method) or the slit 30 of the ring core 10.
A predetermined amount (the second winding method). Therefore, the adjacent split cores 20 do not get in the way. Therefore, the space factor of the winding wire 60 can be improved and the winding processing time can be shortened.

(6) In addition, at the time of winding, for example, only a pair of opposing split cores 20 are pulled out from the ring core 10 by a predetermined amount (first winding method), or only a pair of opposing split cores 20 are ring cores. 10 to fit (second
It is also possible to wind a pair of split cores 20 simultaneously (see FIG. 2B and FIG. 3B). Therefore, by doing so, the winding processing time can be further shortened.

(7) After the winding wire 60 is wound around the tooth portion 50, it moves to another tooth portion 50 via the hook 70. Therefore, each tooth portion 50 can be sequentially wound without performing the end treatment of the winding wire 60.
Therefore, the winding process time can be shortened and the winding process can be simplified.

(8) Since the fitting portion 40 of the split core 20 is configured to slide with respect to the slit 30 of the ring core 10, the space between the split cores 20 adjacent to each other, specifically, the tooth portion shown in FIG. Protrusion 23 extending from the tip of 50
In between, the so-called tooth slit 90 can be made narrow. Therefore, the cogging torque is reduced. Therefore, by applying the core 1 configured as described above to a motor, it is possible to provide a motor that smoothly rotates.

(9) After winding the winding wire 60 around the tooth portions 50 of all the split cores 20, as shown in FIG. 4, the fitting portions 40 of the split cores 20 and the slits 3 of the ring core 10 are formed.
The portion 0 is crimped to form the crimped portion 80. That is, the split core 20 is prevented from coming off. As a result, even if the core 1 is used as the rotor core, the split core 20
Can be reliably prevented from falling off the ring core 10.

The present embodiment can be modified and embodied as follows. -In the said embodiment, the ring core 1 which laminated | stacked the 1st ring core sheet 11 and the 2nd ring core sheet 12 by turns.
0 and the split core 20 in which the first split core sheet 21 and the second split core sheet 22 are alternately laminated, but the first ring core sheet 11 and the first ring core sheet 11 are provided every predetermined number of sheets (for example, every two sheets). The second ring core sheet 12 is laminated,
Similarly, the first split core sheet 21 and the second split core sheet 22 may be laminated every predetermined number of sheets (for example, every two sheets).

The winding 60 may be wound around the tooth portion 50 of the split core 20 while the fitting portion 40 of the split core 20 is fitted in the slit 30 of the ring core 10. -Instead of the structure which crimps between the fitting part 40 of the split core 20 and the slit 30 of the ring core 10, and forms the crimping part 80, you may laser-weld the same position. That is,
It suffices if the split core 20 is prevented from coming off.

The end of the fitting portion 40 of the split core 20 may be tapered so as to facilitate fitting into the slit 30 of the ring core 10. -At the time of winding, winding 60 is performed simultaneously for a plurality of split cores 20
May be wound.

[0034]

Since the present invention is constructed as described above, it has the following effects. According to the invention described in any one of claims 1 to 4, the core can be formed into an accurate circular shape with a simple configuration.

According to the invention described in any one of claims 5 to 9, the space factor of the winding can be improved and the winding processing time can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a ring core and a split core.

FIG. 2A is a perspective view showing a state where the split core is fitted to the ring core. (B) A perspective view showing a state in which a predetermined split core is pulled out from a ring core by a predetermined amount and a winding is wound.

FIG. 3A is a perspective view showing a state where the split core is pulled out from the ring core by a predetermined amount. (B) A perspective view showing a state in which a predetermined split core is fitted to a ring core and a winding is wound.

FIG. 4 is a plan view showing a state in which the fitting portion of the split core and the slit of the ring core are caulked.

[Explanation of symbols]

1 ... Core, 10 ... Ring core, 11 ... 1st ring core sheet, 12 ... 2nd ring core sheet, 20 ... Split core,
21 ... 1st split core sheet, 22 ... 2nd split core sheet, 30 ... Slit, 31 ... 1st slit, 32 ... 2nd
Slits, 40 ... Fitting portion, 41 ... First fitting portion, 42 ... Second fitting portion, 50 ... Teeth portion, 60 ... Winding wire, 70 ... Hook.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiro Toyama             Asumo Corporation, 390 Umeda, Kosai City, Shizuoka Prefecture             In the company F-term (reference) 5H002 AA07 AB06 AE01 AE08                 5H603 AA09 BB01 BB13 CA01 CC11                       CC17 CD21 CE01 EE30                 5H615 AA01 BB01 BB14 BB16 PP01                       PP10 PP11 SS03 SS05 SS11

Claims (9)

[Claims] 1. A core comprising a ring core in which a plurality of ring core sheets are stacked and a split core in which a plurality of split core sheets are stacked, wherein the ring cores are circular first ring core sheets and second ring core sheets having different areas. And a first split core sheet and a second split core sheet each having a T-shape having a different area. 2. The core according to claim 1, wherein the ring core is formed with slits at equal angular intervals, and the split core is formed with a fitting portion that fits with the slit. 3. The core according to claim 1, wherein the slit width of the first slit formed in the first ring core sheet and the slit width of the second slit formed in the second ring core sheet are Differently, the core in which the width of the first fitting portion formed on the first split core sheet and the width of the second fitting portion formed on the second split core sheet are different. 4. The core according to claim 2 or 3, wherein the fitting portion of the split core is slidable with respect to the slit of the ring core. 5. The winding method for a core according to claim 1, wherein the winding is wound in a state where the fitting portion of the split core is fitted in the slit of the ring core. A winding method for the core wound around the teeth of the split core. 6. The method of winding a core according to claim 5, wherein only a predetermined amount of the split core around which the winding is wound is wound with the fitting portion of the split core fitted in the slit of the ring core. A core winding method in which the winding is pulled out from the slit of the ring core and wound around the teeth of the split core. 7. The core winding method according to claim 5, wherein only the split core around which the winding is wound is wound with the fitting portion of the split core pulled out from the slit of the ring core by a predetermined amount. The core winding method in which the winding is wound around the teeth portion of the split core by being fitted in the slit of. 8. The core winding method according to claim 5, wherein the winding is wound around the tooth portions of the plurality of split cores at the same time. 9. The core winding method according to claim 5, wherein after winding the winding around the tooth portion of the split core, another split is performed via a hook. A method of winding the core that moves to the teeth portion of the core.