CN211859739U - Strip-shaped punching sheet, winding type iron core and motor - Google Patents
Strip-shaped punching sheet, winding type iron core and motor Download PDFInfo
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- CN211859739U CN211859739U CN202020275992.XU CN202020275992U CN211859739U CN 211859739 U CN211859739 U CN 211859739U CN 202020275992 U CN202020275992 U CN 202020275992U CN 211859739 U CN211859739 U CN 211859739U
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- strip
- tooth
- iron core
- yoke
- unit group
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model discloses a bar is towards piece, wound core and motor belongs to motor technical field, the bar is towards piece including yoke portion and tooth portion, tooth portion includes tooth wide portion and pole shoe portion, tooth wide portion one end is connected with yoke portion, and the other end is connected with pole shoe portion, pole shoe portion is equipped with arc surface and transverse surface on keeping away from the terminal surface of tooth wide portion one end, the arc surface bilateral symmetry is equipped with transverse surface; a winding type iron core is formed by spirally winding the strip-shaped punching sheet; a motor comprises the wound iron core, the poor parallelism of the iron core caused by the poor tolerance of the same silicon steel sheet and the material of the strip-shaped stamped steel which is balanced by a spiral structure is improved, the product quality is improved, aiming at the technical problem of low material utilization rate in the prior art, the winding iron core is beneficial to the opposite insertion arrangement of the strip-shaped stamped steel, the material width is shortened, and the silicon steel material utilization rate is improved.
Description
Technical Field
The utility model belongs to the technical field of the motor technique and specifically relates to a bar is towards piece, coiling formula iron core and motor.
Background
In the present motor design, in order to reduce silicon steel material cost, more and more designers have selected the coiling iron core, because through arranging the improvement silicon steel material utilization ratio that can furthest of arranging to inserting of bar towards the piece, avoid the material extravagant, save the cost.
However, not all the strip-shaped punching sheets can achieve the purpose of saving cost only by being arranged in an opposite insertion manner, and particularly, the stator punching sheets with the inner holes in the arc structures can reduce the effect of the opposite insertion arrangement; according to the traditional simultaneous blanking process for the stator and rotor cores, designers improve the material utilization rate by introducing multiple columns of high-speed stamping dies or cross arrangement of appearance structures, so that the higher material utilization rate is required, and the stricter requirements are provided for the structural design of strip-shaped stamping sheets.
In the motor manufacturing, in order to guarantee the insulating property of the stator core in the motor, an insulating framework is generally arranged on the stator core, the insulating framework is directly bonded on the core in the traditional mode at present, and the method is difficult to operate and low in production efficiency. With the development of the technology, some specific cases also appear at present, and a fixing hole is designed to penetrate through a stator core and used for fixing an insulating framework, however, the penetrating arrangement of the fixing hole can affect a magnetic circuit, and the performance of the motor is reduced.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
To the technical problem that material utilization is low among the prior art, the utility model provides a bar is towards piece, coiling formula iron core and motor, can improve material utilization.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model provides a bar is towards piece, including more than one yoke portion of interconnect, and with the tooth portion that yoke portion corresponds, tooth portion includes tooth wide portion and pole shoe portion, tooth wide portion one end is connected with yoke portion, the tooth wide portion other end is connected with pole shoe portion, pole shoe portion is equipped with arc surface and transverse plane on keeping away from the terminal surface of tooth wide portion one end, the arc surface bilateral symmetry is equipped with transverse plane.
Optionally, the yoke is provided with more than 1 hole.
Optionally, the minimum distance between the hole and the side of the yoke part far away from the wide part of the tooth is d, and d is more than or equal to 0.5 mm.
Optionally, the center of the hole is located on an extension line of a tooth part bisector corresponding to the yoke part.
Optionally, a rivet is arranged on the tooth portion, and the minimum distance between the rivet and the yoke portion is n, wherein n is greater than or equal to 0 and less than or equal to 6 mm.
Optionally, the yoke has a width m of 2mm to 8 mm.
The wound iron core comprises the strip-shaped punching sheet, wherein the strip-shaped punching sheet is spirally wound into a unit, more than one unit is overlapped and combined to form the wound iron core, and circles formed by arc surfaces of all tooth parts of the unit are concentric.
Optionally, the wound core includes a first unit group, a second unit group, and a third unit group, which are formed by overlapping and combining more than one unit, the first unit group, the second unit group, and the third unit group are sequentially overlapped and combined to form the wound core, and the strip-shaped punching sheets of the first unit group and the third unit group are both provided with holes.
Optionally, the thicknesses a of the first set of cells and the third set of cells are equal, and the thickness a is 1mm to 10 mm.
An electric machine comprising a wound core as described above.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a bar is towards piece, coiling formula iron core and motor has the economic nature, pole boots portion is kept away from and is equipped with arc surface and horizontal face on the terminal surface of wide portion one end of tooth, the arc surface bilateral symmetry is equipped with horizontal face, is favorable to the bar to be arranged towards the piece to inserting, shortens the material width, improves silicon steel material utilization.
(2) The strip-shaped punching sheet, the winding-type iron core and the motor of the utility model improve the working efficiency, the holes are added on the yoke part, and compared with the traditional bonding process, the hole positioning is adopted, the precision is higher, and the production speed is faster; the holes are arranged on the yoke part, so that the influence of the holes on a magnetic circuit can be reduced; after the strip-shaped punching sheet is wound into the iron core, the hole is additionally formed in the yoke part, so that the insulating framework can be conveniently installed on the end face of the iron core.
(3) The utility model discloses a bar is towards piece, coiling formula iron core and motor, has improved product quality, and in the process of bar towards piece spiral coiling for cylindric, the yoke portion of bar towards piece can stretch and compression deformation, through the setting of minimum distance d, can effectively avoid the hole to warp to guarantee the size and the position accuracy of hole; the wound iron core formed by spirally winding the strip-shaped stamped steel can balance the poor parallelism of the iron core caused by the material of the strip-shaped stamped steel, namely the silicon steel sheet and plate difference and the out-of-tolerance through a spiral structure; the inner circles of the wound iron cores are concentric, so that the balance of the air information of the stator and the rotor can be ensured, the vibration of the motor is reduced, and the noise is reduced.
Drawings
Fig. 1 is a schematic view of a strip-shaped punching sheet structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the opposite insertion arrangement of the strip-shaped punching sheets in the embodiment of the present invention;
fig. 3 is a schematic winding diagram of a strip-shaped punching sheet according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a perforated unit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a wound core according to an embodiment of the present invention.
The reference numbers illustrate: 1. a yoke portion; 11. an aperture; 2. a tooth portion; 21. a tooth wide portion; 22. a pole shoe portion; 23. a circular arc surface; 24. a transverse plane; 25. riveting; m, yoke width; n, the minimum distance between the rivet and the yoke part; a. the thickness of the first or third set of cells; d. the aperture is a minimum distance from the yoke away from the side of the wide portion of the tooth.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.
Example 1
The strip-shaped punching sheet comprises more than one yoke part 1 and tooth parts 2 corresponding to the yoke parts 1, and is characterized in that each tooth part 2 comprises a tooth wide part 21 and a pole shoe part 22, one end of the tooth wide part 21 is connected with the yoke part 1, the other end of the tooth wide part 21 is connected with the pole shoe part 22, an arc surface 23 and a transverse surface 24 are arranged on the end face, far away from one end of the tooth wide part 21, of the pole shoe part 22, and the transverse surfaces 24 are symmetrically arranged on two sides of the arc surface 23.
The pole shoe portion 22 is equipped with arc surface 23 and horizontal face 24 on keeping away from the terminal surface of tooth wide portion 21 one end, the symmetry in arc surface 23 both sides is equipped with horizontal face 24, horizontal face is about tooth portion central line bilateral symmetry, just horizontal face is mutually perpendicular with tooth portion central line, is favorable to the bar towards the piece to inserting to be arranged, shortens material width, improves silicon steel material utilization ratio.
Example 2
As shown in fig. 1, the strip-shaped stamped piece of this embodiment is further improved on the basis of the technical solution of embodiment 1, and the yoke portion 1 is provided with more than 1 hole 11. The holes 11 are added on the yoke part 1, and compared with the traditional bonding process, the holes 11 are used for positioning, so that the precision is higher, and the production speed is higher; placing the holes 11 in the yoke 1 also reduces the effect of the holes 11 on the magnetic circuit; after the strip-shaped punching sheet is wound into the iron core, the hole 11 is additionally formed in the yoke part 1, so that an insulating framework can be conveniently installed on the end face of the iron core.
Example 3
As shown in FIG. 1, the strip-shaped punching sheet of the embodiment is further improved on the basis of any one of the technical solutions of the embodiments 1 and 2, wherein the minimum distance between the hole 11 and the side of the yoke portion 1 away from the tooth wide portion 21 is d, d is greater than or equal to 0.5mm, and d can take the values of 0.5mm, 0.6mm, 0.7mm, 0.55mm, 0.63mm and the like. In the winding process of the strip-shaped punching sheet, the yoke part 1 of the strip-shaped punching sheet can be stretched and compressed, and the deformation of the hole 11 can be effectively avoided through the arrangement of the minimum distance d so as to ensure the size and the position precision of the hole 11.
Example 4
As shown in fig. 1, the strip-shaped punching sheet of this embodiment is further improved on the basis of any one of embodiments 1, 2, and 3, and a center of the hole 11 is located on an extension line of a center line of the tooth portion 2 corresponding to the yoke portion. The magnetic induction lines on the extension lines of the central lines of the corresponding teeth 2 on the yoke 1 are minimum, and the influence on the magnetic circuit is minimum.
Example 5
As shown in fig. 1, the strip-shaped punching sheet of this embodiment is further improved on the basis of any one of embodiments 1, 2, 3, and 4, wherein the center of the hole 11 is located on an extension of a bisector of the tooth portion 2 corresponding to the yoke portion, and the bisector of the tooth portion 2 can be a trisection, a sextant, or a dodecatant. The equal-interval distribution of the holes 11 is beneficial to uniform stress of the strip-shaped punching sheet in the spiral winding process, and the circularity is better; and the equal interval distribution of the holes 11 accords with the processing technology of a stamping die, so that the production is convenient.
Example 6
As shown in fig. 1, the strip-shaped stamped sheet of this embodiment is further improved on the basis of any one of the technical solutions of embodiments 1, 2, 3, 4, and 5, a rivet 25 is arranged on the tooth portion 1, a minimum distance between the rivet 25 and the yoke portion 1 is n, n is greater than or equal to 0 and less than or equal to 6mm, and n can take values of 0mm, 1mm, 0.3mm, 3mm, 5mm, or 6mm, and the like, in specific applications. The riveting buckle 25 can be square, after the strip-shaped stamped steel is formed by winding the iron core, the strip-shaped stamped steel can be directly riveted through the square riveting buckle 25, a welding procedure is omitted, and the production efficiency is improved; the square rivet 25 is reasonably arranged, so that the riveting force of the wound iron core can be ensured, and the strip-shaped punching sheet is prevented from warping; and the square rivet 25 and other components can be prevented from interfering with each other in the winding process of the strip-shaped stamped steel, so that the winding iron core forming is not influenced.
Example 7
As shown in fig. 1, the strip-shaped punching sheet of the embodiment is further improved on the basis of any one of the technical solutions of embodiments 1 to 6, wherein the yoke portion 1 has a certain width m of 2mm to 8mm, and in specific application, m can take values of 2mm, 2.2mm, 2.5mm, 4mm, 6mm or 8mm, and the like. The too wide width of the yoke part 1 affects the winding forming; the yoke part 1 is too narrow in width to cause too high magnetic density of the yoke part, and the performance of the motor is affected.
Example 8
As shown in fig. 1, the strip-shaped punching sheet of the present embodiment is further improved from any one of embodiments 1 to 7, and the circular arc surfaces 23 of the tooth portions 2 corresponding to the one or more yoke portions 1 have the same radius. The radiuses of the arc surfaces 23 on all the tooth parts 2 on the same strip-shaped punching sheet are equal, so that the winding forming is facilitated, and the coaxiality of the inner circle and the outer circle of the wound iron core is guaranteed.
Example 9
As shown in fig. 3, 4, and 5, the winding core of this embodiment is further improved based on any of the technical solutions of embodiments 1 to 8, the strip-shaped stamped steel is spirally wound into one unit, and more than one unit is overlapped and combined to form the winding core. The wound iron core formed by spirally winding the strip-shaped stamped steel can balance poor iron core parallelism caused by the material of the strip-shaped stamped steel, namely the silicon steel sheet same-plate difference and out-of-tolerance, through a spiral structure, and the product quality is improved.
Example 10
As shown in fig. 3, 4 and 5, the wound core of the present embodiment is further improved from the embodiment 9 in that the circles formed by the arc surfaces 23 of the respective tooth portions of the unit are concentric. The inner circles of the wound iron cores are concentric, so that the balance of the air information of the stator and the rotor can be ensured, the vibration of the motor is reduced, and the noise is reduced.
Example 11
As shown in fig. 4 and 5, a wound core according to this embodiment is further improved from any one of embodiments 9 and 10, in which the wound core includes a first unit group, a second unit group, and a third unit group, which are formed by overlapping and combining one or more units, the first unit group, the second unit group, and the third unit group are sequentially overlapped and combined to form the wound core, and strip-shaped punching sheets of the first unit group and the third unit group are respectively provided with a hole 11. The first unit group and the third unit group with holes 11 and the second unit group without holes 11 are arranged, so that the influence of the holes 11 on the magnetic circuit of the wound iron core can be further reduced.
Example 12
As shown in fig. 5, a winding core according to this embodiment is further improved based on any of the technical solutions of embodiments 9, 10, and 11, wherein the thicknesses a of the first unit group and the third unit group are equal, the thickness is 1mm to 10mm, and in specific applications, the thicknesses may be 1mm, 1.2mm, 1.5mm, 5mm, 8mm, 9mm, or 10 mm. The thicknesses a of the first unit group and the third unit group are equal, and the balance of the iron core and the control of the production size are facilitated.
Example 13
As shown in fig. 5, the motor of the present embodiment is further improved based on any one of the technical solutions of embodiments 9, 10, 11, and 12, and includes the above-described wound core. By adopting the winding type iron core to construct the motor, the silicon steel material cost of the motor can be reduced, and the production efficiency and the motor performance are improved.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a bar is towards piece, including more than one yoke portion of interconnect, and with the tooth portion that yoke portion corresponds, its characterized in that, tooth portion includes tooth wide portion and pole shoe portion, tooth wide portion one end is connected with yoke portion, the tooth wide portion other end is connected with pole shoe portion, pole shoe portion is equipped with arc surface and transverse plane on keeping away from the terminal surface of tooth wide portion one end, the arc surface bilateral symmetry is equipped with transverse plane.
2. The strip-shaped punching sheet according to claim 1, wherein more than 1 hole is formed in the yoke portion.
3. Strip punch according to claim 2, characterised in that the minimum distance of the hole from the yoke part to the side remote from the wide part of the tooth is d, d ≥ 0.5 mm.
4. The strip punch as claimed in claim 2, wherein the center of the hole is located on an extension of a tooth bisector corresponding to the yoke portion.
5. The strip-shaped stamped sheet according to claim 1, wherein a rivet is arranged on the tooth part, and the rivet has a minimum distance n from the yoke part, wherein n is greater than or equal to 0 and less than or equal to 6 mm.
6. Strip punch according to claim 1, characterized in that the width m of the yoke is 2-8 mm.
7. A coiled iron core, comprising the strip-shaped stamped steel of any one of claims 1 to 6, wherein the strip-shaped stamped steel is spirally coiled into a unit, more than one unit is overlapped and combined to form the coiled iron core, and circles formed by arc surfaces of tooth parts of the units are concentric.
8. A coiled iron core according to claim 7, wherein the coiled iron core comprises a first unit group, a second unit group and a third unit group, which are formed by overlapping and combining more than one unit, the first unit group, the second unit group and the third unit group are sequentially overlapped and combined, and holes are arranged on strip-shaped punching sheets of the first unit group and the third unit group.
9. A coiled core according to claim 8, wherein the thickness a of the first and third sets of cells is equal, the thickness a being 1-10 mm.
10. An electric machine comprising a wound core according to any one of claims 7 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275992.XU CN211859739U (en) | 2020-03-09 | 2020-03-09 | Strip-shaped punching sheet, winding type iron core and motor |
| PCT/CN2020/119456 WO2021179586A1 (en) | 2020-03-09 | 2020-09-30 | Strip-shaped sheet, winding iron core, and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275992.XU CN211859739U (en) | 2020-03-09 | 2020-03-09 | Strip-shaped punching sheet, winding type iron core and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211859739U true CN211859739U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020275992.XU Active CN211859739U (en) | 2020-03-09 | 2020-03-09 | Strip-shaped punching sheet, winding type iron core and motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN211859739U (en) |
| WO (1) | WO2021179586A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765246A (en) * | 2021-09-26 | 2021-12-07 | 浙江实日机电科技有限公司 | Production process of iron core punching strip |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114301244B (en) * | 2021-12-08 | 2023-04-25 | 江苏金光电机科技有限公司 | Motor iron core punching sheet and manufacturing process thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100399673C (en) * | 2003-09-25 | 2008-07-02 | 乐金电子(天津)电器有限公司 | Core for dynamo and mfg method thereof |
| JP4884418B2 (en) * | 2008-04-04 | 2012-02-29 | 三菱電機株式会社 | Manufacturing method of split stator core |
| CN202455169U (en) * | 2011-12-31 | 2012-09-26 | 宁波杭州湾新区北斗电机有限公司 | Motor iron core punching sheet |
| CN203933175U (en) * | 2014-06-13 | 2014-11-05 | 重庆瑜欣平瑞电子有限公司 | The coiled iron core of bracelet riveting knot structure |
| CN209545268U (en) * | 2018-10-23 | 2019-10-25 | 卧龙电气集团股份有限公司 | Coiled iron core |
| CN111293800A (en) * | 2020-03-09 | 2020-06-16 | 卧龙电气驱动集团股份有限公司 | Punching sheet, winding type iron core and motor |
| CN211629941U (en) * | 2020-03-09 | 2020-10-02 | 卧龙电气驱动集团股份有限公司 | Punching sheet, winding type iron core and motor |
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2020
- 2020-03-09 CN CN202020275992.XU patent/CN211859739U/en active Active
- 2020-09-30 WO PCT/CN2020/119456 patent/WO2021179586A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765246A (en) * | 2021-09-26 | 2021-12-07 | 浙江实日机电科技有限公司 | Production process of iron core punching strip |
| CN113765246B (en) * | 2021-09-26 | 2022-08-26 | 浙江实日机电科技有限公司 | Production process of iron core punching strip |
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| WO2021179586A1 (en) | 2021-09-16 |
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