WO2021179586A1 - 一种条形冲片、卷绕式铁芯和电机 - Google Patents

一种条形冲片、卷绕式铁芯和电机 Download PDF

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Publication number
WO2021179586A1
WO2021179586A1 PCT/CN2020/119456 CN2020119456W WO2021179586A1 WO 2021179586 A1 WO2021179586 A1 WO 2021179586A1 CN 2020119456 W CN2020119456 W CN 2020119456W WO 2021179586 A1 WO2021179586 A1 WO 2021179586A1
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WIPO (PCT)
Prior art keywords
strip
yoke
tooth
iron core
unit group
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PCT/CN2020/119456
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English (en)
French (fr)
Inventor
赵新超
李贻伟
孙祥善
张衍军
杜洪彪
Original Assignee
卧龙电气驱动集团股份有限公司
卧龙电气（济南）电机有限公司
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Application filed by 卧龙电气驱动集团股份有限公司, 卧龙电气（济南）电机有限公司 filed Critical 卧龙电气驱动集团股份有限公司
Publication of WO2021179586A1 publication Critical patent/WO2021179586A1/zh

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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

Definitions

  • the utility model relates to the technical field of motors, and more specifically to a strip-shaped punching sheet, a winding iron core and a motor.
  • strip punches can achieve cost savings as long as they are inserted and arranged, especially for stator punches with an arc structure in the inner hole, which will reduce the effect of the insertion and arrangement; traditional stators and rotors
  • stator punches with an arc structure in the inner hole, which will reduce the effect of the insertion and arrangement; traditional stators and rotors
  • the iron core punching process at the same time, designers are introducing multiple rows of high-speed punching dies or cross-arrangement of the shape structure to improve the material utilization rate. Therefore, if you want to achieve a higher material utilization rate, the structure design of this pair of strip punches Put forward more stringent requirements.
  • an insulation skeleton is generally installed on the stator core.
  • the current traditional method is to directly bond the insulation skeleton to the core. This method is difficult to operate and produce low efficiency.
  • the fixing holes are designed to penetrate the stator core to fix the insulating frame. However, the penetration of the fixing holes will affect the magnetic circuit and reduce the performance of the motor.
  • the utility model provides a strip-shaped punching sheet, a wound iron core and a motor, which can improve the material utilization rate.
  • a strip-shaped punching piece comprising more than one yoke part connected to each other and a tooth part corresponding to the yoke part.
  • the tooth part includes a tooth width part and a pole shoe part. One end of the tooth width part is connected to the yoke part. In connection, the other end of the tooth width part is connected with the pole shoe part, and the end surface of the pole shoe part away from the end of the tooth width part is provided with a circular arc surface and a transverse surface, and both sides of the circular arc surface are symmetrically provided with a transverse surface.
  • more than one hole is opened on the yoke.
  • the minimum distance between the hole and the side of the yoke away from the tooth width is d, d ⁇ 0.5mm.
  • the center of the hole is located on the extension line of the tooth bisector corresponding to the yoke.
  • a riveting button is provided on the tooth portion, and the minimum distance between the riveting button and the yoke portion is n, 0 ⁇ n ⁇ 6mm.
  • the yoke has a certain width m of 2mm-8mm.
  • a wound iron core comprising the strip punches described above, the strip punches are spirally wound into a unit, and more than one unit is overlapped and combined to form the wound iron core.
  • the circles formed by the arc surfaces of the teeth of the unit are concentric.
  • the wound core includes a first unit group, a second unit group, and a third unit group formed by overlapping and combining more than one unit, the first unit group, the second unit group, and the The third unit group is sequentially overlapped and combined to form the wound core, and the strip punches of the first unit group and the third unit group are both provided with holes.
  • the thickness a of the first unit group and the third unit group are equal, and the thickness a is 1 mm-10 mm.
  • a motor includes the above-mentioned wound iron core.
  • a strip-shaped punching sheet, a wound iron core and a motor of the present invention are economical.
  • the end face of the pole shoe part away from the end of the tooth width part is provided with a circular arc surface and a transverse surface.
  • the two sides of the arc surface are symmetrically provided with transverse surfaces, which is conducive to the arrangement of the strip-shaped punching pieces, shortening the material width, and improving the utilization rate of silicon steel materials.
  • the strip punch, wound core and motor of the present invention improve work efficiency, add holes in the yoke, and adopt hole positioning compared with traditional bonding processes, which has higher accuracy.
  • the production speed is faster; the hole is placed in the yoke part to reduce the influence of the hole on the magnetic circuit; after the strip punch is wound into the iron core, the additional holes on the yoke part facilitate the installation of the insulating frame on the end face of the iron core.
  • the strip punching sheet, winding core and motor of the present invention improve the product quality.
  • the yoke of the strip punching sheet will perform Tensile and compressive deformation, through the setting of the minimum distance d, hole deformation can be effectively avoided to ensure the size and position accuracy of the hole;
  • the wound iron core formed by the spiral winding of the strip punch can be balanced by the spiral structure
  • the material of the shaped punching sheet-the poor parallelism of the iron core caused by the excessive difference between the silicon steel sheet and the plate; the inner circle of the wound iron core is concentric, which can ensure the balance of the stator and rotor breath, reduce the vibration of the motor, and reduce the noise.
  • Figure 1 is a schematic diagram of the structure of a strip punching sheet according to an embodiment of the utility model
  • FIG. 2 is a schematic diagram of the arrangement of the strip-shaped punching pieces against the inserts according to the embodiment of the present invention
  • Figure 3 is a schematic diagram of the strip-shaped punching sheet winding according to an embodiment of the utility model
  • Figure 4 is a schematic diagram of the structure of a perforated unit according to an embodiment of the utility model
  • Fig. 5 is a schematic diagram of the structure of the wound iron core according to the embodiment of the utility model.
  • a strip-shaped punching piece comprising more than one yoke portion 1 connected to each other, and a tooth portion 2 corresponding to the yoke portion 1, wherein the tooth portion 2 includes a tooth width portion 21 and a pole shoe portion 22
  • the tooth portion 2 includes a tooth width portion 21 and a pole shoe portion 22
  • One end of the tooth width portion 21 is connected to the yoke portion 1
  • the other end of the tooth width portion 21 is connected to a pole shoe portion 22
  • the end surface of the pole shoe portion 22 away from the end of the tooth width portion 21 is provided with a circular arc surface 23
  • the transverse surface 24, the arc surface 23 is provided with transverse surfaces 24 symmetrically on both sides.
  • An arc surface 23 and a transverse surface 24 are provided on the end surface of the pole shoe portion 22 away from the end of the tooth width portion 21.
  • the arc surface 23 is provided with a transverse surface 24 symmetrically on both sides, and the transverse surface is symmetrical about the center line of the tooth portion.
  • the transverse surface is perpendicular to the center line of the tooth portion, which is beneficial to the arrangement of the strip-shaped punching pieces, shortening the material width, and improving the utilization rate of the silicon steel material.
  • the strip punch of this embodiment is further improved on the basis of the technical solution of Embodiment 1. More than one hole 11 is opened on the yoke 1. The hole 11 is added to the yoke 1. Compared with the traditional bonding process, the hole 11 is used for positioning, which has higher accuracy and faster production speed; placing the hole 11 in the yoke 1 can also reduce the influence of the hole 11 on the magnetic circuit; After the strip-shaped punching sheet is wound into an iron core, the holes 11 added to the yoke 1 facilitate the installation of an insulating frame on the end face of the iron core.
  • the strip punch of this embodiment is further improved on the basis of any one of the technical solutions of the first and second embodiments.
  • the distance is d, d ⁇ 0.5mm, and d can take values such as 0.5mm, 0.6mm, 0.7mm, 0.55mm, 0.63mm, etc.
  • the yoke 1 of the strip punch will undergo stretching and compression deformation.
  • deformation of the hole 11 can be effectively avoided to ensure the size and position accuracy of the hole 11.
  • the strip punch of this embodiment is further improved on the basis of any of the technical solutions of the embodiments 1, 2, and 3.
  • the center of the hole 11 is located at the center of the tooth 2 corresponding to the yoke.
  • the line of magnetic induction on the extension line of the center line of the corresponding tooth 2 on the yoke 1 is the least, and the influence on the magnetic circuit is the least.
  • the strip punch of this embodiment is further improved on the basis of any of the technical solutions of the embodiments 1, 2, 3, and 4.
  • the center of the hole 11 is located at the tooth portion corresponding to the yoke.
  • the tooth 2 bisector line can be selected as a third bisector, a sixth bisector, and a twelfth bisector.
  • the equally spaced distribution of the holes 11 is beneficial to the uniform force during the spiral winding of the strip-shaped punching sheet, and the roundness is better; and the equally spaced distribution of the holes 11 conforms to the processing technology of the punching die, which is convenient for production.
  • the strip punch of this embodiment is further improved on the basis of any of the technical solutions of the embodiments 1, 2, 3, 4, and 5.
  • the tooth 1 is provided with a riveting button 25
  • the minimum distance between the riveting button 25 and the yoke 1 is n, 0 ⁇ n ⁇ 6mm.
  • n can take values such as 0mm, 1mm, 0.3mm, 3mm, 5mm or 6mm.
  • the riveting button 25 can be square.
  • the strip-shaped punching and winding iron core After the strip-shaped punching and winding iron core is formed, it can be directly riveted through the square riveting button 25, eliminating the welding process and improving production efficiency; the square riveting button 25 is reasonably set to ensure the winding The riveting force of the iron core prevents the strip-shaped punching sheet from warping; it can also avoid the interference of the square riveting button 25 with other parts during the winding process of the strip-shaped punching sheet, which affects the formation of the wound core.
  • the strip punch of this embodiment is further improved on the basis of any of the technical solutions of the embodiments 1-6.
  • the yoke 1 has a certain width m of 2mm-8mm, and the specific application When, m can take values such as 2mm, 2.2mm, 2.5mm, 4mm, 6mm or 8mm. If the width of the yoke 1 is too wide, the winding molding will be affected; if the width of the yoke 1 is too narrow, the magnetic density of the yoke will be too high, which will affect the performance of the motor.
  • the strip punch of this embodiment is further improved on the basis of any one of the technical solutions of the embodiments 1-7, and the tooth portion 2 corresponding to the one or more yoke portions 1
  • the radius of the arc surface 23 is equal.
  • the arc surfaces 23 on all the tooth portions 2 on the same strip-shaped punching piece have the same radius, which is convenient for winding and forming, and helps to ensure the inner and outer circle coaxiality of the winding iron core.
  • the wound core of this embodiment is further improved on the basis of any one of the technical solutions in the embodiments 1-8, and the strip punch is spirally wound into a unit , One or more of the units are overlapped and combined to form the wound core.
  • the wound iron core formed by spirally winding the strip punch can balance the poor parallelism of the iron core caused by the material of the strip punch through the spiral structure, which is caused by the difference between the silicon steel sheet and the plate, and improve the product quality.
  • the wound core of this embodiment is further improved on the basis of the technical solution of embodiment 9.
  • the circles formed by the arc surfaces 23 of the respective teeth of the unit are concentric .
  • the inner circle of the wound iron core is concentric, which can ensure the balance of the stator and rotor breath, reduce the vibration of the motor, and reduce the noise.
  • the wound iron core of this embodiment is further improved on the basis of any one of the technical solutions of the 9th and 10th embodiments.
  • the first unit group, the second unit group and the third unit group are formed by overlapping and combining 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 the first unit group is Holes 11 are provided on the strip punches of the first unit group and the third unit group.
  • the arrangement of the first unit group and the third unit group with holes 11 and the second unit group without holes 11 can further reduce the influence of the holes 11 on the magnetic circuit of the wound core.
  • the wound core of this embodiment is further improved on the basis of any one of the technical solutions of the embodiments 9, 10, and 11.
  • the thickness of the first unit group and the third unit group a If the thickness is equal, the thickness is 1mm-10mm. For specific applications, it can be 1mm, 1.2mm, 1.5mm, 5mm, 8mm, 9mm, or 10mm.
  • the thickness a of the first unit group and the third unit group are equal, which is beneficial to iron core balance and production size control.
  • a motor of this embodiment is further improved on the basis of any one of the technical solutions of Embodiments 9, 10, 11, and 12, and includes the wound core.
  • the use of the winding iron core to construct the motor can reduce the silicon steel material cost of the motor and improve the production efficiency and the performance of the motor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

一种条形冲片、卷绕式铁芯和电机，属于电机技术领域，所述条形冲片包括轭部（1）和齿部（2），所述齿部（2）包括齿宽部（21）和极靴部（22），所述齿宽部（21）一端与轭部（1）连接，另一端与极靴部（22）连接，所述极靴部（22）远离齿宽部（21）一端的端面上设有圆弧面（23）和横向面（24），所述圆弧面（23）两侧对称设有横向面（24）；一种卷绕式铁芯，由所述条形冲片螺旋卷绕形成；一种电机，包括所述卷绕式铁芯，通过螺旋结构平衡条形冲片的材料——硅钢片同板差超差造成的铁芯平行度不良，提高产品质量，针对现有技术中材料利用率低的技术问题，它有利于条形冲片对插排布，缩短材料宽度，提高硅钢材料利用率。

Description

一种条形冲片、卷绕式铁芯和电机 技术领域
本实用新型涉及电机技术领域，更具体地说是一种条形冲片、卷绕式铁芯和电机。
背景技术
目前电机设计中，为了降低硅钢材料成本，越来越多的的设计者选择了卷绕铁芯，因为通过条形冲片的对插排布可以最大限度的提高硅钢材料利用率，避免材料浪费，节省成本。
然而，并不是所有的条形冲片只要对插排布都能够达到节省成本的目的，尤其是内孔为圆弧结构的定子冲片，反而会降低对插排布的效果；传统的定转子铁芯同时冲裁工艺，设计者都在通过引进多列高速冲模具或外形结构交叉排布来提高材料利用率，所以想要达到较高的材料利用率，这对条形冲片的结构设计提出了更为严格的要求。
在电机制造中，为了保证电机中定子铁芯的绝缘性能，一般会在定子铁芯上设置绝缘骨架，目前传统的方式是将绝缘骨架直接粘接在铁芯上，这种方法操作困难、生产效率低。随着技术的发展，现在也出现了一些针对性的案例，设计了固定孔贯穿定子铁芯，用于固定绝缘骨架，然而固定孔的贯穿设置将会影响磁路，导致电机性能降低。
实用新型内容
1.实用新型要解决的技术问题
针对现有技术中材料利用率低的技术问题，本实用新型提供了一种条形冲片、卷绕式铁芯和电机，可以提高材料利用率。
2.技术方案
为达到上述目的，本实用新型提供的技术方案为：
一种条形冲片，包括互相连接的一个以上的轭部，及与所述轭部对应的齿部，所述齿部包括齿宽部和极靴部，所述齿宽部一端与轭部连接，所述齿宽部另一端与极靴部连接，所述极靴部远离齿宽部一端的端面上设有圆弧面和横向面，所述圆弧面两侧对称设有横向面。
可选的，所述轭部上开设有1个以上的孔。
可选的，所述孔距离轭部远离齿宽部一侧的最小距离为d，d≥0.5mm。
可选的，所述孔的圆心位于轭部对应的齿部等分线的延长线上。
可选的，所述齿部上设有铆扣，所述铆扣距离轭部的最小距离为n，0≤n≤6mm。
可选的，所述轭部具有一定的宽度m为2mm-8mm。
一种卷绕式铁芯，包括以上所述的条形冲片，所述条形冲片螺旋卷绕成一个单元，一个以上的所述单元重叠组合形成所述卷绕式铁芯，所述单元各个齿部的圆弧面所构成的圆同心。
可选的，所述卷绕铁芯包括均由一个以上的所述单元重叠组合形成的第一单元组、第二单元组和第三单元组，所述第一单元组、第二单元组和第三单元组依次重叠组合形成所述卷绕铁芯，所述第一单元组和第三单元组的条形冲片上均设有孔。
可选的，所述第一单元组和第三单元组的厚度a相等，所述厚度a为1mm-10mm。
一种电机，包括以上所述的卷绕式铁芯。
3.有益效果
采用本实用新型提供的技术方案，与现有技术相比，具有如下有益效果：
(1)本实用新型的一种条形冲片、卷绕式铁芯和电机，具有经济性，所述极靴部远离齿宽部一端的端面上设有圆弧面和横向面，所述圆弧面两侧对称设有横向面，有利于条形冲片对插排布，缩短材料宽度，提高硅钢材料利用率。
(2)本实用新型的一种条形冲片、卷绕式铁芯和电机，提高了工作效率，在轭部上增加孔，相对于传统的粘接工艺，采用孔定位，精度更高，生产速度更快；将孔放于轭部还可以降低孔对磁路的影响；所述条形冲片卷绕成铁芯后，轭部上增加的孔，便于铁芯端面安装绝缘骨架。
(3)本实用新型的一种条形冲片、卷绕式铁芯和电机，提高了产品质量，条形冲片螺旋卷绕为圆筒状的过程中，条形冲片的轭部会进行拉伸及压缩变形，通过最小距离d的设置，可以有效避免孔变形，以保证孔的尺寸及位置精度；所述条形冲片螺旋卷绕形成的卷绕铁芯，可以通过螺旋结构平衡条形冲片的材料——硅钢片同板差超差造成的铁芯平行度不良；卷绕铁芯的内圆同心，可以保证定、转子气息均衡，减小电机振动，降低噪音。
附图说明
图1为本实用新型实施例的条形冲片结构示意图；
图2为本实用新型实施例的条形冲片对插排布示意图；
图3为本实用新型实施例的条形冲片卷绕示意图；
图4为本实用新型实施例的有孔单元结构示意图；
图5为本实用新型实施例的卷绕式铁芯的结构示意图。
附图标号说明：1、轭部；11、孔；2、齿部；21、齿宽部；22、极靴部；23、圆弧面；24、横向面；25、铆扣；m、轭部宽度；n、铆扣距离轭部的最小距离；a、第一单元组或第三单元组的厚度；d、孔距离轭部远离齿宽部一侧的最小距离。
具体实施方式
为进一步了解本实用新型的内容，结合附图对本实用新型作详细描述。
实施例1
一种条形冲片，包括互相连接的一个以上的轭部1，及与所述轭部1对应的齿部2，其特征在于，所述齿部2包括齿宽部21和极靴部22，所述齿宽部21一端与轭部1连接，所述齿宽部21另一端与极靴部22连接，所述极靴部22远离齿宽部21一端的端面上设有圆弧面23和横向面24，所述圆弧面23两侧对称设有横向面24。
极靴部22远离齿宽部21一端的端面上设有圆弧面23和横向面24，所述圆弧面23两侧对称设有横向面24，所述横向面关于齿部中心线左右对称，且所述横向面与齿部中心线相垂直，有利于条形冲片对插排布，缩短材料宽度，提高硅钢材料利用率。
实施例2
如图1所示，本实施例的一种条形冲片，在实施例1技术方案的基础上进一步改进，所述轭部1上开设有1个以上的孔11。在轭部1上增加孔11，相对于传统的粘接工艺，采用孔11定位，精度更高，生产速度更快；将孔11放于轭部1还可以降低孔11对磁路的影响；所述条形冲片卷绕成铁芯后，轭部1上增加的孔11，便于铁芯端面安装绝缘骨架。
实施例3
如图1所示，本实施例的一种条形冲片，在实施例1、2任一技术方案的基础上进一步改进，所述孔11距离轭部1远离齿宽部21一侧的最小距离为d，d≥0.5mm，d可取0.5mm、0.6mm、0.7mm、0.55mm、0.63mm等数值。条形冲片卷绕的过程中，条形冲片的轭部1会进行拉伸及压缩变形，通过最小距离d的设置，可以有效避免孔11变形，以保证孔11的尺寸及位置精度。
实施例4
如图1所示，本实施例的一种条形冲片，在实施例1、2、3任一技术方案的基础上进一步改进，所述孔11的圆心位于轭部对应的齿部2中心线的延长线上。轭部1上对应的齿部2中心线的延长线上的磁感线最少，对磁路影响最小。
实施例5
如图1所示，本实施例的一种条形冲片，在实施例1、2、3、4任一技术方案的基础上进一步改进，所述孔11的圆心位于轭部对应的齿部2等分线的延长线上，所述齿部2等分线可选三等分线、六等分线、十二等分线。孔11的等间隔分布有利于条形冲片螺旋卷绕过程中受力均匀，成圆性更好；且孔11的等间隔分布符合冲模的加工工艺，便于生产。
实施例6
如图1所示，本实施例的一种条形冲片，在实施例1、2、3、4、5任一技术方案的基础上进一步改进，所述齿部1上设有铆扣25，所述铆扣25距离轭部1的最小距离为n，0≤n≤6mm，具体应用时，n可取0mm、1mm、0.3mm、3mm、5mm或6mm等数值。所述铆扣25可为方形，条形冲片卷绕铁芯成型后，通过方形铆扣25可以直接铆接，取消焊接工序，提高生产效率； 方形铆扣25位置设置合理，既能保证卷绕铁芯的铆接力，防止条形冲片翘片；又可以避免条形冲片卷绕过程中方形铆扣25与其它部件相互干涉，影响卷绕铁芯成型。
实施例7
如图1所示，本实施例的一种条形冲片，在实施例1-6任一技术方案的基础上进一步改进，所述轭部1具有一定的宽度m为2mm-8mm，具体应用时，m可取2mm、2.2mm、2.5mm、4mm、6mm或8mm等数值。轭部1宽度过宽影响卷绕成型；轭部1宽度过窄造成轭部磁密过高，影响电机性能。
实施例8
如图1所示，本实施例的一种条形冲片，在实施例1-7任一技术方案的基础上进一步改进，与所述一个以上的轭部1相对应的所述齿部2的圆弧面23半径相等。同一条形冲片上的所有齿部2上的圆弧面23半径相等，便于卷绕成型，且有利于保证卷绕铁芯内外圆同轴度。
实施例9
如图3、4、5所示，本实施例的一种卷绕式铁芯，在实施例1-8任一技术方案的基础上进一步改进，所述条形冲片螺旋卷绕成一个单元，一个以上的所述单元重叠组合形成所述卷绕式铁芯。所述条形冲片螺旋卷绕形成的卷绕铁芯，可以通过螺旋结构平衡条形冲片的材料——硅钢片同板差超差造成的铁芯平行度不良，提高产品质量。
实施例10
如图3、4、5所示，本实施例的一种卷绕式铁芯，在实施例9技术方案的基础上进一步改进，所述单元各个齿部的圆弧面23所构成的圆同心。卷绕铁芯的内圆同心，可以保证定、转子气息均衡，减小电机振动，降低噪音。
实施例11
如图4、5所示，本实施例的一种卷绕式铁芯，在实施例9、10任一技术方案的基础上进一步改进，所述卷绕铁芯包括均由一个以上的所述单元重叠组合形成的第一单元组、第二单元组和第三单元组，所述第一单元组、第二单元组和第三单元组依次重叠组合形成所述卷绕铁芯，所述第一单元组和第三单元组的条形冲片上均设有孔11。通过有孔11的第一单元组和第三单元组与无孔11的第二单元组的排布设置，可以进一步降低孔11对卷绕铁芯磁路的影响。
实施例12
如图5所示，本实施例的一种卷绕式铁芯，在实施例9、10、11任一技术方案的基础上进一步改进，所述第一单元组和第三单元组的厚度a相等，所述厚度为1mm-10mm，具体应用时，可取1mm、1.2mm、1.5mm、5mm、8mm、9mm、或10mm等数值。所述第一单元组和第三单元 组的厚度a相等,有利于铁芯平衡及生产尺寸控制。
实施例13
如图5所示，本实施例的一种电机，在实施例9、10、11、12任一技术方案的基础上进一步改进，包括所述的卷绕式铁芯。采用上述卷绕式铁芯构造电机，可以降低电机的硅钢材料成本，提高生产效率及电机性能。
以上示意性的对本实用新型及其实施方式进行了描述，该描述没有限制性，附图中所示的也只是本实用新型的实施方式之一，实际的结构并不局限于此。所以，如果本领域的普通技术人员受其启示，在不脱离本实用新型创造宗旨的情况下，不经创造性的设计出与该技术方案相似的结构方式及实施例，均应属于本实用新型的保护范围。

Claims (10)

  1. 一种条形冲片，包括互相连接的一个以上的轭部，及与所述轭部对应的齿部，其特征在于，所述齿部包括齿宽部和极靴部，所述齿宽部一端与轭部连接，所述齿宽部另一端与极靴部连接，所述极靴部远离齿宽部一端的端面上设有圆弧面和横向面，所述圆弧面两侧对称设有横向面。
  2. 根据权利要求1所述的一种条形冲片，其特征在于，所述轭部上开设有1个以上的孔。
  3. 根据权利要求2所述的一种条形冲片，其特征在于，所述孔距离轭部远离齿宽部一侧的最小距离为d，d≥0.5mm。
  4. 根据权利要求2所述的一种条形冲片，其特征在于，所述孔的圆心位于轭部对应的齿部等分线的延长线上。
  5. 根据权利要求1所述的一种条形冲片，其特征在于，所述齿部上设有铆扣，所述铆扣距离轭部的最小距离为n，0≤n≤6mm。
  6. 根据权利要求1所述的一种条形冲片，其特征在于，所述轭部具有一定的宽度m为2mm-8mm。
  7. 一种卷绕式铁芯，其特征在于，包括权利要求1-6任一项所述的条形冲片，所述条形冲片螺旋卷绕成一个单元，一个以上的所述单元重叠组合形成所述卷绕式铁芯，所述单元各个齿部的圆弧面所构成的圆同心。
  8. 根据权利要求7所述的卷绕式铁芯，其特征在于，所述卷绕铁芯包括均由一个以上的所述单元重叠组合形成的第一单元组、第二单元组和第三单元组，所述第一单元组、第二单元组和第三单元组依次重叠组合形成所述卷绕铁芯，所述第一单元组和第三单元组的条形冲片上均设有孔。
  9. 根据权利要求8所述的卷绕式铁芯，其特征在于，所述第一单元组和第三单元组的厚度a相等，所述厚度a为1mm-10mm。
  10. 一种电机，其特征在于，包括权利要求7-9所述的卷绕式铁芯。
PCT/CN2020/119456 2020-03-09 2020-09-30 一种条形冲片、卷绕式铁芯和电机 WO2021179586A1 (zh)

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