CN102650530A - 分解器及具备该分解器的带有分解器的轴承 - Google Patents
分解器及具备该分解器的带有分解器的轴承 Download PDFInfo
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- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
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- G01P1/00—Details of instruments
- G01P1/02—Housings
- G01P1/026—Housings for speed measuring devices, e.g. pulse generator
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
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- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/14—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by wrapping
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- H—ELECTRICITY
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- H02K—DYNAMO-ELECTRIC MACHINES
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- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/225—Detecting coils
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- H02K—DYNAMO-ELECTRIC MACHINES
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- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
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- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
- F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
Abstract
本发明的带有分解器的轴承具备对轴的旋转进行检测的分解器传感器部(3)。该分解器传感器部具备:配置于转子周围的环状的定子;以及外嵌于定子而将转子及定子覆盖的外壳,定子具备:在内周侧形成有齿的环状的定子铁心;第一绝缘体、第二绝缘体;以及隔着第一绝缘体、第二绝缘体卷绕于齿的线圈。在第一绝缘体设置有连接部,该连接部将用于轴的旋转的检测结果进行输出的线束、与从线圈延伸的引线在线束沿轴的轴向延伸的状态下进行连接。
Description
技术领域
本发明涉及检测旋转轴的旋转的分解器、以及具备该分解器的带有分解器的轴承。
背景技术
根据以往,在用于混合动力汽车等的电动发电机中,从其可靠性及耐环境性的观点出发使用非接触传感器亦即分解器作为转子位置检测用的旋转传感器。
该分解器与用于支承转子轴的轴承被一体地设置,作为与轴承单元化的带有分解器的轴承而组装入电动发电机。
分解器传感器一般由固定于旋转轴的转子、配置于转子周围的定子构成。定子具备:由磁性材料形成的定子铁心;以及线圈,该线圈经由绝缘材料亦即绝缘体卷绕于设置在定子铁心的齿。绝缘体由从其两端面夹着环状的定子铁心的一对部件构成。因此,定子形成为比较复杂的结构,并形成为在轴向上层叠多个环状部件的结构。在这样的结构中,用于取出基于线圈的输出的线束大多是以向径向外侧延伸的方式被连接的情况(例如,参照日本特开2004-120873号公报)。
近年来,混合动力汽车并不局限于大型车,还不断向小型车发展,并且电动发电机也不断向小型化的方向改进,从而上述分解器也提高了对小型化的要求。
然而,如上所述,现有的分解器大多是以线束向分解器的径向外侧延伸的方式被连接的情况,从而需要在分解器的径向外侧确保用于安置线束的空间,其结果是,担心现有的分解器无法配置于有限的空间内,从而成为阻碍与轴承单元化的带有分解器的轴承、电动发电机的小型化的主要原因。
发明内容
本发明的目的之一在于提供一种能够实现更加小型化的分解器、以及具备该分解器的带有分解器的轴承。
本发明的一个方式的分解器装置的结构上的特征是对旋转轴的旋转进行检测的分解器,该分解器的特征在于,所述分解器具备:转子,该转子能够与旋转轴一体旋转地固定于旋转轴;环状的定子,该定子被配置于所述转子的周围;以及壳体,该壳体外嵌于所述定子,且覆盖所述转子及定子,所述定子具备:环状的定子铁心,该定子铁心在内周侧形成有齿;绝缘体,该绝缘体形成为环状,且覆盖所述齿的表面;以及线圈,该线圈经由所述绝缘体而被卷绕于所述齿,在所述绝缘体设置有连接单元,该连接单元将用于输出所述旋转轴的旋转的检测结果的线束、与从所述线圈延伸的引线在所述线束沿所述旋转轴的轴向延伸的状态下进行连接。
附图说明
本发明的其他特征和优点将结合附图以及具体的实施方式予以明确,其中,相同的部件标注相同的附图标记。其中,
图1是作为本发明的一个实施方式的带有分解器的轴承的剖视图。
图2是从图1的箭头方向观察作为本发明的一个实施方式的分解器传感器部时的图。
图3是作为本发明的一个实施方式的定子的立体图。
图4是图2中IV-IV线的局部剖视图。
具体实施方式
参照附图并对本发明的优选的实施方式进行说明。图1是作为本发明的一个实施方式的带有分解器的轴承的剖视图。该带有分解器的轴承1用于对搭载于混合动力汽车等的电动发电机的轴S的支承以及对该轴S的旋转位置检测。
如图1所示,带有分解器的轴承1固定于电动发电机的电动机壳H,并将旋转轴亦即轴S旋转自如地支承于电动机壳H。
带有分解器的轴承1具备轴承部2、分解器传感器部3、与轴S一体地形成的突出部4、以及环状的外壳5(壳体)。
在突出部4的外周面形成有:供轴承部2外嵌固定的筒部4a;以及供分解器传感器部3的转子10能够一体旋转地固定的凸缘部4b。
外壳5具备:外嵌于轴承部2的第一筒部5a;供分解器传感器部3的定子11在内周面固定的第二筒部5b;以及在第二筒部5b的端部形成的安装凸缘5c。
在使安装凸缘5c与电动机壳H的内侧面h1抵接的状态下,外壳5由螺栓B固定于电动机壳H。由此,带有分解器的轴承1被固定于电动机壳H。并且,外壳5配置成在发动机壳体H的内侧覆盖分解器传感器部3及轴承部2。
突出部4及壳体5分别供轴承部2及分解器传感器部3的部件固定,由此一体地固定轴承部2及分解器传感器部3。
轴承部2具备内圈2a、与内圈2a同心地配置于内圈2a的外周侧的外圈2b、以及滚动自如地夹装于内外圈2a、2b之间的多个滚珠2c。轴承部2的内圈2a经由突出部4的筒部4a能够一体旋转地固定于轴S。另外,轴承部2的外圈2b经由外壳5的第一筒部5a固定于电动机壳H侧,由此将轴S旋转自如地支承于电动机壳H。
分解器传感器部3具备转子10和环状的定子11。所述转子10经由突出部4能够一体旋转地固定于轴S。所述定子11,该定子11通过固定于壳体5的内周面而配置于转子10的周围。
此外,虽然在本实施方式中示出了将突出部4与轴S形成为一体的情况,但是可以使与轴S分体的套筒外嵌于该轴S,以此来代替突出部4。
图2是从图1中的箭头方向观察分解器传感器部3时的图,图3是定子11的立体图。此外,在图2、3中省略外壳5而进行记载。
参照图1~3,定子11具备定子铁心12、第一和第二绝缘体13、14、以及线圈15。所述定子铁心12在内周侧形成有多个齿12a。所述第一及第二绝缘体13、14配置成从定子铁心12的轴向两侧重叠。所述线圈15被卷绕于各齿12a。
定子铁心12a是层叠多块薄板钢板等而形成的环状的部件。形成于定子铁心12a的多个齿12a向径向内侧突出设置。
在齿12a上形成有从径向两侧捆扎的捆扎部12b。
线圈15通过沿形成于齿12a的捆扎部12b卷绕绕线来设置。
齿12a与线圈15因两绝缘体13、14而绝缘。
两绝缘体13、14是由绝缘性的树脂形成的环状的部件,配置成从轴向两侧夹持定子铁心12。两绝缘体13、14形成为能够使构成线圈15的绕线与定子铁心12绝缘、且至少覆盖齿12a的捆扎部12b的形状。并且,两绝缘体13、14通过互相组合而形成为对构成线圈15的绕线进行引导的形状。
在两绝缘体13、14的内周面形成有向轴向定子铁心12侧突出的突起13a、14a(图4)。该突起13a、14a(固定部)在形成有齿12a的部分以外的部分沿周向形成。所述突起13a、14a(固定部)内嵌于定子铁心12的内周面而使两绝缘体13、14相对于定子铁心12a定位固定。
转子10是使用钢板等形成的环状的部件,如上所述,能够一体旋转地固定于凸缘部4b、且配置于定子11的内周侧。
当从轴S的轴向观察时,转子10的外周面形成为大致椭圆形。当轴S进行旋转时,转子10与轴S一起旋转,相伴与此,转子10的外周面10a与定子11之间的气隙发生变化。分解器传感器部3能够基于该气隙的变化来对轴S的旋转位置进行检测。
在与定子铁心12的朝向电动机壳H的内侧方向的面重叠的第一绝缘体13设置有:线束16,该线束16用于输出轴S的旋转位置的检测结果;以及连接部20(连接单元),该连接部20与从线圈15延伸的引线连接。
线束16由多束导线17(图3中为6束)构成。线束16的一端部与连接部20连接。在线束16的另一端部设置有插口16a,该插口16a用于与供给基于分解器传感器部3的输出的设备等连接。
图4是图2中IV-IV线的局部剖视图。
参照图2~4,连接部20由分别与各导线17的一端部侧的前端连接的接头21、以及在第一绝缘体13的外周面一体地形成的接头壳体22构成。
接头21是从导线17(线束16)的前端延长设置的棒状的部件,具备通过压接而与导线17压焊连接的主体部21a、以及从设置于主体部21a的前端侧的接头壳体22突出的端子部21b。
接头壳体22具有突设部23和壳体主体24。所述突设部23从第一绝缘体13朝径向突出设置。所述壳体主体24形成为从突设部23的外周端部与第二筒部5b的外周面相接、且朝电动机壳H的外侧方向沿轴向延伸。接头壳体22形成为在壳体主体24与突起13b之间夹持定子铁心12与壳体5的第二筒部5b。
在壳体主体24形成有多个保持孔24a,该保持孔24a分别供设置于各导线17的各接头21插入,并保持有该各接头21。
多个保持孔24a与相对于第二筒部5b的外周面的切线方向大致平行地排列而形成于壳体主体24。各保持孔24a从在电动机壳H的外侧方向侧端面开口的第一开口部24b沿轴向而形成于壳体主体24内。
在各保持孔24a从第一开口部24b插入有接头21。
另外,在保持孔24a的底部设置有在电动机壳H的内侧方向侧贯通的第二开口部24c。第二开口部24c供保持孔24a内的接头21的端子部21b插通,端子部21b露出到接头壳体22的外部。并且,第二开口部24c形成为无法通过主体部21a的大小的内径。因此,接头壳体22仅使端子部21b露出到接头壳体22的外侧,并且在保持孔24a内保持接头21的主体部21a。
另外,在接头壳体22的径向外侧面分别与各保持孔24a对应而设置有贯通保持孔24a的贯通孔25。贯通孔25与设置于接头21的主体部21a的突起部26卡合。
突起部26形成为从端子部21b侧向导线17侧延伸的长方形的板状,通过将端子部21b侧作为基端部、且向外侧方向略微折曲导线侧的端部而从主体部21a的外表面突出设置。
当接头21从第一开口部24b插入到保持孔24a时,突起部26利用保持孔24a的内周面而弹性地后退,以使得与主体部21a的外表面共面,并到达贯通孔25,由此从主体部21a的外表面突出而与贯通孔25卡合。由此,防止接头21从保持孔24a向电动机壳H的外侧方向脱落。
此外,主体部21a、突起部26以及贯通孔25设定为,在接头21的端子部21b从接头壳体22露出的状态下能够在保持孔24a内保持主体部21a的尺寸。
这样,接头21被插入到沿轴S的轴向而形成于接头壳体22的保持孔24a。接头21具备突起部26(卡合突起),当接头21被插入到保持孔24a时,该突起部26与接头壳体22的贯通孔25卡合而防止从保持孔24a脱落。由此,接头21以使突起部26卡合的状态被插入到保持孔24a,由此被保持于接头壳体22。接头21被插入到接头壳体22的保持孔24a,由此能够容易地构成连接部20。并且,能够利用突起部26在接头壳体22的保持孔24a可靠地保持接头21。
进而,如果将保持孔24a形成为能够供通用的接头插入的形状,则无需准备专用的接头便能够构成连接部20,还能够实现成本下降。
在突设部23形成有用于将从线圈15延伸的引线15a分配到各端子部21b的突起23a。该突起23a与各接头21的端子部21b对应而设置,在将来自捆扎并连接于各端子部21b的各线圈15的引线15a捆扎于端子部21b之前对其进行整理。
捆扎于端子部21b的引线15a由钎焊等连接。
如上所述,本实施方式的连接部20将从线束16的前端延长而设置的各接头21插入保持于沿轴S的轴向而形成于接头壳体22的保持孔24a,由此以线束16沿轴S的轴向延伸的状态对线束16与引线15a进行连接。
如上述那样构成的本实施方式的带有分解器的轴承1具备对轴S的旋转进行检测的分解器传感器部3。该分解器传感器部3具备转子10、环状的定子11、以及外壳5(壳体)。所述转子10一体旋转地固定于轴S。所述定子11配置于转子10的周围。所述外壳5外嵌于定子11并覆盖转子10与定子11。定子11具备环状的定子铁心12、绝缘体13、14、以及线圈15。所述定子铁心12在内周侧形成有齿12a。所述绝缘体13、14形成为环状并覆盖齿12a的表面。所述线圈15经由绝缘体13、14卷绕于齿12a。在第一绝缘体13设置有线束16与连接部20。所述线束16对轴S的旋转的检测结果进行输出。所述连接部20在线束16沿轴向延伸的状态下连接从线圈15延伸的引线15a。
根据如上述那样构成的分解器传感器部3以及带有分解器的轴承1,能够利用连接部20在线束16沿轴S的轴向延伸的状态下将该线束16与线圈15的引线15a进行连接,由此,无需在分解器传感器部3的径向外侧确保用于安置线束16的空间。由此能够将分解器传感器部3配置于有限的空间内,其结果是能够实现小型化。
并且,在本实施方式中,连接部20由棒状的接头21与接头壳体22构成。所述接头21从线束16的前端延长设置,并与引线15a连接。所述接头壳体22与第一绝缘体13的外周面形成为一体,并与轴向平行地保持接头21。
其结果是,由于接头壳体22与轴向平行地保持从线束16的前端延长设置的接头21,因此能够更加可靠地在将线束以沿轴向延伸的方式配置的状态下连接线束。
本实施方式所涉及的带有分解器的轴承1的定子11,在将第二绝缘体14配置于定子铁心12的轴向一方侧的端面之后,将该定子铁心12内嵌固定于外壳5的内周面侧,然后将第一绝缘体13配置于定子铁心12的另一方侧的端面,进而通过将线圈15卷绕于各齿12a而进行组装。
此处,如上所述,接头壳体22形成为在与内嵌于在第一绝缘其13设置的定子铁心12的内周面的突起13a(固定部)之间夹持定子铁心12以及外壳5(壳体)。由此,当在对该带有分解器的轴承1的定子11进行组装以后再配置第一绝缘体13时,能够在接头壳体22与突起13a之间夹持定子铁心12与外壳5的第二筒部5b,并配置第一绝缘体13。如果配置第一绝缘体13,则能够更加可靠地固定两绝缘体13、14、定子铁心12以及外壳5。其结果是,例如能够使卷绕线圈15等这样的后续的组装工序变得容易。
本发明并不局限于上述各实施方式。在上述实施方式中,虽例示了将本发明的带有分解器的轴承应用于电动发电机的情况,但是也能够应用于具备通常的工业用电动机等的旋转轴的其它装置。
Claims (5)
1.一种分解器,该分解器对旋转轴的旋转进行检测,其特征在于,
所述分解器具备:
转子,该转子能够与所述旋转轴一体旋转地固定于所述旋转轴;
环状的定子,该定子被配置于所述转子的周围;以及
壳体,该壳体外嵌于所述定子,且覆盖所述转子及定子;
其中,所述定子具备:
环状的定子铁心,该定子铁心在内周侧形成有齿;
绝缘体,该绝缘体形成为环状,且覆盖所述齿的表面;以及
线圈,该线圈经由所述绝缘体而被卷绕于所述齿;
其中,在所述绝缘体设置有连接单元,该连接单元将用于输出所述旋转轴的旋转的检测结果的线束、与从所述线圈延伸的引线在所述线束沿所述旋转轴的轴向延伸的状态下进行连接。
2.根据权利要求1所述的分解器,其特征在于,
所述连接单元构成为包括:棒状的接头,该接头从所述线束的前端延长设置并与所述引线连接;以及接头壳体,该接头壳体在所述绝缘体的外周面一体形成并将所述接头保持成与所述轴向平行。
3.根据权利要求2所述的分解器,其特征在于,
所述接头壳体在与固定部之间夹持定子铁心以及壳体,所述固定部内嵌于在所述绝缘体设置的定子铁心的内周面。
4.根据权利要求2或3所述的分解器,其特征在于,
在所述接头壳体沿所述轴向形成保持孔,通过在该保持孔插入所述接头而将所述接头保持成与所述轴向平行,
所述接头具备卡合突起,该卡合突起在所述接头被插入保持于所述保持孔时与所述接头壳体卡合而防止所述接头从所述保持孔脱落。
5.一种带有分解器的轴承,其具备:
轴承部,该轴承部具备固定在旋转轴并能够与旋转轴一体旋转的内圈、以及在所述内圈的外周侧与所述内圈同心地配置的外圈;
分解器,该分解器对所述旋转轴的旋转进行检测;以及
壳体,该壳体外嵌固定于所述外圈,且将所述分解器与所述轴承部固定成一体;
该带有分解器的轴承的特征在于,
所述分解器具备:
转子,该转子能够与旋转轴一体旋转地固定于该旋转轴;以及
环状的定子,该定子固定于所述壳体的内周侧,且配置于所述转子的周围;
其中,所述定子具备:
环状的定子铁心,该定子铁心在内周侧形成有齿;
绝缘体,该绝缘体形成为环状,且覆盖所述齿的表面;以及
线圈,该线圈经由所述绝缘体而被卷绕于所述齿;
其中,在所述绝缘体设置有连接单元,该连接单元将用于输出所述旋转轴的旋转的检测结果的线束、与从所述线圈延伸的引线在所述线束沿所述旋转轴的轴向延伸的状态下进行连接。
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CN108155762A (zh) * | 2016-12-06 | 2018-06-12 | 德昌电机(深圳)有限公司 | 分解器及电机 |
CN113782298A (zh) * | 2021-09-24 | 2021-12-10 | 上海赢双电机有限公司 | 轴向出线磁阻式旋转变压器 |
CN114365401A (zh) * | 2019-11-08 | 2022-04-15 | 舍弗勒技术股份两合公司 | 分解器定子夹紧板 |
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US9819241B2 (en) * | 2010-06-14 | 2017-11-14 | Black & Decker Inc. | Stator assembly for a brushless motor in a power tool |
WO2014039783A1 (en) * | 2012-09-07 | 2014-03-13 | Remy Technologies, Llc | Resolver with mounting structure and method |
WO2018026177A1 (ko) * | 2016-08-01 | 2018-02-08 | 엘지이노텍 주식회사 | 리어 홀더 및 이를 포함하는 모터 |
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CN108155762A (zh) * | 2016-12-06 | 2018-06-12 | 德昌电机(深圳)有限公司 | 分解器及电机 |
CN108155762B (zh) * | 2016-12-06 | 2021-03-02 | 德昌电机(深圳)有限公司 | 分解器及电机 |
CN114365401A (zh) * | 2019-11-08 | 2022-04-15 | 舍弗勒技术股份两合公司 | 分解器定子夹紧板 |
CN113782298A (zh) * | 2021-09-24 | 2021-12-10 | 上海赢双电机有限公司 | 轴向出线磁阻式旋转变压器 |
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