CN217115843U - Electric Actuator - Google Patents

Electric Actuator Download PDF

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Publication number
CN217115843U
CN217115843U CN202123318607.9U CN202123318607U CN217115843U CN 217115843 U CN217115843 U CN 217115843U CN 202123318607 U CN202123318607 U CN 202123318607U CN 217115843 U CN217115843 U CN 217115843U
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housing member
output shaft
output
positioning portion
electric actuator
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姜永大
雫修通
斋藤一弘
横塚孝
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Nidec Powertrain Systems Corp
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Nidec Tosok Corp
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Abstract

The utility model provides an electric actuator, this electric actuator possess: a motor unit having a motor shaft that rotates about a central axis; a transmission mechanism connected to the motor shaft; an output shaft that rotates about an output axis parallel to the central axis, and to which power of the motor shaft is transmitted via a transmission mechanism; a first housing member that rotatably supports the motor shaft and the output shaft from one axial side; and a second housing part rotatably supporting the motor shaft and the output shaft from the other axial side. The first housing member is provided with a first positioning portion, the second housing member is provided with a second positioning portion, the first housing member and the second housing member are fixed in a state where the first positioning portion and the second positioning portion overlap each other when viewed from the axial direction, and the output shaft is arranged on an imaginary straight line passing through the central axis, the first positioning portion, and the second positioning portion when viewed from the axial direction.

Description

电动致动器Electric Actuator

技术领域technical field

本实用新型涉及电动致动器。The utility model relates to an electric actuator.

背景技术Background technique

已知根据驾驶者所选择的档位对旋转式致动器进行驱动控制,从而切换自动变速器的档位的线控换挡系统。作为用于线控换挡系统的致动器,在专利文献1中公开了具备马达、减速器、输出轴以及收纳它们的外壳的旋转式致动器。There is known a shift-by-wire system in which a rotary actuator is driven and controlled according to a gear position selected by a driver, thereby switching the gear position of an automatic transmission. As an actuator used in a shift-by-wire system, Patent Document 1 discloses a rotary actuator including a motor, a speed reducer, an output shaft, and a housing that accommodates them.

专利文献1:日本特开2018-194087号公报Patent Document 1: Japanese Patent Laid-Open No. 2018-194087

专利文献1的致动器的外壳具有在轴向上彼此紧固的前外壳和后外壳。前外壳和后外壳分别从轴向的两侧将输入侧和输出轴支承为能够旋转。在这样的结构中,即使确保了前外壳与后外壳的输入轴的同轴度,也无法消除输出轴的位置偏移,从而存在输出轴的旋转效率降低的问题。The casing of the actuator of Patent Document 1 has a front casing and a rear casing fastened to each other in the axial direction. The front case and the rear case rotatably support the input side and the output shaft from both sides in the axial direction, respectively. In such a structure, even if the coaxiality of the input shafts of the front casing and the rear casing is ensured, the positional deviation of the output shaft cannot be eliminated, and there is a problem that the rotational efficiency of the output shaft decreases.

实用新型内容Utility model content

本实用新型鉴于上述情况,其目的之一在于提供能够提高输出轴的旋转效率的电动致动器。In view of the above-mentioned circumstances, one of the objects of the present invention is to provide an electric actuator capable of improving the rotational efficiency of the output shaft.

关于本实用新型的电动致动器的一个方式,该电动致动器具备:马达部,其具有以中心轴线为中心旋转的马达轴;传递机构,其与所述马达轴连结;输出轴,其以与所述中心轴线平行的输出轴线为中心旋转,所述马达轴的动力经由所述传递机构传递到该输出轴;第一外壳部件,其从轴向一侧将所述马达轴和所述输出轴支承为能够旋转;以及第二外壳部件,其从轴向另一侧将所述马达轴和所述输出轴支承为能够旋转。在所述第一外壳部件设置有第一定位部。在所述第二外壳部件设置有第二定位部。所述第一外壳部件与所述第二外壳部件按照在从轴向观察时所述第一定位部与所述第二定位部彼此重叠的状态被固定。在从轴向观察时,所述输出轴配置于通过所述中心轴线、所述第一定位部和所述第二定位部的假想直线上。According to one aspect of the electric actuator of the present invention, the electric actuator includes: a motor part having a motor shaft that rotates about a central axis; a transmission mechanism connected to the motor shaft; and an output shaft Rotating around an output axis parallel to the central axis, to which the power of the motor shaft is transmitted via the transmission mechanism; and a first housing member connecting the motor shaft and the An output shaft is rotatably supported; and a second housing member rotatably supports the motor shaft and the output shaft from the other side in the axial direction. A first positioning portion is provided on the first housing member. A second positioning portion is provided on the second housing member. The first housing member and the second housing member are fixed in a state in which the first positioning portion and the second positioning portion overlap each other when viewed from the axial direction. The output shaft is disposed on an imaginary straight line passing through the central axis, the first positioning portion, and the second positioning portion when viewed from the axial direction.

在上述方式的电动致动器中,所述第一定位部和所述第二定位部分别相对于所述假想直线呈镜像对称形状。In the electric actuator of the above aspect, the first positioning portion and the second positioning portion have mirror-symmetrical shapes with respect to the imaginary straight line, respectively.

在上述方式的电动致动器中,所述第一定位部在从轴向观察时呈从所述第一外壳部件的外缘向内侧延伸的切口状,所述第二定位部在从轴向观察时呈从所述第二外壳部件的外缘向内侧延伸的切口状。In the electric actuator of the above aspect, the first positioning portion has a notch shape extending inward from the outer edge of the first housing member when viewed in the axial direction, and the second positioning portion is in the axial direction. It is in the shape of a notch extending inward from the outer edge of the second housing member when viewed.

根据本实用新型的一个方式,能够提高电动致动器的输出轴的旋转效率。According to one aspect of the present invention, the rotational efficiency of the output shaft of the electric actuator can be improved.

附图说明Description of drawings

图1是一个实施方式的电动致动器的剖视图。FIG. 1 is a cross-sectional view of an electric actuator according to an embodiment.

图2是一个实施方式的电动致动器的立体图。FIG. 2 is a perspective view of an electric actuator according to an embodiment.

图3是从一个实施方式的电动致动器的下侧观察的平面图。FIG. 3 is a plan view viewed from the lower side of the electric actuator according to the embodiment.

图4是一个实施方式的第一切口部和第二切口部以及在组装工序中插入第一切口部和第二切口部的治具的立体图。4 is a perspective view of a first notch portion and a second notch portion and a jig inserted into the first notch portion and the second notch portion in an assembly process according to an embodiment.

标号说明Label description

9:治具;9a:第一治具片;9b:第二治具片;10:电动致动器;11:外壳;12:第一外壳部件;14:第二外壳部件;40:马达部;41:马达轴;50:减速机构(传递机构);61:输出轴;71:第一切口部(第一定位部);72:第二切口部(第二定位部);J1:中心轴线;J3:输出轴线;VL:假想直线。9: jig; 9a: first jig piece; 9b: second jig piece; 10: electric actuator; 11: housing; 12: first housing member; 14: second housing member; 40: motor part ; 41: motor shaft; 50: reduction mechanism (transmission mechanism); 61: output shaft; 71: first cutout portion (first positioning portion); 72: second cutout portion (second positioning portion); J1: center axis; J3: output axis; VL: imaginary straight line.

具体实施方式Detailed ways

各图中适当地示出的Z轴表示上下方向。Z轴的正侧(+Z侧)是上侧,Z轴的负侧(-Z侧)是下侧。在以下的说明中,将与Z轴平行的方向称为“上下方向Z”。另外,各图中适当地示出的X轴和Y轴分别表示与上下方向Z垂直的水平方向中的一个方向。X轴与Y轴彼此垂直。在以下的说明中,将与X轴平行的方向称为“第一水平方向X”,将与Y轴平行的方向称为“第二水平方向Y”。另外,将X轴的正侧(+X侧)称为“第一水平方向X的一侧”,将X轴的负侧(-X侧)称为“第一水平方向X的另一侧”。将Y轴的正侧(+Y侧)称为“第二水平方向Y的一侧”,将Y轴的负侧(-Y侧)称为“第二水平方向Y的另一侧”。另外,在本实施方式中,上下方向Z相当于规定方向,下侧相当于规定方向一侧,上侧相当于规定方向另一侧。The Z-axis appropriately shown in each figure represents the up-down direction. The positive side (+Z side) of the Z axis is the upper side, and the negative side (-Z side) of the Z axis is the lower side. In the following description, the direction parallel to the Z axis is referred to as the "up-down direction Z". In addition, the X-axis and the Y-axis which are shown suitably in each figure each represent one of the horizontal directions perpendicular|vertical to the up-down direction Z. The X and Y axes are perpendicular to each other. In the following description, the direction parallel to the X axis is referred to as "first horizontal direction X", and the direction parallel to the Y axis is referred to as "second horizontal direction Y". In addition, the positive side (+X side) of the X-axis is referred to as "one side in the first horizontal direction X", and the negative side (-X side) of the X-axis is referred to as "the other side in the first horizontal direction X" . The positive side (+Y side) of the Y axis is referred to as "one side in the second horizontal direction Y", and the negative side (-Y side) of the Y axis is referred to as "the other side in the second horizontal direction Y". In this embodiment, the vertical direction Z corresponds to the predetermined direction, the lower side corresponds to one side of the predetermined direction, and the upper side corresponds to the other side of the predetermined direction.

另外,上下方向、水平方向、上侧以及下侧仅是用于对各部分的相对位置关系进行说明的名称,实际的配置关系等也可以是这些名称所示的配置关系等以外的配置关系等。In addition, the vertical direction, the horizontal direction, the upper side, and the lower side are only names for explaining the relative positional relationship of each part, and the actual arrangement relationship and the like may be an arrangement relationship other than the arrangement relationship and the like indicated by these names. .

<电动致动器><Electric Actuator>

图1是本实施方式的电动致动器10的剖视图。FIG. 1 is a cross-sectional view of an electric actuator 10 according to the present embodiment.

本实施方式的电动致动器10安装于车辆。更详细而言,电动致动器10例如搭载于根据车辆的驾驶者的换挡操作而被驱动的线控驻车方式的致动器装置。电动致动器 10具备马达部40、减速机构(传递机构)50、输出部60、外壳11、汇流条单元90、电路板70、马达部传感器8、输出部传感器7以及分隔部件80。The electric actuator 10 of the present embodiment is mounted on a vehicle. More specifically, the electric actuator 10 is mounted on, for example, a park-by-wire actuator device that is driven in accordance with a shift operation by a driver of the vehicle. The electric actuator 10 includes a motor unit 40 , a speed reduction mechanism (transmission mechanism) 50 , an output unit 60 , a housing 11 , a bus bar unit 90 , a circuit board 70 , a motor unit sensor 8 , an output unit sensor 7 , and a partition member 80 .

以下,基于组装工序中的电动致动器10的姿势而进行电动致动器10的各部分的说明。具体而言,关于马达部40的中心轴线J1与上下方向Z平行地配置的情况,对电动致动器10的各部分进行说明。另外,安装于车辆时的电动致动器10的姿势没有特别限定,并不被在以下的说明中使用的上下方向Z等名称限定。Hereinafter, each part of the electric actuator 10 will be described based on the posture of the electric actuator 10 in the assembly process. Specifically, each part of the electric actuator 10 will be described with respect to the case where the central axis J1 of the motor portion 40 is arranged in parallel with the vertical direction Z. In addition, the posture of the electric actuator 10 when mounted on a vehicle is not particularly limited, and is not limited by names such as the vertical direction Z used in the following description.

马达部40的中心轴线J1在各图中用单点划线适当地示出。在本实施方式中,中心轴线J1沿上下方向Z延伸。换句话说,在以下的说明中,上下方向Z是中心轴线 J1的轴向。在以下的说明中,只要无特别说明,将以中心轴线J1为中心的径向简称为“径向”,将以中心轴线J1为中心的周向简称为“周向”。The central axis J1 of the motor portion 40 is appropriately shown by a dashed-dotted line in each drawing. In the present embodiment, the central axis J1 extends in the vertical direction Z. In other words, in the following description, the vertical direction Z is the axial direction of the central axis J1. In the following description, unless otherwise specified, the radial direction centered on the central axis J1 is simply referred to as a “radial direction”, and the circumferential direction centered on the central axis J1 is simply referred to as a “circumferential direction”.

马达部40具有转子40a、第一轴承44a、第二轴承44b、第三轴承44c、第四轴承44d、定子43、磁铁保持架46、第一传感器磁铁45以及螺母48。即,电动致动器 10具备转子40a、第一轴承44a、第二轴承44b、第三轴承44c、第四轴承44d、定子 43、磁铁保持架46、第一传感器磁铁45以及螺母48。在本实施方式中,第一轴承 44a、第二轴承44b、第三轴承44c以及第四轴承44d例如是球轴承。The motor unit 40 includes a rotor 40 a , a first bearing 44 a , a second bearing 44 b , a third bearing 44 c , a fourth bearing 44 d , a stator 43 , a magnet holder 46 , a first sensor magnet 45 , and a nut 48 . That is, the electric actuator 10 includes a rotor 40a, a first bearing 44a, a second bearing 44b, a third bearing 44c, a fourth bearing 44d, a stator 43, a magnet holder 46, a first sensor magnet 45, and a nut 48. In the present embodiment, the first bearing 44a, the second bearing 44b, the third bearing 44c, and the fourth bearing 44d are, for example, ball bearings.

转子40a以沿上下方向Z延伸的中心轴线J1为中心旋转。转子40a具有马达轴 41和转子主体42。即,马达部40具有马达轴41和转子主体42。马达轴41沿上下方向Z延伸。马达轴41能够以中心轴线J1为中心旋转。马达轴41具有以相对于中心轴线J1偏心的偏心轴线J2为中心的偏心轴部41a。在本实施方式中,偏心轴部41a 是马达轴41的下侧部分的一部分。偏心轴部41a固定有第三轴承44c。偏心轴线J2 与中心轴线J1平行。偏心轴部41a是以偏心轴线J2为中心延伸的圆柱状。马达轴41 中的偏心轴部41a以外的部分是以中心轴线J1为中心延伸的圆柱状。The rotor 40a rotates around a central axis J1 extending in the vertical direction Z as a center. The rotor 40a has a motor shaft 41 and a rotor main body 42 . That is, the motor part 40 has the motor shaft 41 and the rotor main body 42 . The motor shaft 41 extends in the vertical direction Z. The motor shaft 41 is rotatable about the central axis J1. The motor shaft 41 has an eccentric shaft portion 41a centered on an eccentric axis J2 that is eccentric with respect to the central axis J1. In the present embodiment, the eccentric shaft portion 41 a is a part of the lower portion of the motor shaft 41 . A third bearing 44c is fixed to the eccentric shaft portion 41a. The eccentric axis J2 is parallel to the central axis J1. The eccentric shaft portion 41a has a cylindrical shape extending around the eccentric axis J2. The portion other than the eccentric shaft portion 41a of the motor shaft 41 is in the shape of a column extending around the central axis J1.

如图2和图3所示,马达轴41具有小径部41b、中径部41c以及大径部41g。在本实施方式中,小径部41b、中径部41c以及大径部41g是马达轴41的上侧部分的一部分。As shown in FIGS. 2 and 3 , the motor shaft 41 has a small diameter portion 41b, a middle diameter portion 41c, and a large diameter portion 41g. In the present embodiment, the small-diameter portion 41 b , the middle-diameter portion 41 c , and the large-diameter portion 41 g are part of the upper portion of the motor shaft 41 .

小径部41b位于比大径部41g靠上侧的位置。在本实施方式中,小径部41b是马达轴41中的位于最上侧的部分。小径部41b的上侧的端部是马达轴41的上侧的端部。小径部41b的外周面设置有供螺母48紧固的螺纹部。The small diameter portion 41b is located above the large diameter portion 41g. In the present embodiment, the small-diameter portion 41 b is the portion located on the uppermost side of the motor shaft 41 . The upper end of the small diameter portion 41 b is the upper end of the motor shaft 41 . The outer peripheral surface of the small diameter portion 41b is provided with a screw portion to which the nut 48 is fastened.

小径部41b具有中央凹部41i,该中央凹部41i从小径部41b的上侧的端部向下侧凹陷,中心轴线J1通过该中央凹部41i。在从上侧观察时,中央凹部41i的内缘是以中心轴线J1为中心的圆形状。中央凹部41i的内侧面是以中心轴线J1为中心并且内径随着朝向下侧而变小的锥面。中央凹部41i例如是在使用车床对马达轴41实施机械加工时制作的中心孔。The small diameter portion 41b has a central recessed portion 41i which is recessed from the upper end portion of the small diameter portion 41b to the lower side, and the central axis J1 passes through the central recessed portion 41i. When viewed from the upper side, the inner edge of the central recessed portion 41i has a circular shape centered on the central axis J1. The inner surface of the central recessed portion 41i is a tapered surface with the center axis J1 as the center, and the inner diameter decreases toward the lower side. The central concave portion 41i is, for example, a center hole produced when machining the motor shaft 41 using a lathe.

中径部41c经由台阶与小径部41b的下侧连接。中径部41c的外径比小径部41b 的外径大。中径部41c固定有第一轴承44a。更详细而言,第一轴承44a的内圈嵌入并固定于中径部41c。中径部41c的上侧的端部位于比第一轴承44a靠上侧的位置。The middle-diameter portion 41c is connected to the lower side of the small-diameter portion 41b via a step. The outer diameter of the middle diameter portion 41c is larger than the outer diameter of the small diameter portion 41b. The first bearing 44a is fixed to the middle diameter portion 41c. More specifically, the inner ring of the first bearing 44a is fitted and fixed to the middle diameter portion 41c. The upper end of the middle diameter portion 41c is positioned above the first bearing 44a.

大径部41g经由台阶与中径部41c的下侧连接。大径部41g的外径比中径部41c 的外径大。大径部41g是马达轴41中的固定有转子主体42的部分。大径部41g的外周面固定有转子主体42。大径部41g的上侧的端部从下侧支承固定于中径部41c的第一轴承44a的内圈。The large-diameter portion 41g is connected to the lower side of the middle-diameter portion 41c via a step. The outer diameter of the large diameter portion 41g is larger than the outer diameter of the middle diameter portion 41c. The large diameter portion 41 g is a portion of the motor shaft 41 to which the rotor body 42 is fixed. The rotor main body 42 is fixed to the outer peripheral surface of the large diameter portion 41g. The upper end portion of the large diameter portion 41g supports the inner ring of the first bearing 44a fixed to the middle diameter portion 41c from the lower side.

第一轴承44a、第二轴承44b、第三轴承44c以及第四轴承44d固定于马达轴41。第一轴承44a和第二轴承44b将马达轴41支承为能够绕中心轴线J1旋转。第一轴承 44a是将马达轴41中的位于比大径部41g靠上侧的位置的部分支承为能够旋转的轴承。在本实施方式中,第一轴承44a是将中径部41c支承为能够旋转的轴承。第二轴承44b是将马达轴41中的位于比大径部41g靠下侧的位置的部分支承为能够旋转的轴承。在本实施方式中,第二轴承44b是将马达轴41的下侧的端部支承为能够旋转的轴承。The first bearing 44 a , the second bearing 44 b , the third bearing 44 c , and the fourth bearing 44 d are fixed to the motor shaft 41 . The first bearing 44a and the second bearing 44b support the motor shaft 41 so as to be rotatable about the central axis J1. The first bearing 44a is a bearing that rotatably supports a portion of the motor shaft 41 positioned above the large diameter portion 41g. In the present embodiment, the first bearing 44a is a bearing that rotatably supports the intermediate diameter portion 41c. The second bearing 44b is a bearing that rotatably supports a portion of the motor shaft 41 positioned below the large diameter portion 41g. In the present embodiment, the second bearing 44b is a bearing that rotatably supports the lower end portion of the motor shaft 41 .

转子主体42固定于马达轴41。更详细而言,转子主体42固定于大径部41g。转子主体42具有固定于马达轴41的转子铁芯42a和固定于转子铁芯42a的外周部的转子磁铁42b。虽然省略了图示,在本实施方式中,转子磁铁42b沿周向隔开间隔地设置有多个。The rotor body 42 is fixed to the motor shaft 41 . More specifically, the rotor main body 42 is fixed to the large diameter portion 41g. The rotor main body 42 has a rotor iron core 42a fixed to the motor shaft 41 and a rotor magnet 42b fixed to an outer peripheral portion of the rotor iron core 42a. Although illustration is omitted, in this embodiment, a plurality of rotor magnets 42b are provided at intervals in the circumferential direction.

定子43位于转子40a的径向外侧。更详细而言,定子43隔着间隙配置于转子主体42的径向外侧。定子43是包围转子主体42的径向外侧的环状。定子43例如具有定子铁芯43a、绝缘件43b以及多个线圈43c。各个线圈43c隔着绝缘件43b安装于定子铁芯43a的齿。The stator 43 is located radially outside the rotor 40a. More specifically, the stator 43 is arranged radially outward of the rotor main body 42 with a gap therebetween. The stator 43 is an annular shape surrounding the radially outer side of the rotor main body 42 . The stator 43 has, for example, a stator core 43a, an insulator 43b, and a plurality of coils 43c. The respective coils 43c are attached to the teeth of the stator core 43a via the insulator 43b.

磁铁保持架46固定于马达轴41中的位于比大径部41g靠上侧的位置的部分。磁铁保持架46是以中心轴线J1为中心的大致圆板状。磁铁保持架46例如通过对金属制的板部件进行冲压加工而制作。磁铁保持架46通过螺母48固定于马达轴41。The magnet holder 46 is fixed to a portion of the motor shaft 41 positioned above the large-diameter portion 41g. The magnet holder 46 has a substantially disk shape centered on the central axis J1. The magnet holder 46 is produced by, for example, pressing a metal plate member. The magnet holder 46 is fixed to the motor shaft 41 with a nut 48 .

第一传感器磁铁45固定于磁铁保持架46。第一传感器磁铁45在沿上下方向Z 观察时是包围马达轴41的环状。第一传感器磁铁45例如是以中心轴线J1为中心的圆环状。第一传感器磁铁45例如是板面朝向上下方向Z的板状。第一传感器磁铁45 的板面例如与上下方向Z垂直。第一传感器磁铁45以N极与S极沿周向交替的方式设置。由马达部传感器8检测第一传感器磁铁45的磁场。The first sensor magnet 45 is fixed to the magnet holder 46 . The first sensor magnet 45 has a ring shape surrounding the motor shaft 41 when viewed in the vertical direction Z. The first sensor magnet 45 is, for example, an annular shape centered on the central axis J1. The first sensor magnet 45 is, for example, a plate shape whose plate surface faces the vertical direction Z. The plate surface of the first sensor magnet 45 is perpendicular to the vertical direction Z, for example. The first sensor magnet 45 is provided so that N poles and S poles alternate in the circumferential direction. The magnetic field of the first sensor magnet 45 is detected by the motor unit sensor 8 .

减速机构50位于马达部40的下侧。减速机构50与马达轴41连结。减速机构 50与定子43的上下方向Z之间配置有分隔部件80。减速机构50配置于转子主体42 和定子43的下侧。减速机构50具有外齿齿轮51、内齿齿轮52、输出齿轮53以及多个突出部54。The speed reduction mechanism 50 is located on the lower side of the motor unit 40 . The speed reduction mechanism 50 is connected to the motor shaft 41 . A partition member 80 is arranged between the speed reduction mechanism 50 and the stator 43 in the vertical direction Z. The speed reduction mechanism 50 is arranged below the rotor main body 42 and the stator 43 . The speed reduction mechanism 50 includes an external gear 51 , an internal gear 52 , an output gear 53 , and a plurality of protrusions 54 .

外齿齿轮51是以偏心轴部41a的偏心轴线J2为中心,并沿偏心轴线J2的径向扩展的圆环板状。外齿齿轮51的径向外侧面设置有齿轮部51b。外齿齿轮51的齿轮部51b具有沿外齿齿轮51的外周排列的多个齿部。The externally toothed gear 51 is in the shape of an annular plate that expands in the radial direction of the eccentric axis J2 centered on the eccentric axis J2 of the eccentric shaft portion 41a. The radially outer surface of the externally toothed gear 51 is provided with a gear portion 51b. The gear portion 51 b of the externally-toothed gear 51 has a plurality of toothed portions arranged along the outer circumference of the externally-toothed gear 51 .

外齿齿轮51与马达轴41连结。更详细而言,外齿齿轮51经由第三轴承44c与马达轴41的偏心轴部41a连结。由此,减速机构50与马达轴41连结。外齿齿轮51 从径向外侧嵌合于第三轴承44c的外圈。由此,第三轴承44c将马达轴41与外齿齿轮51连结为能够绕偏心轴线J2相对旋转。The externally toothed gear 51 is connected to the motor shaft 41 . More specifically, the externally toothed gear 51 is connected to the eccentric shaft portion 41a of the motor shaft 41 via the third bearing 44c. Thereby, the speed reduction mechanism 50 is connected to the motor shaft 41 . The externally toothed gear 51 is fitted to the outer ring of the third bearing 44c from the radially outer side. Thereby, the third bearing 44c connects the motor shaft 41 and the externally toothed gear 51 so as to be relatively rotatable about the eccentric axis J2.

在本实施方式中,外齿齿轮51具有多个孔部51a。在本实施方式中,孔部51a 沿上下方向Z贯通外齿齿轮51。多个孔部51a沿周向配置。更详细而言,多个孔部 51a沿以偏心轴线J2为中心的周向在整周范围内等间隔地配置。孔部51a在沿上下方向Z观察时是圆形状。孔部51a的内径比突出部54的外径大。另外,孔部51a也可以是具有底部的孔。In the present embodiment, the externally toothed gear 51 has a plurality of hole portions 51a. In the present embodiment, the hole portion 51a penetrates the externally toothed gear 51 in the vertical direction Z. As shown in FIG. The plurality of hole portions 51a are arranged in the circumferential direction. More specifically, the plurality of hole portions 51a are arranged at equal intervals over the entire circumference along the circumferential direction centered on the eccentric axis J2. The hole portion 51a has a circular shape when viewed in the vertical direction Z. The inner diameter of the hole portion 51 a is larger than the outer diameter of the protruding portion 54 . In addition, the hole portion 51a may be a hole having a bottom.

内齿齿轮52位于外齿齿轮51的径向外侧,是包围外齿齿轮51的环状。在本实施方式中,内齿齿轮52是以中心轴线J1为中心的圆环状。内齿齿轮52固定于外壳 11。内齿齿轮52与外齿齿轮51啮合。The internally-toothed gear 52 is located radially outside the externally-toothed gear 51 , and is an annular shape surrounding the externally-toothed gear 51 . In the present embodiment, the internally toothed gear 52 is an annular shape centered on the central axis J1. The internal gear 52 is fixed to the casing 11. The internal gear 52 meshes with the external gear 51 .

输出齿轮53配置于外齿齿轮51和内齿齿轮52的上侧。即,输出齿轮53配置为在沿上下方向Z观察时与外齿齿轮51重叠。输出齿轮53经由第四轴承44d与马达轴 41连接。输出齿轮53例如在沿上下方向Z观察时,是以中心轴线J1为中心的圆环状。输出齿轮53的径向外侧面设置有齿轮部53a。齿轮部53a具有沿输出齿轮53的外周排列的多个齿部。输出齿轮53的齿轮部53a的齿部与后述的驱动齿轮62的齿轮部62a的齿部啮合。The output gear 53 is arranged above the external gear 51 and the internal gear 52 . That is, the output gear 53 is arranged so as to overlap with the externally toothed gear 51 when viewed in the vertical direction Z. As shown in FIG. The output gear 53 is connected to the motor shaft 41 via the fourth bearing 44d. The output gear 53 is, for example, an annular shape centered on the central axis J1 when viewed in the vertical direction Z. A gear portion 53 a is provided on the radially outer surface of the output gear 53 . The gear portion 53 a has a plurality of tooth portions arranged along the outer circumference of the output gear 53 . The tooth part of the gear part 53a of the output gear 53 meshes with the tooth part of the gear part 62a of the drive gear 62 mentioned later.

输出齿轮53的内周缘部配置为与安装于第四轴承44d的外圈的挡圈49的下侧对置。挡圈49比第四轴承44d向径向外侧突出。通过挡圈49抑制输出齿轮53相对于第四轴承44d向上侧移动。The inner peripheral edge part of the output gear 53 is arrange|positioned so that it may oppose the lower side of the retaining ring 49 attached to the outer ring of the 4th bearing 44d. The retaining ring 49 protrudes radially outward from the fourth bearing 44d. The output gear 53 is restrained from moving upward with respect to the fourth bearing 44d by the retaining ring 49 .

多个突出部54从输出齿轮53朝向外齿齿轮51沿上下方向Z突出。多个突出部 54呈从输出齿轮53的下表面向下侧突出的圆柱状。在本实施方式中,多个突出部54 与输出齿轮53一体成型。多个突出部54沿周向在整周范围内等间隔地配置。The plurality of protrusions 54 protrude in the vertical direction Z from the output gear 53 toward the externally toothed gear 51 . The plurality of protrusions 54 have a cylindrical shape protruding downward from the lower surface of the output gear 53. In the present embodiment, the plurality of protrusions 54 are integrally formed with the output gear 53 . The plurality of protrusions 54 are arranged at equal intervals over the entire circumference in the circumferential direction.

突出部54的外径比孔部51a的内径小。多个突出部54从上侧分别插入于多个孔部51a。突出部54的外周面与孔部51a的内侧面内切。多个突出部54经由孔部51a 的内侧面将外齿齿轮51支承为能够绕中心轴线J1摆动。如上所述,在本实施方式中,输出齿轮53向上侧的移动被挡圈49抑制,因此抑制设置于输出齿轮53的突出部54 从孔部51a向上侧拔出。The outer diameter of the protruding portion 54 is smaller than the inner diameter of the hole portion 51a. The plurality of protruding portions 54 are respectively inserted into the plurality of hole portions 51a from the upper side. The outer peripheral surface of the protruding portion 54 is inscribed with the inner surface of the hole portion 51a. The plurality of protruding portions 54 support the externally toothed gear 51 through the inner surface of the hole portion 51a so as to be able to swing about the central axis J1. As described above, in the present embodiment, since the upward movement of the output gear 53 is suppressed by the retaining ring 49, the protrusion 54 provided on the output gear 53 is suppressed from being pulled upward from the hole 51a.

输出部60是输出电动致动器10的驱动力的部分。输出部60配置于马达部40 的径向外侧。输出部60具有输出轴61、驱动齿轮62、滑动轴承65、第二传感器磁铁63以及磁铁保持架64。即,电动致动器10具备输出轴61、驱动齿轮62、滑动轴承65、第二传感器磁铁63以及磁铁保持架64。The output unit 60 is a portion that outputs the driving force of the electric actuator 10 . The output unit 60 is arranged radially outside the motor unit 40 . The output unit 60 includes an output shaft 61 , a drive gear 62 , a sliding bearing 65 , a second sensor magnet 63 , and a magnet holder 64 . That is, the electric actuator 10 includes the output shaft 61 , the drive gear 62 , the sliding bearing 65 , the second sensor magnet 63 , and the magnet holder 64 .

输出轴61呈沿马达轴41的上下方向Z延伸的筒状。这样,输出轴61沿与马达轴41相同的方向延伸,因此能够简化向输出轴61传递马达轴41的旋转的减速机构 50的结构。输出轴61经由减速机构50与马达轴41连结。在本实施方式中,输出轴 61呈以与中心轴线J1平行的输出轴线J3为中心的圆筒状。The output shaft 61 has a cylindrical shape extending in the vertical direction Z of the motor shaft 41 . In this way, since the output shaft 61 extends in the same direction as the motor shaft 41, the structure of the reduction mechanism 50 that transmits the rotation of the motor shaft 41 to the output shaft 61 can be simplified. The output shaft 61 is connected to the motor shaft 41 via the speed reduction mechanism 50 . In the present embodiment, the output shaft 61 has a cylindrical shape centered on the output axis J3 which is parallel to the central axis J1.

输出轴线J3是输出轴61的中心轴线。输出轴线J3与中心轴线J1平行,并沿径向远离中心轴线J1地配置。即,马达轴41与输出轴61在与上下方向Z垂直的方向上彼此分离地配置。换句话说,马达轴41与输出轴61在马达轴41的径向上彼此分离地配置。因此,与马达轴41和输出轴61沿上下方向Z排列配置的情况相比,能够使电动致动器10在上下方向Z上小型化。在图1中,输出轴线J3例如位于中心轴线 J1的右侧。另外,将以输出轴线J3为中心的径向称为“输出径向”。输出径向是输出轴61的径向。The output axis J3 is the central axis of the output shaft 61 . The output axis J3 is parallel to the center axis J1, and is arranged radially away from the center axis J1. That is, the motor shaft 41 and the output shaft 61 are arranged apart from each other in the direction perpendicular to the vertical direction Z. In other words, the motor shaft 41 and the output shaft 61 are arranged apart from each other in the radial direction of the motor shaft 41 . Therefore, compared with the case where the motor shaft 41 and the output shaft 61 are arranged side by side in the vertical direction Z, the size of the electric actuator 10 in the vertical direction Z can be reduced. In Fig. 1 , the output axis J3 is located, for example, to the right of the central axis J1. In addition, the radial direction centering on the output axis J3 is called "output radial direction". The output radial direction is the radial direction of the output shaft 61 .

输出轴61在下侧开口。输出轴61在内周面具有花键槽。输出轴61配置于在马达轴41的径向上与转子主体42重叠的位置。输出轴61的下侧部分设置有轴凸缘部 61b。轴凸缘部61b向输出径向的外侧突出。轴凸缘部61b呈以输出轴线J3为中心的圆环状。The output shaft 61 is opened on the lower side. The output shaft 61 has a spline groove on the inner peripheral surface. The output shaft 61 is arranged at a position overlapping the rotor main body 42 in the radial direction of the motor shaft 41 . A lower portion of the output shaft 61 is provided with a shaft flange portion 61b. The shaft flange portion 61b protrudes outward in the output radial direction. The shaft flange portion 61b has an annular shape centered on the output axis J3.

被驱动轴DS从下侧插入于输出轴61并与该输出轴61连结。更详细而言,设置于被驱动轴DS的外周面的花键部与设置于输出轴61的内周面的花键槽嵌合,由此输出轴61与被驱动轴DS连结。电动致动器10的驱动力经由输出轴61传递至被驱动轴DS。由此,电动致动器10使被驱动轴DS绕输出轴线J3旋转。The driven shaft DS is inserted into the output shaft 61 from the lower side, and is coupled to the output shaft 61 . More specifically, the output shaft 61 and the driven shaft DS are connected by fitting the spline portion provided on the outer peripheral surface of the driven shaft DS with the spline groove provided on the inner peripheral surface of the output shaft 61 . The driving force of the electric actuator 10 is transmitted to the driven shaft DS via the output shaft 61 . Thereby, the electric actuator 10 rotates the driven shaft DS around the output axis J3.

驱动齿轮62固定于输出轴61。驱动齿轮62从输出轴61朝向输出齿轮53延伸。驱动齿轮62与输出齿轮53啮合。虽然省略了图示,例如在沿上下方向Z观察时,驱动齿轮62呈大致扇形形状。驱动齿轮62在以输出轴线J3为中心的周向上的尺寸随着朝向输出径向的外侧而变大。驱动齿轮62在输出径向的外端部具有齿轮部。驱动齿轮62的齿轮部62a具有沿以输出轴线J3为中心的周向排列的多个齿部。驱动齿轮 62与输出齿轮53啮合。由此,驱动齿轮62与减速机构50连接。马达部40的旋转经由减速机构50传递到驱动齿轮62。The drive gear 62 is fixed to the output shaft 61 . The drive gear 62 extends from the output shaft 61 toward the output gear 53 . The drive gear 62 meshes with the output gear 53 . Although not shown, the drive gear 62 has a substantially fan shape when viewed in the vertical direction Z, for example. The dimension of the drive gear 62 in the circumferential direction centered on the output axis J3 increases toward the outer side in the output radial direction. The drive gear 62 has a gear portion at an outer end portion in the output radial direction. The gear portion 62a of the drive gear 62 has a plurality of tooth portions arranged in the circumferential direction centered on the output axis J3. The drive gear 62 meshes with the output gear 53. Thereby, the drive gear 62 is connected to the speed reduction mechanism 50 . The rotation of the motor unit 40 is transmitted to the drive gear 62 via the reduction mechanism 50 .

磁铁保持架64是以输出轴线J3为中心沿上下方向Z延伸的大致圆筒状的部件。磁铁保持架64在上下方向Z的两侧开口。磁铁保持架64固定于输出轴61的上部。在本实施方式中,磁铁保持架64配置于马达部40的第一轴承44a的径向外侧。在沿上下方向Z观察时,磁铁保持架64与电路板70局部重叠。磁铁保持架64配置于比电路板70靠下侧的位置。输出轴61被压入到磁铁保持架64的内侧。The magnet holder 64 is a substantially cylindrical member extending in the vertical direction Z with the output axis J3 as the center. The magnet holder 64 is open on both sides in the vertical direction Z. As shown in FIG. The magnet holder 64 is fixed to the upper part of the output shaft 61 . In the present embodiment, the magnet holder 64 is arranged on the radially outer side of the first bearing 44 a of the motor unit 40 . When viewed in the vertical direction Z, the magnet holder 64 partially overlaps with the circuit board 70 . The magnet holder 64 is arranged below the circuit board 70 . The output shaft 61 is press-fitted into the inner side of the magnet holder 64 .

第二传感器磁铁63呈以输出轴线J3为中心的圆环状。第二传感器磁铁63嵌合于磁铁保持架64的上端部。第二传感器磁铁63例如通过粘接剂与磁铁保持架64固定。磁铁保持架64固定于输出轴61,由此第二传感器磁铁63经由磁铁保持架64固定于输出轴61。第二传感器磁铁63的一部分与电路板70的下侧的面隔着间隙对置。The second sensor magnet 63 has an annular shape centered on the output axis J3. The second sensor magnet 63 is fitted to the upper end of the magnet holder 64 . The second sensor magnet 63 is fixed to the magnet holder 64 by, for example, an adhesive. The magnet holder 64 is fixed to the output shaft 61 , whereby the second sensor magnet 63 is fixed to the output shaft 61 via the magnet holder 64 . A part of the second sensor magnet 63 faces the lower surface of the circuit board 70 with a gap therebetween.

输出轴61的上侧的端部位于比磁铁保持架64的上侧的端部靠下侧的位置。输出轴61的上侧的端部设置有能够供工具嵌合的操作部66。操作部66例如是从输出轴 61的上侧的端部向下方凹陷的孔部。操作部66的形状例如在沿上下方向Z观察时,呈以输出轴线J3为中心的正方形或正六边形。The upper end of the output shaft 61 is positioned lower than the upper end of the magnet holder 64 . The upper end portion of the output shaft 61 is provided with an operation portion 66 into which a tool can be fitted. The operation portion 66 is, for example, a hole portion recessed downward from the upper end portion of the output shaft 61. The shape of the operation portion 66 is, for example, a square or a regular hexagon centered on the output axis J3 when viewed in the vertical direction Z.

当马达轴41绕中心轴线J1旋转时,偏心轴部41a以中心轴线J1为中心沿周向公转。偏心轴部41a的公转经由第三轴承44c传递至外齿齿轮51,从而在孔部51a 的内周面与突出部54的外周面内切的位置发生变化的同时外齿齿轮51摆动。由此,外齿齿轮51的齿轮部与内齿齿轮52的齿轮部啮合的位置沿周向变化。因此,马达轴 41的旋转力经由外齿齿轮51传递到内齿齿轮52。When the motor shaft 41 rotates around the central axis J1, the eccentric shaft portion 41a revolves around the central axis J1 in the circumferential direction. The revolution of the eccentric shaft portion 41a is transmitted to the externally toothed gear 51 via the third bearing 44c, and the externally toothed gear 51 swings while the position inscribed between the inner peripheral surface of the hole portion 51a and the outer peripheral surface of the protruding portion 54 is changed. Thereby, the position where the gear portion of the externally-toothed gear 51 meshes with the gear portion of the internally-toothed gear 52 changes in the circumferential direction. Therefore, the rotational force of the motor shaft 41 is transmitted to the internally toothed gear 52 via the externally toothed gear 51.

这里,在本实施方式中,内齿齿轮52由于固定于外壳11的后述的第二外壳部件 14而不旋转。因此,通过传递至内齿齿轮52的旋转力的反作用力,外齿齿轮51绕偏心轴线J2旋转。这时,外齿齿轮51旋转的方向与马达轴41旋转的方向为相反方向。外齿齿轮51绕偏心轴线J2的旋转经由孔部51a和突出部54传递至输出齿轮53。由此,输出齿轮53绕中心轴线J1旋转。马达轴41的旋转被减速并传递至输出齿轮 53。Here, in the present embodiment, the internally-toothed gear 52 does not rotate due to the second casing member 14 which is fixed to the casing 11, which will be described later. Therefore, the externally-toothed gear 51 is rotated about the eccentric axis J2 by the reaction force of the rotational force transmitted to the internally-toothed gear 52 . At this time, the direction in which the externally toothed gear 51 rotates is opposite to the direction in which the motor shaft 41 rotates. The rotation of the externally toothed gear 51 around the eccentric axis J2 is transmitted to the output gear 53 via the hole portion 51 a and the protruding portion 54 . Thereby, the output gear 53 rotates around the center axis J1. The rotation of the motor shaft 41 is decelerated and transmitted to the output gear 53.

当输出齿轮53旋转时,与输出齿轮53啮合的驱动齿轮62绕输出轴线J3旋转。由此,固定于驱动齿轮62的输出轴61绕输出轴线J3旋转。这样,马达部40的旋转经由减速机构50传递到输出轴61。即,马达轴41的动力经由减速机构50传递到输出轴61,从而输出轴61以输出轴线J3为中心旋转。根据这样的减速机构50的结构,能够使输出轴61的旋转相对于马达轴41的旋转比较大幅地减速。因此,能够使输出轴61的旋转扭矩比较大。因此,在使电动致动器10小型化的同时容易确保电动致动器10的输出。在本实施方式的电动致动器10中,输出轴61在旋转不到一周的范围内双向旋转。When the output gear 53 rotates, the drive gear 62 meshed with the output gear 53 rotates about the output axis J3. Thereby, the output shaft 61 fixed to the drive gear 62 rotates around the output axis J3. In this way, the rotation of the motor unit 40 is transmitted to the output shaft 61 via the speed reduction mechanism 50 . That is, the power of the motor shaft 41 is transmitted to the output shaft 61 via the speed reduction mechanism 50, and the output shaft 61 rotates around the output axis J3. According to such a configuration of the speed reduction mechanism 50 , the rotation of the output shaft 61 can be relatively greatly reduced with respect to the rotation of the motor shaft 41 . Therefore, the rotational torque of the output shaft 61 can be made relatively large. Therefore, it is easy to secure the output of the electric actuator 10 while reducing the size of the electric actuator 10 . In the electric actuator 10 of the present embodiment, the output shaft 61 rotates in both directions within a range of less than one rotation.

外壳11收纳马达部40、减速机构50、包含输出轴61的输出部60、电路板70、汇流条单元90以及分隔部件80。外壳11具有第一外壳部件12、盖部件13以及第二外壳部件14。即,电动致动器10具备第一外壳部件12、盖部件13以及第二外壳部件14。在本实施方式中,第一外壳部件12从上侧(轴向一侧)将马达轴41和输出轴61支承为能够旋转。另外,第二外壳部件14从下侧(轴向另一侧)将马达轴41 和输出轴61支承为能够旋转。The housing 11 accommodates the motor unit 40 , the speed reduction mechanism 50 , the output unit 60 including the output shaft 61 , the circuit board 70 , the bus bar unit 90 , and the partition member 80 . The casing 11 has a first casing member 12 , a cover member 13 and a second casing member 14 . That is, the electric actuator 10 includes the first housing member 12 , the cover member 13 , and the second housing member 14 . In the present embodiment, the first housing member 12 rotatably supports the motor shaft 41 and the output shaft 61 from the upper side (one side in the axial direction). In addition, the second housing member 14 rotatably supports the motor shaft 41 and the output shaft 61 from the lower side (the other side in the axial direction).

第一外壳部件12在内部收纳定子43。第一外壳部件12具有向上侧开口的开口部12a和向下侧开口的开口部12b。在本实施方式中,第一外壳部件12是金属制的。第一外壳部件12例如通过压铸而成型。第一外壳部件12例如在沿上下方向Z观察时,是多边形状。The first housing member 12 accommodates the stator 43 inside. The first case member 12 has an opening 12a that opens upward and an opening 12b that opens downward. In this embodiment, the first housing member 12 is made of metal. The first housing part 12 is formed, for example, by die casting. The first housing member 12 has a polygonal shape when viewed in the vertical direction Z, for example.

第一外壳部件12具有:方筒状的外壁部30,其构成电动致动器10的箱体;底壁部31,其从外壁部30的下侧的端部向径向内侧扩展;以及马达壳体部32和输出轴上侧保持部33,它们设置于底壁部31。即,外壳11具有外壁部30、底壁部31、马达壳体部32以及输出轴上侧保持部33。The first housing member 12 has: a rectangular cylindrical outer wall portion 30 that constitutes a housing of the electric actuator 10; a bottom wall portion 31 that extends radially inward from a lower end portion of the outer wall portion 30; and a motor The case portion 32 and the output shaft upper holding portion 33 are provided on the bottom wall portion 31 . That is, the housing 11 has an outer wall portion 30 , a bottom wall portion 31 , a motor case portion 32 , and an output shaft upper holding portion 33 .

在本实施方式中,外壁部30在沿上下方向Z观察时呈五边形的方筒状。外壁部 30从径向外侧包围马达壳体部32。外壁部30的上侧的开口部是第一外壳部件12的上侧的开口部12a。底壁部31具有向下侧开口的开口部。底壁部31的开口部的周缘设置有从底壁部31向下侧突出的筒状的筒状壁38。筒状壁38呈包围中心轴线J1和输出轴线J3的环状。被筒状壁38包围的开口部是第一外壳部件12的下侧的开口部 12b。In the present embodiment, the outer wall portion 30 has a pentagon-shaped rectangular tube shape when viewed in the vertical direction Z. The outer wall portion 30 surrounds the motor case portion 32 from the radially outer side. The opening part on the upper side of the outer wall part 30 is the opening part 12a on the upper side of the first case member 12 . The bottom wall portion 31 has an opening portion that opens downward. The peripheral edge of the opening of the bottom wall portion 31 is provided with a cylindrical cylindrical wall 38 protruding downward from the bottom wall portion 31 . The cylindrical wall 38 has an annular shape surrounding the central axis J1 and the output axis J3. The opening surrounded by the cylindrical wall 38 is the opening 12b on the lower side of the first housing member 12. As shown in FIG.

马达壳体部32和输出轴上侧保持部33设置于底壁部31的上表面。马达壳体部 32呈从径向外侧包围马达部40的筒状。在本实施方式中,马达壳体部32呈以中心轴线J1为中心并向下侧开口的圆筒状。马达壳体部32在内侧保持马达部40。更详细而言,马达壳体部32的内周面固定有马达部40的定子43。马达壳体部32具有:筒状部32b,其从底壁部31向上侧延伸;圆环板状的隔断壁32a,其从筒状部32b的上侧的端部向径向内侧扩展;以及基板固定部32h。The motor housing portion 32 and the output shaft upper holding portion 33 are provided on the upper surface of the bottom wall portion 31 . The motor case portion 32 has a cylindrical shape surrounding the motor portion 40 from the radially outer side. In the present embodiment, the motor case portion 32 has a cylindrical shape with the center axis J1 as the center and which is opened downward. The motor case portion 32 holds the motor portion 40 inside. More specifically, the stator 43 of the motor portion 40 is fixed to the inner peripheral surface of the motor case portion 32 . The motor housing portion 32 has a cylindrical portion 32b extending upward from the bottom wall portion 31, an annular plate-shaped partition wall 32a extending radially inward from an upper end portion of the cylindrical portion 32b, and Substrate fixing portion 32h.

隔断壁32a在沿上下方向Z观察的中央具有保持第一轴承44a的第一轴承保持部32c。即,第一外壳部件12具有第一轴承保持部32c。第一轴承保持部32c呈以中心轴线J1为中心并沿上下方向Z延伸的圆筒状。第一轴承保持部32c在下侧开口。第一轴承保持部32c的内周面保持有第一轴承44a。第一轴承44a间隙嵌合于第一轴承保持部32c的径向内侧。The partition wall 32a has the 1st bearing holding part 32c which holds the 1st bearing 44a in the center as seen in the up-down direction Z. That is, the first housing member 12 has the first bearing holding portion 32c. The first bearing holding portion 32c has a cylindrical shape extending in the vertical direction Z with the center axis J1 as the center. The first bearing holding portion 32c is opened on the lower side. The first bearing 44a is held on the inner peripheral surface of the first bearing holding portion 32c. The first bearing 44a is fitted to the radially inner side of the first bearing holding portion 32c with a gap.

通过隔断壁32a兼作为轴承保持架,能够抑制电动致动器10沿上下方向Z大型化。第一轴承保持部32c的下侧的端部的内周缘部被倒角。由此,第一轴承保持部 32c的下侧的端部的内径随着朝向下侧而变大。Since the partition wall 32a also functions as a bearing holder, the electric actuator 10 can be restrained from increasing in size in the vertical direction Z. The inner peripheral edge portion of the lower end portion of the first bearing holding portion 32c is chamfered. Thereby, the inner diameter of the lower end portion of the first bearing holding portion 32c increases toward the lower side.

隔断壁32a具有沿上下方向Z贯通隔断壁32a的引导孔32f。引导孔32f设置于隔断壁32a中的位于比第一轴承保持部32c的内周面32e靠径向内侧的位置的部分。引导孔32f例如是以中心轴线J1为中心的圆形状的孔。引导孔32f的下侧的端部在第一轴承保持部32c的内部开口。由此,引导孔32f的内部在第一轴承保持部32c的上侧与第一轴承保持部32c的内部连接。The partition wall 32a has a guide hole 32f penetrating the partition wall 32a in the vertical direction Z. As shown in FIG. The guide hole 32f is provided in a portion of the partition wall 32a located radially inward of the inner peripheral surface 32e of the first bearing holding portion 32c. The guide hole 32f is, for example, a circular hole centered on the central axis J1. The lower end portion of the guide hole 32f is opened inside the first bearing holding portion 32c. Thereby, the inside of the guide hole 32f is connected to the inside of the first bearing holding portion 32c on the upper side of the first bearing holding portion 32c.

基板固定部32h从隔断壁32a向上侧突出。基板固定部32h设置有多个。基板固定部32h呈圆柱状。基板固定部32h从下侧支承电路板70。基板固定部32h的上侧的端面设置有内螺纹孔。沿上下方向Z贯通电路板70的螺栓96从上侧拧入基板固定部32h的内螺纹孔。由此,基板固定部32h固定有电路板70。The board fixing portion 32h protrudes upward from the partition wall 32a. A plurality of substrate fixing portions 32h are provided. The substrate fixing portion 32h has a cylindrical shape. The board fixing portion 32h supports the circuit board 70 from the lower side. The upper end surface of the board fixing portion 32h is provided with a female screw hole. The bolts 96 penetrating the circuit board 70 in the vertical direction Z are screwed into the female screw holes of the board fixing portion 32h from the upper side. Thereby, the circuit board 70 is fixed to the board|substrate fixing|fixed part 32h.

输出轴上侧保持部33呈以输出轴线J3为中心的圆筒状。输出轴上侧保持部33 比底壁部31向下侧突出。输出轴上侧保持部33的侧面的一部分与马达壳体部32的侧面连接。输出轴上侧保持部33具有沿上下方向Z贯通输出轴上侧保持部33的孔部 33a。孔部33a的内侧嵌合有圆筒状的滑动轴承65。The output shaft upper holding portion 33 has a cylindrical shape centered on the output axis J3. The output shaft upper holding portion 33 protrudes downward from the bottom wall portion 31 . A part of the side surface of the output shaft upper holding portion 33 is connected to the side surface of the motor case portion 32 . The output shaft upper holding portion 33 has a hole portion 33a penetrating the output shaft upper holding portion 33 in the vertical direction Z. A cylindrical sliding bearing 65 is fitted into the inner side of the hole portion 33a.

图2是电动致动器10的立体图。FIG. 2 is a perspective view of the electric actuator 10 .

第一外壳部件12具有固定部34。固定部34在下侧的端面具有内螺纹孔36。即,第一外壳部件12具有向上侧凹陷的内螺纹孔(省略图示)。第一外壳部件12设置有多个固定部34。多个固定部34沿筒状壁38的周围彼此隔开间隔地配置,从而包围筒状壁38。The first housing part 12 has a fixing portion 34 . The fixing portion 34 has a female screw hole 36 on the lower end surface. That is, the first housing member 12 has a female screw hole (not shown) recessed upward. The first housing part 12 is provided with a plurality of fixing portions 34 . The plurality of fixing portions 34 are arranged at intervals along the circumference of the cylindrical wall 38 so as to surround the cylindrical wall 38 .

第一外壳部件12具有朝向下侧的紧固面37。紧固面37例如是与上下方向Z垂直的平坦面。紧固面37例如是加工面。另外,在本说明书中,“某个面是加工面”是指,某个面是通过实施切削加工和磨削加工等机械加工而制作的。在本实施方式中,紧固面37是对通过压铸而成型的第一外壳部件12的表面实施切削加工而制作的面。The first housing part 12 has a fastening surface 37 which faces downward. The fastening surface 37 is, for example, a flat surface perpendicular to the vertical direction Z. The fastening surface 37 is, for example, a machined surface. In addition, in this specification, "a certain surface is a machined surface" means that a certain surface is produced by performing machining such as cutting and grinding. In the present embodiment, the fastening surface 37 is a surface produced by cutting the surface of the first housing member 12 molded by die casting.

第一外壳部件12的紧固面37的外缘设置有第一切口部(第一定位部)71。即,第一外壳部件12设置有第一切口部71。第一切口部71在从轴向观察时,呈从第一外壳部件12的外缘向内侧延伸的切口状。第一切口部71用于供第一外壳部件12和第二外壳部件14在绕中心轴线J1的周向上定位。关于第一切口部71的结构,与后面的电动致动器10的制造方法的说明一起进行详细说明。The outer edge of the fastening surface 37 of the first housing member 12 is provided with a first cutout portion (first positioning portion) 71 . That is, the first housing member 12 is provided with the first cutout portion 71 . The first cutout portion 71 has a cutout shape extending inward from the outer edge of the first housing member 12 when viewed in the axial direction. The first cutout portion 71 is used for positioning the first housing member 12 and the second housing member 14 in the circumferential direction around the center axis J1. The structure of the first notch portion 71 will be described in detail together with the description of the manufacturing method of the electric actuator 10 later.

如图1所示,盖部件13是具有向下侧开口的凹部13b的容器状的部件。在本实施方式中,盖部件13是金属制的。盖部件13例如通过压铸而成型。盖部件13固定于第一外壳部件12的上侧。更详细而言,盖部件13与第一外壳部件12通过沿上下方向Z贯通盖部件13的多个螺栓而紧固。盖部件13封闭第一外壳部件12的上侧的开口部12a。虽然省略了图示,凹部13b收纳有安装于电路板70的上表面的电子部件。凹部13b例如收纳有安装于电路板70的电容器、晶体管等。盖部件13从上侧覆盖输出轴61。As shown in FIG. 1 , the lid member 13 is a container-shaped member having a concave portion 13b opened downward. In this embodiment, the cover member 13 is made of metal. The cover member 13 is formed by die casting, for example. The cover member 13 is fixed to the upper side of the first case member 12 . More specifically, the cover member 13 and the first case member 12 are fastened to each other by a plurality of bolts penetrating the cover member 13 in the vertical direction Z. The cover member 13 closes the upper opening portion 12 a of the first housing member 12 . Although not shown, the concave portion 13 b accommodates electronic components mounted on the upper surface of the circuit board 70 . The concave portion 13b accommodates, for example, a capacitor, a transistor, and the like mounted on the circuit board 70 . The cover member 13 covers the output shaft 61 from the upper side.

盖部件13具有位于输出轴61的上侧的插入孔13c。在沿上下方向Z观察时,插入孔13c与操作部66重叠。插入孔13c安装有能够卸下的栓部件15。例如通过设置于外周面的外螺纹部拧入设置于插入孔13c的内周面的内螺纹部,栓部件15以能够装卸的方式安装于插入孔13c。由此,插入孔13c以能够开放的方式被以能够装卸的方式安装的栓部件15封闭。因此,能够抑制异物从插入孔13c进入电动致动器10的内部。The cover member 13 has an insertion hole 13 c located on the upper side of the output shaft 61 . When viewed in the vertical direction Z, the insertion hole 13 c overlaps with the operation portion 66 . A detachable plug member 15 is attached to the insertion hole 13c. For example, the plug member 15 is detachably attached to the insertion hole 13c by screwing the male screw portion provided on the outer peripheral surface into the female screw portion provided on the inner peripheral surface of the insertion hole 13c. Thereby, the insertion hole 13c is openably closed by the plug member 15 which is detachably attached. Therefore, it is possible to prevent foreign matter from entering the inside of the electric actuator 10 from the insertion hole 13c.

另一方面,通过卸下栓部件15,能够经由插入孔13c将多角柱状的扳手等工具从电动致动器10的外部插入操作部66。由此,能够使工具与输出轴61连结。在工具与输出轴61连结的状态下,使工具绕输出轴线J3旋转,由此能够使输出轴61旋转。On the other hand, by removing the stopper member 15, a tool such as a polygonal column wrench can be inserted into the operation portion 66 from the outside of the electric actuator 10 through the insertion hole 13c. Thereby, the tool and the output shaft 61 can be connected. The output shaft 61 can be rotated by rotating the tool around the output axis J3 in a state where the tool is coupled to the output shaft 61 .

第二外壳部件14从下侧覆盖减速机构50。在本实施方式中,第二外壳部件14 是金属制的。第二外壳部件14例如通过压铸而成型。第二外壳部件14固定于第一外壳部件12的下侧。更详细而言,如图2所示,第二外壳部件14通过多个螺栓97固定于第一外壳部件12的下侧。螺栓97拧入固定部34的内螺纹孔。另外,第二外壳部件14也可以与板状的托架紧固在一起,从而固定于第一外壳部件12。The second housing member 14 covers the speed reduction mechanism 50 from the lower side. In this embodiment, the second housing member 14 is made of metal. The second housing part 14 is formed, for example, by die casting. The second housing member 14 is fixed to the underside of the first housing member 12 . More specifically, as shown in FIG. 2 , the second case member 14 is fixed to the lower side of the first case member 12 by a plurality of bolts 97 . The bolts 97 are screwed into the female screw holes of the fixing portion 34 . In addition, the second case member 14 may be fastened to the first case member 12 by being fastened to a plate-shaped bracket.

如图1所示,第二外壳部件14封闭第一外壳部件12的下侧的开口部12b。第二外壳部件14具有收纳部14p和凸缘部14c。收纳部14p是向上侧开口的容器状的部分。收纳部14p在内部收纳减速机构50。由此,第二外壳部件14在内部收纳减速机构50。收纳部14p具有第二轴承保持部14a、内侧底壁部14f、内侧周壁部14b、外侧底壁部14j、外侧周壁部14k以及圆筒部14r。即,第二外壳部件14具有第二轴承保持部14a、内侧底壁部14f、内侧周壁部14b、外侧底壁部14j、外侧周壁部14k以及圆筒部14r。As shown in FIG. 1 , the second casing member 14 closes the opening portion 12b on the lower side of the first casing member 12 . The second housing member 14 has a housing portion 14p and a flange portion 14c. The accommodating part 14p is a container-shaped part opened upward. The accommodating part 14p accommodates the speed reduction mechanism 50 inside. Thereby, the second housing member 14 accommodates the reduction mechanism 50 inside. The housing portion 14p includes a second bearing holding portion 14a, an inner bottom wall portion 14f, an inner peripheral wall portion 14b, an outer bottom wall portion 14j, an outer peripheral wall portion 14k, and a cylindrical portion 14r. That is, the second housing member 14 has a second bearing holding portion 14a, an inner bottom wall portion 14f, an inner peripheral wall portion 14b, an outer bottom wall portion 14j, an outer peripheral wall portion 14k, and a cylindrical portion 14r.

第二轴承保持部14a呈以中心轴线J1为中心的圆筒状。第二轴承保持部14a向上侧开口,在下侧具有底部14d。第二轴承保持部14a的内径比内侧周壁部14b小,并位于比内侧周壁部14b靠下侧的位置。第二轴承保持部14a保持第二轴承44b。第二轴承44b嵌合于第二轴承保持部14a的径向内侧。更详细而言,第二轴承44b间隙嵌合于第二轴承保持部14a的径向内侧。第二轴承44b与底部14d的上下方向Z之间配置有预压部件47。预压部件47例如是沿周向延伸的圆环状的波形垫圈。预压部件 47与底部14d的上侧的面和第二轴承44b的外圈的下侧的端部接触。预压部件47对第二轴承44b的外圈施加向上的预压。The second bearing holding portion 14a has a cylindrical shape centered on the central axis J1. The second bearing holding portion 14a is open to the upper side, and has a bottom portion 14d on the lower side. The inner diameter of the second bearing holding portion 14a is smaller than that of the inner peripheral wall portion 14b, and is positioned below the inner peripheral wall portion 14b. The second bearing holding portion 14a holds the second bearing 44b. The second bearing 44b is fitted to the radially inner side of the second bearing holding portion 14a. More specifically, the second bearing 44b is fitted to the radially inner side of the second bearing holding portion 14a with a gap. A preload member 47 is arranged between the second bearing 44b and the vertical direction Z of the bottom portion 14d. The preload member 47 is, for example, an annular wave washer extending in the circumferential direction. The preload member 47 is in contact with the upper surface of the bottom portion 14d and the lower end of the outer ring of the second bearing 44b. The preload member 47 applies an upward preload to the outer ring of the second bearing 44b.

内侧底壁部14f从第二轴承保持部14a的上侧的端部向径向外侧扩展。内侧底壁部14f呈以中心轴线J1为中心的圆环状。内侧周壁部14b从内侧底壁部14f的外周缘部向上侧延伸。内侧周壁部14b位于比第二轴承保持部14a靠径向外侧的位置。内侧周壁部14b呈以中心轴线J1为中心的圆筒状。内侧周壁部14b向上侧开口。内侧周壁部14b的内部嵌合有内齿齿轮52。在本实施方式中,内侧周壁部14b的内部压入有内齿齿轮52。The inner bottom wall portion 14f extends radially outward from the upper end portion of the second bearing holding portion 14a. The inner bottom wall portion 14f has an annular shape centered on the central axis J1. The inner peripheral wall portion 14b extends upward from the outer peripheral edge portion of the inner bottom wall portion 14f. The inner peripheral wall portion 14b is located radially outward of the second bearing holding portion 14a. The inner peripheral wall portion 14b has a cylindrical shape centered on the central axis J1. The inner peripheral wall portion 14b is opened to the upper side. An internally toothed gear 52 is fitted into the inside of the inner peripheral wall portion 14b. In the present embodiment, the internally toothed gear 52 is press-fitted into the inside of the inner peripheral wall portion 14b.

外侧底壁部14j从内侧周壁部14b的上侧的端部向径向外侧扩展。外侧底壁部14j的沿上下方向Z观察到的外形是与筒状壁38的沿上下方向Z观察到的外形相同的形状。外侧周壁部14k从外侧底壁部14j的外周缘部向上侧延伸。外侧周壁部14k位于比内侧周壁部14b靠径向外侧的位置。外侧周壁部14k的沿上下方向Z观察到的外形是与筒状壁38的沿上下方向Z观察到的外形相同的形状。外侧周壁部14k具有向上侧开口的开口部14s。第二外壳部件14的开口部14s与第一外壳部件12的下侧的开口部12b在上下方向Z上对置。外侧周壁部14k的径向内侧收纳有输出齿轮53。The outer bottom wall portion 14j expands radially outward from the upper end portion of the inner peripheral wall portion 14b. The outer shape viewed in the vertical direction Z of the outer bottom wall portion 14j is the same shape as the outer shape viewed in the vertical direction Z of the cylindrical wall 38 . The outer peripheral wall portion 14k extends upward from the outer peripheral edge portion of the outer bottom wall portion 14j. The outer peripheral wall portion 14k is positioned radially outward of the inner peripheral wall portion 14b. The outer shape of the outer peripheral wall portion 14k viewed in the up-down direction Z is the same shape as the outer shape of the cylindrical wall 38 viewed in the up-down direction Z. The outer peripheral wall portion 14k has an opening portion 14s that opens upward. The opening 14s of the second housing member 14 and the opening 12b on the lower side of the first housing member 12 face each other in the vertical direction Z. The output gear 53 is accommodated in the radially inner side of the outer peripheral wall portion 14k.

如图2所示,圆筒部14r从外侧底壁部14j向下侧突出。圆筒部14r呈以输出轴线J3为中心,并向上下方向的两侧开口的圆筒状。圆筒部14r的内侧面设置有向下侧开口的输出轴下侧保持部14e。如图1所示,输出轴下侧保持部14e与输出部60 在上下方向Z上重叠。衬垫61c嵌入输出轴61的下端部的外周面。输出轴下侧保持部14e经由衬垫61c将输出轴61支承为能够旋转。输出轴61的下端部通过输出轴下侧保持部14e向下侧露出。圆筒部14r的上侧的端部从下侧支承轴凸缘部61b。As shown in FIG. 2 , the cylindrical portion 14r protrudes downward from the outer bottom wall portion 14j. The cylindrical portion 14r has a cylindrical shape that is open to both sides in the vertical direction with the output axis J3 as the center. The inner surface of the cylindrical portion 14r is provided with an output shaft lower holding portion 14e that is opened downward. As shown in FIG. 1 , the output shaft lower holding portion 14e and the output portion 60 overlap in the vertical direction Z. As shown in FIG. The packing 61c is fitted into the outer peripheral surface of the lower end portion of the output shaft 61 . The output shaft lower holding portion 14e rotatably supports the output shaft 61 via the spacer 61c. The lower end portion of the output shaft 61 is exposed downward through the output shaft lower side holding portion 14e. The upper end portion of the cylindrical portion 14r supports the shaft flange portion 61b from the lower side.

凸缘部14c从收纳部14p的上侧的端部向径向外侧扩展。在本实施方式中,凸缘部14c从外侧周壁部14k的上侧的端部向径向外侧扩展。凸缘部14c呈包围收纳部 14p的上侧的开口部14s的环状。在本实施方式中,凸缘部14c包围中心轴线J1和输出轴线J3。The flange portion 14c extends radially outward from the upper end portion of the housing portion 14p. In the present embodiment, the flange portion 14c expands radially outward from the upper end portion of the outer peripheral wall portion 14k. The flange portion 14c has an annular shape surrounding the upper opening portion 14s of the housing portion 14p. In the present embodiment, the flange portion 14c surrounds the center axis J1 and the output axis J3.

如图2所示,凸缘部14c具有沿上下方向Z贯通凸缘部14c的贯通孔14i。贯通孔14i设置有多个。贯通孔14i例如设置有六个。多个贯通孔14i沿凸缘部14c所延伸的周向彼此隔开间隔地配置。螺栓97通过贯通孔14i。As shown in FIG. 2, the flange part 14c has the through-hole 14i which penetrates the flange part 14c in the up-down direction Z. A plurality of through holes 14i are provided. For example, six through holes 14i are provided. The plurality of through holes 14i are arranged at intervals along the circumferential direction in which the flange portion 14c extends. The bolt 97 passes through the through hole 14i.

凸缘部14c具有朝向上侧的紧固面14m。紧固面14m例如是与上下方向Z垂直的平坦面。紧固面14m例如是加工面。在本实施方式中,紧固面14m是对通过压铸而成型的第二外壳部件14的表面实施切削加工而制作的面。The flange portion 14c has a fastening surface 14m facing the upper side. The fastening surface 14m is a flat surface perpendicular to the vertical direction Z, for example. The fastening surface 14m is, for example, a machined surface. In the present embodiment, the fastening surface 14m is a surface produced by cutting the surface of the second housing member 14 molded by die casting.

第二外壳部件14的紧固面14m与第一外壳部件12的紧固面37接触。第二外壳部件14的紧固面14m借助螺栓97相对于第一外壳部件12的紧固面37固定。The fastening surface 14 m of the second housing member 14 is in contact with the fastening surface 37 of the first housing member 12 . The fastening surface 14 m of the second housing member 14 is fixed to the fastening surface 37 of the first housing member 12 by means of bolts 97 .

第二外壳部件14的紧固面14m的外缘设置有第二切口部(第二定位部)72。即,第二外壳部件14设置有第二切口部72。第二切口部72在从轴向观察时呈从第二外壳部件14的外缘向内侧延伸的切口状。第二切口部72用于供第一外壳部件12和第二外壳部件14在绕中心轴线J1的周向上定位。第一外壳部件12与第二外壳部件14 以在从轴向观察时使第一切口部71与第二切口部72彼此重叠的状态而固定。关于第二切口部72的结构,与后面的电动致动器10的制造方法的说明一起进行详细说明。The outer edge of the fastening surface 14m of the second housing member 14 is provided with a second cutout portion (second positioning portion) 72 . That is, the second housing member 14 is provided with the second cutout portion 72 . The second cutout portion 72 has a cutout shape extending inward from the outer edge of the second housing member 14 when viewed in the axial direction. The second cutout portion 72 is used for positioning the first housing member 12 and the second housing member 14 in the circumferential direction around the center axis J1. The first case member 12 and the second case member 14 are fixed in a state in which the first cutout portion 71 and the second cutout portion 72 overlap each other when viewed from the axial direction. The configuration of the second notch portion 72 will be described in detail together with the description of the manufacturing method of the electric actuator 10 later.

如图1所示,汇流条单元90配置于隔断壁32a的上表面。汇流条单元90具有圆环板状的汇流条保持架91和保持于汇流条保持架91的多个汇流条92。汇流条92例如设置有六根。在本实施方式中,汇流条保持架91通过使汇流条92成为嵌件部件的嵌件成型而制作。汇流条保持架91例如通过多个螺栓95固定于马达壳体部32的隔断壁32a。螺栓95例如设置有三个。As shown in FIG. 1, the bus bar unit 90 is arranged on the upper surface of the partition wall 32a. The bus bar unit 90 includes an annular plate-shaped bus bar holder 91 and a plurality of bus bars 92 held by the bus bar holder 91 . For example, six bus bars 92 are provided. In the present embodiment, the bus bar holder 91 is produced by insert molding in which the bus bar 92 is an insert member. The bus bar holder 91 is fixed to the partition wall 32 a of the motor case portion 32 by, for example, a plurality of bolts 95 . Three bolts 95 are provided, for example.

汇流条92的一侧的端部92a从汇流条保持架91的上表面向上侧突出。在本实施方式中,汇流条92的一侧的端部92a从下侧向上侧贯通电路板70。端部92a在贯通电路板70的位置通过焊接、熔接、压入等连接方法与电路板70电连接。虽然省略了图示,汇流条92的另一侧的端部把持从定子43的线圈43c引出的线圈引出线,并通过焊接或熔接与线圈43c连接。由此,定子43与电路板70经由汇流条92而电连接。One end portion 92 a of the bus bar 92 protrudes upward from the upper surface of the bus bar holder 91 . In the present embodiment, one end portion 92 a of the bus bar 92 penetrates through the circuit board 70 from the lower side to the upper side. The end portion 92a is electrically connected to the circuit board 70 by a connection method such as soldering, welding, press fitting, or the like at a position penetrating the circuit board 70 . Although not shown, the other end of the bus bar 92 holds the coil lead wire drawn from the coil 43c of the stator 43, and is connected to the coil 43c by welding or welding. Thereby, the stator 43 and the circuit board 70 are electrically connected via the bus bars 92 .

在本实施方式中,电路板70配置于马达部40和汇流条单元90的上侧。电路板 70呈板面与上下方向Z垂直的板状。电路板70安装有马达部传感器8和输出部传感器7。虽然省略了图示,电路板70的沿上下方向Z观察到的形状呈大致正方形状。电路板70经由汇流条单元90与定子43的线圈43c电连接。即,电路板70与马达部 40电连接。在本实施方式中,电路板70收纳于第一外壳部件12的开口部12a的内侧。电路板70被盖部件13从上侧覆盖。电路板70例如通过多个螺栓96固定于马达壳体部32的基板固定部32h。In the present embodiment, the circuit board 70 is arranged above the motor portion 40 and the bus bar unit 90 . The circuit board 70 has a plate shape whose board surface is perpendicular to the vertical direction Z. The motor part sensor 8 and the output part sensor 7 are mounted on the circuit board 70 . Although not shown in the drawings, the shape of the circuit board 70 as viewed in the vertical direction Z is a substantially square shape. The circuit board 70 is electrically connected to the coil 43 c of the stator 43 via the bus bar unit 90 . That is, the circuit board 70 and the motor unit 40 are electrically connected. In the present embodiment, the circuit board 70 is accommodated inside the opening portion 12 a of the first housing member 12 . The circuit board 70 is covered by the cover member 13 from the upper side. The circuit board 70 is fixed to the board fixing portion 32h of the motor case portion 32 by, for example, a plurality of bolts 96 .

马达部传感器8固定于电路板70的下表面。更详细而言,马达部传感器8固定于电路板70的下侧的面中的隔着间隙沿上下方向Z与第一传感器磁铁45对置的部分。马达部传感器8是能够检测第一传感器磁铁45的磁场的磁传感器。马达部传感器8例如是霍尔IC等霍尔元件。虽然省略了图示,马达部传感器8例如沿周向设置有三个。马达部传感器8通过检测第一传感器磁铁45的磁场来检测第一传感器磁铁 45的旋转位置,从而检测马达轴41的旋转。The motor part sensor 8 is fixed to the lower surface of the circuit board 70 . More specifically, the motor unit sensor 8 is fixed to a portion of the lower surface of the circuit board 70 facing the first sensor magnet 45 in the vertical direction Z with a gap therebetween. The motor part sensor 8 is a magnetic sensor capable of detecting the magnetic field of the first sensor magnet 45 . The motor part sensor 8 is, for example, a Hall element such as a Hall IC. Although illustration is omitted, for example, three motor part sensors 8 are provided in the circumferential direction. The motor portion sensor 8 detects the rotation position of the first sensor magnet 45 by detecting the magnetic field of the first sensor magnet 45, thereby detecting the rotation of the motor shaft 41.

输出部传感器7固定于电路板70的下表面。更详细而言,输出部传感器7固定于电路板70的下侧的面中的隔着间隙沿上下方向Z与第二传感器磁铁63对置的部分。输出部传感器7是能够检测第二传感器磁铁63的磁场的磁传感器。输出部传感器7例如是霍尔IC等霍尔元件。输出部传感器7通过检测第二传感器磁铁63的磁场来检测第二传感器磁铁63的旋转位置,从而检测输出轴61的旋转。The output part sensor 7 is fixed to the lower surface of the circuit board 70 . More specifically, the output unit sensor 7 is fixed to a portion of the lower surface of the circuit board 70 facing the second sensor magnet 63 in the vertical direction Z with a gap therebetween. The output unit sensor 7 is a magnetic sensor capable of detecting the magnetic field of the second sensor magnet 63 . The output part sensor 7 is, for example, a Hall element such as a Hall IC. The output part sensor 7 detects the rotation position of the second sensor magnet 63 by detecting the magnetic field of the second sensor magnet 63 to detect the rotation of the output shaft 61 .

<电动致动器的制造方法><Manufacturing method of electric actuator>

在本实施方式中,电动致动器10的制造方法(组装方法)主要具有第一预备工序、固定工序、第二预备工序以及盖部件固定工序。In this embodiment, the manufacturing method (assembly method) of the electric actuator 10 mainly includes a first preliminary step, a fixing step, a second preliminary step, and a cover member fixing step.

在说明书中,“作业者等”包含进行各个作业的作业者和组装装置等。各作业可以仅由作业者来进行,可以仅由组装装置来进行,也可以由作业者和组装装置来进行。另外,本实施方式的电动致动器10的第一预备工序和固定工序由省略图示的组装装置来进行。In the specification, the "worker, etc." includes a worker who performs each work, an assembling device, and the like. Each work may be performed only by the operator, only by the assembly device, or by both the operator and the assembly device. In addition, the 1st preparatory process and the fixing process of the electric actuator 10 of this embodiment are performed by the assembly apparatus which abbreviate|omits illustration.

第一预备工序是将马达部40、减速机构50以及输出部60组装于第一外壳部件 12和第二外壳部件14的工序。在第一预备工序中,定子43组装于第一外壳部件12。另一方面,减速机构50、输出部60以及转子40a组装于第二外壳部件14。The first preliminary step is a step of assembling the motor unit 40, the reduction mechanism 50, and the output unit 60 to the first housing member 12 and the second housing member 14. In the first preliminary step, the stator 43 is assembled to the first housing member 12 . On the other hand, the speed reduction mechanism 50 , the output portion 60 , and the rotor 40 a are assembled to the second housing member 14 .

进而,在第一预备工序中,第一外壳部件12以使开口部12b朝向下侧的方式安装于组装装置。在第一预备工序中,第二外壳部件14以使开口部14s朝向上侧的方式安装于组装装置。第一外壳部件12的开口部12b与第二外壳部件14的开口部14s 在上下方向上隔着间隙对置。Furthermore, in the first preliminary step, the first housing member 12 is attached to the assembling device so that the opening portion 12b faces downward. In the first preliminary step, the second case member 14 is attached to the assembling device so that the opening portion 14s faces upward. The opening 12b of the first housing member 12 and the opening 14s of the second housing member 14 are opposed to each other with a gap therebetween in the vertical direction.

固定工序是将第一外壳部件12与第二外壳部件14彼此固定的工序。固定工序具有封闭工序、周向对位工序以及紧固工序。封闭工序是使第一外壳部件12与第二外壳部件14彼此接触,并分别封闭彼此的开口部12b、14的工序。周向对位工序是使第一外壳部件12与第二外壳部件14在绕中心轴线J1的周向上进行对位的工序。紧固工序是通过紧固螺栓97而使第一外壳部件12与第二外壳部件14彼此固定的工序。The fixing step is a step of fixing the first casing member 12 and the second casing member 14 to each other. The fixing process includes a sealing process, a circumferential alignment process, and a fastening process. The closing step is a step of bringing the first casing member 12 and the second casing member 14 into contact with each other and closing the respective openings 12b and 14 of each other. The circumferential alignment step is a step of aligning the first housing member 12 and the second housing member 14 in the circumferential direction around the central axis J1. The tightening step is a step of fixing the first casing member 12 and the second casing member 14 to each other by tightening the bolts 97 .

在封闭工序中,组装装置使第一外壳部件12与第二外壳部件14在上下方向上彼此接近,并使彼此的开口部12b、14s封闭。由此,第一外壳部件12的紧固面37与第二外壳部件14的紧固面14m彼此接触。In the closing step, the assembling device makes the first case member 12 and the second case member 14 approach each other in the up-down direction, and closes the openings 12b and 14s of each other. Thereby, the fastening surface 37 of the first housing member 12 and the fastening surface 14m of the second housing member 14 are brought into contact with each other.

封闭工序使用上述组装装置而进行。在进行第一外壳部件12和第二外壳部件14相对于中心轴线J1的对位的同时进行封闭工序。在封闭工序中,组装装置一边确保第一外壳部件12的引导孔32f与组装于第二外壳部件14的转子40a的同轴度,一边使第一外壳部件12与第二外壳部件14彼此接近。由此,能够提高第一外壳部件12 和第二外壳部件14相对于中心轴线J1的同轴度。由此,抑制了马达轴41在第一外壳部件12与第二外壳部件14之间以扭曲的方式被保持的情况,从而能够提高马达轴 41的旋转效率。The sealing process is performed using the above-mentioned assembly apparatus. The closing process is performed while the first housing member 12 and the second housing member 14 are aligned with respect to the central axis J1. In the closing step, the assembling device brings the first and second casing members 12 and 14 close to each other while securing the coaxiality between the guide hole 32f of the first casing member 12 and the rotor 40a assembled to the second casing member 14 . Thereby, the coaxiality of the 1st case member 12 and the 2nd case member 14 with respect to the center axis line J1 can be improved. This prevents the motor shaft 41 from being held twisted between the first housing member 12 and the second housing member 14, so that the rotational efficiency of the motor shaft 41 can be improved.

图3是从电动致动器10的下侧观察的平面图。FIG. 3 is a plan view viewed from the lower side of the electric actuator 10 .

周向对位工序在封闭工序之后进行。另外,周向对位工序在保持第一外壳部件 12与第二外壳部件14相对于中心轴线J1的同轴度的状态下进行。通过进行封闭工序,第一外壳部件的第一切口部71与第二外壳部件14的第二切口部72在从轴向观察时,至少一部分重叠。然而,第一外壳部件12与第二外壳部件14可能产生以中心轴线J1为中心的周向的位置偏移,因此第一切口部71与第二切口部72不完全重叠。The circumferential alignment process is performed after the sealing process. In addition, the circumferential alignment process is performed while maintaining the coaxiality of the first housing member 12 and the second housing member 14 with respect to the central axis J1. By performing the closing step, the first notch portion 71 of the first housing member and the second notch portion 72 of the second housing member 14 overlap at least partially when viewed in the axial direction. However, the first case member 12 and the second case member 14 may be displaced in the circumferential direction with the center axis J1 as the center, so the first cutout portion 71 and the second cutout portion 72 do not completely overlap.

周向对位工序使用治具9而进行。在周向对位工序中,作业者等将治具9插入第一切口部71和第二切口部72。治具9分别与第一切口部71的开口缘和第二切口部的开口缘接触。由此,第一外壳部件12和第二外壳部件14中的一方或双方绕中心轴线J1相对旋转,从而周向的对位完成。在周向对位工序之后,在保持第一外壳部件 12与第二外壳部件14的相对的位置关系的状态下,进行紧固工序。The circumferential alignment process is performed using the jig 9 . In the circumferential alignment process, an operator or the like inserts the jig 9 into the first cutout portion 71 and the second cutout portion 72 . The jig 9 is in contact with the opening edge of the first cutout portion 71 and the opening edge of the second cutout portion, respectively. Thereby, one or both of the first housing member 12 and the second housing member 14 are relatively rotated around the central axis J1, and the circumferential alignment is completed. After the circumferential alignment step, the fastening step is performed in a state in which the relative positional relationship between the first housing member 12 and the second housing member 14 is maintained.

根据本实施方式,作业者等在固定工序中,在使第一切口部71与第二切口部72 在从轴向观察时彼此重合,并将治具9插入于第一切口部71和第二切口部72的状态下,使第一外壳部件12与第二外壳部件14彼此固定。另外,在进行第一外壳部件 12和第二外壳部件14相对于中心轴线J1的对位的同时进行固定工序。According to the present embodiment, in the fixing process, the operator or the like makes the first cutout portion 71 and the second cutout portion 72 overlap each other when viewed from the axial direction, and inserts the jig 9 into the first cutout portion 71 and the second cutout portion 72 . The first case member 12 and the second case member 14 are fixed to each other in the state of the second cutout portion 72 . In addition, the fixing process is performed simultaneously with the alignment of the first housing member 12 and the second housing member 14 with respect to the central axis J1.

通过进行封闭工序,第一外壳部件12和第二外壳部件14的中心轴线J1上的同轴度提高,但输出轴线J3上的同轴度未得到确保。如果产生输出轴线J3上的第一外壳部件12和第二外壳部件14的位置偏移,输出轴61扭曲,从而输出轴61的旋转效率可能降低。By performing the sealing process, the coaxiality on the central axis J1 of the first housing member 12 and the second housing member 14 is improved, but the coaxiality on the output axis J3 is not ensured. If the positional deviation of the first housing member 12 and the second housing member 14 on the output axis J3 occurs, the output shaft 61 is twisted, so that the rotational efficiency of the output shaft 61 may decrease.

根据本实施方式,在作业者等将治具9插入第一切口部71和第二切口部72的状态下,进行固定工序,由此能够进行第一外壳部件12与第二外壳部件14在绕中心轴线J1的周向上的对位工序。因此,能够进行第一外壳部件12和第二外壳部件14在输出轴线J3上的对位。即,能够提高第一外壳部件12和第二外壳部件14的在输出轴线J3上的同轴度。其结果,能够抑制输出轴61在第一外壳部件12与第二外壳部件14之间以扭曲的方式被保持的情况,从而能够提高输出轴61的旋转效率。According to the present embodiment, the fixing process is performed in a state where the operator or the like inserts the jig 9 into the first notch portion 71 and the second notch portion 72, whereby the first housing member 12 and the second housing member 14 can be attached to each other. Alignment process in the circumferential direction around the central axis J1. Therefore, alignment of the first housing member 12 and the second housing member 14 on the output axis J3 can be performed. That is, the coaxiality on the output axis J3 of the first housing member 12 and the second housing member 14 can be improved. As a result, it is possible to prevent the output shaft 61 from being held twisted between the first housing member 12 and the second housing member 14 , and it is possible to improve the rotational efficiency of the output shaft 61 .

在这里,如图3所示,在从轴向观察电动致动器10时,假设通过中心轴线J1和第一切口部71以及第二切口部72的假想直线VL。Here, as shown in FIG. 3 , when the electric actuator 10 is viewed from the axial direction, an imaginary straight line VL passing through the central axis J1 and the first and second notch portions 71 and 72 is assumed.

在从轴向观察时,假想直线VL通过第一切口部71和第二切口部72的中央。输出轴61配置于假想直线VL上。尤其是,在本实施方式中,在假想直线VL上,配置于通过输出轴61的中心的输出轴线J3上。即,假想直线VL上配置有中心轴线J1、输出轴线J3以及第一切口部71和第二切口部72。The virtual straight line VL passes through the center of the first cutout portion 71 and the second cutout portion 72 when viewed from the axial direction. The output shaft 61 is arranged on the virtual straight line VL. In particular, in this embodiment, it is arrange|positioned on the output axis line J3 which passes through the center of the output shaft 61 on the virtual straight line VL. That is, the center axis J1 , the output axis J3 , and the first and second notches 71 and 72 are arranged on the imaginary straight line VL.

如图1所示,第一外壳部件12在第一轴承保持部32c中经由第一轴承44a将马达轴41支承为能够旋转。另外,第一外壳部件12在输出轴上侧保持部33中经由滑动轴承65将输出轴61支承为能够旋转。As shown in FIG. 1 , the first housing member 12 rotatably supports the motor shaft 41 via the first bearing 44a in the first bearing holding portion 32c. In addition, the first housing member 12 rotatably supports the output shaft 61 via the sliding bearing 65 in the output shaft upper holding portion 33 .

为了确保尺寸精度,第一外壳部件12的第一轴承保持部32c、输出轴上侧保持部33以及第一切口部71通过立铣刀等被机械加工。同样地,第二外壳部件14的第二轴承保持部14a、输出轴下侧保持部14e以及第二切口部72被机械加工。In order to ensure dimensional accuracy, the first bearing holding portion 32c, the output shaft upper holding portion 33, and the first notch portion 71 of the first housing member 12 are machined with an end mill or the like. Similarly, the second bearing holding portion 14a, the output shaft lower side holding portion 14e, and the second notch portion 72 of the second housing member 14 are machined.

根据本实施方式,在第一外壳部件12中,中心轴线J1、输出轴线J3以及第一切口部71配置于假想直线VL上。因此,在第一轴承保持部32c、输出轴上侧保持部 33以及第一切口部71的机械加工时,通过使工作机械的主轴的移动方向与假想直线 VL的方向一致,能够对它们进行机械加工,而无需使主轴沿与假想直线VL垂直的方向移动。其结果,能够提高第一轴承保持部32c、输出轴上侧保持部33以及第一切口部71相对于假想直线VL的尺寸精度。由此,通过第一外壳部件12的机械加工,能够提高中心轴线J1的周向上的输出轴线J3以及第一切口部71的尺寸精度。According to the present embodiment, in the first housing member 12, the central axis J1, the output axis J3, and the first notch portion 71 are arranged on the virtual straight line VL. Therefore, during machining of the first bearing holding portion 32c, the output shaft upper holding portion 33, and the first notch portion 71, by making the moving direction of the main shaft of the machine tool coincide with the direction of the imaginary straight line VL, they can be processed. Machining without moving the spindle in a direction perpendicular to the imaginary line VL. As a result, the dimensional accuracy of the first bearing holding portion 32c, the output shaft upper holding portion 33, and the first notch portion 71 with respect to the virtual straight line VL can be improved. Thereby, the dimensional accuracy of the output axis J3 in the circumferential direction of the central axis J1 and the first notch portion 71 can be improved by machining the first housing member 12 .

同样地,第二外壳部件14在第二轴承保持部14a中经由第二轴承44b将马达轴 41支承为能够旋转。另外,第二外壳部件14在输出轴下侧保持部14e中经由衬垫61c 将输出轴61支承为能够旋转。根据本实施方式,在第二轴承保持部14a、输出轴下侧保持部14e以及第二切口部72的机械加工时,通过使工作机械的主轴的移动方向与假想直线VL的方向一致,能够对它们进行机械加工,而无需使主轴沿与假想直线 VL垂直的方向移动。其结果,能够提高第二轴承保持部14a、输出轴下侧保持部14e 以及第二切口部72相对于假想直线VL的尺寸精度。由此,通过第二外壳部件14的机械加工,能够提高中心轴线J1的周向上的输出轴线J3和第一切口部71的尺寸精度。Similarly, the second housing member 14 rotatably supports the motor shaft 41 in the second bearing holding portion 14a via the second bearing 44b. In addition, the second housing member 14 rotatably supports the output shaft 61 via the spacer 61c in the output shaft lower side holding portion 14e. According to the present embodiment, when the second bearing holding portion 14a, the output shaft lower holding portion 14e, and the second notch portion 72 are machined, by making the moving direction of the main shaft of the machine tool coincide with the direction of the imaginary straight line VL, it is possible to They are machined without moving the spindle in a direction perpendicular to the imaginary line VL. As a result, the dimensional accuracy of the second bearing holding portion 14a, the output shaft lower side holding portion 14e, and the second notch portion 72 with respect to the virtual straight line VL can be improved. Thereby, the dimensional accuracy of the output axis J3 in the circumferential direction of the central axis J1 and the first notch portion 71 can be improved by machining the second housing member 14 .

这样,根据本实施方式,在中心轴线J1的周向上,第一外壳部件12和第二外壳部件14的保持输出轴61的部分以及第一切口部71和第二切口部72的位置精度提高。由此,通过使第一切口部71与第二切口部72在中心轴线J1的周向上进行对位,能够更可靠地提高第一外壳部件12和第二外壳部件14的保持输出轴61的部分(输出轴上侧保持部33和输出轴下侧保持部14e)的位置精度。In this way, according to the present embodiment, in the circumferential direction of the central axis J1, the positional accuracy of the portions of the first housing member 12 and the second housing member 14 holding the output shaft 61 and the first and second cutout portions 71 and 72 are improved. . Accordingly, by aligning the first notch portion 71 and the second notch portion 72 in the circumferential direction of the central axis J1, the holding capacity of the output shaft 61 of the first housing member 12 and the second housing member 14 can be improved more reliably. The positional accuracy of the parts (the output shaft upper holding portion 33 and the output shaft lower holding portion 14e).

如图3所示,第一切口部71与第二切口部72在从轴向观察时是相同形状。另外,第一切口部71与第二切口部72分别相对于假想直线VL呈镜像对称形状。如上所述,本实施方式的第一切口部71和第二切口部72分别通过机械加工而形成。通过使第一切口部71与第二切口部72分别相对于假想直线VL呈镜像对称形状,能够将相对于中心轴线J1的周向两侧的尺寸精度精密加工成相同程度。由此,能够提高第一切口部71和第二切口部72的相对于中心轴线J1的周向两侧的尺寸精度。As shown in FIG. 3 , the first notch portion 71 and the second notch portion 72 have the same shape when viewed from the axial direction. In addition, each of the first cutout portion 71 and the second cutout portion 72 has a mirror-symmetrical shape with respect to the virtual straight line VL. As described above, the first notch portion 71 and the second notch portion 72 of the present embodiment are formed by machining, respectively. By making the first notch portion 71 and the second notch portion 72 mirror-symmetrical with respect to the virtual straight line VL, the dimensional accuracy on both sides in the circumferential direction with respect to the central axis J1 can be precisely processed to the same degree. As a result, the dimensional accuracy of the first notch portion 71 and the second notch portion 72 on both sides in the circumferential direction with respect to the central axis J1 can be improved.

本实施方式的第一切口部71和第二切口部72具有同幅部73和圆弧部74。同幅部73是从第一切口部71或第二切口部72的开口沿假想直线VL以相同宽度延伸的区域,具有沿宽度方向对置的一对壁面。圆弧部74配置于第一切口部71或第二切口部72的深度方向的底部。圆弧部74在从轴向观察时呈半圆的圆弧形状,并连接同幅部73的一对壁面彼此。圆弧部74的直径与同幅部73的宽度尺寸一致。第一切口部 71和第二切口部72使用与同幅部73的宽度尺寸相同的直径的立铣刀而被加工。即,根据本实施方式,能够在第一切口部71和第二切口部72的机械加工时,使工作机械的主轴沿假想直线VL移动而形成第一切口部71和第二切口部72。因此,能够提高第一切口部71和第二切口部72在中心轴线J1的周向上的尺寸精度。The first cutout portion 71 and the second cutout portion 72 of the present embodiment have the same width portion 73 and the circular arc portion 74 . The same-width portion 73 is a region extending from the opening of the first notch portion 71 or the second notch portion 72 with the same width along the imaginary straight line VL, and has a pair of wall surfaces facing each other in the width direction. The circular arc portion 74 is arranged at the bottom of the first cutout portion 71 or the second cutout portion 72 in the depth direction. The circular arc portion 74 has a semicircular arc shape when viewed from the axial direction, and connects the pair of wall surfaces of the same width portion 73 to each other. The diameter of the circular arc portion 74 is the same as the width dimension of the same width portion 73 . The first notch portion 71 and the second notch portion 72 are machined using end mills having the same diameter as the width dimension of the same width portion 73 . That is, according to the present embodiment, the first notch portion 71 and the second notch portion 72 can be formed by moving the main shaft of the machine tool along the virtual straight line VL during machining of the first notch portion 71 and the second notch portion 72 . . Therefore, the dimensional accuracy of the first notch portion 71 and the second notch portion 72 in the circumferential direction of the central axis J1 can be improved.

另外,在本实施方式中,对作为第一外壳部件12和第二切口部72的定位部,设置有切口状的定位部(第一切口部71和第二切口部72)的情况进行说明。然而,定位部只要是分别设置于第一外壳部件12和第二外壳部件14,并向轴向两侧开口,就不限定于本实施方式。例如,也可以采用沿轴向贯通的贯通孔来代替切口状的定位部。In addition, in the present embodiment, a case where a notch-shaped positioning portion (the first notch portion 71 and the second notch portion 72 ) is provided as the positioning portion of the first housing member 12 and the second notch portion 72 will be described. . However, the positioning portion is not limited to the present embodiment as long as the positioning portions are provided on the first housing member 12 and the second housing member 14, respectively, and open to both sides in the axial direction. For example, a through hole penetrating in the axial direction may be used instead of the notched positioning portion.

另外,如本实施方式所示,通过采用作为切口状的定位部的第一切口部71和第二切口部72,能够使治具9沿假想直线VL从切口开口侧插入。因此,根据本实施方式,能够容易并且高精度地对第一外壳部件12和第二外壳部件14进行定位。In addition, as shown in the present embodiment, by using the first notch portion 71 and the second notch portion 72 as notch-shaped positioning portions, the jig 9 can be inserted from the notch opening side along the virtual straight line VL. Therefore, according to this embodiment, the positioning of the first housing member 12 and the second housing member 14 can be performed easily and with high accuracy.

在从轴向观察时,治具9是随着朝向沿假想直线VL的前端侧而宽度尺寸变窄的楔形状。治具9的前端的宽度尺寸比第一切口部71和第二切口部72的同幅部73的宽度尺寸小。治具9的根部的宽度尺寸比第一切口部71和第二切口部72的同幅部 73的宽度尺寸大。在固定工序中,治具9沿假想直线VL插入于第一切口部71和第二切口部72,并与第一切口部71和第二切口部72的开口缘接触。When viewed from the axial direction, the jig 9 has a wedge shape whose width becomes narrower toward the front end side along the imaginary straight line VL. The width dimension of the front end of the jig 9 is smaller than the width dimension of the same width portion 73 of the first cutout portion 71 and the second cutout portion 72 . The width dimension of the root portion of the jig 9 is larger than the width dimension of the same width portion 73 of the first cutout portion 71 and the second cutout portion 72. In the fixing process, the jig 9 is inserted into the first cutout portion 71 and the second cutout portion 72 along the imaginary line VL, and contacts the opening edges of the first cutout portion 71 and the second cutout portion 72 .

根据本实施方式,使治具9为楔状,由此通过将治具沿假想直线VL插入,能够容易地对第一外壳部件12和第二外壳部件14进行对位。According to the present embodiment, by making the jig 9 into a wedge shape, by inserting the jig along the imaginary straight line VL, the first housing member 12 and the second housing member 14 can be easily aligned.

如上所述,本实施方式的第一外壳部件12和第二外壳部件14的第一切口部71 和第二切口部72的周向位置精度提高。另一方面,使立铣刀等切削工具沿假想直线 VL移动从而对第一切口部71和第二切口部72进行加工。因此,第一切口部71和第二切口部72的深度方向的尺寸精度未提高。根据本实施方式,治具9与第一切口部 71和第二切口部72的开口缘接触。因此,无论第一切口部71和第二切口部72的深度方向的尺寸精度如何,都能够对第一切口部71和第二切口部72进行高精度的定位。As described above, the circumferential positional accuracy of the first notch portion 71 and the second notch portion 72 of the first housing member 12 and the second housing member 14 of the present embodiment is improved. On the other hand, the first notch portion 71 and the second notch portion 72 are processed by moving a cutting tool such as an end mill along the imaginary line VL. Therefore, the dimensional accuracy in the depth direction of the first cutout portion 71 and the second cutout portion 72 is not improved. According to the present embodiment, the jig 9 is in contact with the opening edges of the first cutout portion 71 and the second cutout portion 72. Therefore, regardless of the dimensional accuracy of the first notch portion 71 and the second notch portion 72 in the depth direction, the first notch portion 71 and the second notch portion 72 can be positioned with high precision.

图4是第一切口部71和第二切口部72以及插入于它们的治具9的立体图。如图4所示,治具9优选具有相互分离的第一治具片9a和第二治具片9b。FIG. 4 is a perspective view of the first cutout portion 71 and the second cutout portion 72 and the jig 9 inserted into them. As shown in FIG. 4 , the jig 9 preferably has a first jig piece 9a and a second jig piece 9b which are separated from each other.

第一治具片9a与第二治具片9b是相同形状。即,第一治具片9a和第二治具片 9b是随着朝向沿假想直线VL的前端侧而宽度尺寸变窄的楔形状。第一治具片9a与第二治具片9b以相同的截面形状沿轴向延伸。第一治具片9a与第二治具片9b沿轴向层叠。The first jig piece 9a and the second jig piece 9b have the same shape. That is, the first jig piece 9a and the second jig piece 9b are wedge shapes whose widths become narrower as they go toward the front end sides along the imaginary straight line VL. The first jig piece 9a and the second jig piece 9b extend in the axial direction with the same cross-sectional shape. The first jig piece 9a and the second jig piece 9b are stacked in the axial direction.

第一治具片9a与第二治具片9b彼此连结。第一治具片9a和第二治具片9b允许向沿假想直线VL的方向相对移动。另一方面,第一治具片9a和第二治具片9b不允许向沿假想直线VL的方向以外的方向相对移动。即,第一治具片9a和第二治具片 9b限制沿与假想直线VL垂直的方向的相对移动。The first jig piece 9a and the second jig piece 9b are connected to each other. The first jig piece 9a and the second jig piece 9b are allowed to move relatively in the direction along the imaginary straight line VL. On the other hand, the first jig piece 9a and the second jig piece 9b are not allowed to move relatively in directions other than the direction along the imaginary straight line VL. That is, the first jig piece 9a and the second jig piece 9b restrict relative movement in the direction perpendicular to the virtual straight line VL.

第一治具片9a与第一切口部71对置配置。另一方面,第二治具片9b与第二切口部72对置配置。第一治具片9a与第二治具片9b的边界面和第一外壳部件12与第二外壳部件14的边界面配置于相同平面上。第一治具片9a沿假想直线VL插入于第一切口部71,并与第一切口部71的开口缘接触。第二治具片9b沿假想直线VL插入于第二切口部72,并与第二切口部72的开口缘接触。The first jig piece 9 a is arranged to face the first cutout portion 71 . On the other hand, the second jig piece 9b is arranged to face the second cutout portion 72 . The boundary surface between the first jig piece 9a and the second jig piece 9b and the boundary surface between the first housing member 12 and the second housing member 14 are arranged on the same plane. The first jig piece 9 a is inserted into the first cutout portion 71 along the imaginary straight line VL, and is in contact with the opening edge of the first cutout portion 71 . The second jig piece 9b is inserted into the second cutout portion 72 along the imaginary straight line VL, and is in contact with the opening edge of the second cutout portion 72 .

在本实施方式中,有时第一切口部71的开口缘的位置与第二切口部72的开口缘的位置在沿假想直线VL的方向上偏移。这是因为,设置有第一切口部71的第一外壳部件12的外缘形状与设置有第二切口部72的第二外壳部件14的外缘形状不一定一致。In the present embodiment, the position of the opening edge of the first notch portion 71 and the position of the opening edge of the second notch portion 72 may be shifted in the direction along the virtual straight line VL. This is because the shape of the outer edge of the first housing member 12 provided with the first cutout portion 71 and the shape of the outer edge of the second housing member 14 provided with the second cutout portion 72 do not necessarily coincide.

根据本实施方式,第一治具片9a与第二治具片9b能够沿假想直线VL分别独立地进行动作。因此,即使以第一切口部71和第二切口部72的开口缘的位置在沿假想直线VL的方向上彼此偏移的方式配置,也能够通过治具9准确地进行周向的定位。According to the present embodiment, the first jig piece 9a and the second jig piece 9b can each independently move along the virtual straight line VL. Therefore, even if the positions of the opening edges of the first notch portion 71 and the second notch portion 72 are arranged to be offset from each other in the direction along the virtual straight line VL, the jig 9 can accurately perform circumferential positioning.

在固定工序之后,进行第二预备工序和盖部件固定工序。第二预备工序是将电路板70和汇流条单元90安装于第二外壳部件14的工序。另外,盖部件固定工序是将盖部件13固定于第二外壳部件14的工序。通过经过盖部件固定工序,制造电动致动器10。After the fixing step, a second preliminary step and a cover member fixing step are performed. The second preliminary step is a step of attaching the circuit board 70 and the bus bar unit 90 to the second housing member 14 . In addition, the cover member fixing step is a step of fixing the cover member 13 to the second case member 14 . By going through the cover member fixing process, the electric actuator 10 is manufactured.

以上,对本实用新型的实施方式进行了说明,但各实施方式的各结构以及这些组合等指示一例,在不脱离本实用新型的主旨的范围内,能够进行结构的追加、省略以及置换以及其他变更。另外,本实用新型不被实施方式限定。The embodiments of the present invention have been described above, but each configuration of each embodiment and these combinations are given as examples, and additions, omissions, substitutions, and other modifications of configurations are possible without departing from the gist of the present invention. . In addition, this invention is not limited to embodiment.

应用了本实用新型的电动致动器只要是通过被提供电力而能够使作为对象的物体移动的装置即可,也可以是不具备减速机构的马达。另外,电动致动器也可以是具备被马达部驱动的泵部的电动泵。电动致动器的用途没有特别限定。电动致动器也可以搭载于根据驾驶者的换挡操作而被驱动的线控换挡方式的致动器装置。另外,电动致动器也可以搭载于车辆以外的设备。另外,在本说明书中进行了说明的各结构能够在相互不矛盾的范围内适当组合。The electric actuator to which the present invention is applied may be a device that can move a target object by being supplied with electric power, and may be a motor without a speed reduction mechanism. In addition, the electric actuator may be an electric pump including a pump portion driven by a motor portion. The use of the electric actuator is not particularly limited. The electric actuator may be mounted on a shift-by-wire actuator device that is driven in accordance with a driver's shift operation. In addition, the electric actuator may be mounted on equipment other than the vehicle. Moreover, each structure demonstrated in this specification can be combined suitably in the range which does not contradict each other.

Claims (3)

1.一种电动致动器,其特征在于,1. An electric actuator, characterized in that, 该电动致动器具备:The electric actuator has: 马达部,其具有以中心轴线为中心旋转的马达轴;a motor portion having a motor shaft that rotates around a central axis; 传递机构,其与所述马达轴连结;a transmission mechanism connected to the motor shaft; 输出轴,其以与所述中心轴线平行的输出轴线为中心旋转,所述马达轴的动力经由所述传递机构传递到该输出轴;an output shaft that rotates around an output axis parallel to the central axis, to which the power of the motor shaft is transmitted via the transmission mechanism; 第一外壳部件,其从轴向一侧将所述马达轴和所述输出轴支承为能够旋转;以及a first housing member rotatably supporting the motor shaft and the output shaft from one axial side; and 第二外壳部件,其从轴向另一侧将所述马达轴和所述输出轴支承为能够旋转,a second housing member that rotatably supports the motor shaft and the output shaft from the other side in the axial direction, 在所述第一外壳部件设置有第一定位部,A first positioning portion is provided on the first housing member, 在所述第二外壳部件设置有第二定位部,The second housing member is provided with a second positioning portion, 所述第一外壳部件与所述第二外壳部件按照在从轴向观察时所述第一定位部与所述第二定位部彼此重叠的状态被固定,The first housing member and the second housing member are fixed in a state in which the first positioning portion and the second positioning portion overlap each other when viewed from the axial direction, 在从轴向观察时,所述输出轴配置于通过所述中心轴线、所述第一定位部和所述第二定位部的假想直线上。The output shaft is disposed on an imaginary straight line passing through the central axis, the first positioning portion, and the second positioning portion when viewed from the axial direction. 2.根据权利要求1所述的电动致动器,其特征在于,2. The electric actuator of claim 1, wherein: 所述第一定位部和所述第二定位部分别相对于所述假想直线呈镜像对称形状。The first positioning portion and the second positioning portion are respectively mirror-symmetrical with respect to the imaginary straight line. 3.根据权利要求2所述的电动致动器,其特征在于,3. The electric actuator of claim 2, wherein 所述第一定位部在从轴向观察时呈从所述第一外壳部件的外缘向内侧延伸的切口状,The first positioning portion is in the shape of a notch extending inward from the outer edge of the first housing member when viewed from the axial direction, 所述第二定位部在从轴向观察时呈从所述第二外壳部件的外缘向内侧延伸的切口状。The second positioning portion has a notch shape extending inward from the outer edge of the second housing member when viewed in the axial direction.
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