Motor

Abstract

To provide a motor which enables further simplification of a wiring drawing structure.SOLUTION: A motor 1 includes: a driving source unit 3 having a first wiring; a rotation detection unit 4 having a second wiring; and a motor housing 2. The motor housing has: a first motor housing 2A which houses at least part of the driving source unit; and a second motor housing 2B which houses at least part of the rotation detection unit. The first motor housing has a first penetration part 24 which penetrates through a peripheral wall part of the first motor housing in a radial direction and is open to one side in an axial direction. The second motor housing has a second penetration part 29 which penetrates through a peripheral wall part of the second motor housing in the radial direction and is open to the other side in the axial direction. The first wiring is drawn to the outside of the first motor housing through the first penetration part. The second wiring is drawn to the outside of the second motor housing through the second penetration part.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a motor. [Background technology]

[0002] For example, Patent Document 1 describes a motor in which two types of wiring, a power line which is a power source line for connecting the coil wire to the outside, and a resolver signal line for detecting the rotational position of the motor, are pulled out and extend in approximately the same direction toward the outside of the motor housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5931903 Summary of the Invention [Problem to be solved by the invention]

[0004] In the motors described above, the locations where the power lines and resolver signal lines can be pulled out from the motor housing are often limited. In addition, the motor housing on the cap side has a complex shape, which means that the wiring housed inside the motor housing and led to the pull-out locations tends to be complicated, and the members that hold the wiring also tend to be complicated, resulting in high manufacturing costs. For this reason, a structure that simplifies the pull-out of the wiring has been demanded.

[0005] An object of one aspect of the present invention is to provide a motor that can further simplify the wiring lead-out structure. [Means for solving the problem]

[0006] One embodiment of the motor of the present invention includes a rotor rotatable about a central axis, a stator having a plurality of coils and radially facing the rotor, a drive source unit having a first wiring electrically connected to the coils, a rotation detection unit having a rotation sensor capable of detecting rotation of the rotor and a second wiring electrically connected to the rotation sensor, and a motor housing that accommodates the rotor, the stator, the drive source unit, and the rotation detection unit therein, the motor housing having a cylindrical first motor housing that opens to one axial side and accommodates at least a portion of the drive source unit, and a first motor housing that is electrically connected to the first motor housing. and a cylindrical second motor housing disposed opposite one axial side of the first motor housing, opening to the other axial side, and accommodating at least a part of the rotation detection unit, wherein the first motor housing has a first through-portion penetrating a peripheral wall portion of the first motor housing in a radial direction and opening to the one axial side, and the second motor housing has a second through-portion penetrating a peripheral wall portion of the second motor housing in a radial direction and opening to the other axial side, the first wiring being drawn out to the outside of the first motor housing through the first through-portion, and the second wiring being drawn out to the outside of the second motor housing through the second through-portion. The drive source unit has a first wiring support member that holds the first wiring, the first wiring support member is fitted into the first through-portion, the rotation detection unit has a second wiring support member that holds the second wiring, the second wiring support member is fitted into the second through-portion, and a portion of the first wiring support member and a portion of the second wiring support member face each other in the axial direction. do. Effect of the Invention

[0007] According to one aspect of the present invention, there is provided a motor that can further simplify the wiring lead-out structure. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a motor according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the motor according to the embodiment. [Diagram 3] FIG. 3 is a vertical cross-sectional view of the motor according to the embodiment. [Figure 4] FIG. 4 is a perspective view showing a part of the motor according to the embodiment. [Diagram 5]FIG. 5 is a side view of the first and second wiring support members according to one embodiment. [Figure 6] FIG. 6 is a perspective view illustrating a portion of a first wiring support member according to one embodiment. [Figure 7] FIG. 7 is a cross-sectional view perpendicular to the central axis of the first motor housing of one embodiment. [Figure 8] FIG. 8 is a perspective view illustrating a portion of a first wiring support member according to one embodiment. [Figure 9] FIG. 9 is a cross-sectional view perpendicular to the central axis of the first motor housing of another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments to which the present invention is applied will be described in detail with reference to the drawings.

[0010] A motor 1 according to the present embodiment shown in FIGS. 1 to 3 is mounted on, for example, a vehicle. In this embodiment, the central axis J of the motor 1 extends in the vertical direction. The direction in which the central axis J extends is, for example, the vertical direction Y of the vehicle on which the motor 1 is mounted. In the following description, unless otherwise specified, the direction parallel to the central axis J is simply referred to as the "axial direction", the radial direction centered on the central axis J is simply referred to as the "radial direction", and the circumferential direction centered on the central axis J, i.e., around the axis of the central axis J, is simply referred to as the "circumferential direction". In the drawings, the axial direction is indicated by the Y axis as appropriate, the side of the Y axis toward which the arrow points is referred to as the "upper side", and the opposite side of the Y axis to which the arrow points is referred to as the "lower side". In this embodiment, the upper side corresponds to the "one axial side", and the lower side corresponds to the "other axial side".

[0011] In the drawings, the horizontal direction perpendicular to the axial direction is indicated as the Z axis, the side of the Z axis toward which the arrow points is called the right side, and the opposite side of the Z axis toward which the arrow points is called the left side. Note that a "parallel direction" includes a direction that is approximately parallel, and a "perpendicular direction" includes a direction that is approximately perpendicular.

[0012] The motor 1 includes a rotor 11 rotatable around a central axis J, a stator 12 having a plurality of coils 12B and radially opposed to the rotor 11, a drive source unit 3 having a first wiring 34 electrically connected to the coils 12B, a rotation detection unit 4 having a rotation sensor 4A capable of detecting the rotation of the rotor 11 and a second wiring 41 electrically connected to the rotation sensor 4A, and a motor housing 2 that accommodates the rotor 11, the stator 12, the drive source unit 3, and the rotation detection unit 4 therein.

[0013] 3, the rotor 11 rotates around a central axis J extending along the vertical direction Y. The rotor 11 has a shaft 11A that can rotate around the central axis J, and a rotor body 11B fixed to the outer circumferential surface of the shaft 11A. The rotor body 11B has, for example, a rotor core and a magnet.

[0014] The shaft 11A is supported by a first bearing 13A and a second bearing 13B so as to be rotatable about a central axis J. A rotor core of a rotor body 11B is fixed to the outer circumferential surface of the shaft 11A. The shaft 11A is a cylindrical hollow shaft extending in the axial direction about the central axis J. The shaft 11A extends inside the motor housing 2.

[0015] The stator 12 is located radially outside the rotor 11. The stator 12 has an annular stator core 12A surrounding the rotor body 11B and a plurality of coils 12B attached to the stator core 12A. The stator core 12A is, for example, cylindrical and centered on a central axis J. The coils 12B are attached to the stator core 12A, for example, via an insulator (not shown). An end of the coil 12B is drawn out to the upper side of the stator 12 and connected to a bus bar 32 of the drive source unit 3.

[0016] The first bearing 13A and the second bearing 13B support the shaft 11A rotatably around the central axis J. The first bearing 13A rotatably supports a portion of the shaft 11A that is located below a portion to which the rotor body 11B is fixed. The second bearing 13B rotatably supports a portion of the shaft 11A that is located above a portion to which the rotor body 11B is fixed. The first bearing 13A and the second bearing 13B are, for example, ball bearings.

[0017] The motor housing 2 accommodates a rotor 11 and a stator 12 therein. As shown in Figs. 2 and 3, the motor housing 2 has a first motor housing 2A and a second motor housing 2B. The first motor housing 2A is cylindrical and opens upward to accommodate at least a part of the drive source unit 3. The second motor housing 2B is disposed opposite the upper side of the first motor housing 2A, opens downward, and is cylindrical and accommodates at least a part of the rotation detection unit 4. The first motor housing 2A and the second motor housing 2B are, for example, single members different from each other. The first motor housing 2A and the second motor housing 2B are made by die casting, for example.

[0018] The first motor housing 2A has a bottom 21, a cylindrical portion 22, and a first flange portion 23. The bottom 21 is located below the stator 12. The bottom 21 has, for example, a circular shape centered on the central axis J when viewed in the axial direction. The bottom 21 has a hole 21a that penetrates in the axial direction. The first bearing 13A is disposed in the hole 21a. As a result, the bottom 21 holds the first bearing 13A. The shaft 11A passes through the hole 21a.

[0019] The cylindrical portion 22 is located radially outside the stator 12. The cylindrical portion 22 extends upward from the radial outer circumferential edge of the bottom portion 21, for example. The cylindrical portion 22 is, for example, cylindrical about the central axis J. The cylindrical portion 22 opens upward. The stator core 12A is fixed to the cylindrical portion 22. The outer circumferential surface of the stator core 12A is in contact with the inner circumferential surface of the cylindrical portion 22.

[0020] The cylindrical portion 22 has a first through portion 24 that radially penetrates the cylindrical portion 22 on the opening side. The first through portion 24 opens to the upper side. The first through portion 24 is an opening that connects the inside of the first motor housing 2A to the outside of the motor 1. A first wiring 34 connected to the bus bar 32 is passed through the first through portion 24.

[0021] The first through-hole 24 is located opposite to the drawn-out portion of the first wiring 34 in the axial direction. A first wiring support member 30 described later is fitted into the first through-hole 24. As shown in FIG. 2, FIG. 4, and FIG. 5, the first through-hole 24 has a pair of side surfaces 24a extending in the up-down direction Y and facing each other in the circumferential direction, and an upper surface 24b connecting the lower ends of the pair of side surfaces 24a. The upper surface 24b protrudes radially outward from the outer circumferential surface of the cylindrical portion 22. As shown in FIG. 6, the upper surface 24b has a recess 24c in which a radially inner portion is recessed downward from a radially outer portion. A lower protrusion 30f of the first wiring support member 30 is fitted into the recess 24c. As shown in FIG. 2 and FIG. 3, the first through-hole 24 is provided at a position at approximately the same height as a bus bar holder 31 described later in the up-down direction Y.

[0022] As shown in FIG. 7, the first flange portion 23 expands and protrudes radially outward from the upper open end of the cylindrical portion 22. The first flange portion 23 has a plurality of (three in this embodiment) enlarged diameter portions 23A spaced at predetermined intervals in the circumferential direction. One of the three enlarged diameter portions 23A extends in a direction parallel to an imaginary line K1 connecting a portion where the first wiring support member 30 and the second wiring support member 40 intersect with the central axis J of the rotor 11, as viewed from the axial direction, and in a direction in which the first wiring support member 30 and the second wiring support member 40 are disposed. In this embodiment, the portion where the first wiring support member 30 and the second wiring support member 40 intersect with each other, as viewed from the axial direction, is taken as an intersection point P, for example.

[0023] As shown in Fig. 1, a second flange portion 28 of the second motor housing 2B, which will be described later, is joined from above to the upper surface of the first flange portion 23. As shown in Fig. 7, the first flange portion 23 has three enlarged diameter portions 23A spaced apart in the circumferential direction. The enlarged diameter portions 23A have a first through hole 23a that penetrates in the axial direction. The first through hole 23a has an internal thread on its inner surface. The first motor housing 2A and the second motor housing 2B are fixed together by fastening a fixing member 25 into the first through hole 23a.

[0024] 7, one of the multiple first through holes 23a (first through hole 23aA) is disposed at a position adjacent to the right side (opposite the second through portion 29 side of the second motor housing 2B described later) of the first through portion 24 in the circumferential direction. The other two through holes 23a (first through holes 23aB, 23aC) are positioned on the opposite side of the central axis J of the rotor 11 from the first wiring support member 30 and the second wiring support member 40.

[0025] As shown in Figures 2 and 3, the second motor housing 2B is separate from the first motor housing 2A. The second motor housing 2B is fixed to the upper end of the first motor housing 2A. The second motor housing 2B has a top wall portion 26, a peripheral wall portion 27, and a second flange portion 28. The top wall portion 26 is located above the rotor 11 and the stator 12. The top wall portion 26 covers the entire rotor 11 and the stator 12 from above, except for a portion of the shaft 11A.

[0026] The top wall portion 26 has, for example, a circular shape centered on the central axis J when viewed in the axial direction. As shown in FIG. 3, the second bearing 13B is arranged on the lower surface side of the top wall portion 26 on the radially inner side. As a result, the second motor housing 2B holds the second bearing 13B. The top wall portion 26 covers the outer ring of the second bearing 13B. The top wall portion 26 is provided with a central hole 26b penetrating in the axial direction. The shaft 11A passes through the central hole 26b.

[0027] The peripheral wall portion 27 is, for example, cylindrical and extends downward from the outer peripheral edge portion on the radial outside of the top wall portion 26. The peripheral wall portion 27 has a second through-portion 29 penetrating therethrough in the radial direction. As shown in Figs. 4 and 5, the second through-portion 29 opens downward. The second through-portion 29 is an opening portion that connects the inside of the second motor housing 2B to the outside of the motor 1. As shown in Figs. 1 and 7, a second wiring 41 that transmits an electrical signal for detecting the rotational position of the rotor 11 is passed through the second through-portion 29.

[0028] The second through-hole 29 is positioned to face the lead-out portion of the second wiring 41 in the axial direction. A second wiring support member 40, which will be described later, is fitted into the second through-hole 29. As shown in FIG. 2 and FIG. 5, the second through-hole 29 has a pair of side surfaces 29a extending in the vertical direction Y and facing each other in the circumferential direction, and a lower surface 29b connecting the upper ends of the pair of side surfaces 29a. The second through-hole 29 is provided at a position at approximately the same height as a resolver stator 43 of the rotation detection unit 4, which will be described later, in the vertical direction Y. As shown in FIG. 5, the second through-hole 29 overlaps with the first through-hole 24 in a part of the circumferential direction when viewed from the axial direction. The side surface 29a of the second through-hole 29 is located to the right of the side surface 24a of the first through-hole 24.

[0029] The second flange portion 28 expands and protrudes radially outward from the open end portion on the lower side of the peripheral wall portion 27. The second flange portion 28 has a plurality of (three in this embodiment) enlarged diameter portions 28A at predetermined intervals in the circumferential direction at a position overlapping with the first flange portion 23 in the up-down direction Y. The second flange portion 28, enlarged diameter portions 28A, and second through holes 28a described later shown in Fig. 7 are shown by virtual lines because they are provided at the same positions and have the same shapes as the first flange portion 23, enlarged diameter portions 23A, and first through holes 23a, respectively, when viewed in the axial direction.

[0030] The first flange portion 23 of the first motor housing 2A is joined from below to the lower surface of the second flange portion 28. The second flange portion 28 has three enlarged diameter portions 28A spaced apart in the circumferential direction. The enlarged diameter portions 28A have second through holes 28a penetrating in the axial direction. The second through holes 28a are provided with female threads on their inner surfaces. The second flange portion 28 is fixed to the first flange portion 23 by a fixing member 25 that connects the first motor housing 2A and the second motor housing 2B. The fixing member 25 is fastened to the second through hole 28a in a state where the second through hole 28a is coaxially aligned with the first through hole 23a of the first flange portion 23.

[0031] One of the multiple second through holes 28a (second through hole 28aA) is disposed at a position adjacent to the right side of the second through portion 29 (the right side of the first through portion 24 of the first motor housing 2A) in the circumferential direction. The other two second through holes 28a (second through holes 28aB, 28aC) are positioned on the opposite side of the central axis J of the rotor 11 from the first wiring support member 30 and the second wiring support member 40.

[0032] 8, the lower surface of the second flange portion 28 has a circumferentially extending recessed groove 28b in a portion where the second through hole 28aA adjacent to the first wiring support member 30 is disposed. The upper protrusion 30e of the first wiring support member 30 is fitted into the recessed groove 28b.

[0033] In this embodiment, the first motor housing 2A and the second motor housing 2B are fixed to each other by coaxially positioning the first through hole 23a provided in the first flange portion 23 and the second through hole 28a provided in the second flange portion 28 and tightening a fixing member 25 into the through holes 23a, 28a.

[0034] As shown in Fig. 3, the driving source unit 3 is located above the stator 12. The driving source unit 3 has a terminal 32B connected to a control device (not shown) via a first wiring 34, and a connection portion (not shown) connected to an end of the coil 12B. The driving source unit 3 supplies AC current supplied from the control device to each coil 12B. The driving source unit 3 has an elastically deformable first wiring support member 30 that holds the first wiring 34. The first wiring 34 passes through the first through portion 24 and is drawn out to the outside of the first motor housing 2A.

[0035] 2 and 3, driving source unit 3 has bus bar holder 31 made of resin, and a plurality of bus bars 32 embedded in bus bar holder 31. The plurality of bus bars 32 are embedded in bus bar holder 31 by insert molding. Bus bar holder 31 is made of an insulating resin material.

[0036] The bus bar holder 31 is a resin member that holds the bus bar 32. The bus bar holder 31 is attached to the upper side of the stator 12. The bus bar holder 31 is accommodated in the first motor housing 2A.

[0037] The bus bar 32 is electrically connected to the stator 12 inside the first motor housing 2A. The bus bar 32 is made of a metal material having high conductivity (for example, a copper-based alloy). The bus bar 32 is in a plate shape. The bus bar 32 is formed by pressing a plate material.

[0038] 1 and 2, the first wiring support member 30 is fitted into the first through-hole 24. The first wiring support member 30 is supported between an upper surface 24b (bottom) of the first through-hole 24 and the lower end surface 2b of the second motor housing 2B. The first wiring support member 30 is made of an elastically deformable material such as rubber, foamed resin, or the like.

[0039] The first wiring support member 30 is provided with a plurality of insertion holes 30d through which the first wiring 34 is inserted in a direction perpendicular to the axial direction. The plurality of insertion holes 30d are provided at intervals in the circumferential direction. The plurality of insertion holes 30d are disposed at a position approximately at the center of the first wiring support member 30 in the up-down direction Y. The inner diameter of the insertion hole 30d is the same as or slightly smaller than the outer diameter of the first wiring 34. The first wiring support member 30 is divided into two at a position approximately at the center in the up-down direction Y. The division position of the first wiring support member 30 is a position that also divides the insertion hole 30d in the up-down direction Y.

[0040] The first wiring support member 30 has an upper surface 30a that faces the second motor housing 2B in the axial direction. The upper surface 30a is fitted between the lower end surface 2b of the second motor housing 2B. As shown in FIG. 8, the upper surface 30a has an upper convex portion 30e that protrudes toward one axial side and extends in the circumferential direction. The lower end surface 2b of the second motor housing 2B has a concave groove 28b that is recessed toward one axial side and extends in the circumferential direction. The upper convex portion 30e is fitted into the concave groove 28b of the second motor housing 2B. Also, as shown in FIG. 6, the first wiring support member 30 has an upper surface 24b of the first through portion 24 in the first motor housing 2A and a lower surface 30b that faces the upper surface 24b in the axial direction. The upper surface 24b has a concave portion 24c that is recessed toward the other axial side and extends in the circumferential direction. The lower surface 30b has a lower convex portion 30f that protrudes toward the other axial side and extends in the circumferential direction. The lower convex portion 30f is fitted into the concave portion 24c of the upper surface 24b of the first penetrating portion 24.

[0041] 5, the first wiring support member 30 partially overlaps with the second wiring support member 40 in the circumferential direction when viewed in the axial direction. That is, the left end portion 30g of the first wiring support member 30 is located to the left of the right end portion 40e of the second wiring support member 40 in the circumferential direction.

[0042] As shown in FIG. 4 and FIG. 8, the first wiring support member 30 has a step portion 30c recessed in the axial direction in a portion facing the second wiring support member 40 in the axial direction. The step portion 30c is located at the left end of the upper surface 30a of the first wiring support member 30. As shown in FIG. 5, the step portion 30c is recessed axially downward from the axial opening edge 24d of the first through portion 24. The opening edge 24d of the first through portion 24 is located on the upper end surface 2a of the first motor housing 2A. When the first wiring support member 30 is disposed in the first through portion 24 and the second motor housing 2B is not attached, the upper surface 30a of the first wiring support member 30 is located above the upper end surface 2a of the first motor housing 2A. When the second motor housing 2B is attached, the first wiring support member 30 is pressed downward by the lower end surface 2b of the second motor housing 2B, so that the position of the upper surface 30a is the same as the position of the upper end surface 2a of the first motor housing 2A. The step portion 30c is located below the upper end surface 2a of the first motor housing 2A when compressed in the vertical direction.

[0043] As shown in FIG. 2 and FIG. 3, the rotation detection unit 4 can detect the rotation of the rotor 11. The rotation detection unit 4 is located, for example, inside the second motor housing 2B and above the drive source unit 3. In this embodiment, the rotation sensor 4A of the rotation detection unit 4 is a resolver. The rotation sensor 4A has a resolver rotor 42 and a resolver stator 43. The resolver rotor 42 is fixed to the outer circumferential surface of the shaft 11A. The resolver stator 43 is located radially outside the resolver rotor 42. The resolver stator 43 is annular and surrounds the resolver rotor 42. The resolver stator 43 is fixed, for example, to the lower surface of the top wall portion 26 of the second motor housing 2B. The rotation detection unit 4 has a second wiring support member 40 having a plurality of terminals (not shown). The second wiring 41 is connected to each of the plurality of terminals.

[0044] The resolver stator 43 has a coil 43a. When the resolver rotor 42 rotates together with the shaft 11A, an induced voltage is generated in the coil of the resolver stator 43 according to the circumferential position of the resolver rotor 42. The rotation detection unit 4 can detect the rotation of the resolver rotor 42 and the shaft 11A based on a change in the induced voltage generated in the coil of the resolver stator 43. This allows the rotation detection unit 4 to detect the rotation of the rotor 11.

[0045] The second wiring support member 40 is provided at a part of the circumferential direction of the resolver stator 43 of the rotation detection unit 4. The second wiring support member 40 protrudes from the resolver stator 43 toward the radially outward direction. The second wiring support member 40 is fitted into the second through-hole 29 of the second motor housing 2B. As shown in FIG. 1, the second wiring 41 is drawn out to the outside of the second motor housing 2B through the second through-hole 29. As shown in FIG. 5, the second wiring support member 40 is supported between the lower surface 29b of the second through-hole 29 and the upper end surface 2a of the first motor housing 2A. When viewed from the radial direction, the axial position of the lower end 40a of the second wiring support member 40 approximately coincides with the axial position of the upper surface 30a of the first wiring support member 30. 1 and 2, when the second wiring support member 40 is fitted into the second through-hole 29, a tip portion 40c protrudes radially outward beyond the peripheral wall portion 27 of the second motor housing 2B. The second wiring support member 40 is a member having a rigidity greater than at least the first wiring support member 30. The second wiring support member 40 is made of, for example, resin.

[0046] As shown in FIG. 2, the second wiring support member 40 has terminals (not shown) to which a plurality of second wirings 41 are connected. The terminals are electrically connected to the resolver stator 43 by the second wirings 41. The second wirings 41 are connected to terminals of the second wiring support member 40. The second wiring support member 40 is provided with a plurality of insertion holes 40d through which the second wirings 41 are inserted in a direction perpendicular to the axial direction. As shown in FIG. 5, the plurality of insertion holes 40d are provided at intervals in the circumferential direction. The plurality of insertion holes 40d are arranged at approximately the center in the up-down direction Y. The inner diameter of the insertion holes 40d is the same as or slightly smaller than the outer diameter of the second wirings 41.

[0047] 7, in the first wiring support member 30, a line connecting the circumferential center C1 of the first wiring support member 30 and the central axis J when viewed in the axial direction is defined as a first line L1. In addition, in the second wiring support member 40, a line connecting the circumferential center C2 of the second wiring support member 40 and the central axis J when viewed in the axial direction is defined as a second line L2. The angle θ1 between the first line L1 and the second line L2 is, for example, approximately 50 degrees. The angle θ1 is preferably 50 degrees to 70 degrees.

[0048] In this embodiment, the motor housing has a cylindrical first motor housing 2A that opens upward and accommodates at least a part of the drive source unit 3, and a cylindrical second motor housing 2B that is disposed opposite to the upper side of the first motor housing 2A, opens downward, and accommodates at least a part of the rotation detection unit 4. The first motor housing 2A has a first through-portion 24 that penetrates the cylindrical portion 22 of the first motor housing 2A in the radial direction and opens upward. The second motor housing 2B has a second through-portion 29 that penetrates the peripheral wall portion 27 of the second motor housing 2B in the radial direction and opens downward. Therefore, the first wiring 34 can be drawn out to the outside of the first motor housing 2A through the first through-portion 24. The second wiring 41 can be drawn out to the outside of the second motor housing 2B through the second through-portion 29. With this configuration, the first motor housing 2A and the second motor housing 2B can each have the through-portions 24 and 29 in accordance with the axial arrangement in the internal structure. That is, the first through-hole 24 and the second through-hole 29 can be provided in accordance with the take-out position of the first wiring 34 in the drive source unit 3 and the take-out position of the second wiring 41 in the rotation detection unit 4, respectively. The first wiring 34 and the second wiring 41 can be taken out to the outside through the through-holes 24, 29 at their original heights without having to adjust the heights inside the motor housing 2. This makes it possible to simplify the wiring that is housed inside the motor housing 2 and led to the take-out points (the first wiring support member 30 and the second wiring support member 40) and the structure that holds them. In this embodiment, the structure of the motor 1 is not complicated, and therefore manufacturing costs can be reduced.

[0049] Moreover, according to this embodiment, the drive source unit 3 has an elastically deformable first wiring support member 30 that holds the first wiring 34. The first wiring support member 30 is fitted into the first through-hole 24. This allows the force and impact received from the second motor housing 2B to be effectively absorbed by the elastic deformation of the first wiring support member 30. Therefore, the force and impact from the second motor housing 2B applied to the first wiring 34 passing through the first wiring support member 30 are reduced, so that the first wiring 34 can be protected.

[0050] According to the present embodiment, the rotation detection unit 4 has a second wiring support member 40 that holds the second wiring 41. The second wiring support member 40 is disposed in the second through-hole 29. A part of the first wiring support member 30 and a part of the second wiring support member 40 face each other in the axial direction. A step portion 30c that is recessed in the axial direction is provided in a part of the first wiring support member 30 that faces the second wiring support member 40 in the axial direction. Therefore, when the first motor housing 2A and the second motor housing 2B are assembled, the first wiring support member 30 is crushed in the axial direction by elastic deformation. The step portion 30c of the first wiring support member 30 that is elastically deformed in the axial direction is lower than the upper end surface 2a of the first motor housing 2A, so that contact between the first wiring support member 30 and the second wiring support member 40 can be prevented. This makes it possible to suppress the force that the second wiring support member 40 receives from the first wiring support member 30. Therefore, it is possible to prevent damage to the second wiring support member 40 due to impact.

[0051] Furthermore, according to this embodiment, the step portion 30c is recessed in the axial direction further than the axial opening edge of the first penetrating portion 24. In such a configuration, even if the second wiring support member 40 enters inside the opening edge of the first penetrating portion 24, the step portion 30c of the first wiring support member 30 can more reliably prevent the second wiring support member 40 from contacting the first wiring support member 30.

[0052] Further, according to this embodiment, the first wiring support member 30 is supported between the upper surface 24b of the first through portion 24 and the lower end surface 2b of the second motor housing 2B. The second wiring support member 40 is supported between the upper portion of the second through portion 29 and the upper end surface 2a of the first motor housing 2A. The first wiring support member 30 and the second wiring support member 40 are fixed in the axial direction, and the axial movement of the first wiring support member 30 and the second wiring support member 40 is suppressed. Therefore, contact between the first wiring support member 30 and the second wiring support member 40 can be prevented. This can suppress the application of force from the first wiring support member 30 to the second wiring support member 40.

[0053] Furthermore, according to this embodiment, the first through portion 24 and the second through portion 29 at least partially overlap when viewed in the axial direction. Therefore, the first wiring support member 30 that fits into the first through portion 24 and the second wiring support member 40 that fits into the second through portion 29 can be arranged together in the circumferential direction. This makes it possible to reduce the arrangement area for the first wiring support member 30 and the second wiring support member 40. Therefore, the wiring lead-out structure can be simplified.

[0054] Furthermore, according to this embodiment, the first wiring support member 30 and the second wiring support member 40 at least partially overlap when viewed in the axial direction. Therefore, the first wiring support member 30 and the second wiring support member 40 can be arranged more concentrated in the circumferential direction. This makes it possible to reduce the arrangement area of ​​the first wiring support member 30 and the second wiring support member 40. Therefore, the wiring lead-out structure can be made simpler.

[0055] According to this embodiment, the first motor housing 2A has a first flange portion 23 that spreads outward in the radial direction from the opening edge in the axial direction. The second motor housing 2B has a second flange portion 28 that spreads outward in the radial direction from the opening edge in the axial direction. The first flange portion 23 has a plurality of first through holes 23a that penetrate in the axial direction. The second flange portion 28 has a plurality of second through holes 28a that penetrate in the axial direction. The first flange portion 23 and the second flange portion 28 have a plurality of fixing members 25 that pass through the first through holes 23a and the second through holes 28a that face each other in the axial direction. At least one of the plurality of fixing members 25 is adjacent to the side of the first wiring support member 30 opposite to the side where the second wiring support member 40 is arranged in the circumferential direction. The other fixing members 25 are located on the opposite side of the first wiring support member 30 and the second wiring support member 40 with respect to the central axis J of the rotor 11. This allows the plurality of fixing members 25 to be arranged in a balanced manner by being evenly close to each other in the circumferential direction of the motor 1. Therefore, the first motor housing 2A and the second motor housing 2B can be fixed together in an appropriate manner. Also, the motor 1 can be provided with a stable strength against an external load.

[0056] According to this embodiment, as shown in FIG. 7, the first flange portion 23 and the second flange portion 28 have enlarged diameter portions 23A and 28A that extend in a direction parallel to a virtual line K1 connecting the intersection of the first wiring support member 30 and the second wiring support member 40 with the central axis J of the rotor 11 as viewed from the axial direction, and in a direction in which the first wiring support member 30 and the second wiring support member 40 are disposed. The fixing member 25 is disposed in the enlarged diameter portions 23A and 28A. In this configuration, the first flange portion 23 and the second flange portion 28 do not significantly protrude outward from the tangent line of the first motor housing 2A and the second motor housing 2B in a direction parallel to the virtual line K1 as viewed from the axial direction. Therefore, the motor 1 can be prevented from becoming large in size in the radial direction. Furthermore, the fixing structure between the first motor housing 2A and the second motor housing 2B can be a fixing structure that is uniform in the circumferential direction.

[0057] According to the present embodiment, the angle θ between the first line L1 connecting the circumferential center C1 of the first wiring support member 30 and the central axis J and the second line L2 connecting the circumferential center C2 of the second wiring support member 40 and the central axis J is set to 50 degrees to 70 degrees. If the angle θ is small and the area where the first wiring support member 30 and the second wiring support member 40 overlap in the axial direction becomes too large, a force is likely to be applied from the elastically deformable first wiring support member 30 to the second wiring support member 40, and the second wiring support member 40 may tilt. Therefore, by setting the angle θ to 50 degrees or more, the area where the first wiring support member 30 and the second wiring support member 40 overlap in the circumferential direction can be prevented from becoming large, and the force applied from the first wiring support member 30 to the second wiring support member 40 can be prevented from being applied. Therefore, the tilt of the second wiring support member 40 can be prevented. Furthermore, if the angle θ exceeds 70 degrees, the first wiring support member 30 and the second wiring support member 40 will not overlap and will be too far apart in the circumferential direction, resulting in an increase in the radial size of the motor 1. Therefore, by setting the angle θ to be between 50 degrees and 70 degrees, the first wiring support member 30 and the second wiring support member 40 can be disposed in an appropriate manner in terms of structure and manufacturing costs.

[0058] According to the present embodiment, the first wiring support member 30 has an upper surface 30a that faces the second motor housing 2B in the axial direction. The upper surface 30a has an upper convex portion 30e that protrudes toward one axial side and extends in the circumferential direction. The lower end surface 2b of the second motor housing 2B has a concave groove 28b that is recessed toward one axial side and extends in the circumferential direction. The upper convex portion 30e and the concave groove 28b are fitted together. In this configuration, the fitting strength of the first wiring support member 30 with respect to the first through portion 24 can be increased. Therefore, even if a tensile force is applied to the first wiring 34, the first wiring support member 30 can be prevented from slipping out of the first through portion 24 and from falling off.

[0059] According to the present embodiment, the first wiring support member 30 has a lower surface 30b that faces the first through portion 24 in the axial direction. The lower surface 30b has a lower convex portion 30f that protrudes toward the other axial side and extends in the circumferential direction. The upper surface 24b of the first through portion 24 has a concave portion 24c that is recessed toward the other axial side and extends in the circumferential direction. The lower convex portion 30f and the concave portion 24c are fitted together. In this configuration, the fitting strength of the first wiring support member 30 to the first through portion 24 can be increased. Therefore, even if a tensile force is applied to the first wiring 34, the first wiring support member 30 can be prevented from slipping out of the first through portion 24 and falling off.

[0060] Furthermore, according to this embodiment, the rotation detection unit 4 is located above the drive source unit 3. In this case, the second wiring 41 of the rotation detection unit 4 is disposed above the first wiring 34 of the drive source unit 3, and the first through-hole 24 and the second through-hole 29 can be positioned in the same vertical position. Therefore, the wiring can be pulled out from each of the through-holes 24, 29 in accordance with the positions of the drive source unit 3 and the rotation detection unit 4, and the wiring housed inside the motor housing 2 and led to the pull-out location and the structure for holding the wiring can be further simplified.

[0061] Furthermore, according to this embodiment, as shown in FIG. 3, the upper end of the first wiring support member 30 is located above (on one axial side) the lower end of the rotation detection unit 4. In this configuration, the opening area of ​​the first through-portion 24 of the first motor housing 2A can be prevented from increasing in the axial direction. This can prevent the rigidity of the first motor housing 2A from decreasing. In other words, it can prevent the strength of the first motor housing 2A from decreasing due to the first through-portion 24 becoming larger in the axial direction, as in the case where the upper end of the first wiring support member 30 is located below the lower end of the rotation detection unit 4.

[0062] As described above, according to this embodiment, in the motor 1, the wiring lead-out structure can be further simplified.

[0063] Although the embodiments of the present invention have been described above, each configuration and their combinations in the embodiments are merely examples, and addition, omission, substitution, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments.

[0064] For example, as shown in FIG. 9, in a motor 1A according to another embodiment, at least one third fixing member 25C among the multiple fixing members 25 is located between the first wiring support member 30 and the second wiring support member 40 in the circumferential direction. The other fixing member 25D is located on the opposite side of the central axis J of the rotor 11 from the first wiring support member 30 and the second wiring support member 40. The angle θ2 between the first line L1 and the second line L2 is, for example, approximately 70 degrees. In this configuration, the multiple fixing members 25 can be arranged in a balanced manner by being evenly close to each other in the circumferential direction of the motor 1. Therefore, the first motor housing 2A and the second motor housing 2B can be preferably fixed to each other. In addition, the motor 1 can be provided with stable strength against external loads.

[0065] The fixing member 25 may be adjacent to the second wire support member 40 on the side opposite (left side) to the side on which the first wire support member 30 is disposed.

[0066] The use of the motor to which the present invention is applied is not particularly limited. The motor may be mounted on equipment other than equipment mounted on a vehicle. The direction in which the central axis of the motor extends is not particularly limited, and may be vertical as in this embodiment, or may be inclined with respect to both the horizontal and vertical directions. The configurations and methods described above in this specification can be appropriately combined within a range that does not contradict each other. [Explanation of symbols]

[0067] Reference Signs List 1, 1A...motor, 2...motor housing, 2A...first motor housing, 2B...second motor housing, 3...driving source unit, 4...rotation detection unit, 11...rotor, 12...stator, 23...first flange portion, 23a...first through hole, 22...cylindrical portion, 23A...expanded diameter portion, 24...first through portion, 24b...upper surface, 24c...recess, 25...fixing member, 27...peripheral wall portion, 28...second flange portion, 28a...second through hole, 29...second through portion, 29b...lower surface, 30...first wiring support member, 30c...step portion, 32...bus bar, 34...first wiring, 40...second wiring support member, 41...second wiring, K1...imaginary line, J...center axis

Claims

1. A rotor rotatable about a central axis; a stator having a plurality of coils and radially opposed to the rotor; a driving source unit having a first wiring electrically connected to the coil; a rotation detection unit having a rotation sensor capable of detecting rotation of the rotor and a second wiring electrically connected to the rotation sensor; a motor housing that accommodates the rotor, the stator, the drive source unit, and the rotation detection unit therein, The motor housing includes: a cylindrical first motor housing that opens to one axial side and accommodates at least a portion of the drive source unit; a cylindrical second motor housing that is disposed opposite one axial side of the first motor housing, opens to the other axial side, and accommodates at least a portion of the rotation detection unit, the first motor housing has a first through-portion that radially penetrates a peripheral wall portion of the first motor housing and opens to one side in the axial direction, the second motor housing has a second through-portion that radially penetrates a peripheral wall portion of the second motor housing and opens to the other axial side, the first wiring is led out to the outside of the first motor housing through the first through-hole, The second wiring is led out to the outside of the second motor housing through the second through-hole, the driving source unit has a first wiring support member that holds the first wiring, the first wiring support member is fitted into the first through-portion, the rotation detection unit has a second wire support member that holds the second wire, the second wiring support member is fitted into the second penetration portion, A portion of the first wiring support member and a portion of the second wiring support member face each other in an axial direction.

2. A motor as described in claim 1, wherein the first wiring support member is elastically deformable.

3. A motor as described in claim 1 or 2, wherein a portion of the first wiring support member that axially faces the second wiring support member is provided with a step portion that is recessed in the axial direction.

4. The motor according to claim 3 , wherein the step portion is recessed in the axial direction from an axial opening edge of the first through portion.

5. the first wiring support member is supported between a bottom portion of the first penetration portion and a lower end surface of the second motor housing, The motor according to claim 1 , wherein the second wiring support member is supported between an upper portion of the second penetration portion and an upper end surface of the first motor housing.

6. The motor according to claim 1 , wherein the first through portion and the second through portion at least partially overlap each other when viewed in the axial direction.

7. The motor according to claim 1 , wherein the first wiring support member and the second wiring support member at least partially overlap each other when viewed in the axial direction.

8. The first motor housing has a first flange portion extending radially outward from an axial opening edge, the second motor housing has a second flange portion extending radially outward from an axial opening edge, The first flange portion has a plurality of first through holes extending therethrough in an axial direction, The second flange portion has a plurality of second through holes extending therethrough in the axial direction, The rotor further includes a plurality of fixing members that are inserted through the first through hole and the second through hole that are opposed to each other in the axial direction, at least one of the plurality of fixing members is adjacent to the first wiring support member on a side opposite to a side on which the second wiring support member is arranged, or adjacent to the second wiring support member on a side opposite to a side on which the first wiring support member is arranged, in a circumferential direction; The motor according to claim 1 , wherein another fixing member is located on an opposite side to the first wiring support member and the second wiring support member with respect to a central axis of the rotor.

9. the first flange portion and the second flange portion have an expanded diameter portion that extends in a direction parallel to an imaginary line connecting a portion where the first wiring support member and the second wiring support member intersect with a central axis of the rotor as viewed in the axial direction and toward a direction in which the first wiring support member and the second wiring support member are arranged, The motor according to claim 8 , wherein the fixing member is disposed on the enlarged diameter portion.

10. The first motor housing has a first flange portion extending radially outward from an axial opening edge, the second motor housing has a second flange portion extending radially outward from an axial opening edge, The first flange portion has a plurality of first through holes extending therethrough in an axial direction, The second flange portion has a plurality of second through holes extending therethrough in the axial direction, The rotor further includes a plurality of fixing members that are inserted through the first through hole and the second through hole that are opposed to each other in the axial direction, At least one of the plurality of fixing members is located between the first wiring support member and the second wiring support member in a circumferential direction, The motor according to claim 1 , wherein another fixing member is located on an opposite side to the first wiring support member and the second wiring support member with respect to a central axis of the rotor.

11. 11. The motor according to claim 1, wherein an angle between a first line connecting a circumferential center of the first wiring support member and a central axis of the rotor and a second line connecting a circumferential center of the second wiring support member and the central axis of the rotor is 50 degrees to 70 degrees.

12. the first wiring support member has an upper surface that faces the second motor housing in the axial direction, The upper surface has an upper convex portion that protrudes toward one axial side and extends in a circumferential direction, The lower surface of the second motor housing has a recessed groove recessed toward one side in the axial direction and extending in a circumferential direction, The motor according to claim 1 , wherein the upper convex portion and the concave groove are fitted together.

13. the first wiring support member has a lower surface that faces the first penetrating portion in the axial direction, The lower surface has a lower convex portion that protrudes toward the other axial side and extends in a circumferential direction, An upper surface of the first penetrating portion has a recessed portion recessed toward the other axial side and extending in a circumferential direction, The motor according to claim 1 , wherein the lower convex portion and the concave portion are fitted together.

14. The motor according to claim 13 , wherein the rotation detection unit is located on one axial side of the drive source unit.

15. The motor according to claim 1 , wherein an upper end of the first wiring support member is located on one axial side of a lower end of the rotation detection unit.

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