JP2009219283A - Motor assembling apparatus and motor assembling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor assembling apparatus which can easily assemble a motor, having a housing of such a structure that one end is closed and only the other end is opened, even if a magnetic force acts between a rotor and a stator, and to provide a method of assembling a motor. <P>SOLUTION: A stator 30 is fastened to a cap 50, and then a rotating shaft 10 is fastened to the cap 50, while the other end of the rotating shaft 10, with a rotor 20 fastened thereto, is pivoted to the cap 50; and thereafter, the cap 50 to which the rotating shaft 10, the rotor 20, and the stator 30 are fastened is fastened to a housing 40, to assemble an in-wheel motor 1 equipped with the rotating shaft 10, the rotor 20, the stator 30, the housing 40, and the cap 50. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to an apparatus and method for assembling an electric motor.
More specifically, the present invention relates to a technique for preventing a rotor and a stator from being attracted by magnetic force when an electric motor is assembled.

Conventionally, an electric motor is assembled by housing a rotor and a stator in a housing. However, in many electric motors, one of the rotor and the stator, which is a member constituting the electric motor, is made of a ferromagnetic material (permanent magnet or other influence of an external magnetic field). Because the other is made of a paramagnetic material (a material that is magnetized by the influence of an external magnetic field, such as many steel materials), a magnetic force acts between the rotor and the stator. To do.
Therefore, the rotor and stator may be attracted by magnetic force when the electric motor is assembled, and the rotor, stator or housing may be damaged.
In addition, when the magnetic force acting between the rotor and the stator is large, it interferes with the centering work (work for matching the center line of the rotor housed in the housing with the center line of the stator) performed at the time of assembling the motor. May result.

  In particular, in recent years, magnets that generate a strong magnetic force, such as neodymium magnets, are used for rotors or stators in order to reduce the size and output of electric motors, and the gap between the assembled rotor and stator tends to be reduced. For this reason, the rotor and the stator are easily attracted by magnetic force during assembly work.

As a method for solving such a problem caused by the magnetic force acting between the rotor and the stator, a method of assembling an electric motor using a centering shaft and a movable carriage is known.
The centering shaft used in this method is composed of a pair of columnar members, and the pair of columnar members are fixed to the support base with their center lines aligned with each other and spaced apart from each other by a predetermined distance. The
The distance between the pair of columnar members constituting the centering shaft is substantially the same as the length of the rotor rotation shaft, and both ends of the rotor rotation shaft are respectively connected to the pair of columnar members constituting the centering shaft. Fixed and supported. When the rotation shaft of the rotor is fixed to the centering shaft, the center line of the rotor rotation shaft and the center line of the centering shaft are aligned.
Further, the movable carriage used in this method is movable in the longitudinal direction of the centering shaft (the direction of the center line of the centering shaft), and a housing in which a stator is accommodated is fixed to the movable carriage.

  The method of assembling the electric motor using the centering shaft and the movable carriage is as follows: (1) a step of penetrating the housing in which the stator is housed in one of a pair of columnar members constituting the centering shaft; (2) a step of fixing the housing in which the stator is accommodated to the moving carriage, (3) a step of fixing both ends of the rotating shaft of the rotor to the centering shaft, and (4) a length of the centering shaft of the moving carriage. Moving in a direction. For example, as described in Patent Document 1.

However, the method described in Patent Document 1 uses any of a pair of cylindrical members constituting a centering shaft to maintain the posture of the rotor and the stator against the magnetic force acting between the rotor and the stator. And a step of penetrating a housing in which the stator is accommodated in one of a pair of cylindrical members constituting the centering shaft, and the structure (support base) having sufficient rigidity must be fixed. As a precondition for the realization, it is necessary that the housing of the electric motor has a structure in which both ends are opened.
Therefore, the method described in Patent Document 1 has a problem that it cannot be applied to the assembly of an electric motor having a housing having a structure in which one end of a housing in which a stator is accommodated is closed and only the other end is opened.

As a method of assembling an electric motor having a housing having a structure in which one end of a housing in which a stator is accommodated is closed and only the other end is opened, a method using an insertion assisting jig is known.
The insertion auxiliary jig used in this method is a ring-shaped member, and a through hole is formed at the center thereof, and the diameter (inner diameter) of the through hole is substantially the same as the diameter (outer diameter) of the stator. Therefore, the stator can slide along the insertion auxiliary jig while the outer peripheral surface of the stator is in contact with the inner peripheral surface of the insertion auxiliary jig.
The method of assembling the electric motor using the insertion assisting jig includes (1) a step of pivotally supporting one end of the rotating shaft to which the rotor is fixed on one end (the closed end) of the housing, and (2) A step of holding the other end of the rotating shaft to which the rotor is fixed; and (3) the insertion auxiliary jig is connected to the other end (opening) of the housing in a state where the center line of the insertion auxiliary jig and the center line of the housing are aligned. And (4) a stator by sliding the stator along the insertion auxiliary jig while bringing the outer peripheral surface of the stator into contact with the inner peripheral surface of the insertion auxiliary jig. Inserting into the housing. For example, as described in Patent Document 2.

  However, in the method described in Patent Document 2, the center line of the insertion assisting jig and the center line of the housing are aligned with each other when the insertion assisting jig is disposed at the other end of the housing (the open end). A specific configuration for securing the state is not disclosed.

Further, the insertion auxiliary jig in the method described in Patent Document 2 is in contact with the outer peripheral surface of the stator, and the other end (end portion on the opening side of the housing) of the rotating shaft to which the rotor is fixed is another member (holding device). Therefore, in order to avoid interference with the insertion auxiliary jig and the holding device, it is necessary to insert the stator into the housing while only the upper end of the stator is supported.
Therefore, when the weight of the stator is large, it is difficult to handle and the workability is not good.
JP-A-8-126262 JP 2005-312241 A

  The present invention has been made in view of the above situation, and has a housing having a structure in which one end is closed and the other end is opened even when a magnetic force acts between the rotor and the stator. An electric motor assembling apparatus and an electric motor assembling method capable of easily assembling an electric motor are provided.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in claim 1,
A rotation axis;
A rotor fixed to the rotating shaft;
A stator having an inner peripheral surface facing the rotor at a predetermined interval;
A shaft support portion that rotatably supports one end of the rotating shaft, and a cylindrical shape in which one end is closed by the shaft support portion, the other end is opened, and the stator inserted from the other open end is fixed A stator fixing portion, and a housing for housing the rotating shaft, the rotor and the stator,
A cap that detachably fixes to the other end of the stator fixing portion of the housing, closes the other end of the housing, and rotatably supports the other end of the rotating shaft housed in the housing;
An electric motor assembling apparatus for assembling an electric motor comprising:
A base member for fixing a cap to which the stator is fixed;
A sliding member that slidably engages with the base member and whose sliding direction coincides with an axial direction of a cap fixed to the base member;
A shaft member that is inserted into a through-hole formed in a cap fixed to the base member, a base end is detachably fixed to the slide member, and a distal end is detachably fixed to the other end of the rotating shaft When,
A guide member that rotatably supports the shaft member and is formed so as to be slidably supported in the axial direction of the shaft member and is detachably fixed to the outside of the cap;
Comprising
When the other end of the rotating shaft is fixed to the tip of the shaft member, the axis of the rotating shaft and the axis of the shaft member are in a straight line,
When the shaft member is fixed to the slide member, the axial direction of the shaft member and the sliding direction of the slide member are parallel to each other.

In claim 2,
The other end of the rotating shaft is screwed to the tip of the shaft member.

In claim 3,
The shaft member and the rotation shaft are integrally rotated by rotating the shaft member in a direction to be fastened to the rotation shaft with the other end of the rotation shaft screwed to the tip of the shaft member. By stopping the rotation of the shaft member, the rotation shaft is rotated relative to the shaft member by an inertial force.

In claim 4,
The shaft member includes a lock member that fixes the shaft member to the guide member so as not to slide.

In claim 5,
When the distal end of the shaft member is fixed to the other end of the rotation shaft and the proximal end of the shaft member is fixed to the slide member, the slide member fixes one end of the rotation shaft.

In claim 6,
The guide member is
The shaft is rotatably supported by the cap, and the shaft member is pivotally supported at a position offset with respect to a reference shaft support position of the rotation shaft of the cap.

In claim 7,
A rotation axis;
A rotor fixed to the rotating shaft;
A stator having an inner peripheral surface facing the rotor at a predetermined interval;
A cylindrical stator that rotatably supports one end of the rotating shaft, and a cylindrical stator in which one end is closed by the shaft supporting part, the other end is opened, and the stator inserted from the other open end is fixed. A housing having a fixed portion and accommodating the rotating shaft, the rotor and the stator;
A cap that detachably fixes to the other end of the stator fixing portion of the housing, closes the other end of the housing, and rotatably supports the other end of the rotating shaft housed in the housing;
An electric motor assembling method for assembling an electric motor comprising:
A stator cap fixing step of fixing the stator to the cap;
A rotating shaft / rotor / cap fixing step of fixing the rotating shaft to the cap in a state where the other end of the rotating shaft to which the rotor is fixed is pivotally supported by the cap;
A cap housing fixing step of fixing a cap to which the rotating shaft, the rotor and the stator are fixed to the housing;
It comprises.

In claim 8,
The rotating shaft / rotor / cap fixing step includes a shaft member that can be inserted into a through-hole formed in the cap, and the shaft member is rotatably supported and slidable in the axial direction of the shaft member. And a supporting guide member,
The rotating shaft / rotor / cap fixing step includes:
A cap penetration step of penetrating the shaft member into the through hole of the cap;
A guide member pivoting step in which the shaft member is pivotally supported by the guide member so as to be rotatable and slidable by penetrating the shaft member on a guide member disposed outside the cap;
A rotating shaft / shaft member fixing step of fixing the other end of the rotating shaft in which the rotor is fixed to the tip of the shaft member with the axis of the rotating shaft and the axis of the shaft member as a straight line;
By sliding the shaft member in the axial direction of the shaft member in a state where the axial direction of the shaft member coincides with the axial direction of the cap, the other end of the rotating shaft fixed to the tip of the shaft member is the A cap pivoting process to be pivotally supported by the cap;
The shaft member is fixed to the guide member in a non-slidable manner while the other end of the rotating shaft fixed to the tip of the shaft member is supported by the cap, and the guide member is fixed to the cap. A guide member, a shaft member, and a cap fixing step for fixing to the outside;
It comprises.

In claim 9,
In the rotating shaft / shaft member fixing step, the other end of the rotating shaft is fixed by being screwed to the tip of the shaft member,
The cap housing fixing process includes
The cap fixed to the rotating shaft is fixed to the housing with the other end of the rotating shaft being pivotally supported by the shaft member and the guide member, and one end of the rotating shaft is pivotally supported to the housing. Process,
The shaft member and the rotation shaft are integrally rotated by rotating the shaft member in a direction to be fastened to the rotation shaft with the other end of the rotation shaft screwed to the tip of the shaft member. Removing the rotary shaft from the shaft member by rotating the rotary shaft relative to the shaft member by inertia force by stopping the shaft member so as not to rotate;
It comprises.

  According to the present invention, even when a magnetic force acts between the rotor and the stator, it is possible to easily assemble an electric motor having a housing having a structure in which one end is closed and only the other end is opened. There is an effect.

  Below, the in-wheel motor 1 which is one Embodiment of the electric motor used as the object of the electric motor assembly apparatus which concerns on this invention, and the electric motor assembly method which concerns on this invention using FIG. 1 is demonstrated.

“Electric motor” refers to a prime mover that converts electrical energy into mechanical energy (driving force).
“Motor” refers to a machine or device that converts energy existing in nature into mechanical work (mechanical energy).

  The in-wheel motor 1 according to the present embodiment is provided in an electric vehicle of a type in which one electric motor is provided for each wheel, and rotationally drives each wheel.

  Although the in-wheel motor 1 of this embodiment rotates the wheel of an electric vehicle, the electric motor assembly apparatus and electric motor assembly method which concern on this invention are applicable to the assembly of the electric motor used for various uses.

  As shown in FIG. 1, the in-wheel motor 1 mainly includes a rotating shaft 10, a rotor 20, a stator 30, a housing 40, a cap 50, a stator fixing member 55, a gear 60, and an output shaft 70.

The rotating shaft 10 is a substantially cylindrical member, and serves as a central axis when the rotor 20 described later rotates.
A concave portion 11 is formed on the end surface of one end of the rotating shaft 10, and a male screw 12 is formed on the outer peripheral surface of the other end of the rotating shaft 10.

The rotor 20 is a member that rotates when the in-wheel motor 1 generates a driving force. The rotor 20 according to the present embodiment is a field (made of a magnetic field) made of a permanent magnet, and has a substantially cylindrical shape having an outer peripheral surface 20a.
The rotor 20 is fixed to the middle part of the rotating shaft 10, and the rotor 20 and the rotating shaft 10 rotate integrally.

  The stator 30 is a member that is fixed (not rotated) when the in-wheel motor 1 generates a driving force. The stator 30 of the present embodiment is an armature (which generates a magnetic field for obtaining torque (driving force) by interacting with a field) made of a coil that can be energized, and has a substantially cylindrical shape having an inner peripheral surface 30a. Is made.

  The in-wheel motor 1 of this embodiment is an electric motor (rotating field type electric motor) having the rotor 20 as a field and the stator 30 as an armature, but the electric motor assembly apparatus and the electric motor assembly method according to the present invention are the rotor. And an electric motor (rotary armature type electric motor) having a stator as a field and a stator as a field.

The housing 40 is a member that accommodates the rotating shaft 10, the rotor 20, and the stator 30.
The housing 40 is integrally formed by injection molding of an aluminum alloy which is an example of a nonmagnetic material. The housing 40 mainly includes a shaft support portion 41 and a stator fixing portion 42.

The shaft support portion 41 is a portion that rotatably supports one end of the rotary shaft 10 to which the rotor 20 is fixed, among the portions constituting the housing 40.
In the present embodiment, the shaft support portion 41 is formed with a hole 41a that communicates the space surrounded by the shaft support portion 41 and the stator fixing portion 42 and the outside of the housing 40, and the bearing 81 is fitted into the hole 41a and the rotation shaft One end of 10 is inserted into the bearing 81.
In this way, one end of the rotary shaft 10 is rotatably supported by the shaft support portion 41 and protrudes from the hole 41 a formed in the shaft support portion 41 toward the outside of the housing 40.
In the present embodiment, a cover portion 41 b that supports one end of the output shaft 70 and covers one end of the rotary shaft 10, the gear 60, and one end of the output shaft 70 is formed outside the shaft support portion 41.

The stator fixing portion 42 is a cylindrical portion whose one end is closed by the shaft support portion 41 and the other end is opened among the portions constituting the housing 40.
Here, “one end of the stator fixing portion 42 is closed by the shaft supporting portion 41” means a space surrounded by the shaft supporting portion 41 and the stator fixing portion 42 (a space in which the rotating shaft 10, the rotor 20 and the stator 30 are accommodated). It does not indicate that a hole communicating with the outside of the housing 40 is not formed in the shaft support portion 41, but even if such a hole is formed in the shaft support portion 41, the shaft support portion 41 and the stator fixing portion 42 from the hole. It means that one end of the stator fixing portion 42 is blocked by the shaft support portion 41 to such an extent that the rotary shaft 10, the rotor 20, and the stator 30 cannot be accommodated in the space surrounded by.
In the case of this embodiment, the shaft support 41 is formed with a hole 41a that communicates the space surrounded by the shaft support 41 and the stator fixing portion 42 with the cover 41b and the outside of the housing 40. The hole 41a is a rotor. 20 is smaller than the rotating shaft 10 to which the shaft 20 is fixed and is bent. Therefore, the rotating shaft 10 to which the rotor 20 is fixed cannot be accommodated in the space surrounded by the shaft support portion 41 and the stator fixing portion 42 through the hole 41a. It has become.

The rotating shaft 10, the rotor 20, and the stator 30 are inserted from the other end (the other open end) of the stator fixing portion 42 into a space surrounded by the shaft support portion 41 and the stator fixing portion 42.
Further, when the rotary shaft 10, the rotor 20, and the stator 30 are accommodated in the housing 40, the inner peripheral surface 30 a of the stator 30 is fixed to the rotary shaft 10 that is pivotally supported by the shaft support portion 41 and a cap 50 described later. It faces the outer peripheral surface 20a of the rotor 20 with a predetermined interval.
The stator fixing portion 42 is a cylindrical portion, but the shape does not have to be a shape (cylindrical shape) that follows the outer shape of the stator 30; The shape can be selected according to the strength.

The cap 50 is a member that closes the other end of the stator fixing portion 42 of the housing 40 and rotatably supports the other end of the rotating shaft 10 to which the rotor 20 is fixed.
In this embodiment, the cap 50 is fixed to the other end of the stator fixing portion 42 of the housing 40 by bolt fastening. The cap 50 is formed with a housing 40 and a through hole 50a that communicates the space surrounded by the cap 50 and the outside of the housing 40. A bearing 82 is fitted into the through hole 50a and the other end of the rotary shaft 10 is connected to the cap 50. It is penetrated by the bearing 82.
In this way, the other end of the rotating shaft 10 is rotatably supported by the cap 50.

The stator fixing member 55 is a member that fixes the stator 30 to the cap 50.
In this embodiment, the stator 30 and the cap 50 are fixed by fastening between the stator 30 and the stator fixing member 55 and between the cap 50 and the stator fixing member 55 with a bolt (not shown).

  The gear 60 is a spur gear fixed to one end of the rotary shaft 10, and teeth 60 a, 60 a... Are formed on the outer peripheral surface of the gear 60.

The output shaft 70 is a member that is supported by the housing 40 via a bearing 83 that is fixed to the outside of the shaft support portion 41 of the housing 40 (a space surrounded by the cover portion 41b).
Teeth 70a, 70a,... Are formed on the outer peripheral surface of one end of the output shaft 70 (the end portion that is supported by the bearing 83). The teeth 70a, 70a,... Mesh with the teeth 60a, 60a,.
Teeth 70b, 70b,... Are formed in the middle of the outer peripheral surface of the output shaft 70.

In the housing 40, a wheel (not shown) of a wheel of the electric vehicle is rotatably supported at a position (cover portion 41b) opposite to the stator fixing portion 42 with the shaft support 41 interposed therebetween.
Inner peripheral teeth are formed on the inner peripheral surface of the wheel of the electric vehicle wheel, and a planetary gear is formed on which outer peripheral teeth that mesh with both the inner peripheral teeth and the teeth 70b, 70b,... Of the output shaft 70 are formed. .
A planetary gear mechanism (not shown) is constituted by the inner peripheral teeth formed on the inner peripheral surface of the wheel, the planetary gear, and the teeth 70b, 70b, ... of the output shaft 70.
Accordingly, when the coil constituting the stator 30 is energized, the rotating shaft 10 to which the rotor 20 is fixed rotates, and the driving force generated by the rotation of the rotating shaft 10 causes the gear 60, the output shaft 70, and the planetary gear mechanism (not shown). Then, it is transmitted to the wheel of the electric vehicle, and the wheel is driven to rotate.

  Below, the schematic structure of the assembly apparatus 100 which is one Embodiment of the electric motor assembly apparatus which concerns on this invention using FIG. 2 is demonstrated.

The assembling apparatus 100 is an apparatus for assembling the in-wheel motor 1.
As shown in FIG. 2, the assembly apparatus 100 mainly includes a base member 110, a slide member 120, a shaft member 130, a guide member 140, and a lock member 150.

The base member 110 is an embodiment of the base member according to the present invention, and fixes the cap 50 to which the stator 30 is fixed.
The base member 110 mainly includes a base plate 111, fixed bases 112L and 112R, legs 113L and 113R, and rails 114L and 114R.

  The base plate 111 is a plate-like member that forms the main structure of the base member 110. A hole 111 a is formed in a substantially central portion of the base plate 111.

  The fixed bases 112L and 112R are substantially rectangular parallelepiped members. The fixed bases 112L and 112R are fixed to the upper surface of the base plate 111 with a predetermined distance across the hole 111a.

  The legs 113L and 113R are substantially rectangular parallelepiped members extending in the vertical direction. The upper ends of the legs 113L and 113R are fixed to the left end and the right end of the lower surface of the base plate 111, respectively. The lower ends of the legs 113L and 113R are respectively fixed to the floor surface.

  The rails 114L and 114R are rod-shaped members extending in the vertical direction. The lower ends of the rails 114L and 114R are fixed to the left end and the right end of the upper surface of the base plate 111, respectively.

The slide member 120 is an embodiment of the slide member according to the present invention, and is slidably engaged with the base member 110.
The slide member 120 mainly includes a bottom plate 121, slide blocks 122L and 122R, a top plate 123, bolts 124 and 124, an engagement pin 125, a shaft receiving plate 126, and bolts 127 and 127.

The bottom plate 121 is a plate-like member that forms the lower part of the slide member 120. A hole 121 a that penetrates the top and bottom surfaces of the bottom plate 121 is formed in a substantially central portion of the bottom plate 121.
Bolt holes 121b and 121b are formed in the bottom plate 121 with a hole 121a interposed therebetween, and female screws are formed on the inner peripheral surfaces of the bolt holes 121b and 121b.
Leg holes 121c and 121c are formed in the left and right ends of the bottom plate 121, respectively. The legs 113L and 113R of the base member 110 are inserted into the leg holes 121c and 121c, respectively, and the bottom plate 121 is disposed below the base plate 111 of the base member 110.

The slide blocks 122L and 122R are members that are erected on the left and right ends of the bottom plate 121, respectively.
A groove 128L extending in the vertical direction is formed on the right side surface of the slide block 122L. The rail 114L of the base member 110 is slidably engaged with the groove 128L.
A groove 128R extending in the vertical direction is formed on the left side surface of the slide block 122R. The rail 114R of the base member 110 is slidably engaged with the groove 128R.

  The top plate 123 is a plate-like member that forms the upper part of the slide member 120. The left and right end portions of the top plate 123 are detachably fixed to the upper end portions of the slide blocks 122L and 122R by bolts 124 and 124, respectively.

  The engagement pin 125 is a substantially cylindrical protrusion. A base portion (upper end portion) of the engagement pin 125 is fixed to a substantially central portion of the lower surface of the top plate 123, and a distal end (lower end) of the engagement pin 125 protrudes downward. The tip of the engagement pin 125 is formed in a substantially conical shape.

  The shaft receiving plate 126 is a substantially disk-shaped member. A recess 126 a is formed on the upper surface of the shaft receiving plate 126. Bolt holes 126b and 126b penetrating the upper and lower surfaces are formed in the shaft receiving plate 126 so as to sandwich the recess 126a.

Bolts 127 and 127 are bolts for detachably fixing the shaft receiving plate 126 to the bottom plate 121.
The bolts 127 and 127 are respectively inserted into the bolt holes 126b and 126b of the shaft receiving plate 126 and screwed into the bolt holes 121b and 121b of the bottom plate 121, so that the shaft receiving plate 126 is detachably fixed to the bottom plate 121. .
When the shaft receiving plate 126 is fixed to the bottom plate 121, the upper surface of the shaft receiving plate 126 contacts the lower surface of the bottom plate 121, and the recess 126a of the shaft receiving plate 126 coincides with the hole 121a of the bottom plate 121 in plan view. .

The shaft member 130 is an embodiment of the shaft member according to the present invention.
The shaft member 130 is a substantially columnar member, and a screw hole extending in the longitudinal direction of the shaft member 130 is formed at the center of the end surface (top end) of the shaft member 130, and a female screw is formed on the inner peripheral surface of the screw hole. 131 is formed.
Further, a male screw 132 is formed in the middle portion of the outer peripheral surface of the shaft member 130.

The guide member 140 is an embodiment of the guide member according to the present invention.
The guide member 140 has a shape in which two cylinders having different diameters are stacked concentrically (so that the central axes as rotating bodies coincide). The guide member 140 is formed with a sliding shaft support hole 141 that penetrates the upper and lower end faces of the guide member 140.
The inner diameter of the sliding shaft support hole 141 of the guide member 140 and the outer diameter of the shaft member 130 are substantially the same. Therefore, when the shaft member 130 is inserted into the sliding shaft support hole 141 of the guide member 140, the shaft member 130 is rotatably supported with respect to the guide member 140 and is slidably supported.

The lock member 150 is an embodiment of the lock member according to the present invention.
The lock member 150 of the present embodiment has substantially the same shape as an existing hexagon nut, and a female screw 151 is formed in a hole that penetrates the upper and lower surfaces of the lock member 150.

Hereinafter, a “method of assembling the in-wheel motor 1 by the assembling apparatus 100”, which is an embodiment of the electric motor assembling method according to the present invention, will be described with reference to FIGS.
As shown in FIG. 3, the “method of assembling the in-wheel motor 1 by the assembling apparatus 100” includes a stator / cap fixing step S1100, a rotating shaft / rotor / cap fixing step S1200, and a cap / housing fixing step S1300.

As shown in FIG. 4, the stator / cap fixing step S <b> 1100 is a step of fixing the stator 30 to the cap 50.
In the stator cap fixing step S1100, first, the stator 30 and the cap 50 are fixed by fastening between the stator 30 and the stator fixing member 55 and between the cap 50 and the stator fixing member 55 with bolts (not shown).
Next, the cap 50 to which the stator 30 is fixed is fixed to the base member 110 by fastening between the cap 50 and the fixed bases 112L and 112R with a bolt (not shown).

As shown in FIG. 4, when the cap 50 is fixed to the base member 110, the inner surface of the cap 50 (the surface facing the inner space of the in-wheel motor 1 when the cap 50 is fixed to the housing 40). The cap 50 is fixed so that the outer surface of the cap 50 (the surface facing the outside of the in-wheel motor 1 when the cap 50 is fixed to the housing 40) faces downward.
Further, in the state where the cap 50 is fixed to the base member 110, as shown by a one-dot chain line in FIG. 4, the axis direction of the cap 50 (the axis line of the rotating shaft 10 when the rotating shaft 10 is properly supported by the cap 50). (Direction) corresponds to the vertical direction, that is, the direction in which the slide member 120 slides with respect to the base member 110 (the slide direction of the slide member 120).
Further, as shown in FIG. 4, the through hole 50 a formed in the cap 50, the hole 111 a formed in the base plate 111 of the base member 110, and the hole 121 a formed in the bottom plate 121 of the slide member 120 are viewed in plan view. Overlap (match).

  When the stator / cap fixing step S1100 is completed, the process proceeds to the rotating shaft / rotor / cap fixing step S1200.

In the stator cap fixing step S1100, the stator 30 is first fixed to the cap 50, and then the cap 50 to which the stator 30 is fixed is fixed to the base member 110. However, the present invention is not limited to this.
For example, the cap 50 may be fixed to the base member 110 first, and then the stator 30 may be fixed to the cap 50 fixed to the base member 110.

The rotating shaft / rotor / cap fixing step S1200 is a step of fixing the rotating shaft 10 to the cap 50 in a state where the other end of the rotating shaft 10 to which the rotor 20 is fixed is pivotally supported by the cap 50.
In this embodiment, the rotating shaft / rotor / cap fixing step S1200 mainly includes a cap penetration step S1210, a guide member shaft supporting step S1220, a rotating shaft / shaft member fixing step S1230, a cap shaft supporting step S1240, and a guide member / shaft member / step. A cap fixing step S1250 is provided.

As shown in FIG. 5, the cap penetration step S <b> 1210 is a step of penetrating the shaft member 130 into the through hole 50 a formed in the cap 50.
When the cap penetration step S1210 is completed, the process proceeds to the guide member pivoting step S1220.

As shown in FIG. 5, in the guide member pivoting step S <b> 1220, the shaft member 130 is inserted into the guide member 140 disposed outside the cap 50 so that the shaft member 130 can rotate and slide on the guide member 140. This is a process of making it supported.
In the guide member pivoting step S1220, the shaft member 130 penetrated in the through hole 50a of the cap 50 in the cap penetration step S1210 is sandwiched between the fixed bases 112L and 112R below the cap 50 previously fixed to the base member 110. The guide member 140 and the lock member 150 disposed in the space).

As shown in FIG. 5, in the rotating shaft / shaft member fixing step S1230, the axis of the rotating shaft 10 and the axis of the shaft member 130 are aligned (see the dashed line in FIG. 5). This is a step of fixing the other end of the rotary shaft 10.
In the rotating shaft / shaft member fixing step S1230, the male screw 12 formed on the outer peripheral surface of the other end of the rotating shaft 10 and the female screw 131 formed on the tip of the shaft member 130 are engaged with each other. The other end of the rotating shaft 10 is screwed to the tip of the shaft member 130 in a state where the axis and the axis of the shaft member 130 are in a straight line.

As shown in FIG. 5, in this embodiment, the rotor 20 and the gear 60 are fixed to the rotating shaft 10 in advance and the rotating shaft 10 is inserted into bearings 81 and 82, and then the other end of the rotating shaft 10 is connected to the shaft member 130. Screw onto the tip of
When the cap penetration step S1230 is completed, (a) the slide member 120 slides upward with respect to the base member 110, and (b) the shaft member 130 is formed on the base plate 111 of the base member 110. (C) The base end (lower end) of the shaft member 130 is fitted into the recess 126a formed in the shaft receiving plate 126. (D) Bolts 127 and 127 are inserted into bolt holes 126b and 126b formed in the shaft receiving plate 126, and screwed into bolt holes 121b and 121b formed in the bottom plate 121 of the slide member 120, respectively. The receiving plate 126 is fixed to the lower surface of the bottom plate 121, and (e) the top plate 123 is fixed by bolts 124 and 124. Fixed to the slide block 122L · 122R, it is fitted into the recess 11 of the tip is formed on one end of the rotary shaft of the engagement pin 125 provided on the lower surface of (f) the top plate 123.
As a result, when the cap penetration step S1230 is completed, the rotary shaft 10 is fixed to the slide member 120 in such a manner that both ends of the rotary shaft 10 are supported. The rotating shaft 10 to which the rotor 20 is fixed is positioned above the stator 30, and the outer peripheral surface 20 a of the rotor 20 and the inner peripheral surface 30 a of the stator 30 do not face each other.
When the rotating shaft / shaft member fixing step S1230 is completed, the process proceeds to the cap shaft supporting step S1240.

  As shown in FIG. 6, in the cap shaft support step S1240, the shaft member 130 is slid in the axial direction of the shaft member 130 in a state where the axial direction of the shaft member 130 and the axial direction of the cap 50 coincide with each other. This is a step of setting the other end of the rotary shaft 10 fixed to the tip end to be supported by the cap 50.

In this embodiment, the direction in which the slide member 120 slides with respect to the base member 110 (the slide direction of the slide member 120) and the axial direction of the shaft member 130 fixed to the slide member 120 together with the rotary shaft 10 are all. Vertical and parallel.
When the slide member 120 is slid downward with respect to the base member 110 from the state shown in FIG. 5 (the state where the rotary shaft / shaft member fixing step S1230 is completed), the rotary shaft 10 to which the rotor 20 is fixed as shown in FIG. Is accommodated in a space surrounded by the stator 30, and a bearing 82 fitted on the other end of the rotary shaft 10 is fitted in a recess formed in the peripheral edge of the through hole 50a on the inner surface of the cap 50, The other end of the rotary shaft 10 is supported by the cap 50.
When the rotary shaft 10 to which the rotor 20 is fixed is accommodated in the space surrounded by the stator 30, a magnetic force acts between the rotor 20 and the stator 30, but the rotary shaft 10 is fixed to the shaft member 130 and thus the slide member 120. Since the sliding direction of the slide member 120 and the axial direction of the shaft member 130 (and hence the axial direction of the rotary shaft 10) are parallel, the rotor 20 and the stator 30 do not come into contact with each other.
When the cap shaft support step S1240 is completed, the process proceeds to the guide member / shaft member / cap fixing step S1250.

  As shown in FIG. 6, in the guide member / shaft member / cap fixing step S <b> 1250, the shaft member 130 is held while the other end of the rotary shaft 10 fixed to the tip of the shaft member 130 is supported by the cap 50. In this step, the guide member 140 is fixed to the guide member 140 so as not to slide, and the guide member 140 is fixed to the outside of the cap 50.

  As shown in FIG. 6, in the guide member / shaft member / cap fixing step S <b> 1250, first, the guide member 140 is slid upward along the shaft member 130, and the guide member 140 is in contact with the outer surface of the cap 50. And

Next, the female screw 151 of the lock member 150 is engaged with the male screw 132 formed in the middle of the shaft member 130, and the lock member 150 is tightened in a direction in which the guide member 140 is pressed against the outer surface of the cap 50.
As a result, the shaft member 130 is fixed to the guide member 140 so as not to be slidable while the other end of the rotary shaft 10 fixed to the tip of the shaft member 130 is pivotally supported by the cap 50, and the guide member. It is possible to fix 140 to the outside of the cap 50.

Subsequently, as shown in FIG. 7, the top plate 123 of the slide member 120 is removed from the slide blocks 122L and 122R, and the cap 50 is removed from the fixed bases 112L and 112R, whereby the motor assembly 90 is removed from the base member 110 and the slide member 120. Take out.
Here, the motor assembly 90 is an intermediate product generated in the process of assembling the in-wheel motor 1, and indicates the cap 50 to which the rotating shaft 10, the rotor 20, and the stator 30 are fixed.
The motor assembly 90 maintains a state in which the rotating shaft 10, the rotor 20, the stator 30, and the cap 50 are fixed to each other by a rotor fixing jig 170 that is a combination of the shaft member 130, the guide member 140, and the lock member 150. .
When the guide member / shaft member / cap fixing step S1250 is completed, the rotary shaft / rotor / cap fixing step S1200 is completed.
When the rotating shaft / rotor / cap fixing step S1200 is completed, the process proceeds to the cap / housing fixing step S1300.

In the present embodiment, the top plate 123 is removed from the slide blocks 122L and 122R, and the combination of the motor assembly 90 and the rotor fixing jig 170 is pulled upward to assemble the motor assembly 90 and the rotor fixing jig 170 together. Although it was set as the structure removed from the apparatus 100, this invention is not limited to this.
For example, in FIG. 2, the hole 111 a formed in the base plate 111 of the base member 110 and the hole 121 a formed in the bottom plate 121 of the slide member 120 are notched grooves extending forward of the motor assembly device 100, and the shaft receiving plate 126. Assembling the motor assembly 90 and the rotor fixing jig 170 together by removing the cap 50 from the fixed bases 112L and 112R and pulling out the combination of the motor assembly 90 and the rotor fixing jig 170 forward. It is good also as a structure removed from the apparatus 100. FIG.

The cap / housing fixing step S1300 is a step of fixing the motor assembly 90 (in other words, the cap 50 to which the rotating shaft 10, the rotor 20 and the stator 30 are fixed by the rotor fixing jig 170) to the housing 40.
In the present embodiment, the cap housing fixing step S1300 mainly includes a final fixing step S1310 and a removing step S1320.

  In the final fixing step S1310, the cap 50 to which the rotary shaft 10 is fixed is fixed to the housing 40 while the other end of the rotary shaft 10 is pivotally supported by the shaft member 130, the guide member 140, and the lock member 150. In this step, one end is pivotally supported on the housing 40.

  As shown in FIG. 8, in the final fixing step S <b> 1310, first, the housing 40 is fixed to the housing fixing member 160. In this embodiment, the housing 40 is fixed to the housing fixing member 160 so that the shaft support portion 41 of the motor assembly 90 is downward and the other end of the stator fixing portion 42 is open upward.

Next, while the rotating shaft 10, the rotor 20, and the stator 30 of the motor assembly 90 are inserted from the opening of the stator fixing portion 42 into the stator fixing portion 42, the motor assembly 90 is moved downward, and the cap 50 is not shown. It fixes to the housing 40 (the other end of the stator fixing | fixed part 42) with a volt | bolt.
When the cap 50 is fixed to the housing 40, a bearing 81 that is previously fitted to the rotary shaft 10 is fitted into a hole 41 a formed in the shaft support portion 41 of the housing 40, so that one end of the rotary shaft 10 is fitted to the housing 40. It is pivotally supported by the shaft.

When the cap 50 is fixed to the housing 40, the lower end surface of the stator 30 is engaged with the inner surface of the shaft support portion 41, and the outer peripheral surface of the stator 30 is engaged with the inner peripheral surface of the stator fixing portion 42.
More specifically, a projection (not shown) formed on the lower end surface of the stator 30 is fitted into a recess (not shown) formed on the shaft support portion 41, so that the lower end surface of the stator 30 becomes an inner surface of the shaft support portion 41. The protrusions (not shown) formed on the outer peripheral surface of the stator 30 are engaged with the groove-shaped recesses formed on the inner peripheral surface of the stator fixing portion 42, so that the outer peripheral surface of the stator 30 is fixed to the stator fixing portion 42. Engage with the inner peripheral surface.
In this way, the stator 30 is fixed to the cap 50 and the housing 40.

Subsequently, as shown in FIG. 9, by loosening the lock member 150 of the rotor fixing jig 170 and removing it from the shaft member 130 and the guide member 140, the other end of the rotary shaft 10 is rotatably supported by the cap 50, The tip end of the shaft member 130 is rotatably supported by the guide member 140.
When the final fixing step S1310 is completed, the process proceeds to the removal step S1320.

  In the detaching step S1320, the shaft member 130 and the rotary shaft 10 are integrally rotated by rotating the shaft member 130 in a direction to be fastened to the rotary shaft 10 in a state where the other end of the rotary shaft 10 is screwed to the tip of the shaft member 130. Next, the shaft member 130 is stopped to be non-rotatable so that the rotating shaft 10 is rotated relative to the shaft member 130 by inertia force, and the rotating shaft 10 is detached from the shaft member 130.

As shown in FIG. 9, in the removal step S1320, the shaft member 130 is first rotated clockwise as viewed from above with the lock member 150 loosened and removed from the shaft member 130 and the guide member 140.
Since the male screw 12 formed at the other end of the rotary shaft 10 and the female screw 132 formed at the tip of the shaft member 130 are right-hand screws, when the shaft member 130 is rotated clockwise as viewed from above in FIG. The shaft member 130 is fastened to the rotating shaft 10.
Therefore, the rotating shaft 10 rotates integrally with the shaft member 130.

Next, the shaft member 130 is stopped so as not to rotate.
When the rotation of the shaft member 130 is stopped, an inertial force acts on the rotating shaft 10, so that the rotating shaft 10 continues to rotate clockwise as viewed from above.
Therefore, the shaft member 130 rotates counterclockwise relative to the rotating shaft 10 when viewed from above.
As a result, the screw engagement between the tip of the shaft member 130 and the other end of the rotating shaft 10 is loosened, and the shaft member 130 is detached from the rotating shaft 10 as shown in FIG.
In this embodiment, the shaft member 130 is rotationally driven and stopped using an existing electric motor (not shown). However, the present invention is not limited to this, and the shaft member may be rotationally driven by other methods. good.

Subsequently, as shown in FIG. 11, the guide member 140 is removed from the cap 50.
Since the guide member 140 is disposed outside the cap 50, it can be easily removed from the cap 50.

As described above, the motor assembly device 100 is
A rotating shaft 10;
A rotor 20 fixed to the rotary shaft 10;
A stator 30 having an inner peripheral surface 30a facing the rotor 20 at a predetermined interval;
A shaft support portion 41 that rotatably supports one end of the rotary shaft 10, and a cylinder in which one end is closed by the shaft support portion 41, the other end is opened, and the stator 30 inserted from the other open end is fixed. A housing 40 having a stator-shaped stator fixing portion 42 and housing the rotary shaft 10, the rotor 20 and the stator 30;
A cap 50 that closes the other end of the housing 40 and rotatably supports the other end of the rotary shaft 10 accommodated in the housing 40 by being detachably fixed to the other end of the stator fixing portion 42 of the housing 40. When,
An electric motor assembling apparatus for assembling an in-wheel motor 1 comprising:
A base member 110 for fixing the cap 50 to which the stator 30 is fixed;
A sliding member 120 that slidably engages with the base member 110 and whose sliding direction coincides with the axial direction of the cap 50 fixed to the base member 110;
It is inserted into a through-hole 50a formed in the cap 50 fixed to the base member 110, the base end is detachably fixed to the slide member 120, and the tip is detachably fixed to the other end of the rotary shaft 10. A shaft member 130;
A slide shaft support hole 141 is formed to rotatably support the shaft member 130 and support the shaft member 130 slidably in the axial direction of the shaft member 130. The guide member 140 is detachably fixed to the outside of the cap 50. When,
Comprising
When the other end of the rotating shaft 10 is fixed to the tip of the shaft member 130, the axis of the rotating shaft 10 and the axis of the shaft member 130 are in a straight line,
When the shaft member 130 is fixed to the slide member 120, the axial direction of the shaft member 130 and the sliding direction of the slide member 120 are parallel.
This configuration has the following advantages.
That is, before the housing 40 having a structure in which one end is closed and only the other end is opened, the housing 40 is generally flatter than the housing 40 (having a shape with a small portion covering the outer peripheral surfaces of the rotor 20 and the stator 30). Since the rotor 20 and the stator 30 are attached to the cap 50, handling of the rotor 20 and the stator 30 at the time of attachment is easy.
Further, since the rotating shaft 10 to which the rotor 20 is fixed is firmly supported by the base member 110 via the shaft member 130 and the slide member 120, even if a magnetic force acts between the rotor 20 and the stator 30, The rotor 20 can be accommodated in a space surrounded by the stator 30 while maintaining a constant distance from the outer peripheral surface 20 a of the rotor 20 to the inner peripheral surface 30 a of the stator 30.
Therefore, even when a magnetic force acts between the rotor 20 and the stator 30, it is possible to easily assemble the in-wheel motor 1 having the housing 40 having a structure in which one end is closed and only the other end is opened. It is.

Moreover, the electric motor assembly apparatus 100 is
The other end of the rotating shaft 10 is screwed to the tip of the shaft member 130.
With this configuration, the rotary shaft 10 can be easily attached to and detached from the shaft member 130.

Moreover, the electric motor assembly apparatus 100 is
The shaft member 130 and the rotating shaft 10 are rotated together by rotating the shaft member 130 in a direction to be fastened to the rotating shaft 10 with the other end of the rotating shaft 10 screwed to the tip of the shaft member 130. By stopping the rotation of the shaft member 130, the rotating shaft 10 is rotated relative to the shaft member 130 by an inertial force.
With this configuration, the rotating shaft 10 accommodated in the housing 40 can be easily detached from the shaft member 130.

Moreover, the electric motor assembly apparatus 100 is
A lock member 150 is provided to fix the shaft member 130 to the guide member 140 so as not to slide.
With this configuration, it is possible to maintain a state in which the rotating shaft 10, the rotor 20, the stator 30, and the cap 50 are fixed to each other without the rotor 20 and the stator 30 being in contact with each other.

Moreover, the electric motor assembly apparatus 100 is
When the distal end of the shaft member 130 is fixed to the other end of the rotary shaft 10 and the proximal end of the shaft member 130 is fixed to the slide member 120, the slide member 120 fixes one end of the rotary shaft 10 (in this embodiment). In this case, the engaging pin 125 fixed to the lower surface of the top plate 123 is fitted into the recess 11 formed at one end of the rotating shaft 10, whereby one end of the rotating shaft 10 is fixed to the slide member 120).
With this configuration, when the slide member 120 slides with respect to the base member 110, both ends of the rotary shaft 10 are supported by the slide member 120, and the rotor 20 fixed to the rotary shaft 10 and It is possible to prevent the stator 30 from coming into contact.

  In this embodiment, the guide member 140 has a shape in which two cylinders having different diameters are concentrically stacked one above the other. However, the present invention is not limited to this, and for example, a protrusion extending in the axial direction is formed on the outer peripheral surface of the guide member. And it is good also as a structure by which the guide member is fixed to a cap so that relative rotation is impossible with respect to the cap by forming the groove | channel which the said protrusion fits in the through-hole of a cap.

As shown in FIG. 12, the guide member 140 is rotatably supported by the cap 50 via the bearing 142 by fitting the bearing 142 to the guide member 140, and the sliding shaft support hole 141 is configured as a guide member. By forming the shaft member 130 at a position offset from the center of 140, the reference shaft support position of the rotary shaft 10 in the cap 50 (the axis of the rotary shaft 10 when the rotary shaft 10 is properly supported by the cap 50 (center A configuration may be adopted in which the shaft is pivotally supported at a position offset with respect to the position of the shaft).
With this configuration, when the cap 50 is fixed to the housing 40, when one end of the rotary shaft 10 is not well supported by the housing 40 (in this embodiment, the bearing 81 does not fit well into the hole 41a). However, by rotating the guide member 140 with respect to the cap 50, it is possible to adjust the deviation between one end of the rotating shaft 10 and the pivot support position of the rotating shaft 10 in the housing 40. The wheel motor 1 can be easily assembled.
Further, the shaft member 130 pivotally supported by the guide member 140 is inclined by an amount of play (backlash) inside the bearing 142 so that a deviation between one end of the rotary shaft 10 and the pivotal support position of the rotary shaft 10 in the housing 40 is avoided. It is possible to adjust.

Further, as shown in FIG. 13, not only the bearing 142 is fitted on the guide member 140, but also the bearing 143 is fitted on the sliding shaft support hole 141, and the guide member 140 pivots the shaft member 130 via the bearing 143. It is good also as a structure to support.
With this configuration, the shaft member 130 can be further tilted by the amount of play (backlash) inside the bearing 143 compared to the configuration shown in FIG. It is possible to easily adjust the deviation between the ten pivot support positions.

As shown in FIG. 14, the sliding shaft support hole 141 formed in the guide member 140 is made larger than the outer diameter of the shaft member 130, and the slide shaft support hole 141 is rotatably fitted and offset. It is also possible to provide a collar 144 in which a hole 144a is formed so that the shaft member 130 is slidably and rotatably inserted into the hole 144a.
With this configuration, when the cap 50 is fixed to the housing 40, when one end of the rotary shaft 10 is not well supported by the housing 40 (in this embodiment, the bearing 81 does not fit well into the hole 41a). However, by rotating the collar 144 with respect to the guide member 140, it is possible to adjust the deviation between one end of the rotating shaft 10 and the support position of the rotating shaft 10 in the housing 40. The wheel motor 1 can be easily assembled.

As described above, one embodiment of the method for assembling the electric motor according to the present invention is as follows.
A rotating shaft 10;
A rotor 20 fixed to the rotary shaft 10;
A stator 30 having an inner peripheral surface 30a facing the rotor 20 at a predetermined interval;
A shaft support portion 41 that rotatably supports one end of the rotary shaft 10, and a cylinder in which one end is closed by the shaft support portion 41, the other end is opened, and the stator 30 inserted from the other open end is fixed. A housing 40 having a stator-shaped stator fixing portion 42 and housing the rotary shaft 10, the rotor 20 and the stator 30;
A cap 50 that closes the other end of the housing 40 and rotatably supports the other end of the rotary shaft 10 accommodated in the housing 40 by being detachably fixed to the other end of the stator fixing portion 42 of the housing 40. When,
An electric motor assembling method for assembling an in-wheel motor 1 comprising:
Stator cap fixing step S1100 for fixing the stator 30 to the cap 50;
A rotating shaft / rotor / cap fixing step S1200 for fixing the rotating shaft 10 to the cap 50 in a state where the other end of the rotating shaft 10 to which the rotor 20 is fixed is pivotally supported by the cap 50;
A cap housing fixing step S1300 for fixing the cap 50 to which the rotary shaft 10, the rotor 20 and the stator 30 are fixed to the housing 40;
It comprises.
By configuring in this way, even when a magnetic force acts between the rotor 20 and the stator 30, the in-wheel motor 1 having the housing 40 having a structure in which one end is closed and only the other end is opened. It can be easily assembled.

Further, the rotating shaft / rotor / cap fixing step S1200 according to the embodiment of the electric motor assembling method of the present invention includes:
A shaft member 130 that can be inserted into a through hole 50a formed in the cap 50, and a guide member 140 that rotatably supports the shaft member 130 and supports the shaft member 130 so as to be slidable in the axial direction of the shaft member 130 are used. Done,
The rotating shaft / rotor / cap fixing step S1200
A cap penetration step S1210 for penetrating the shaft member 130 into the through hole 50a of the cap 50;
A guide member pivoting step S1220 in which the shaft member 130 is rotatably supported and slidably supported by the guide member 140 by penetrating the shaft member 130 into the guide member 140 disposed outside the cap 50; ,
A rotating shaft / shaft member fixing step S1230 for fixing the other end of the rotating shaft 10 with the rotor 20 fixed to the tip of the shaft member 130 by aligning the axis of the rotating shaft 10 and the axis of the shaft member 130;
By sliding the shaft member 130 in the axial direction of the shaft member 130 in a state where the axial direction of the shaft member 130 and the axial direction of the cap 50 coincide with each other, the other end of the rotary shaft 10 fixed to the distal end of the shaft member 130 is A cap support step S1240 that is supported by the cap 50;
The shaft member 130 is fixed to the guide member 140 in a non-slidable manner while the other end of the rotary shaft 10 fixed to the tip of the shaft member 130 is pivotally supported by the cap 50 and the guide member 140 is capped. 50, a guide member, a shaft member, and a cap fixing step S1250 for fixing to the outside of
It comprises.
With this configuration, even when a magnetic force acts between the rotor 20 and the stator 30, it is possible to prevent the rotor 20 and the stator 30 from contacting each other, and one end is closed. In addition, the in-wheel motor 1 having the housing 40 having a structure in which only the other end is opened can be easily assembled.

An embodiment of the method for assembling the electric motor according to the present invention is as follows:
In the rotating shaft / shaft member fixing step S1230, the other end of the rotating shaft 10 is fixed by being screwed to the tip of the shaft member 130,
Cap and housing fixing step S1300
The cap 10 to which the rotating shaft 10 is fixed is fixed to the housing 40 with the other end of the rotating shaft 10 being pivotally supported by the shaft member 130 and the guide member 140, and one end of the rotating shaft 10 is finally supported to the housing 40. Fixing step S1310;
The shaft member 130 and the rotating shaft 10 are rotated together by rotating the shaft member 130 in a direction to be fastened to the rotating shaft 10 with the other end of the rotating shaft 10 screwed to the tip of the shaft member 130. A removal step S1320 for rotating the rotation shaft 10 relative to the shaft member 130 by inertia force by stopping the shaft member 130 so as not to rotate, and removing the rotation shaft 10 from the shaft member 130;
It comprises.
With this configuration, the rotating shaft 10 accommodated in the housing 40 can be easily detached from the shaft member 130.

In one embodiment of the method for assembling the electric motor according to the present invention, when the cap penetration step S1210 is completed, the process proceeds to the guide member pivotal support step S1220, and when the guide member pivotal support step S1220 is complete, the rotary shaft / shaft member fixing step S1230 is completed. However, the present invention is not limited to this, and the cap penetration process, the guide member pivoting process, and the rotation are performed according to the configuration of the motor assembling apparatus used to implement the motor assembling method according to the present invention. The order in which the shaft / shaft member fixing step is performed can be appropriately changed.
For example, (α) the shaft member may be inserted into the guide member and the lock member, then the shaft member may be inserted into the cap, and then the rotation shaft of the motor may be fixed to the shaft member. It is good also as a structure which fixes the rotating shaft of an electric motor to a member, and penetrates a shaft member to a cap next, and then penetrates a shaft member to a guide member and a lock member.

Side surface sectional drawing which shows one Embodiment of an electric motor. 1 is a side cross-sectional view illustrating an embodiment of an electric motor assembly device according to the present invention. The flowchart which shows one Embodiment of the electric motor assembly method which concerns on this invention. Side surface sectional drawing which shows the state in the stator cap fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows the state in the first half step of the rotating shaft, rotor, and cap fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows the state in the latter half stage of the rotating shaft, rotor, and cap fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows the state at the time of completion | finish of the rotating shaft, rotor, cap fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. The side sectional view showing the state in the initial stage of the cap housing fixing process of the embodiment of the electric motor assembling apparatus according to the present invention. Side surface sectional drawing which shows the state in the middle stage of the cap housing fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows the state in the latter stage of the cap housing fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows the state at the time of completion | finish of the cap housing fixing process of one Embodiment of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows another embodiment of the guide member of the electric motor assembly apparatus which concerns on this invention. Side surface sectional drawing which shows another embodiment of the guide member of the electric motor assembly apparatus which similarly concerns on this invention. Side surface sectional drawing which shows another embodiment of the guide member of the electric motor assembly apparatus which similarly concerns on this invention.

Explanation of symbols

1 In-wheel motor (electric motor)
DESCRIPTION OF SYMBOLS 10 Rotating shaft 20 Rotor 30 Stator 30a Stator inner peripheral surface 40 Housing 41 Shaft support portion 42 Stator fixing portion 50 Cap 50a Through hole 100 Motor assembly device 110 Base member 120 Slide member 130 Shaft member 140 Guide member 141 Slide shaft support hole

Claims (9)

A rotation axis;
A rotor fixed to the rotating shaft;
A stator having an inner peripheral surface facing the rotor at a predetermined interval;
A shaft support portion that rotatably supports one end of the rotating shaft, and a cylindrical shape in which one end is closed by the shaft support portion, the other end is opened, and the stator inserted from the other open end is fixed A stator fixing portion, and a housing for housing the rotating shaft, the rotor and the stator,
A cap that detachably fixes to the other end of the stator fixing portion of the housing, closes the other end of the housing, and rotatably supports the other end of the rotating shaft housed in the housing;
An electric motor assembling apparatus for assembling an electric motor comprising:
A base member for fixing a cap to which the stator is fixed;
A sliding member that slidably engages with the base member and whose sliding direction coincides with an axial direction of a cap fixed to the base member;
A shaft member that is inserted into a through-hole formed in a cap fixed to the base member, a base end is detachably fixed to the slide member, and a distal end is detachably fixed to the other end of the rotating shaft When,
A guide member that rotatably supports the shaft member and is formed so as to be slidably supported in the axial direction of the shaft member and is detachably fixed to the outside of the cap;
Comprising
When the other end of the rotating shaft is fixed to the tip of the shaft member, the axis of the rotating shaft and the axis of the shaft member are in a straight line,
An electric motor assembling apparatus in which an axial direction of the shaft member is parallel to a sliding direction of the slide member when the shaft member is fixed to the slide member.   The electric motor assembling apparatus according to claim 1, wherein the other end of the rotating shaft is screwed into a tip end of the shaft member.   The shaft member and the rotation shaft are integrally rotated by rotating the shaft member in a direction to be fastened to the rotation shaft with the other end of the rotation shaft screwed to the tip of the shaft member. The electric motor assembly apparatus according to claim 2, wherein the rotation shaft is rotated relative to the shaft member by inertia force by stopping the rotation of the shaft member.   The electric motor assembling apparatus according to any one of claims 1 to 3, further comprising: a lock member that fixes the shaft member to the guide member so as not to slide.   The slide member fixes one end of the rotating shaft when the distal end of the shaft member is fixed to the other end of the rotating shaft and the proximal end of the shaft member is fixed to the sliding member. Item 5. The electric motor assembling apparatus according to any one of Items 4 to 4. The guide member is
6. The shaft according to claim 1, wherein the shaft member is rotatably supported by the cap, and the shaft member is pivotally supported at a position offset with respect to a reference shaft support position of the rotation shaft of the cap. Motor assembly equipment. A rotation axis;
A rotor fixed to the rotating shaft;
A stator having an inner peripheral surface facing the rotor at a predetermined interval;
A cylindrical stator that rotatably supports one end of the rotating shaft, and a cylindrical stator in which one end is closed by the shaft supporting part, the other end is opened, and the stator inserted from the other open end is fixed. A housing having a fixed portion and accommodating the rotating shaft, the rotor and the stator;
A cap that detachably fixes to the other end of the stator fixing portion of the housing, closes the other end of the housing, and rotatably supports the other end of the rotating shaft housed in the housing;
An electric motor assembling method for assembling an electric motor comprising:
A stator cap fixing step of fixing the stator to the cap;
A rotating shaft / rotor / cap fixing step of fixing the rotating shaft to the cap in a state where the other end of the rotating shaft to which the rotor is fixed is pivotally supported by the cap;
A cap housing fixing step of fixing a cap to which the rotating shaft, the rotor and the stator are fixed to the housing;
An electric motor assembling method comprising: The rotating shaft / rotor / cap fixing step includes a shaft member that can be inserted into a through-hole formed in the cap, and the shaft member is rotatably supported and slidable in the axial direction of the shaft member. And a supporting guide member,
The rotating shaft / rotor / cap fixing step includes:
A cap penetration step of penetrating the shaft member into the through hole of the cap;
A guide member pivoting step in which the shaft member is pivotally supported by the guide member so as to be rotatable and slidable by penetrating the shaft member on a guide member disposed outside the cap;
A rotating shaft / shaft member fixing step of fixing the other end of the rotating shaft in which the rotor is fixed to the tip of the shaft member with the axis of the rotating shaft and the axis of the shaft member as a straight line;
By sliding the shaft member in the axial direction of the shaft member in a state where the axial direction of the shaft member coincides with the axial direction of the cap, the other end of the rotating shaft fixed to the tip of the shaft member is the A cap pivoting process to be pivotally supported by the cap;
The shaft member is fixed to the guide member in a non-slidable manner while the other end of the rotating shaft fixed to the tip of the shaft member is supported by the cap, and the guide member is fixed to the cap. A guide member, a shaft member, and a cap fixing step for fixing to the outside;
The electric motor assembly method according to claim 7, comprising: In the rotating shaft / shaft member fixing step, the other end of the rotating shaft is fixed by being screwed to the tip of the shaft member,
The cap housing fixing process includes
The cap fixed to the rotating shaft is fixed to the housing with the other end of the rotating shaft being pivotally supported by the shaft member and the guide member, and one end of the rotating shaft is pivotally supported to the housing. Process,
The shaft member and the rotation shaft are integrally rotated by rotating the shaft member in a direction to be fastened to the rotation shaft with the other end of the rotation shaft screwed to the tip of the shaft member. Removing the rotary shaft from the shaft member by rotating the rotary shaft relative to the shaft member by inertia force by stopping the shaft member so as not to rotate;
The method for assembling an electric motor according to claim 8.

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