JP2017158274A - Electric motor and air blower having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air blower capable of reducing stress applied to a lead wire connection portion without adding any member.SOLUTION: An electric motor includes a stator, a rotor, a housing A, and a housing B. Each of the housing A and the housing B has a flange surface which is flush with a top surface opening in a bottomed cylindrical shape and projects in an outer peripheral direction away from a rotation axis with a peripheral side surface as a start point, and a hollow cylindrical erected portion which is erected from the flange surface to one opening face in a direction to the bottom surface of the bottomed cylindrical shape and has a notch on the side surface. The erected portion forms a holding hole for pinching a lead wire from both sides in the peripheral direction of the bottomed cylindrical shape by bringing the housing A and the housing B into contact with each other at the respective top surface openings thereof.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an electric motor having a structure for taking out a lead wire out of a housing.

  For example, an electric motor such as a fan having a swing function prevents propagation of external stress from the lead wire to the connecting portion inside the motor when the lead wire inside the motor is taken out of the housing. It is necessary to ensure the punching strength.

  For this reason, conventionally, the lead wire is fixed to the housing or case using an auxiliary member such as a binding band or cord clip, thereby preventing the propagation of the stress of the lead wire to the connecting portion, and removing the lead wire. The strength is ensured (see, for example, Patent Document 1).

  Hereinafter, the electric motor will be described with reference to FIG.

  FIG. 13 is a front view of an electric motor according to a conventional embodiment. The electric motor 100 is formed of a shaft 106, a housing 107, and a case 103 extending from the housing, and a lead wire holding part 101 in which a lead wire 102 taken out from a lead wire outlet 105 is formed into a case 103 by a binding band 104. It has a structure that binds to. Thereby, the frictional force with respect to the lead wire pulling force can be increased, and the lead wire pulling strength can be improved.

Japanese Patent Laid-Open No. 10-80092

  In such a conventional electric motor, in order to secure the lead wire pulling strength, the lead wire is fixed to the case or the housing of the electric motor by the binding band 104, so that the member cost of the binding band is generated. Moreover, the process which attaches a member and clamp | tightens a lead wire is needed, and there existed a subject that processing cost increased.

  This invention improves such a conventional subject, and it aims at providing the electric motor which can reduce the stress added to a lead wire connection part, and a blower provided with the same, without adding a member.

  In order to achieve this object, an electric motor according to the present invention includes a stator to which a lead wire is connected, a rotor having a rotation shaft located in a hole provided in an inner periphery of the stator, A cylindrical housing A with a bottom that holds the stator from one end in the axial direction of the rotating shaft and rotatably holds the rotor, and holds the stator from the other end in the axial direction of the rotating shaft. A bottomed cylindrical housing B that rotatably holds the rotor, and the housing A and the housing B are respectively in the same plane as the top surface opening in the bottomed cylindrical shape and from the rotation axis starting from the outer peripheral side surface. A flange surface protruding in the outer circumferential direction, and a hollow cylindrical standing portion standing from one side of the flange surface toward the bottom surface of the bottomed cylindrical shape and having a notch on the side surface; The standing portion is configured to form a holding hole for holding the lead wire from both sides in the circumferential direction of the bottomed cylindrical shape by bringing the housing A and the housing B into contact with each other at the top surface opening. It achieves the intended purpose.

  According to the present invention, it is possible to obtain an effect that the stress applied to the lead wire connecting portion can be reduced without adding a member.

Sectional drawing which shows the electric motor which concerns on Embodiment 1, 2 of this invention The perspective view of the housing upper part of the electric motor which concerns on Embodiment 1. FIG. The perspective view of the housing lower part of the electric motor which concerns on Embodiment 1. FIG. The perspective view at the time of contacting the housing upper part and the lower part of the electric motor which concerns on Embodiment 1 with the top | upper surface opening It is an upper surface enlarged view in the standing part periphery. The top view which shows the direction which clamps the lead wire of the electric motor which concerns on Embodiment 1. FIG. Front view after clamping of lead wire of electric motor according to Embodiment 1 The perspective view of the housing upper part of the electric motor which concerns on Embodiment 2. FIG. The perspective view of the housing lower part of the electric motor which concerns on Embodiment 2. FIG. The perspective view at the time of contact | abutting the housing upper part and the lower part of the electric motor which concerns on Embodiment 2 with the top | upper surface opening The front view which shows the direction which clamps the lead wire of the electric motor which concerns on Embodiment 2. FIG. Front view after clamping the lead wire of the electric motor according to Embodiment 1 Plan view showing a conventional electric motor

  The electric motor according to the present invention includes a stator to which a lead wire is connected, a rotor having a rotating shaft located in a hole provided in an inner periphery of the stator, and the fixing from one end in the axial direction of the rotating shaft. A bottomed cylindrical housing A that holds the rotor and rotatably holds the rotor, and holds the stator from the other end in the axial direction of the rotating shaft and holds the rotor rotatably. A bottom cylindrical housing B, each of the housing A and the housing B being flush with the top surface opening in the bottomed cylindrical shape and projecting in the outer circumferential direction starting from the outer circumferential side surface and separating from the rotating shaft; A hollow tube-like standing portion that is erected from the flange surface toward one bottom surface in the bottomed cylindrical shape and has a notch on a side surface, and the standing portion includes the housing A and the Ujingu forming a holding hole for clamping B and the circumferential sides of the bottomed cylindrical said lead wire by contact with the respective top openings.

  Thereby, the stress added to a lead wire connection part can be reduced, without adding a member. In addition, for example, when employed in a fan having a swing function, the stress applied to the lead wire connecting portion by swinging can be reduced by this configuration. In other words, the lead wire pulling strength can be strengthened, the necessary members can be reduced, the lead wire holding work can be simplified, and the lead wire pulling strength can be improved in the lateral direction of the standing portion of the hollow tube type. Play.

  A stator connected to a lead wire; a rotor positioned in a hole provided in an inner periphery of the stator; having a rotation shaft; and holding the stator from one end in an axial direction of the rotation shaft A bottomed cylindrical housing A that rotatably holds the rotor, and a bottomed cylindrical housing that holds the stator from the other end in the axial direction of the rotating shaft and rotatably holds the rotor. B, and the housing A and the housing B are respectively provided with a flange surface projecting in the outer circumferential direction from the rotation axis starting from the outer peripheral side surface that is flush with the top surface opening of the bottomed cylindrical shape, and from the flange surface. A cut-and-raised portion that bulges toward the bottom surface of the bottom cylindrical shape, and the cut-and-raised portion abuts the housing A and the housing B from above and below at the respective top surface openings. It may be an electric motor which forms a holding hole for clamping the lead wire from the vertical direction.

Thereby, the stress added to a lead wire connection part can be reduced, without adding a member. In addition, the lead-out strength of the lead wire against the stress in the vertical direction can be improved with respect to the cut and raised portion that bulges from the flange surface toward the bottom surface of the bottomed cylindrical shape. An insertion hole through which the lead wire is inserted is provided on a side surface, and a line connecting the rotation shaft and the holding hole and a line connecting the rotation shaft and the insertion hole exceed 0 degree in a sectional view of the rotation shaft. You may have an angle of 45 degrees or less.

  Thus, by bringing the lead wire into contact with the insertion hole, a frictional force is generated at the contact portion, so that the lead wire pull-out strength can be improved.

  Further, the lead wire may have a slack between the insertion hole and the holding hole.

  As a result, when a stress exceeding the clamping effect of the standing portion of the hollow tube type is applied to the lead wire, the lead wire connection inside the electric motor is caused by slack between the insertion hole and the holding hole. It is possible to reduce the instantaneous stress applied to the part and to reduce the damage of the connection part. Moreover, the said lead wire has an effect that another member can be attached to the said lead wire using the slack between the said insertion hole and the said holding hole.

  In addition, a flange surface provided in the housings A and B may not be provided, and a mechanism for holding the lead wire in place other than the flanges of the housings A or B may be provided.

  As a result, the space provided with the flange of the housing can be reduced, and the size of the housing or the case can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention.
Moreover, the same code | symbol is attached | subjected about the same site | part through all drawings, and description is abbreviate | omitted. Furthermore, in each drawing, the description of the details of each part not directly related to the present invention is omitted.
(Embodiment 1)
1 is a cross-sectional view showing an electric motor according to Embodiment 1 of the present invention.

  Hereinafter, the internal configuration of the electric motor according to the present embodiment will be described with reference to FIG.

  The electric motor 1 is an internal rotation type AC motor, and is used as a drive source of an electric fan, for example.

  The electric motor 1 includes a rotor 6, a stator 2, and a shaft 9 and is covered with a housing A 7 and a housing B 8, that is, the housing A 7 and the housing B 8 constitute an outer shell of the electric motor 1.

  The rotor 6 is obtained by pouring aluminum alloy into the rotor core and solidifying it. The rotor 6 has a cylindrical shape, and is fixed to a shaft 9 that penetrates the top and bottom surfaces of the cylindrical shape.

  The shaft 9 has a cylindrical rod shape, and a bearing 10a is inserted on the top surface side of the rotor 6 and a bearing 10b is inserted on the bottom surface side.

  The bearing 10a and the bearing 10b include a plurality of inner rings that are cylindrical rings, an outer ring that is a cylindrical ring and larger in diameter than the inner ring, and each of the inner ring and the outer ring is rotatably supported. And rolling elements. The bearing 10a has an outer ring fixed to the bottom surface of the housing A7, and the bearing 10b has an outer ring fixed to the bottom surface of the housing B8. The bearing 10a and the bearing 10b are fixed to the shaft 9, respectively.

  The stator 2 has a cylindrical shape and includes a stator core 15, an insulator 3, a winding 4, and a terminal block 5.

  The stator core 15 is a cylindrical stator core configured by stacking donut-shaped iron plates, and the rotor 6 is positioned in a central cylindrical space, that is, an inner hole. That is, the shaft 9 connected to the rotor 6 serves as a rotation axis, and the rotor 6 rotates. The stator core has a plurality of slots penetrating from the top surface to the bottom surface, that is, a space for winding the winding.

  The insulator 3 is a resin-molded insulator and is inserted into the slots of the stator core 15 so as to face each other in the axial direction, that is, from the top surface and the bottom surface in the cylindrical shape.

  The winding 4 is a copper wire with an insulating coating, and is wound on the insulator 3 inserted in the slot of the stator core 15 so as not to contact the stator core.

  The terminal block 5 is a resin-molded insulator and is provided, for example, on the top surface side of the stator core 15. A terminal hole is provided on the terminal block 5, and a terminal provided at an end of the wound winding protrudes upward from the terminal hole, that is, in a direction away from the stator core 15. Lead wires 12 are connected to the winding terminals protruding from the terminal block 5 by soldering, and lead wire joints 13 are formed on the terminal block 5.

  Next, the housing A7 and the housing B8 constituting the outline of the electric motor 1 will be described with reference to FIGS. 2 shows a housing A7 that forms the upper part of the outer shell of the electric motor 1, and FIG. 3 shows a housing B8 that forms the lower part of the outer shell of the electric motor 1. The upper part and the lower part here indicate the upper part and the lower part on the drawing, and do not indicate that they are positioned vertically above or below during operation.

  The housing A7 is a bottomed cylindrical metal having a center hole 20a that is a through hole at the center of the bottom surface, and the outer ring of the bearing 10a described in FIG. 1 is fixed to the housing A7. The housing A7 is provided with four flanges 17a at equal intervals protruding from the outer peripheral side surface in the same plane as the top surface opening toward the outer peripheral direction away from the rotation axis of the rotor 6 shown in FIG. Yes. The housing A7 includes a lead wire outlet 16 as an insertion hole on the outer peripheral side surface.

  The flange 17a has a flat plate shape, and the flange surface in the flat plate shape forms the same plane as the top surface opening. The flanges 17a are all provided with screw holes 19a. One of the flanges 17a is provided with a standing portion 18a from the bottom side flange surface of the housing A7 toward the bottom surface.

  The standing portion 18a includes a hollow cylindrical standing portion 18a that is erected from the flange surface toward the bottom surface of the housing A7 with one opening surface facing and having a notch on the side surface. The standing portion 18a has a three-dimensional U-shape, and an opening in the U-shape corresponds to a side notch. That is, the standing portion 18a is a hollow cylinder on the side having the notch portion with respect to the shaft 9 inserted into the housing A7, that is, the center line 22 connecting the center of the rotating shaft 30 and the flange 17a having the standing portion 18. The center of the semicircle to be formed exists, and the semicircle forms part of the circle on the side (the bottom side in the U-shape) that does not have a notch, beyond the center line. Further, the standing portion 18a penetrates from the rotation axis direction, that is, from the upper part to the lower part in FIG. 2, and the upper opening in FIG. 2 corresponds to “one opening surface”. A lead wire insertion hole serving as a holding hole is configured by causing the standing portion 18a and a standing portion of the housing B8, which will be described later, to be in close proximity to each other, and the details will be described later. A screw hole 19a is disposed on the flange 17a and on the outer peripheral side of the standing portion 18a.

  The lead wire outlet 16 is provided as a space cut out in the direction toward the bottom surface with the top surface opening of the housing A7 as an opening. 45 degrees (θ) from the center line 22 connecting the flange 17a and the rotating shaft 30 of the housing A7, located in a circumferential direction of the housing A7 and shifted in a direction where the notch of the standing portion 18a is not provided. doing. That is, the center line 22 that connects the rotating shaft 30 and the holding hole and the line that connects the rotating shaft 30 and the insertion hole are provided with a predetermined angle θ, that is, 45 degrees in a cross-sectional view of the rotating shaft 30. .

  As shown in FIG. 3, the housing B8 is a bottomed cylindrical metal like the housing A7, and has a center hole 20b that is a through hole at the center of the bottom surface, and four flanges 17b at equal intervals on the outer periphery. It has. The flange 17b has the same configuration as the flange 17a, the standing portion 18b has the same configuration as the standing portion 18a, and the center hole 20b has the same configuration as the center hole 20a. The housing B8 and the housing A7 have the same shape, but the housing B8 differs from the housing A7 only in that the lead wire outlet 16 is not provided.

  Next, an outline that can be constituted by the housing A7 and the housing B8 will be described with reference to FIGS. FIG. 4 is a perspective view when the housing A7 and the housing B8 are brought into contact with each other through the top opening. FIG. 5 is an enlarged top view at the periphery of the standing portion of FIG.

  The electric motor 1 is configured by arranging the stator 2, the rotor 6, and the like at the positions described above, and covering them by bringing the housing A 7 and the housing B 8 into contact with each other through the top surface openings. At this time, the flange 17a and the flange 17b provided with the standing portion 18a and the standing portion 18b are arranged to face each other.

  When the flange 17a and the flange 17b provided with the upright portion 18a and the upright portion 18b are arranged to face each other, the two upright portions 18a and the upright portion 18b are held by their bottom sides facing each other facing each other. A lead wire insertion hole 21 which is a hole is formed. The standing portion 18a has a center of a semicircle on the side having the notch, and the semicircle forms a part of the circle on the bottom side of the U shape beyond the center line. Is as described above. With this configuration, the lead wire insertion hole 21 has a substantially elliptical shape having a minor axis in the circumferential direction of the housing A7. The short axis is smaller than the cross-sectional diameter of the lead wire 12.

  The above is the configuration of the electric motor 1.

  Subsequently, an operation process for holding the lead wire 12 between the standing portion 18a and the standing portion 18b will be described with reference to FIGS. 6 is a plan view showing a direction in which the lead wire of the electric motor 1 is clamped, and FIG. 7 is a front view after the lead wire of the electric motor 1 is clamped.

  First, the rotor 6 and the stator 2 are enclosed in the internal space of the housing A7 and the housing B8 with the top surface openings of the housing A7 and the housing B8 facing each other. At this time, the lead wire 12 is taken out from the lead wire outlet 16 and the upright portion 18a and the upright portion 18b are opposed to each other.

  Next, the lead wire 12 taken out from the lead wire outlet 16 is passed through the standing portion 18a and the standing portion 18b in this order. Note that the lead wire 12 is slackened between the lead wire outlet 16 and the standing portion 18a.

  At this time, when the lead wire 12 passes through the standing portion 18a, the lead wire outlet 16 is located at a position deviated 45 degrees in the circumferential direction of the housing from the line connecting the flange 17a and the center of the housing A7. When the lead wire 12 taken out from the lead wire outlet 16 is passed through the standing portion 18 a, the lead wire 12 needs to be bent in the circumferential direction of the electric motor 1. Therefore, since the lead wire 12 contacts the flange 33 of the lead wire outlet 16, the frictional force of the lead wire 12 is improved at the contact portion. Therefore, even when a stress is applied to the lead wire 12, the propagation of stress can be prevented at the contact portion with the flange 33, and the stress applied to the lead wire joint portion 13 can be reduced.

  In this state, the top surface openings of the housing A7 and the housing B8 are brought into contact with each other to enclose the rotor 6, the stator 2, and the like. In this state, the shaft 9 is in a state of passing through the center hole 20a and the center hole 20b.

  Thereafter, the housing A7 and the housing B8 are rotated in the clamping direction of FIG. 6, that is, in a direction in which each flange is brought closer to both sides of the cylindrical shape in the circumferential direction. As a result, a lead wire insertion hole 21 having a nearly circular shape is formed, the short axis of the lead wire insertion hole 21 is further reduced, and the lead wire 12 is held between the standing portions 18a and 18b. In this state, by screwing the screw holes 19a and 19b formed in the flanges 17a and 17b with the screw 11, the lead wire 12 is firmly fixed.

  At this time, the lead wire 12 that has passed through the standing portion 18b prevents the propagation of stress to the lead wire joint portion 13 due to the circumferential movement of the housing A7, and the lead wire 12 to the lead wire joint portion 13 It becomes possible to further strengthen the pull-out strength. Further, when the lead wire 12 is pulled in the axial direction of the housing A7, the slack from the lead wire outlet 16 to the standing portion 18a is absorbed. Propagation to can be prevented.

  Further, since the work can be performed while inserting the housings A7 and B8 into the shaft 9, the time required for the work can be reduced as compared with the work of fixing the lead wires with the binding band.

Further, since the standing portion 18a and the standing portion 18b, which use the lead wires for fixing, can integrally form the housing A7 and the housing B8 at the time of molding the mold, there is no processing cost and a conventional binding band is not used. The member cost of the binding band can be reduced.
(Embodiment 2)
FIG. 8 shows a housing A23 which is an upper part of the outer shell of the electric motor 1 in the second embodiment. FIG. 9 shows a housing B24 which is an outer lower portion of the electric motor 1 in the second embodiment. FIG. 10 is a perspective view when the housing A23 and the housing B24 are brought into contact with each other at the top surface opening.

  In the present embodiment, the housing A7 and the housing B8 in the first embodiment are changed to the housing A23 and the housing B24, and other configurations of the electric motor 1 are the same as those in the first embodiment.

  The housing A23 is different from the housing A7 shown in the first embodiment in that one of the four flanges 17a provided on the outer periphery includes the flange 26a.

  The flange 26a includes a cut-out portion 28a instead of the standing portion 18a of the flange 17a.

  The cut-out portion 28a includes a bulging portion 34a that bulges toward the bottom surface of the housing A23, and a cutout portion 29a on the side surface.

  The bulging portion 34a has an arch shape in the circumferential direction as viewed from the side of the housing A23. The top portion of the arch shape bulges toward the bottom surface of the housing A23, that is, has a tunnel shape toward the rotation axis direction.

  The cutout portion 29a is located on the inner peripheral side of the bulging portion 34a, and is provided in a shape in which the flange 26a is cut out from the circumferential direction of the housing A23.

  The housing B24 shown in FIG. 9 has the same shape as the housing A23, but the housing B24 differs from the housing A23 only in that the lead wire outlet 16 is not provided.

  The housing B24 may be on a flat plate without providing the notch 29b.

  The above is the configuration of the housing that forms the outline of the electric motor 1 in the present embodiment.

  Next, an operation process for holding the lead wire 12 between the cut-out portion 28a and the cut-out portion 28b will be described with reference to FIGS.

  First, the rotor 6, the stator 2, etc. are enclosed in the internal space of the housing A23 and the housing B24 with the top surface openings of the housing A23 and the housing B24 facing each other. At this time, the lead wire 12 is taken out from the lead wire outlet 16 and the cut-out portion 28a and the cut-out portion 28b are arranged facing each other.

  Next, the lead wire 12 taken out from the lead wire outlet 16 is drawn into the lower portion of the bulging portion 34a from above the cutout portion 29b. Note that the lead wire 12 is slackened between the lead wire outlet 16 and the bulging portion 34a.

  At this time, when the lead wire 12 passes through the bulging portion 34a, the lead wire outlet 16 is located at a position deviated 45 degrees in the housing circumferential direction from the line connecting the flange 26a and the center of the housing A23. When the lead wire 12 taken out from the lead wire outlet 16 is passed through the bulging portion 34 a, it is necessary to bend the lead wire 12 in the circumferential direction of the electric motor 1. Therefore, since the lead wire 12 contacts the flange 33 of the lead wire outlet 16, the frictional force of the lead wire 12 is improved at the contact portion. Therefore, even when a stress is applied to the lead wire 12, the propagation of stress can be prevented at the contact portion with the flange 33, and the stress applied to the lead wire joint portion 13 can be reduced.

  In this state, the top surface openings of the housing A23 and the housing B24 are brought into contact with each other to enclose the rotor 6, the stator 2, and the like. In this state, the shaft 9 is in a state of passing through the center hole 20a and the center hole 20b.

  Thereafter, the lead wire 12 is screwed to the flange-like screw hole 19a and the screw hole 19b so that the lead wire 12 has an arch-shaped inner periphery of the cut-out portion 28a and the cut-out portion 28b (the bulging portion 34a and the bulging portion 34b). Fixed on the side.

  At this time, since the cross-sectional diameter of the lead wire insertion hole 31 formed by the cut-out portion 28a and the cut-out portion 28b is smaller than the cross-sectional diameter of the lead wire 12, the lead wire 12 is formed by the cut-out portion 28a and the cut-out portion 28b. It is held when sandwiched from above and below. As a result, the lead wire 12 can prevent the propagation of stress to the lead wire joint portion 13 against the tensile force in the axial direction and the circumferential direction of the electric motor 1 and can further strengthen the lead wire pull-out strength.

  Further, as in the first embodiment, since the conventional binding band is not required, the member cost of the binding band can be reduced and the workability of fixing the lead wire can be improved.

  The electric motor according to the present invention can enhance the lead wire pulling strength, reduce the number of necessary members, and simplify the lead wire holding operation, and can be applied to, for example, an electric motor for driving a fan having a swing function.

DESCRIPTION OF SYMBOLS 1 Electric motor 2 Stator 3 Insulator 4 Winding 5 Terminal block 6 Rotor 7,23 Housing A
8,24 Housing B
9 Shaft 10a, 10b Bearing 11 Screw 12 Lead wire 13 Lead wire joint 15 Stator core 16 Lead wire outlet 17a, 17b, 26a Flange 18, 18a, 18b Standing portion 19a, 19b Screw hole 20a, 20b Center hole 21 Lead wire insertion hole 22 Center line 28a, 28b Cut-out portion 29a, 29b Notch portion 30 Rotating shaft 31 Lead wire insertion hole 33 淵 34a, 34b Expansion portion 100 Electric motor 101 Lead wire holding portion 102 Lead wire 103 Case 104 Binding band 105 Lead wire outlet 106 Shaft 107 Housing

Claims (5)

A stator with a lead wire connected;
A rotor having a rotation axis located in the inner hole of the stator;
A cylindrical housing A with a bottom that holds the stator from one end in the axial direction of the rotary shaft and rotatably holds the rotor;
A bottomed cylindrical housing B holding the stator from the other end in the axial direction of the rotating shaft and holding the rotor rotatably;
The housing A and the housing B each have a flange surface protruding in the outer peripheral direction from the rotation axis starting from an outer peripheral side surface that is flush with the top surface opening in the bottomed cylindrical shape,
A hollow cylindrical standing part standing upright from the flange surface toward the bottom surface in the bottomed cylindrical shape with one opening face and having a notch on the side surface;
The standing portion is
The electric motor which forms the holding hole which clamps the said lead wire from the circumferential direction both sides in a bottomed cylindrical shape by contact | abutting the said housing A and the said housing B by each top surface opening. A stator with a lead wire connected;
A rotor having a rotation axis located in the inner hole of the stator;
A cylindrical housing A with a bottom that holds the stator from one end in the axial direction of the rotary shaft and rotatably holds the rotor;
A bottomed cylindrical housing B holding the stator from the other end in the axial direction of the rotating shaft and holding the rotor rotatably;
The housing A and the housing B each have a flange surface protruding in the outer peripheral direction from the rotation axis starting from an outer peripheral side surface that is flush with the top surface opening in the bottomed cylindrical shape,
A cut and raised portion that bulges from the flange surface toward the bottom surface in the bottomed cylindrical shape,
The cut and raised portion is
The electric motor which forms the holding hole which clamps the said lead wire from the said up-down direction by contact | abutting the said housing A and the said housing B from the up-down direction by each top surface opening. An insertion hole for inserting the lead wire on the side surface of the housing A;
3. The electric motor according to claim 1, wherein a line connecting the rotation shaft and the holding hole and a line connecting the rotation shaft and the insertion hole have a predetermined angle in a sectional view of the rotation shaft. The lead wire is
The electric motor according to any one of claims 1 to 3, wherein a slack is formed between the insertion hole and the holding hole. A blower comprising the electric motor according to any one of claims 1 to 4.

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