JP2006101615A - Rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide and construct a feed connector for supplying external power on a casing so that the load in the directions of insertion and withdrawal can be borne by the casing, when an external connector is inserted into and withdrawn from the feed connector. <P>SOLUTION: The casing C is so constructed that a speed reducing portion casing 7 is provided at one end of a motor portion casing 2. In this casing, the feed connector 11 is integrally formed with a brush unit 9, clamped in between the motor portion casing 2 and the speed reducing portion casing 7. A load bearing portion 12, to be fit onto a narrow neck portion 11f formed on the feed connector 11, is formed on the speed reducing portion casing 7, and the load in the directions of insertion and withdrawal produced, when an external connector is inserted into or withdrawn from the feed connector 11, is borne by the load bearing portion 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to the technical field of rotating electrical machines that constitute electrical components mounted on vehicles and the like.

  Generally, in this type of rotating electrical machine, a casing includes a cylindrical case and an end case that covers one end of the cylindrical case, and the casing includes an armature (rotary body) of the rotating electrical machine and the armature. Is connected to the armature shaft (rotating shaft) constituting the armature, accommodates a gear mechanism that decelerates and outputs the rotational driving force of the armature shaft, and supplies power to the commutator externally fitted to the armature shaft (brush) There is a device in which the armature is rotated by energizing a coil wound around the armature by supplying power to the commutator by supplying power from the outside to the power supply mechanism. In such a case, in order to supply power to the power feeding mechanism, a connecting portion (connector) for connecting the rotating electrical machine and the external power source is required. Therefore, it is conceivable to draw out the lead wire conducting to the power feeding mechanism from the casing to the outside, and provide a connector at the end of the lead-out to connect to the external connector on the external power source side. There is a problem that it is difficult to ensure waterproofness, and a problem that a connecting portion gets in the way when a rotating electric machine is provided.

As an improvement measure, a configuration in which a power feeding connector is integrally provided in the casing and an external connector is connected to the power feeding connector has been proposed. As such, for example, a casing and a power feeding connector are formed, respectively. It is sandwiched between a cylindrical case and an end case by a brush unit provided with a power supply member such as a brush for supplying power to the armature (Patent Document 1) or a power supply member for supplying power to the armature. A structure in which a holding portion is formed and a power feeding connector is integrally formed in the holding portion (Patent Document 2) has been proposed.
JP 11-146599 A JP 2003-61303 A

By the way, when the power supply connector and the external connector are engaged / disengaged, that is, when the external connector is inserted into and extracted from the power supply connector, the insertion / extraction operation force acts on the power supply connector and the external connector. However, with respect to the operation load at the time of insertion / extraction, in the former case, the operation load at the time of insertion is received by the casing, but the operation load at the time of extraction is a locking portion that engages the power supply connector and the external connector. There is a problem of strength. On the other hand, in the latter, since the insertion / extraction direction of the external connector with respect to the power supply connector is made along the axial direction of the armature shaft, the operation load at the time of insertion is received by the end case provided at the opening end of the cylindrical case. However, there is nothing to accept the operation load at the time of extraction, and there is a problem that it becomes difficult to do the work, such as it is necessary to hold it by hand, and in any case it is difficult to extract the external connector There is a problem. Further, when such a rotating electrical machine is mounted on a vehicle, first, the rotating electrical machine itself is attached to the mounting portion of the vehicle, and then the connector is connected (engaged). There is also a problem that the work must be performed in a state where the support is not sufficient, and it is difficult to engage the connector.
In addition, in these cases, when a load other than the insertion / extraction direction is applied to the wiring cord drawn out from the external connector, the load is directly received by the connection portion between the power supply connector and the external connector. There are problems to be solved by the present invention.

The present invention was created for the purpose of solving these problems in view of the above circumstances, and the invention of claim 1 is a casing in which an end case is provided at one end of a cylindrical case. In a rotating electrical machine having a rotating body and a power feeding mechanism for rotating the rotating body, the casing is provided with a power feeding connector in which an external connector for supplying power to the power feeding mechanism is detachably fitted. A load receiving portion for receiving a load of the power supply connector based on the insertion / extraction operation of the external connector is formed.
And by doing in this way, when inserting / extracting an external connector to / from the power supply connector, the load receiving portion can receive any operation load, and not only the operability is improved but also the strength is improved. Can do.
According to a second aspect of the present invention, in the first aspect, the insertion / extraction direction of the external connector in the power supply connector is set in a direction orthogonal to the rotation axis of the rotating body. The structure which receives the load of the insertion / extraction direction by the load receiving part provided in can be simplified.
A third aspect of the present invention is that in the first or second aspect, the load receiving portion is configured to receive a load of the power feeding connector in a three-dimensional direction, with an insertion / extraction direction of the external connector as a one-dimensional direction. By doing so, even if an unexpected load acts on the power supply connector, the load can be received by the receiving member, and the strength of the power supply connector can be improved.
According to a fourth aspect of the present invention, in any one of the first to third aspects, the load receiving portion is provided in the end case. By doing so, the configuration can be simplified.
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the power feeding connector is provided integrally with a power feeding mechanism unit constituting the power feeding mechanism, and the power feeding mechanism unit includes a cylindrical case and A sandwiching portion that is supported in a sandwiched manner between the end case and the end case is provided. By doing so, it is possible to achieve compactness and simplify the configuration.
A sixth aspect of the present invention provides the power feeding connector according to the fifth aspect, wherein the power feeding connector is formed through an extending portion that extends to an outer diameter side of the sandwiching portion of the power feeding mechanism unit, and the extending portion is loaded. The receiving portion is configured to support, and by doing so, it is possible to protect the power feeding mechanism unit while securing the strength of the power feeding connector.
A seventh aspect of the present invention provides the load receiving portion according to any one of the fifth to sixth aspects, wherein the load receiving portion includes an engaging portion that engages with the extending portion of the power supply connector. The engagement direction is configured to be along the rotation axis direction of the rotating body and to be orthogonal to the insertion / extraction direction of the external connector. By doing so, the configuration can be simplified. Can do.
The invention according to claim 8 is the structure according to claim 7, wherein the engagement portion includes a pair of opposing engagement pieces and is externally fitted to the power supply connector, and an end surface orthogonal to the insertion / extraction direction of the engagement piece is extended. It is set as the structure contact | abutted to the level | step-difference part formed in the protrusion part, and simplification of a structure can be achieved by doing in this way.

According to the first aspect of the present invention, when the external connector is inserted into and removed from the power supply connector, any load can be received by the load receiving portion, and the operability is improved and the strength can be increased. .
By setting it as invention of Claim 2, the structure which receives the load of the insertion / extraction direction by the load receiving part provided in the casing can be simplified.
By setting it as invention of Claim 3, the intensity | strength of an electric power feeding connector can be improved further.
With the invention of claim 4, the configuration can be simplified.
According to the invention of claim 5, it is possible to achieve compactness and simplify the configuration.
According to the sixth aspect of the invention, it is possible to protect the power feeding mechanism unit while securing the strength of the power feeding connector.
With the invention of claim 7, the configuration can be simplified.
According to the eighth aspect of the invention, the configuration can be simplified.

Next, an embodiment of the present invention will be described based on the drawings of FIGS.
In the drawings, reference numeral 1 denotes an electric motor with a speed reduction mechanism corresponding to the rotating electric machine of the present invention. The electric motor 1 is a motor unit M that is rotationally driven at a predetermined rotational speed, and the motor unit M is decelerated in rotation. It is the structure which provided integrally with the deceleration part D which performs. The motor part M includes a bottomed cylindrical motor part casing (cylindrical case of the present invention) 2 that constitutes the casing C. The motor part casing 2 has a small diameter projecting toward the base end on the bottom surface of the cylinder. A cylindrical bearing tube portion 2a is formed, and a base end portion of an armature shaft (motor shaft) 3a constituting an armature (rotating body) 3 is rotatably supported by the bearing tube portion 2a via a bearing 3b. Yes. A plurality of core materials 4a are laminated on the base end side of the armature shaft 3a to form an armature core 4, and the armature 3 is configured by winding a coil 4b around the outer periphery of the armature core 4. The armature 3 is disposed so that the outer peripheral surface of the armature core 4 is in close proximity to the permanent magnet 5 fixed to the inner peripheral surface of the motor unit casing 2. Further, a commutator 6 to which the end portion of the coil 4b is electrically connected is integrally fitted on the distal end side of the armature core 4 disposed portion of the armature shaft 3a.
On the other hand, the armature shaft 3a has a worm 3c engraved at the tip thereof, and the engraved portion of the worm 3c extends to the outside from the flange portion 2b which is the open end of the motor unit casing 2. It arrange | positions so that it may reach in the deceleration part casing 7 which comprises.

The speed reduction part casing 7 corresponds to the end case of the present invention, and is provided so as to cover the open end of the motor part casing 2. The speed reduction portion casing 7 is a gear interior in which a shaft interior portion 7a that rotatably houses a tip portion that is an engraved portion of the worm 3c of the armature shaft 3a and a gear mechanism 8 that constitutes a speed reduction mechanism is rotatably mounted. Part 7b.
The shaft interior portion 7 a is formed in a bottomed cylindrical shape with the tip side serving as the bottom, and the base end side flange portion 7 c serving as the opening end is disposed in abutting manner on the flange portion 2 b serving as the opening end of the motor unit casing 2. By setting and fixing, the opening of the motor unit casing 2 is set to cover. Further, a thrust bearing 3d that rotatably supports the tip of the armature shaft 3a is provided at the bottom of the shaft interior portion 7a.
On the other hand, the gear interior portion 7b is a bottomed cylindrical body portion formed in a cylindrical hole in a direction orthogonal to the tube length direction of the shaft interior portion 7a (the axial direction of the armature shaft 3a) so as to accommodate the gear mechanism 8. 7d and a cover portion 7e that covers the open end of the main body portion 7d. An opening 7f is formed between the outer peripheral part of the cylinder of the main body part 7d and the intermediate part in the cylinder length direction of the shaft interior part 7a. The gear mechanism 8 housed in the main body 7d includes an output shaft 8a extending in a direction orthogonal to the armature shaft 3a, and a reduction gear (worm wheel or the like) 8b externally fitted integrally with the output shaft 8a. The reduction gear 8b and the worm 3c of the armature shaft 3a are meshed with each other at the opening 7f so that the gear mechanism 8 and the armature shaft 3a are interlocked to each other. One end portion of the output shaft 8a protrudes from the gear interior portion 7b and is exposed to the outside, and the electric motor 1 is driven by appropriately connecting an actuator to the protruding portion so that the armature shaft 3a is driven. The output shaft 8a, which is an output in a state where the rotation is decelerated, is set so as to transmit to the actuator and perform a predetermined operation.

In the electric motor 1 with a speed reduction mechanism configured as described above, a power feeding mechanism unit that constitutes a power feeding mechanism of the motor part M between the motor casing 2 and the speed reduction casing 7 constituting the casing C of the present invention. The brush unit 9 corresponding to is incorporated in a state of being supported in a sandwiched manner.
The brush unit 9 includes a ring-shaped portion (in the sandwiching portion of the present invention) that is fixed in a sandwiched manner between the flange portion 2b of the opening on the motor unit casing 2 side and the flange portion 7c of the opening on the speed reduction unit casing 7 side. (Corresponding) 9a and a flat plate portion 9b which is displaced from the ring-shaped portion 9a to the cylinder bottom side of the motor unit casing 2 and forms a surface perpendicular to the armature shaft 3a. A through hole 9c through which the armature shaft 3a passes is formed. Furthermore, one end of a leaf spring 10a bent in an L shape at two places in the circumferential direction is fixed to the surface of the flat plate portion 9b on the bottom side of the motor unit casing 2 and the leaf spring 10a. The brushes 10 are respectively fixed to the other end of the through hole 9c and extending toward the center of the through hole 9c. The pair of brushes 10 is set so as to slidably come into contact with the outer peripheral surface of the commutator 6 fitted on the armature shaft 3a in a predetermined assembled state by receiving the urging force of the leaf spring 10a. ing.

  Further, the base end portions of the terminal plates 10b are integrally fixed to the base end portions of the plate springs 10a in a state where they are electrically connected to the brushes 10, respectively. A power supply connector 11 is formed in a state of being integrally formed with the brush unit 9 and is disposed on the outer peripheral side so as to be close to the outer peripheral side of the terminal plate 10b tip portion. The power supply connector 11 is formed on the gear interior portion 7b side of the speed reduction portion casing 7 when the motor portion casing 2, the speed reduction portion casing 7, and the brush unit 9 are assembled in a preset state. As shown to 1 and 2, it is provided in proximity to the gear interior portion 7b.

  That is, the brush unit 9 is formed with an extending portion 11a extending in a crank shape from the outer diameter side of the ring-shaped portion 9a, and the extending portion 11a extends to the motor unit casing 2 side. A connector portion 11b into which an external connector (not shown) is inserted and removed is formed at the tip portion. The connector portion 11b is provided so as to protrude in the outer diameter direction from the extending tip portion of the extending portion 11a facing the armature shaft 3a direction of the motor portion M, and an opening 11c for inserting the external connector is provided in the motor portion casing 2. It is formed to face the outer diameter direction. And in the extension part 11a, a pair of terminal unit 10c each connected to the terminal board 10b electrically connected to each said brush 10 is accommodated, The front-end | tip pulled around inside the connector part 11b of these terminal units 10c The part is configured to face the opening 11c. Then, by connecting an external connector to the power supply connector 11, an external power source is supplied to each brush 10 via the terminal unit 10c and the terminal plate 10b.

And in the electric motor 1 comprised in this way, the insertion / extraction direction of the external connector with respect to the electric power feeding connector 11 is a radial direction of the motor part casing 2, ie, a direction orthogonal to the armature shaft 3a. Furthermore, in the extended part 11a between the connector part 11b and the ring-shaped part 9a of the brush unit 9, the part extending in the outer diameter direction of the motor part casing 2, that is, the base end part of the connector part 11b Further, step surfaces 11d and 11e are formed between the extending portion 11 and the connector portion 11b, and a narrow neck portion 11f is formed between the step surfaces 11d and 11e, and the narrow neck portion 11f is the present invention. This corresponds to the engagement receiving portion.
Here, the narrow neck portion 11f extends from the first side surface 11g facing the gear portion casing 7 to the cylinder bottom side of the motor portion casing 2 and has a predetermined gap in the axial direction of the gear mechanism output shaft 8a. And a pair of second side surfaces 11h facing each other.

On the other hand, the speed reduction part casing 7 has a plurality of fixing parts for attachment on the outer periphery, and among these fixing parts, a fixing part formed adjacent to the flange part 7c contacting the motor part casing flange part 2b. 7g is arranged so as to oppose the narrow neck portion 11d formed between the ring-shaped portion 9a of the brush unit 9 and the power supply connector 11, and the load receiving portion of the present invention is formed on the fixing portion 7g forming portion. The part 12 is integrally formed.
The load receiving portion 12 protrudes from the fixed portion 7g to the cylinder bottom side (the axial direction of the armature shaft 3a) of the motor portion casing 2 and is formed with a pair of gaps formed in the axial direction of the gear mechanism output shaft 8a. It is comprised by the engagement piece 12a. The pair of engagement pieces 12a have inner surfaces 12b facing each other in parallel with a predetermined gap in the direction of the output shaft 8a of the gear mechanism 8 mounted in the gear inner portion 7b, and have a predetermined plate thickness. It is composed of existing plates. The load receiving portion 12 is formed in a C-shape with the engaging pieces 12a as both leg pieces and a protrusion formed on the outer peripheral surface of the gear portion casing 7 constituting the fixing portion 7g as an intermediate piece 12c. The narrow neck portion 11f is set to fit inside the C-shaped recess.

In this manner, in the state where the load receiving portion 12 is assembled so as to be fitted on the narrow neck portion 11f, the engagement piece 12a of the load receiving portion 12 has the inner surface 12b abutting against the second side surface 11h of the narrow neck portion 11f The intermediate piece 12c is in close proximity and is in contact with or in close proximity to the first side surface 11g of the narrow neck portion 11f. Further, the inner end surface 12d located on the armature shaft 3a side is on the step surface 11d on the extension portion 11a side. The outer end surface 12e that is in contact with or close to the contact and is far from the armature shaft 3a is set to contact or close to the step surface 11e on the connector part 11b side.
Thus, when the external connector is inserted into the connector portion 11b and a load in the direction of the arrow X in FIG. 3 is applied to the connector portion 11b, a pair of stepped surfaces 11e on the connector portion 11b side are applied to the load. The outer end surface 12e of the engagement piece 12a is pressed, and thereby, the load in the insertion direction is received by the engagement piece 12, that is, the gear portion casing 7.

  On the other hand, when the external connector is pulled out from the connector portion 11b and a load in the direction opposite to the arrow X acts on the connector portion 11b, the stepped surface 11d on the extending portion 11a side is caused by the pair of engaging pieces 12a. The inner end surface 12d is pressed, whereby the load in the pulling direction is received by the engagement piece 12, that is, the gear portion casing 7, and the direction of the arrow X by the external connector insertion / extraction operation is configured. The load is received by the gear casing 7 via the load receiving portion 12, and the portion of the brush unit 9 on the side where the brush 10 is disposed is not affected.

Further, in this case, when a load is applied to the wiring cord of the external connector and the load is applied to the connector portion 11b via the external connector, the arrow X direction is made one-dimensional and orthogonal to the X direction. The load in the arrow Y direction in FIG. 3 is set so that the gear casing 7 receives the intermediate portion 12c of the load receiving portion 12 in contact with the first side surface 11g of the narrow neck portion 11f. ing.
Further, when the X and Y directions are two-dimensional, the load in the arrow Z direction in FIG. 3 which is a three-dimensional direction orthogonal to these and is the axial direction of the gear mechanism output shaft 8a is a pair of engagements. Each inner side surface 12b of the piece 12a is set so as to be received by contacting the pair of second side surfaces 11h of the narrow neck portion 11f.
As a result, even if a complicated load in the three-dimensional direction acts on the connector portion 11b via the external connector due to bending of the lead wire connected to the external connector, the load is reduced by the speed reduction portion casing 7. It is comprised so that it may be received by the load receiving part 12 formed integrally.

  Reference numeral 7h denotes protrusions that are formed on the inner diameter side of the flange portion 7c of the speed reduction portion casing 7 so as to protrude toward the motor portion casing 2, and these protrusion pieces 7c are positioned at the four corners of the inner surface of the flange portion 7. Is formed. When the speed reduction unit casing 7 is incorporated in the brush unit 9, the outer surface of the projecting piece 7h is set along the inner side surface of the ring-shaped portion 9a of the brush unit 9, thereby the speed reduction unit casing 7 And the brush unit 9 can be incorporated in a positioning manner, and further, the motor piece casing 2 can be positioned by the projecting piece 7h contacting the inner surface of the motor section casing 2.

  In the embodiment of the present invention configured as described above, the electric motor 1 includes a holder unit 9 in which an external connector drawn from an external power source (not shown) is sandwiched between the motor casing 2 and the speed reduction casing 7. By inserting and connecting to the power supply connector 11 that is integrally arranged on the outer diameter side, the external power supply is supplied to the brush 10 via the terminal unit 10c and the terminal plate 10b, whereby the armature of the motor unit M is supplied. 3 rotates, and with the rotation of the armature 3, the output shaft 8a of the decelerating portion D rotates in a decelerated state, and a predetermined operation of the actuator is performed. In this case, when an external connector is inserted into or removed from the power supply connector 11, an insertion / extraction load acts on the power supply connector 11, and the arrow X is applied to the brush unit 9 in which the power supply connector 11 is integrally formed. As described above, a narrow neck portion 11f is formed between the power supply connector 11 and the brush unit 9, while the narrow neck portion 11f is integrally formed with the speed reduction portion casing 7. A load receiving portion 12 constituted by an engagement piece 12a is externally fitted and supported, and the load in the arrow X direction is a stepped surface 11d formed at both ends in the X direction of the narrow neck portion 11f, 11e can be received by the load receiving portion 12 when the end faces 12d and 12e in the arrow X direction of the engagement piece 12a come into contact with each other. As a result, the load in the insertion / removal direction of the external connector can be received by the load receiving portion 12, that is, the speed reduction portion casing 7. In addition to facilitating the insertion / extraction operation, the power supply connector 11 can be protected by increasing the strength of the power supply connector 11.

  As described above, when the present invention is implemented, when the external connector is inserted into and removed from the power feeding connector 11 formed in the casing C, the narrow neck portion 11f of the power feeding connector 11 is provided with the load receiving portion provided in the casing C. 12, the load of the insertion / extraction operation can be received by the load receiving portion 12, so that the insertion / extraction operation can be performed with good operability. When the insertion / removal direction of the X direction is the X direction, the load in the Y and Z directions can be received, so even if a complicated load in the three-dimensional direction acts on the power supply connector via the external connector, this can be received. Thus, not only the strength of the power supply connector 11 can be increased, but also the connection portion between the external connector and the power supply connector 11 can be further protected.

  Furthermore, the load receiving portion 12 is formed in a fixing portion 7g formed in the speed reduction portion casing 7 for fixing the electric motor 1, and an outer peripheral surface constituting the fixing portion 7b is an intermediate piece 12c of the load receiving portion 12. It can be used to simplify the configuration.

  In addition, in this case, since the power supply connector 11 is provided in the brush unit 9 constituting the power supply mechanism, wiring to the power supply mechanism is facilitated, and it is possible to achieve compactness.

  Further, in this device, the power supply connector 11 is formed on the outer diameter side from the ring-shaped portion 9a of the brush unit 9 via the narrow neck portion 11f, so that the configuration can be simplified and the size can be reduced. Further, in this configuration, since the thin neck portion 11f formed between the ring-shaped portion 9a and the power supply connector 11 is supported by the load receiving portion 12, the strength of the power supply connector 11 can be secured and the power supply can be ensured. The load acting on the connector 11 can be received by the path between the ring-shaped portion 9a side of the brush unit 9, that is, the site side where the members of the power feeding mechanism such as the brush 10 are provided. Is prevented, and the influence on the ring-shaped portion 9a side, which is a portion sandwiched between the motor portion casing 2 and the speed reduction portion casing 7, is prevented, and the brush 10 arrangement portion side is prevented. Can be protected.

  Further, in this case, the insertion / extraction direction of the power supply connector 11 and the external connector is a direction orthogonal to the axial direction of the armature shaft 3a and is the outer diameter direction of the motor portion casing 2, while the load receiving portion 12 is Since it is formed in a C shape composed of a pair of engagement pieces 12a and intermediate pieces 12c, the load in the insertion direction is caused by the contact between the step surface 11e on the connector part 11b side and the outer end face 12e of the engagement piece 12a. The load in the receiving and extracting directions can be received by the contact between the step surface 11d on the extending portion 11a side and the inner end surface 12d, and the configuration can be simplified.

  Moreover, in this case, when a load other than the insertion / removal direction acts on the connector portion 11b from the external connector side, the load receiving portion 12 receives the load in the three-dimensional direction when the insertion / removal direction is one-dimensional. Therefore, even when an unexpected load is applied to the power supply connector 11 via the external connector, the load is received by the load receiving portion 12 (the speed reduction portion casing 7) via the narrow neck portion 11f. It is received and does not affect the brush 10 arrangement site side of the brush unit 9. As a result, a stable brush unit 9 can be obtained, and a highly reliable rotating electrical machine can be obtained.

Needless to say, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
In the above embodiment, the pair of engaging pieces 12a are integrally provided in the speed reduction portion casing 7 as load receiving portions. However, the present invention is not limited to this, and the load receiving portion is provided separately in the casing. In short, any configuration is acceptable as long as it can accept an operation load in any direction when the external connector is inserted into and removed from the power supply connector. As such a configuration, for example, a single engaging piece is integrally provided on the speed reduction unit casing (casing), and the engaging piece is engaged with an engaging hole formed on the power supply connector side in an uneven manner. Even in this case, the operation load on the power feeding connector can be received in a state where both are engaged. Furthermore, it is also possible to employ an arrangement in which an engagement projection is provided on the power supply connector side, an engagement receiving portion that engages with the engagement projection is formed on the speed reduction portion casing side, and this is used as a load receiving portion.

It is a front view of an electric motor. It is a partial cross section rear view of an electric motor. It is a perspective view of an electric motor. 4A and 4B are a side view and a plan view of the brush unit, respectively. 5A and 5B are a rear view and a plan view of the brush unit, respectively. FIGS. 6A and 6B are a side view and a cross-sectional view taken along line XX in FIG. FIGS. 7A and 7B are a bottom view and a rear view of the speed reduction unit casing, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric motor 2 Motor part casing 2b Flange part 3 Armature 3a Armature shaft 7 Deceleration part casing 7a Shaft interior part 7b Gear interior part 7g Fixing part 8 Gear mechanism 9 Brush unit 11 Feed connector 11a Extension part 11b Connector part 11d Step surface 12 Load receiving portion 12a Engagement piece 12b Inner side surface 12c Intermediate piece 12d Inner end surface 12e Outer end surface

Claims (8)

  In a rotating electrical machine in which a rotating body and a power feeding mechanism for rotating the rotating body are housed in a casing having an end case at one end of a cylindrical case, an external power supply is supplied to the casing. A rotary electric machine in which a load receiving portion for receiving a load of a power supply connector based on an insertion / extraction operation of an external connector is formed in a casing when a power supply connector into which the connector is detachably fitted is provided.   2. The rotating electrical machine according to claim 1, wherein an insertion / extraction direction of the external connector in the power supply connector is set in a direction orthogonal to a rotation axis of the rotating body.   3. The rotating electrical machine according to claim 1, wherein the load receiving portion is configured to receive a load of the power feeding connector in a three-dimensional direction with an insertion / extraction direction of the external connector as a one-dimensional direction.   4. The rotating electrical machine according to claim 1, wherein the load receiving portion is provided in an end case.   5. The power feeding connector according to claim 1, wherein the power feeding connector is provided integrally with a power feeding mechanism unit constituting the power feeding mechanism, and the power feeding mechanism unit is sandwiched between the cylindrical case and the end case. A rotating electrical machine configured to include a sandwiching portion supported in a shape.   6. The power feeding connector according to claim 5, wherein the power feeding connector is formed through an extending portion that extends to an outer diameter side of the holding portion of the power feeding mechanism unit, and the load receiving portion supports the extending portion. The rotating electrical machine that is configured.   7. The load receiving portion according to claim 5, wherein the load receiving portion is configured by an engaging portion that engages with an extending portion of the power feeding connector, and an engaging direction between the engaging portion and the extending portion is A rotating electrical machine configured to be along a rotation axis direction of a rotating body and orthogonal to an insertion / extraction direction of an external connector.   The step portion according to claim 7, wherein the engagement portion includes a pair of opposing engagement pieces and is externally fitted to the power feeding connector, and an end surface orthogonal to the insertion / extraction direction of the engagement piece is formed in the extension portion. Rotating electric machine configured to abut on.

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