JP6549457B2 - Power supply structure for electric motor - Google Patents

Description

  The present invention relates to a power supply structure for supplying power to an electric motor from a power supply via a bus bar.

  For example, since a door lock device for locking / unlocking a vehicle door to a vehicle body is required to have high waterproofness and anti-theft function, resin sealed in such a door lock device in recent years is required. The structure which arrange | positions a several lever, an electric motor, etc. in the housing (base member) made from is employ | adopted.

  By the way, although an electric motor is used as a drive source in the door lock device, a method of supplying power to the electric motor from a power supply through a bus bar (conductive terminal) is adopted as a power supply structure to the electric motor. . In this case, the bus bar is integrally formed on the housing by insert molding.

  However, as described above, in order to integrally form the bus bar in the housing by insert molding, a process such as attaching the bus bar in advance to the housing is necessary, and since the insert molding itself is expensive, the manufacturing cost is increased. There was a problem that it became high.

  Then, the structure shown to FIG.12 and FIG.13 is proposed by patent document 1 as an electric-power-feed structure to an electric motor.

  That is, FIG. 12 is a perspective view of an electric motor and a bus bar showing a power feeding structure to an electric motor proposed in Patent Document 1, and FIG. 13 is a partial sectional view showing a fixing structure of the bus bar in the power feeding structure. As shown, circular engagement locking holes 105a and 106a are respectively formed at one end of each of two bus bars 105 and 106 forming an L shape of conductive metal, and one end of the harness 120 is formed at the other end. They are connected by terminals 121 respectively. The other end of the harness 120 is electrically connected to a power source (not shown) such as a battery.

  Further, plug convex portions 105B and 106B are bent at a right angle and erected at an intermediate position between the bus bars 105 and 106, respectively. Each of the bus bars 105 and 106 is engaged with the engagement projections 102a and 102b integrally erected on the housing (case member) 102 as shown in FIG. 13 with the fitting locking holes 105a and 106a formed at one end thereof. It is fixed to the housing 102 by engagement.

  On the other hand, as shown in FIG. 12, receptacle recesses 104a and 104b are formed at two locations on the lower surface of electric motor 104 (two locations corresponding to plug protrusions 105B and 106B of bus bars 105 and 106). By inserting and locking the plug convex portions 105B and 106B of the bus bars 105 and 106 in the receptacle concave portions 104a and 104b, the electric motor 104 and the bus bars 105 and 106 are electrically connected. Therefore, electric power is supplied to the electric motor 104 from a power supply (not shown) through the harness 120 and the bus bars 105 and 106, and the electric motor 104 is rotationally driven.

  According to such a power supply structure, since the insert molding of the bus bars 105 and 106 is not required, the manufacturing cost can be reduced.

Japanese Utility Model Publication 7-032147

  However, in the feed structure shown in FIGS. 12 and 13 proposed in Patent Document 1, the plug convex portions 105B and 106B of the bus bars 105 and 106 may be arranged to be inclined with respect to the housing 102, and such In this case, it is not easy to assemble the electric motor 104 by inserting the plug convex portions 105B and 106B of the bus bars 105 and 106 into the receptacle concave portions 104a and 104b formed thereon, and the assembling property of the electric motor 104 is The problem of getting worse occurs.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a power feeding structure to an electric motor capable of improving the assemblability of the electric motor by preventing the inclination of the plug convex portion of the bus bar. It is.

In order to achieve the above object, the invention according to claim 1 is a structure in which an electric motor and a bus bar are disposed on a base member, and power is supplied to the electric motor from a power supply via the bus bar,
The plug convex portion is formed by bending the plug convex portion at a right angle at one end of the main body portion extending along the inner surface of the base member of the bus bar, and the plug convex portion is inserted into a receptacle concave portion formed in the electric motor In a feed structure to an electric motor formed by electrically connecting a bus bar and the electric motor,
The plug convex portion of the bus bar is provided with a locking piece extending outward in the width direction than a boundary portion which is a boundary portion with the plug convex portion of the main body portion.
The base member has a fitting groove and is provided on both sides in the thickness direction of the locking piece to support the locking piece, and the locking piece is fitted in the fitting groove. , The locking piece is locked .

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, a notch portion for avoiding interference with a part of the support portion is formed in the boundary portion of the main body portion. Do.

  The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the locking piece is formed so as to protrude from the plug convex part along the planar direction of the plug convex part. I assume.

  The invention according to claim 4 is that, in the invention according to claim 3, a portion of the plug convex portion extending outward in the width direction than the boundary portion of the main body portion of the bus bar is configured as the locking piece. It features.

  The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, a notch is formed in the base end portion of the plug convex portion.

  According to the first aspect of the invention, since the plug convex portion of the bus bar is supported in the thickness direction by the support portion of the base member via the locking piece extended thereto, the direction of the plug convex portion Is corrected and its inclination is suppressed. As a result, when assembling the electric motor, the plug convex portion of the bus bar is smoothly and precisely inserted and locked in the receptacle concave portion of the electric motor, so that the assembling property of the electric motor is enhanced. Further, since the locking pieces provided on the plug convex portion of the bus bar are provided extending outward in the width direction than the boundary portion which is the boundary portion with the plug convex portion of the main portion of the bus bar, the support of the base member It is possible to arrange the portion next to the connecting portion of the main body portion of the bus bar, and the locking piece can be fitted into the supporting portion of the base member only by assembling the bus bar to the base member.

  According to the second aspect of the present invention, the notch portion for avoiding the interference with a part of the support portion of the base member is formed in the boundary portion between the main body portion of the bus bar and the plug convex portion. As a part of the support part is disposed in the part, the engagement margin between the plug convex part and the support part can be increased, and the power supply structure can be compactly formed in a small space. Further, since it is not necessary to project the locking piece from the plug convex portion, the plug convex portion can be easily formed, and the feeding structure can be compactly formed in a smaller space.

  According to the third aspect of the present invention, the plug convex portion and the locking piece of the bus bar are formed on the same plane, and the plug convex portion is bent at a right angle to the main body portion to process the locking piece. The bus bar provided can be easily manufactured, and the manufacturing cost can be reduced.

  According to the invention of claim 4, since a part of the plug convex portion of the bus bar is configured as the locking piece, the locking piece does not protrude from the plug convex portion, and the plug convex portion is easily formed. And the feed structure can be made more compact in a small space.

  According to the invention of claim 5, since the notch is formed in the base end portion of the plug convex portion formed in the bus bar, the plug convex portion is easily formed by bending one end of the main body portion with a relatively small force. be able to.

It is a top view which shows the internal structure of the door lock apparatus provided with the electric power feeding structure to the electric motor which concerns on this invention. It is a fragmentary perspective view showing the state before assembling the electric motor of the door lock device provided with the feed structure to the electric motor concerning the present invention. FIG. 6 is a partial perspective view of the lower case showing a state before the bus bar of the door lock device provided with the power supply structure to the electric motor according to the present invention and the electric motor. It is a top view of the plug convex part part of a bus bar. It is a front view of the plug convex part of a bus bar. It is a partial top view which shows the state which the plug convex part of the bus-bar has engaged with the support part of lower case. It is a fragmentary sectional view which shows the attachment state of a motor. It is a figure similar to FIG. 6 which shows another form 1 of this invention. It is a figure similar to FIG. 7 which shows another form 1 of this invention. It is a figure similar to FIG. 6 which shows another form 2 of this invention. It is a figure similar to FIG. 7 which shows another form 2 of this invention. FIG. 5 is a perspective view of an electric motor and a bus bar showing a power feeding structure to the electric motor proposed in Patent Document 1; It is a fragmentary sectional view which shows the fixing structure of the bus-bar in the electric power feeding structure to the electric motor proposed in patent document 1. FIG.

  Embodiments of the present invention will be described below based on the attached drawings.

  FIG. 1 is a plan view showing an internal structure of a door lock device having a power feeding structure to an electric motor according to the present invention, and FIG. 2 is a portion showing a state of the door lock device having the power feeding structure before assembling 3 is a partial perspective view of the lower case showing the state before the electric busbar and the electric motor are assembled of the door lock device having the same power supply structure, FIG. 4 is a plan view of the plug convex portion of the bus bar, FIG. 6 is a partial plan view showing a state in which the plug convex portion of the bus bar is engaged with the support portion of the lower case, and FIG. 7 is a partial cross-sectional view showing a mounting state of the motor.

  In the present embodiment, the present invention is applied to a door lock device of a vehicle, and the door lock device 1 shown in FIG. 1 is attached to the lower case 2 as a base member and the upper portion of the lower case 2 The latch mechanism 3, the electric motor 4 as a drive source, the first bus bar 5 and the second bus bar 6 for supplying power to the electric motor 4, the worm wheel 7, and the lock inside a housing constituted by an upper case (not shown) The lever 8, the link lever 9, the inside lock lever 10, the inside open lever 11 and the like are accommodated.

  The electric motor 4 is horizontally installed horizontally in a flat motor holding portion 2A (see FIG. 2) formed on the inner surface of the lower case 2, and a worm 12 having a small diameter is attached to the output shaft The worm 12 is in mesh with the large diameter worm wheel 7. Here, the worm wheel 7 is rotatably supported at its central portion by the shaft 13, and a cam surface 7a is formed thereon.

  An intermediate portion of the lock lever 8 is rotatably supported on the lower case 2 by a shaft 14, and a cam follower 15 engaged with the cam surface 7 a formed on the worm wheel 7 is provided at one end of the lock lever 8. There is. The other end of the lock lever 8 is connected to the latch mechanism 3 by a connecting portion 8a.

  The middle part of the inside lock lever 10 is rotatably supported on the lower case 2 by a shaft 16, and one end thereof is connected to one end of the lock lever 8 by the link lever 9. The other end of the inside lock lever 10 is connected to one end of a first cable 17, and the other end of the first cable 17 is connected to a lock knob (not shown) in the vehicle. Therefore, the lock knob in the vehicle is connected to the latch mechanism 3 via the first cable 17, the inside lock lever 10, the link lever 9 and the lock lever 8.

  The inside open lever 11 is rotatably supported at its middle portion by the shaft 18 on the lower case 2 and one end thereof is connected to the latch mechanism 3 via a connecting portion 11a. The other end of the inside open lever 11 is connected to one end of a second cable 19, and the other end of the second cable 19 is connected to an inside handle (not shown) in the vehicle. Accordingly, the inside handle in the vehicle is connected to the latch mechanism 3 via the second cable 19 and the inside open lever 11.

  By the way, the first bus bar 5 and the second bus bar 6 constitute a power feeding structure for the electric motor 4, and they are made of a highly conductive metal plate, as shown in detail in FIG. In the lower case, the cylindrical bosses 2a and 2b integrally erected on the lower case 2 are fitted into and engaged with the circular engagement locking holes 5a and 6a formed in the respective intermediate portions. Horizontally fixed to 2.

  Here, the first bus bar 5 and the second bus bar 6 respectively have main body portions 5A, 6A extending along the horizontal planar inner surface of the lower case 2, and the motor of the lower case 2 of each main body portion 5A, 6A. At one end extending to the holding portion 2A, plug convex portions 5B and 6B which are vertically erected by bending at right angles are respectively formed. Also, at the other end of each of the main body portions 5A and 6A of the first bus bar 5 and the second bus bar 6, connector convex portions 5C and 6C which are vertically erected by bending the same at a right angle are respectively formed. The heights of the connector convex portions 5C and 6C are set higher than the heights of the plug convex portions 5B and 6B, and the connector convex portions 5C and 6C face the inside of a rectangular cylindrical connector portion formed in the upper case (not shown). It functions as a connector terminal. Therefore, the first bus bar 5 and the second bus bar 6 are electrically connected to a power source (not shown) such as a battery via a harness (not shown) connected to a connector inserted into the connector convex portions 5C and 6C formed on them. It is done.

  Thus, in the present embodiment, as shown in FIG. 2, the locking pieces 5 b and 6 b are provided on one side portion of each of the plug convex portions 5 B and 6 B formed on the first bus bar 5 and the second bus bar 6. Each one is projected. Here, the details of the configuration of the plug convex portion 5B portion of one first bus bar 5 will be described based on FIGS. 4 and 5. FIG. In addition, since the structure of the plug convex part 6B part of the 2nd bus bar 6 is the same as that of the 1st bus bar 5, illustration and description about this are omitted.

  As shown in FIG. 4, at a boundary portion (boundary portion 5A1) with the plug convex portion 5B of the main body portion 5A of the first bus bar 5, a part of a support portion 2B described later formed in the main body portion 5A and the lower case 2 The notch 5c is formed to avoid interference with the Then, on one side of the plug convex portion 5B of the first bus bar 5, the locking piece 5b extends along the planar direction of the plug convex portion 5B and from the plug convex portion 5B to the boundary portion 5A1 of the main body 5A. Also in the width direction, it is extended and formed. Further, as shown in FIG. 5, a notch 5d is formed at the base end of the plug convex portion 5B of the first bus bar 5, and by forming the notch 5d, one end of the main portion 5A is compared The plug convex portion 5B can be easily formed by bending with a very small force. In addition, on both surfaces of the plug convex portion 5B, a concave portion 5e and a convex portion 5f are respectively formed along the shape of a later-described receptacle concave portion 4a (see FIG. 7) formed in the bottom of the electric motor 4.

  By the way, as shown in FIG. 3, in the motor holding portion 2A of the lower case 2, the thickness of the locking pieces 5b, 6b respectively provided on the plug convex portions 5B, 6B of the first bus bar 5 and the second bus bar 6 Support members 2B and 2C having a U-shape in a plan view are provided, which are positioned on both sides in the longitudinal direction and support the locking pieces 5b and 6b. Here, notched fitting grooves 2c and 2d for engaging the respective locking pieces 5b and 6b of the first bus bar 5 and the second bus bar 6 are formed in the respective support portions 2B and 2C, respectively. (See Figure 6).

  Further, as shown in FIG. 3, in the opening direction of the plane side of the fitting grooves 2c and 2d of the support portions 2B and 2C of the motor holding portion 2A of the lower case 2, the L-shaped main body holding portions 2D and 2E in plan view Are respectively provided, and as shown in FIG. 2, the respective plug convex portions 5B, 6B of the first bus bar 5 and the second bus bar 6 by the respective main body holding portions 2D, 2E and the respective supporting portions 2B, 2C opposed thereto. Is supported. Here, the details of the support structure for the lower case 2 of the plug convex portion 5B of the first bus bar 5 are shown in FIG. 6, but in the plug convex portion 5B, the locking piece 5b provided in a protruding manner is a support portion of the lower case 2 It is supported in the thickness direction by being fitted and locked in the fitting groove 2c formed in 2B, and is positioned and supported in the width direction by the support portion 2B and the main body holding portion 2D. In this case, since the notch 5c is formed at the boundary between the main body 5A of the first bus bar 5 and the plug convex 5B to avoid interference with the main body 5A and a part of the support 2B of the lower case 2, Part of the support portion 2B of the lower case 2 is disposed in the notch portion 5c, and a large engagement margin between the plug convex portion 5B and the support portion 2B can be obtained. It can be configured compactly in a small space.

  Although FIG. 6 shows the support structure of the plug convex portion 5B of the first bus bar 5 to the lower case 2, the support structure of the plug convex portion 6B of the second bus bar 6 to the lower case 2 is the same. Since it is the same as that, illustration and explanation about this are omitted.

  When the first bus bar 5 is assembled to the lower case 2, the circular engagement locking hole 5 a formed in the main body 5 A of the first bus bar 5 is integrally provided on the lower case 2. The plug convex portion 5B side of the first bus bar 5 is positioned with respect to the main body holding portion 2D of the lower case 2 by applying to the cylindrical boss 2a. Then, when the first bus bar 5 is pushed into the lower case 2, the boss 2 a is fitted into the fitting locking hole 5 a, and the locking piece 5 b provided on the plug convex portion 5 B serves as the support portion 2 B of the lower case 2. The first bus bar 5 is fixed to the lower case 2 by being inserted into the fitting groove 2 c.

  That is, the locking piece 5b provided in the plug convex portion 5B of the first bus bar 5 extends outward in the width direction more than the boundary portion 5A1 which is a boundary portion with the plug convex portion 5B of the main body portion 5A of the first bus bar 5 Since the lower case 2 is provided, the support portion 2B of the lower case 2 can be disposed lateral to the boundary 5A1 of the first bus bar 5. Therefore, at the time of assembly, the support portion 2B of the lower case 2 and the main body 5A of the first bus bar 5 do not interfere with each other, and only by assembling the first bus bar 5 to the lower case 2 It can be fitted into 2B. In addition, since the assembly | attachment procedure with respect to lower case 2 of the 2nd bus-bar 6 is the same as that of it of the 1st bus-bar 5, description about this is abbreviate | omitted. Further, each of the bus bars 5 is supported on the both sides in the thickness direction of the locking pieces 5b and 6b in which the U-shaped support portions 2B and 2C in plan view are respectively provided to support the locking pieces 5b and 6b. , 6 can be reliably prevented.

  By the way, the receptacle recess 4a is formed in two places (two places corresponding to each plug convex part 5B and 6B of the 1st bus bar 5 and the 2nd bus bar 6) of the bottom of electric motor 4, lower case of electric motor 4 When assembling the two motor holding portions 2A, the plug convex portions 5B and 6B of the first bus bar 5 and the second bus bar 6 are inserted into the two receptacle concave portions 4a formed on the bottom surface of the electric motor 4 and engaged. The electric motor 4 is electrically connected to the first bus bar 5 and the second bus bar 6 by combining them. Thus, when the electric motor 4 and the first bus bar 5 and the second bus bar 6 are electrically connected, the electric motor 4 is not shown via the first bus bar 5 and the second bus bar 6 and a harness (not shown). The electric power from the power supply is supplied to the electric motor 4 and the electric motor 4 is rotationally driven.

  Thus, in the present embodiment, the respective support portions 2B of the lower case 2 via the locking pieces 5b, 6b provided with the respective plug convex portions 5B, 6B of the first bus bar 5 and the second bus bar 6 projecting therefrom. , 2C, so that the direction of the plug convex portions 5B, 6B is corrected and the inclination thereof is suppressed. As a result, when assembling the electric motor 4, the plug convex portions 5B and 6B of the first bus bar 5 and the second bus bar 6 are respectively inserted into the receptacle concave portion 4a of the electric motor 4 smoothly and precisely. The effect that the assemblability of the electric motor 4 is enhanced can be obtained.

  And in this embodiment, since each plug convex part 5B, 6B of 1st bus-bar 5 and 2nd bus-bar 6 and each locking piece 5b, 6b were formed on the same plane, each plug convex part 5B, 6B is The first bus bar 5 and the second bus bar 6 provided with the locking pieces 5b and 6b can be easily manufactured by bending the main body portions 5A and 6A at a right angle, and the manufacturing cost is low. The effect of being able to suppress can be obtained.

  Further, in the present embodiment, the notch 5c for avoiding the interference with a part of the support 2B of the lower case 2 is formed in the boundary 5A1 of the first bus bar 5, so the lower case is formed in the notch 5c. As part of the second support 2B is disposed, the engagement margin between the plug convex portion 5B of the first bus bar 5 and the support 2B of the lower case 2 can be increased, and the feed structure can be reduced. It can be configured compactly.

  In the present embodiment, the locking pieces 5b and 6b of the first bus bar 5 and the second bus bar 6 are respectively provided on one side (the rear side of the electric motor 4) of the plug convex portions 5B and 6B. However, they may be provided on the other side (the front side of the electric motor 4) of each of the plug convex portions 5B, 6B, and the plug convex portions 5B, 6B may be received and supported on both sides. In this case, since the locking pieces provided on the other side of the plug convex portions 5B, 6B may interfere with the bottom surface of the electric motor 4, the electric motor 4 needs to be slightly floated. Therefore, if the locking pieces 5b and 6b are provided on one side of each of the plug convex portions 5B and 6B as in the present embodiment, interference between the locking pieces 5b and 6b with the electric motor 4 can be avoided. Since it can be formed avoiding and it is not necessary to make the electric motor 4 float, the whole door lock device 1 can be thinned.

  Next, the operation of the door lock device 1 according to the present embodiment will be described.

  When power is supplied to the electric motor 4 from a power supply (not shown) such as a battery through a harness and the first bus bar 5 and the second bus bar 6 from a power supply (not shown) such as a battery by a control signal output from a controller (not shown) The electric motor 4 is driven to rotate, and the rotation is transmitted to the worm wheel 7 via the worm 12 so that the worm wheel 7 rotates forward or reversely about the shaft 13. Then, the lock lever 8 is rotated about the shaft 14 to the lock position or the unlock position via the cam follower 15 engaged with the cam surface 7 a of the worm wheel 7. Then, when the lock lever 8 rotates to the lock position, the latch mechanism 3 is switched to the lock state, the closed state of the door (not shown) is locked, and when the lock lever 8 rotates to the unlock position, the latch mechanism 3 It is switched to the unlocked state, and opening and closing of a door (not shown) is permitted.

  Further, when a lock knob (not shown) in the vehicle is operated by the occupant, the first cable 17 moves forward and backward, and the inside lock lever 10 rotates about the shaft 16 to the lock position or the unlock position. Then, since the rotation of the inside lock lever 10 causes the lock lever 8 to rotate to the lock position or the unlock position via the linkage lever 9, the latch mechanism 3 is switched to the lock state or the unlock state, and the door is closed. Is locked or the door can be opened and closed.

  Furthermore, when the inside handle (not shown) in the vehicle is operated by the occupant, the second cable 19 pulls one end of the inside open lever 11, so that the inside open lever 11 rotates around the shaft 18 and the latch mechanism 3 In order to operate, when the latch mechanism 3 is in the unlocked state, the door can be opened.

  By the way, in the above embodiment, for example, when describing one of the first bus bars 5, the locking piece 5b is provided to project from the side portion of the plug convex portion 5B of the first bus bar 5. As shown, it is possible to configure a part of the plug convex portion 5B as the locking piece 5b by providing the notch 5c without making the locking piece 5b project from the side portion of the plug convex portion 5B. 8 is a view similar to FIG. 6 showing another form 1 of the present invention, and FIG. 9 is a view similar to FIG. 7 showing the same form 1 of the present invention.

  According to the above configuration, the plug convex portion 5B can be easily formed, and the feeding structure can be configured more compactly in a small space. Although illustration is omitted about the 2nd bus bar 6, it can constitute similarly about this.

  Further, in the above embodiment, for example, when describing one of the first bus bars 5, the notch 5c is formed in the boundary 5A1 of the main body 5A of the first bus bar 5 (see FIG. 4), And, as shown in FIG. 11, the main body 5 </ b> A of the first bus bar 5 may not be provided with a notch because it may protrude in the width direction more than the boundary 5 </ b> A 1. 10 is a view similar to FIG. 6 showing another form 2 of the present invention, and FIG. 11 is a view similar to FIG. 7 showing the same form 2.

  According to the above configuration, the molding of the first bus bar 5 can be facilitated, and the support portion 2B of the lower case 2 can be made smaller. Although illustration is omitted about the 2nd bus bar 6, it can constitute similarly about this.

  Although the present invention has been described as applied to a power feeding structure for an electric motor provided in a door lock device of a vehicle, the present invention is not limited to an electric motor provided in any device other than the door lock device. Of course, the present invention is similarly applicable to the power supply structure to the motor.

1 Door lock device 2 Lower case (base member)
2A lower case motor holding part 2B, 2C lower case support part 2D, 2E lower case main body holding part 2a, 2b lower case boss 2c, 2d support part fitting groove 3 latch mechanism 4 electric motor 4a electric motor receptacle recess 5 1 bus bar 5A first bus bar main body 5A1 first bus bar boundary 5B first bus bar plug convex 5C first bus bar connector convex 5a first bus bar engagement locking hole 5b first bus bar locking piece 5c Notch part of the first bus bar 5d Notch of the first bus bar 6 Second bus bar 6A Body part of the second bus bar 6B Plug convex part of the second bus bar 6C Connector convex part of the second bus bar 6a Fitting engagement of the second bus bar Stopper hole 6b Locking piece of the second bus bar 7 Worm wheel 7a Worm cam surface 8 Lock lever 8a Connecting portion 9 linkage lever Kkureba 10 inside lock lever 11 inside open lever 12 worm 13 shaft 15 the cam follower 16 shaft 17 first cable 18 shaft 19 second cable

Claims (5)

An electric motor and a bus bar are disposed on a base member, and power is supplied to the electric motor from a power supply via the bus bar,
The plug convex portion is formed by bending the plug convex portion at a right angle at one end of the main body portion extending along the inner surface of the base member of the bus bar, and the plug convex portion is inserted into a receptacle concave portion formed in the electric motor In a feed structure to an electric motor formed by electrically connecting a bus bar and the electric motor,
The plug convex portion of the bus bar is provided with a locking piece extending outward in the width direction than a boundary portion which is a boundary portion with the plug convex portion of the main body portion.
The base member has a fitting groove and is provided on both sides in the thickness direction of the locking piece to support the locking piece, and the locking piece is fitted in the fitting groove. A feed structure for an electric motor , comprising: locking the locking piece according to the invention.   The power supply structure for an electric motor according to claim 1, wherein a notch for avoiding interference with a part of the support portion is formed in the boundary portion of the main body portion.   The power supply structure to an electric motor according to claim 1 or 2, wherein the locking piece is formed to protrude from the plug convex portion along the planar direction of the plug convex portion.   The power supply structure to an electric motor according to claim 3, wherein a part of the plug convex portion extending outward in the width direction than a boundary portion of the main body portion of the bus bar is configured as the locking piece.   The electric power feeding structure to the electric motor according to any one of claims 1 to 4, wherein a notch is formed in a base end portion of the plug convex portion.

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