JP2015116110A - Electric wire holding member and manufacturing method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire holding member that can be easily subjected to die-cutting at molding time even with a shape in which an annular electric wire can be surely held, and a manufacturing method for the same.SOLUTION: A holding member 6, which holds first and second annular bus rings 31 and 32, comprises: first and second wall parts 61 and 62 curved along the first and second bus rings 31 and 32; and a first connection part 64 provided at a part of a region at which the first and second wall parts 61 and 62 oppose each other. In the first wall part 61 is formed a first protruding part 610a for locking the first bus ring 31, and in the second wall part 62 is formed a second protruding part 620 for locking the second bus ring 32. When viewed from a rotary shaft O direction, the first and second protruding parts 610a and 620 are provided in a region, of the region at which the first and second wall parts 61 and 62 oppose to each other, in which the first connection part 64 is not provided.

Description

  The present invention relates to an electric wire holding member that holds a plurality of electric wires formed in an annular shape and a manufacturing method thereof.

  Conventionally, a concentrated power distribution component including a holding member that holds a plurality of annular conductors is known (see, for example, Patent Document 1).

  The concentrated power distribution component described in Patent Literature 1 is used in a three-phase AC motor, and is arranged in parallel in the axial direction for a U-phase annular conductor, a V-phase annular conductor, a W-phase annular conductor, and An annular conductor for a neutral phase, a plurality of holding parts made of a resin that holds these annular conductors in parallel with each other, and a plurality of relay terminals having conductivity are provided.

  The plurality of holding components are arranged at equal intervals in the circumferential direction of the four annular conductors. The plurality of holding parts have a pair of wall portions facing each other with four annular conductors interposed therebetween, and a connecting portion connecting the pair of wall portions. The four annular conductors are accommodated in an accommodation groove constituted by a pair of wall portions and a coupling portion, and are fitted into a recess formed on the inner surface of the accommodation groove and held by a holding component. An attachment groove for attaching the relay terminal is formed on the side surface of the wall portion arranged radially inward of the pair of wall portions of the holding component.

JP 2007-318923 A

  In the holding component described in Patent Document 1, in order to hold the four annular conductors more reliably by elongating the pair of wall portions along the circumferential direction of the annular conductor, the pair of wall portions are formed of the four annular conductors. It is necessary to curve along the circumferential direction. However, when the pair of wall portions are curved along the circumferential direction of the four annular conductors, there is a risk that the mold configuration for molding the holding component becomes complicated and it becomes difficult to perform die cutting. is there.

  Accordingly, an object of the present invention is to provide an electric wire holding member and a method for manufacturing the electric wire holding member that can be easily punched at the time of molding while having a shape capable of reliably holding an annular electric wire. And

  In order to solve the above-described problems, the present invention provides an electric wire holding member made of a resin that holds annular first and second electric wires arranged in parallel along the rotation axis direction of the rotor of the electric motor. The first and second electric wires are curved along the circumferential direction of the first and second electric wires, and are arranged to face each other so as to sandwich the first and second electric wires in a direction perpendicular to the rotation axis. Two wall portions, and a first connecting portion that is provided in a part of the circumferential direction in a region where the first and second wall portions face each other and connects the first and second wall portions. The first wall portion is formed with a first convex portion for preventing the first electric wire disposed on one end surface side in the rotation axis direction of the first connecting portion, The second wall portion is disposed on the other end surface side in the rotation axis direction of the first connecting portion. A second convex portion that prevents the electric wire from coming off is formed, and when viewed from the direction of the rotation axis, the first and second convex portions are located in a region where the first and second wall portions face each other. Among these, the electric wire holding member provided in the area | region where the said 1st connection part is not provided is provided.

  Further, the present invention is a manufacturing method for manufacturing the electric wire holding member by molding for the purpose of solving the above-mentioned problems, and the concave portions for molding the first and second convex portions, respectively, Provided is a method of manufacturing an electric wire holding member configured by combining notches formed in first and second molds that move relatively in the rotational axis direction.

  According to the electric wire holding member and the manufacturing method thereof according to the present invention, it is possible to easily perform die-cutting at the time of molding while having a shape capable of reliably holding the annular electric wire.

It is a perspective view which shows one structural example of the electric motor in embodiment of this invention. It is a perspective view which shows one structural example of a power collection and distribution ring. It is the sectional view on the AA line of FIG. The holding member which concerns on embodiment of this invention is shown, (a) is the perspective view seen from one side, (b) is the perspective view seen from the other side. 6A is a top view of the holding member, FIG. 5B is a left side view, FIG. 5C is a front view, FIG. 6D is a right side view, FIG. 5E is a rear view, and FIG. It is a bottom view. It is a top view of a metal mold | die. The state before combining the upper metal mold | die and the lower metal mold | die in the BB line cross section of FIG. 6 is shown, (a) is the perspective view seen from one side, (b) is the perspective view seen from the other side. . The state which combined the upper side metal mold | die and the lower side metal mold | die in the BB cross section of FIG. 6 is shown, (a) is a perspective view, (b) is the partially expanded view of (a). FIG. 7 is a cross-sectional view taken along the line CC of FIG. 6 in the manufacturing process of the holding member according to the embodiment of the present invention, where (a) is a state before the upper mold and the lower mold are combined, and (b) is the upper mold. A state in which the mold and the lower mold are combined, (c) shows a state in which the molten resin is filled in the mold, and (d) shows a state in which the upper mold is removed from the lower mold. FIG. 7 is a cross-sectional view taken along line B-B in FIG. 6 in a state where a molten resin is filled in a mold, where (a) is a perspective view seen from one side, and (b) is a perspective view seen from the other side.

[Embodiment]
The three-phase AC motor in the embodiment of the present invention is used as, for example, a driving source for traveling of a vehicle and is supported by a vehicle body.

(Configuration of electric motor 1)
First, the configuration of the electric motor 1 will be described with reference to FIG.

  FIG. 1 is a perspective view showing a configuration example of an electric motor 1 according to an embodiment of the present invention. In FIG. 1, the rotation axis O of the rotor 22 and the output shaft 23 is indicated by a one-dot chain line.

  The electric motor 1 includes a cylindrical stator 21, a rotor 22 that is arranged on the inner side in the radial direction of the stator 21, and that rotates with respect to the stator 21. An output shaft 23 that is rotatably supported integrally with the rotor 22, and a power collection and distribution ring 11 that is disposed in parallel with the stator 21 in the direction of the rotation axis O of the rotor 22. The stator 21, the rotor 22, and the output shaft 23 are arranged in the order of the output shaft 23, the rotor 22, and the stator 21 from the inner side toward the outer side in a concentric shape with the rotation axis O as the center.

  The power collection and distribution ring 11 is connected to the annular first to fourth bus rings 31 to 34 and the first to third bus rings 31 to 33 arranged in parallel along the direction of the rotation axis O. At the same time, first to third power supply terminals 41 to 43 connected to the terminal block 20 provided outside the first to fourth bus rings 31 to 34 in the direction orthogonal to the rotation axis O by bolts 20a. , Each phase winding 210 (the U-phase winding 211, the V-phase winding 212, and the W-phase winding 213) and the first to fourth bus rings 31 to 34, respectively. A plurality of first to fourth connection terminals 51 to 54 to be connected and a plurality (six in this embodiment) of holding members 6 made of a resin for holding the first to fourth bus rings 31 to 34. I have.

  The U-phase winding 211, the V-phase winding 212, and the W-phase winding 213 are drawn out so that their ends are positioned outside the power collection and distribution ring 11 in the direction orthogonal to the rotation axis O. It is.

  Here, the 1st-4th bus rings 31-34 are the one aspect | mode of the 1st-4th electric wire in this invention, and the holding member 6 is an aspect of the electric wire holding member in this invention.

  A wire harness (not shown) having one end connected to the inverter is connected to the terminal block 20, and the other end of the wire harness and the first to third power supply terminals 41 to 43 are connected via the terminal block 20. Electrically connected. The current output from the inverter is supplied to the electric motor 1 via the wire harness and the first to third power supply terminals 41 to 43. The terminal block 20 is fixed to a fixing portion of a vehicle body (not shown). In the present embodiment, the first to fourth bus rings 31 to 34 are arranged closer to the stator 21 than the terminal block 20 in the direction of the rotation axis O.

  A plurality (four in the present embodiment) of the first connection terminals 51 are provided on the first bus ring 31, and a plurality (four in the present embodiment) of the second connection terminals 52 are provided on the second bus ring 32. In addition, a plurality (four in the present embodiment) of third connection terminals 53 are provided on the third bus ring 33, and a plurality (12 in the present embodiment) of fourth connection terminals 54 are provided on the fourth bus. Each ring 34 is provided.

  Further, one end of the U-phase winding 211 is connected to the plurality of first connection terminals 51, and one end of the V-phase winding 212 is connected to the plurality of second connection terminals 52. One end of a W-phase winding 213 is connected to the terminal 53 by, for example, fusing.

  On the other hand, the other end portions of the U-phase winding 211, the V-phase winding 212, and the W-phase winding 213 are connected to the plurality of fourth connection terminals 54, respectively. As a result, the circuit of the current flowing through the U-phase winding 211, the V-phase winding 212, and the W-phase winding 213 is closed by the fourth bus ring 34 (closed circuit). That is, the fourth bus ring 34 is a neutral bus ring for forming a closed circuit in the U-phase winding 211, the V-phase winding 212, and the W-phase winding 213. Accordingly, the fourth connection terminal 54 is a connection terminal for a neutral phase.

(Configuration of power collection and distribution ring 11)
Next, the configuration of the power collection and distribution ring 11 will be described with reference to FIGS.

  FIG. 2 is a perspective view illustrating a configuration example of the power collection and distribution ring 11. FIG. 3 is a cross-sectional view taken along line AA in FIG.

  The first to third bus rings 31 to 33 are formed by bending an insulated wire having center conductors 310a, 320a, and 330a and insulators 310b, 320b, and 330b covering the center conductors 310a, 320a, and 330a, respectively. The annular portions 311, 321, 331 formed in an annular shape around the rotation axis O, and the connection portions that connect the annular portions 311, 321, 331 and the first to third power supply terminals 41-43. 312, 322, 332.

  The fourth bus ring 34 is formed by bending an insulated wire having a center conductor 340a and an insulator 340b, and rotates without having a connection portion for connection to the first to third power supply terminals 41 to 43. It is formed in an annular shape centering on the axis O.

  As described above, the fourth bus ring 34 is a neutral phase bus ring for forming a closed circuit in the U-phase winding 211, the V-phase winding 212, and the W-phase winding 213. Unlike the configuration of the first to third bus rings 31 to 33, the power feeding terminal is not connected to the end. Therefore, the fourth bus ring 34 is configured only by the annular portion 341.

  Here, the “annular” refers to a shape that extends so as to make one round along the circumferential direction of the stator 21. For example, when the portion constituting the bus ring includes a portion protruding in the radial direction, that is, the bus ring is formed in a polygonal shape, or one bus ring is combined with a plurality of arc-shaped conductive members Even if it is configured, it is included in the “annular shape” as long as the entire bus ring extends so as to make one round along the circumferential direction of the stator 21.

  In the first to fourth bus rings 31 to 34, the first bus ring 31 and the fourth bus ring 34 are arranged in the direction of the rotation axis O, and the second bus ring 32 and the third bus ring 34 are arranged. The bus ring 33 is arranged side by side in the direction of the rotation axis O. In addition, the first bus ring 31 and the second bus ring 32 are arranged side by side in a direction orthogonal to the rotation axis O, and the third bus ring 33 and the fourth bus ring 34 are connected to the rotation axis O. Are arranged side by side in a direction orthogonal to the.

  In the present embodiment, the fourth bus ring 34 is disposed between the first bus ring 31 and the stator 21 (see FIG. 4) in the direction of the rotation axis O, and the third bus ring 33 is rotated. Arranged between the second bus ring 32 and the stator 21 in the direction of the axis O. That is, the third bus ring 33 and the fourth bus ring 34 are arranged closer to the stator 21 than the first bus ring 31 and the second bus ring 32 in the direction of the rotation axis O. The first bus ring 31 and the fourth bus ring 34 are arranged closer to the rotation axis O than the second bus ring 32 and the third bus ring 33.

  Further, the first to fourth bus rings 31 to 34 are arranged apart from each other by a predetermined distance so as not to interfere with each other due to, for example, vehicle vibration.

  A plurality of first connection terminals 51 are provided in the annular portion 311 of the first bus ring 31, and a plurality of second connection terminals 52 are provided in the annular portion 321 of the second bus ring 32. A plurality of third connection terminals 53 are arranged on the annular portion 331 of the ring 33, and a plurality of fourth connection terminals 54 are arranged on the annular portion 341 of the fourth bus ring 34 at equal intervals in the circumferential direction. Connected with.

  In the present embodiment, the first connection terminal 51 and the second connection terminal 52 have the same shape, and the third connection terminal 53 and the fourth connection terminal 54 have the same shape. ing.

  The 1st-3rd electric power feeding terminals 41-43 are the connection of the flat connection pieces 411,421,431 connected to the terminal block 20 (refer FIG. 1), and the 1st-3rd bus rings 31-33. The parts 312, 322, and 332 integrally include caulking parts 412, 422, and 432 that caulk the central conductors 310 a, 320 a, and 330 a exposed from the insulators 310 b, 320 b, and 330 b.

  The connection pieces 411, 421, 431 are formed by bending a part of the end portions of the crimping portions 412, 422, 432 so as to project outward in the radial direction of the first to fourth bus rings 31-34. Has been. The connection pieces 411, 421, 431 have through holes 411a, 421a, 431a for inserting bolts 20a (see FIG. 1) for connecting the first to third power supply terminals 41-43 and the terminal block 20. Is penetrating along a direction parallel to the rotation axis O.

(Configuration of holding member 6)
Next, the configuration of the holding member 6 will be described with reference to FIGS. 4 and 5.

  4A and 4B show the holding member 6 according to the embodiment of the present invention. FIG. 4A is a perspective view seen from one side, and FIG. 4B is a perspective view seen from the other side. FIG. 5 is a six-sided view of the holding member 6, FIG. 5 (a) is a top view, FIG. 5 (b) is a left side view, FIG. 5 (c) is a front view, and FIG. FIG. 5 (e) is a rear view, and FIG. 5 (f) is a bottom view.

  The holding member 6 is made of an insulating resin, and includes a first wall portion 61 and a first wall portion 61 that are arranged to face each other so as to sandwich the first bus ring 31 and the second bus ring 32 in a direction orthogonal to the rotation axis O. Between the second wall portion 62 and the wall surface 61b of the first wall portion 61 on the side opposite to the second wall portion 62, the third bus ring 33 and the fourth bus ring 34 are connected to the rotation axis O. 3rd wall part 63 arrange | positioned facing the 1st wall part 61 so that it may pinch | intersect to the direction orthogonal to 1st, and the 1st-1st in the area | region where the 1st wall part 61 and the 2nd wall part 62 oppose. A first connecting portion 64 provided in a part of the circumferential direction of the fourth bus rings 31 to 34 and connecting the first wall portion 61 and the second wall portion 62 in a direction perpendicular to the rotation axis O; The circumference of the 1st-4th bus rings 31-34 in the field where the 1st wall part 61 and the 3rd wall part 63 oppose Provided in a part of, and a second connecting portion 65 for coupling in a direction perpendicular to the first wall portion 61 and the third wall portion 63 in the rotational axis O together.

  As shown in FIGS. 4 (a), 4 (b), 5 (a), and 5 (f), the first to third wall portions 61 to 63 are respectively connected to the first to fourth buses. It curves in a gentle arc shape along the circumferential direction of the rings 31-34. In the present embodiment, the first to third wall portions 61 to 63 are arranged such that the third wall portion 63, the first wall portion 61 to the first wall portion 63 to the first wall ring 31 to 34, from the radially inner side to the outer side. The wall portion 61 and the second wall portion 62 are arranged in parallel in this order.

  As shown in FIGS. 5B and 5D, the first wall portion 61 is formed so that the height in the direction of the rotation axis O is higher than the second wall portion 62 and the third wall portion 63. Has been. More specifically, the first wall portion 61 protrudes closer to the stator 21 than the second wall portion 62 and the third wall portion 63 in the direction of the rotation axis O, and the second wall portion 62. And it protrudes in the opposite side to the stator 21 rather than the 3rd wall part 63. FIG.

  As shown in FIGS. 4A and 5E, one end surface of the first connecting portion 64 in the direction of the rotation axis O is formed on the wall surface 61a of the first wall portion 61 on the second wall portion 62 side. A first convex portion 610a for preventing the first bus ring 31 disposed on the 64a side from coming off is formed, and the wall surface 62a on the first wall portion 61 side in the second wall portion 62 has a structure shown in FIG. As shown in FIG. 5B and FIG. 5E, the second convex portion 620 that prevents the second bus ring 32 disposed on the other end face 64b side in the rotation axis O direction of the first connecting portion 64 from being detached. Is formed.

  As shown in FIGS. 5A and 5F, when the holding member 6 is viewed from the direction of the rotation axis O, the first convex portion 610a and the second convex portion 620 are the first wall portion. Of the regions where the 61 and the second wall 62 are opposed to each other, the first connecting portion 64 is not provided.

  Moreover, as shown in FIG.5 (e), when the holding member 6 is seen from the circumferential direction of the 1st-4th bus rings 31-34, the 1st convex part 610a is fixed in the rotation axis O direction. On the side opposite to the child 21, the second convex portions 620 are respectively arranged on the stator 21 side in the rotation axis O direction.

  As shown in FIG. 4B and FIG. 5C, one end surface of the second connecting portion 65 in the direction of the rotation axis O is formed on the wall surface 61b of the first wall portion 61 on the third wall portion 63 side. A third convex portion 610b for preventing the third bus ring 33 from coming off is formed on the 65a side, and the wall surface 63a on the first wall portion 61 side of the third wall portion 63 has a structure shown in FIG. As shown in FIG. 5C, a fourth convex portion 630 that prevents the fourth bus ring 34 from coming off is formed on the other end surface 65 b side in the rotation axis O direction of the second connecting portion 65.

  As shown in FIGS. 5A and 5F, when the holding member 6 is viewed from the direction of the rotation axis O, the third convex portion 610b and the fourth convex portion 630 are the first wall portion. Of the regions where 61 and the third wall 63 are opposed to each other, the second connecting portion 65 is not provided.

  Moreover, as shown in FIG.5 (c), when the holding member 6 is seen from the circumferential direction of the 1st-4th bus rings 31-34, the 3rd convex part 610b is fixed in the rotation axis O direction. On the side opposite to the child 21, the fourth protrusions 630 are respectively arranged on the stator 21 side in the rotation axis O direction.

  In the present embodiment, as shown in FIG. 5A and FIG. 5F, when the holding member 6 is viewed from the direction of the rotation axis O, the first connecting portion 64 is in the first wall portion 61. Provided on one side in the circumferential direction of the first to fourth bus rings 31 to 34, and the second connecting portion 65 is provided on the other side in the circumferential direction of the first to fourth bus rings 31 to 34. . In addition, when it sees from the radial direction of the 1st-4th bus rings 31-34, the 1st connection part 64 and the 2nd connection part 65 may overlap in part.

  In the region where the first and second wall portions 61 and 62 face each other, the first connecting portion 64 is arranged on one side in the circumferential direction of the first to fourth bus rings 31 to 34, and the first convex portion 610a and the 2nd convex part 620 are arrange | positioned at the other side of the circumferential direction of the 1st-4th bus rings 31-34. In the region where the first and third wall portions 61 and 63 face each other, the second connecting portion 65 is disposed on one side in the circumferential direction of the first to fourth bus rings 31 to 34, and the third convex portion 610b and the 4th convex part 630 are arrange | positioned at the other side of the circumferential direction of the 1st-4th bus rings 31-34.

  The 1st convex part 610a is the 1st-4th bus rings 31- 1 toward the 1st connection part 64 side from the edge part on the opposite side to the 1st connection part 64 in the 1st wall part 61. As shown in FIG. It extends along the circumferential direction of 34. Similarly, the 2nd convex part 620 is 1st-4th from the edge part on the opposite side to the 1st connection part 64 in the 2nd wall part 62 toward the 1st connection part 64 side. It is formed extending along the circumferential direction of the bus rings 31 to 34.

  The 3rd convex part 610b is the 1st-4th bus rings 31- 1 toward the 2nd connection part 65 side from the edge part on the opposite side to the 2nd connection part 65 in the 1st wall part 61. As shown in FIG. It extends along the circumferential direction of 34. Similarly, the 4th convex part 630 is the 1st-4th from the edge part on the opposite side to the 2nd connection part 65 in the 3rd wall part 63 toward the 2nd connection part 65 side. It is formed extending along the circumferential direction of the bus rings 31 to 34.

  The first connecting portion 64 is recessed in an arc shape so that both end faces 64 a and 64 b in the direction of the rotation axis O are along the outer peripheral surfaces of the first bus ring 31 and the second bus ring 32. More specifically, in the first connecting portion 64, the end surface 64a on the stator 21 side in the rotation axis O direction is recessed in an arc shape toward the side opposite to the stator 21, and the stator in the rotation axis O direction. An end face 64b on the opposite side to 21 is recessed in an arc shape toward the stator 21 side.

  Similar to the first connecting portion 64, the second connecting portion 65 has both end faces 65 a and 65 b in the direction of the rotation axis O along the outer peripheral surfaces of the third bus ring 33 and the fourth bus ring 34. It is recessed in an arc shape.

  The first wall portion 61, the second wall portion 62, and the first connecting portion 64 constitute a holding groove for holding the first bus ring 31 and the second bus ring 32, and The wall portion 61, the third wall portion 63, and the second connecting portion 65 constitute a holding groove for holding the third bus ring 33 and the fourth bus ring 34.

(Configuration of mold 7)
Next, the configuration of the mold 7 (the upper mold 71 and the lower mold 72) for molding the holding member 6 will be described with reference to FIGS.

  FIG. 6 is a top view of the mold 7. 7 shows a state before the upper mold 71 and the lower mold 72 are combined in the cross section taken along the line BB of FIG. 6, FIG. 7 (a) is a perspective view seen from one side, and FIG. 7 (b). FIG. 3 is a perspective view seen from the other side. FIG. 8 shows a state in which the upper mold 71 and the lower mold 72 are combined in the cross section taken along the line B-B in FIG. 6, FIG. 8 (a) is a perspective view, and FIG. 8 (b) is FIG. FIG.

  The holding member 6 is molded by using a mold 7 including an upper mold 71 as a first mold and a lower mold 72 as a second mold that move relatively in the direction of the rotation axis O. Manufactured by.

  As shown in FIGS. 7A and 7B, the upper mold 71 includes a main body 710 and first to fourth protrusions that protrude from the main body 710 toward the lower mold 72. 711 to 714 and abutting portions with which a second protrusion 722 and a fourth protrusion 724 of the lower mold 72 described later abut each other (FIGS. 7 and 8 show only one abutting portion 715). And have.

  The first protrusion 711 is parallel to the second protrusion 712 and a direction parallel to the line BB in FIG. 6, and is parallel to the fourth protrusion 714 and a direction perpendicular to the line BB of FIG. doing. As described above, the second protrusion 712 is parallel to the first protrusion 711 and the direction parallel to the line BB in FIG. 6, and is perpendicular to the third protrusion 713 and the line BB in FIG. Parallel to the direction.

  And the 3rd projection part 713 is juxtaposed in the direction parallel to the 4th projection part 714 and the BB line of FIG. 6, and the 2nd projection part 712 and the BB line of FIG. Parallel in the vertical direction. As described above, the fourth protrusion 714 is parallel to the third protrusion 713 and the direction parallel to the line BB in FIG. 6, and is perpendicular to the first protrusion 711 and the line BB in FIG. In parallel.

  The first projecting portion 711 and the third projecting portion 713 each have a surface facing the lower mold 72 formed in an arc shape. The second projecting portion 712 and the fourth projecting portion 714 are each formed in a substantially rectangular parallelepiped shape elongated in the axial direction of the first to fourth bus rings 31 to 34, and are one corner on the lower mold 72 side. Notches 712a and 714a are formed in the.

  In the relative movement direction (direction of the rotation axis O) of the upper mold 71 and the lower mold 72, the second protrusion 712 and the fourth protrusion 714 are the first protrusion 711 and the third protrusion 713. It protrudes to the lower mold 72 side.

  The abutting part 715 is arranged in parallel with the first projecting part 711 and the second projecting part 712 in a direction parallel to the line BB in FIG. 6, and the first projecting part 711 and the second projecting part 712 It is provided between. A notch 715a is formed at a corner of the abutting portion 715 on the first protrusion 711 side. The other butting portion has the same configuration, and is arranged in parallel with the third and fourth projecting portions 713 and 714 in a direction parallel to the line BB in FIG. 6 and the third projecting portion 713. And the fourth protrusion 714.

  As shown in FIGS. 7 (a) and 7 (b), the lower mold 72 has a main body portion 720 having a space 72a in a part thereof, and the main body portion 720 in the space 72a from the main body portion 720 toward the upper mold 71 side. The first to fourth projecting portions 721 to 724 projecting from each other and the second projecting portion 712 and the fourth projecting portion 714 of the upper mold 71 abut against each other (in FIGS. Only the butting portion 725 is shown).

  The configurations of the first to fourth protrusions 721 to 724 and the butting portion of the lower mold 72 are the same as the configurations of the first to fourth protrusions 711 to 714 and the butting portion of the upper mold 71, respectively. It is. The second protrusion 722, the fourth protrusion 724, and the abutting part 725 have notches 722a, 724a, and 725a formed at respective corners.

  Further, the positional relationship between the first to fourth projecting portions 721 to 724 of the lower mold 72 is the same as the positional relationship between the first to fourth projecting portions 711 to 714 of the upper mold 71. The positional relationship of

  Unlike the abutting portion 715 in the upper mold 71, the abutting portion 725 is opposite to the first projecting portion 721 across the second projecting portion 722 in the direction parallel to the line BB in FIG. Is provided. The other abutting portion also differs from the other abutting portion in the upper mold 71 with the third projecting portion 723 across the fourth projecting portion 724 in the direction parallel to the line BB in FIG. Is provided on the opposite side.

  When the upper mold 71 and the lower mold 72 are combined, the first protrusion 711 of the upper mold 71 and the first protrusion 721 of the lower mold 72 are combined with the third protrusion 71 of the upper mold 71. The protrusion 713 and the third protrusion 723 of the lower mold 72 are opposed to each other. In addition, the second protrusion 712 and the fourth protrusion 714 of the upper mold 71 abut against the abutting part of the lower mold 72, respectively, and the second protrusion 722 and the fourth protrusion of the lower mold 72. Projecting portions 724 abut against the abutting portion of the upper mold 71.

  In FIG. 8A, the first protrusion 711 of the upper mold 71 and the first protrusion 721 of the lower mold 72 are opposed to each other, and the second protrusion 712 of the upper mold 71 is lower. A state in which the abutting portion 725 of the side mold 72 and the second projecting portion 722 of the lower mold 72 abut against the abutting portion 715 of the upper mold 71 is shown.

  At this time, as shown in FIG. 8B, a notch 715a formed in the abutting portion 715 of the upper mold 71 and a notch 722a formed in the second protrusion 722 of the lower mold 72, Are combined to form a recess 700a. The recess 700a is formed to extend toward the third protrusion 713 and the fourth protrusion 714 of the upper mold 71 (direction perpendicular to the line BB in FIG. 6). Similarly, the notch 712a formed in the second protrusion 712 of the upper mold 71 and the notch 725a formed in the abutting part 725 of the lower mold 72 are combined to form the recess 700b. Composed.

  The notch 714a formed in the fourth protrusion 714 of the upper die 71 has a recess formed by a combination with the notch formed in the abutting portion of the corresponding lower die 72, and the lower die The notches 724 a formed in the fourth protrusions 724 of 72 form a recess by a combination with the notches formed in the abutting portions of the corresponding upper mold 71.

  Therefore, the first protrusion 610a and the second protrusion 610a are formed by the four recesses formed by the combination of the four notches formed in the upper mold 71 and the four notches formed in the lower mold 72. A convex portion 620, a third convex portion 610b, and a fourth convex portion 630 are formed (see FIGS. 4 and 5).

(Manufacturing method of holding member 6)
Next, the manufacturing method of the holding member 6 is demonstrated with reference to FIG.9 and FIG.10.

  9 is a cross-sectional view taken along the line CC of FIG. 6 in the manufacturing process of the holding member 6 according to the embodiment of the present invention. FIG. 9A is a view before the upper mold 71 and the lower mold 72 are combined. FIG. 9B shows a state where the upper die 71 and the lower die 72 are combined, FIG. 9C shows a state where the molten resin 60 is filled in the die 7, and FIG. A state where the upper mold 71 is removed from the lower mold 72 is shown. 10 shows a cross section taken along line BB in FIG. 6 in a state where the molten resin 60 is filled in the mold 7, FIG. 10 (a) is a perspective view seen from one side, and FIG. It is the perspective view seen from the side.

  As shown in FIGS. 9A and 9B, the upper mold 71 and the lower mold 72 move relative to each other in the direction of the rotation axis O, whereby the first to fourth of the upper mold 71. The protrusions 711 to 714 are accommodated in the space 72 a of the lower mold 72. Thereby, the upper mold 71 and the lower mold 72 are combined to form a space 70a.

  As shown in FIGS. 9C, 10 </ b> A, and 10 </ b> B, a molten resin 60 is filled into a space 70 a formed by a combination of the upper mold 71 and the lower mold 72. The molten resin 60 is about 330 ° C., for example. At this time, the molten resin 60 is also filled in the four recesses formed by the combination of the four notches formed in the upper mold 71 and the four notches formed in the lower mold 72.

  As shown in FIG. 9D, after the molten resin 60 is cooled and solidified, the upper mold 71 and the lower mold 72 are relatively moved in the direction of the rotation axis O, and the upper mold 71 is moved to the lower mold. Extract from 72. Thereby, the holding member 6 (refer FIG. 4) by which the 1st-4th convex part 610a, 620, 610b, 630 was formed in each of the 1st-3rd wall parts 61-63 is formed by molding. The

(Operation and effect of the embodiment)
According to the embodiment described above, the following operations and effects can be obtained.

(1) Since the holding member 6 is formed so that the first to third wall portions 61 to 63 are curved along the circumferential direction of the annular first to fourth bus rings 31 to 34, -It is possible to hold | maintain the 4th bus rings 31-34 reliably. Further, when the holding member 6 is viewed from the direction of the rotation axis O, the first and second convex portions 610a and 620 are the first of the regions where the first wall portion 61 and the second wall portion 62 face each other. 1 where the first connecting portion 64 is not provided, and the second and fourth convex portions 610b and 630 are the second of the regions where the first wall portion 61 and the third wall portion 63 face each other. Therefore, the holding member 6 can be formed by the upper and lower molds (the upper mold 71 and the lower mold 72) that move relatively in the direction of the rotational axis O. is there. Therefore, the holding member 6 can be formed by the upper and lower molds that can be easily removed while being able to reliably hold the first to fourth bus rings 31 to 34.

(2) Since the first to fourth convex portions 610a, 620, 610b, and 630 extend along the circumferential direction of the first to fourth bus rings 31 to 34, respectively, the first to fourth buses. When the rings 31 to 34 try to escape from the holding member 6, the first to fourth convex portions 610 a, 620, 610 b and 630 and the outer peripheral surfaces of the first to fourth bus rings 31 to 34 are lines. By contacting, it is possible to suppress the first to third bus rings 31 to 34 from coming out of the holding member 6.

(3) The first connecting portion 64 is circular so that both end faces in the rotation axis O direction (one end face and the other end face in the rotation axis O direction) are along the outer peripheral surfaces of the first and second bus rings 31 and 32. Since it is depressed in an arc shape, the first connecting portion 64 and the first and second bus rings 31 and 32 are in surface contact. Thereby, rattling in the holding member 6 of the first and second bus rings 31 and 32 is suppressed. For example, when the vehicle vibrates, the first connecting portion 64 is connected to the first and second bus rings. Breaking of the insulators 310b and 320b caused by interfering with 31 and 32 can be suppressed. Further, since both end surfaces of the first connecting portion 64 in the direction of the rotation axis O are arcuate, the inclination of the first wall portion 61 and the second wall portion 62 with respect to the first connecting portion 64 is suppressed and held. The rigidity of the member 6 is increased. As a result, even if there is one protrusion for preventing the removal of one bus ring, the bus ring is securely held without being pulled out of the holding member 6.

(4) Similarly to (3), the second connecting portion 65 has both end faces in the rotation axis O direction (one end face and the other end face in the rotation axis O direction) of the third and fourth bus rings 33, 34. Since it is depressed in an arc shape along the outer peripheral surface, rattling of the third and fourth bus rings 33 and 34 in the holding member 6 is suppressed, and the insulators 330b and 340b generated by vibration or the like are torn. Can be suppressed. In addition, the inclination of the first wall portion 61 and the third wall portion 63 with respect to the second connecting portion 65 is suppressed, and the rigidity of the holding member 6 is increased, so that the convex portion for retaining the one bus ring is prevented. Even if there is only one, the bus ring is securely held without being pulled out of the holding member 6.

(5) The first connecting portion 64 is provided in a part of the circumferential direction of the first and second bus rings 31 and 32 in the region where the first wall portion 61 and the second wall portion 62 face each other. The second connecting portion 65 is provided in a part of the circumferential direction of the third and fourth bus rings 33 and 34 in a region where the first wall portion 61 and the third wall portion 63 are opposed to each other. Therefore, the first to third wall portions 61 to 63 are easily bent, and the first to fourth bus rings 31 to 31 are inserted when the first to fourth bus rings 31 to 34 are inserted into the holding member 6. 34 and the first to fourth convex portions 610a, 620, 610b, and 630 can be suppressed, and the insulators 310b, 320b, 330b, and 34b can be prevented from being broken.

(6) When viewed from the direction of the rotation axis O, the first connecting portion 64 is arranged on one side in the circumferential direction of the first to fourth bus rings 31 to 34, and the second connecting portion 65 is the first. -It arrange | positions at the other side of the circumferential direction of the 4th bus rings 31-34. That is, the portion that holds the first and second bus rings 31 and 32 and the portion that holds the third and fourth bus rings 33 and 34 are different in the circumferential direction of the first to fourth bus rings. Thereby, the part which hold | maintains the 1st and 2nd bus rings 31 and 32 and the part which hold | maintains the 3rd and 4th bus rings 33 and 34 are the same in the circumferential direction of a 1st-4th bus ring. Compared to the case of the position, the first to fourth bus rings 31 to 34 can be stably held.

(7) Upper mold 71 in which concave portions for forming first to fourth convex portions 610a, 620, 610b, and 630 (recess portions 700a and 700b are shown in FIG. 12) relatively move in the direction of rotation axis O. And notches formed in the lower mold 72 (notches 712a, 714a, 715a, 722a, 724a, and 725a are shown in FIG. 11). For example, the upper mold 71 and the lower mold Compared to the case where the concave portion is formed in one of the molds 72, the concave portion can be configured with a simple mold structure without applying a complicated mold structure.

(Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, the reference numerals and the like in the following description are not intended to limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.

[1] Annular first and second electric wires (first and second bus rings 31, 32) arranged in parallel along the rotation axis O direction of the rotor (22) of the electric motor (1). An electric wire holding member (6) made of a resin to be held, curved along the circumferential direction of the first and second bus rings (31, 32), and the first and second bus rings (31, 32). Is a region where the first and second wall portions (61, 62) and the first and second wall portions (61, 62) that are disposed so as to face each other in a direction perpendicular to the rotation axis O are opposed to each other. And a first connecting part (64) for connecting the first and second wall parts (61, 62) to the first wall part (61). 1st convexity which prevents the 1st bus ring (31) arranged at the one end face side in the direction of rotation axis O of 1 connecting part (64) (610a) is formed, and the second wall portion (62) has a second bus ring (32) that is disposed on the other end surface side in the direction of the rotation axis O of the first connecting portion (64). Second projections (620) are formed, and when viewed from the direction of the rotation axis O, the first and second projections (610a, 620) are the first and second wall portions (61, 62) The electric wire holding member (6) provided in the area | region where the 1st connection part (64) is not provided among the area | regions where 62) opposes.

[2] The electric wire holding member (6) according to [1], wherein the first and second convex portions (610a, 620) extend along the circumferential direction.

[3] The first connecting portion (64) is recessed in an arc shape so that one end surface (64a) and the other end surface (64b) are along the outer peripheral surfaces of the first and second bus rings (31, 32). The wire holding member (6) according to [1] or [2].

[4] A manufacturing method for manufacturing the wire holding member (6) according to any one of [1] to [3] by molding, wherein the first and second protrusions (610a, 620) are formed. Each of the concave portions for molding is configured by combining notches formed respectively in the first and second molds (the upper mold 71 and the lower mold 72) that move relatively in the direction of the rotation axis O. Manufacturing method of holding member (6).

[5] Each of the first and second bus rings (31, 32) between the first wall portion (61) and the wall surface (61b) opposite to the second wall portion (62). On the other hand, facing the first wall portion (61) so as to sandwich the annular third and fourth electric wires (third and fourth bus rings 33, 34) arranged in parallel in the direction orthogonal to the rotation axis O. The third wall portion (63) arranged and curved along the circumferential direction of the third and fourth bus rings (33, 34) and the first and third wall portions (61, 63) face each other. A second connecting portion (65) that is provided in a part of the region in the circumferential direction and connects the first and third wall portions (61, 63) to the first wall portion (61). The third bus ring (33) disposed on the one end face (65a) side in the direction of the rotation axis O of the second connecting portion (65) is prevented. The fourth bus is formed on the third wall (63) on the other end face (65b) side in the rotation axis O direction of the second connecting part (65). A fourth protrusion (630) that prevents the ring (34) from coming off is formed, and when viewed from the direction of the rotation axis O, the third and fourth protrusions (610b, 630) are the first and first protrusions. The wire holding member (6) according to [1], provided in a region where the second connecting portion (65) is not provided in a region where the three wall portions (61, 63) face each other.

[6] When viewed from the direction of the rotation axis O, the first connection portion (64) is provided on one side in the circumferential direction of the first wall portion (64), and the second connection portion (65) is the first connection portion (65). The electric wire holding member (6) according to [5], which is provided on the other side in the circumferential direction of the one wall portion (64).

[7] A manufacturing method for manufacturing the electric wire holding member (6) according to [5] or [6] by molding, wherein the first to fourth convex portions (610a, 620, 610b, 630) are respectively provided. An electric wire holding in which a recess for molding is formed by combining notches formed in first and second molds (upper mold 71 and lower mold 72) that move relatively in the direction of the rotation axis O. Manufacturing method of member (6).

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

  The present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the above embodiment, the winding 210 is drawn out so as to be positioned outside the power collection and distribution ring 11 in the direction orthogonal to the rotation axis O. However, the present invention is not limited thereto, and is orthogonal to the rotation axis O, for example. In such a direction, it may be drawn out so as to be located inside the power collection and distribution ring 11.

  Moreover, in the said embodiment, although there were multiple holding members 6, it is not restricted to this, For example, it is one holding member formed cyclically | annularly along the 1st-4th bus rings 31-34, Also good.

  Moreover, in the said embodiment, although the 1st-4th connection terminals 51-54 were formed in the member different from the 1st-4th bus rings 31-34, it is not restricted to this, For example, The first to fourth bus rings 31 to 34 may be bent to form portions corresponding to the connection terminals.

  Moreover, in the said embodiment, although the insulated wire was used for the 1st-4th bus rings 31-34, it is not restricted to this, For example, it is also possible to use the bus bar formed by the punching of the bare wire, the flat plate, etc. It is.

  Moreover, in the said embodiment, although the 1st-4th bus rings 31-34 were formed in circular shape, it is not restricted to this, For example, you may be formed in elliptical shape or polygonal shape.

  In the above-described embodiment, the first to fourth bus rings 31 to 34 are formed by bending one conductive member (insulated wire) in an annular shape. A plurality of conductive members connected to each other and formed in an annular shape may be used.

  Moreover, the mutual positional relationship of the 1st-4th bus rings 31-34 is not limited to the positional relationship described in the said embodiment.

DESCRIPTION OF SYMBOLS 1 ... Electric motor 6 ... Holding member (electric wire holding member)
7 ... Mold 11 ... Power collection / distribution ring 22 ... Rotors 31-34 ... First to fourth bus rings (first to fourth electric wires)
61-63 ... 1st-3rd wall part 61a, 61b, 62a, 63a ... Wall surface 64, 65 ... 1st and 2nd connection part 64a, 65a ... End surface (one end surface)
64b, 65b ... end face (other end face)
71 ... Upper mold (first mold)
72 ... Lower mold (second mold)
610a, 620, 610b, 630... First to fourth convex portions 700a, 700b... Concave portions 712a, 714a, 715a, 722a, 724a, 725a.

Claims (7)

An electric wire holding member made of resin for holding annular first and second electric wires arranged in parallel along the rotation axis direction of the rotor of the electric motor,
The first and second walls that are curved along the circumferential direction of the first and second electric wires and are opposed to each other so as to sandwich the first and second electric wires in a direction orthogonal to the rotation axis. And
A first connecting portion that is provided in a part of the circumferential direction in a region where the first and second wall portions oppose each other, and connects the first and second wall portions;
The first wall portion is formed with a first convex portion for preventing the first electric wire disposed on one end surface side in the rotation axis direction of the first connecting portion,
The second wall portion is formed with a second convex portion that prevents the second electric wire from being disposed on the other end surface side in the rotation axis direction of the first coupling portion,
When viewed from the rotational axis direction, the first and second convex portions are regions where the first connecting portion is not provided in a region where the first and second wall portions face each other. An electric wire holding member provided. The first and second protrusions extend along the circumferential direction,
The electric wire holding member according to claim 1. The first connecting portion is recessed in an arc shape so that the one end surface and the other end surface are along outer peripheral surfaces of the first and second electric wires,
The electric wire holding member according to claim 1 or 2. A manufacturing method for manufacturing the electric wire holding member according to any one of claims 1 to 3 by molding,
The concave portions for forming the first and second convex portions, respectively, are configured by combining notches formed in the first and second molds that move relative to each other in the rotational axis direction. Manufacturing method. Between the first wall portion and the wall surface of the first wall portion opposite to the second wall portion, an annular first parallel to the direction perpendicular to the rotation axis with respect to each of the first and second electric wires. A third wall portion disposed opposite to the first wall portion so as to sandwich the third and fourth electric wires, and curved along a circumferential direction of the third and fourth electric wires;
A second connecting part that is provided in a part of the circumferential direction in a region where the first and third wall parts oppose each other, and connects the first and third wall parts;
The first wall portion is formed with a third convex portion for preventing the third electric wire from being arranged on one end surface side in the rotation axis direction of the second connecting portion,
The third wall portion is formed with a fourth convex portion for preventing the fourth electric wire from being disposed on the other end surface side in the rotation axis direction of the second coupling portion,
When viewed from the direction of the rotation axis, the third and fourth convex portions are regions where the second connecting portion is not provided in a region where the first and third wall portions are opposed to each other. Provided,
The electric wire holding member according to claim 1. When viewed from the rotational axis direction, the first connecting portion is provided on one side of the circumferential direction of the first wall portion, and the second connecting portion is the peripheral portion of the first wall portion. Provided on the other side of the direction,
The electric wire holding member according to claim 5. A manufacturing method for manufacturing the wire holding member according to claim 5 or 6 by molding,
Recesses for forming the first to fourth protrusions are configured by combining notches formed in the first and second molds that move relative to each other in the rotational axis direction. Manufacturing method.