JP7268541B2 - Wiring member for rotary electric machine and its fixing structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wiring member for a rotating electric machine and a fixing structure thereof.

2. Description of the Related Art A wiring member for a rotating electrical machine that connects coil ends of a stator and electrodes of a terminal block in the rotating electrical machine is known. As such a wiring member for a rotating electric machine, there is provided a plurality of conductive wires and a holding portion formed by molding resin so as to collectively cover the plurality of conductive wires and holding the plurality of conductive wires. known (see, for example, Patent Document 1).

JP 2018-164378 A

In the wiring member for a rotary electric machine described in Patent Document 1, since the holding portion is not fixed to the surrounding member, when vibration is applied, the holding portion swings and the connecting portion between the conductive wire and the coil end is damaged. Otherwise, the holding portion may repeatedly collide with the stator core or the like, resulting in damage to the holding portion. In particular, wiring members for rotating electrical machines used in rotating electrical machines mounted on vehicles are affected by both the vibration of the cable connected to the electrode of the terminal block and the vibration of the rotating electrical machine, so damage due to vibration can be suppressed. It is required to take appropriate measures against vibration.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wiring member for a rotating electrical machine and a fixing structure thereof that can suppress damage due to vibration.

An object of the present invention is to solve the above-described problems by providing a wiring member for a rotating electric machine that has a plurality of conductive wires and connects coil ends of a stator and electrodes of a terminal block in the rotating electric machine. A holding portion formed by molding resin so as to collectively cover the conductive wires and holding the plurality of conductive wires is provided, and the holding portion includes a body portion for holding the plurality of conductive wires and the holding portion. Provided is a wiring member for a rotating electric machine, which integrally has a mounting portion for mounting to a member to be fixed, wherein the mounting portion is provided between the conductive wires extending from the main body portion toward the coil end side. do.

Further, in order to solve the above-mentioned problems, the present invention provides a wiring member for a rotating electric machine that has a plurality of conductive wires and connects coil ends of a stator and electrodes of a terminal block in the rotating electric machine. The wiring member for a rotating electric machine is formed by molding a resin so as to collectively cover the plurality of conductive wires, and has a holding portion for holding the plurality of conductive wires, The holding portion integrally has a body portion for holding the plurality of conductive wires and a mounting portion for mounting the holding portion to the member to be fixed, and the mounting portion extends from the body portion to the coil end side. Provided is a wiring member fixing structure for a rotating electric machine, which is provided between the extending conductive wires and fixes the holding portion to the member to be fixed by attaching the mounting portion to the member to be fixed. .

ADVANTAGE OF THE INVENTION According to this invention, the wiring member for rotary electric machines which can suppress the damage by vibration, and its fixing structure can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a configuration example of a rotating electrical machine including a fixing structure for a wiring member for a rotating electrical machine according to an embodiment of the present invention, where (a) is an overall view and (b) is a partially enlarged view of (a); FIG. 2 is a configuration diagram of the wiring member for rotating electric machine, the terminal block, and the stator core as seen from the axial direction; FIG. 4 is a perspective view showing a coil unit in which four coil pieces are combined; FIG. 4 is a perspective view showing a portion of the wiring member for a rotating electric machine together with linear portions of some of the plurality of coil pieces attached to the stator core. The wiring member for rotary electric machines is shown, (a) is an axial view, (b) is a circumferential view, and (c) is a perspective view. It is the perspective view which expanded the principal part of the wiring member for rotary electric machines. (a) is a cross-sectional view when the wiring member for rotating electric machine is fixed to the stator core, and (b) is an enlarged view of the B portion thereof. (a) is a cross-sectional view when a wiring member for a rotating electric machine is fixed to a stator core in a modified example of the present invention, and (b) to (d) are views showing modified examples of a fixing pin. (a) is sectional drawing at the time of fixing the wiring member for rotary electric machines to the stator core in the modification of this invention, (b) is a top view of a buffer member.

[Embodiment]
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a configuration example of a rotating electric machine provided with a fixing structure for a wiring member for a rotating electric machine according to the present embodiment, where (a) is an overall view and (b) is a partially enlarged view of (a).

The rotary electric machine 1 includes a wiring member 2 for the rotary electric machine, a terminal block 3, a rotor 4 having a shaft 11 inserted through its center, and a stator arranged so as to surround the rotor 4. 5. The rotor 4 has a plurality of magnets 42 embedded in a rotor core 41 made of soft magnetic metal, and rotates together with the shaft 11 . The stator 5 has a stator core 51 made of soft magnetic metal and a plurality of coil pieces 52 .

The rotary electric machine 1 is mounted on a vehicle driven by electric power, such as an electric vehicle or a so-called hybrid vehicle. In the following description, a case where the rotating electrical machine 1 is used as an electric motor will be described, but the rotating electrical machine 1 can also be used as a generator. In the following description, the direction parallel to the rotation axis O of the shaft 11 is called the axial direction, and the direction passing through the rotation axis O and perpendicular to the rotation axis O is called the radial direction. The direction perpendicular to it is called the circumferential direction.

FIG. 2 is a configuration diagram of the wiring member 2 for rotating electric machine, the terminal block 3, and the stator core 51 viewed from the axial direction. FIG. 3 is a perspective view showing a coil unit 50 in which four coil pieces 52 are combined. In the following description, for convenience of explanation, of the two axial sides of the stator core 51, the side on which the wiring member 2 for rotating electric machine and the terminal block 3 are arranged is called the upper side, and the opposite side is called the lower side. However, the upper side and the lower side do not specify the vertical direction when mounted on a vehicle.

The terminal board 3 has a base board 30 made of resin and first to third electrodes 31 to 33 . The base 30 is fixed to a housing (not shown) that accommodates the stator 5, and three-phase alternating current is supplied to the first to third electrodes 31 to 33 from a controller.

The stator core 51 integrally has a cylindrical back yoke 511 and a plurality of teeth 512 projecting radially inward from the back yoke 511 . In this embodiment, 72 teeth 512 are provided at regular intervals in the circumferential direction, and slots 510 are formed between teeth 512 adjacent in the circumferential direction.

Each coil piece 52 includes a pair of linear main body portions 521 accommodated in slots 510 of the stator core 51, a pair of inclined portions 522 protruding from the slots 510 and arranged above the stator core 51, and respective inclined portions. It has a pair of linear portions 523 extending axially further upward from the upper end of 522 and a connection portion 524 connecting the pair of main body portions 521 below the stator core 51 . The inclined portion 522 is inclined at an obtuse angle with respect to the main body portion 521 .

The coil piece 52 is composed of a conductive metal 52M having good conductivity such as copper or aluminum, and an electrically insulating coating layer 52I covering the surface of the conductive metal 52M. In this embodiment, the conductive metal 52M is a rectangular single wire having a rectangular cross section, and the coating layer 52I is made of enamel coating. At the coil end 520, which is the upper end of the straight portion 523, the coating layer 52I is removed to expose the conductive metal 52M.

Moreover, in the present embodiment, 288 coil pieces 52 are attached to the stator core 51 and each slot 510 accommodates eight body portions 521 . The 288 coil pieces 52 are welded together at their coil ends 520 to form two sets of three-phase (U-phase, V-phase, and W-phase) stator windings. Further, of the two sets of three-phase stator windings, the first set of three-phase stator windings and the second set of three-phase stator windings are out of phase with each other by a predetermined electrical angle. The first set of three-phase stator windings is formed closer to the outer circumference of stator core 51 than the second set of three-phase stator windings. Note that the welded portions between the coil ends 520 may be coated with resin.

FIG. 4 is a perspective view showing a portion of the wiring member 2 for a rotating electric machine together with straight portions 523 of some of the plurality of coil pieces 52 attached to the stator core 51 . FIG. 5 shows the wiring member 2 for rotating electric machine, (a) is an axial view, (b) is a circumferential view, and (c) is a perspective view.

The wiring member 2 for a rotating electric machine has six conductive wires and three terminals, and connects the first to third electrodes 31 to 33 of the terminal block 3 and the coil ends 520 of the coil pieces 52 of each phase, respectively. Connecting. As a wiring member for a rotating electric machine, a so-called bus ring in which conductive wires are formed in a ring shape is known. It is a non-annular wiring member that is not formed in a ring. Also, the six conductive wires are rigid enough to retain their shape.

The six conductive wires are first and second U-phase leads 21, 22, first and second V-phase leads 23, 24, and first and second W-phase leads 25, 26. consists of The three terminals consist of a U-phase terminal 27 , a V-phase terminal 28 and a W-phase terminal 29 . The U-phase terminal 27 has a plate portion 271 connected to the first electrode 31 of the terminal block 3 and a crimping portion 272 to which the first and second U-phase lead wires 21 and 22 are crimped together. ing. A bolt insertion hole 270 is formed in the plate portion 271 , and the plate portion 271 is connected to the first electrode 31 by a bolt 34 (see FIG. 2 ) inserted through the bolt insertion hole 270 .

Similarly, the V-phase terminal 28 includes a plate portion 281 connected to the second electrode 32 of the terminal block 3 and a crimping portion 282 to which the first and second V-phase lead wires 23 and 24 are crimped together. have. A bolt insertion hole 280 is formed in the plate portion 281 , and the plate portion 281 is connected to the second electrode 32 by a bolt 35 (see FIG. 2 ) inserted through the bolt insertion hole 280 . Similarly, the W-phase terminal 29 includes a plate portion 291 connected to the third electrode 33 of the terminal block 3 and a crimping portion 292 to which the first and second W-phase lead wires 25 and 26 are crimped together. and A bolt insertion hole 290 is formed in the plate portion 291 , and the plate portion 291 is connected to the third electrode 33 by a bolt 36 (see FIG. 2 ) inserted through the bolt insertion hole 290 .

The first U-phase lead wire 21, the first V-phase lead wire 23, and the first W-phase lead wire 25 connect the terminals 27, 28, 29 of each phase and the first set of three-phase stator windings. The coil ends 520 of the coil pieces 52 corresponding to the ends of the U-phase, V-phase, and W-phase stator windings are electrically connected. A second U-phase lead wire 22, a second V-phase lead wire 24, and a second W-phase lead wire 26 connect the terminals 27, 28, 29 of each phase and the second set of three-phase stator windings. The coil ends 520 of the coil pieces 52 corresponding to the ends of the U-phase, V-phase, and W-phase stator windings are electrically connected.

The first and second U-phase leads 21, 22, the first and second V-phase leads 23, 24, and the first and second W-phase leads 25, 26 are each made of a conductive metal. The surface of the conductor 2M is covered with an electrically insulating covering layer 2I. As the conductive metal, for example, copper or a copper alloy can be preferably used. An enamel coating can be preferably used as the coating layer 2I. The conductor 2M is a single wire (single metal conductor that is not a stranded wire), and in the present embodiment, a round single wire having a circular cross section is formed into a predetermined shape by press working. However, the conductor 2M may be formed of a flat single wire having a rectangular cross section.

Also, the wiring member 2 for rotating electric machine includes first and second U-phase lead wires 21 and 22, first and second V-phase lead wires 23 and 24, and first and second W-phase lead wires 25. , 26 are held by the first holding portion 201 . The first holding portion 201 is one aspect of the holding portion of the present invention, and includes the first and second U-phase lead wires 21 and 22, the first and second V-phase lead wires 23 and 24, and the first and second W-phase lead wires 25 and 26 are molded with resin. Also, the second V-phase lead wire 24 and the first W-phase lead wire 25 are held by the second holding portion 202 . Furthermore, the first U-phase lead wire 21 , the first V-phase lead wire 23 , and the second W-phase lead wire 26 are held by the third holding portion 203 . The first to third holding portions 201 to 203 are formed apart from each other, and the first holding portion 201 and the second holding portion 202 are connected by a connecting portion 204. and the third holding portion 203 are connected by a connecting portion 205 . The first to third holding portions 201 to 203 and connecting portions 204 and 205 are made of resin integrally molded by injection molding. The first to third holding parts 201 to 203 and connecting parts 204 and 205 preferably have rigidity to hold the conductive wires, and can be made of PPS (polyphenylene sulfide), for example. The detailed shape and the like of the first holding portion 201 will be described later.

The first U-phase lead wire 21, the first V-phase lead wire 23, and the first W-phase lead wire 25 are axially extended from the first holding portion 201 and connected to terminals 27 and 28 of respective phases. , 29, extension portions 212, 232, and 252 extending from the first holding portion 201 and extending in a direction perpendicular to the axial direction, and an extension portion 212. , 232 and 252 extending in the axial direction upward, and connection portions 214 , 234 and 254 welded to the coil ends 520 of the coil pieces 52 . have.

The connection portions 214 , 234 , 254 axially extend further upward from the upper ends of the axially extending portions 213 , 233 , 253 and project from the stator core 51 in the axial direction. They are welded to the coil ends 520 of the coil pieces 52 corresponding to the ends of the U-phase, V-phase, and W-phase stator windings of the phase stator windings. In addition, the first U-phase lead wire 21, the first V-phase lead wire 23, and the first W-phase lead wire 25 have the coating layer 2I over a predetermined length range including the connection portions 214, 234, and 254. removed to expose the conductor 2M.

A second U-phase lead wire 22, a second V-phase lead wire 24, and a second W-phase lead wire 26 are axially extended from the first holding portion 201 and connected to terminals 27 and 28 of respective phases. , 29, extension portions 222, 242, and 262 extending from the first holding portion 201 and extending in a direction perpendicular to the axial direction, and an extension portion 222. , 242, 262 extending axially upward from the ends of the axially extending portions 223, 243, 263 and further radially extending from the ends of the axially extending portions 223, 243, 263. radially extending portions 224 , 244 , 264 extending inward of the stator core 51 , and connections bent radially along the circumferential direction of the stator core 51 and welded to the coil ends 520 of the coil pieces 52 . It has parts 225 , 245 , 265 .

Connecting portions 225 , 245 , 265 extend circumferentially from the radially inner ends of radially extending portions 224 , 244 , 264 and project axially from stator core 51 to form a second set of three-phase stators. They are welded to the coil ends 520 of the coil pieces 52 corresponding to the ends of the U-phase, V-phase, and W-phase stator windings of the child windings. In addition, the second U-phase lead wire 22, the second V-phase lead wire 24, and the second W-phase lead wire 26 have the coating layer 2I over a predetermined length range including the connection portions 225, 245, and 265. removed to expose the conductor 2M. The connection portions 225 , 245 , 265 are bent in the circumferential direction of the stator core 51 from the radially inner ends of the radially extending portions 224 , 244 , 264 and extend along the circumferential direction.

The connection portions 225, 245, 265 of the second U-phase lead wire 22, the second V-phase lead wire 24, and the second W-phase lead wire 26 are connected to the first U-phase lead wire 21, the first V-phase lead wire It is connected to the coil end 520 inside the stator core 51 in the radial direction of the connection portions 214 , 234 , 254 of the phase lead wire 23 and the first W-phase lead wire 25 . The surfaces of the connection portions 214, 225, 234, 245, 254, and 265 facing the coil end 520 are flattened by press working.

In the present embodiment, welding between connection portions 214, 225, 234, 245, 254, and 265 and coil ends 520 of coil pieces 52 is performed by TIG (Tungsten Gas), which is a kind of arc discharge welding method using inert gas. inert gas) welding. During TIG welding, the stator 5 is fixed to a jig so that the coil ends 520 protrude upward from the stator core 51 in the vertical direction, and the electrode of the welding torch faces the coil ends 520 in the axial direction.

Taking the second U-phase lead wire 22 and the first W-phase lead wire 25 as examples, as shown in FIG. A portion of the coil end 520 protruding in the axial direction beyond the connecting portions 225 and 254 is melted by the heat generated by the discharge and welded to the connecting portions 225 and 254 . The molten metal melted at the tip of the coil end 520 flows down to the upper side surface 225 a of the connection portion 226 of the second U-phase lead wire 22 and the upper surface 255 a of the connection portion 254 of the first W-phase lead wire 25 . come into contact with However, not limited to this, the tip surface of the coil end 520, the upper side surface 225a of the connecting portion 225, and the upper surface 254a of the connecting portion 254 may be positioned at the same axial position. That is, coil end 520 does not have to protrude further in the axial direction than connecting portions 225 and 254 .

(Details of first holding portion 201)
FIG. 6 is an enlarged perspective view of a main part of the wiring member 2 for rotating electric machine. FIG. 7(a) is a cross-sectional view of a wiring member for a rotating electric machine fixed to a stator core, and FIG. 7(b) is an enlarged view of a portion B thereof.

As shown in FIGS. 5 to 7, the first holding portion 201 is formed by molding resin so as to collectively cover the six conductive wires, and holds the six conductive wires. In the wiring member 2 for a rotating electric machine according to the present embodiment, the first holding portion 201 has a body portion 201a holding six conductive wires, and the first holding portion 201 is attached to the stator core 51 as a member to be fixed. It integrally has a mounting portion 201b for mounting. Although the case where the member to be fixed is the stator core 51 will be described here, the member to be fixed is not limited to this, and may be a housing that accommodates the stator core 51 . Also, the member to be fixed may be an insulating plate or a metal plate arranged on the stator core 51 .

In the present embodiment, mounting portion 201b is formed with through hole 201c through which bolt 53 is inserted for fastening and fixing mounting portion 201b to stator core 51 as a member to be fixed. By threading the bolt 53 through the through-hole 201c and screwing it into the screw hole 51a formed in the stator core 51, the mounting portion 201b is fastened and fixed to the stator core 51, and the wiring member 2 for rotating electric machine including the first holding portion 201 is provided. is fixed to the stator core 51 . That is, in the fixing structure of the wiring member for a rotary electric machine according to the present embodiment, the bolt 53 inserted through the through hole 201c of the mounting portion 201b is fastened and fixed to the stator core 51 as a member to be fixed, so that the mounting portion 201b is fixed to the stator core. It is a structure attached to 51. With this configuration, the wiring member 2 for a rotating electric machine is prevented from swinging due to vibration. or damage to the first holding portion 201 due to repeated collisions of the first holding portion 201 with the stator core 51 . When an insulating plate or a metal plate arranged on the stator core 51 is used as the member to be fixed, a screw hole for screwing the bolt 53 may be formed in the insulating plate or the metal plate. 51a can be omitted.

In the present embodiment, attachment portion 201b is provided between conductive wires extending from body portion 201a to coil end 520 side. Here, a mounting portion 201 b is provided between the second V-phase lead wire 24 and the first W-phase lead wire 25 and the second U-phase lead wire 22 . Mounting portion 201b is provided integrally with body portion 201a so as to protrude from body portion 201a toward the center of stator core 51 in a direction perpendicular to the axial direction. For example, if the mounting portion 201b is provided on the side opposite to the conductive wire extending to the coil end 520 side, the protrusion of the mounting portion 201b increases the size of the wiring member 2 for the rotating electric machine, so that the wiring for the rotating electric machine can be installed in a narrow space. Arranging the member 2 may be difficult. By providing the mounting portion 201b between the conductive wires extending from the main body portion 201a to the coil end 520 side as in the present embodiment, the wiring member 2 for a rotating electric machine can be kept compact and can be rotated even in a narrow space. It becomes possible to arrange the electrical wiring member 2 .

In the present embodiment, the insertion direction of the bolt 53 into the through hole 201c of the mounting portion 201b and the insertion of the bolts 34, 35, 36 into the bolt insertion holes 270, 280, 290 of the terminals 27, 28, 29 of each phase are different. The direction is the same direction (direction parallel to the axial direction). As a result, the bolts 34, 35, 36, 53 can be tightened in the same direction, and the bolts 34, 35, 36, 53 can be easily tightened.

Further, the first holding portion 201 extends from the main body portion 201 so as to cover the conductive wires (extending portions 212, 222, 232, 242, 252, 262) extending from the main body portion 201a toward the coil end 520 side. It has a plurality of protruding portions 201d to 201f. In the present embodiment, a first projecting portion 201d is provided so as to cover the periphery of the portion extending from the body portion 201a of the extending portion 222 . A second projecting portion 201e is provided so as to collectively cover the extension portions of the extending portions 242 and 252 extending from the main body portion 201a. Further, a third projecting portion 201f is provided so as to collectively cover the extension portions of the extending portions 212, 232, and 262 extending from the main body portion 201a. Each projecting portion 201d to 201f is provided integrally with the body portion 201a so as to project from the body portion 201a in a direction perpendicular to the axial direction.

In the present embodiment, the mounting portion 201b is provided so as to connect adjacent projecting portions. Here, a mounting portion 201b is provided so as to connect the first projecting portion 201d and the second projecting portion 201e. Since the first projecting portion 201d is formed to cover one conductive wire and the second projecting portion 201e is formed to cover two conductive wires, the third projecting portion is formed to cover three conductive wires. It is smaller and weaker than 201f. By providing the mounting portion 201b so as to connect the first and second projecting portions 201d and 201e having low strength, the first and second projecting portions 201d and 201e can be reinforced, and the mounting portion 201b itself strength is also improved. In addition, the attachment part 201b may be provided so that the 2nd and 3rd protrusion parts 201e and 201f may be connected without restricting to this.

In addition, the first holding portion 201 is arranged so as to cover the conductive wires (extending portions 211, 221, 231, 241, 251, 261) extending from the main body portion 201a toward the terminals 27, 28, 29 of each phase. , a plurality of terminal-side projecting portions 201g to 201i projecting from the body portion 201. As shown in FIG. In this embodiment, a first terminal-side projecting portion 201g is provided so as to collectively cover the periphery of the projecting portions of the projecting portions 211 and 221 from the main body portion 201a. A second terminal-side projecting portion 201h is provided so as to collectively cover the periphery of the projecting portions of the projecting portions 231 and 241 from the main body portion 201a. Furthermore, a third terminal-side projecting portion 201i is provided so as to collectively cover the periphery of the projecting portions of the projecting portions 251 and 261 from the main body portion 201a. Each of the terminal-side protruding portions 201g to 201i is provided integrally with the main body portion 201a so as to protrude from the main body portion 201a in the axial direction.

The thickness h of the mounting portion 201b is thinner than the thickness H of the main body portion 201a. As a result, the bolt 53 is prevented from protruding greatly upward when the mounting portion 201b is fastened and fixed by the bolt 53, making it possible to provide the wiring member 2 for a rotating electrical machine in a narrow space. The thickness h of the mounting portion 201b is thinner than the thicknesses of the protruding portions 201d to 201f and thinner than the thicknesses of the terminal side protruding portions 201g to 201i. The thickness h of the mounting portion 201b may be set in consideration of the material of the resin used for the first holding portion 201, and may be set to a thickness that provides sufficient fixing strength against vibration during use. A ring-shaped member made of metal or the like may be provided on the inner peripheral surface of the through hole 201c in order to suppress creep deformation during fastening and fixing.

When attaching the wiring member 2 for a rotating electrical machine to the stator core 51, first, the connection portions 214, 225, 234, 245, 254, and 265 and the coil ends 520 of the coil pieces 52 are welded by TIG welding, and then the attachment portion 201 b is fastened and fixed to the stator core 51 with bolts 53 . The through-hole 201c is formed so that the bolt 53 can be screwed into the screw hole 51a through the through-hole 201c even if there is some positional deviation when welding the connecting portions 214, 225, 234, 245, 254, and 265. It is desirable that it be formed larger than the screw hole 51a. Even if first holding portion 201 is not in contact with stator core 51 after welding, first holding portion 201 is pressed against the upper surface of stator core 51 by fastening mounting portion 201 b to stator core 51 . , will be fixed.

(Modification)
In the present embodiment, the case where the mounting portion 201b is fastened and fixed to the stator core 51 by the bolts 53 has been described. The mounting portion 201b may be mounted on the stator core 51 by inserting the through hole 201c of the mounting portion 201b. The fixing pin 51b is provided on the upper surface of the stator core 51 so as to protrude upward. As a result, the wiring member 2 for rotating electrical machine can be attached to the stator core 51 only by pushing the fixing pin 51b into the through hole 201c, and the work of attaching the wiring member 2 for rotating electrical machine to the stator core 51 is facilitated.

The fixing pin 51b is formed in a substantially columnar shape, and the corners of the upper surface thereof are rounded so that the fixing pin 51b can be easily inserted into the through hole 201c. The shape of the fixing pin 51b is not limited to this, and as shown in FIG. As shown in FIG. 8(c), it may be formed in a tapered shape so that the diameter becomes smaller toward the tip. Further, as shown in FIG. 8(d), a claw portion 51c protruding radially outward is provided at the distal end portion, and the claw portion 51c interferes with the mounting portion 201b on the peripheral edge of the through hole 201c, whereby the fixing pin 51b is fixed. It may be configured such that the mounting portion 201b is less likely to fall off from.

Furthermore, as shown in FIGS. 9A and 9B, a cushioning member 101 made of an elastic material may be provided between the bottom surface of the first holding portion 201 and the top surface of the stator core 51 . By providing the buffer member 101, the bottom surface of the first holding portion 201 and the top surface of the stator core 51 are in close contact with each other through the interference member 101, and the vibration causes the first holding portion 201 to repeatedly collide with the stator core 51 and break. is suppressed. The cushioning member 101 may be made of an elastic sheet-like member, or may be formed integrally with the first holding portion 201 by two-color molding. When a sheet-like member is used as cushioning member 101 , cushioning member 101 is preferably fixed to at least one of first holding portion 201 and stator core 51 . For example, one surface (upper surface) of the buffer member 101 is adhesively fixed to the bottom surface of the first holding portion 201 , and the other surface (lower surface) of the buffer member 101 is attached to the stator core 51 when the wiring member 2 for rotating electric machine is attached. may be configured to be adhesively fixed to the upper surface of the Alternatively, the cushioning member 101 may be adhesively fixed to the upper surface of the stator core 51 in advance, and the first holding portion 201 and the cushioning member 101 may be adhesively fixed when the wiring member 2 for rotating electric machine is attached.

In order to suppress the occurrence of gaps and tilts when fastening and fixing with the bolts 53, the cushioning member 101 includes at least a main body protection portion 101a covering the bottom surface of the main body portion 201a and a mounting portion protection portion 101b covering the bottom surface of the mounting portion 201b. and desirably. A through hole 101c through which the bolt 53 is inserted is formed in the mounting portion protection portion 101b. In this embodiment, the cushioning member 101 has first to third protrusion protection portions 101d to 101f covering the bottom surfaces of the first to third protrusions 201d to 201f. It is formed so as to cover the entire bottom surface of 201 . Note that the cushioning member 101 may not be integrated, and for example, the main body protection portion 101a and the mounting portion protection portion 101b may be separated.

Further, in the present embodiment, the case where the first protection portion 201 has one mounting portion 201b has been described, but the present invention is not limited to this, and the first holding portion 201 may have a plurality of mounting portions 201b. good too. Further, when the first holding portion 201 has one attachment portion 201b, in order to fix the first protection portion 201 in a well-balanced manner, the longitudinal direction of the main body portion 201a (extending portions 211, 221, 231, 241, The mounting portion 201a may be provided substantially in the center in the arrangement direction of 251 and 261 (vertical direction in FIG. 5A).

Moreover, in the present embodiment, the second holding portion 202 and the third holding portion 203 are not in contact with the upper surface of the stator core 51 and are provided apart from the stator core 51 . In order to prevent the second holding portion 202 and the third holding portion 203 from colliding with the stator core 51 and being damaged, the second holding portion 202 and the third holding portion 203 are brought into contact with the upper surface of the stator core 51 . may be provided. Furthermore, the second protection section 202 and the third protection section 203 may also be separately provided with mounting portions.

In addition, although not mentioned in the above embodiment, a resin mold may be further provided so as to partially cover the stator core 51, the coil pieces 52, and the wiring member 2 for rotating electric machine as members to be fixed. In the present embodiment, since the first holding portion 201 is fastened and fixed to the stator core 51 as a member to be fixed, the positional deviation of the wiring member 2 for a rotating electrical machine may occur due to the resin pressure during resin molding. can be suppressed.

(Actions and effects of the embodiment)
As described above, in the wiring member 2 for a rotating electric machine according to the present embodiment, the first holding portion 201 includes the body portion 201a holding a plurality of conductive wires, and the first holding portion 201 as a member to be fixed. A mounting portion 201b for mounting to the stator core 51 is integrally provided, and the mounting portion 201b is provided between conductive wires extending from the main body portion 201a to the coil end 520 side.

As a result, the first holding portion 201 can be attached to the stator core 51 via the attachment portion 201b while the wiring member 2 for rotating electric machine is kept compact, and the first holding portion 201 swings to provide conduction. Damage to the connecting portion between the wire and the coil end 520 and damage to the first holding portion 201 due to repeated collisions of the first holding portion 201 with the stator core 51 are suppressed.

(Summary of embodiment)
Next, technical ideas understood from the embodiments described above will be described with reference to the reference numerals and the like in the embodiments. However, each reference numeral and the like in the following description do not limit the constituent elements in the claims to the members and the like specifically shown in the embodiment.

[1] Rotation that has a plurality of conductive wires (21 to 26) and connects the coil end (520) of the stator (5) and the electrodes (31 to 33) of the terminal block (3) in the rotating electric machine (1) An electric wiring member (2), which is formed by molding a resin so as to collectively cover the plurality of conductive wires (21 to 26), and a holding portion for holding the plurality of conductive wires (21 to 26). (201), wherein the holding part (201) includes a body part (201a) for holding the plurality of conductive wires (21 to 26) and an attachment part for attaching the holding part (201) to a member to be fixed. (201b) integrally, and the attachment portion (201b) is provided between the conductive wires (21 to 26) extending from the main body portion (201a) toward the coil end (520). , a wiring member for rotating electric machine (2).

[2] The holding portion (201) is configured to cover the conductive wires (21 to 26) extending from the main body (201a) toward the coil end (520). having a plurality of projecting portions (201d to 201f) protruding from the mounting portion (201b) is provided to connect the adjacent projecting portions (201d to 201f), [1] 2. The wiring member for rotary electric machine (2) according to 1.

[3] The mounting portion (201b) is formed with a through hole (201c) through which a bolt (53) is inserted for fastening and fixing the mounting portion (201b) to the member to be fixed. ] or the wiring member for rotary electric machines (2) as described in [2].

[4] At the ends of the conductive wires (21-26) extending from the main body (201a) toward the terminal block (3), the electrodes (31-33) of the terminal block (3) Terminals (27 to 29) to be connected are provided, and the terminals (27 to 29) are fastened and fixed to the electrodes (31 to 33) of the terminal block (3). Bolt insertion holes (270, 280, 290) through which bolts (34 to 36) are inserted are formed to insert the bolt (53) into the through hole (201c) of the mounting portion (201b). Rotation according to [3], wherein the insertion direction and the insertion direction of the bolts (34-36) into the bolt insertion holes (270, 280, 290) of the terminals (27-29) are the same. Electrical wiring member (2).

[5] The wiring member (2) for a rotary electric machine according to any one of [1] to [4], wherein the attachment portion (201b) is thinner than the main body portion (201a).

[6] Rotation that has a plurality of conductive wires (21-26) and connects the coil end (520) of the stator (5) and the electrodes (31-33) of the terminal block (3) in the rotating electric machine (1) A fixing structure for fixing an electrical wiring member (2) to a member to be fixed, wherein the electrical wiring member (2) is made of resin so as to collectively cover the plurality of conductive wires (21 to 26). and includes a holding portion (201) for holding the plurality of conductive lines (21 to 26), wherein the holding portion (201) is a body portion for holding the plurality of conductive lines (21 to 26) (201a) and an attachment portion (201b) for attaching the holding portion (201) to the member to be fixed are integrally formed, and the attachment portion (201b) extends from the body portion (201a) to the coil end ( 520) side, and by attaching the mounting portion (201b) to the member to be fixed, the holding portion (201) is attached to the member to be fixed. A fixing structure for a wiring member for a rotating electric machine, which is fixed to a rotating electric machine.

[7] A through hole (201c) is formed in the mounting portion (201b), and a bolt (53) inserted through the through hole (201c) is fastened and fixed to the member to be fixed, whereby the mounting portion is The structure for fixing a wiring member for a rotary electric machine according to [6], wherein (201b) is attached to the member to be fixed.

[8] A through hole (201c) is formed in the mounting portion (201b), and a fixing pin (51b) protruding from the member to be fixed is inserted into the through hole (201c), thereby The structure for fixing a wiring member for a rotating electrical machine according to [6], wherein the attachment portion (201b) is attached to the member to be fixed.

Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the scope of claims. Also, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention. Moreover, the present invention can be modified appropriately without departing from the gist thereof.

REFERENCE SIGNS LIST 1 rotating electric machine 100 wiring member fixing structure for rotating electric machine 101 cushioning member 2 wiring member for rotating electric machine 21 first U-phase lead wire (conductive wire)
22... Second U-phase lead wire (conductive wire)
23... First V-phase lead wire (conductive wire)
24... Second V-phase lead wire (conductive wire)
25... First W-phase lead wire (conductive wire)
26... Second W-phase lead wire (conductive wire)
201... First holding portion (holding portion)
201a...Main body part 201b...Mounting part 201c...Through hole 201d...First projecting part (projecting part)
201e ... second projection (projection)
201f... Third projection (projection)
202... Second holding portion 203... Third holding portion 27... U-phase terminal (terminal)
270: bolt insertion hole 28: V-phase terminal (terminal)
280: bolt insertion hole 29: W-phase terminal (terminal)
290... Bolt insertion hole 3... Terminal block 31... First electrode (electrode)
32... Second electrode (electrode)
33... Third electrode (electrode)
34 to 36... bolt 5... stator 51... stator core 520... coil end 53... bolt

Claims (7)

A wiring member for a rotating electric machine having a plurality of conductive wires and connecting coil ends of a stator and electrodes of a terminal block in the rotating electric machine,
each of the plurality of conductive wires has a connection portion that contacts the coil end;
a holding portion formed by molding resin so as to collectively cover the plurality of conductive wires and holding the plurality of conductive wires;
The holding portion integrally has a main body portion holding the plurality of conductive wires and an attachment portion for attaching the holding portion to a member to be fixed,
The mounting portion is provided between the conductive wires extending from the main body portion to the coil end side,
The holding portion has a plurality of projecting portions projecting from the body portion toward the connection portion so as to cover the periphery of the conductive wire extending from the body portion toward the coil end,
The mounting portion is provided so as to connect the adjacent projecting portions, and is provided so as to protrude from the main body portion toward the connecting portion.
Wiring member for rotary electric machine. The mounting portion is formed with a through hole through which a bolt for fastening and fixing the mounting portion to the member to be fixed is inserted.
The wiring member for a rotary electric machine according to claim 1 . A terminal connected to the electrode of the terminal block is provided at an end of the conductive wire extending from the main body portion toward the terminal block,
The terminal is formed with a bolt insertion hole through which a bolt for fastening and fixing the terminal to the electrode of the terminal block is inserted,
The direction in which the bolt is inserted into the through hole of the mounting portion is the same as the direction in which the bolt is inserted into the bolt insertion hole of the terminal,
The wiring member for a rotary electric machine according to claim 2 . The thickness of the mounting portion is thinner than the thickness of the body portion,
The wiring member for a rotary electric machine according to any one of claims 1 to 3 . A fixing structure for fixing a wiring member for a rotating electric machine having a plurality of conductive wires and connecting coil ends of a stator and electrodes of a terminal block in the rotating electric machine to a member to be fixed,
each of the plurality of conductive wires has a connection portion that contacts the coil end;
The wiring member for a rotating electric machine is formed by molding resin so as to collectively cover the plurality of conductive wires, and includes a holding portion for holding the plurality of conductive wires,
The holding portion integrally has a body portion holding the plurality of conductive wires and an attachment portion for attaching the holding portion to the member to be fixed,
The mounting portion is provided between the conductive wires extending from the main body portion to the coil end side,
fixing the holding portion to the member to be fixed by attaching the attachment portion to the member to be fixed ;
The holding portion has a plurality of projecting portions projecting from the body portion toward the connection portion so as to cover the periphery of the conductive wire extending from the body portion toward the coil end,
The mounting portion is provided so as to connect the adjacent projecting portions, and is provided so as to protrude from the main body portion toward the connecting portion.
Fixing structure for wiring members for rotating electric machines. A through hole is formed in the mounting portion, and the mounting portion is mounted to the member to be fixed by fastening and fixing a bolt inserted through the through hole to the member to be fixed,
The structure for fixing a wiring member for a rotary electric machine according to claim 5 . A through hole is formed in the mounting portion, and the mounting portion is mounted to the member to be fixed by inserting a fixing pin projecting from the member to be fixed into the through hole.
The structure for fixing a wiring member for a rotary electric machine according to claim 5 .

Images