JP2020181762A - Stator unit, rotary electric machine, and manufacturing method for stator unit - Google Patents

Abstract

To provide a stator unit, capable of being easily manufactured, having a terminal capable of fixing a plurality of conducting wires without generating gas.SOLUTION: A stator unit 2 has a stator 20 having a coil 26, a plurality of lead wires 51, located at a tip of a coil end of the coil 26, having a core wire 51a and an insulating portion 51b made of insulating material for covering an outer peripheral surface of the core wire 51a, and a terminal 52 connected to the lead wires 51, and a conductive connecting member 60. The core wire 51a has an end face 51c exposed without being covered by the insulating portion 51b. By connecting the connecting member 60 to an end face of the core wire 51a and connecting to the terminal 52, the lead wires 51 are fixed to the terminal 52, and the core wire 51a of the lead wires 51 and the terminal 52 are electrically connected.SELECTED DRAWING: Figure 2

Description

The present invention relates to a stator unit, a rotary electric machine, and a method for manufacturing the stator unit.

A stator unit having a terminal for bundling and fixing a plurality of conducting wires is known. In Patent Document 1, as a method of connecting a plurality of conducting wires, the tip portions of a plurality of conductive windings from which the insulating coating has been removed and the tip portions of a plurality of lead wires are overlapped, and the overlapped portion is metal from the outside. A wiring method is disclosed in which the conductive winding and the lead wire are electrically and mechanically connected to terminals by caulking and closing with a pipe or the like.

Further, in Patent Document 2 and Patent Document 3, as a method of bundling a plurality of electric wires and fixing them to terminals, a plurality of electric wires are inserted into the terminals, and a load is applied to the terminals to apply pressure while energizing. The energization caulking that crimps the electric wire to the terminal is disclosed. In the energization caulking disclosed in Patent Document 2 and Patent Document 3, the insulating films of the plurality of electric wires are melted and removed.

JP-A-2002-84701. JP-A-2005-63710 Japanese Unexamined Patent Publication No. 2005-347027

The configuration disclosed in Patent Document 1 requires a step of removing the conductive winding (conductor wire) and the insulating coating (insulating portion) at the tip of the lead wire in advance. Further, in the configurations disclosed in Patent Document 2 and Patent Document 3, gas may be generated when the insulating film (insulating portion) of the electric wire (lead wire) is melted. As described above, in the conventional configuration, since the terminal is crimped to the conducting wire, a crimping step is required. In addition, a work process for removing the insulating portion of the conducting wire may be required, or gas may be generated when the insulating portion of the conducting wire is melted and removed.

An object of the present invention is to provide a stator unit, a rotary electric machine, and a method for manufacturing a stator unit, which can be easily manufactured and has a terminal structure capable of fixing a plurality of conducting wires without generating gas.

The stator unit according to the embodiment of the present invention has a plurality of conductors having a stator having a coil, a core wire electrically connected to the coil, and an insulating portion made of an insulating material and covering the outer peripheral surface of the core wire. And a terminal connected to the plurality of conducting wires, and a conductive connecting member. The core wire has an end face that is exposed without being covered by the insulating portion. By connecting the connecting member to the end face of the core wire and connecting to the terminal, the plurality of conductors are fixed to the terminal and the core wire of the plurality of conductors and the terminal are electrically connected. ..

The rotary electric machine according to the embodiment of the present invention has the above-mentioned stator unit.

The method for manufacturing a stator unit according to an embodiment of the present invention is for a plurality of conducting wires having a core wire electrically connected to the coil of the stator and an insulating portion made of an insulating material and covering the outer peripheral surface of the core wire. The wire arranging step of arranging the tip at the wire mounting position of the terminal, and the end face of the core wire exposed by pouring solder into the wire mounting position without being covered by the insulating portion of the plurality of wires. It has a wire connecting step of connecting the terminal and fixing the plurality of wires to the terminal by the solder.

According to the stator unit according to the embodiment of the present invention, a stator unit, a rotary electric machine, and a method for manufacturing the stator unit, which can be easily manufactured and have a terminal structure capable of fixing a plurality of conducting wires without generating gas. Can be provided.

FIG. 1 is a side view of the motor according to the embodiment. FIG. 2 is a perspective view showing a schematic configuration of a terminal structure. FIG. 3 is a sectional view taken along line III-III of FIG. FIG. 4 is a cross-sectional view of the conducting wire. FIG. 5 is a perspective view of the terminals. FIG. 6 is a sectional view taken along line VI-VI of FIG. FIG. 7 is a cross-sectional view of a terminal structure according to another embodiment. FIG. 8 is a cross-sectional view of a terminal structure according to another embodiment. FIG. 9 is a cross-sectional view of a terminal structure according to another embodiment. FIG. 10 is a cross-sectional view of a terminal structure according to another embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated. Further, the dimensions of the constituent members in each drawing do not faithfully represent the actual dimensions of the constituent members and the dimensional ratio of each constituent member.

Further, in the following description, the expressions such as "fixed", "connected" and "attached" (hereinafter, fixed, etc.) are used not only when the members are directly fixed to each other, but also through other members. Including the case where it is fixed. That is, in the following description, the expression such as fixation includes the meaning of direct and indirect fixation between members.

(overall structure)
FIG. 1 shows a schematic configuration of a motor 1 (rotary electric machine) according to an embodiment of the present invention. The motor 1 includes a stator unit 2 and a rotor 3. The rotor 3 rotates about the central axis P with respect to the stator unit 2. The rotor 3 has a shaft 4 and rotates about a central axis P of the shaft 4. Since the configurations of the rotor 3 and the shaft 4 are the same as those of a general rotor and shaft, detailed description of the rotor 3 and the shaft 4 will be omitted. In the present embodiment, the motor 1 is a so-called inner rotor type motor in which the rotor 3 is rotatably located about the central axis P in the tubular stator 20.

The stator unit 2 has a stator 20 and a terminal structure 50.

The stator 20 has a stator core having a plurality of teeth and a plurality of coils 26 wound around the plurality of teeth. The portions of the plurality of coils 26 protruding toward one end side in the axial direction and the other end side in the axial direction of the stator core constitute the coil end portion 27. The coil end portion 27 includes a coil end portion 26a which is a winding start end portion and a winding end end portion of the coil 26.

The tip end portion of the coil end portion 26a of the coil 26 is a lead wire 51 forming a part of the terminal structure 50 described later. By electrically connecting the power supply 10 to the terminal structure 50, power is supplied to the plurality of coils 26. Since the configuration of the stator 20 is the same as that of a general stator, detailed description of the stator 20 will be omitted.

(Terminal structure)
The terminal structure 50 is located at the end of a plurality of coils 26 included in the stator 20. FIG. 2 is a perspective view showing a schematic configuration of the terminal structure 50. FIG. 3 is a sectional view taken along line III-III of FIG. As shown in FIGS. 2 and 3, the terminal structure 50 includes a plurality of conducting wires 51, terminals 52, connecting members 60, and conductive members 70. As described above, the plurality of lead wires 51 are the tip portions of the coil 26 of the stator 20 at the coil end portion 26a.

The lead wire 51 is a round wire having a substantially circular cross-sectional shape. As shown in FIG. 4, the lead wire 51 has a core wire 51a and an insulating portion 51b. The core wire 51a is a conductor through which an electric current flows, and is made of, for example, copper. The insulating portion 51b is made of an insulating material. The insulating material is, for example, enamel. The insulating portion 51b covers the outer peripheral surface of the core wire 51a, but does not cover the end surface 51c of the core wire 51a. As a result, the end face 51c of the core wire 51a is exposed.

The terminal 52 is made of a conductive material. For example, the terminal 52 is made of copper, and the entire surface is tin-plated. As shown in FIG. 5, the terminal 52 has a flat plate-shaped connecting terminal portion 54 and a tubular accommodating portion 56 extending in the axial direction. The connection terminal portion 54 is connected to the accommodating portion 56 in the axial direction. The connection terminal portion 54 and the accommodating portion 56 are made of a single member.

An external device is connected to the connection terminal portion 54. The connection terminal portion 54 has a mounting hole 54a that penetrates the connection terminal portion 54 in the thickness direction. Although not particularly shown, the terminal 52 and the external device are electrically connected by fixing the fastening member in a state where the fastening member is passed through the mounting hole 54a of the connection terminal portion 54 and the mounting hole of the connection terminal of the power supply 10. Can be connected to. In the present embodiment, the terminal 52 and the power supply 10 are electrically connected by connecting the connection terminal of the power supply 10 to the connection terminal portion 54.

A plurality of lead wires 51 are connected to the accommodating portion 56. The accommodating portion 56 has a tubular shape as a whole. The accommodating portion 56 has an accommodating space S partitioned by a tubular wall. The accommodating portion 56 opens toward the side where the mounting hole 54a is located and the opposite side. Hereinafter, in the accommodating portion 56, the opening end portion on the mounting hole 54a side is referred to as the connection terminal side end portion 56c, and the opening end portion on the opposite side is referred to as the lead wire side end portion 56d.

As described above, the terminal 52 has a tubular accommodating portion 56 that accommodates a plurality of conducting wires 51 in a bundled state. As a result, a plurality of lead wires 51 can be accommodated in the accommodating portion 56 of the terminal 52 in a bundled state. Therefore, although the details will be described later, the plurality of lead wires 51 and the terminals 52 can be easily connected.

The tips of the plurality of conducting wires 51 are inserted into the accommodating portion 56 from the end portion 56d on the conducting wire side, and are bundled in the accommodating portion 56. FIG. 6 is a sectional view taken along line VI-VI of FIG. As shown in FIG. 6, each of the plurality of conducting wires 51 located in the accommodating portion 56 has an insulating portion 51b on the outer peripheral surface of the core wire 51a. That is, the outer peripheral surface of the core wire 51a is not exposed. Therefore, the plurality of conducting wires 51 and the conducting wires 51 and the accommodating portion 56 are electrically insulated from each other.

As described above, the lead wire 51 has a substantially circular cross-sectional shape. Therefore, in the accommodating portion 56, there is a gap along the axial direction between one of the plurality of lead wires 51 and the lead wire adjacent to the lead wire. Further, in the accommodating portion 56, there is also a gap along the axial direction between the plurality of conducting wires 51 and the accommodating portion 56.

The tips of the plurality of lead wires 51 are located at the lead wire attachment positions P in the accommodating portion 56. That is, the storage space S of the storage portion 56 includes a region R in which a plurality of lead wires 51 are not located between the lead wire mounting position P and the connection terminal side end portion 56c. The connecting member 60 and the conductive member 70 are located in this region R. In the present embodiment, the tips of the plurality of lead wires 51 are all located at the lead wire mounting positions P, but some of the lead wires 51 among the plurality of lead wires 51 are end portions on the connection terminal side of the lead wire mounting position P. It may be located on the 56c side or the 56d side of the lead wire side end.

The connecting member 60 is solder. The solder, which is the connecting member 60, is located on the end faces 51c of the plurality of conducting wires 51 with the core wires 51a exposed. By the connecting member 60, a plurality of conducting wires 51 are fixed to each other on the tip end side thereof. Further, the solder, which is the connecting member 60 located on the end faces 51c of the plurality of conducting wires 51, comes into contact with the inner surface of the accommodating portion 56, thereby fixing the plurality of conducting wires 51 to the accommodating portion 56.

Further, the solder, which is the connecting member 60, electrically connects the core wire 51a exposed by the end faces 51c of the plurality of conducting wires 51 and the terminal 52. That is, by locating the solder as described above, the plurality of conducting wires 51 and the terminals 52 are electrically connected via the connecting member 60.

The conductive member 70 is a disk-shaped copper member having a size that can be stored in the region R. In the present embodiment, the conductive member 70 is located in the region R at a position facing the end faces 51c of the plurality of conducting wires 51 and not in direct contact with the plurality of conducting wires 51 and the accommodating portion 56. Then, the solder, which is the connecting member 60, is between the conductive member 70 and the end surface 51c of the core wire 51a of the plurality of conducting wires 51, and between the conductive member 70 and the inner surface of the accommodating portion 56 on the connection terminal side end portion 56c side. Is located in. As a result, the plurality of conducting wires 51 and the terminals 52 are electrically connected via the connecting member 60 and the conductive member 70.

With the above configuration, the plurality of conducting wires 51 and the terminals 52 are electrically connected via the connecting member 60 and electrically connected via the connecting member 60 and the conductive member 70.

The core wires 51a of the plurality of conducting wires 51 may be in contact with the conductive member 70. Further, the conductive member 70 may be in contact with the terminal 52.

In this way, using the solder that is the connecting member 60, the end faces 51c of the core wires 51a in the plurality of conducting wires 51 and the conductive member 70 are soldered, and the terminals 52 and the conductive member 70 are soldered to a plurality of pieces. The conducting wire 51 can be fixed to the terminal 52, and the core wires 51a of the plurality of conducting wires 51 and the terminal 52 can be electrically connected. The solder enters the gaps between the plurality of lead wires 51 and the gaps between the plurality of lead wires 51 and the terminals 52, respectively. Therefore, by using solder as the connecting member 60, the plurality of conducting wires 51 can be easily fixed to the terminals 52, and the core wires 51a and the terminals 52 of the plurality of conducting wires 51 can be electrically connected.

Further, the end surface 51c of the core wire 51a in the plurality of lead wires 51 is fixed to the accommodating portion 56 and electrically connected to the terminal 52 by the connecting member 60 in a state where the plurality of conductor wires 51 are accommodated in the accommodating portion 56. To. In this way, the accommodating portion 56 can be used to bundle the tips of the plurality of conducting wires 51, and the accommodating portion 56 can be used to easily connect the plurality of conducting wires 51 and the terminals 52 by soldering.

In the present embodiment, the terminal structure 50 further includes a conductive member 70 connected to the end faces 51c of the plurality of conducting wires 51 and the accommodating portion 56 of the terminal 52 via the connecting member 60. Then, the connecting member 60 electrically connects the core wire 51a of the plurality of conductors 51 and the accommodating portion 56 of the terminal 52, and connects the core wire 51a of the plurality of conductors 51 and the accommodating portion 56 of the terminal 52 via the conductive member 70. Electrically connect.

Although the details will be described later, it is also possible to connect the plurality of conducting wires 51 and the terminals 52 by using only solder without using the conductive member 70. That is, the plurality of conductors 51 and the terminals 52 can be connected by solder by pouring the molten solder into the region R with the plurality of conductors 51 inserted into the accommodating portion 56.

However, when the solder is poured into the region R, the solder adheres to the inner surface of the accommodating portion 56 due to surface tension. Therefore, a solder layer having a sufficient thickness for passing a current between the plurality of conducting wires 51 and the terminals 52 may not be obtained on the end surface 51c of the core wire 51a.

On the other hand, the conductive member 70 is fixed at a position facing the end faces 51c of the plurality of conducting wires 51 via the connecting member 60, so that the area of the portion where the current flows from the plurality of conducting wires 51 to the terminal 52 (energization area). Can be increased. As a result, the plurality of conducting wires 51 and the terminals 52 can be more reliably and electrically connected.

In the terminal structure 50, the accommodating portion 56 is not plastically deformed. That is, the plurality of conducting wires 51 are not fixed to the accommodating portion 56 by caulking. In the present embodiment, since the accommodating portion 56 is not plastically deformed, the shape of the accommodating portion is, for example, a cylindrical shape or an elliptical tubular shape. As described above, even if the accommodating portion 56 is not plastically deformed, that is, even if the accommodating portion 56 of the terminal 52 is not crimped to the plurality of conducting wires 51, the plurality of conducting wires 51 can be connected to the terminals 52 by the above configuration. The core wires 51a of the plurality of lead wires 51 and the terminals 52 can be electrically connected to each other.

The stator unit 2 according to the present embodiment is located at the tip of the stator 20 having the coil 26 and the coil end portion 26a of the coil 26, and is an insulating portion made of an insulating material covering the core wire 51a and the outer peripheral surface of the core wire 51a. It has a plurality of conducting wires 51 having 51b, a terminal 52 connected to the plurality of conducting wires 51, and a conductive connecting member 60. The core wire 51a has an end face that is not covered by the insulating portion 51b. By connecting the connecting member 60 to the end surface 51c of the core wire 51a and connecting to the terminal 52, the plurality of lead wires 51 are fixed to the terminal 52, and the core wire 51a and the terminal 52 of the plurality of lead wires 51 are electrically connected. Connecting.

When the conductive connecting member 60 comes into contact with the end faces 51c of the core wires 51a of the plurality of conductors 51 and the terminals 52, the plurality of conductors 51 can be fixed to the terminals 52, and the plurality of conductors 51 and the terminals 52 can be fixed to each other. Can be connected electrically. Therefore, when the stator unit 2 is manufactured, the step of removing the insulating portion 51b is not required, so that the stator unit 2 can be easily manufactured. Further, since it is not necessary to melt and remove the insulating portion 51b, the stator unit 2 can be manufactured without generating gas. This makes it possible to provide a stator unit 2 that can be easily manufactured and that a plurality of lead wires 51 can be fixed to the terminals 52 without generating gas.

Further, the motor 1 according to the present embodiment has a stator unit 2 having the above configuration. Thereby, it is possible to provide the motor 1 having the stator unit 2 that can be easily manufactured while suppressing the generation of gas.

(Manufacturing method of stator unit)
Next, a method of manufacturing the stator unit 2 will be described. The method for manufacturing the stator unit 2 includes a stator manufacturing step, a lead wire arranging step, and a lead wire connecting step.

In the stator manufacturing step, first, a plurality of punched steel plates are laminated to manufacture a stator core of the stator 20. Next, the coil 26 is wound around the teeth of the stator core, and the tip end portion of the coil end portion 26a of the coil 26 is pulled out to one end side of the stator core.

In the lead wire arranging step, the tips of the plurality of lead wires 51, which are the tip portions of the coil end portion 26a, are arranged in the accommodating portion 56 of the terminal 52. Specifically, the tips of the plurality of lead wires 51 are inserted into the terminal 52 from the lead wire side end portion 56d side of the accommodating portion 56, and the tips of the plurality of lead wires 51 are inserted from the accommodating portion 56, that is, the connection terminal side end portion 56c. Place it in a position that does not protrude outside. At this time, the outer peripheral surface of the core wire 51a of the plurality of lead wires 51 is covered with the insulating portion 51b, and the end surface 51c of the core wire 51a is exposed without being covered by the insulating portion 51b. Further, the accommodating portion 56 has a region R on the connection terminal side end portion 56c side where a plurality of conducting wires 51 are not located.

In the conductor connecting step, first, the conductive member 70 is inserted into the region R. After that, solder, which is a connecting member 60, is poured from the connection terminal side end 56c side of the accommodating portion 56, and the tips of the plurality of conducting wires, the conductive member 70, and the inner surface side of the accommodating portion 56 on the connection terminal side end 56c side. And the conductive member 70 are soldered.

Through the above steps, it is possible to manufacture the stator unit 2 having the terminal structure 50 in which the plurality of lead wires 51 are fixed to the terminals 52 and the core wires 51a of the plurality of lead wires 51 and the terminals 52 are electrically connected.

According to this manufacturing method, the step of crimping the terminal 52 to the plurality of conducting wires 51 is unnecessary. Further, it is not necessary to melt and remove the insulating portion 51b that covers the outer peripheral surface of the conducting wire 51, or to peel off the insulating portion 51b in advance.

That is, in the method of manufacturing the stator unit 2 according to the present embodiment, the insulating portion 51b is located at the tip end portion of the coil end portion 26a of the coil 26 of the stator 20 and is made of an insulating material that covers the core wire 51a and the outer peripheral surfaces of the core wire 51a. The lead wire arranging step of arranging the tips of the plurality of lead wires 51 having the above at the lead wire mounting position P of the terminal 52, and the solder is poured into the lead wire mounting position P and covered with the solder by the insulating portion 51b of the plurality of lead wires 51. It has a wire connection step of connecting the end surface 51c of the core wire 51a that is exposed without being exposed and the terminal 52, and fixing the plurality of wire 51 to the terminal 52 by the solder.

In this way, the plurality of lead wires 51 can be fixed to the terminals 52 by soldering, and the core wires 51a of the plurality of lead wires 51 and the terminals 52 can be electrically connected. Therefore, in order to remove the insulating portion 51b that covers the outer peripheral surface of the core wire 51a, it is not necessary to melt and remove the insulating portion 51b or peel off the insulating portion 51b in advance. As a result, the stator unit can be easily manufactured without generating harmful gas.

Further, in the above manufacturing method, the terminal 52 has a tubular accommodating portion 56. In the lead wire arranging step, the tips of the plurality of lead wires 51 are inserted into the accommodating portion 56 and are located on the connection terminal side end portion 56c side of the accommodating portion 56 which is the lead wire mounting position P. In the conductor connecting step, the conductive member 70 is arranged at a position facing the end faces of the core wires 51a in the plurality of conductors 51 and covering the connection terminal side end 56c of the accommodating portion 56, and the core wire 51a at the conductor mounting position P. Solder is poured between the end face and the conductive member 70, and between the accommodating portion 56 and the conductive member 70, and the end face of the core wire 51a, the accommodating portion 56, and the conductive member 70 are connected by the solder, and the solder is used. The conductive member 70 is fixed to the plurality of conducting wires 51 and the accommodating portion 56.

In this way, by connecting the plurality of conducting wires 51 and the accommodating portion 56 with solder using the accommodating portion 56 of the terminal 52, the plurality of conducting wires 51 can be easily fixed to the terminal 52, and the plurality of conducting wires 51 can be easily fixed. The core wire 51a and the terminal 52 can be easily electrically connected. Moreover, by soldering the end face of the core wire 51a and the conductive member 70 of the plurality of conductors 51, and the end portion 56c side of the connection terminal side of the accommodating portion 56 and the conductive member 70, the plurality of conductors 51 to the terminal 52 The area of the portion where the current flows (energization area) can be increased. As a result, the plurality of conducting wires 51 and the terminals 52 can be more reliably and electrically connected.

(Other embodiments)
Although the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the embodiment is not limited to the above-described embodiment, and the above-described embodiment can be appropriately modified and implemented within a range that does not deviate from the gist thereof.

In the above embodiment, the terminal structure 50 has a conductive member 70 in the region R. However, as shown in FIG. 7, the terminal structure may be a terminal structure 150 having no conductive member in the region R.

The terminal structure 150 has a plurality of conducting wires 51, terminals 52, and a connecting member 60. The plurality of conducting wires 51 and the accommodating portion 56 of the terminal 52 are connected by solder, which is a connecting member 60. That is, the plurality of lead wires 51 are fixed to the terminal 52 by solder and electrically connected at the lead wire attachment position P on the connection terminal side end portion 56c side of the accommodating portion 56.

Specifically, the solder, which is the connecting member 60, is located on the end faces 51c of the plurality of conductors 51 with the core wires 51a exposed, so that the plurality of conductors 51 are fixed to each other on the tip side thereof. Further, the solder, which is the connecting member 60 located on the end faces 51c of the plurality of conducting wires 51, comes into contact with the inner surface of the accommodating portion 56, thereby fixing the plurality of conducting wires 51 to the accommodating portion 56.

Further, the solder, which is the connecting member 60, electrically connects the core wire 51a exposed by the end faces 51c of the plurality of conducting wires 51 and the terminal 52. That is, by locating the solder as described above, the plurality of conducting wires 51 and the terminals 52 are electrically connected.

As described above, in the terminal structure 150, the conductive connecting member 60 is connected to the core wire 51a of the plurality of conducting wires 51, and by connecting to the terminal 52, the plurality of conducting wires 51 can be fixed to the terminal 52, and the plurality of conducting wires 51 can be fixed to the terminal 52. The core wire 51a of the plurality of conducting wires 51 and the terminal 52 can be electrically connected.

The terminal structure 150 can be manufactured by pouring solder, which is a connecting member 60, into the region R without inserting the conductive member 70 into the region R in the lead wire connecting step in the method for manufacturing the stator unit. it can.

In the above embodiment, the terminal structure 50 has a connecting member 60 connected to the end faces 51c of all the core wires 51a in the plurality of conducting wires 51. However, as shown in FIG. 8, the terminal structure 250 may be a terminal structure 250 having a connecting member 60 that is not connected to the end surface 51c of a part of the core wires 51a in the plurality of conducting wires 51.

The terminal structure 250 has a plurality of conducting wires 51, terminals 52, connecting members 60, and conductive members 70. The conductive member 70 is located in the region R at a position where it directly contacts the end faces 51c of the core wires 51a in the plurality of conducting wires 51, and the solder as the connecting member 60 is the inner surface of the accommodating portion 56 in the conductive member 70 and the terminal 52. It is located between and. As a result, the plurality of lead wires 51 can be fixed to the accommodating portion 56.

Further, either the conductive member 70 or the connecting member 60 is connected to the end surface 51c of the core wire 51a in the plurality of conducting wires 51, and the conductive member 70 and the connecting member 60 are connected to each other. As a result, the core wires 51a of the plurality of lead wires 51 and the accommodating portion 56 to which the connecting member 60 is connected can be electrically connected.

In this way, in the terminal structure 250, the conductive member 70 or the connecting member 60 is connected to the end faces of the core wires 51a in the plurality of conducting wires 51 and is connected to the terminals 52, so that the plurality of conducting wires 51 can be fixed to the terminals 52. , The core wire 51a of the plurality of conducting wires 51 and the terminal 52 can be electrically connected.

In the above embodiment, the terminal 52 included in the terminal structures 50, 150, 250 has a tubular accommodating portion 56. However, the terminals may be terminals 352 and 452 having a plurality of wall portions and having accommodating portions 356 and 456 for accommodating the plurality of conducting wires in a bundled state between the plurality of wall portions.

For example, as shown in FIG. 9, the terminal 352 may have a U-shaped accommodating portion 356 when viewed in the axial direction. That is, the terminal 352 included in the terminal structure 350 is a pair of a wall portion 356a which is a single member of the connection terminal portion 54 and a pair extending in the thickness direction with respect to the wall portion 356a when the terminal 352 is viewed in the axial direction. It has a wall portion 356b. The wall portion 356a and the pair of wall portions 356b are made of a single member.

The terminal structure 350 includes a plurality of conducting wires 51, a terminal 352 having an accommodating portion 356, and a connecting member 60. The plurality of conducting wires 51 and the accommodating portion 356 are connected by solder, which is a connecting member 60. The terminal structure 350 may have a structure having a conductive member 70, or may have a structure not having a conductive member 70.

Further, as shown in FIG. 10, the terminal 452 may have an L-shaped accommodating portion 456 when viewed in the axial direction. That is, the terminal 452 of the terminal structure 450 has a wall portion 456a that is a single member of the connection terminal portion 54, and one terminal 452 that extends in the thickness direction with respect to the wall portion 456a when viewed in the axial direction. It has a wall portion 456b. The wall portion 456a and the wall portion 456b are composed of a single member.

The terminal structure 450 has a plurality of lead wires 51, terminals 452, and a connecting member 60. The plurality of conducting wires 51 and the accommodating portion 456 are connected by solder, which is a connecting member 60. The terminal structure 450 may have a structure having a conductive member 70, or may have a structure not having a conductive member 70.

In the terminal structures 350 and 450, similarly to the terminal structures 50, 150 and 250, the accommodating portions 356 and 456 can be stored in a state in which a plurality of conducting wires 51 are bundled. Since the plurality of lead wires 51 are bundled in this way, the plurality of lead wires 51 and the terminals 352 and 452 can be easily connected by the connecting member 60.

In the above embodiment, the terminal structures 50, 150, 250, 350, 450 are terminal structures for connecting the stator 20 and the power supply 10. However, the terminal structure may be a terminal structure for connecting the stator and a device other than the power supply.

In the above embodiment, the lead wire mounting position P in which the tips of the plurality of lead wires 51 are arranged is located in the accommodating portions 56, 356, and 456. However, the wire mounting position where the tips of the plurality of wires are arranged may be located outside the accommodating portion.

In the above embodiment, the terminals 52, 352, and 452 have accommodating portions 56, 356, and 456 that store the plurality of conducting wires 51 in a bundled state. However, the terminal may have a configuration that does not have an accommodating portion for bundling a plurality of conducting wires. Also in this case, the connecting member connects the end faces of the core wires of the plurality of conducting wires and the conducting wire terminal portions, thereby fixing the plurality of conducting wires to the terminals and electrically connecting the plurality of conducting wires and the terminals. Can be connected to.

In the above embodiment, a part of the accommodating portion 56 and the wall portions 356a, 356b, 456a, 456b in the accommodating portion 356, 456 are flat plates. However, the flat plate-shaped portion of the accommodating portion may have an arc shape or the like protruding outward from the accommodating portion when the accommodating portion is viewed from the opening side of the accommodating portion.

In the above embodiment, the connecting member 60 is solder. However, the connecting member does not have to be solder as long as it is a conductive member capable of joining, adhering, or welding conductive members to each other.

In the above embodiment, the conductive member 70 is a disk-shaped copper member. However, the conductive member does not have to be made of copper as long as it is a conductive member. Further, the conductive member does not have to be disk-shaped as long as it can be stored in the region R.

In the above embodiment, the conductive member 70 is located in the region R. However, if the conductive member is fixed to the end faces and terminals of the plurality of conducting wires via the connecting member and the core wires and terminals of the plurality of conducting wires can be electrically connected, the end portion on the connection terminal side of the accommodating portion can be connected. It may be located in a covering position. In this case, the conductive member may have a shape that fits in the above position.

In the above embodiment, the stator unit 2 included in the motor 1 has been described, but the stator unit may be used for a rotary electric machine other than the motor.

The present invention is applicable to a stator unit having terminals for electrically connecting a plurality of conducting wires covered with an insulating portion to other equipment or the like.

1 Motor (rotary machine)
2 Stator unit 3 Rotor 50, 150, 250, 350, 450 Terminal structure 51 Conductor 51a Core wire 51b Insulation 52, 352, 452 Terminal 54 Connection terminal 56, 356, 456 Accommodation 56c Connection terminal side End 56d Conductor side End 60 Connecting member 70 Conductive member

Claims (10)

A stator with a coil and
A plurality of conductors located at the tip of the coil end of the coil and having a core wire and an insulating portion made of an insulating material covering the outer peripheral surface of the core wire.
The terminals connected to the plurality of conducting wires and
With conductive connecting members
Have,
The core wire has an end face that is exposed without being covered by the insulating portion.
By connecting the connecting member to the end face of the core wire and connecting to the terminal, the plurality of conductors are fixed to the terminal, and the core wire of the plurality of conductors and the terminal are electrically connected. ,
Stator unit. In the stator unit according to claim 1,
The terminal is
It has a plurality of wall portions and has an accommodating portion for accommodating the plurality of conducting wires in a bundled state between the plurality of wall portions.
Stator unit. In the stator unit according to claim 1,
The terminal is
It has a tubular accommodating portion for accommodating the plurality of conducting wires in a bundled state.
Stator unit. In the stator unit according to claim 2 or 3.
The end faces of the core wires in the plurality of conductors are fixed to the accommodation and electrically connected to the terminals by the connecting member in a state where the plurality of wires are accommodated in the accommodation.
Stator unit. In the stator unit according to any one of claims 2 to 4.
Further having a conductive member connected to the end faces of the plurality of conducting wires and the accommodating portion of the terminal via the connecting member.
The connecting member electrically connects the core wire of the plurality of conductors and the accommodating portion of the terminal, and electrically connects the core wire of the plurality of conductors and the accommodating portion of the terminal via the conductive member. Connect to
Stator unit. In the stator unit according to any one of claims 2 to 5,
The housing is not plastically deformed,
Stator unit. In the stator unit according to any one of claims 1 to 6.
The connecting member is solder.
Stator unit. A rotary electric machine having the stator unit according to any one of claims 1 to 7. A wire arrangement in which the tips of a plurality of conductors located at the tip of the coil end of the stator coil and having a core wire and an insulating portion made of an insulating material covering the outer peripheral surface of the core wire are arranged at a terminal wire mounting position. Process and
Solder is poured into the lead wire mounting position, the end face of the core wire exposed without being covered by the insulating portion of the plurality of lead wires is connected to the terminal, and the plurality of lead wires are connected by the solder. The wire connection process to fix to the terminal and
A method for manufacturing a stator unit. The method for manufacturing a stator unit according to claim 9.
The terminal has a tubular accommodating portion.
In the lead wire arrangement process,
The tips of the plurality of lead wires are inserted into the accommodating portion and are located on the opening side of the accommodating portion, which is the lead wire mounting position.
In the lead wire connecting step,
In a state where the conductive member is arranged at a position facing the end surface of the core wire in the plurality of conductor wires and covering the opening of the accommodating portion, between the end surface of the core wire and the conductive member at the conductor mounting position, and the said Solder is poured between the accommodating portion and the conductive member, the end face of the core wire, the accommodating portion, and the conductive member are connected by the solder, and the conductive member is connected to the plurality of conducting wires and the accommodating portion by the solder. Fixed to
Manufacturing method of the stator unit.

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