Rotating electric machines

Abstract

A rotating electric machine has a structure in which a main circuit connector outside a frame is directly connected to a terminal board without using a lead wire. The rotating electric machine (1) comprises: a rotor (3) and a stator (2); a terminal board (100) for connecting a winding end (7a) of the stator in a predetermined connection pattern; a frame (4) extending in the axial direction; a load-opposite side bracket (13) fixed to the load-opposite side of the frame; and a main circuit connector (300) engaged with an opening portion of the load-opposite side bracket arranged radially outward, wherein the stator and the terminal board are fixed to the frame. The rotating electric machine comprises: a connection terminal mounted on an end portion of the terminal board on the load-opposite side; a connection pin protruding radially outward from the connection terminal and conducting with the connection terminal; and a direct connection connector arranged in conduction with the main circuit connector, accommodating the connection pin when the main circuit connector is engaged with the opening portion and conducting with the connection pin.

Description

Technical Field

[0001] The disclosed embodiments relate to rotating electrical machines. Background Art

[0002] Patent Document 1 discloses a motor in which a terminal block is connected to a socket provided outside a frame by lead wires.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2010-233436

[0006] When connecting the terminal block to the main circuit connector outside the frame with lead wires, there is room for improvement in reliably preventing miswiring of the lead wires and the main circuit connector and withstand voltage failure caused by contact between the lead wires and the rotor. Summary of the Invention

[0007] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a rotating electrical machine having a structure capable of directly connecting a main circuit connector outside a frame and a terminal block without using lead wires.

[0008] In order to solve the above-mentioned problems, according to one aspect of the present invention, a rotating electric machine is applied, which comprises: a rotor and a stator; a terminal block, which connects the ends of the windings of the stator in a prescribed wiring pattern; a frame, which extends in the axial direction; a bracket, which is fixed to one side of the axial direction of the frame; and a main circuit connector, which engages with an opening portion of the bracket arranged toward the radial outside, and the stator and the terminal block are fixed to the frame, wherein the rotating electric machine comprises: a connecting terminal, which is mounted on the end of one side of the axial direction of the terminal block; a connecting pin, which protrudes from the connecting terminal toward the radial outside and is conductively connected to the connecting terminal; and a direct connection connector, which is arranged in a manner conductively connected to the main circuit connector, and when the main circuit connector is engaged with the opening portion, the connecting pin is accommodated and conductively connected to the connecting pin.

[0009] Effects of the Invention

[0010] According to the present invention, a main circuit connector outside the frame and the terminal block can be directly connected without using lead wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a longitudinal sectional view showing the overall structure of a rotating electrical machine according to one embodiment.

[0012] Figure 2 yes Figure 1Cross-sectional view of section II-II.

[0013] Figure 3 is extracted Figure 1 A schematic cross-sectional view showing a stator and a frame integrated by resin molding.

[0014] Figure 4 yes Figure 3 An enlarged cross-sectional view of the main parts.

[0015] Figure 5 This is a diagram showing the detailed structure of the wiring board as viewed from the side opposite to the load.

[0016] Figure 6 This figure shows the detailed structure of a connection substrate fixed to a frame by resin molding, and connection terminals and connection pins fixed to the connection substrate as viewed from the opposite side to the load.

[0017] Figure 7 yes Figure 6 Enlarged view of the main part.

[0018] Figure 8 It is from Figure 7 The structure shown is a diagram in which the resin mold portion is omitted.

[0019] Figure 9 1 and 2 are a diagram and a plan view showing the detailed structure of the connection terminal as viewed from the side opposite to the load.

[0020] Figure 10 These are an external perspective view, a plan view, a view viewed from the opposite side to the load, and a longitudinal sectional view viewed from the opposite side to the load, showing the detailed structure of the elastic member.

[0021] Figure 11 This is a side view showing the external structure of the connector body.

[0022] Figure 12 This is a diagram showing the operation of housing the connection pins of the connection terminals in the direct connection connector when the main circuit connector is mounted in the opening, as viewed from the opposite side to the load.

[0023] Figure 13 This is a diagram showing the operation of positioning the connection terminal using a tool, as viewed from the side opposite to the load side.

[0024] Figure 14 yes Figure 13 Longitudinal sectional view of section YY in FIG.

[0025] Figure 15 This is a conceptual side sectional view for explaining the positioning operation of the mold used in resin molding.

[0026] Label Description

[0027] 1 Rotating motor

[0028] 2 stator

[0029] 3 rotors

[0030] 4 frames

[0031] 4b abutting end surface (second abutting surface)

[0032] 7 stator winding

[0033] 7a Winding end

[0034] 13 Load opposite side bracket (bracket)

[0035] 13A opening

[0036] 15 Resin molding part

[0037] 100 terminal block (terminal board)

[0038] 200 connection terminals

[0039] 200A~200C step part

[0040] 200e abutting end surface (first abutting surface)

[0041] 250 connection pins

[0042] 270 elastic components

[0043] 270a~270c protrusions

[0044] 275a~275c through holes

[0045] 300 main circuit connector

[0046] 400 direct connection connector

[0047] 500 reference hole

[0048] DI molding mold DETAILED DESCRIPTION

[0049] Hereinafter, one embodiment will be described with reference to the accompanying drawings. Detailed descriptions of parts not relevant to the essence of the disclosed embodiment will be appropriately omitted.

[0050] <Overall Structure of a Rotating Electric Machine>

[0051] use Figure 1 、 Figure 2 、 Figure 3 、 Figure 4, the overall structure of the rotary electric machine 1 of this embodiment is described. In the following description, "upper side", "lower side", "load side", "load opposite side" and Figure 1 The direction of the arrows in the table corresponds to the direction of the arrows in the table. Figure 1 and Figure 2 In this example, the rotating electrical machine 1 is a three-phase AC motor. Specifically, the rotating electrical machine 1 includes a stator 2, a rotor 3, and an axially extending frame 4. The rotor 3 is fixed to the outer peripheral surface of a rotating shaft 10 having an axis k.

[0052] The stator 2 is provided on the inner peripheral surface of the frame 4. The stator 2 has a plurality of laminated iron core bodies 5 (see Figure 3 、 Figure 4 ); a plurality of coil bobbins 6 are respectively inserted through a plurality of laminated iron core bodies 5; and a plurality of stator windings 7 are respectively wound on the plurality of coil bobbins 6. On the load opposite side of the frame 4 (one example of the axial side, Figure 1 、 Figure 3 、 Figure 4 The load-opposite side bracket 13 (an example of a bracket) is fixed on the load side of the frame ( Figure 1 、 Figure 3 、 Figure 4 A load-side bracket 11 is fixed (center right).

[0053] In order to electrically insulate the laminated iron core 5 from the stator winding 7, each coil bobbin 6 is made of an insulating material such as resin. An annular connection base plate 100 (an example of a connection plate) is provided on the opposite side of the load of the plurality of coil bobbins 6. The connection base plate 100 connects the end portions 7a of the plurality of stator windings 7 (hereinafter referred to as "winding end portions 7a" as appropriate). Figure 4 (b)) is connected in a predetermined connection pattern. The winding end 7a is connected by solder H (also refer to the following Figure 5 ) is fixed to the connection substrate 100. The entire stator 2 including the stator winding 7 and the connection substrate 100 are integrally covered by a resin mold portion 15 (hatching is omitted to avoid complexity in the drawings) and fixed to the frame 4 by the resin mold portion 15.

[0054] The rotor 3 is disposed radially inwardly opposite the stator 2 and includes a yoke 8 and permanent magnets 9. A rotating shaft 10 is rotatably supported by a load-side bearing 12 whose outer ring is fitted with a load-side bracket 11, and an opposite-load-side bearing 14 whose outer ring is fitted with an opposite-load-side bracket 13.

[0055] <Connection Base Plate>

[0056] like Figure 5As shown, the wiring substrate 100 has: a plurality of (in this case, four) conductive components 110a to 110d in the shape of multiple arcs (or rings) connected to the above-mentioned winding ends of the stator 2 and arranged in a concentric circle; and a roughly annular insulating component 120 covering at least a portion of the surface of these conductive components 110a to 110d.

[0057] <Conductive Parts>

[0058] exist Figure 5 In the embodiment, conductive members 110a to 110d are arranged in a radially quadrupled configuration in a substantially concentric pattern, with conductive member 110a, conductive member 110b, conductive member 110c, and conductive member 110d arranged in this order from radially outward to radially inward. Hereinafter, these conductive members 110a to 110d will be collectively referred to as "conductive member 110" as appropriate.

[0059] The outermost conductive component 110a is provided with a support hole 230b for inserting and installing the support leg 200b of the connecting terminal 200 described later, and the second conductive component 110b from the outside is provided with support holes 230a and 230c for inserting and installing the support legs 200a and 200c of the connecting terminal 200 described later.

[0060] In this example, each conductive member 110 is formed by, for example, forming a single wire material, a coated rectangular wire, into a spiral shape, and then cutting and chipping a predetermined portion (see the end portion 114 formed by the chipping). In this case, a through hole 110p (see the through hole 110p) for the winding end portion 7a to pass through in the direction of the rotation axis is provided at approximately the center position in the width direction of both ends of the conductive member 110 in the longitudinal direction (see the through hole 110p). Figure 4 (b) The winding end portion 7a passing through the through hole 110p is fixed to the surface of the conductive member 110 on the opposite side to the load by solder H.

[0061] <Insulation Parts>

[0062] The insulating member 120 is an annular member formed by insert molding of a resin material, for example, and fixes the conductive members 110 at predetermined positions so that they are on the same plane substantially perpendicular to the rotation axis direction and ensures insulation between the conductive members 110 .

[0063] The insulating component 120 is provided with protrusions 124a to 124j for resin fixing, which protrude toward the resin molded portion 15 on one axial side (the side opposite to the load) at multiple locations (ten locations in this example). Hereinafter, the protrusions 124a to 124j will be simply and collectively referred to as "protrusions 124" as appropriate. At least one of the protrusions 124 at the multiple locations is integrally provided with a bundling portion 125. The bundling portion 125 is provided radially from the inner circumference of the insulating component 120 to the outer circumference in a manner that bundles the multiple conductive components 110 arranged side by side in the radial direction. The insulating component 120 covers the surface of the conductive component 110 on the side opposite to the load in the portions of the protrusions 124 and the bundling portion 125, but leaves the surface of the conductive component 110 on the side opposite to the load exposed in the portions other than the protrusions 124 and the bundling portion 125.

[0064] In addition, in this example, the eight protrusions 124c to 124j, excluding the protrusions 124a and 124b, have a roughly conical shape with a flat surface at the top, which appears to be a roughly isosceles trapezoidal shape when viewed from the side. Most of the protrusions 124c to 124j are covered by the resin molded portion 15, and the flat surfaces of the tops of the protrusions 124c to 124j are exposed. The protrusions 124a and 124b are different from the protrusions 124c to 124j and are flat circular plate-shaped. The end 124A of the protrusions 124a and 124b on the opposite side of the load is not covered by the resin molded portion 15, but is exposed from the resin molded portion 15 (refer to the aforementioned Figure 4 (a)).

[0065] <Connection Terminals>

[0066] return Figure 1 、 Figure 2 、 Figure 3 A connection terminal 200 is mounted on the end of the wiring substrate 100 on the opposite side of the load. Radially outward from the connection terminal 200, a plurality of (three in this example) connection pins 250A to 250C are provided, electrically connected to the connection terminal 200. Hereinafter, the connection pins 250A to 250C will be collectively referred to as "connection pins 250," as appropriate.

[0067] Specifically, if Figure 6 and Figure 7 As shown, the connection terminal 200 has a plurality of (three in this example) supporting legs 200a, 200b, 200c (see later described) provided on its load side corresponding to the connection pins 250A, 250B, 250C. Figure 9) are inserted into the support holes 230a, 230b, and 230c of the conductive member 110 of the wiring substrate 100 and secured with solder (not shown). At this time, as described above, the resin mold 15 covering the wiring substrate 100 has openings 15A formed in the portion corresponding to the connection terminals 200. The connection terminals 200 are arranged so that at least the connection pins 250, along with the elastic member 270 (described later), are exposed from the openings 15A of the resin mold 15 toward the side opposite to the load.

[0068] <Connection Terminals and Connection Pins>

[0069] like Figure 8 as well as Figure 9 As shown, the connecting terminal 200 comprises a base portion 200d having a generally arcuate shape along the conductive member 110 of the wiring substrate 100 described above, and a plurality (three in this example) of stepped portions 200A, 200B, and 200C, which form a concave-convex shape that protrudes upward (in other words, radially outward) from the base portion 200d. In the illustrated example, the stepped portion 200B, located in the center of the figure, has the largest upward protrusion LB from the inner edge of the base portion 200d. The protrusion LA of the stepped portion 200A on the left side of the figure and the protrusion LC of the stepped portion 200C on the right side of the figure are smaller than the protrusion LB of the stepped portion 200B. As a result, these stepped portions 200A to 200C form the concave-convex shape described above, which is convex in the circumferential center and concave on both sides, facing the direct-connect connector 400 described later.

[0070] Furthermore, the connecting pins 250A to 250C are located on different stepped portions 200A to 200C. Specifically, connecting pin 250A is located on stepped portion 200A, connecting pin 250B is located on stepped portion 200B, and connecting pin 250C is located on stepped portion 200C. As a result, the tip of connecting pin 250B, located in the center of the figure, is located at the top, while the tips of connecting pins 250A, located on the left side of the figure, and 250C, located on the right side of the figure, are located below the tip of connecting pin 250B.

[0071] Furthermore, the arrangement areas of the three connecting pins 250A, 250B, and 250C in the connecting terminal 200 are configured to be asymmetrical on one side and the other side of the central plane in the circumferential direction. Figure 9 In the example shown, the central plane in the circumferential direction of the connection terminal 200 is a radial plane Xb passing through the center of the connection pin 250B (hereinafter appropriately referred to as the "central plane of the connection pin 250B". The same applies hereinafter). Figure 9 (a) and Figure 9As shown in (b), in this example, the above-mentioned concave and convex shapes formed by the step portions 200A, 200B, and 200C are different from each other on one circumferential side (the left side in the figure) and the other circumferential side (the right side in the figure) of the center plane Xb of the connecting pin 250B. In other words, they become asymmetric about the center plane of the connecting pin 250B.

[0072] Furthermore, in this example, the distance Lab between the center plane Xa of connecting pin 250A and the center plane Xb of connecting pin 250B is different from the distance Lbc between the center plane Xb of connecting pin 250B and the center plane Xc of connecting pin 250C. In other words, the connection pins 250A to 250C in connecting terminal 200 are arranged so that the connection pins are positioned asymmetrically with respect to the circumferential center plane, i.e., the center plane Xb of connecting pin 250B. The connection pins 250A are positioned on one side (the left side in the figure) of the center plane Xb, and the connection pins 250C are positioned on the other side (the right side in the figure).

[0073] Furthermore, at both circumferential ends of the base portion 200d of the connection terminal 200, positioning end surfaces 200p and 200q are provided in the vertical direction and in the aforementioned axial direction for positioning (described later). Furthermore, positioning end surfaces 200r and 200s are provided in the horizontal direction perpendicular to the vertical direction and in the aforementioned axial direction. These positioning end surfaces 200p, 200q, 200r, and 200s will be described later.

[0074] <Elastic Components>

[0075] On the upper portion of the connection terminal 200 of the above-described shape, an elastic member 270 made of rubber or the like in a substantially sheet-like shape is provided in a covering manner. Figure 10 As shown in (a) to (d) of FIG. 1 , the elastic member 270 includes a plurality of (three in this example) stepped portions 270A, 270B, and 270C corresponding to the plurality of (three in the above example) stepped portions 200A, 200B, and 200C of the aforementioned connecting terminal 200. These stepped portions 270A, 270B, and 270C have lower portions that generally mimic the upper portions of the respective stepped portions 200A, 200B, and 200C of the aforementioned connecting terminal 200. As a result, the elastic member 270 as a whole has a concave-convex shape, similar to the aforementioned connecting terminal 200, with the circumferential center protruding upward relative to the sides.

[0076] The step portion 270A includes a through hole 275a for the corresponding connecting pin 250A to pass through and a protrusion 270a provided corresponding to the through hole 275a. The protrusion 270a is provided on the outer peripheral side of the through hole 275a to protrude toward the radial outer side (in other words, the upper side) of the above-mentioned wiring substrate 100 (see Figure 7 ).

[0077] Similarly, the step portion 270B includes a through hole 275b through which the corresponding connecting pin 250B passes, and a protrusion 270b provided corresponding to the through hole 275b. The protrusion 270b is provided on the outer peripheral side of the through hole 275b to protrude radially outward from the connection substrate 100.

[0078] Similarly, the step portion 270C includes a through hole 275c through which the corresponding connecting pin 250C passes, and a protrusion 270c provided corresponding to the through hole 275c. The protrusion 270c is provided on the outer peripheral side of the through hole 275c to protrude radially outward from the connection substrate 100.

[0079] Furthermore, in each of the step portions 270A, 270B, and 270C, large-diameter openings 276a, 276b, and 276c communicating with the through holes 275a, 275b, and 275c are provided below the through holes 275a, 275b, and 275c.

[0080] The concave and convex shapes formed by the steps 270A, 270B, and 270C differ in circumferential direction on one side (left side in the figure) and on the other side (right side in the figure) of a center plane Yb passing through the center axis of through-hole 275b of step 270B corresponding to connecting pin 250B, in the radial direction of wiring board 100. In other words, they are asymmetrical about center plane Yb. In this case, corresponding to the aforementioned asymmetric arrangement of connecting pins 250A-250C, the distance Mab between center plane Ya passing through the center axis of through-hole 275a of step 270A corresponding to connecting pin 250A and center plane Yb is different from the distance Mbc between center plane Yc passing through the center axis of through-hole 275c of step 270C corresponding to connecting pin 250C and center plane Yb. That is, the positions of the through holes 275a, 275b, and 275c are configured so that, with respect to the above-mentioned center plane Yb, the position of the through hole 275a on one side (the left side in the figure) of the center plane Yb and the position of the through hole 275c on the other side (the right side in the figure) become asymmetric.

[0081] <Connector body>

[0082] In this embodiment, as described above Figure 1 As shown, the aforementioned load-opposite side bracket 13 is provided with an opening 13A toward the radially outer side. By installing the connector body CB (see the later-described Figure 11 ) to connect the internal devices of the rotating electrical machine 1 with the main circuit outside the rotating electrical machine 1, and to conduct power supply and signal transmission between them.

[0083] like Figure 11As shown, the connector body CB includes a main circuit connector 300 and a direct connection connector 400 provided in electrical communication with the main circuit connector 300 . The main circuit connector 300 and the direct connection connector 400 are integrally configured to be attachable and detachable.

[0084] like Figure 1 and Figure 2 As shown, the lower portion of the main circuit connector 300 is inserted into the opening 13A, and the flange 310 abuts against the upper edge of the opening 13A, whereby the main circuit connector 300 is engaged with the opening 13A.

[0085] like Figure 2 As shown, the direct connection connector 400 includes receiving holes 410A, 410B, and 410C corresponding to the aforementioned connection pins 250A, 250B, and 250C provided on the connection terminal 200. Figure 12 When the operation shown in (a) to (c) is engaged with the opening 13A, the direct connection connector 400 is inserted into the opening 13A (see Figure 1 and Figure 2 ). In addition, at this time, if Figure 1 As shown, the axial position of the radial center line kc of the direct connection connector 400 (in other words, the radial center line of the connector body CB) and the axial position of the radial center line kp of each connection pin 250A to 250C are along the axial direction ( Figure 1 (in the left-right direction in FIG. 2 ) are offset from each other by a distance x. Furthermore, although detailed illustration and description are omitted, the connection pins 250A, 250B, and 250C of the connection terminal 200 mounted on the wiring substrate 100 as described above are inserted into and housed in the respective receiving holes 410A, 410B, and 410C of the direct-connect connector 400. Each receiving hole 410A, 410B, and 410C is provided with a conductive member (not shown) capable of electrically connecting to the main circuit connector 300 via internal wiring within the direct-connect connector 400. When housed, these conductive members are electrically connected to the connection pins 250A, 250B, and 250C.

[0086] In addition, the direct connection connector 400 is connected by Figure 12 When the operations shown in (a) to (c) of FIG. 1 and the connection pins 250A, 250B, and 250C are connected, the elastic member 270 is clamped and pressed between the direct-connect connector 400 and the connection terminal 200 as shown in these figures. At this time, the protrusions 270a, 270b, and 270c of the elastic member 270 are compressed between the direct-connect connector 400 and the connection terminal 200 and deformed in an expanded manner (see FIG. Figure 12 (c)).

[0087] <Positioning during resin molding>

[0088] In the rotating electrical machine 1 of this embodiment, as described above, the connection pins 250 and the connection terminals 200, which are electrically connected to the direct-connection connector 400 of the connector body CB, are mounted on the wiring substrate 100. Meanwhile, the wiring substrate 100, along with the stator 2, is secured to the frame 4 via the resin mold 15. Therefore, to ensure accurate electrical connection between the connection pins 250 and the direct-connection connector 400, it is important to precisely position the wiring substrate 100 against the stator 2 during resin molding.

[0089] <Frame positioning reference hole>

[0090] In this embodiment, the reference hole which becomes the reference of all positioning when positioning each part by the method described below is provided in the frame 4. That is, as mentioned above Figure 6 As shown, four thick-walled bosses 4a are provided on the radially outer periphery of the frame 4. Reference holes 500A, 500B, 500C, and 500D are formed axially in each boss 4a. Hereinafter, these reference holes 500A-500D will be referred to as "reference holes 500" as appropriate. Reference holes 500 are machined with sufficient precision using a known method such as reaming.

[0091] <Positioning the Connecting Terminals on the Wiring Board>

[0092] In this embodiment, first, before the resin molding, the reference hole 500 of the frame 4 is used to position the wiring substrate 100 relative to the frame 4, and then the connection terminal 200 is positioned relative to the wiring substrate 100 and installed. Figure 13 and Figure 14 A positioning tool 600 is shown.

[0093] The tool 600 comprises: a substantially flat plate-shaped main body 601; a thick wall portion 611 provided on one side of the main body 601 ( Figure 13 thick-walled portion 612, which is provided on the other side of the main body portion 601 ( Figure 13 the lower side in the middle); a through hole 621, which is opened in the thick-walled portion 611 in a direction perpendicular to the surface direction of the main body 601; a through hole 622, which is opened in the thick-walled portion 612 in a direction perpendicular to the surface direction of the main body 601; and through holes 631, 632, and 633, which are provided from the area of ​​the main body 601 close to the thick-walled portion 612 to the thick-walled portion 612.

[0094] like Figure 14As shown, pins P1 and P2, machined with high precision, are pre-inserted into reference holes 500A and 500C of frame 4. Then, tool 600 is positioned so that through-holes 621 and 622 overlap with reference holes 500A and 500C of frame 4, respectively. This allows tool 600 to be precisely positioned relative to frame 4 in the rotational direction (in other words, the circumferential direction, the same applies hereinafter).

[0095] Next, in the assembly obtained by inserting the connection substrate 100 into the previously assembled stator 2, the protrusions 124d, 124e, and 124f protruding from the connection substrate 100 are respectively inserted into the through holes 631, 632, and 633 of the tool 600 (see Figure 13 ). As a result, the connection substrate 100 is positioned relative to the tool 600 in the aforementioned rotation direction.

[0096] The main body 601 is on the above side ( Figure 13 The end portion (upper side) includes positioning end portions 601p, 601r and a positioning end portion 601s that are cut into a substantially L-shape.

[0097] To position the connecting terminal 200, the positioning end 601p of the tool 600 abuts the positioning end surface 200p of the connecting terminal 200, the positioning end 601r abuts the positioning end surface 200r, and the positioning end 601s abuts the positioning end surface 200s. This positions the connecting terminal 200 relative to the tool 600 in the aforementioned rotational direction. Furthermore, in this state, the supporting leg 200b is inserted into the supporting hole 230b of the conductive component 110a of the wiring substrate 100, and the supporting legs 200a and 200c are inserted into the supporting holes 230a and 230c of the conductive component 110b and secured with solder. After the wiring substrate 100 and the connecting terminal 200 are thus fixed with high precision in their relative rotational positioning using the tool 600, the tool 600 and pins P1 and P2 are removed from the frame 4.

[0098] <Positioning of Various Parts of the Mold Used in Resin Molding>

[0099] As described above, the stator 2 and terminal board 100 assembly, along with the connection terminals 200, forms a single unit, rotationally aligned with each other. This unit is then covered with the resin mold 15 and secured to the frame 4. During this resin molding, the mold DI used for resin molding is used to position the unit in the axial direction and in the rotational direction relative to the frame 4.

[0100] <Axial Positioning>

[0101] like Figure 15As shown schematically, the molding die DI used to mold the resin molded portion 15 has an end face d1 that abuts against the abutting end face 4b (an example of a second abutting face) on the opposite side of the load of the frame 4 during resin molding. The molding die DI also has an end face d2 that abuts against the abutting end face 200e (an example of a first abutting face) on the opposite side of the load of the connection terminal 200 during resin molding. Specifically, the abutment of the end face d2 of the molding die DI with the abutting end face 200e achieves alignment of the end face positions.

[0102] Thus, the abutting end face 4b of the frame 4 abuts against the end face d1 of the molding die DI formed with extremely high precision, and the abutting end face 200e of the connecting terminal 200 abuts against the end face d2. Thus, the frame 4 and the connecting terminal 200 are positioned in the axial direction.

[0103] <Reference hole of the bracket on the opposite side of the load>

[0104] On the other hand, as will be described later, in this embodiment, holes 700A, 700B, 700C, and 700D (an example of positioned holes) for positioning and attaching the counter-load-side bracket 13 relative to the frame 4 are formed in the counter-load-side bracket 13 in the axial direction at positions corresponding to (coaxially coaxial with) the reference holes 500A, 500B, 500C, and 500D of the frame 4, respectively. Hereinafter, these holes 700A to 700D will be collectively referred to as "holes 700," as appropriate.

[0105] By tightening the bolts 710A, 710B, 710C, 710D (hereinafter referred to as "bolts 710") that engage with the above-mentioned holes 700A, 700B, 700C, 700D to the internal threads formed in the above-mentioned reference holes 500A, 500B, 500C, 500D, the load-opposite side bracket 13 is finally fixed to the frame 4 after the resin molded part 15 is formed.

[0106] <Positioning in the direction of rotation>

[0107] The reference holes 500 of the frame 4 are used to position the assembly of the stator 2 and the wiring substrate 100, and the integrated component of the connection terminals 200, relative to the frame 4 in the rotational direction. Specifically, during resin molding, a positioning pin (an example of a tool, not shown) that has been pre-machined with high precision is inserted into any one of the reference holes 500A to 500D of the frame 4 as a resin molding tool. This positioning pin has an end surface (an example of a fourth abutment surface, not shown) against which the molding die DI abuts during resin molding.

[0108] Furthermore, any one of the connection pins 250A, 250B, and 250C provided on the connection terminal 200 includes an abutting end surface (an example of a third abutting surface, not shown) against which the molding die DI abuts during resin molding.

[0109] The molding die DI has an end surface that abuts against the abutting end surface of the positioning pin during resin molding, and an end surface (not shown) that abuts against the abutting end surface of the connecting pin.

[0110] In this way, the positioning pins and the connecting pins are respectively abutted against the two end surfaces of the molding die DI formed with extremely high precision, thereby achieving the positioning of the frame 4 and the connecting pins 250 (in other words, the connecting terminals 200 ) in the rotational direction.

[0111] <Positioning of the bracket on the opposite side of the load>

[0112] As described above, with the frame 4 and the connection terminals 200 positioned in the axial direction and the frame 4 and the connection terminals 200 positioned in the rotational direction, resin molding is performed by a known method to form the resin molded portion 15. This forms a molded assembly of the frame 4, stator 2, wiring board 100, connection terminals 200, and connection pins 250 that is precisely positioned in the axial and rotational directions.

[0113] With the molded assembly formed, bolts 710 engaging holes 700 of the opposite-load-side bracket 13 are tightened into the reference holes 500 of the frame 4 included in the molded assembly. This secures the opposite-load-side bracket 13 while being precisely positioned in the rotational direction relative to the frame 4, and thus the molded assembly. Consequently, the direct-connect connector 400 of the connector body CB, which engages with the opening 13A of the opposite-load-side bracket 13, can be precisely positioned relative to the connection terminals 200 and connection pins 250 included in the molded assembly.

[0114] <Effects of Implementation>

[0115] As described above, in the rotating electrical machine 1 of the present embodiment, the connection terminal 200 is attached to the end portion on the opposite side of the load of the connection substrate 100 , and the connection pin 250 is provided to protrude radially outward from the connection terminal 200 .

[0116] On the other hand, opening 13A is provided radially outward of opposite-load-side bracket 13, which is fixed to the opposite-load-side of frame 4, so that main circuit connector 300 engages with opening 13A. Main circuit connector 300 is provided with direct-connect connector 400 in electrical communication therewith. When engaged with opening 13A, direct-connect connector 400 receives connection pins 250 and is in electrical communication therewith.

[0117] As a result, according to the rotating electrical machine 1 of this embodiment, the connection substrate 100 and the main circuit connector 300 can be directly connected without using lead wires in the path of the connection substrate 100 → connection terminal 200 → connection pin 250 → direct connection connector 400 → main circuit connector 300.

[0118] Furthermore, in this embodiment, particularly when the connection substrate 100 and the main circuit connector 300 are directly connected through electrical conduction between the direct connection connector 400 and the connection pins 250 as described above, the elastic member 270 is sandwiched between the connection terminal 200, from which the connection pins 250 protrude, and the direct connection connector 400. This prevents the connection pins 250 from being exposed outside the anti-load-side bracket 13 through the gap between the direct connection connector 400 and the connection terminal 200. Consequently, the connection pins 250 can be protected from conductive powder, moisture, and other substances that may be present within the internal space of the rotating electrical machine 1.

[0119] Furthermore, in this embodiment, particularly when direct-connect connector 400 and connection pin 250 are electrically connected, protrusions 270a to 270c provided on elastic member 270 are compressed and deformed between direct-connect connector 400 and connection terminal 200. This deformation during compression expands as it is flattened, thereby reliably filling and sealing the gap between direct-connect connector 400 and connection terminal 200, and reliably preventing the intrusion of conductive powder, moisture, and the like.

[0120] Furthermore, in this embodiment, the plurality of connecting pins 250 are disposed on different stepped portions 200A to 200C of the connecting terminal 200. This creates a height difference compared to a case where the plurality of connecting pins 250 are disposed on a single, common flat surface of the connecting terminal 200. This allows for a correspondingly greater creepage distance between the connecting pins 250. Consequently, short circuits or grounding between the connecting pins 250 can be further suppressed.

[0121] Furthermore, in this embodiment, particularly when multiple connection pins 250 are provided on the connection terminal 200 as described above, these connection pins 250 are arranged asymmetrically, that is, arranged in an asymmetric arrangement, relative to the circumferential center plane (plane Xb in the aforementioned example). Consequently, when the connection pins 250 are inserted into the direct-connect connector 400 and electrically connected, the correct position allows for smooth installation of the direct-connect connector 400. However, an incorrect position (the opposite) may prevent the direct-connect connector 400 from being installed. Consequently, incorrect installation, which could occur if symmetry were assumed, can be reliably prevented.

[0122] Furthermore, in this embodiment, particularly when multiple connection pins 250 are provided on the connection terminal 200 as described above, the shape of the area of ​​the connection terminal 200 where these connection pins 250 are provided (in the above example, the overall shape of the steps 200A, 200B, and 200C) is asymmetrical, or in other words, asymmetric, with respect to the circumferential center plane (in the above example, plane Xb). Consequently, when the connection pins 250 are inserted into the direct-connect connector 400 to establish electrical connection, the direct-connect connector 400 can be smoothly installed if the correct position is used. However, if the position is incorrect (the opposite position), the direct-connect connector 400 may be impossible to install. As a result, incorrect installation, which could occur if symmetry is assumed, can be reliably prevented.

[0123] Furthermore, in this embodiment, the stator 2 and the connection substrate 100 are particularly fixed to the frame 4 via the resin mold 15. At this point, the molding die DI used for resin molding abuts against both the abutment end face 200e of the end face opposite the load side of the connection terminal 200 and the abutment end face 4b of the end face opposite the load side of the frame 4. This allows the connection terminal 200 and the frame 4 to be precisely positioned in the axial direction via the molding die DI. This allows the main circuit connector 300, which is fixed to the direct connection connector 400 electrically connected to the connection pins 250 of the connection terminal 200, to be accurately positioned axially relative to the electromagnetic components, such as the stator 2 and rotor 3, within the frame 4. As a result, the assembly process for the aforementioned structure directly connecting the connection substrate 100 and the main circuit connector 300 can be relatively easily automated.

[0124] Furthermore, in this embodiment, the frame 4 is provided with a reference hole 500 serving as a positioning reference, and the opposite-load-side bracket 13 is provided with a hole 700 positioned so as to be at the same axial position as the reference hole 500. Thus, by positioning the hole 700 of the opposite-load-side bracket 13 at the same axial position as the reference hole 500 of the frame 4, the opposite-load-side bracket 13 can be positioned circumferentially relative to the frame 4.

[0125] Furthermore, in this embodiment, the stator 2 and the connection substrate 100 are particularly fixed to the frame 4 via the resin mold 15. At this point, the molding die DI used for resin molding abuts both the end surface (third abutment surface) of the connection pin 250 and the end surface (fourth abutment surface) of the positioning pin inserted into the reference hole 500 of the frame 4. This allows the connection pin 250 and the reference hole 500 to be precisely positioned circumferentially via the molding die DI. Furthermore, as described above, the opposite-load-side bracket 13 and the frame 4 are also precisely positioned circumferentially with reference to the reference hole 500. Therefore, the connection pin 250, the frame 4, and the opposite-load-side bracket 13 can be precisely positioned circumferentially relative to each other. Consequently, the main circuit connector 300, which is fixed to the direct connection connector 400, into which the connection pin 250 is inserted, can be accurately positioned circumferentially relative to the electromagnetic components, such as the stator 2 and the rotor 3, within the frame 4. As a result, the assembly process of the aforementioned structure for directly connecting the connection substrate 100 and the main circuit connector 300 can be automated relatively easily.

[0126] <Other Modifications>

[0127] In the above description, when terms such as "perpendicular," "parallel," and "flat" are used, these terms are not strictly defined. Specifically, these terms refer to tolerances and errors permitted in design and manufacturing, meaning "substantially perpendicular," "substantially parallel," and "substantially flat."

[0128] In the above description, when there are descriptions of apparent dimensions and sizes as "same," "equal," or "different," these descriptions are not strictly speaking accurate. Specifically, these "same," "equal," and "different" refer to tolerances and errors permitted in design and manufacturing, and mean "substantially the same," "substantially equal," or "substantially different."

[0129] In addition to the above, the methods of the above-mentioned embodiment and modified examples may be used in combination as appropriate.

[0130] In addition, although not all of the above embodiments are illustrated, various modifications may be added and implemented without departing from the spirit of the invention.

Claims

1. A rotating electrical machine, comprising: rotor and stator; a terminal block for wiring ends of the stator windings in a prescribed wiring pattern; a frame extending in an axial direction; a bracket fixed to one side of the axial direction of the frame; and A main circuit connector engages with an opening of the bracket facing radially outward. The stator and the terminal block are fixed to the frame, It is characterized by: The rotating electrical machine comprises: a connecting terminal mounted on an end portion of one side of the axial direction of the terminal block; a connecting pin, which protrudes from the connecting terminal toward the radially outer side and is electrically connected to the connecting terminal; a direct connection connector provided so as to be electrically connected to the main circuit connector and accommodating the connection pins and electrically connected to the connection pins when the main circuit connector is engaged with the opening; and an elastic member, which is sandwiched between the direct connection connector and the connection terminal when the direct connection connector and the connection pin are electrically connected. The elastic component comprises: a through hole for the connecting pin to pass through; and The protrusion is provided so as to protrude outward in the radial direction of the through hole, and is compressed and deformed between the direct connection connector and the connection terminal when the direct connection connector and the connection pin are electrically connected.

2. The rotating electrical machine according to claim 1, wherein: The connection terminal has a plurality of stepped portions forming a concave-convex shape facing the direct connection connector, and the plurality of connection pins are provided on the stepped portions different from each other.

3. The rotating electrical machine according to claim 1, wherein The connection pins of the connection terminal are arranged at positions asymmetrically on one side and the other side of a central plane in a circumferential direction.

4. The rotating electrical machine according to claim 1, wherein The arrangement area of ​​the plurality of connection pins in the connection terminal is configured to be asymmetrical on one side and the other side of a central plane in a circumferential direction.

5. The rotating electrical machine according to claim 1, wherein A position of a radial center line of the direct-connect connector in the axial direction and a position of a radial center line of each of the plurality of connection pins in the axial direction are offset from each other along the axial direction.

6. The rotating electrical machine according to claim 1, wherein The stator and the terminal block are fixed to the frame by resin molding, The connection terminal and the frame each include a first abutting surface and a second abutting surface on one end surface in the axial direction, against which a molding die used for the resin molding abuts.

7. The rotating electrical machine according to claim 6, wherein: The frame has a reference hole that serves as a positioning reference. The bracket includes a positioned hole positioned so as to have the same axial center position as the reference hole.

8. The rotating electrical machine according to claim 7, wherein: The connecting pin and the predetermined tool inserted into the reference hole each include a third abutting surface and a fourth abutting surface against which a molding die used for the resin molding abuts.

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