Wiring substrate and motor

Abstract

To provide a wiring substrate and motor that enable more precise cable placement.SOLUTION: A wiring substrate is a substrate for wiring a first cable 40 and a second cable 51, and has a plate portion 31, a through hole 32, and a notch portion 33. The through hole 32 is arranged in the plate portion 31. The notch portion 33 is cut inward from the edge of the plate portion 31. The first cable 40 is arranged in the through hole 32. The second cable 51 is arranged in the notch portion.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a wiring board and a motor. [Background technology]

[0002] The stator of Patent Document 1 comprises an annular stator core, a coil main body with coil end portions protruding from the axial end of the stator core, a power line joined to the coil main body and drawn out to the outside of the stator core with a coil terminal provided at the end, a first resin molded portion covering the coil end portions, and a second resin molded portion covering the joint joining the coil main body and the power line. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-086465 Summary of the Invention [Problem to be solved by the invention]

[0004] In the stator of Patent Document 1, the coil terminals are prone to movement relative to the stator core, and when an external cable is connected to the coil terminals, the arrangement of the coil terminals is prone to movement.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and its purpose is to provide a wiring board and a motor that enable more precise placement of cables. [Means for solving the problem]

[0006] An exemplary wiring board of the present disclosure is a board for connecting a first cable and a second cable. The exemplary wiring board of the present disclosure has a plate portion, a through hole, and a notch portion. The through hole is disposed in the plate portion. The notch portion is cut out from an edge of the plate portion toward the inside. The first cable is disposed in the through hole. The second cable is disposed in the notch portion.

[0007] An exemplary motor according to the present disclosure includes a wiring board, a shaft, a stator, and a rotor. The shaft extends axially along a central axis. The stator is positioned radially outward from the shaft. The rotor rotates relative to the stator. [Effects of the Invention]

[0008] The present exemplary disclosure allows for more precise placement of cables. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing the appearance of a motor according to an exemplary embodiment. [Figure 2] FIG. 2 is a diagram showing the inside of the motor of the exemplary embodiment. [Figure 3] FIG. 3 is a diagram illustrating a stator of the motor of the exemplary embodiment. [Figure 4] FIG. 4 is a diagram illustrating an exemplary embodiment of a wiring board. [Figure 5] FIG. 5 is a diagram showing an example of a connection between a conductive wire and a lead wire using a wiring board. [Figure 6] FIG. 6 is a diagram showing another example of the connection between the conductive wires and the lead wires using the wiring board. [Figure 7] FIG. 7 is a diagram showing still another example of the connection between conductive wires and lead wires using a wiring board. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. In the drawings, identical or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated. For ease of understanding, the central axis direction substantially parallel to the motor's rotation shaft will be referred to as the first direction D1, one side of the first direction D1 will be referred to as the first direction one side D11, and the other side of the first direction D1 will be referred to as the first direction other side D12. Furthermore, the radial direction centered on the motor's rotation shaft will be referred to as the radial direction D2, and the circumferential direction centered on the motor's rotation shaft will be referred to as the circumferential direction D3. However, these definitions of directions are merely for convenience of explanation, and do not limit the orientation of the motor according to the present invention during use, except when it is necessary to specifically define the horizontal and vertical directions. Furthermore, in this application, the term "orthogonal direction" also includes substantially orthogonal directions.

[0011] A motor 1 according to an exemplary embodiment will be described with reference to Figures 1 and 2. Figure 1 is a diagram showing the exterior of the motor 1 according to the exemplary embodiment. Figure 2 is a diagram showing the interior of the motor 1 according to the exemplary embodiment. Figure 2 shows a stator 12 and a wiring member 20, which are components of the motor 1 shown in Figure 1. Figure 3 is a diagram showing the stator 12 of the motor 1 according to the exemplary embodiment. To facilitate understanding, Figure 3 omits part of the stator 12, and only some of the multiple components are designated by reference numerals.

[0012] As shown in FIGS. 1 to 3, the motor 1 includes a motor case 11, a stator 12, a rotor 13, a shaft 14, a wiring member 20, and a wiring board 30.

[0013] The motor 1 is connected to, for example, conductors 40 that are electrically connected to the outside. As an example, the conductors 40 include power lines 40U, 40V, and 40W through which three-phase AC flows. In other words, the motor 1 is a three-phase AC motor. The conductors 40 may also include signal lines through which electrical signals flow. The power lines 40U, 40V, and 40W are conductors that are electrically connected to the coils 124 of the stator 12 described below, and may take various forms, such as lead wires, metal bus bars, terminals, or conductors that are a combination of these. The conductors 40 are an example of a first cable.

[0014] The stator 12 has an annular shape centered on a central axis J extending in a first direction D1. The stator 12 has an annular or cylindrical stator core 121 and a coil 124 wound around the stator core. As shown in FIG. 3, the stator core 121 has a plurality of teeth 122 provided on the inner circumferential surface of an annular core back centered on the central axis J. Each of the plurality of teeth 122 extends outward in a radial direction D2 from the inner circumferential surface of the core back. The plurality of teeth 122 are arranged side by side along a circumferential direction D3.

[0015] Each of the teeth 122 is covered with an insulator made of resin, which is an insulating member. The coil 124 is attached to each tooth 122 via the insulator. Specifically, the coil 124 is formed by winding a conductor 50 corresponding to one of the phases of the three-phase AC around each tooth 122 via the insulator. In other words, the coil 124 includes three types of coils formed by conductors 50U, 50V, and 50W, respectively, corresponding to the U-phase, V-phase, and W-phase of the three-phase AC.

[0016] A lead wire 51 extends from any of the coils 124. Specifically, the lead wire 51 is a portion of the conductor 50 that forms the coil 124 of each phase, other than the portion that forms the coil 124 and extends from the coil 124. In other words, the lead wire 51U is a portion of the conductor 50U that does not form the coil 124 and extends from the coil 124. The lead wire 51V is a portion of the conductor 50V that does not form the coil 124 and extends from the coil 124. The lead wire 51W is a portion of the conductor 50W that does not form the coil 124 and extends from the coil 124. The lead wire 51 is an example of a second cable. In other words, the stator 12 has a coil 124 that is connected to the second cable.

[0017] The rotor 13 faces the stator 12 in the radial direction D2. In this embodiment, the rotor 13 is located inside the stator 12 in the radial direction D2. The rotor 13 has a yoke (not shown) and a magnet (not shown) arranged in the yoke. Due to the interaction between the coil (not shown) and the magnet (not shown), the rotor 13 rotates in the circumferential direction D3 around the central axis J relative to the stator 12. In other words, in this embodiment, the motor 1 is an inner rotor type motor. However, the motor 1 may also be an outer rotor type motor in which the rotor 13 is located outside the stator 12 in the radial direction D2.

[0018] A shaft 14 extending in a first direction D1 is attached to the rotor 13. The shaft 14 coincides with the central axis J. In other words, the shaft 14 is the rotation axis of the rotor 13 and extends in the axial direction along the central axis J. The stator 12 is located radially outward of the shaft 14.

[0019] The wiring member 20 accommodates the lead wires 51. The wiring member 20 is disposed on one side D11 in the first direction with respect to the stator 12. In other words, the wiring member 20 is located on one side D11 in the first direction with respect to the stator 12. Typically, the wiring member 20 is attached to the stator 12.

[0020] The wiring member 20 has a housing portion 21 and a terminal portion 22. For example, the housing portion 21 is formed from an insulating resin.

[0021] The accommodating portion 21 has an annular shape that conforms to the shape of the stator 12. The accommodating portion 21 accommodates the lead wires 51. Specifically, in the accommodating portion 21, the lead wires 51U, 51V, and 51V are arranged side by side in the radial direction D2 and are laid along the circumferential direction D3.

[0022] The terminal portion 22 forms input / output terminals of the motor 1. The terminal portion 22 has a terminal case 22A and a cover 22B. Typically, the terminal case 22A is formed as a single member together with the accommodating portion 21. The terminal case 22A has a substantially rectangular parallelepiped shape and is disposed outside the accommodating portion 21 in the radial direction D2. One side D11 in the first direction of the terminal case 22A is open. A cover 22B is disposed on the one side D11 in the first direction of the terminal case 22A. The cover 22B covers the open one side D11 in the first direction of the terminal case 22A.

[0023] A wiring board 30, which is a board for connecting the conductive wires 40 and the lead wires 51, is disposed on the terminal portion 22. Typically, the wiring board 30 is disposed on the stator 12.

[0024] Next, the wiring board 30 of an exemplary embodiment will be described with reference to Figures 2 and 4. Figure 4 is a diagram showing the wiring board 30 of an exemplary embodiment.

[0025] 2, terminal case 22A is provided with grooves 221 and 222 that extend in first direction D1, and groove 223 that is connected to grooves 221 and 222 and extends in a direction intersecting first direction D1. Grooves 221 and 222 are arranged opposite each other. Edges of wiring board 30 are positioned in grooves 221, 222, and 223.

[0026] Specifically, as shown in FIG. 4, the wiring board 30 has a plate-shaped plate portion 31. The plate portion 31 has a first edge 31a, a second edge 31b, a third edge 31c, and a fourth edge 31d. The first edge 31a and the second edge 31b are located on opposite sides of each other. The third edge 31c and the fourth edge 31d are located on opposite sides of each other. The first edge 31a connects to one end of the third edge 31c and one end of the fourth edge 31d. The second edge 31b connects to the other end of the third edge 31c and the other end of the fourth edge 31d. In the terminal case 22A, the third edge 31c is located in the groove 221. The fourth edge 31d is located in the groove 222. The second edge 31b is located in the groove 223. The cover 22B is provided with a groove 224 (FIGS. 5, 6, and 7) facing the groove 223. The first edge 31a is positioned in the groove 224 of the cover 22B.

[0027] The plate portion 31 has a first surface 31F and a second surface 31R opposite to the first surface (FIGS. 2, 5, 6, and 7). FIG. 4 shows the first surface 31F side of the plate portion 31.

[0028] The wiring board 30 further includes three through holes 32A, 32B, and 32C and three notches 33A, 33B, and 33C. The through holes 32A, 32B, and 32C are arranged in the plate portion 31. The through holes 32A, 32B, and 32C penetrate the plate portion 31. The through holes 32A, 32B, and 32C are arranged side by side in a direction along the first edge 31a and the second edge 31b. For example, the through holes 32A, 32B, and 32C are each circular. Hereinafter, each of the through holes 32A, 32B, and 32C may be referred to as a through hole 32.

[0029] The cutouts 33A, 33B, and 33C are respectively cut inward from the first edge 31a and the second edge 31b of the plate portion 31. Hereinafter, each of the cutouts 33A, 33B, and 33C may be referred to as a cutout 33.

[0030] Power line 40U (FIGS. 5, 6, and 7) is located in through-hole 32A. Power line 40V is located in through-hole 32B (FIGS. 5, 6, and 7). Power line 40W is located in through-hole 32C (FIGS. 5, 6, and 7). In summary, conductive wire 40 is located in through-hole 32. Note that power lines 40U, 40V, and 40W may be located in locations other than through-holes 32A, 32B, and 32C, respectively.

[0031] Any of the lead wires 51 is located in the cutout portion 33A (FIGS. 5, 6, 7). Any of the lead wires 51 is located in the cutout portion 33B (FIGS. 5, 6, 7). Any of the lead wires 51 is located in the cutout portion 33C (FIGS. 5, 6, 7). In summary, any of the lead wires 51 is located in the cutout portion 33.

[0032] This limits the movement range of the conductor 40 to the inside of the through hole 32, and limits the movement range of the lead wire 51 to the inside of the notch 33. As a result, the conductor 40 and the lead wire 51 are less likely to move relative to the wiring board 30. This allows the conductor 40 and the lead wire 51 to be positioned more precisely relative to the wiring board 30. This reduces the manufacturing tolerance of the motor 1 and makes it easier to bring the terminal case 22A and the cover 22B into close contact with each other compared to, for example, a case in which the conductor 40 and the lead wire 51 are connected using crimp terminals.

[0033] For example, the diameter of the through hole 32 is large enough to pass the conductive wire 40. More specifically, the diameter of the through hole 32 is approximately the same as the diameter of the core wire 41a (FIGS. 5, 6, and 7) which is the conductor of the conductive wire 40.

[0034] The wiring board 30 further has lands 35 to which the conductive wires 40 are soldered. Specifically, the wiring board 30 has lands 35A, 35B, and 35C. The land 35A is disposed surrounding the through hole 32A. The land 35B is disposed surrounding the through hole 32B. The land 35B is disposed surrounding the through hole 32C.

[0035] By soldering the conductive wires 40 to the lands 35, the conductive wires 40 are fixed to the wiring board 30. Therefore, the conductive wires 40 are even less likely to move relative to the through-holes 32A.

[0036] There is no particular limitation on the shape and size of the land 35. In this embodiment, the land 35 has an annular shape that surrounds the periphery of the through-hole 32.

[0037] In this embodiment, the lands 35 are arranged only on the first surface 31F. That is, the wire connection board 30 is formed as a single-sided board (single-layer board) in which the lands are arranged only on one surface (first surface 31F). Therefore, the wire connection board 30 can be manufactured more inexpensively.

[0038] In this embodiment, the notches 33A, 33B, and 33C each have a first notch 33a located on one side of the through-holes 32A, 32B, and 32C, and a second notch 33b located on the opposite side of the first notch 33a with respect to each of the through-holes 32A, 32B, and 32C. This allows the selection of whether to place the lead wire 51 in the first notch 33a or the second notch 33b, thereby providing a wide range of options for the wiring pattern of the lead wire 51 in the terminal case 22A.

[0039] Specifically, the first notch 33a and the second notch 33b of the cutout portion 33A are disposed on opposite sides of the through hole 32A. For example, the first notch 33a of the cutout portion 33A is provided at the same position as the through hole 32A on the first edge 31a in the direction in which the first edge 31a extends. The second notch 33b of the cutout portion 33A is provided at the same position as the through hole 32A on the second edge 31b in the direction in which the second edge 31b extends. The first notch 33a of the cutout portion 33B is provided at the same position as the through hole 32B on the first edge 31a in the direction in which the first edge 31a extends. The second notch 33b of the cutout portion 33B is provided at the same position as the through hole 32B on the second edge 31b in the direction in which the second edge 31b extends. The first notch 33a of the notch 33C is provided at the same position on the first edge 31a as the through hole 32C in the direction in which the first edge 31a extends. The second notch 33b of the notch 33C is provided at the same position on the second edge 31b as the through hole 32C in the direction in which the second edge 31b extends.

[0040] The wiring board 30 also has partitions 34 that separate the second cutouts 33b. Specifically, the second cutouts 33b of the cutouts 33A have partitions 34A. The second cutouts 33b of the cutouts 33B have partitions 34B. The second cutouts 33b of the cutouts 33C have partitions 34C. The partitions 34A, 34B, and 34C each extend in a direction that intersects with the second edge 31b.

[0041] That is, second cutout 33b of cutout 33A is divided into two by partition 34A along second edge 31b. Second cutout 33b of cutout 33B is divided into two by partition 34B along second edge 31b. Second cutout 33b of cutout 33C is divided into two by partition 34C along second edge 31b.

[0042] As a result, the lead wires 51 can be routed only through the second cutout portions 33b, which allows for a wider range of wiring patterns for the lead wires 51 to be selected.

[0043] In this embodiment, the shapes and sizes of the notch 33, the first notch 33a, and the second notch 33b are not particularly limited.

[0044] For example, in the direction along the first edge 31a, the width of the first notch 33a of the notch 33A is such that three or more lead wires 51 pass through. Furthermore, the length of the first notch 33a of the notch 33A in the direction along the third edge 31c and the fourth edge 31d, i.e., the depth of the first notch 33a of the notch 33, is deeper than the depth of the groove 224 (FIGS. 5, 6, and 7) and is such that one lead wire 51 passes between the surface of the cover 22B facing the terminal case 22A. The width and depth of the first notch 33a of the notch 33B and the width and depth of the first notch 33a of the notch 33C are the same as the width and depth of the first notch 33a of the notch 33A.

[0045] Moreover, the width of one of the two divided second notches 33b in notch 33A is such that one lead wire 51 passes through it. The depth of one of the two divided second notches 33b in notch 33A is deeper than the depth of groove 222, and is such that two lead wires 51 pass through it between the surface of terminal case 22A facing cover 22B. On the other hand, the width of the other of the two divided second notches 33b in notch 33A is such that two lead wires 51 pass through it. The depth of the other of the two divided second notches 33b in notch 33A is deeper than the depth of groove 222, and is such that one lead wire 51 passes through it between the surface of terminal case 22A facing cover 22B.

[0046] The width of one of the two divided second notches 33b in notch 33B is such that two lead wires 51 can pass through it. The depth of one of the two divided second notches 33b in notch 33B is deeper than the depth of groove 222 and is such that one lead wire 51 can pass through it between the surface of terminal case 22A facing cover 22B. On the other hand, the width of the other of the two divided second notches 33b in notch 33B is such that two lead wires 51 can pass through it. The depth of the other of the two divided second notches 33b in notch 33B is deeper than the depth of groove 222 and is such that one lead wire 51 can pass through it between the surface of terminal case 22A facing cover 22B.

[0047] The width of one of the two divided second notches 33b in the notch 33C is such that one lead wire 51 passes through it. The depth of one of the two divided second notches 33b in the notch 33C is deeper than the depth of the groove 222 and is such that two lead wires 51 pass through it between the groove 222 and the surface of the terminal case 22A facing the cover 22B. On the other hand, the depth of the other of the two divided second notches 33b in the notch 33C is deeper than the depth of the groove 222 and is such that two lead wires 51 pass through it between the groove 222 and the surface of the terminal case 22A facing the cover 22B. The depth of the other of the two divided second notches 33b in the notch 33C is deeper than the depth of the groove 222 and is such that one lead wire 51 passes through it between the groove 222 and the surface of the terminal case 22A facing the cover 22B.

[0048] Next, a typical method for connecting the conductive wires 40 and the lead-out wires 51 using the wiring board 30 will be described with reference to FIGS. 4 to 7. FIG. 5 is a diagram showing an example of connecting the conductive wires 40 and the lead-out wires 51 using the wiring board 30. FIG. 6 is a diagram showing another example of connecting the conductive wires 40 and the lead-out wires 51 using the wiring board 30. FIG. 7 is a diagram showing yet another example of connecting the conductive wires 40 and the lead-out wires 51 using the wiring board 30. FIGS. 5 and 6 schematically show a star connection between the power line 40U and the lead-out wires 51U at the through hole 32A and the notch 33A. FIG. 7 is a diagram showing a delta connection between the power line 40U and the lead-out wires 51V and 51W at the through hole 32A and the notch 33A.

[0049] [Wiring example 1] As shown in FIG. 5 , the core wire 41a of the power line 40U includes a tip 41UT. The core wire 41a passes through the through hole 32A from the second surface 31R of the wiring board 30 and extends to the first surface 31F. The tip 41UT is located on the first surface 31F of the wiring board 30. The lead wire 51U includes a first wire 52a that passes through one of the two second notches 33b in the notch 33A from the first surface 31F of the wiring board 30 and extends to the second surface 31R, and a second wire 52b that extends from the first wire 52a on the second surface 31R. The second wire 52b includes a tip 52UT. The tip 52UT of the lead wire 51U is connected to the core wire 41a on the second surface 31R. That is, the second cable is connected to the first cable on the second surface 31R side of the plate portion 31. By connecting the conductive wire 40 and the lead wire 51 via the through hole 32A and the notch 33A, the conductive wire 40 and the lead wire 51 can be connected more precisely and easily.

[0050] [Wiring example 2] 6, core wire 41a of power line 40U includes tip 41UT. Core wire 41a extends from the second surface 31R side of wiring board 30 through through hole 32A to the first surface 31F side. Tip 41UT is located on the first surface 31F side of wiring board 30. Lead wire 51U includes first wire 52a extending from first surface 31F of wiring board 30 through one of two split second notches 33b in notch 33A to second surface 31R, second wire 52b extending from first wire 52a on second surface 31R, third wire 52c extending from second wire 52b through first notch 33a in notch 33A to first surface 31F, and fourth wire 52d extending from third wire 52c on first surface 31F. Fourth wire 52d includes tip 52UT. Tip 52UT of lead wire 51U is connected to core wire 41a on first surface 31F.

[0051] [Wiring example 3] As shown in FIG. 7 , core wire 41a of power line 40U includes tip 41UT. Core wire 41a extends from the second surface 31R of wiring board 30, passing through through hole 32A, to the first surface 31F. Tip 41UT is located on the first surface 31F of wiring board 30. Lead wire 51V includes first wire 52e that extends from the first surface 31F of wiring board 30, passing through one of two second notches 33b in notch 33A, and to the second surface 31R, and second wire 52f that extends from first wire 52e on the second surface 31R. Second wire 52f includes tip 52VT. Tip 52VT of lead wire 51V is connected to core wire 41a on the second surface 31R. The lead wire 51W includes a first wire 52g that extends from the first surface 31F of the wiring board 30, passes through the first notch 33a in the notch 33A, and reaches the second surface 31R, and a second wire 52h that extends from the first wire 52g on the second surface 31R. The second wire 52h includes a tip 52WT. The tip 52WT of the lead wire 51W is connected to the core wire 41a on the second surface 31R.

[0052] In this embodiment, the motor 1 is a three-phase AC motor, but there are no particular limitations on the form and type of the motor 1. When the motor 1 is a three-phase AC motor, the wiring board 30 is provided with three through holes 32 and three cutouts 33 for arranging the power lines 40U, 40V, and 40W, but the number of through holes 32 and the number of cutouts 33 may each be two or less or four or more depending on the form and type of the motor 1. Furthermore, the number of through holes 32 and the number of cutouts 33 may be different.

[0053] The embodiments of the present disclosure have been described above with reference to the drawings. However, the present disclosure is not limited to the above embodiments and can be implemented in various forms without departing from the spirit and scope of the present disclosure. Furthermore, the components disclosed in the above embodiments can be modified as appropriate. For example, some of the components shown in one embodiment may be added to the components of another embodiment, or some of the components shown in one embodiment may be deleted from the embodiment.

[0054] Furthermore, the drawings mainly show each component in a schematic manner to facilitate understanding of the disclosure, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a scope that does not substantially deviate from the effects of the present disclosure.

[0055] The present technology can be configured as follows. (1) A substrate for connecting a first cable and a second cable, A plate portion, a through hole disposed in the plate portion; a notch cut inward from the edge of the plate portion; and the first cable is disposed in the through hole; The second cable is placed in the notch. (2) The wiring board of (1) further comprises a land arranged around the through hole and to which the first cable is soldered. (3) The plate portion has a first surface and a second surface opposite to the first surface, The wiring board of (2), wherein the lands are arranged only on the first surface. (4) The cutout portion is a first notch located on one side of the through hole; a second notch portion located on the opposite side of the first notch portion with respect to the through hole; A wiring board according to any one of (1) to (3), having: (5) Further, a partition portion that partitions the second cutout portion is provided, The partition portion extends in a manner intersecting the edge of the plate portion. (6) The plate portion has a first surface and a second surface opposite to the first surface, a tip end of the first cable is located on the first surface side of the plate portion, The wiring board according to any one of (1) to (5), wherein the second cable is connected to the first cable on the second surface side of the plate portion. (7) Any of the wiring boards (1) to (6) and a shaft extending axially along a central axis; a stator positioned radially outward of the shaft; a rotor that rotates relative to the stator; A motor having (8) The stator has a coil connected to the second cable, The motor of (7), wherein the wiring board is disposed on the stator. [Industrial Applicability]

[0056] The present disclosure is applicable to the field of motors. [Explanation of symbols]

[0057] 1: Motor 12: Stator 13: Rotor 14: Shaft 30: Wiring board 31: Plate part 31F: 1st page 31R: 2nd side 31a: First Edge 31b: Second Edge 31c: Third Edge 31d: 4th edge 32, 32A, 32B, 32C: Through hole 33, 33A, 33B, 33C: Notch 33a: First notch 33b: Second notch 34, 34A, 34B, 34C: Partition 35, 35A, 35B, 35C: Land 40: Conductive wire 40U, 40V, 40W: Power line 51, 51U, 51V, 51W: Leader line 124: Coil J: Central axis

Claims

1. A substrate for connecting a first cable and a second cable, A plate portion, a through hole disposed in the plate portion; a notch cut inward from the edge of the plate portion; and the first cable is disposed in the through hole; The second cable is disposed in the notch.

2. The wiring board according to claim 1 , further comprising a land disposed around the through hole and to which the first cable is soldered.

3. The plate portion has a first surface and a second surface opposite to the first surface, The wiring board according to claim 2 , wherein the lands are disposed only on the first surface.

4. The cutout portion is a first notch located on one side of the through hole; a second notch portion located on the opposite side of the first notch portion with respect to the through hole; The wiring board according to claim 1 , further comprising:

5. The second cutout portion further includes a partition portion that partitions the second cutout portion, The wiring board according to claim 4 , wherein the partition portion extends in a manner intersecting an edge of the plate portion.

6. The plate portion has a first surface and a second surface opposite to the first surface, a tip end of the first cable is located on the first surface side of the plate portion, The wiring board according to claim 1 , wherein the second cable is connected to the first cable on the second surface side of the plate portion.

7. The wiring board according to any one of claims 1 to 3, a shaft extending axially along a central axis; a stator positioned radially outward of the shaft; a rotor that rotates relative to the stator; A motor having

8. the stator has a coil connected to the second cable; The motor according to claim 7 , wherein the connection board is disposed on the stator.

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