Coil body, armature and rotating electrical machine

Abstract

A coil former (32) comprises a substrate (34) formed in a shape extending radially using an insulating material and stacked axially. The coil former (32) also includes a magnetic field-generating section (80) formed on the substrate (34) using a conductive material, which generates a rotating magnetic field when energized. Furthermore, the coil former (32) includes a gain section (70) formed on a surface of the substrate (34) facing axially, in a region distinct from the region where the magnetic field-generating section (80) is located. The gain section amplifies the substrate (34).

Description

[Cross-reference to related registration]

[0001] The present application is based on and claims the priority benefit of Japanese patent application number 2023-103767, which was filed on June 23, 2023, the description of which is incorporated by reference. [Technical field]

[0002] The present disclosure relates to a coil former, an armature and a rotating electrical machine. [Background of the invention]

[0003] The PTL 1, disclosed below, reveals a coil for a rotating electrical machine, such as a motor. The coil for a rotating electrical machine described in the document comprises a plurality of coil plate elements formed in a disk shape, with a predetermined wiring pattern formed on these coil plate elements. Additionally, the coil plate elements are interconnected at inner and outer peripheral sections, while they are separated at intermediate sections, thus configuring a coil plate with a predetermined coil winding pattern. [Citation list][Patent publication]

[0004] [PTL 1] JP 2008-061357A [Summary]

[0005] In a coil former (the coil for a rotating electrical machine) having the configuration described in PTL 1 as above, it is assumed that ensuring a coil former strength becomes difficult when the coil plate elements become thinner.

[0006] One objective of the present disclosure is to provide a coil body whose strength can be ensured in a configuration in which base elements are stacked in an axial direction, an armature and a rotating electrical machine.

[0007] According to a first embodiment of the present disclosure, a coil former comprises: a base element formed in a shape extending in a radial direction using an insulating material and stacked in an axial direction; a magnetic field-generating section formed in the base element using a conductive material, which generates a rotating magnetic field by being energized; and an amplification section formed in a region different from the region in which the magnetic field-generating section is formed, on a surface of the base material facing in the axial direction. An armature comprises the coil former described above.A rotating electrical machine comprises a stator and a rotor configured to include the armature described above, the other of the stator and rotor having a magnet arranged opposite the coil body in the axial direction.

[0008] As a result of a configuration like this, in a configuration where the base material is stacked in the axial direction, a certain strength of the coil body can be ensured. [Short description of the drawing]

[0009] The above-described task, other tasks, features, and advantages of the present disclosure are further clarified by the detailed description given below with reference to the accompanying drawing. The drawing shows: Fig. 1 a perspective view of an engine showing a section of the engine in a cut-out state; Fig. 2 a perspective exploded view showing the engine being disassembled, with a section of components shown in a cut-away state; Fig. 3 a perspective exploded view of a coil former showing a section of the coil former in a cut-away state; Fig. 4 a top view schematically showing the coil body; Fig. 5 a diagram to explain a star connection; Fig. 6 a top view schematically showing a single substrate and a coil section formed on the single substrate and the like; Fig. 7 a cross-sectional view showing a cross-section of a section of a substrate of a specific layer and the coil section formed on the substrate in the coil section of the motor; Fig. 8 a cross-sectional view showing a cross-section of a section of substrates of a plurality of layers and the respective coil sections formed on the substrates of the plurality of layers in the coil section of the motor; Fig. 9 a top view showing a single substrate configuring a section of a coil former of a motor according to a first embodiment, and a plurality of coil sections and the like formed on the substrate; Fig. 10 a cross-sectional view, schematically showing a cross-section of the substrate and the like, along a line AA, which is in Fig. 9 is shown, taken from; Fig. 11 a top view schematically showing a single substrate configured as a section of a coil former of a motor according to a second embodiment, and a magnetic field generating section formed on the substrate and the like; Fig. 12 a cross-sectional view, schematically showing a cross-section of the substrate and the like, along a line AA, which is in Fig. 11 is shown, taken from; Fig. 13 a top view schematically showing a single substrate configured as a section of a coil former of a motor according to a third embodiment, and a magnetic field generating section formed on the substrate and the like; Fig. 14 a cross-sectional view, schematically showing a cross-section of the substrate and the like, along a line AA, which Fig. 13 is shown, taken from; Fig. 15 a cross-sectional side view schematically showing a motor according to a fourth embodiment; Fig. 16 a cross-sectional side view schematically showing a motor according to a fifth embodiment; Fig. 17 a top view schematically showing a single substrate configured as a section of a coil former of a motor according to a sixth embodiment, and a magnetic field generating section formed on the substrate and the like; Fig. 18 a cross-sectional view which schematically shows a cross-section of the substrate and the like, along a line AA which is in Fig. 17 is shown, taken from; Fig. 19 a top view schematically showing a single substrate configuring a section of a coil former of a motor according to a seventh embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 20 a top view schematically showing a single substrate configured as a section of a coil former of a motor according to an eighth embodiment, and a magnetic field generating section formed on the substrate and the like; Fig. 21 a top view schematically showing a single substrate configuring a section of a coil former of a motor according to a ninth embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 22 a top view schematically showing a single substrate configuring a section of a coil former of a motor according to a tenth embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 23 a top view schematically showing a single substrate configuring a section of a coil former of a motor according to an eleventh embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 24 a top view schematically showing a single substrate configuring a section of a coil former of a motor according to a twelfth embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 25 a top view schematically showing a single substrate configured as a section of a coil former of a motor according to a thirteenth embodiment, and a magnetic field generating section formed on the substrate and the like; Fig. 26 a top view schematically showing a part of a single substrate configuring a section of a coil former of a motor according to a fourteenth embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 27 a perspective view schematically showing a process for stacking substrates; Fig. 28 a top view, which Fig. 26 corresponds to an intervention section of another example; Fig. 29 a top view, which Fig. 26 corresponds to an intervention section of another example; Fig. 30 a top view, which Fig. 26 corresponds to an intervention section of another example; Fig. 31 a top view schematically showing a coil former of a motor according to a fifteenth embodiment; Fig. 32 a cross-sectional view which schematically shows a cross-section of the substrate and the like, taken along a line AA which is in Fig. 31 is shown; Fig. 33 a cross-sectional side view schematically showing a single substrate configuring a section of a coil former of a motor according to a sixteenth embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 34 a cross-sectional side view schematically showing a single substrate configuring a section of a coil former of a motor according to a seventeenth embodiment, and a magnetic field generating section formed on the substrate, and the like; Fig. 35 a diagram schematically showing a process for cutting a substrate and the like with a punch, showing a state before cutting; Fig. 36 a diagram schematically showing the process of cutting a substrate and the like with a punch, showing a state after completion of the cutting; Fig. 37 a top view showing an example in which one shape of an outer edge of the substrate is rectangular; Fig. 38 a top view showing an example in which the shape of the outer edge of the substrate is hexagonal; Fig. 39 a top view showing an example in which the shape of the outer edge of the substrate is dodecagonal; Fig. 40 a top view schematically showing a single substrate configured as a section of a coil former of a motor according to an eighteenth embodiment, and a magnetic field generating section formed on the substrate, and the like; and Fig. 41 a cross-sectional side view schematically showing a single substrate configuring a section of a coil former of a motor according to a nineteenth embodiment, and a magnetic field generating section formed on the substrate, and the like. [Description of the exemplary embodiment](basic configuration of a motor)

[0010] A basic configuration of a motor 10 according to an embodiment of the present disclosure is described with reference to Fig. 1 to Fig. 8 described. Here, an arrow-Z direction, an arrow-R direction, and an arrow-C direction, appropriately shown in the drawing, each indicate a side in a rotational axis direction, an outer side in a rotational radial direction, and a side in a rotational circumferential direction of a rotor 12, which is described below. Additionally, if only an axial direction, a radial direction, or a circumferential direction is specified below, the rotational axis direction, the rotational radial direction, and the rotational circumferential direction of the rotor 12 are indicated unless otherwise specified. Furthermore, the motor 10 and motors according to the embodiments described below are examples of a rotating electrical machine.

[0011] As it is in Fig. 1 and Fig. As shown in Figure 2, the motor 10 is a brushless axial-gap type motor, or a disc rotor motor, in which the rotor 12, which serves as a rotor, and a stator 14, which serves as an armature and a stator, are arranged opposite each other in the axial direction. The drawings are in Fig. 1 and Fig. Two drawings of the motor 10 and the like, which is given as an example. The number of coil sections 16, the number of magnets 18, and detailed shapes in some sections do not correspond to the descriptions given below.

[0012] The rotor 12 is configured to include a rotating shaft 22, rotatably held by a pair of bearings (not shown), a rotor core 24 fixed to the rotating shaft 22, and a plurality of magnets 18 fixed axially to one surface of the rotor core 24 on another side. The pair of bearings is each held by a frame 21 and a frame end 23. The stator 14 and the like are housed between the frame 21 and the frame end 23.

[0013] The rotor core 24 comprises a first cylindrical section 24A, which is formed in a cylindrical shape and to which the rotating shaft 22 is fixed by an interference fit or the like, and a disk section 24B, which extends outwards in the radial direction from an end section of the first cylindrical section 24A on one side in the axial direction. The disk section 24B is formed in a disk shape, the thickness direction of which is the axial direction. The magnet 18, which is described below, is fixed to the surface of the disk section 24B on the other side in the axial direction.

[0014] The plurality of magnets 18 is formed using a magnetic composite material with an intrinsic coercive force Hc of 400 kA / m or more and a residual magnetic flux density Br of 1.0 T or more. For example, the magnet 18 is formed using a magnetic composite material such as NdFe11TiN, Nd2Fe14B, Sm2Fe17N3, or FeNi. Additionally, the plurality of magnets 18 is fixed to the surface of the disk section 24B of the rotor core 24 on the opposite side in the axial direction. Furthermore, the magnet 18 whose surface on the opposite side in the axial direction is an N-pole and the magnet 18 whose surface on the opposite side in the axial direction is an S-pole are arranged in an alternating manner in the circumferential direction. The number of magnets 18 can be adjusted in a suitable manner, taking into account an output required by the motor 10 and the like.

[0015] The stator 14 comprises a stator core 26, which is formed in an annular shape and serves as an armature core, and a coil former 32, which is arranged along a surface of the stator core 26 on one side in the axial direction. The stator 14 according to the present embodiment has a toothless structure in which a section of the stator core 26 is not arranged between coil sections 16 that configure a section of the coil former 32.

[0016] The stator core 26 is formed using a soft magnetic material, such as steel. The stator core 26 is formed in a plate shape with its thickness oriented axially and is designed to have an annular shape when viewed axially. The stator core 26 is arranged coaxially with the rotor 12. A center position in the radial direction of the stator core 26 and a center position in the radial direction of the plurality of magnets 18 fixed to the rotor core 24 coincide in the radial direction.

[0017] As it is in Fig. As shown in Figure 3, the coil former 32 is configured to comprise a plurality of substrates 34, which serve as a base element formed in a sheet metal shape using an insulating material, and a plurality of coil sections 16, each formed on the plurality of substrates 34.

[0018] The substrate 34 is formed in a plate shape with its thickness direction in the axial direction and is configured to have a ring shape when viewed from the axial direction. The substrate 34 can be a flexible substrate that can be bent in its thickness direction, or it can be a substrate that cannot be bent in its thickness direction. Additionally, according to the present embodiment, the coil former 32 has a configuration in which the plurality of substrates 34 are stacked in the axial direction.

[0019] As it is in Fig. 3 and Fig. As shown in Figure 4, the plurality of coil sections 16 configures a magnetic field generating section 80, which generates a rotating magnetic field. The plurality of coil sections 16 is formed on the plurality of substrates 34. Additionally, as a result of the plurality of substrates 34 being stacked in the axial direction, the plurality of coil sections 16 are arranged at predetermined positions in the circumferential and axial directions.

[0020] Here, as it is in Fig. Figure 5 shows the plurality of coil sections 16 that configure a U-phase (U-phase coil group 42U), the plurality of coil sections 16 that configure a V-phase (V-phase coil group 42V), and a plurality of coil sections 16 that configure a W-phase (W-phase coil group 42B), connected in a star connection. That is, an end section on a side opposite an input / output section 43, which serves as an input / output path for currents into the U-phase coil group 42U, an end section on a side opposite an input / output section 34, which serves as an input / output path for currents into the V-phase coil group 42V, and an end section on a side opposite an input / output section 43, which serves as an input / output path for currents into the W-phase coil group 42B, are connected at a neutral point 44.

[0021] Fig. Figure 6 shows the substrate 34 of a first layer and a plurality of coil sections 16 formed on the substrate 34. Here, twenty coil sections 16 configuring the U-phase, twenty coil sections 16 configuring the V-phase, and twenty coil sections 16 configuring the W-phase are formed on the substrate 34 of the first layer. In the following description, the coil section 16 configuring the U-phase can be referred to as coil section 16U. Likewise, the coil section 16 configuring the V-phase can be referred to as coil section 16V. Likewise, the coil section 16 configuring the W-phase can be referred to as coil section 16W. Additionally, in the following description, the twenty coil sections 16 configuring the U-phase can be referred to as coil sections 16U1 to 16U20.Similarly, the twenty coil sections 16 that configure the V-phase can be designated as coil section 16V1 to coil section 16V20. Likewise, the twenty coil sections 16 that configure the W-phase can be designated as coil section 16W1 to coil section 16W20.

[0022] Specifically, coil section 16U1 comprises a first extension section A1, which is inclined further inwards in the radial direction towards one side in the circumferential direction, and a second extension section A2, which extends inwards in the radial direction from one end of the first extension section A1 on one side in the circumferential direction. Additionally, coil section 16U1 comprises a third extension section A3, which is inclined further inwards in the radial direction towards one side in the circumferential direction from one end of the second extension section A2 on a side opposite to the first extension section A1, and a fourth extension section A4, which is inclined further outwards in the radial direction towards one side in the circumferential direction from one end of the third extension section A3 to a side opposite to the second extension section A2.Furthermore, the coil section 16U1 has a fifth extension section A5, which extends radially outwards from one end of the fourth extension section A4 on a side opposite the third extension section A3, and a sixth extension section A6, which extends further radially outwards to one side in the circumferential direction from one end of the fifth extension section A5 on a side opposite the fourth extension section A4. In the following description, the first extension section A1 to the sixth extension section A6 can be referred to as conductor sections 16B. In the coil former 32 according to the present configuration, the conductor sections 16B are arranged regularly in the circumferential direction.

[0023] Here, the first expansion section A1, the second expansion section A2, and the third expansion section A3 are formed on one side of a surface 34A on one side of the substrate 34 (one surface on the side of the stator core 26 and the other side opposite in the axial direction). Additionally, the fourth expansion section A4, the fifth expansion section A5, and the sixth expansion section A6 are formed on one side of a surface 34B on another side of the substrate 34 (one surface on one side opposite the stator core 26 and the other side opposite in the axial direction). The third expansion section A3 and the fourth expansion section A4 can be electrically connected, for example, by a via or through-hole (not shown). Fig. 6. A section of the coil section 16U1, formed on surface 34A on one side of the substrate 34, is indicated by a solid line. Additionally, a section of the coil section 16U1, formed on surface 34B on the other side of the substrate 34, is indicated by a dashed line.

[0024] Furthermore, the second expansion section A2 and the fifth expansion section A5, described above, can be referred to as vertical sections 36. Likewise, the first expansion section A1 and the sixth expansion section A6 can be referred to as outer coil end sections 38A, serving as one coil end section, and the third expansion section A3 and the fourth expansion section A4 can be referred to as inner coil end sections 38B, serving as the other coil end sections. Moreover, as a result of a single coil section 16 comprising the first expansion section A1 to the sixth expansion section A6, the shape of the single coil section 16U1, viewed from the thickness direction of the substrate 34, is substantially V-shaped, open on the outer side in the radial direction of the substrate 34 and closed on the inner side in the radial direction.

[0025] The other end section 16U2 up to the coil section 16U20, which configures the U-phase, are also configured in a manner similar to coil section 16U1. That is, all coil sections 16 that configure the U-phase have essentially identical configurations.

[0026] Coil section 16U2, which is connected to coil section 16U1, is arranged on one side circumferentially with respect to coil section 16U1. Likewise, coil section 16U3, which is connected to coil section 16U2, is arranged on one side circumferentially with respect to coil section 16U2. Likewise, coil section 16U4, which is connected to coil section 16U3, is arranged on one side circumferentially with respect to coil section 16U3. Likewise, coil section 16U5, which is connected to coil section 16U4, is arranged on one side circumferentially with respect to coil section 16U4. Here, the sixth expansion section A6 of the coil section 16U5 and the first expansion section U1 of the coil section 16U1 intersect when viewed from the axial direction.As a result, the end of coil section 16U5 on the side connected to coil section 16U6 is positioned on one side in the circumferential direction with respect to the end section of coil section 16U1 on the side of input / output section 43.

[0027] Additionally, coil section 16U6, which is connected to coil section 16U5, is arranged on one side circumferentially with respect to coil section 16U5 and is adjacent to coil section 16U1 in the circumferential direction. Likewise, coil section 16U7, which is connected to coil section 16U6, is arranged on one side circumferentially with respect to coil section 16U6 and is adjacent to coil section 16U2 in the circumferential direction. Likewise, coil section 16U8, which is connected to coil section 16U7, is arranged on one side circumferentially with respect to coil section 16U7 and is adjacent to coil section 16U3 in the circumferential direction.Similarly, coil section 16U9, which is connected to coil section 16U8, is arranged on one side circumferentially with respect to coil section 16U8 and is adjacent to coil section 16U4 circumferentially. Likewise, coil section 16U10, which is connected to coil section 16U9, is arranged on one side circumferentially with respect to coil section 16U9 and is adjacent to coil section 16U5 circumferentially. The end section of coil section 16U10 on the side opposite coil section 16U9 is the neutral point 44.

[0028] The coil sections 16U11 to 16U20, which are connected in parallel to the coil sections 16U1 to 16U10, are configured in a manner similar to that of the coil sections 16U1 to 16U10. The coil sections 16U11 to 16U20 are arranged such that they are offset by 36° in the circumferential direction relative to the coil sections 16U1 to 16U10. As a result, the vertical sections 36 of the coil sections 16U11 to 16U20 and the vertical sections 36 of the coil sections 16U1 to 16U10 are arranged in the same positions in the circumferential direction. Here, the coil sections 16U1 to 16U10, which are connected in series, are referred to as a conductor layer 33. According to the present embodiment, two conductor layers 33U of the U-phase are provided on a single substrate 34.

[0029] Although detailed descriptions with reference numerals are omitted in the drawings, the coil sections 16V1 to 16V20, which configure the V-phase, have a configuration similar to that of the coil sections 16U1 to 16U20, which configure the U-phase. The coil sections 16V1 to 16V20, which configure the V-phase, are arranged such that they are offset by 12° in the circumferential direction with respect to the coil sections 16U1 to 16U20, which configure the U-phase. The coil sections 16V1 to 16V10, which are connected in series, are referred to as conductor layer 33. According to the present embodiment, two conductor layers 33V of the V-phase are provided on a single substrate 34.Additionally, the coil sections 16W1 to 16W20, which configure the W-phase, have a configuration similar to that of the coil sections 16U1 to 16U20, which configure the U-phase. The coil sections 16W1 to 16W20, which configure the W-phase, are arranged such that they are offset by 12° to the other side in the circumferential direction with respect to the coil sections 16V1 to 16V20, which configure the V-phase. Here, the coil sections 16W1 to 16W10, which are connected in series, are referred to as conductor layer 33. According to the present embodiment, two conductor layers 33W of the W-phase are provided on a single substrate 34.

[0030] The substrate 34 of the second layer, which is stacked on the substrate 34 of the first layer, and the plurality of coil sections 16 formed on the substrate 34 of the second layer have configurations similar to those of the substrate 34 of the first layer and the plurality of coil sections 16 formed on the substrate 34 of the first layer. According to the present embodiment, a pattern of the plurality of coil sections 16 formed on the substrate 34 of the first layer and a pattern of the plurality of coil sections 16 formed on the substrate 34 of the second layer are identical. The plurality of coil sections 16 formed on the substrate 34 of the second layer are arranged such that they are offset by 6° to the other side in the circumferential direction with respect to the plurality of coil sections 16 formed on the substrate 34 of the first layer.Then, as a result of stacking the substrate 34 of the first layer and the substrate 34 of the second layer in the axial direction, the plurality of coil sections 16 formed on the substrate 34 of the first layer and the plurality of coil sections 16 formed on the substrate 34 of the second layer are arranged at predetermined positions in the circumferential direction and the axial direction.

[0031] This shows Fig. Figure 4 is a diagram schematically showing a state in which the substrate 34 of the first layer and the substrate 34 of the second layer are stacked. In the drawing, each section of the coil sections 16 arranged between the substrate 34 of the first layer and the substrate 34 of the second layer is shown by solid lines, with other sections of the coil sections 16 shown by dashed lines. As shown in the drawing, sections of the coil sections 16 formed on the substrate 34 of the first layer and sections of the coil sections 16 formed on the substrate 34 of the second layer are arranged in an alternating manner along the circumferential direction, overlapping each other circumferentially. This point is explained in detail below with reference to a further simplified Fig. 7 and Fig. 8 described.

[0032] Here, the substrate 34 of a third layer and the substrate 34 of a fourth layer are stacked in a relationship similar to that between the substrate 34 of the first layer and the substrate 34 of the second layer. Additionally, in a configuration with five (three layers) or more substrates 34, the substrates 34 are stacked in a relationship similar to that between the substrate 34 of the first layer and the substrate 34 of the second layer. The number of coil formers 32 to be stacked (the number of substrates 34 to be stacked) can be suitably adjusted, taking into account the output required by the motor 10 and the like.

[0033] Fig. 7 and Fig. Figure 8 shows cross-sections in which a section of the coil former 32 has been cut away along the axial and circumferential directions. Specifically, it shows Fig. 7 a cross-section of a section of the substrate 34 of a specific layer and the coil section 16 (conductor section 16B) formed on the substrate 34. Fig. Figure 8 also shows a cross-section of a section of the substrates 34 of a plurality of layers and the coil sections 16 (conductor sections 16B), each of which is formed on the substrates 34 of the plurality of layers. Here, in Fig. 7 and Fig. 8. Hatching of cross-sections omitted. As it is in Fig. 7 and Fig. As shown in Figure 8, according to the present embodiment, in the state where the substrate 34 of one layer and the substrate 34 of another layer are stacked in the axial direction, the conductor section 16B formed on the substrate 34 of one layer and the conductor section 16B formed on the substrate 34 of the other layer are arranged such that they alternate along the circumferential direction. Additionally, in the state where the substrate 34 of one layer and the substrate 34 of another layer are stacked in the axial direction, the plurality of conductor sections 16B formed on the substrate 34 of one layer and the plurality of conductor sections 16B formed on the substrate 34 of the other layer overlap in the circumferential direction. Furthermore, as shown in Figure 8, Fig. 4, Fig. 6, Fig. 7 and Fig. Figure 8 shows that in the state where the substrate 34 of one layer and the substrate 34 of another layer are stacked in the axial direction, the conductor sections 16B (vertical sections 36) of the coil sections 16 of the same phase are arranged in the axial direction.

[0034] In addition, according to the present embodiment, the width dimension W1 in the circumferential direction of the conductor section 16B, which is formed on the substrate 34 of one layer, gradually decreases towards the substrate 34 of the other layer. Furthermore, the width dimension W1 in the circumferential direction of the conductor section 16B, which is formed on the substrate 34 of the other layer, gradually decreases towards the substrate 34 of the first layer. (Works and effects)

[0035] Next, the operation and effects of motor 10 according to the present embodiment will be described.

[0036] As it is in Fig. 1, Fig. 2, Fig. 4 and Fig. As shown in Figure 5, in the motor 10 according to the present embodiment, a rotating magnetic field is generated in the stator 14 by switching the power supply to the U-phase coil group 42U, the V-phase coil group 42V, and the W-phase coil group 42W, which configure a section of the stator 14. As a result, the rotor 12 rotates.

[0037] Here, the coil former 32 is configured to encompass the plurality of substrates 34 and the plurality of coil sections 16, each formed on the plurality of substrates 34. As a result of the plurality of substrates 34 being stacked in the axial direction, the plurality of coil sections 16 are arranged at predetermined positions in the circumferential and axial directions. In this configuration, an increase in the physical size of the coil former 32 in the axial direction can be suppressed compared to a configuration having a coil configured such that a winding is wound around teeth. Accordingly, an increase in the physical size of the motor 10 can be suppressed. (Configurations to ensure coil body strength 32)

[0038] Next, configurations according to the exemplary embodiments for ensuring a strength of the coil body 32 are described. (First embodiment)

[0039] The coil former 32 of a motor according to a first embodiment is described with reference to Fig. 9 and Fig. 10 described. In the motor according to the first embodiment, the elements and sections corresponding to those of the motor 10 described above are given the same reference numerals as the corresponding elements and sections of the motor 10 described above. Descriptions thereof may be omitted.

[0040] Fig. Figure 9 shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the first embodiment, and the plurality of coil sections 16 and the like formed on the substrate 34. As shown in the drawing, a reinforcing section 70 is formed in the coil former 32 according to the present embodiment to ensure the strength of the coil former 32 on the substrate 34.

[0041] Here, a region in which the coil section 16 (the magnetic field generating section 80) is formed in an intermediate section of the substrate 34 in the radial direction is referred to as a coil section formation region J1. Additionally, a region in an end section of the substrate 34 on the outer side in the radial direction, in which the coil section 16 (the magnetic field generating section 80) is not formed, is referred to as a first end section region J2. Furthermore, a region in an end section of the substrate 34 on the inner side in the radial direction, in which the coil section 16 (the magnetic field generating section 80) is not formed, is referred to as a second end section region J3.

[0042] As it is in Fig. 9 and Fig. As shown in Figure 10, the reinforcing section 70 is formed on each of surface 34A on one side and surface 34B on the other side in the first end section region J2 of the substrate 34. Additionally, the reinforcing section 70 is formed on each of surface 34A on one side and surface 34B on the other side in the second end section region J3 of the substrate 34. In other words, the reinforcing section 70 is formed only in the first end section region J2 and the second end section region J3 of the substrate 34. The reinforcing section 70 is not formed in the coil section formation region J1 of the substrate 34. Furthermore, the reinforcing section 70 formed in the first end section region J2 is continuous over its entire area in the circumferential direction.Similarly, the reinforcing section 70, which is formed in the second end section region J3, is continuous over its entire area in the circumferential direction. As a result, the reinforcing section 70, which is formed in the first end section region J2, and the reinforcing section 70, which is formed in the second end section region J3, have a ring-shaped form when viewed from the axial direction.

[0043] For example, the amplification section 70 can be formed using a copper material that is the same material as that of the coil section 16, which configures the magnetic field-generating section 80. According to the present embodiment, the amplification section 70 is formed on the substrate 34 when the magnetic field-generating section 80 is formed on the substrate 34. In this case, for example, the magnetic field-generating section 80 and the amplification section 70 can be formed into a predetermined pattern by subjecting them to a process called etching. A thickness dimension t1 of the amplification section 70 is set to be the same dimension as a thickness dimension t2 of the magnetic field-generating section 80. Additionally, according to the present embodiment, the amplification section 70 and the magnetic field-generating section 80 are configured not to be electrically connected to each other.

[0044] In the coil former 32 of the motor according to the present embodiment described above, the configuration is such that the first end section region J2 and the second end section region J3 of each substrate 34 are reinforced by the reinforcing sections 70. As a result, the strength of the coil former 32 is ensured compared to a configuration in which the reinforcing section 70 is not provided. Additionally, the stiffness of the coil former 32 can be ensured. Furthermore, the annular shape of the coil former 32 can be maintained with high accuracy. Moreover, excessive weight gain can be suppressed by the configuration in which the reinforcing section 70 is not formed in the coil section formation region J1.

[0045] Additionally, according to the present embodiment, deformation of the first end section region J2 and the second end section region J3 of the substrate 34 can be suppressed when the first end section region J2 and the second end section region J3 of the substrate 34 are gripped by a robot or the like during assembly of the coil former 32 and the like. As a result, the handling of the substrate 34 during a manufacturing process of the coil former 32 can be positively influenced. Furthermore, because only the section of the substrate 34 that is reinforced by the reinforcement sections 70 is gripped by a robot or the like, contact between the robot or the like with the magnetic field generation section 80 can be prevented or suppressed.

[0046] In addition, according to the present embodiment, the thickness t1 of the amplification section 70 is set to the same dimension as the thickness t2 of the magnetic field generation section 80. As a result, the amplification section 70 can prevent a reduction in the free space between the magnetic field generation section 80 formed on one substrate 34 and the magnetic field generation section 80 formed on another substrate 34, which are adjacent to each other in the axial direction. Consequently, a decrease in the volumetric efficiency of the coil former 32 due to the amplification section 70 can be suppressed. A configuration in which the thickness t1 of the amplification section 70 is set to a smaller dimension than the thickness t2 of the magnetic field generation section 80 is also possible.The thickness dimension of the reinforcement section 70 can be adjusted appropriately, taking into account the strength, stiffness and the like required by the coil former 32. (Second example)

[0047] The coil former 32 of a motor according to a second embodiment is described with reference to Fig. 11 and Fig. 12. Here, the elements and sections corresponding to those of the motor 10 described above and the motor according to the first embodiment are given the same reference numerals as the corresponding elements and sections of the motor 10 described above, and the like. Descriptions thereof may be omitted.

[0048] Fig. 11 and Fig. Figure 12 schematically shows a single substrate 34, which configures a section of a coil former 32 of the motor according to the second embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the reinforcing section 70 for ensuring the strength of the coil former 32 is formed on each of the surface 34A on one side and the surface 34B on the other side in the first end section region J2 of the substrate 34. In other words, the reinforcing section 70 is formed only in the first end section region J2 of the substrate 34. The reinforcing section 70 is not formed in the coil section formation region J1 of the substrate 34.Even in the configuration according to the present embodiment, the strength and stiffness of the coil former 32 can be ensured in comparison with a configuration in which the reinforcement section 70 is not provided. (Third embodiment)

[0049] The coil former 32 of a motor according to a third embodiment is described with reference to Fig. 13 and Fig. 14. In the motor according to the third embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0050] Fig. 13 and Fig. Figure 14 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the third embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the reinforcing section 70 for ensuring the strength of the coil former 32 is formed on each of the surface 34A on one side and the surface 34B on the other side in the second end section region J3 of the substrate 34. In other words, the reinforcing section 70 is formed only in the second end section region J3 of the substrate 34. The reinforcing section 70 is not formed in the coil section formation region J1 of the substrate 34.Even in the configuration according to the present embodiment, the strength and stiffness of the coil former 32 can be ensured in comparison to a configuration in which the reinforcement section 70 is not provided. (Fourth example)

[0051] An engine 90 according to a fourth embodiment is described with reference to Fig. 15. Here, the elements and sections corresponding to those of the motor 10 described above and the motors according to the exemplary embodiments are given the same reference numerals as the corresponding elements and sections of the motor 10 described above, and the like. Descriptions thereof may be omitted.

[0052] As it is in Fig. As shown in Figure 15, the motor 90 according to the present embodiment is a motor (hereinafter referred to as a "single-gap motor") configured such that the magnet 18 of the rotor 12 is arranged only on one side in the axial direction with respect to the stator 14 in a manner similar to the motor 10 described above. Additionally, the configuration of the coil former 32 of the motor 90 according to the present embodiment is similar to the configuration of the coil former 32 of the motor according to the first embodiment described above. Furthermore, the coil former 32 according to the present embodiment has a configuration in which two substrates 34 are stacked.

[0053] In the motor 90 according to the present embodiment, the magnetic field generating section 80, which is formed on each substrate 34, is arranged in the same position in the radial direction as the magnet 18 of the rotor 12. That is, the configuration is such that the magnetic field generating section 80, which is formed on each substrate 34, is arranged on an extension of the magnet 18 of the rotor 12 in the axial direction. Additionally, the configuration is such that the amplification section 70, which is formed on each substrate 34, is arranged in a position that is offset in the radial direction with respect to the magnet 18 of the rotor 12. That is, the amplification section 70, which is formed on each substrate 34, is not positioned on the extension of the magnet 18 of the rotor 12 in the axial direction.As a result, in the motor 90 according to the present embodiment, an eddy current loss, which accompanies a leakage magnetic flux from the magnet 18 to the amplification section 70, can be suppressed compared to a configuration in which the amplification section 70, formed on each substrate 34, is arranged on the extension of the magnet 18 of the rotor 12 in the axial direction. Accordingly, the efficiency of the motor 90 can be increased. (Fifth example)

[0054] An engine 92 according to a fifth embodiment is described with reference to Fig. 16. In the motor 90 according to the fifth embodiment, the elements and sections corresponding to those of the motor 10 described above and the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of the motor 10 described above, and the like. Descriptions thereof may be omitted.

[0055] As it is in Fig. As shown in Figure 16, the motor 92 according to the present embodiment is a motor (hereinafter referred to as a "double-gap motor") configured such that the magnet 18 of the rotor 12 is arranged on each of the two sides in the axial direction with respect to the stator 14. Additionally, the configuration of the coil former 32 of the motor 92 according to the present embodiment is similar to the configuration of the coil former 32 of the motor according to the first embodiment described above. Furthermore, the configuration of the stator 14 of the motor 92 according to the present embodiment is such that two substrates 34 are stacked on one side in the axial direction with respect to the stator core 26, and two substrates are stacked on the other side in the axial direction with respect to the stator core 26.

[0056] In the motor 92 according to the present embodiment, a gain section 70 is configured on each substrate 34 in a manner similar to that of the motor 90 according to the fourth embodiment, but is not positioned on the extension of the magnet 18 of the rotor 12 in the axial direction. As a result, in the motor 92 according to the present embodiment, an eddy current loss, which accompanies a leakage magnetic flux from the magnet 18 to the gain section 70, can be suppressed compared to a configuration in which the gain section 70, formed on each substrate 34, is arranged on the extension of the magnet 18 of the rotor 12 in the axial direction. Accordingly, the efficiency of the motor 92 can be increased. (Sixth embodiment example)

[0057] The coil former 32 of the motor according to a sixth embodiment is described with reference to Fig. 17 and Fig. 18. In the motor according to the sixth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0058] Fig. 17 and Fig. Figure 18 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the sixth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the reinforcing section 70 is formed on one side of the first end section region J2 of the substrate 34 to ensure the strength of the coil former 32. That is, the reinforcing section 70 is formed only on one surface on one side in the first end section region J2 of the substrate 34. Even in the configuration according to the present embodiment, the strength and stiffness of the coil former 32 can be ensured compared to a configuration in which the reinforcing section 70 is not provided. (Seventh example)

[0059] The coil former 32 of a motor according to a seventh embodiment is described with reference to Fig. 19. In the motor according to the seventh embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0060] Fig. Figure 19 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the seventh embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the amplifying section 70 is formed on each of the surfaces 34A on one side in the first end section region J2 of the substrate and on each of the surfaces 34A on one side in the second end section region J3. The amplifying section 70 formed in the first end section region J2 is interrupted at four positions in the circumferential direction. Additionally, the amplifying section 70 formed in the second end section region J3 is interrupted at four positions in the circumferential direction.The reinforcing section 70, which is formed in the first end section region J2, can also be considered as being configured to be divided into four reinforcing section parts 70A. The reinforcing section 70, which is formed in the second end section region J3, can likewise be considered as being configured to be divided into four reinforcing section parts 70A. The four reinforcing section parts 70A, which are formed in the first end section region J2, are arranged at equal intervals in the circumferential direction. The four reinforcing parts 70A, which are formed in the second end section region J3, are likewise arranged at equal intervals in the circumferential direction.Furthermore, the positions in the circumferential direction of the four reinforcement section parts 70A, which are formed in the first end section region J2, are offset by 45° in the circumferential direction with respect to the circumferential positions of the four reinforcement section parts 70A, which are formed in the second end section region J3.

[0061] Even in the configuration according to the present embodiment described above, the strength and stiffness of the coil former 32 can be ensured compared to a configuration in which the reinforcing section 70 is not provided. Additionally, according to the present embodiment, the reinforcing section 70 formed in the first end section region J2 is configured to be divided into four reinforcing section parts 70A, and the reinforcing section 70 formed in the second end section region J3 is also configured to be divided into four reinforcing section parts 70A.As a result, the leakage magnetic flux from magnet 18 to the side of the reinforcement section 70 can be reduced compared to a configuration where the reinforcement section 70 formed in the first end section region J2 and the reinforcement section 70 formed in the second end section region J3 are not divided circumferentially. Consequently, the eddy current loss that accompanies a leakage magnetic flux from magnet 18 to the side of the reinforcement section 70 can be suppressed. Accordingly, the efficiency of the motor can be increased. (Eighth example)

[0062] The coil former 32 of a motor according to an eighth embodiment is described with reference to Fig. 20. In the motor according to the eighth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0063] Fig. Figure 20 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the eighth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the amplification section 70 is formed on each of the surfaces 34A on one side in the first end-section region J2 of the substrate, and on the surface 34A on one side in the second end-section region J3. A section of the amplification section 70 formed in the second end-section region J3 is interrupted at a position in the circumferential direction. In addition, the amplification section 70 formed in the second end-section region J3 is continuous over the entire surface in the circumferential direction.As a result, the amplifying section 70 formed in the first end section region J2 has a C-shape when viewed from the axial direction, while the amplifying section 70 formed in the second end section region J3 has an annular shape when viewed from the axial direction. In section J4, where the amplifying section 70 is interrupted circumferentially in the first end section region J2, various wires 94 connected to the magnetic field generating section 80 are guided outwards in the radial direction. In this way, according to the present embodiment, interference between the amplifying section 70 and the guidance of the various wires 94 can be suppressed. (Ninth example)

[0064] The coil former 32 of a motor according to a ninth embodiment is described with reference to Fig. 21. In the motor according to the ninth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0065] Fig. Figure 21 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the ninth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the amplifying section 70 is formed on each of the surfaces 34A on one side in the first end-section region J2 of the substrate and on one side in the second end-section region J3. A section of the amplifying section 70 formed in the first end-section region J2 is continuous over the entire surface in the circumferential direction. In addition, the amplifying section 70 formed in the second end-section region J3 is interrupted at a position in the circumferential direction.As a result, the amplifying section 70 formed in the first end section region J2 has an annular shape when viewed from the axial direction, while the amplifying section 70 formed in the second end section region J3 has a C-shape when viewed from the axial direction. In section J5, where the amplifying section 70 is interrupted circumferentially in the second end section region J3, the various wires 94 connected to the magnetic field generating section 80 are guided inwards in the radial direction. In this way, the amplifying section 70 is prevented from interfering with the guidance of the various wires 94. (Tenth example)

[0066] The coil former 32 of a motor according to a tenth embodiment is described with reference to Fig. 22. In the motor according to the tenth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0067] Fig. Figure 22 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the tenth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the amplifying section 70 is formed on each of the surfaces 34A on one side in the first end section region J2 of the substrate and on each of the surfaces 34A on one side in the second end section region J3. The amplifying section 70 formed in the first end section region J2 is interrupted at three positions in the circumferential direction. Additionally, the amplifying section 70 formed in the second end section region J3 is interrupted at three positions in the circumferential direction.The reinforcing section 70, which is formed in the first end section region J2, can also be considered as being configured to be divided into three reinforcing section parts 70A. The reinforcing section 70, which is formed in the second end section region J3, can likewise be considered as being configured to be divided into three reinforcing section parts 70A. The three reinforcing section parts 70A, which are formed in the first end section region J2, are arranged at equal intervals in the circumferential direction. The three reinforcing section parts 70A, which are formed in the second end section region J3, are also arranged at equal intervals in the circumferential direction.Furthermore, the positions in the circumferential direction of the three reinforcement section parts 70A, which are formed in the first end section region J2, are each offset by 60° in the circumferential direction with respect to the positions in the circumferential direction of the three reinforcement section parts 70A, which are formed in the second end section region J3.

[0068] Additionally, the various wires 94 connected to the magnetic field generation section 80 are guided outwards in the radial direction between the reinforcing elements 70A, which are adjacent to each other in the circumferential direction in the first end section region J2. According to the present embodiment, the various wires 94 are guided outwards in the radial direction at three positions in the first end section region J2. Furthermore, the various wires 94 connected to the magnetic field generation section 80 are guided inwards in the radial direction between the reinforcing elements 70A, which are adjacent to each other in the circumferential direction in the second end section region J3. According to the present embodiment, the various wires 94 are guided inwards in the radial direction at three positions in the second end section region J3.In this way, according to the present embodiment, it can be suppressed that the reinforcing section 70 interferes with the guidance of the various wires 94. (Eleventh example)

[0069] The coil former 32 of a motor according to an eleventh embodiment is described with reference to Fig. 23. In the motor according to the eleventh embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0070] Fig. Figure 23 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the eleventh embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the amplifying section 70 is formed on each of the surfaces 34A on one side in the first end section region J2 of the substrate and on each of the surfaces 34A on one side in the second end section region J3. The amplifying section 70 formed in the first end section region J2 is continuous over the entire surface in the circumferential direction. Additionally, the amplifying section 70 formed in the second end section region J3 is continuous over the entire surface in the circumferential direction.Here, the reinforcing section 70 in the first end section region J2 is divided into three parts in the radial direction by two slots 96. The reinforcing section 70 in the second end section region J3 is likewise divided into three parts in the radial direction by two slots 96.

[0071] Even in the configuration according to the present embodiment described above, the strength and stiffness of the coil former 32 can be ensured compared to a configuration in which the reinforcing section 70 is not provided. Additionally, according to the present embodiment, the reinforcing section 70 formed in the first end section region J2 is configured to be divided radially by the slots 96, and the reinforcing section 70 formed in the second end section region J3 is also configured to be divided radially by the slots 96.As a result, the leakage magnetic flux from magnet 18 to the side of the reinforcement section 70 can be reduced compared to a configuration where the reinforcement section 70 formed in the first end section region J2 and the reinforcement section 70 formed in the second end section region J3 are not divided in the radial direction. Consequently, the eddy current loss that accompanies a leakage magnetic flux from magnet 18 to the side of the reinforcement section 70 can be suppressed. Accordingly, the efficiency of the motor can be increased. (Twelfth example)

[0072] The coil former 12 of a motor according to a twelfth embodiment is described with reference to Fig. 24. In the motor according to the twelfth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0073] Fig. Figure 24 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the twelfth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, in the coil former 32 according to the present embodiment, the amplifying section 70 is formed on each of the surfaces 34A on one side in the first end section region J2 of the substrate and on each of the surfaces 34A on one side in the second end section region J3. The amplifying section 70 formed in the first end section region J2 is continuous over the entire surface in the circumferential direction. Additionally, the amplifying section 70 formed in the second end section region J3 is continuous over the entire surface in the circumferential direction.In this process, the reinforcement section 70 in the first end section region J2 and the reinforcement section 70 in the second end section region J3 are each formed using a steel material.

[0074] In the coil former 32 of the motor according to the present embodiment described above, the strength and stiffness of the coil former 32 can be improved compared to a configuration in which the reinforcement section 70 in the first end section region J2 and the reinforcement section 70 in the second end section region J3 are formed using a copper material. (Thirteenth embodiment)

[0075] The coil former 32 of a motor according to a thirteenth embodiment is described with reference to Fig. 25. In the motor according to the thirteenth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0076] Fig. Figure 25 schematically shows a single substrate 34, which configures a section of the motor coil former 32 according to the thirteenth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, the motor coil former 32 according to the present embodiment is configured in a manner similar to the motor coil former 32 according to the twelfth embodiment described above, except for the reinforcement section 70 formed in the first end section region J2 and the reinforcement section 70 formed in the second end section region J3, which are formed using a resin material.

[0077] In the coil former 32 of the motor according to the present embodiment described above, a weight reduction of the coil former 32 can be achieved compared to a configuration in which the reinforcement section 70 in the first end section region J2 and the reinforcement section 70 in the second end section region J3 are formed using a copper material or a steel material. (Fourteenth example)

[0078] The coil former 32 of a motor according to a fourteenth embodiment is described with reference to Fig. 26 and Fig. 27. In the motor according to the fourteenth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0079] Fig. Figure 26 schematically shows a section of a single substrate 34 that configures a section of the coil former 32 of the motor according to the fourteenth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, the coil former 32 of the motor according to the present embodiment is configured in a manner similar to the coil former 32 of the motor according to the sixth embodiment described above, except for points described below.

[0080] In a central section of the first end section region J2 in the radial direction and in a central section of the reinforcement section 70 in the radial direction, an engagement section 98 is formed, which extends through both in the axial direction. According to the present embodiment, the engagement section 98 is a circular opening that extends through the first end section region J2 and the reinforcement section 70 in the axial direction. In this embodiment, four engagement sections 98 are formed in a single substrate 34 and the reinforcement section 70, which is formed on the substrate 34. Additionally, the four engagement sections 98 are arranged at equal intervals in the circumferential direction.

[0081] Fig. Figure 27 shows four mounting frames 100. The four mounting frames 100 are in the form of round rods and are fixed to a base (not shown) in a state where they are arranged at equal intervals in the circumferential direction. The plurality of substrates 34 are then stacked while the four mounting frames 100 are each inserted into the four engagement sections 98 formed in the first end section region J2 of the substrate 34 and the reinforcement section 70. In this way, according to the present embodiment, the coil former 32 can be assembled using the four mounting frames 100. As a result, according to the present embodiment, compared to a manufacturing process in which the four mounting frames 100 are not used, positional accuracy of one substrate 34 relative to another substrate 34 can be easily ensured.In addition, according to the present embodiment, an edge section of the engagement section 98 serves as an opening edge section of the substrate 34 and an opening edge section of the reinforcement section 70. This configuration is such that the opening edge section of the substrate 34 is reinforced by a reinforcement section. As a result, deformation of the opening edge section of the substrate 34 by the opening edge section of the substrate 34 that comes into contact with the mounting frame 100 can be suppressed.

[0082] The example described above illustrates an instance where the intervention section 98 is a circular opening. However, the present disclosure is not limited to this. For example, as described in Fig. As shown in Figure 28, the intervention section 98 can be configured such that the respective outer peripheral sections of the first end section region J2 and the reinforcement section 70 are cut out in a rectangular shape. Additionally, as shown in Fig. As shown in Figure 29, the intervention section 98 can be configured such that the respective outer peripheral sections of the first end section region J2 and the reinforcement section 70 are cut out in a triangular shape. Furthermore, as shown in Fig. As shown in Figure 30, the engagement section 98 is configured such that the respective outer peripheral sections of the first end section region J2 and the reinforcement section 70 are cut out in a semicircular shape. The configuration of the engagement section 98 can be adjusted appropriately, taking into account the configuration of the mounting frame 100 and the like. Likewise, a section of an element that configures the motor, such as a section of the stator core 26, can engage with the engagement section 98.

[0083] In addition, examples corresponding to the seventh to fourteenth embodiments described above are described in which the reinforcing section 70 is formed only on one surface on one side of the substrate 34. However, the present disclosure is not limited to this. The configurations corresponding to the seventh to fourteenth embodiments described above can also be applied to a configuration in which the reinforcing sections 70 are formed on both surfaces of the substrate 34. (Fifteenth example)

[0084] The coil former 32 of a motor according to a fifteenth embodiment is described with reference to Fig. 31 and Fig. 32. In the motor according to the fifteenth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0085] Fig. 31 and Fig. Figure 32 schematically shows the coil former 32 of the motor according to the fifteenth embodiment. As shown in the drawing, the coil former 32 of the motor according to the present embodiment is configured in a manner similar to the coil former 32 of the motor according to the second embodiment described above, except for points described below.

[0086] Eight fitting projection sections 102, projecting axially to one side, are formed in the reinforcement section 70, which is formed on surface 34A on one side in the first end section region J2 of the substrate 34. These eight fitting projection sections 102 are arranged at equal intervals along the circumferential direction. Additionally, eight fitting recess sections 104, open axially on the other side, are formed in the reinforcement section 70, which is formed on surface 34B on the other side in the first end section region J2 of the substrate 34. These eight fitting recess sections 104 are arranged at equal intervals along the circumferential direction and are located at the same positions circumferentially and radially as the eight fitting projection sections 102.As an example, the fitting projection section 102 and the fitting recess section 104 can be formed by punching after the reinforcement sections 107 have been formed on both surfaces in the axial direction in the first end section region J2 of the substrate 34.

[0087] The substrates 34 of the layers are then stacked in the axial direction in a state where the fitting projection section 102, formed in the reinforcement section 70 of one substrate 34, is fitted into the fitting recess section 104, formed in the reinforcement section 70 of the other substrate 34. As a result, positional accuracy of the other substrate 34 relative to the first substrate 34 can be easily ensured.

[0088] The present embodiment describes an example in which the fitting projection section 102 and the fitting recess section 104 are formed in the reinforcement section 70 in the first end section region J2 of the substrate 34. However, the present disclosure is not limited to this. For example, the configuration can be such that the fitting projection section 102 and the fitting recess section 104 are formed in the reinforcement section 70 in the second end section region J3 of the substrate 34.However, an angular change in the circumferential direction of the fitting projection section 102 and the fitting recess section 104 with respect to a displacement amount (a distance) of the fitting projection section 102 and the fitting recess section 104 in the circumferential direction is smaller if the configuration is such that the fitting projection section 102 and the fitting recess section 104 are formed in the reinforcement section 70 in the first end section region J2 of the substrate 34 than if the configuration is such that the fitting projection section 102 and the fitting recess section 104 are formed in the reinforcement section 70 in the second end section region J3 of the substrate 34.Consequently, from the standpoint of simply ensuring positional accuracy in the circumferential direction of the other substrate 34 with respect to the one substrate 34, the configuration in which the fitting projection section 102 and the fitting recess section 104 are formed in the reinforcement section 70 in the first end section region J2 of the substrate 34 is more advantageous than the configuration in which the fitting projection section 102 and the fitting recess section 104 are formed in the reinforcement section 70 in the second end section region J3 of the substrate 34. (Sixteenth example)

[0089] The coil former 32 of a motor according to a sixteenth embodiment is described with reference to Fig. 33. In the motor according to the sixteenth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0090] Fig. Figure 33 schematically shows a single substrate 34, which configures a section of the coil former 32 of the motor according to the sixteenth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, according to the present embodiment, an end section 70B on the side of the magnetic field generating section 80 of the amplifying section 70, which is formed on the surface 34A on one side of the substrate 34, and an end section 80A on the side of the amplifying section 70 of the magnetic field generating section 80, which is formed on the surface 34A on one side of the substrate 34, overlap in the axial direction.Additionally, the end section 70B overlaps on the side of the magnetic field generating section 80 of the amplifying section 70, which is formed on the surface 34B on the other side of the substrate 34, and the end section 80A overlaps on the side of the amplifying section 70 of the magnetic field generating section 80, which is formed on the surface 34B on the other side of the substrate, in the axial direction. Even in the configuration according to the present embodiment, the strength and stiffness of the coil former 32 can be ensured compared to a configuration in which the amplifying section 70 is not provided. (Seventeenth example)

[0091] The coil former 32 of a motor according to a seventeenth embodiment is described with reference to Fig. 34 to Fig. 36. In the motor according to the seventeenth embodiment, the elements and sections corresponding to those of the motor 10 described above and the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of the motor 10 described above, and the like. Descriptions thereof may be omitted.

[0092] Fig. Figure 34 schematically shows a single substrate 34 that configures a section of the coil former 32 of the motor according to the seventeenth embodiment, and the magnetic field generating section 80 formed on the substrate 34, and the like. As shown in the drawing, the coil former 32 of the motor according to the present embodiment is configured in a manner similar to the coil former 32 of the motor according to the second embodiment described above, except for points described below.

[0093] As it is in Fig. 35 and Fig. As shown in Figure 36, according to the present embodiment, an outer peripheral end section 34C in the first end section region J2 of the substrate 34 and an outer peripheral end section 70C of the reinforcement section 70 are cut out and removed by a punch 108 in a state in which the substrate 34 is inserted into a press mold 106. As a result, as shown in Fig. 34 and Fig. Figure 36 shows an outer peripheral end 34G in the first end section region J2 of the substrate 34 and an outer peripheral end 70D of the amplification section 70 aligned with each other. Here, in Fig. 34 sections that are cut and removed by the punch 108 (the outer peripheral end section 34C in the first end section region J2 of the substrate 34 and the outer peripheral end section 70C of the reinforcement section 70) are shown by dashed lines.

[0094] According to the present embodiment described above, deformation of the outer peripheral end 34D in the first end section region J2 of the substrate 34 can be suppressed by ensuring that the outer peripheral end section 34C in the first end section region J2 of the substrate 34 and the outer peripheral end section 70C of the reinforcement section 70 are aligned with each other.

[0095] Herein, an example is described in accordance with the embodiments described above, in which the shape of an outer edge of the substrate 34 is circular. However, the present disclosure is not limited to this. For example, as described in Fig. As shown in Figure 37, the configuration can be such that the shape of the outer edge of the substrate 34 is rectangular. Likewise, as shown in Fig. As shown in Figure 38, the configuration can be such that the shape of the outer edge of the substrate 34 is hexagonal. Likewise, as shown in Fig. As shown in Figure 39, the configuration is such that the shape of the outer edge of the substrate 34 is dodecagonal. (Eighteenth example)

[0096] The coil former 32 of the motor according to an eighteenth embodiment is described with reference to Fig. 40. In the motor according to the eighteenth embodiment, the elements and sections corresponding to those of motor 10 described above and of the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0097] As it is in Fig. As shown in Figure 40, the amplification section 70 and the magnetic field generation section 80 are electrically connected in the coil former 32 of the motor according to the present embodiment. In this configuration, the amplification section 70 can function as a conductor path to the magnetic field generation section 80. (Nineteenth example)

[0098] The coil former 32 of a motor according to a nineteenth embodiment is described with reference to Fig. 41. In the motor according to the nineteenth embodiment, the elements and sections corresponding to those of motor 10 described above and the motors according to the embodiments are given the same reference numerals as the corresponding elements and sections of motor 10 described above, and the like. Descriptions thereof may be omitted.

[0099] As it is in Fig.As shown in Figure 41, according to the present embodiment, the thickness t1 of the amplification section 70 is set to a dimension that is smaller than the thickness t2 of the magnetic field generation section 80. Additionally, an insulating layer 110, formed using an insulating material, is formed on the surface of the amplification section 70 on a side opposite the substrate 34. The dimension obtained by adding the thickness t1 of the amplification section 70 and the thickness t3 of the insulating layer together is a dimension that is smaller than the thickness t2 of the magnetic field generation section 80.Even in the configuration according to the present embodiment described above, the strength and stiffness of the coil former 32 can be ensured in comparison to a configuration in which the reinforcement section 70 is not provided.

[0100] The embodiments of the present disclosure are described above. However, the present disclosure is not limited to what is described above and can, of course, be modified in various ways in addition to what is described above without departing from the spirit of the present disclosure. Furthermore, all or some of the configurations according to the embodiments described above can be combined with one another. For example, with regard to combinations of configurations according to the embodiments, the configurations can be selected appropriately based on an intended use of the motor 10 and the like. Moreover, the configurations of the motor 10 and the like can also be applied to a power generator or a power generating device.Furthermore, the configurations of the present disclosure can be applied to a rotor configured to encompass the coil body 32. [Additional notes][Additional note 1]

[0101] A coil body (32) comprising: a base element (34) formed in a shape extending in a radial direction using an insulating material and stacked in an axial direction; a magnetic field generating section (80) formed in the base element using a conductive material and generating a rotating magnetic field by being energized; and an amplification section (70) formed in a region different from a region in which the magnetic field generating section is formed on a surface of the base material facing in the axial direction. [Additional note 2]

[0102] The coil body according to supplementary note 1, in which: the reinforcement section is formed using a conductive material. [Additional note 3]

[0103] The coil body according to supplementary note 2, in which: the amplification section serves as a conduction path to the magnetic field generation section by electrically connecting the amplification section and the magnetic field generation section. [Additional note 4]

[0104] The coil body according to one of the additional notes 1 to 3, in which: a thickness dimension (t1) of the amplification section in the axial direction is set to a dimension that is less than or equal to a thickness dimension (t2) of the magnetic field generating section in the axial direction. [Additional note 5]

[0105] The coil former according to one of the additional instructions 1 to 4, in which: the amplification section is divided into at least one circumferential direction and the radial direction. [Additional note 6]

[0106] The coil former according to one of the supplementary notes 1 to 5, in which: an engagement section (98) in which the reinforcement section is an edge section is formed in a region in which the reinforcement section is formed in the base element of each layer. [Additional note 7]

[0107] The coil former according to one of the supplementary notes 1 to 6, in which: a fitting projection section (102) projecting to one side in the axial direction and a fitting recess section (104) open on another side in the axial direction are formed in the reinforcement section formed in the base element of each layer; and the base element of each layer is stacked in the axial direction in a state in which the fitting projection section formed in the reinforcement section of one base element is fitted into the fitting recess section formed in the reinforcement section of another base element. [Additional note 8]

[0108] An armature (14) comprising: the coil body according to one of the additional instructions 1 to 7. [Additional note 9]

[0109] A rotating electrical machine (10, 90, 92) comprising: one consisting of a stator (14) and a rotor (12) configured to include the armature according to Supplementary Note 8; and the other of the stator and rotor having a magnet (18) arranged opposite the coil body in the axial direction.

[0110] While the present disclosure has been described with reference to exemplary embodiments thereof, it is evident that the disclosure is not limited to these exemplary embodiments and constructions. The present disclosure is intended to cover various examples and modifications within the equivalence range. In addition, various combinations and configurations, as well as other combinations and configurations comprising more, less, or merely a single element thereof, are likewise within the spirit and scope of the present disclosure. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2023-103767

[0001] JP 2008-061357A

[0004]

Claims

[1] Coil former (32) comprising: a base element (34) formed in a shape extending in a radial direction using an insulating material and stacked in an axial direction; a magnetic field generating section (80) formed in the base element using a conductive material and generating a rotating magnetic field by being supplied with energy; and a reinforcement section (70) which is formed in a region different from a region in which the magnetic field generating section is formed on a surface of the base material looking in the axial direction. [2] Coil body according to claim 1, wherein: The reinforcement section is designed using a conductive material. [3] Coil body according to claim 2, wherein: The amplification section serves as a conduction path to the magnetic field generation section by electrically connecting the amplification section and the magnetic field generation section. [4] Coil body according to claim 1, wherein: a thickness dimension (t1) of the amplification section in the axial direction is set to a dimension that is less than or equal to a thickness dimension (t2) of the magnetic field generation section in the axial direction. [5] Coil body according to claim 1, wherein: the reinforcement section is divided into at least one circumferential direction and the radial direction. [6] Coil body according to claim 1, wherein: an intervention section (98) in which the reinforcement section is a boundary section is formed in a region in which the reinforcement section is formed in the base element of each layer. [7] Coil body according to claim 1, wherein: a fitting projection section (102) projecting on one side in the axial direction, and a fitting recess section (104) open on another side in the axial direction, in which the reinforcement section formed in the base element of each layer is formed; and the base element of each layer is stacked in the axial direction in a state in which the fitting projection section formed in the reinforcement section of one base element is fitted into the fitting recess section formed in the reinforcement section of another base element. [8] Anchor (14) with: the coil body according to one of claims 1 to 7. [9] Rotating electric machine (10, 90, 92) with: a stator (14) and a rotor (12) configured to include the armature according to claim 8; and the other of the stator and the rotor, which has a magnet (18) arranged opposite the coil body in the axial direction.

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