Motor

Abstract

To obtain a motor capable of improving efficiency of manufacturing the motor.SOLUTION: A motor includes a stator 1 and a plurality of substrates 2. The plurality of substrates 2 are provided on the stator 1. Further, the plurality of substrates 2 are disposed apart from each other when viewed in an axial direction. Each of the plurality of substrates 2 are formed in the same shape. Further, the plurality of substrates 2 are disposed on the same plane perpendicular to an axial direction D1. In addition, the plurality of substrates 2 are arranged in a single row in a circumferential direction D3. The stator 1 has a coil 13. Each of the plurality of substrates 2 is disposed such that at least part thereof overlaps the coil 13 when viewed in the axial direction D1. Further, the motor includes a lead wire 3 provided across a pair of substrates 2 adjacent to each other among the plurality of substrates 2. The pair of substrates 2 are electrically connected to each other via the lead wire 3.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a motor. [Background technology]

[0002] BACKGROUND ART Conventionally, a motor including a stator and a substrate provided on the stator has been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-275310 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the motor configuration described in Patent Document 1, the substrate is formed in an annular shape. As a result, the substrate is manufactured to correspond to the radial dimension of the stator. Therefore, when manufacturing multiple stators with different radial dimensions, multiple substrates with different shapes must be manufactured. As a result, there is a problem in that the motor manufacturing efficiency is low.

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a motor that can improve the efficiency of motor manufacturing. [Means for solving the problem]

[0006] A motor according to the present invention includes a stator and a plurality of substrates provided on the stator, the plurality of substrates being spaced apart from one another when viewed in the axial direction. In the motor according to the present invention, the plurality of substrates are formed to have the same shape. In the motor according to the present invention, the plurality of substrates are arranged on the same plane perpendicular to the axial direction. In the motor according to the present invention, the plurality of substrates are arranged in a line in the circumferential direction. In the motor according to the present invention, the stator has a plurality of coils, and each of the plurality of substrates is arranged so that at least a portion thereof overlaps the coil when viewed in the axial direction. In the motor according to the present invention, each of the plurality of substrates is arranged so as to overlap across a pair of coils adjacent to each other in the circumferential direction when viewed in the axial direction. The motor according to the present invention includes a lead wire provided across a pair of adjacent boards among a plurality of boards, and the pair of boards are electrically connected to each other via the lead wire. [Effects of the Invention]

[0007] According to the motor of the present invention, the efficiency of manufacturing the motor can be improved. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a plan view showing a motor according to a first embodiment. [Figure 2] FIG. 2 is a plan view showing a motor of a first comparative example. [Figure 3] FIG. 10 is a plan view showing a motor of a second comparative example. [Figure 4] 2 is a plan view showing a motor in which a substrate is provided on a stator having a different radial dimension from the stator in FIG. 1. [Figure 5] 5 is a plan view showing a motor in which a substrate is provided on a stator having a different radial dimension from the stator in FIG. 4. [Figure 6] FIG. 1 is a plan view showing a substrate formed in a quadrangular shape. [Figure 7] FIG. 1 is a plan view showing a substrate formed into an oval shape. [Figure 8] FIG. 2 is a plan view showing a substrate formed in a circular shape. [Figure 9] FIG. 1 is a plan view showing a substrate formed into a hexagonal shape. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 FIG. 1 is a plan view showing a motor according to a first embodiment. The motor according to the first embodiment includes a stator 1 and a rotor (not shown). The direction along the axis of the rotor is defined as the axial direction D1. The direction along the radius of a circle centered on the axis of the rotor in a plane perpendicular to the axis of the rotor is defined as the radial direction D2. The direction along the circumference of a circle centered on the axis of the rotor in a plane perpendicular to the axis of the rotor is defined as the circumferential direction D3.

[0010] The stator 1 includes a plurality of substrates 2 and a plurality of lead wires 3. In the motor according to the first embodiment, the number of substrates 2 is three and the number of lead wires 3 is five.

[0011] The stator 1 includes a stator core 11, a bobbin 12, and a plurality of coils 13. The stator core 11 is formed by laminating a plurality of electromagnetic steel sheets. The stator core 11 includes an annular core back and a plurality of teeth. In the motor according to the first embodiment, the number of teeth is nine.

[0012] The core back is arranged coaxially with the axis of the rotor. The teeth are arranged in a row in the circumferential direction D3. Each tooth is arranged to extend inward in the radial direction D2 from the inner peripheral surface of the core back.

[0013] The bobbin 12 is provided on the stator core 11. The bobbin 12 covers a part of the stator core 11. The bobbin 12 is made of insulating resin.

[0014] Each of the plurality of coils 13 is provided on the stator core 11 via a bobbin 12. The plurality of coils 13 is provided for each of the plurality of teeth. Each of the coils 13 is formed by winding a conducting wire around the corresponding tooth.

[0015] Each of the plurality of substrates 2 is provided on the stator 1. Specifically, each of the plurality of substrates 2 is provided on the bobbin 12. Furthermore, each of the plurality of substrates 2 is arranged so as to overlap the stator 1 when viewed in the axial direction D1. Furthermore, each of the plurality of substrates 2 is arranged so that at least a portion of it overlaps with the plurality of coils 13 when viewed in the axial direction D1.

[0016] Each of the multiple coils 13 includes a winding portion 131 wound around a tooth and a lead-out portion (not shown) drawn from the winding portion 131. Each of the multiple substrates 2 is connected to the lead-out portion of the coil 13 that overlaps the substrate 2 when viewed in the axial direction D1. This allows the length of the lead-out portion of the coil 13 to be shortened.

[0017] The substrates 2 are spaced apart from one another when viewed in the axial direction D1. This allows the distance between adjacent substrates 2 to be adjusted in accordance with the radial dimension D2 of each stator when manufacturing a plurality of stators having different radial dimensions D2.

[0018] The multiple substrates 2 are formed to have the same shape. Specifically, each of the multiple substrates 2 is formed to have an annular sector shape. The annular sector shape is the shape of an object formed by dividing an annular object into multiple parts in the circumferential direction D3 when viewed in the axial direction D1. The shape of the substrate 2 is the shape of the substrate 2 when viewed in the thickness direction of the substrate 2.

[0019] The substrates 2 are arranged spaced apart from one another on the same plane perpendicular to the axial direction D1. The substrates 2 are also arranged in a line in the circumferential direction D3. The substrates 2 are arranged so that the distance between them and the axis of the rotor is the same.

[0020] When viewed in the axial direction D1, each of the plurality of substrates 2 is disposed across a pair of coils 13 adjacent to each other in the circumferential direction D3.

[0021] Each of the plurality of lead wires 3 is provided across a pair of adjacent substrates 2 among the plurality of substrates 2.

[0022] Next, a procedure for assembling the motor according to the first embodiment will be described. First, the bobbin 12 is attached to the stator core 11, and then each of the plurality of coils 13 is attached to the stator core 11 via the bobbin 12. This completes the assembly of the stator 1. Alternatively, the plurality of coils 13 may be attached to the bobbin 12, and then the bobbin 12 may be attached to the stator core 11.

[0023] Thereafter, each of the plurality of substrates 2 is attached to a bobbin 12, and then the corresponding substrates 2 and coils 13 are electrically connected to each other. Thereafter, each of the plurality of lead wires 3 is electrically connected to the corresponding substrate 2. This completes the procedure for assembling the motor.

[0024] Fig. 2 is a plan view showing a motor of a first comparative example. Fig. 3 is a plan view showing a motor of a second comparative example. In each of the motors of the first and second comparative examples, the substrate 2A is formed in an annular shape.

[0025] The radial dimension D2 of the stator 1A in the motor of the first comparative example is smaller than the radial dimension D2 of the stator 1A in the motor of the second comparative example. In other words, the radial dimension D2 of each of the stators 1A shown in Figures 2 and 3 is different from each other. Therefore, the shapes of the substrates 2A shown in Figures 2 and 3 are different from each other.

[0026] Fig. 4 is a plan view showing a motor in which a substrate 2 is provided on a stator 1 whose dimension in the radial direction D2 is different from that of the stator 1 in Fig. 1. Fig. 5 is a plan view showing a motor in which a substrate 2 is provided on a stator 1 whose dimension in the radial direction D2 is different from that of the stator 1 in Fig. 4. Figs. 4 and 5 show a configuration in which the number of substrates 2 is six.

[0027] The dimensions of the stators 1 in the radial direction D2 shown in Figures 4 and 5 are different from each other. However, the shapes of the substrates 2 shown in Figures 4 and 5 are the same from each other. Therefore, in the motor according to embodiment 1, when manufacturing motors including stators 1 with different dimensions in the radial direction D2, substrates 2 with the same shape can be attached to the stators 1 with different dimensions in the radial direction D2.

[0028] As described above, the motor according to the first embodiment includes the stator 1 and a plurality of substrates 2. The plurality of substrates 2 are provided on the stator 1. The plurality of substrates 2 are spaced apart from one another when viewed in the axial direction D1. With this configuration, when manufacturing a plurality of stators 1 having different dimensions in the radial direction D2, the distance between adjacent substrates 2 can be adjusted to correspond to the dimensions of the respective stators 1 in the radial direction D2. This allows the use of a plurality of substrates 2 when manufacturing a plurality of stators 1 having different dimensions in the radial direction D2. Therefore, there is no need to manufacture dedicated substrates having different shapes corresponding to the respective stators 1. As a result, the efficiency of motor manufacturing can be improved.

[0029] Furthermore, in the motor according to the first embodiment, the plurality of substrates 2 are formed to have the same shape. This configuration makes it possible to reduce the number of types of substrates 2. This further improves the efficiency of motor manufacturing.

[0030] Furthermore, in the motor according to embodiment 1, the multiple substrates 2 are arranged on the same plane perpendicular to the axial direction D1. This configuration makes it possible to reduce the overall size of the multiple substrates 2 in the axial direction D1. This in turn makes it possible to reduce the size of the motor in the axial direction D1.

[0031] In the motor according to embodiment 1, the multiple substrates 2 are arranged in a line in the circumferential direction D3. With this configuration, the distances between the corresponding substrates 2 and the corresponding winding portions 131 of the coils 13 can be made uniform for the multiple substrates 2 and the multiple coils 13.

[0032] Furthermore, in the motor according to the first embodiment, the stator 1 has a plurality of coils 13. When viewed in the axial direction D1, each of the plurality of substrates 2 is arranged so that at least a portion of the substrates 2 overlaps with the coil 13. With this configuration, the distances between the corresponding substrates 2 and the winding portions 131 of the coils 13 can be made uniform. This allows the lengths of the lead-out portions of the coils 13 to be made uniform.

[0033] Furthermore, in the motor according to embodiment 1, each of the multiple substrates 2 is arranged, when viewed in the axial direction D1, so as to overlap a pair of coils 13 adjacent to each other in the circumferential direction D3. This configuration makes it possible to easily electrically connect a pair of adjacent coils 13 to one substrate 2.

[0034] The motor according to the first embodiment also includes lead wires 3. The lead wires 3 are provided across a pair of adjacent substrates 2 among the plurality of substrates 2. This configuration allows electrical connection between the pair of adjacent substrates 2.

[0035] In the motor according to the first embodiment, the configuration has been described in which each of the plurality of substrates 2 is formed in an annular sector shape. However, this configuration is not limited to this. Fig. 6 is a plan view showing a substrate 2 formed in a quadrangular shape. Fig. 7 is a plan view showing a substrate 2 formed in an elliptical shape. Fig. 8 is a plan view showing a substrate 2 formed in a circular shape. Fig. 9 is a plan view showing a substrate 2 formed in a hexagonal shape. Each of the plurality of substrates 2 may be formed in a quadrangular, elliptical, circular, or hexagonal shape, for example.

[0036] In addition, in the motor according to the first embodiment, the configuration has been described in which the multiple substrates 2 are formed in the same shape as each other. However, this configuration is not limited to this. For example, the configuration may be such that some of the multiple substrates 2 are formed in the same shape as each other.

[0037] Furthermore, in the motor according to the first embodiment, the multiple substrates 2 are arranged on the same plane perpendicular to the axial direction D1. However, this configuration is not limited to this. For example, the multiple substrates 2 may be arranged offset from one another in the axial direction D1. Furthermore, in the motor according to the first embodiment, the multiple substrates 2 are arranged along a plane perpendicular to the axial direction D1. However, this configuration is not limited to this. For example, at least one of the multiple substrates 2 may be arranged inclined with respect to the plane perpendicular to the axial direction D1. In this case, for example, the substrate 2 may be arranged inclined with respect to the plane perpendicular to the axial direction D1 so that the inner portion of the substrate 2 in the radial direction D2 is located closer to the inside of the axial direction D1, i.e., closer to the stator 1, than the outer portion.

[0038] Furthermore, in the motor according to the first embodiment, a configuration has been described in which the plurality of substrates 2 are arranged so that the distance between the substrates 2 and the rotor axis is the same. However, this configuration is not limited to this. For example, the plurality of substrates 2 may be arranged so that the distance between the substrates 2 and the rotor axis is different.

[0039] Furthermore, in the rotor according to the first embodiment, the configuration has been described in which each of the multiple substrates 2 is arranged to overlap a pair of coils 13 adjacent to each other in the circumferential direction D3 when viewed in the axial direction D1. However, this configuration is not limited thereto. A configuration in which at least one of the multiple substrates 2 is arranged to overlap only one coil 13 when viewed in the axial direction D1 may also be used.

[0040] Furthermore, in the motor according to the first embodiment, the multiple boards 2 are arranged at a distance from each other. However, this is not the only possible configuration. For example, some of the multiple boards 2 may be adjacent to each other.

[0041] Furthermore, in the motor according to the first embodiment, a configuration has been described in which each of the multiple lead wires 3 is provided across a pair of adjacent substrates 2 among the multiple substrates 2. However, this configuration is not limited to this. For example, a configuration in which at least one of the multiple lead wires 3 is provided across a pair of substrates 2 that are not adjacent to each other may also be used.

[0042] Although the motor according to the preferred embodiment 1 has been described above, the present invention is not limited to the motor according to the above-described embodiment 1. Various modifications and alterations can be made to the motor according to the above-described embodiment 1 without departing from the scope of the claims. [Explanation of symbols]

[0043] 1 stator, 2 substrate, 3 lead wire, 11 stator core, 12 bobbin, 13 coil, 131 winding section.

Claims

1. A stator (1), A plurality of substrates (2) provided on the stator (1); Equipped with The motor has a plurality of substrates (2) arranged at a distance from each other when viewed in the axial direction.

2. 2. The motor according to claim 1, wherein the plurality of substrates (2) are formed to have the same shape as each other.

3. 3. The motor according to claim 1, wherein the plurality of substrates (2) are arranged on the same plane perpendicular to the axial direction.

4. 3. The motor according to claim 1, wherein the plurality of substrates (2) are arranged in a line in the circumferential direction.

5. The stator (1) has a plurality of coils (13), 3. The motor according to claim 1, wherein each of the plurality of substrates (2) is arranged so that at least a portion thereof overlaps the coil (13) when viewed in the axial direction.

6. The motor according to claim 5, wherein each of the plurality of substrates (2) is arranged so as to overlap across a pair of the coils (13) adjacent to each other in the circumferential direction when viewed in the axial direction.

7. The device includes a lead wire (3) provided across a pair of adjacent substrates (2) among the plurality of substrates (2), 3. The motor according to claim 1, wherein the pair of substrates (2) are electrically connected to each other via the lead wires (3).

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