JP2024034726A - Coil substrates, motor coil substrates and motors - Google Patents

Abstract

The present invention provides a coil substrate that provides a motor with stable performance, a motor coil substrate formed using the coil substrate, and a motor formed using the motor coil substrate. A coil board according to an embodiment includes a flexible board having a first region on one longitudinal end side and a second region adjacent to the first region, and a first phase coil formed on the flexible board. It has a coil including a second phase coil and a third phase coil, and a first phase terminal, a second phase terminal, and a third phase terminal for connection to the outside. The first phase terminal is connected to the first phase coil and the third phase coil. A second phase terminal is connected to the second phase coil and the first phase coil. The third phase terminal is connected to the third phase coil and the second phase coil. The first phase terminal, the second phase terminal, and the third phase terminal are arranged within the first region. [Selection diagram] Figure 1

Description

The technology disclosed in this specification relates to a coil substrate, a motor coil substrate formed using the coil substrate, and a motor formed using the motor coil substrate.

Patent Document 1 discloses a coil board that includes a flexible substrate, a coil formed on the flexible substrate, and wiring for supplying current to the coil. The coils include a U-phase coil, a V-phase coil, and a W-phase coil. The wiring includes a U-phase wiring for supplying power to the U-phase coil, a V-phase wiring for supplying power to the V-phase coil, and a W-phase wiring for supplying power to the W-phase coil.

JP2022-61765A

[Issues of Patent Document 1]
The coil board of Patent Document 1 is considered to have wiring for connecting U-phase wiring, V-phase wiring, and W-phase wiring. It is thought that the difference in the length of the wiring for connecting each phase causes variations in the resistance between the phases.

One of the coil substrates of the present invention includes a flexible substrate having a first region on one longitudinal end side and a second region adjacent to the first region, and a first phase coil formed on the flexible substrate. It has a coil including a second phase coil and a third phase coil, and a first phase terminal, a second phase terminal, and a third phase terminal for connection to the outside. The first phase terminal is connected to the first phase coil and the third phase coil. A second phase terminal is connected to the second phase coil and the first phase coil. The third phase terminal is connected to the third phase coil and the second phase coil. The first phase terminal, the second phase terminal, and the third phase terminal are arranged within the first region.

In the coil substrate according to the embodiment of the present invention, the first phase terminal, the second phase terminal, and the third phase terminal are all arranged within the first region. Therefore, when the first phase coil, the second phase coil, and the third phase coil are connected, the lengths of the wiring can be made almost the same. Variations in resistance between phases can be reduced when the coil substrate is used as a motor coil.

Another coil board of the present invention includes a flexible board having a first region on one longitudinal end side and a second region adjacent to the first region, and a first phase formed on the flexible board. It has a coil including a coil, a second phase coil, and a third phase coil, and a first phase terminal, a second phase terminal, and a third phase terminal for connection to the outside. The first phase terminal is connected to the first phase coil and the third phase coil. The second phase terminal is connected to the second phase coil and the first phase coil. The third phase terminal is connected to the third phase coil and the second phase coil. The first phase terminal, the second phase terminal, and the third phase terminal are arranged in the second region.

In the coil board of the modified example of the embodiment of the present invention, the first phase terminal, the second phase terminal, and the third phase terminal are all arranged within the second region. Also in this case, the lengths of the wiring when the first phase coil, second phase coil, and third phase coil are connected can be made approximately the same. Variations in resistance between phases can be reduced when the coil substrate is used as a motor coil.

The motor coil substrate of the present invention is formed by winding the above-described coil substrate of the present invention along the longitudinal direction.

In the motor coil substrate according to the embodiment of the present invention, there is little variation in resistance between each phase. Therefore, when a motor is formed using the motor coil substrate of the embodiment, a motor with stable performance can be obtained.

The motor of the present invention is formed by arranging the motor coil substrate of the present invention described above inside a cylindrical yoke, and arranging a rotating shaft and a magnet inside the motor coil substrate.

In the motor according to the embodiment of the present invention, there is little variation in resistance between each phase. A motor with stable performance can be obtained.

FIG. 1 is a plan view schematically showing a coil substrate according to an embodiment. FIG. 1 is a cross-sectional view schematically showing a coil substrate according to an embodiment. FIG. 3 is a plan view schematically showing a U-phase coil in the coil board of the embodiment. FIG. 3 is a plan view schematically showing a V-phase coil in the coil board of the embodiment. FIG. 3 is a plan view schematically showing a W-phase coil in the coil board of the embodiment. FIG. 3 is a plan view comparing U-phase, V-phase, and W-phase of the coil substrate of the embodiment. FIG. 2 is an explanatory diagram showing a simplified coil board according to an embodiment. FIG. 1 is a perspective view schematically showing a motor coil board according to an embodiment. FIG. 3 is an explanatory diagram schematically showing the position of each terminal in the motor coil board of the embodiment. FIG. 1 is a cross-sectional view schematically showing a motor according to an embodiment. FIG. 7 is a plan view schematically showing a coil substrate of Modification Example 1. FIG. 7 is an explanatory diagram showing a simplified coil board of modification example 1.

[Embodiment]
FIG. 1 is a plan view showing a coil substrate 2 according to an embodiment. FIG. 2 is a sectional view taken along line II-II in FIG. 3A to 3C are plan views showing a U-phase coil 20U, a V-phase coil 20V, and a W-phase coil 20W, respectively. FIG. 4 is a plan view comparing the U phase, V phase, and W phase of the coil board 2. FIG. 5 is a simplified plan view of the coil substrate 2 of FIG. 1. As shown in FIG.

As shown in FIG. 1, the coil board 2 includes a flexible board 10, a U-phase coil 20U, a V-phase coil 20V, a W-phase coil 20W, a U-phase terminal 40U, a V-phase terminal 40V, and a W-phase coil. It has a terminal 40W, a plurality of inter-coil connection lines 50U, 50V, 50W, and a plurality of return lines 70U, 70V, 70W.

The flexible substrate 10 is a resin substrate having a first surface 10F and a second surface 10B opposite to the first surface 10F. The flexible substrate 10 is formed using an insulating resin such as polyimide or polyamide. The flexible substrate 10 has flexibility. The flexible substrate 10 is formed into a rectangular shape having four sides, a first side E1 to a fourth side E4. The first side E1 is a short side at one end of the flexible substrate 10 in the longitudinal direction (direction of arrow LD in FIG. 1). The second side E2 is the short side on the other end side in the longitudinal direction. Both the first side E1 and the second side E2 are short sides extending along a direction perpendicular to the longitudinal direction (direction of arrow OD in FIG. 1). Both the third side E3 and the fourth side E4 are long sides extending along the longitudinal direction. As will be explained in detail later, when the coil substrate 2 is wound into a cylindrical shape to form the motor coil substrate 550 (see FIG. 6), the first surface 10F is arranged on the inner circumferential side, and the second surface 10B is arranged on the outer peripheral side.

The flexible substrate 10 has a first region R1 on one end side (first side E1 side) in the longitudinal direction, and a second region R2 adjacent to the first region R1. The second region R2 includes a second side E2.

The U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are all formed on the third side E3 of the flexible substrate 10. In the embodiment, the U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are all arranged within the first region R1. As shown in FIG. 1, the U-phase terminal 40U is connected to the starting end 20US of the U-phase coil 20U. At the same time, the U-phase terminal 40U is connected to the terminal end 20WE of the W-phase coil 20W via a return line 70W. The V-phase terminal 40V is connected to the starting end 20VS of the V-phase coil 20V. At the same time, the V-phase terminal 40V is connected to the terminal end 20UE of the U-phase coil 20U via a return line 70U. The W-phase terminal 40W is connected to the starting end 20WS of the W-phase coil 20W. At the same time, the W-phase terminal 40W is connected to the terminal end 20VE of the V-phase coil 20V via a return line 70V. That is, in the embodiment, the U-phase coil 20U, the V-phase coil 20V, and the W-phase coil 20W are Δ-connected (see FIG. 5).

The U-phase coil 20U, the V-phase coil 20V, and the W-phase coil 20W constitute the U-phase, V-phase, and W-phase of the three-phase motor, respectively.

As shown in FIGS. 1, 3A, and 4, the starting end 20US of the U-phase coil 20U is arranged within the first region R1. A terminal end 20UE of the U-phase coil 20U is arranged within the second region R2. As shown in FIG. 3A, the U-phase coil 20U includes six coils 31U, 32U, 33U, 34U, 35U, and 36U. The six coils 31U to 36U are arranged in this order from the starting end 20US to the ending end 20UE (from the first region R1 to the second region R2) of the U-phase coil 20U. The six coils 31U to 36U are interconnected by an inter-coil connection line 50U.

In each of the six coils 31U to 36U, the wiring constituting a half turn of one turn is formed on the first surface 10F side, the wiring constituting the remaining half turn is formed on the second surface 10B side, and the wiring constituting the remaining half turn is formed on the second surface 10B side. It is formed by staggered arrangement of each turn.

The winding start positions (start ends) of the first coil 31U, third coil 33U, and fifth coil 35U from the start end 20US of the U-phase coil 20U are arranged on the first surface 10F, and the winding end positions (terminal ends) are arranged on the second surface 10F. It is arranged on the surface 10B. When the flexible substrate 10 is viewed from the first surface 10F side, the coils 31U, 33U, and 35U are wound counterclockwise.

On the other hand, the winding start position (start end) of the second coil 32U, fourth coil 34U, and sixth coil 36U from the start end 20US of the U-phase coil 20U is arranged on the second surface 10B, and the winding end position (terminal end) is It is arranged on the first surface 10F. When the flexible substrate 10 is viewed from the first surface 10F side, the coils 32U, 34U, and 36U are wound clockwise.

As shown in FIGS. 2, 3A, and 1, a portion of the wiring of the coil 31U overlaps a portion of the wiring of the adjacent coil 32U with the flexible substrate 10 in between. Similarly, a portion of the wiring of the coil 32U overlaps a portion of the wiring of the adjacent coil 33U. A part of the wiring of the coil 33U overlaps with a part of the wiring of the adjacent coil 34U. A portion of the wiring of the coil 34U overlaps with a portion of the wiring of the adjacent coil 35U. A portion of the wiring of the coil 35U overlaps with a portion of the wiring of the adjacent coil 36U.

As shown in FIG. 3A and FIG. 1, an inter-coil connection line 50U connects the coil 31U and the coil 32U, an inter-coil connection line 50U connects the coil 33U and the coil 34U, and a coil connects the coil 35U and the coil 36U. The connecting line 50U is arranged on the second surface 10B. On the other hand, an inter-coil connection line 50U that connects the coil 32U and the coil 33U, and an inter-coil connection line 50U that connects the coil 34U and the coil 35U are arranged on the first surface 10F. The U-phase terminal 40U and the return line 70U are arranged on the first surface 10F.

As shown in FIGS. 3A, 5, and 1, the return line 70U connects between the terminal end 20UE of the U-phase coil 20U and the V-phase terminal 40V. The return line 70U extends from the second region R2 to the first region R1.

As shown in FIGS. 1, 3B, and 4, the starting end 20VS of the V-phase coil 20V is arranged within the first region R1. A terminal end 20VE of the V-phase coil 20V is arranged within the second region R2. As shown in FIG. 3B, the V-phase coil 20V includes six coils 31V, 32V, 33V, 34V, 35V, and 36V. The six coils 31V to 36V are arranged in this order from the starting end 20VS to the ending end 20VE (from the first region R1 to the second region R2) of the V-phase coil 20V. The six coils 31V to 36V are connected to each other by an inter-coil connection wire of 50V.

In each of the six coils 31V to 36V, the wiring constituting a half turn of one turn is formed on the first surface 10F side, the wiring constituting the remaining half turn is formed on the second surface 10B side, and the wiring constituting the remaining half turn is formed on the second surface 10B side. It is formed by staggered arrangement of each turn.

The winding start position (starting end) of the first coil 31V, the third coil 33V, and the fifth coil 35V from the starting end 20VS of the V-phase coil 20V is arranged at the first surface 10F, and the winding end position (terminus) is located at the second It is arranged on the surface 10B. When the flexible substrate 10 is viewed from the first surface 10F side, the coils 31V, 33V, and 35V are wound counterclockwise.

On the other hand, the winding start positions (start ends) of the second coil 32V, the fourth coil 34V, and the sixth coil 36V from the start end 20VS of the V-phase coil 20V are arranged on the second surface 10B, and the winding end positions (terminal ends) are arranged on the second surface 10B. It is arranged on the first surface 10F. When the flexible substrate 10 is viewed from the first surface 10F side, the coils 32V, 34V, and 36V are wound clockwise.

As shown in FIGS. 2, 3B, and 1, a portion of the wiring of the coil 31V overlaps a portion of the wiring of the adjacent coil 32V with the flexible substrate 10 in between. Similarly, a portion of the wiring of the coil 32V overlaps a portion of the wiring of the adjacent coil 33V. A portion of the wiring of the coil 33V overlaps a portion of the wiring of the adjacent coil 34V. A portion of the wiring of the coil 34V overlaps a portion of the wiring of the adjacent coil 35V. A portion of the wiring for the coil 35V overlaps a portion of the wiring for the adjacent coil 36V.

As shown in FIG. 3B and FIG. 1, an inter-coil connection wire 50V connects the coil 31V and the coil 32V, an inter-coil connection wire 50V connects the coil 33V and the coil 34V, and a coil connects the coil 35V and the coil 36V. The connecting wire 50V is arranged on the second surface 10B. On the other hand, an inter-coil connection line 50V connecting the coil 32V and the coil 33V and an inter-coil connection line 50V connecting the coil 34V and the coil 35V are arranged on the first surface 10F. The V-phase terminal 40V and the return line 70V are arranged on the first surface 10F.

As shown in FIGS. 3B, 5, and 1, the return line 70V connects the terminal end 20VE of the V-phase coil 20V and the W-phase terminal 40W. The return line 70V extends from the second region R2 to the first region R1.

As shown in FIGS. 1, 3C, and 4, the starting end 20WS of the W-phase coil 20W is arranged within the first region R1. A terminal end 20WE of the W-phase coil 20W is arranged within the second region R2. As shown in FIG. 3C, the W-phase coil 20W includes six coils 31W, 32W, 33W, 34W, 35W, and 36W. The six coils 31W to 36W are arranged in this order from the starting end 20WS of the W-phase coil 20W toward the terminal end 20WE (from the first region R1 to the second region R2). The six coils 31W to 36W are connected to each other by an inter-coil connection wire 50W.

In each of the six coils 31W to 36W, the wiring constituting a half turn of one turn is formed on the first surface 10F side, the wiring constituting the remaining half turn is formed on the second surface 10B side, and the wiring constituting the remaining half turn is formed on the second surface 10B side. It is formed by staggered arrangement of each turn.

The winding start positions (start ends) of the first coil 31W, the third coil 33W, and the fifth coil 35W from the start end 20WS of the W-phase coil 20W are arranged on the first surface 10F, and the winding end positions (terminal ends) are arranged on the second surface 10F. It is arranged on the surface 10B. When the flexible substrate 10 is viewed from the first surface 10F side, the coils 31W, 33W, and 35W are wound counterclockwise.

On the other hand, the winding start positions (start ends) of the second coil 32W, fourth coil 34W, and sixth coil 36W from the start end 20WS of the W-phase coil 20W are arranged on the second surface 10B, and the winding end positions (terminal ends) are arranged on the second surface 10B. It is arranged on the first surface 10F. When the flexible substrate 10 is viewed from the first surface 10F side, the coils 32W, 34W, and 36W are wound clockwise.

As shown in FIGS. 2, 3C, and 1, a portion of the wiring of the coil 31W overlaps a portion of the wiring of the adjacent coil 32W with the flexible substrate 10 in between. Similarly, a portion of the wiring of the coil 32W overlaps a portion of the wiring of the adjacent coil 33W. A portion of the wiring of the coil 33W overlaps a portion of the wiring of the adjacent coil 34W. A portion of the wiring of the coil 34W overlaps a portion of the wiring of the adjacent coil 35W. A portion of the wiring of the coil 35W overlaps a portion of the wiring of the adjacent coil 36W.

As shown in FIG. 3C and FIG. 1, an inter-coil connection wire 50W connects the coil 31W and the coil 32W, an inter-coil connection wire 50W connects the coil 33W and the coil 34W, and a coil connects the coil 35W and the coil 36W. The connecting wire 50W is arranged on the second surface 10B. On the other hand, an inter-coil connection line 50W that connects the coil 32W and the coil 33W, and an inter-coil connection line 50W that connects the coil 34W and the coil 35W are arranged on the first surface 10F. The W-phase terminal 40W and the return line 70W are arranged on the first surface 10F.

As shown in FIGS. 3C, 5, and 1, the return wire 70W connects the terminal end 20WE of the W-phase coil 20W and the U-phase terminal 40U. The return line 70W extends from the second region R2 to the first region R1.

Although not shown, the first surface 10F and the wiring of each coil 20U, 20V, 20W formed on the first surface 10F, the inter-coil connection wires 50U, 50V, 50W, and the return wires 70U, 70V, 70W The top is covered with a resin insulation layer. Similarly, the second surface 10B and the wiring of each coil 20U, 20V, 20W formed on the second surface 10B and the inter-coil connection wires 50U, 50V, 50W are covered with a resin insulating layer.

FIG. 6 is a perspective view schematically showing a motor coil board 550 using the coil board 2 (FIGS. 1 to 5) of the embodiment. As shown in FIG. 6, a motor coil substrate 550 for a motor is formed by winding the coil substrate 2 of the embodiment (FIGS. 1 to 5) into a cylindrical shape. When the coil substrate 2 is wound into a cylindrical shape, it is wound multiple times around an axis extending in the orthogonal direction (an axis extending parallel to the first side E1) starting from the first side E1 (FIG. 1). Further, the number of times the coil substrate is wound is not particularly limited. When the coil substrate 2 is wound into a cylindrical shape, the first surface 10F of the flexible substrate 10 is arranged on the inner circumferential side, and the second surface 10B is arranged on the outer circumferential side.

FIG. 7 schematically shows the position of each terminal when the motor coil board 550 is viewed along the axial direction. As shown in FIG. 7, the U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are arranged at approximately 120° intervals in the circumferential direction. The U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are all arranged on the inner peripheral surface. Note that the intervals between the U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W may be other than the approximately 120° interval.

FIG. 8 is a cross-sectional view schematically showing a motor 600 using the motor coil substrate 550 (FIGS. 6 and 7) of the embodiment. The motor 600 is formed by arranging a motor coil board 550 inside a yoke 560, and arranging a rotating shaft 580 and a magnet 570 fixed to the rotating shaft 580 inside the motor coil board 550.

As described above, the configurations of the coil substrate 2 (FIGS. 1 to 5), the motor coil substrate 550 (FIGS. 6 and 7), and the motor 600 (FIG. 8) of the embodiment have been explained. As described above, in the coil board 2 of the embodiment, the U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are all arranged within the first region R1. Therefore, the return lines 70U, 70V, and 70W all extend from the second region R2 to the first region R1. The lengths of each return line 70U, 70V, and 70W can be made approximately the same. When the coil board 2 is used as the motor coil board 500, variations in resistance between each phase can be reduced. When the motor 600 is formed using the motor coil substrate 550 of the embodiment, the motor 600 with stable performance can be obtained.

The U-phase terminal 40U, V-phase terminal 40V, and W-phase terminal 40W of the embodiment are examples of a "first phase terminal," a "second phase terminal," and a "third phase terminal," respectively. The U-phase coil 20U, V-phase coil 20V, and W-phase coil 20W of the embodiment are examples of a "first phase coil," a "second phase coil," and a "third phase coil," respectively. Note that combinations of the U phase, V phase, and W phase may be applied in combinations other than those in the embodiment.

[Modification example 1 of embodiment]
9 and 10 show a first modification of the embodiment. FIG. 9 is a plan view showing the coil substrate 1002 of Modified Example 1. FIG. 10 is a simplified plan view of the coil substrate 1002 of FIG. 9. As shown in FIG. In modification example 1, the positions of the U-phase terminal 40U, V-phase terminal 40V, and W-phase terminal 40W are opposite to those in the embodiment. That is, the U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are all arranged in the second region R1.

A starting end 20US of the U-phase coil 20U is arranged within the second region R2. A terminal end 20UE of the U-phase coil 20U is arranged within the first region R1. The six coils 31U to 36U are arranged in this order from the starting end 20US to the ending end 20UE (from the second region R2 to the first region R1). Coils 31U, 33U, and 35U are wound clockwise. Coils 32U, 34U, and 36U are wound counterclockwise.

The starting end 20VS of the V-phase coil 20V is arranged within the second region R2. A terminal end 20VE of the V-phase coil 20V is arranged within the first region R1. The six coils 31V to 36V are arranged in this order from the starting end 20VS to the ending end 20VE of the V-phase coil 20V (from the second region R2 to the first region R1). Coils 31V, 33V, and 35V are wound clockwise. Coils 32V, 34V, and 36V are wound counterclockwise.

A starting end 20WS of the W-phase coil 20W is arranged within the second region R2. A terminal end 20WE of the W-phase coil 20W is arranged within the first region R1. The six coils 31W to 36W are arranged in this order from the starting end 20WS of the W-phase coil 20W toward the terminal end 20WE (from the second region R2 to the first region R1). Coils 31W, 33W, and 35W are wound clockwise. Coils 32W, 34W, and 36W are wound counterclockwise.

As shown in FIGS. 9 and 10, the return line 70U connects the terminal end 20UE of the U-phase coil 20U and the V-phase terminal 40V. The return line 70V connects between the terminal end 20VE of the V-phase coil 20V and the W-phase terminal 40W. The return line 70W connects the terminal end 20WE of the W-phase coil 20W and the U-phase terminal 40U. The return lines 70U, 70V, and 70W all extend from the first region R1 to the second region R2.

As described above, in the coil board 1002 of Modified Example 1, the U-phase terminal 40U, the V-phase terminal 40V, and the W-phase terminal 40W are all arranged within the second region R2. Therefore, the return lines 70U, 70V, and 70W all extend from the first region R1 to the second region R2. The lengths of each return line 70U, 70V, and 70W can be made approximately the same. When the coil board 2 is used as the motor coil board 500, variations in resistance between each phase can be reduced. When the motor 600 is formed using the motor coil substrate 550 of the embodiment, the motor 600 with stable performance can be obtained.

The V-phase terminal 40V, W-phase terminal 40W, and U-phase terminal 40U of Modified Example 1 are examples of the "first phase terminal," "second phase terminal," and "third phase terminal," respectively. The V-phase coil 20V, W-phase coil 20W, and U-phase coil 20U of Modified Example 1 are examples of the "first phase coil," "second phase coil," and "third phase coil," respectively. Note that combinations of the U phase, V phase, and W phase other than Modification Example 1 can also be applied.

[Modification example 2 of embodiment]
Although not shown in the drawings, in Modified Example 2, the arrangement of the wiring constituting each of the coils 31U to 36U, 31V to 36V, and 31W to 36W is different from the embodiment. Also in Modified Example 2, each coil includes a coil-shaped wiring (first wiring) provided on the first surface 10F and a coil-shaped wiring (second wiring) provided on the second surface 10B. The first wiring and the second wiring are electrically connected via a via conductor that penetrates the flexible substrate 10. The first wiring is formed in a spiral shape (hexagonal spiral shape) from the outer circumference toward the inner circumference. The via conductor is formed at the inner peripheral end of the first wiring. On the other hand, the second wiring is formed in a spiral shape (hexagonal spiral shape) from the inner circumference to the outer circumference. The first wiring and the second wiring are formed in a spiral shape in the same winding direction when viewed from the first surface 10F. The first wiring and the second wiring function as one coil electrically connected in series.

2, 1002: Coil board 10: Flexible board 20U: U-phase coil 20V: V-phase coil 20W: W-phase coil 40U: U-phase terminal 40V: V-phase terminal 40W: W-phase terminal 50U: Inter-coil connection wire 50V: Between coils Connection line 50W: Inter-coil connection line 70U: Return line 70V: Return line 70W: Return line 550: Motor coil board 560: Yoke 570: Magnet 580: Rotating shaft 600: Motor R1: First region R2: Second region

Claims (4)

a flexible substrate having a first region on one longitudinal end side and a second region adjacent to the first region;
a coil formed on the flexible substrate and including a first phase coil, a second phase coil, and a third phase coil;
A coil board having a first phase terminal, a second phase terminal, and a third phase terminal for connection to the outside,
The first phase terminal is connected to the first phase coil and the third phase coil,
A second phase terminal is connected to the second phase coil and the first phase coil,
The third phase terminal is connected to the third phase coil and the second phase coil,
The first phase terminal, the second phase terminal, and the third phase terminal are arranged within the first region. a flexible substrate having a first region on one longitudinal end side and a second region adjacent to the first region;
a coil formed on the flexible substrate and including a first phase coil, a second phase coil, and a third phase coil;
A coil board having a first phase terminal, a second phase terminal, and a third phase terminal for connection to the outside,
The first phase terminal is connected to the first phase coil and the third phase coil,
The second phase terminal is connected to the second phase coil and the first phase coil,
The third phase terminal is connected to the third phase coil and the second phase coil,
The first phase terminal, the second phase terminal, and the third phase terminal are arranged in the second region. A motor coil substrate formed by winding the coil substrate according to claim 1 or 2 along the longitudinal direction. A motor formed by arranging the motor coil substrate according to claim 3 inside a cylindrical yoke, and arranging a rotating shaft and a magnet inside the motor coil substrate.

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